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University of Helsinki granted research funding for 17 promising researchers for years 2018-2020. Among them are two of our researchers: Liisa Kulmala studying the significance of Scots pine root system dynamics for intra- and inter-annual variation of whole-tree carbon balance and Risto Makkonen studying aerosols from green Sahara. Congratulations! Published 2.1.2018

Mona Kurppa received a recognition from the city of Helsinki of her master thesis on Assessing pollutant ventilation in city planning alternatives using a large-eddy simulation. Congratulations! Read the news here. Published 22.12.2017

The Academy of Finland and Russian Foundation for Basic Research have granted funding for five joint Finnish-Russian projects on Arctic research. Jaana Bäck (UH) and Sergej Zilintinkevich (FMI) received consortia project funding to study responses and adaptation of Arctic ecosystems to climate change, and Christina Biasi (UEF) to study nitrous oxide budget in Arctic region. Congratulations! Published 21.12.2017

In the Christmas Party of the Division of Atmospheric Sciences, three researchers were awarded for their work for common efforst: Victoria Sinclair in communications, Anton Rusanen in computer support and Merli Juustila in organizing the March for Science this spring. Congratulations! Published 19.12.2017

Aki Tsuruta defends her doctoral thesis "Application of the Ensemble Kalman filter in the estimation of global methane balance" on Thursday, 21 December 2017 at 12 o'clock in the Auditorium Brainstorm at the Finnish Meteorological Institute (Erik Palmenin aukio 1), Helsinki. The opponent is Dr. Shamil Maksyutov from National Institute for Environmental Studies. Published 13.12.2017

Pasi Aalto received a medal of the Order of the White Rose, knight 1st class (Valkoisen Ruusun 1. luokan ritarimerkki) on 6th December 2017 from the President Sauli Niinistö. Congratulations! Published 7.12.2017

Prof. Markku Kulmala received a recognition (Juupajoki-mitali) from Juupajoki Commune of his work at SMEAR II station in Hyytiälä, and Dr. Pauliina Schiestl-Aalto gave an independence day speech in Juupajoki. Read the speech in Finnish here. Published 7.12.2017

Ekaterina Ezhova received a young scientist prize from Siberian Aerosols Conference held in Tomsk. Congratulations! Published 5.12.2017

Ari Asmi has been nominated as European Open Data Champion. Congratulations! Read more here: Published 22.11.2017

Our Center of Excellence was in national news broadcast on Saturday 11th of November, see the video here (begins at 3:30): Also a wide article was published on YLE web pages: (in Finnish). Published 13.11.2017

Luís Barreira will defend his doctoral dissertation entitled "Solid-phase microextraction based sampling techniques for the analysis of volatile organic compounds in the atmosphere" on the 24th of November 2017, at 12:00. The public examination will take place at the Department of Chemistry, Auditorium A129, A.I. Virtasen aukio 1. Prof. Marianne Glasius, from Aarhus University, will serve as opponent. Published 3.11.2017

Pavel Alekseychik will defend his doctoral thesis “Multiscale studies of the peatland-atmosphere interactions in northern Eurasia" on Friday, 1 December 2017, in auditorium Brainstorm (Dynamicum, Erik Palménin aukio 1) at 12:00. The Opponent is Prof. Torben Christensen (Department of Physical Geography and Ecosystem Science, Lund University). Published 29.10.2017

In Siikaneva wetland in Hyytiälä, a workshop Suolaulu - Songs from Fenland (Wetland) performance in "Carbon Cycling in Boreal Peatlands and Climate Change II" took place 28th September 2017. Short clip of the performance can be seen from the link: Choreography: Annatuuli Saine, Dancers: Annatuuli Saine and Antti Seppänen in cooperation with students in VNF Theater department, Documentation: Mika Tertsunen, Music: Olli Kari, Suoruumis (Peat body), lyrics and song: Paleface Discussion between the mire and the artists: Kati Outinen. Published 25.10.2017

Nanna Myllys will defend her PhD thesis "From electronic structures to molecular-level cluster formation mechanisms in the atmosphere" in Chemicum auditorium A129 on Friday 1st of December at noon. The opponent will be Josep Anglada from the Institute of Advanced Chemistry of Catalonia. Published 20.10.2017

Nice writing and characterization of academician Markku Kulmala in the Finnish Physical Society web pages (in Finnish). Read the writing here: Published 14.10.2017

Simon Schallhart will defend his PhD thesis 'Observations of volatile organic compound concentrations and fluxes from different ecosystems' on Friday, November 17th, 2017 in auditorium E204, Physicum, Gustaf Hällströmin katu 2b, at 12:00. The opponent will be Professor Riikka Rinnan from the University of Copenhagen, and the custos Professor Tuukka Petäjä. Published 13.10.2017

Petri Keronen will defend his PhD thesis 'Flux and concentration measurements of carbon dioxide and ozone in a forested environment' on November 3rd 2017 at 12 noon in Chemicum, auditorium 2(A129), A.I. Virtasen aukio 1. The opponent will be Adjunct Professor Ari Leskinen from the University of Eastern Finland, and the custos Professor Timo Vesala. Published 13.10.2017

Academician Markku Kulmala received Wihuri International Prize 2017. The Wihuri International Prize is a prize awarded by the Wihuri Foundation every three years to people who have furthered the cultural or economic development in Finland. The International Prize has been awarded to mostly Finnish and foreign scientists. Read more from Wihuri web pages in Finnish or in English or watch a video made in Hyytiälä. See also YLE news, from Academy of Finland web pages or from Newspaper Forssan Lehti and Hämeen Sanomat. Published 10.10.2017

Robert Wagner will defend his PhD thesis 'On ion-induced new-particle formation: from well-defined laboratory experiments to atmospheric observations' on Tuesday, October 31st, 2017 in auditorium D101, Physicum, Gustaf Hällströmin katu 2b, at 12:00. The opponent will be Associate Professor George Biskos from the Cyprus Institute. Published 5.10.2017

A group of 190 scientists from EU and US has sent an open letter to EU decision-makers, warning that a planned increase in harvesting levels of forests for bioenergy use risk having a negative impact on the climate. Read more from Newspaper Helsingin Sanomat or from the open letter. Published 2.10.2017

Mai Allo was awarded with the State Award for Public Information (valtion tiedonjulkistamispalkinto) for her book about atmospheric scientists titled ‘Yhdessä Ilmakehässä'. Read more here. The book introduces atmospheric sciences, history of SMEAR stations and our Center of Excellence for the wider public. Congratulations Mai! Published 19.9.2017

Academy prof. Timo Vesala was interviewed about carbon sinks and the role of Finnish forests in climate change. Read more (in Finnish) from MTV news. Published 13.9.2017

Marja Bister was interviewed about Hurricane Irma and hurricanes in general on Radio programme Ylen Ykkösaamu. You can listen the programme here (it starts at about 35 minutes): Read also from Newspaper Aamulehti. Published 10.9.2017

Biogeochemist Mari Pihlatie has received an ERC starting grant from the European Research Council, congratulations! Her work focuses on measuring and modelling of methane emissions from trees. Read more from Published 8.9.2017

Mikael Ehn and Mikko Sipilä received a highly appreciated Smoluchowski award in annual European Aerosol Conference in Zürich 30th of August 2017. The award was given for their contributions to the role of molecular reactions and cluster formation for the growth of new atmospheric particles. Published 5.9.2017

We celebrated 50 years anniversary of Värriö research station 17th of August in Salla, Lapland. The research station was founded in 1967 to study animals, but 25 years later the main research focus changed to study the interaction between forests and the atmosphere as SMEAR I station was built. This year some expansion was built to the measurement hut at SMEAR I. Värriö research station is jointly under the departments of physics and forest sciences. See more from local YLE News (start at 2:30), from Newspaper Lapin Kansa or from YLE News online Published 23.8.2017

Laura Riuttanen will defend her PhD thesis “Air pollutants: regional transport, properties and effect on upper tropospheric humidity” on Friday September 15th in auditorium E204, Gustaf Hällströmin katu 2, at 12 o’clock. The opponent will be professor Annica Ekman from Stockholm University. Published 21.8.2017

Our Center of Excellence is involved in a multidisciplinary corporate cooperation project in China, which will take advantage of the coming 5G network to monitor air quality and the environment. The new project combines atmospheric sciences, computer science as well as geosciences and geography. The 5G network can support the monitoring of the environment much better than 4G, for example data transfer speed and energy efficiency are higher. Read more from: Published 18.8.2017

In collaboration with the city of Helsinki, Dr. Anu Riikonen is following city trees at four experimental streets in Helsinki. The idea is to learn how different species cope in our city environment and what kind of growing bed is needed belowground. Read more in YLE News here. Published 25.7.2017

Prof. Markku Kulmala is interviewed about climate change in Newspaper Suomenmaa. Read more here. Published 25.7.2017

We are building a SMEAR station to Beijing together with the Beijing University of Chemical Technology, BUCT. Collaboration contract was signed during the trip of the prime minister Juha Sipilä in China. Read more from MTV news, newspaper Turun Sanomat or newspaper Kaleva in Finnish or in English from web pages or Published 30.6.2017

Kari Lehtinen received a grant of merited scientist from the Finnish Association for aerosol research. Congratulations! Read more from newspaper Savon Sanomat. Published 30.6.2017

INAR is now seeking outstanding candidates for four positions of assistant/associate/full professor (see the descriptions below). The deadline for applications is 31st August 2017. Read more here Published 30.6.2017

The Academy of Finland has granted €15 million to the University of Helsinki in the third round of research profile funding. The grant is intended to fund 25 tenure track positions and their starter packages for three profile areas: Atmospheric and Earth system science (INAR), Data science and Sustainability science. Read more here: Published 13.6.2017

Prof. Kaarle Hämeri has been selected as the chancellor of the University, congratulations Kalle! Read more from the Newspaper Helsingin Sanomat. Published 2.6.2017

Conversation of the national usage of forests is ongoing. The National Climate Panel published a report where they summarize the joint ideas of most Finnish forest scientists. Read more from Newspaper Helsingin Sanomat, Yle news or Suomenmaa Published 28.5.2017

Päivi Haapanala will defend her PhD thesis, titled "On the solar radiative effects of atmospheric ice and dust" on Friday, 2nd of June at 12 o'clock in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a, 00560 Helsinki). The opponent is Senior Scientist Piet Stammes from the Royal Netherlands Meteorological Institute, Netherlands. Published 26.5.2017

Managing Europe’s forests under conflicting objectives calls for a holistic view and new tools” says a new report released by the European Academies’ Science Advisory Council. We need joint forest policy within EU says the leading writer of the report, prof. Jaana Bäck. Read more from a press release or New Nation in English, from Maaseudun Tulevaisuus or Kansan Uutiset in Finnish. published 20.5.2017

Academy of Finland has granted research funding for two research fellows, two post-doctoral researchers and one consortium, congratulations! Arnaud Praplan (research fellow) for studying reactivity of forest air and tree emissions, Harri Kokkola (research fellow) for studying the role of native and anthropogenic aerosols for climate effects, Ditte Taipale (post doc) for comprehensive atmosphere-ecosystem simulations to develop climate change scenarios, Anna Lintunen (post doc) for studying the role of bark permeability in tree performance and survival in changing climate, and Annalea Lohila (in consortium) for studying the contribution of upland forest soils in the regional methane balance from local to global scales. Published 16.5.2017

We can achieve the aims of the Paris agreement only if we simultaneously decrease carbon emissions and increase the carbon sinks in forests. Read more from an article written by academy prof. Timo Vesala and prof. Janne S. Kotiaho in newspaper Helsingin Sanomat. Published 15.5.2017

Carbon emissions have decreased in China, but to clean the air more research is needed on different air pollutions and their interactions. Markku Kulmala was interviewed on the topic in newspapers Iltalehti and Lapin Kansa. Puplished 8.5.2017

Mikko Sipilä is interviewed in Yle Areena radio program “Tiedeykkönen” on his research on aerosol formation, and explorations of the group to different corners of Globe. Listen the program here: published 5.5.2017

Academy professor Markku Kulmala received 2,5 M euro ERC Advanced Grant –funding. Read more here: published 14.4.2017

Finland and China have given a joint announcement of collaboration during the visit of the president of China in Finland in April. One goal in collaboration is joint efforts to mitigate climate change. Our Center of Excellence, led by Academy prof. Markku Kulmala who is the only Finnish member of the Chinese Academy of Science have ambitious plans to build a high-level measurement station in China to identify and understand the key air pollutants in Chinese megacities. Read more here: published 11.4.2017

Almost 70 Finnish Forest and Atmospheric scientists have signed a statement on the climate effects of increased use of forests for bioenergy. The researchers are concerned that increased use of forests for bioenergy will warm up the climate in the next few decades. Change from fossil fuels to bioenergy will have a positive effect on climate in a longer perspective, but the next few decades are crucial in terms of climate change. Use of wood in buildings and other long-term storages is recommended. Read more from a newspaper Maaseudun tulevaisuus and from Helsingin Sanomat. 27.3.2017

Academy professor Timo Vesala was interviewed in newspaper Helsingin sanomat on links between movies and climate change. Read more here. 17.3.2017

Atmospheric scientist Mikko Sipilä has received an ERC starting grant from the European Research Council. His work focuses to reveal in detail how aerosol particles are formed from atmospheric gases. Read more from a press release, from a newspaper Nurmijärven uutiset or a magazine Tekniikka ja Talous. Published 14.3.2017

Academy Professor Markku Kulmala has been awarded the honorary title of Academician of Science, the highest honour that can be bestowed on any individual scientist in Finland. President Sauli Niinistö granted the titles at a presidential session on 10th of March, and the letters of appointment were presented to the new Academicians at a ceremony held in Helsinki on 16th of March. The title can be held by no more than sixteen people at a time. Read more in Finnish from a release by the Finnish Government and from University of Helsinki web pages, and in English from the Academy of Sciences web pages. See also Markku’s review in a video made by the Academy of Finland here (in Finnish, subtitles in English). Published 10.3.2017, information added 20.3.2017

Pauliina Schiestl-Aalto will defend her doctoral thesis on Wednesday 19th of April in Hyytiälä Forestry Field Station at 12 o´clock. The title is “Modelling intra- and inter-annual growth dynamics of Scots pine in the whole-tree carbon framework”. The opponent is assistant professor Nicolas Delpierre from Université Paris Sud, France. Published 10.3.2017

Newspaper Maaseudun Tulevaisuus wrote an article about SMEAR II research station with focus on warming climate. Dr. Juho Aalto was interviewed. Read the article here. Published 8.3.2017

Lauri Lindfors will defend his doctoral thesis on Friday 21th of April in Viikki, auditorium 186 in D-building (Latokartanonkaari 11) at 12 o’clock. The title is “Low apoplastic water potential in trees - Dehydration stress on living cells and embolism in xylem”. The opponent will be ProfessorGaby Katul from Duke University, USA. Published 8.3.2017

An article that was recently published in the Bulletin of the American Meteorological Society, was the latest of five papers to come out of the Biogenic Aerosols – Effects on Clouds and Climate (BAECC) campaign. Atmospheric Radiation Measurement (ARM) Climate Research Facility by U.S. Department of Energy had four radars in a remote tract of boreal forest in Finland to help unravel the effect of biogenic aerosols on cloud formation in 2014 to support the BAECC campaign. The radars were part of the second ARM Mobile Facility (AMF2), a 50-instrument portable atmospheric and climate observation unit. It was deployed by the ARM Facility to Finland in support of a field campaign. BAECC gathered atmospheric data within tall thickets of Scots pine from February to September of 2014. BAECC was the work of a five-nation team of scientists under the lead of prof. Tuukka Petäjä. Read more here: 20.2.2017

We have received new Academy funding for research infrastructure via INAR Ecosystems. INAR Ecosystems is led by prof. Jaana Bäck and has as collaborative partners Natural Researches Institute Finland, Finnish Environment Institute, Universities of Eastern Finland, Oulu, Turku and Jyväskylä. This funding will strengthen national collaboration in ecosystem research. 3.2.2017

Antti-Jussi Kieloaho will defend his PhD thesis “Alkyl amines in boreal forest and urban area" on Friday February 3rd in auditorium B123 (Exactum, Gustaf Hällströmin katu 2b) at 12 o’clock. The opponent will be Associate Professor Lise Lotte Sørensen from The Arctic Research Centre of Aarhus University, Denmark. 25.1.2017

Prof. Hannele Korhonen was among three recipients of a 5 Million US dollar grant for her work on the role of atmospheric aerosols, congratulations! The UAE Research Program for Rain Enhancement Science hosted its first ever International Research Progress Workshop on Rain Enhancement on 18 and 19 January at Abu Dhabi National Exhibition Centre (ADNEC). Research Groups from Finland, USA and UK were announced as recipients of UAE Rain Enhancement Program’s 5 Million US dollar Grant. Read more from Newspaper Helsingin Sanomat: 24.1.2017

Although clouds typically have a cooling effect on climate, arctic clouds that contain water warm up the arctic climate. Academy of Finland has published an article about prof. Hanna Vehkamäki’s work with ice nucleation and Arctic clouds. Read more (in Finnish) from the Academy of Finland web pages, or from newspapers Savon Sanomat and Iltalehti 13.1.2017

Nice article in newspaper Helsingin Sanomat about Finnish research on air quality and pollutions in China. Markku Kulmala and Joni Kujansuu were interviewed. Read the article here (in Finnish): 12.1.2017

Jussi Malila defends his PhD Generalisations and Misapplications of Nucleations of Theorems on 8th December at 12:00 in SN201, Snellmania, Kuopio. The opponent is prof. David Reguera from the University of Barcelona, Spain. Published 7.12.2016

Article about Karsa Ltd in newspapers Turun Sanomat, Aamulehti and Kainuun Sanomat. Mikko Sipilä and Jyri Mikkilä were interviewed. Read the news from Turun Sanomat here and Kainuun Sanomat here. Published 30.11.2016

Riikka Väänänen will defend her PhD thesis “Aerosol number size distribution in the boreal environment: spatio-temporal variation” on Friday December 9th in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a) at 12 o’clock. The opponent is Dr. Birgit Wehner from Leibniz Institute for Tropospheric Research, Germany. Published 28.11.2016

Mikko Sipilä was interviewed in the MTV3 programme Huomenta Suomi about their new technology to detect explosive materials at the airports. See the programme here. Published 21.11.2016

Federico Bianchi received the Swiss Aerosol Group Award for the best scientific publication in the field of international aerosol research written within Switzerland, and the Arne Richter Award for outstanding early career scientists from the European Geosciences Union, congratulations! Published 21.11.2016

Prof. Markku Kulmala is The World Academy of Sciences fellow. The election of 40 new TWAS Fellows took place at the Academy's 27th General Meeting in Kigali, Rwanda. Published 18.11.2016

University of Helsinki has submitted an application to the Academy of Finland, to "Competitive funding to strengthen university research profiles" call (PROFI3). The funding available is 50 million euros and the purpose is to support and speed up the strategic profiling of Finnish universities in order to improve the quality of research. University of Helsinki applies for 18 million euros to three profiling areas: Atmospheric and Earth system science, implemented with the Institute for Atmospheric and Earth System Research (INAR), Data science, implemented with Helsinki Centre for Data Science (HiDATA) and Sustainability science, implemented with Helsinki Sustainability Science Centre (HSSC). Read more from Flamma: Published 18.11.2016

The Faculty of Science has awarded 3.2M € funding over a 4-year period to the collaboration project ATMATH (Atmospheric Mathematics). The collaboration involves mathematicians and atmospheric scientists. The project principal investigators are prof. Hanna Vehkamäki, Academy prof. Timo Vesala, Academy prof. Antti Kupiainen and Academy prof. Matti Lassas. The aim of the ATMATH project is to develop mathematical methods used in atmospheric science and apply them to concrete problems of atmospheric research. Published 11.11.2016

Jenni Kontkanen will defend her PhD thesis "On the formation and growth of sub-3 nm atmospheric particles and molecular clusters" on Friday November 25th in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a) at 12 o'clock. The opponent will be Assoc. Prof. Jeffrey Pierce from Colorado State University. Published 10.11.2016

Outi Meinander will defend her PhD thesis "Effects of black carbon and Icelandic dust on snow albedo, melt and density" in the Auditorium Brainstorm at the Finnish Meteorological Institute, Helsinki, on 18 November 2016, at 12 o'clock. The opponent is Prof. Tiit Nilson, honorary doctor of the University of Helsinki, from Tartu Observatory, Estonia. Published 8.11.2016

Juan Hong will defend her thesis on "Probing the chemical composition of atmospheric aerosols by observation of their physico-chemical properties" in Physicum E204 on Thursday 24.11. at 12:00. The opponent is Prof. Erik Swietlicki from Lund university. Published 7.11.2017

Prof. Markku Kulmala was appointed as professor of honour for his achievements in atmospherioc sciences in the Tjumen State University in Russia. Published 7.11.2016

Mai Allo was interviewed in radio YLE1 in programme called “Leikola and Lähde” about her newly published book 'Yhdessä ilmakehässä'. Mai Allo and Markku Kulmala were also interviewed at Helsingin kirjamessut today. You can listen the radio programme (in Finnish) here: 28.10.2016

Anu Riikonen will defend her PhD thesis “Some ecosystem service aspects of young street tree plantings” 18.11.2016 at 12:00 in Auditorium 2041, Biocentre 2, Viikinkaari 5. The opponent is Dr. Arne Sæbø, Norwegian Institute of Bioeconomy Research, Norway. 28.10.2016

Asst. Prof. Mikko Sipilä was interviewed in Helsingin Sanomat newspaper in an article about the inventions made in the Universities and their ownership. Read more in Finnish here: published 26.10.2016

We had the annual Center of Excellence seminar in Hyytiälä 12.-14.10.2016 in beautiful autumn weather (see the group photo here). Thank you for all that participated the seminar, and for those who submitted scientific abstracts. The abstracts are found online in the Report series in aerosol science: published 18.10.2016

A book ‘Yhdessä Ilmakehässä' by Mai Allo introduces atmospheric science for the wider audience, tells about the history of SMEAR stations and our Center of Excellence, and characterizes some key researchers in a lively manner. The book was published (in Finnish) by the Finnish Literature Society. More information can be found from a book review in Helsingin Sanomat or Tiede magazine. Information on the subject in English is found from H2020 Special reports. 9.10.2016

Two of our researchers got new key project funding (“kärkihanke”) from the Academy of Finland: Dmitri Moisseev on weather radar network in Helsinki, and Albert Porcar-Castell on effective methods to evaluate viability and productivity of vegetation in larger scale. Congratulations! Published 30.9.2016

Jani Hakala will defend his PhD thesis titled "Measuring hygroscopic properties of aerosol particles" on Friday, September 30th 2016, in Chemicum A110, A. I. Virtasen aukio 1, Helsinki, at 12 o'clock. The opponent is Docent Birgitta Svenningsson from Lund university. The custos is Prof. Tuukka Petäjä. Published 26.9.2016

Yao Gao will defense his PhD thesis titled "Interactions between land surface, forests and climate: regional modelling studies in the boreal zone" on Tuesday, October 4th 2016, in Auditorium Brainstorm at the Finnish Meteorological Institute, Helsinki, at 12 o'clock. The opponent is Dr. Eleanor Burke from UK Met Office Hadley Center. The custos is Prof. Timo Vesala. Published 23.9.2016

Tommy Chan will defense his PhD thesis titled 'Dynamic variations in bark hydraulics – understanding whole tree processes and its linkage to bark hydraulic function and structure' in Auditorium 1, Infokeskus Korona, at 12 o'clock on Friday Nov 4th. The opponent is Prof. Roderick Dewar from The Australian National University, Canberra. Published 15.9.2016

The American Chemical Society award 2017 for Creative Advances in Environmental Science and Technology to prof. Douglas R. Worsnop, congratulations! Read more here. Published 14.9.2016

Sitra and teachers, experts and students from higher education institutions created an open course on the basics of climate change - The course meets a clear need to educate a new generation of climate experts for all fields, one that understands the fundamentals of climate change and can apply this knowledge within their respective fields. Researcher Laura Riuttanen from CoE ATM was responsible for coordinating the creation of the course. Visit Published 13.9.2016

Dr. Nonne Prisle received an ERC starting grant, congratulations! Published 9.9.2016

Prof. Kaarle Hämeri received International Aerosol Fellow Award 2016, congratulations! Read more in Finnish here. published 8.9.2016

Article was published in Aamulehti about our research at SMEAR II, and the export of our knowledge and infrastructure to China and Russia. Read more here. published 8.9.2016

Five of our researchers have been selected as Thomson Reuters Highly Cited Researchers 2016: Markku Kulmala, Douglas Worsnop, Veli-Matti Kerminen, Tuukka Petäjä and Ari Laaksonen. Congratulations! The list includes a total of 16 researchers from Finland from all disciplines. See here: 8.9.2016

A cartoon book ‘Ozone diary’ (Otsonipäiväkirjat) by Dr. Tero Mielonen and cartoonist Pentti Otsamo combines atmospheric sciences and art! The main character is an atmospheric scientist Paavo who goes abroad after his doctoral defense to study ozone with satellite measurements. The book is published (in Finnish) by Ursa. More information can be found from Tero has been interviewed in YLE radio two times:, 8.9.2016

A paper was published in Nature by Mikko Sipilä et al. The paper describes how particles form from coastal macro-algae iodine emissions; it was showed for the first time how particles form in molecular scale in the atmosphere. Read more from the article or in Finnish from magazine Tekniikka ja Talous. Published 5.9.2016

Our forests will be mixed forests in future as the broadleaved species will most likely conquer growth area from the evergreen coniferous species says prof. Jaana Bäck. Read more in Finnish from the newspapers Savon Sanomat and Etelä- Suomen Sanomat from categories national news and science news. Published 13.8.2016.

Prof. Hanna Vehkamäki together with prof. Ilpo Vattulainen wrote in newspaper Helsingin Sanomat about the need to keep super computer capacity and computational environment updated in Finland. Finland has many top-level research groups using computational science. Read more in Finnish here. Published 11.7.2016

Prof. Markku Kulmala was appointed as Academy professor, congratulations! Published 23.6.2016

PEEX-HQ together with IEAS-Europe organized the 1st Sofia Earth Forum in Helsinki, Finland, on 20-22nd June 2016. The Forum aims at joint understanding over different boundaries and at finding practical solutions on the Grand Challenges. Published 23.6.2016

Hannele Hakola ja Heidi Hellén wrote News and Views article to Nature Geoscience about “Atmospheric chemistry: The return of ethane”. Measurements show that long-declining atmospheric ethane concentrations started rising in 2010 in the Northern Hemisphere, and ethane emissions can lead to ozone pollution. Read more here: Published 14.6.2016

Pekka Rantala will defend his PhD thesis "Ecosystem scale measurements of surface–atmosphere volatile organic compound exchange" on Wednesday June 22nd in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a) at 12 o'clock. The opponent is Prof. Alex Guenther from Department of Earth System Science, University of California, Irvine, US. Published 1.6.2016

For the first time, five of our researchers are among the 100 most cited researchers in the field of geosciences, and 13 among the 1000 most cited in the same field (ISI Web of Science)! Published 27.5.2016

Prof. Jaana Bäck is interviewed in Newspaper Landsbygdens Folk about the forests being (or not) carbon neutral. Read more (in Swedish) here: Published 27.5.2016

Today three papers are published in Nature and Science where our CoE is involved! These cloud studies suggest that Earth’s climate may not warm as quickly as expected. Read more from Nature News, Science News, Chemical and Engineering News, the MSN, New York South East Post, Express, New Press. The articles are listed below:
Kirkby, al. (2016) Ion-induced nucleation of pure biogenic particles. Nature 533: 521–526östl, J. et al. (2016) The role of low-volatility organic compounds in initial particle growth in the atmosphere.
Nature 533: 527–531, F. et al. (2016). New particle formation in the free troposphere: A question of chemistry and timing. Science 352: 1109–1112  Published 26.5.2016

Kajar Köster has revceived Adacemy of Finland researcher grant, congratulations! Published 25.5.2016

Hyytiälä Forest field station hosts annually twenty scientific conferences and hundreds of visits by international researchers and other environmental experts. YLE TV programme “Luonto lähellä” interviewed Station director Antti Uotila. See the programme (in Finnish) here: Published 23.5.2016

Markku Kulmala was awarded with Cosmonautics Federation of Russia gold medal in the PEEX conference in Beijing. Nina Sarnela was awarded with a PEEX Poster award. Congratulations! Published 20.5.2016

Katrianne Lehtipalo et al. published paper in Nature communications about the effect of acid–base clustering and ions on the growth of atmospheric nano-particles. Read the article here: Published 20.5.2016

The Second Pan-Eurasian Experiment (PEEX) Science Conference, which opened on Wednesday, has gathered in Beijing more than 160 experts and scholars from 12 countries including Finland, Russia, Norway and China. The PEEX is a multidisciplinary research program aimed at resolving major uncertainties in Earth system sciences and global sustainability related to Arctic and boreal Pan-Eurasian regions as well as China. The conference is organized by the University of Helsinki, the CAS Institute of Remote Sensing and Digital Earth and the Russian Institute for Scientific Research of Aerospace Monitoring. Read more here: and here Published 19.5.2016

Mikko Sipilä has revceived Adacemy of Finland researcher grant, and Taina Yli-Juuti and Matti Rissanen Post Doctoral grants, congratulations! Published 9.5.2016

Markku Kulmala was interviewed in MTV news about his carrier, and how he got here – do you already know what is the role of Chernobyl nuclear accident for his carrier? Read the news here. Published 4.5.2016

Tuija Jokinen received 27th April University's PhD-award given to exceptionally high quality PhD work. Congratulations Tuija! Read more here: Published 28.4.2016

Executive Director Jouni Keronen from the Climate Leadership Council and Prof. Markku Kulmala wrote together a front page article in Helsingin Sanomat 25th April about the market potential that Finland has in Energy Efficiency, Clean Technology, and Bio Economy. Read here: Published 25.4.2016

Oona Kupiainen-Määtä will defend her PhD thesis "From cluster properties to concentrations and from concentrations to cluster properties" in Physicum auditorium E204 (Gustaf Hällströmin katu 2a) on Friday 27th May at 10 am. The opponent is Professor Ian Ford from University College London and the custos is prof Hanna Vehkamäki. Published 15.4.2016

Narcisse Tsona will defend his PhD thesis ”First principles studies of ionic oxidation of sulfur dioxide and molecular clustering
” " in Physicum auditorium E204 (Gustaf Hällströmin katu 2a) on Friday 3rd June at 12 o’clock noon. The opponent is Professor Joel Thornton from University of Washington, Seattle and the custos is prof Hanna Vehkamäki. Published 15.4.2016

Antti Lauri received the Nordic Society for Aerosol Research (NOSA) Aerosologist award, congratulations! Read more here Published 7.4.2016

Anton Laakso defends his PhD thesis titled 'Modelling radiative and climate effects of aerosols: from Anthropogenic emissions to geoengineering' in auditorium SN201, Snellmania, Kuopio campus, on 9th of April, 2016, at 12 o'clock noon. The opponent is Associate Prof. Ilona Riipinen, Stockholm University. Published 4.4.2016

ACTRIS is now on the European research infrastructure (ESFRI) road map, and will have its head office in Helsinki 2021 forwards. ACTRIS studies aerosols, clouds and trace gases, and is led together with the University of Helsinki and Finnish Meteorological Institute at Kumpula campus. Together ACTRIS and ICOS (European infrastructure for greenhouse gases) cover atmospheric research on climate change, and brings a strong lead of European atmospheric climate change study to Finland. Read more from YLE, HS Published 22.3.2016

A campaign “Perfect equation” has been launched where ten female scientists working in Finnish universities or research institutes share their inspirational stories, prof. Hanna Vehkamäki among them. Computational science plays a key role when looking for answers to the great challenges of humankind. Regardless of the opportunities involved in using computational methods there is a gender division amongst the researchers using computational science methods. Perfect equation campaign is aiming to highlight female researchers working with computational methods in Finland. The stories open a window to researchers' everyday life and give an introduction to their fascinating research topics. Read more here: . Published 18.3.2016

Prof. Hanna Vehkamäki has been granted European Research Council (ERC-2015-AdG) grant for five years to simulate Non-Equilibrium Dynamics of Atmospheric Multicomponent Clusters (DAMOCLES). Congratulations! The purpose of DAMOCLES is to use computational and theoretical methods to achieve a comprehensive understanding of atmospheric nanocluster and ice crystal formation based on fundamental physico-chemical principles. A key component is to build an accurate model for the fate of clusters inside mass spectrometers, which will allow us to extract more information from mass spectrometric measurements. Published 18.3.2016

Ari Asmi was interviewed about the upcoming European Open Science Cloud initiative in the Research Professional magazine article "Wish list emerges for research cloud" 18 Feb. Read article from here. Published 18.3.2016

Ville Kasurinen defends his PhD thesis titled 'Linking water and carbon cycles: modeling latent heat exchange and dissolved organic carbon' on 8th of April, 2016, at 12 o'clock noon in auditorium 2, Latokartanonkaari 7. The opponent is Prof. Peter A. Raymond, Ph.D., Yale School of Forestry & Environmental Studies. Published 16.3.2016

Three school students from Etelä-Tapiola high school (IB-programme) have successfully made a test launch of a weather balloon with cameras and GPS tracking system in Helsinki in March in collaboration with the Division of Atmospheric Sciences. This outreach activity introduces the students to the technology relevant for atmospheric soundings as well as teaches the scientific project management and methods. The next launch is scheduled for the New Year's eve 2016. Published 9.3.2016

Snow cover in the Southern Finland will reduce to half before year 2050. Read more how our future winters will look like from the interview of University lecturer Jouni Räisänen in Helsingin Sanomat: published 22.2.2016

Doctor et professor honoris causa from the Tver State University in Russia has been awarded to Professor Markku Kulmala, Department of Physics, for his work in atmospheric sciences, meteorology and climatology, and particularly his activities related to Pan Eurasian Experiment (PEEX) in February 2016. Read more from University web pages. published 19.2.2016

Among the 10 most influential persons in Finnish scientific community listed by Kauppalehti, you can find Academy prof. Markku Kulmala. See the news here: published 21.1.2016

Olli Peltola will defend his PhD thesis "Towards more consistent estimates of methane fluxes by the eddy covariance technique" on Friday February 26th in auditorium D101 (Physicum, Gustaf Hällströmin katu 2a) at 12 o'clock. The opponent is Prof. Ankur R. Desai from the Department of Atmospheric and Oceanic Sciences, University of Wisconsin - Madison, Madison, USA. Published 19.1.2016

Five of our researchers have been selected as Thomson Reuters Highly Cited Researchers 2015: Markku Kulmala, Douglas Worsnop, Veli-Matti Kerminen, Tuukka Petäjä and Ari Laaksonen. See here: Published 5.1.2016

Nice article about Integrated Carbon Observation System (ICOS), Academy prof. Timo Vesala and Director General Werner Kutsch on University of Helsinki web pages (in Finnish): Published 4.1.2016

Tero Mielonen was interviewed in Helsingin Sanomat and YLE web pages about the health effects of coal power. Mielonen and colleagues published an article in Journal of Geophysical Research, where they estimated what would be the climate, air quality and human health consequences if all nuclear reactors worldwide were closed down and replaced by coal combustion. Read more from HS, YLE , from the article or Earth and Space Science News Published 4.1.2016

Current El Niño is one of the strongest through history. Prof. Ari Laaksonen interviewed in Helsingin Sanomat ( and in Ilta-Sanomat ( Published 4.1.2016

Academy prof. Markku Kulmala has been nominated as foreign member of the Chinese Academy of Science for his research on atmosphere and air quality. Cooperation with Chinese to analyze and predict the air quality has been active since 2008. The Academy has 70 foreign members, and Kulmala is the first Finnish member. Read more in Helsingin Sanomat: In english: Published 15.12.2015

Professor Veli-Matti Kerminen was interviewed in Ilta-Sanomat about the rise of the sea level due to global climate warming. Read the article in Finnish here: Published 14.12.2015

Jukka Pumpanen was appointed as Professor of Microbiological Biogeochemistry in the University of Eastern Finland in Kuopio 1st October. Congratulations! Published 11.12.2015

Academy professor Timo Vesala, a member of The National Climate Change panel, was interviewed in Helsingin Sanomat today about forest usage and climate change. The Panel suggests that we would gain more positive climate effect by increasing the size of the carbon sink in the forests instead of cutting more forests to bio energy. Read the article in Finnish here: Published 10.12.2015

Prof. Annikki Mäkelä-Carter receives a medal of the Order of the White Rose, knight 1st class (Valkoisen Ruusun 1. luokan ritarimerkki) on 6th December 2015 from the President Sauli Niinistö. Congratulations! Published 3.12.2015

Kaarle Hämeri, Chair of the Finnish Union of University Professors, was a guest in TV programme A-studio with the Minister of Education and Culture Sanni Grahn-Laasonen on 30th November. They discussed about the effects of the huge cuts from the University funding, and about the efficiency of science. Watch the programme here: Published 1.12.2015

We are organizing two COP 21 Side Events in Paris Climate Conference.
Why are Northern boreal forests as important as rain forests? and How can Rudolf help the climate - and not only Santa? The side event will discuss results of Nordic top level research showing that the Boreal ecosystem bind carbon, in the ground and in the trees. In addition, the trees emit hydrocarbons that will lead to particle formation. This is part of the important feedbacks, leading to the Boreal forests at Northern high latitudes being equally important as the rain forests in a climate perspective. The reindeer maintain the albedo by eating and trampling vegetation. More vegetation will make the Tundra darker, as brush and trees protrude out of the snow, and thus reducing the albedo.
The side event is organized by Nordforsk and the Nordic Centers of Excellence CRAICC, DEFROSDT and TUNDRA, and it is held in the Nordic Pavilion on 30th November at 14:15
Trust but verify - towards a comprehensive Global Observation, Information and Verification System. The side event will discuss the strong need for a comprehensive, integrated and well-organized scientific observation system on carbon and greenhouse gases as well as air quality in order to support mitigation and adaptation. The side event is organized by University of Helsinki, ICOS ERIC, Lund University and University of Bergen, and is held in the Nordic Pavilion on 1st December at 12:15 published 27.11.2015

Alessandro Franchin defends his PhD thesis "Extending fundamental knowledge on aerosol formation by measuring sub-3 nm ions and particles" on Friday 4th December at 12:00 in Chemicumin auditorium A110. The opponent is associate professor George Biskos (Technische Universiteit Delft, Netherlands). published 26.11.2015

The European Commission has officially established the Integrated Carbon Observation System (ICOS ERIC), a new pan-European environmental research infrastructure which aims to provide long-term carbon and greenhouse gas observations across the Europe. Finland is the ICOS ERIC hosting country; Finland has led the preparatory phase since 2013 with the led of Academy prof. Timo Vesala. The ICOS has successfully completed almost a decade long process from entering the European Commission ESFRI Roadmap to establishment of the ICOS ERIC. The ICOS ERIC inauguration will be held in Brussels on Tuesday 24th November when Robert-Jan Smits will hand out the official plate to the Finnish Minister of Education and Culture Sanni Grahn-Laasonen and ICOS Director General Werner Kutsch in the presence of the hosting country delegation. Read YLE News here. Published 23.11.2015

Tommi Bergman defends his PhD thesis “Development and Validation of Climate Models: Towards a More Detailed Aerosol Description“ in Tietoteknia building (Savilahdentie 6, Kuopio) of the University of Eastern Finland in the auditorium TTA on Friday December 4th at 12:00 o’clock noon. The opponent is Dr. Claudia Timmreck from Max Planck Institute for Meteorology. published 17.11.2015

High-level study material on climate change is soon available for anyone interested in a form that students from all disciplines can follow! University of Helsinki, Lappeenranta University of Technology and Sitra are building together a multidisciplinary basic course on climate change with the aim that all master students would be familiar the basics of climate change. Read more here: published 17.1. 2015

Juho Aalto defends his PhD thesis "Seasonal and spatial variation of VOC emissions from boreal Scots pine forest" on Thursday Dec 10th in the auditorium of Hyytiälä Forestry Field Station at 12 o'clock. The opponent is Dr Carlo Calfapietra from National Research Council/Institute of Agro-Environmental & Forest Biology, Italy. Published 16.11.2015

Alessandro Franchin is defending his PhD thesis "Extending fundamental knowledge on aerosol formation by measuring sub–3 nm ions and particles" on Friday December 4th at the auditorium A110 (Chemicum, A. I. Virtasen aukio 1) at 12 o'clock. The opponent is Prof. George Biskos, faculty member at the Cyprus Institute (Cyprus) and at Delft University of Technology (The Netherlands). Published 12.11.2015

Prof. Hanna Vehkamäki was interviewed 28.10. at Academy of Finland web pages on modelling cloud formation especially in the Arctic region: Published 3.11.2015

Research coordinator Ari Asmi was interviewed at the University of Helsinki web pages on European research infrastructures and ENVRI PLUS project: Published 3.11.2015

Ympäristöalan eurooppalaiset tutkimusinfrastruktuurit pitää saada pelaamaan samaan maaliin, olipa kyse revontulista, kasvihuonekaasuista tai mannerlaatoista. Tätä ajaa Kumpulassa päämajaansa pitävä ENVRI PLUS-hanke. Published 28.10.2015

Markku Kulmala was interviewed in Helsingin Sanomat 28th October on Air quality in China. Read the HS article here: Published 28.10.2015

Kimmo Neitola defends his PhD thesis "Experimental studies on nucleation and new particle formation" 30th October at 12:00 in Brainstorm auditorium, Dynamicum (Erik Palmenin aukio 1). The opponent is prof. Jim Smith from the University of California, Irvine. Published 27.10.2015

Annele Virtanen was appointed as Professor of Environmental Physics in the University of Eastern Finland in Kuopio 1st October. Congratulations! Published 26.10.2015

M. Kulmala published a comment paper in Nature about the Atmoshperic chemistry in China. Cleaning up city and indoor air will require a deeper understanding of the unprecedented chemical reactions between pollutants. Read the article here: 21.10.2015

Open Data cooperation between Finnish Meteorological Institute and municipalities. In the Open Data service by the FMI extensive, real time air quality data is freely available in digital form from about 100 measurement stations around Finland. Read more in Finnish The Open Data service available at 8.10.2015

The annual Center of Excellence Seminar is held in Kuopio 22.-24. September. See the seminar programme in pdf here. 21.9.2015

Luxi Zhou will defend her PhD thesis "Modelling aerosol formation and precursor gases in the boundary layer" on Tuesday, September 29th, in auditorium CK112 (Exactum, Gustaf Hällströmin katu 2b) at 12 o'clock. The opponent is Prof. Laurens Ganzeveld from Wageningen University, Netherland. 14.9.2015

Dr. Katrianne Lehtipalo was interviewed in a Newspaper Keskisuomalainen about aerosols and their effect on climate and human health. Please read more here: 8.9.2015

Tuija Jokinen will defend her PhD thesis "Formation of low-volatility aerosol precursor molecules and clusters in the atmosphere" on Wednesday September 16th at 10 o'clock in Exactum auditorium CK112. The opponent is research director Karine Sellegri from the Université Blaise Pascal. 3.9.2015

Juha Kangasluoma will defend his PhD thesis "Generation, characterization and sizing of sub-3 nm nanoparticles and molecular clusters" on Wednesday September 16th at 14 o'clock in Physicumin auditorium D101. The opponent is prof. Lin Wang from The University of Fudan, China. 3.9.2015

The University of Helsinki principal Jukka Kola suggested in his opening talk for the academic year a global network of SMEAR (Station for Measuring Ecosystem-Atmosphere Relations) stations to be built to monitor and better understand changing climate. Read more in Helsingin Sanomat: 1.9.2015

The Fedor P. Litke Gold Medal of the Russian Geographical Society is awarded to Prof. M. Kulmala for his works in meteorology and climatology on: formation of atmospheric aerosol, nucleation and clouds, atmosphere-Earth interaction, climate change, air pollution, Arctic boreal environment, and global challenges. The award has been highly acknowledged in Russian media, visit e.g. 20.8.2015

Sustainable Earth System Manifesto by Grand Challenges & Northern Societies Initiative is published in co-operation between our Center of Excellence and The Finnish Centre of Excellence in Russian Studies – Choices of Russian Modernisation. Earth’s system is facing several environmental challenges on a global scale, such as climate change, declining air quality, ocean acidification, loss of biodiversity and shortages of fresh water and food supplies. Grand Challenges are the main factors controlling human well-being and the security and stability of future societies. Since the Grand Challenges are highly connected and interlinked, they cannot be solved separately. Therefore, a framework is needed in which a multidisciplinary scientific approach has the required critical mass and is strongly connected to fast-tracked policy making. Members of the Initiative are issuing a Sustainable Earth System Manifesto which addresses three strategic tasks: (i) Constructing a novel infrastructure to monitor and to make reliable predictions about the behaviour of critical environment parameters worldwide. (ii) Finding a political consensus to overcome various geopolitical interests, so that the necessary research, mitigation and adaptation actions can occur without delay, ensuring sustainable living conditions in different parts of the world. (iii)nProviding the operating prerequisites for technology development and particularly energy and material flows to moderate on-going climate change and finding practical solutions for the Grand Challenges. Read the manifesto here. News about the manifesto can also be read from several News Papers: HBL, Salon Seudun Sanomat, Kainuun Sanomat, and Kaleva. 18.8.2015

Prof. Hanna Vehkamäki was interviewed in Etelä-Suomen Sanomat about being a woman professor. Read a scan of the article (in Finnish) here. 17.8.2015

We celebrated today the 20 years anniversary of SMEAR II station in Hyytiälä. SMEAR II is the flagship of the network of SMEAR (Station for Measuring Ecosystem-Atmosphere Relations) stations with comprehensive and continuous measurements of the atmosphere together with forest, lake and mire ecosystems. There are several operation units to reach into and above the stand canopy at SMEAR II: a 128 m high tower for atmospheric and flux measurements, one 18 m tower for irradiation and flux measurements, another for tree physiology measurements and 35 m walk-up tower for aerosol measurements. Please read more in Finnish here. 13.8.2015

Dr. Tareq Hussein received "Abdul Hameed Shooman Award for Arab Researchers" for his research work in the field of atmospheric aerosols and its relation to the emissions and impacts on atmospheric global warming. You can read more about the award here. Dr. Hussein works as Associate Professor at the University of Jordan and as docent at the university of Helsinki. Congratulations! 12.8.2015

Academy prof. Markku Kulmala was interviewed in Huomenta Suomi together with bishop Tapio Luoma on climate change. For two years 17 natural scientists and theologies have been meeting in fruitful discussions. Read the news here (in Finnish). 11.8.2015

Maija Kajos will defend her PhD thesis "Emissions, concentrations and effects of BVOCs in the boreal atmosphere" on Friday August 7th in auditorium A111, Exactum building (Exactum building, Gustaf Hällströmin katu 2b) at 12 o'clock. The opponent is Senior Scientist Rainer Steinbrecher from World Calibration Center (WCC), Garmisch-Partenkirchen. 23.7.2015

Johanna Patokoski defends her PhD thesis "Influence of source types and source areas on the concentrations of volatile organic compounds in Southern Finland" on Friday June 26th in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a) at 12 o'clock. The opponent is Dr Steffen M. Noe from Department of Plant Physiology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences. 8.6.2015

Limnology Jouni Heiskanen was interviewed in a popular article about lakes and climate change in a daily paper Aamulehti. Heiskanen defends his thesis 5th of June in Viikki. 1.6.2015

A nice article about prof. Kulmala and Climate change and air quality in magazine 'Ulkopolitiikka'. Please read the article here: 1.6.2015

A first global scale study has estimated how forest emitted compounds affecting cloud seeds via formation of low-volatility vapors. According to the latest projections, terrestrial vegetation emits several million tons of extremely low-volatility organic compounds per year to the atmosphere. These oxidation products of compounds such as monoterpenes results in an increase of condensing vapors that can further form cloud condensation nuclei over the continents and thus has an influence on the cloud formation. The paper is published in PNAS by Tuija Jokinen et al. Read more here, read the article here. 27.5.2015

Latest results on the climate effects of forests with different cutting intensities have been presented by the University of Helsinki, Natural Resources Institute Finland and Finnish Meteorological Institute. The climate effect was analyzed based on modelling changes in carbon stock, forest albedo and aerosol effects. The main result was that less forest cuts and favoring broadleaved species will reduce the warming of climate. Read more from YLE and Metsälehti, where Tuomo Kalliokoski is interviewed. 27.5.2015

Jouni Heiskanen defends his PhD thesis ”Lake-atmosphere greenhouse gas exchange in relation to atmospheric forcing and lake biogeochemistry” 5th of June at 12 o’clock in Viikki campus, Viikinkaari 11 (Infokeskus), auditorium 2. The opponent is prof. Andreas Lorke from the University of Koblenz-Landau, Germany. 25.5.2015

Prof. Hanna Vehkamäki received today the University of Helsinki Maikki Friberg-award, congratulations! The award is given yearly for a person, group or association that has promoted equality at the University. Hanna has acted as chair of our Equality group at the Department of Atmospheric Sciences since it was established, and as chair in Association for Women Researchers in Helsinki (Helsingin Tutkijanaiset ry) since 2014. Read more (in Finnish) here: 20.5.2015

Mikhail Paramonov will defend his PhD thesis "Life cycle of a cloud condensation nucleus, CCN" on Friday June 5th in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a) at 12 o'clock. The opponent is Prof. Imre Salma from the Institute of Chemistry, Eötvös University, Budapest, Hungary. 19.5.2015

In Hufvudstadsbladet was a story about the atmospheric measurements made on top of Hotel Torni in Helsinki city centre: . Short video in Yle Areena about the measurements at Hotel Torni (in Swedish).18.5.2015

Silja Häme defends her PhD thesis "Nanoparticle volatility and growth: Implications for interactions between biogenic and anthropogenic aerosol components" on Thursday May 28th in auditorium E204 (Physicum, Gustaf Hällströmin katu 2a) at 12 o'clock. The opponent is Prof. Astrid Kiendler-Scharr from Forschungszentrum Jülich, Institute of Energy and Climate Research. 15.5.2015

Jouni Räisänen was nominated as the teacher of the year by physics students in University of Helsinki (Resonanssi ry). Congratulations! 11.5.2015

The global monthly average for carbon dioxide concentration in the atmosphere is now officially over 400 ppm. The next figure that we do not want to achieve is 450 ppm, since after that the global temperature will increase more than 2 Celsius based on the predictions of global climate models, commented Jouni Räisänen in Helsingin Sanomat. 8.5.2015

Climate is changing, which changes everything. An interesting article about climate change research at the University of Helsinki is published online. There are interviews from e.g. Markku Kulmala, Timo Vesala and Eija Juurola. Read the article (in Finnish) here: 6.5.2015

Ari Asmi interviewed in Yliopistolainen magazine (2/2015, on Open Data issues. 30.4.2015

Mari Pihlatie and Albert Porcar-Castell were granted with Academy Research Fellowship in biosciences and environmental research - congratulations! Mari focuses in her study to seasonality in the production, transport and emissions of CH4 from trees in boreal forest ecosystems, and Albert studies upscaling the link from chlorophyll fluorescence to photosynthesis. 24.4.2015

Radar meteorology and the ball-like radar visible in the silhouette of Kumpula campus is offering important information for weather forecasts, basic researchers, companies in radar technology like Vaisala and space agencies including NASA. Radar meteorology is a good example of close co-operation between researchers and technology industry, since Vaisala gets direct feedback of new radar equipment and software updates that the research team led by associate Dmitri Moiseev is testing, whereas the researchers and students are happy to use the latest radar technology. Read more in Finnish here. 22.4.2015

The 2015 Alfred Wegener Medal & Honorary Membership awarded to Sergej Zilitinkevich for creating the fundamentals of the theory of stratified planetary boundary layers. More information here. 21.4.2015

Ditte Mogensen will defend her PhD thesis "Insights into atmospheric oxidation" on Wednesday May 13th in auditorium E204 (Physicum building) at 13 o'clock. The opponent is Prof. Ülo Niinemets from Estonian University of Life Sciences. 20.4.2015

Risto Makkonen received the FAAR-award for "pioneering work in global aerosol modeling", at the Kuopio NOSA/FAAR conference. 1.4.2015

The "Pan-Eurasian experiment” searches for solutions to Northern climate and environmental issues. PEEX is a multi-disciplinary, multi-decadal research program for the Northern and the Arctic areas. It mostly involves basic research in the natural sciences, but is also expected to produce concrete and technical solutions for environmental problems. Read more from Science Daily. 31.3.2015

Jouni Räisänen was interviewed in Helsingin Sanomat about their newly published article in Nature Climate Change. The Gulf Stream has been weakening already for a century, which has an effect on climate in Northern Europe. What if the Gulf Stream stops? Read more here: 24.3.2015

Prof. Kulmala is interviewed in today's Newspaper about taking Stations for Measuring Ecosystem and Atmosphere Interactions (SMEAR) to China and Siberia. Read the news from Helsingin Sanomat here: 24.3.2015

Researchers in Atmospheric Sciences are tightening their collaboration. The National Institute for Integrated Atmospheric and Earth System Science INAR brings together the internationally top-level research groups from the Universities of Helsinki and Eastern Finland, Tampere University of Technology and Finnish Meteorological Institute. Read more here. 13.3.2015

FINNARP 2014 has arrived from their successful expedition to Antarctica, where they were studying aerosols, meteorology, snow and lakes. The group of researchers included people from the Finnish Meteorological Institute and University of Helsinki, including aerosol researchers Mikko Sipilä and Tuija Jokinen. Read more in Verkkouutiset or Savon Sanomat. 13.3.2015

Ari Asmi made a blog post in on benefits to the researcher from sharing data  11.3.2015

Markku Kulmala interviewed by YLE about climate change research and mitigation to climate change. Read the news in Finnish here. 9.3.2015

Prof. Chandrasekar is featured in TEKES FiDiPro video segment: 6.3.2015

Dmitri Moisseev is interviewed in Academy of Finland Apropos article about rain and melting water in urban environments. The study is part of the URCA project consortium 6.3.2015

Juha Tonttila defends his PhD thesis "From turbulence to cloud formation - modelling the aerosol-cloud interactions" on 10. of March at 15:00 in Exactum CK112 aiheesta. The opponent is prof. Corinna Hoose (Karlsruher Institut für Technologie, Saksa). 5.3.2015

Ari Asmi was interviewed for UHEL news article about research data and open data policy. The article was titled "KAIKKI DATAN

Tinja Olenius will defend her PhD thesis "Cluster population simulations as a tool to probe particle formation mechanisms" on 3rd of March at 12:15 in Physicum E204. The opponent is Klavs Hansen from University of Gothenburg. 3.3.2015

Academy prof. Markku Kulmala was awarded with a Distinguished Visiting Fellow status by the International Institute for Applied Systems Analysis (IIASA) for his important work in Atmospheric sciences. Research coordinator Hanna Lappalainen from the University of Helsinki and Finnish Meteorological Institute received a silver medal from International Eurasian Academy of Sciences (IEAS) for her contributions as PEEX Executive Officer. Read the press release in Finnish here. 12.2.2015

The 1st Pan-Eurasian Experiment (PEEX) Science Conference and The 5th PEEX Meeting in Helsinki, Finland 10-13 February 2015. Please read more from the press release. 10.2.2015

Intensive winter and summer schools organized in Hyytiälä 2015. Hyytiälä winter school on Atmospheric Processes and Feedbacks and Atmosphere-Biosphere Interactions is held March 15-26, and Summer School on Atmospheric Aerosol Physics, Measurement, and Sampling May 1-8. These international courses are intended PhD students. Please find more information from the following links: Winter School and Summer School. 30.1.2015
Winter School:
Summer School: FCoE/summerschool2015

Kai Ruusuvuori will defend his PhD thesis "Modelling the Role of Charge in Atmospheric Particle Formation Using Quantum Chemical Methods" in Physicum auditorium E204 on Friday 6th of February at 12 o'clock. The Opponent will be Prof. Henrik Grum Kjærgaard from University of Copenhagen, Denmark. 22.1.2015

Interested in summer work at a Center of Excellence in multi-disciplinary atmospheric and ecosystem research? Read more here in Finnish or in English.

Professor Kulmala interviewed in YLE Morning-tv about the role that chance plays in scientific breakthroughs. The interview can be watched here:

John Backman will defend his PhD thesis "Optical properties of atmospheric aerosols using filter-based absorption photometers" on Friday January 23rd in auditorium E204 (Physicum) at 12 o'clock. The opponent is PhD John Ogren, leader of of NOAA's Aerosols Group at the National Oceanic and Atmospheric Administration (NOAA). 19.12.2014

Mikael Ehn has received European Research Council (ERC) Starting Grant for Comprehensive molecular characterization of secondary organic aerosol formation in the atmosphere. 18.12.2014

The Finnish work environment fund ( has decided to fund a consortium project "Materiaalia lisäävän valmistuksen (3D-tulostus) hiukkas- ja kaasupäästöt eri työvaiheissa - Aerosol particle emissions during 3-D-printing", Kaarle Hämeri the project principal investigator,

Academy of Finland Arctic Research Programme has decided to fund three four-year projects led by our CoE-members, congratulations! i) Jouni Pullianen (FMI) and Timo Vesala (UHEL) consortium - Carbon Balance under Changing Processes of Arctic and Subarctic Cryosphere; ii) Hanna Vehkamäki (UHEL), Annele Virtanen (UEF), Sami Romakkaniemi (FMI) and Jorma Keskinen (TUT) consortium - Ice Clouds and Ice Nucleation in Arctic; iii) Jukka Pumpanen (UHEL) - Long term effects of fire on carbon and nitrogen pools and fluxes in the arctic permafrost and subarctic forests. 11.12.2014

A front cover -paper published in Physical Chemistry Chemical Physics by Bork, Loukonen, Kjærgaard and Vehkamäki. Acetonitrile–hydrogen chloride cluster is one of the best model systems for atmospheric acid–base clustering studied by IR spectroscopy to date. They have shown that the highly unusual spectral shape associated with the fundamental H–Cl stretch mode in this complex is due to the dynamics of the N–H–Cl angle, not captured by the conventional static minimum energy picture of the cluster. Read the article here:!divAbstract9.12.2014

Finland has several scientific expert panels which enhance the dialogue between the scientific community and the society in questions related to sustainable development. On 4th December 2014, Future Earth Finland – national committee for global change research and Forum for Environmental Information invited these panels to discus how to promote sustainable development through deeper cooperation. The participants were representatives from the national Climate Panel, Panel for Sustainable Development, Government working group for the coordination of research, foresight and assessment activities, Council for Strategic Research, Council for Economic Policy, Future Earth Finland, Forum for Environmental Information, and the Finnish IPBES panel and panel for bioeconomy which are in preparatory phase. For more information read the press release (in Finnish). 8.12.2014

Li Liao will defend his PhD thesis "Contribution of biogenic volatile organic compounds to the formation and growth of particles in the atmosphere − from molecule cluster to cloud condensation nuclei" on Tuesday December 16th in auditorium E204 (Physicum) at 2 p.m. The opponent is Associate Professor Annele Virtanen from the University of Eastern Finland. 3.12.2014

Prof. Kaarle Hämeri nominated as new chair of the Finnish Union of University Professors. Read more from Akava. 3.12.2014

Finnish climate researchers are planning a new observation station in China, possibly in the Beijing region. The project will be conducted in cooperation with local research groups from the ground up. The University of Helsinki is also preparing an air quality education programme for the Chinese. More information in Finnish and in English, read also YLE news or listen Markku's interview from the radio (in Finnish, available 7 days). 26.11.2014

Anu-Maija Sundström will defend her doctoral dissertation entitled "Remote Sensing of Aerosols: Applications for Air Quality and Climate Studies" on 10.12.2014 at 12:00 in Exactum CK112. Senior Scientist Michael Schulz, Norwegian Meteorological Institute, will serve as the opponent. 25.11.2014

Professor Markku Kulmala elected as President of the European Regional Science Centre of the International Eurasian Academy of Sciences. More information available in Finnish and in English. 24.11.2014

A research expedition FINNARP 2014 is heading to Antarctica for two months to study aerosols, meteorology, snow and lakes. The group of researchers includes people from the Finnish Meteorological Institute and University of Helsinki, including aerosol research team led by Mikko Sipilä. Read more here.18.11.2014

Our yearly Center of Excellence (CoE ATM) seminar gathered together 12.-14.11. in Kumpula a large group of scientists working with biosphere-atmosphere interactions at the Universities of Helsinki and Eastern Finland and the Finnish Meteorological Institute. With the 187 participants, this was by far the largest of our seminars. The idea of the yearly seminar is to present our latest and ongoing research to the Scientific Advisory Board members, and to other CoE ATM members to establish new collaboration between teams. The Proceedings of the seminar are available online at FAAR Report Series. 18.11.2014

Nea Kuusinen will defend her dissertation "Boreal forest albedo and its spatial and temporal variation" in the University main building room 10 on the 7.11.2014 at 12 o'clock. The opponent will be Pierre Bernier from the Canadian Forest Service. The Kustos will be Professor Pauline Stenberg. 23.10.2014

Prof. Tuukka Petäjä leads a research project called BAECC, "Biogenic Aerosols Effect on Clouds and Climate." Petäjä and over 50 researchers from all over the world unravel the microphysical processes of the atmosphere that are connected to global climate. The most important institutional participant of BAECC is U.S. Department of Energy, which has provided state-of-the-art laboratory instrumentation and measurement technology for the project. Please read more from Acatiimi.20.10.2014

Prof. Kulmala has been nominated to the administrative council of the International Society for Digital Earth (ISDE) and to the editorial board of the International Journal of Digital Earth. Digital Earth is a framework for geographically linked research and applications in the physical and social domains of the Earth, a digital modeling platform to monitor, measure, and forecast natural and human activity on the planet. As a global initiative, Digital Earth aims to improve social conditions, protect the environment, and support future sustainable development. 14.10.2014

Prof. Annikki Mäkelä received IUFRO Scientific Achievement Award 2014, congratulations! Read more here.10.10.2014

FiDiPro professor Douglas Worsnop awarded with the Fuchs Award 2014, congratulations! The Fuchs Memorial Award recognizes outstanding original research contributions to the field of aerosol science and technology. It is considered the highest honor for researchers in the field.  20.9.2014

Academy Prof. Markku Kulmala has been nominated to the Strategic Research Council (SRC) at the Academy of Finland. SRC provides funding to problem-based, long-term and programme-based research aimed at finding solutions to the major challenges facing Finnish society. The SRC was appointed by the Government for a three-year term, with a possible extension of a further three-year term. More information available in English and in Finnish. 26.9.2014

A novel structure for greenhouse gas observations and research in Europe has been built up. The Integrated Carbon Observation System (ICOS RI) is a pan-European Research Infrastructure that comprises over 100 atmospheric, ecosystem and ocean observation stations distributed over 10 countries. ICOS RI provides long-term, coherent, precise and quality-controlled observation data on greenhouse gases to support research and to help curb and monitor emissions. Please read more in English here or in Finnish here. 19.9.2014

Tealemetree workshop gathered artists and scientists to SMEAR II station. The pines of the study site were witnessing the creation of many new artistic-scientific study methods. The workshop was led by a German artist Agnes Meyer-Brandis, who started as a residence artist in SMEAR II already last year. The workshop was a part of the Climate Whirl project. A taster of the workshop and one of its outcomes is available at:

Prof. Markku Kulmala interviewed in YLE Puheen Aamu about his research and climate change. The interview can be listened in Yle Areena: (start listening at point 01:04:20) 28.8.2014

Associate Prof. Tareq Hussein has received an award "Distinguished Researcher in the field of Energy, Water and Environment" granted by the Ministry of Higher Education in Jordan. More information in Arabic:

Dr. Mikko Sipilä invented an instrument that can detect explosives in extremely small amounts and has thus high potential to be used in security controls for example at airports. The invention was a side product of the work done to develop a research instrument for studying elvocs in the atmosphere. Read more in Finnish from Helsingin sanomat and from the Academy of Finland web pages. 19.8.2014

The first ICOS Science Conference in Brussels 23-25 September, 2014. Extended deadline to register is 15th Aug.
More information at the conference website:

Ulla Makkonen defends her PhD thesis 'Measurements of inorganic ions and their precursor gases in ambient air' in Auditorium A110 of the Department of Chemistry on 15 August 2014, at 12 o'clock noon. 12.8.2014

Researcher Aki Virkkula interviewed in YLE News (in Finnish) about the effect of forest fires on climate:

Professor Marja-Liisa Riekkola interviewed in YLE Radio Tiedeykkönen:

An article showing that estimates of regional GPP in the boreal region results in a substantial overestimation if moss is not differentiated from higher plants was published in Nature Communications. Find the article here 1.7.2014

Five of our researchers have been selected as Thomson Reuters Highly Cited Researchers 2014:
Markku Kulmala (Geosciences), Douglas Worsnop (Geosciences, Engineering), Veli-Matti Kerminen (Geosciences),
Tuukka Petäjä (Geosciences), Ari Laaksonen (Geosciences).
Please read more here:   and
here 23.6.2014

Prof. Heikki Järvinen interviewed in local news (in Finnish) about Decade project and climate change predictions:

Congratulations Academy Professor Timo Vesala! Read more here.11.6.2014

New radar technology enables observations of all forms of water, also snow. This will help in more detailed detection of rainfall. Read more in Keski-Uusimaa, Maaseudun Tulevaisuus and Tekniikka&Talous. 5.6.2014

Martta Toivola defends her PhD thesis titled "Structural simulation of molecular clusters and vapor-liquid interface" on 19th of June 10 o'clock in Physicum auditorium E204. 27.5.2014

National Climate Report calls for significant reductions in black carbon emissions. Using fire places in a proper way to ensure pure burning of wood is especially important during the winter seasons. Read more from Helsingin Sanomat.23.5.2014

Prof. Hanna Vehkamäki is awarded of high-level research in quantum chemistry by The Finnish Aerosol Research Foundation. Read more here in Finnish.21.5.2014

Two Chinese honorary professorships to Markku Kulmala from the University of Fudan and Institute for Remote
Sensing and Digital Earth Chinese Academy of Science. Please read more in Finnish here.21.5.2014

Antti-Ilari Partanen will defend his PhD thesis "Modelling solar geoengineering via aerosol injections" on Friday 23rd of May at 12 o'clock in Lecture room L22, Snellmania Building of University of Eastern Finland, Kuopio campus. The electronic version of my thesis is available at:   15.5.2014

16.-19.9. 2014 An international group of lake gas flux orientated people led by professors Paul Hanson and Timo Vesala will organize a workshop in Finland with the topic "Advancing the science of gas exchange between fresh waters and the atmosphere". Find more information here.16.9.2014 

Jussi Samuli Ylhäisi will defend his PhD thesis titled "Limitations of climate model simulations to support climate change adaptation" in Exactum B123 on 17 June at 12 o'clock. 17.6.2014

Ella-Maria Kyrö will defend her PhD thesis "Aerosol processes in Polar regions - from the formation to climatic implications" in Physicum auditorium E204 on Friday 13 June, at 12 o'clock. 13.6.2014

Tuomo Nieminen defends his PhD thesis "Long-term trends and large-scale spatial variability of new particle formation in continental boundary layer" on Tuesday 27 May at 12 o'clock in Physicum auditorium E204. 27.5.2014

Prof. Markku Kulmala is the most cited researcher in the world in the field of Geosciences already third year in a row according to the ISI Web of Knowledge. Read more here (in Finnish) 14.5.2014

Ville Loukonen defends his thesis "SULFURIC ACID AND AMINES IN ATMOSPHERIC CLUSTERING: FIRST-PRINCIPLES INVESTIGATIONS" on Friday 9th of May 2014 at 12 o'clock, in Physicum auditorium E204 (Gustaf Hällströminkatu 2a). 9.5.2014

A book that presents achievements of Finnish science is published by Gaudeamus. Among the 100 most appreciated names in science and technology during the last 300 years we can find one from our Center of Excellence - congrats Markku! 6.5.2014

Research on greenhouse gases is strengthened through ICOS (Integrated Carbon Observation System). ICOS tracks carbon fluxes in Europe and adjacent regions through integrated monitoring networks, provides long-term observations and monitors the effectiveness of greenhouse gases emission reduction activities. ICOS has its head office led by Werner Kutsch in Kumpula, Helsinki. Read more from ICOS web pages:  30.4.2014

Intel has selected CSC – IT Center for Science Ltd. as one of its Intel Parallel Computing Centers. CSC will collaborate with Intel to develop parallel algorithms and optimize several open source high-performance computing (HPC) applications for Intel's latest parallel processor architectures. The work will be conducted by CSC in collaboration with Finnish Centre of Excellence in Atmospheric Science research unit and Bull's Center for Excellence in Parallel Programming (IPCC).
Read more here:  28.4.2014

Anna Frey defends her PhD thesis "Study on soot and other refractory components from various combustion processes" in the Physicum auditorium E204 (Gustaf Hällströmin katu 2a, Kumpula campus, Helsinki) on Friday April 25th at 12 o'clock noon. 25.4.2014

Carbon Tree - a tool to learn by discovering. Carbon Tree is an excellent example of our outreach activities, please read more (in Finnish): 17.4.2014

A 32-year study of subarctic forest moths in Finnish Lapland suggests that scientists may be underestimating the impacts of climate change on animals and plants because much of the harm is hidden from view. The results are published in Global Change Biology. Please read more here.  16.4.2014

Samara Carbone defends her thesis "Chemical characterization and source apportionment of submicron aerosol particles with aerosol mass spectrometers" in the Physicum auditorium E204 (2nd floor), Gustaf Hällströminkatu 2, Kumpula Campus, Helsinki on April 5th at 13 o'clock. The opponent is Prof. Joakim Pagels from Lund University. 5.4.2014

Prof. Markku Kulmala and prof. Jaana Bäck interviewed in Yle News (Svenska): Skogsdoften skyddar mot klimatuppvärmningen:   1.4.2014

Professor Timo Vesala has joined the national climate panel. The new chair is professor Markku Ollikainen. 25.3.2014

Our Integrated Atmospheric and Earth System Science Research Infrastructure (INAR) belongs to the Finland's research infrastructure strategy and the recently established National Research Infrastructure Roadmap (2014). Please read more here:  17.3.2014

Siegfried Schobesberger defends his PhD thesis 'Experimental studies on nucleation and atmospheric aerosol particle formation down to the molecular level' in Physicum auditorium E204 (Gustaf Hällströminkatu 2a) on Friday 14th of March 2014 at 12 o'clock (noon). The opponent will be Prof. Hugh Coe from the University of Manchester, kustos will be Prof. Markku Kulmala. 14.3.2014

Nasa's new satellite for global precipitation measurement was launched to space today! Finnish researchers, including our CoE, has been involved in developing the system. Find more information in Aamulehti.28.2.2014

Harri Portin defends his thesis "Observations of aerosols, clouds and their interactions at Puijo measurement station" on Friday 28th February 2014 at 12:00, in lecture room L22, Snellmania building of the University of Eastern Finland at the Kuopio campus.The opponent will be doctor Peter Tunved from the Stockholm University, and the custodian Professor Kari Lehtinen. 28.2.2014

Article published in Nature by Ehn et al. "A large source of low-volatility secondary organic aerosol" Nature 506: 476–479 doi:10.1038/nature13032  27.2.2014

BBC News: Smell of forest pine can limit climate change - researchers:  27.2.2014

Read also:

In the morning news (YLE) prof. Tuukka Petäjä and Annakaisa von Lerber interviewed: U.S. Department of Energy is having an intensive measurement campaign in Hyytiälä
Please see the YLE news here:  13.2.2014

Please read more from YLE:

Helsingin Sanomat:


The Nordic Aerosologist Award 2014 goes to Prof Hanna Vehkamäki. Read more 3.2.2014

Deadline for abstract submission to 4th iLEAPS Science Conference 2014. More information: 31.01.2014

Bjarke Mølgaard defends his PhD thesis 'Outdoor urban aerosols and their transport and fate indoors' on Friday 24 January at 12 noon in Physicum E204. The opponent is Professor Roy Harrison from University of Birmingham. 24.01.2014

Helsingin Sanomat. Article in the Science section about Markku Kulmala and the value of SMEAR-data for global climate research  18.01.2014 

Heikki Junninen defends his PhD thesis 'Data cycle in atmospheric physics: From detected millivolts to understanding atmosphere' on Tuesday 14th of January at 12 noon in Physicum E204. The opponent is Senior Researcher Üllar Rannik from Institute of Physics of University of Tartu. 14.01.2014

Tuukka was appointed as Professor in Physics 1.11.2013 and now he is awarded with Väisälä award, congratulations! Please read more (only in Finnish, sorry): 12.12.2013

Globaalimuutostutkimuksen kansalliskomiteoiden eurooppalainen verkosto The European Alliance of Global Change Research Committees on valinnut professori Markku Kulmalan puheenjohtajakseen kaudelle 2014–2016. Nimitys tehtiin allianssin kokouksessa, joka pidettiin Helsingissä 3.–4. joulukuuta 2013. 10.12.2013

Sanna-Liisa Sihto-Nissilä defend her PhD thesis "Studies on the connections between atmospheric sulphuric acid, new particle formation and cloud condensation nuclei" on Fri 29th Nov, 2013, at 12 o'clock in Physicum (Gustaf Hällströmin katu 2a, Helsinki), in the 2nd floor auditorium E204. Opponent Prof. Erik Swietlicki, Lund University, Sweden, custos is Markku Kulmala. 29.11.2013

November 2013. Book by Ari Heiskanen "Läpimurto - taltuta tuhoajat" about management of change is published. He denotes money from each sold book to climate change research and education. Thank you! Read more here

Ladislav Šigut, a PhD student from the Czech Republic that is currently doing a stay in Micro Meteorology Group will present his recent work on "Upscaling fluxes from Shoot (Chamber) to Ecosystem (eddy) level". Place: Viikki, Forest Sciences, B-Building, Room 243. Time: on Friday 15th November at 14:00. 15.11.2013

Marja-Liisa Riekkola is 21st in the list of the 100 most influential people in the analytical sciences. Congratulations! Read more from 15.11.2013

Seminar about SMEAR data - where to find and how to use it - on Wednesday 13th of November at 14.15 in Exactum room CK112. 13.11.2013

Totti Laitinen defends his PhD thesis "Applicability of a two-step laser desorption-ionization aerosol time-of-flight mass spectrometer for determination of chemical composition of ultrafine aerosol particles" in Chemicum auditorium A110 (A.I. Virtasen Aukio 1, Helsinki) on Fri 8.11.2013 at 12:00. 08.11.2013

Session of the EGU General Assembly 2014:Pan Eurasian Experiment (PEEX) Convener: Tuukka Petäjä Co-Conveners: Hanna K. Lappalainen, Alexander Baklanov, Anatoly Shvidenko Link: Detailed information on how to submit an abstract can be found at: . The deadline for the receipt of abstracts is 16 January 2014. 29.10.2013

PEEX-4 will be held during on 5-6 March 2014 in the headquarters of Russian Geographical Society in St. Petersburg, Russia. The Workshop starts on 6. March in the morning; so that participants are expected to arrive on March 5th. The host institution is Russian State Hydrometeorological University (RSHU) 29.10.2013

MSc (Agric. and Forestry) Anna Lintunen's PhD thesis, 'Crown architecture and its role in species interactions in mixed boreal forests' will be publicly examined on Friday, Oct. 18th, at 12 o'clock noon in lecture hall 1041, Biokeskus 2, Viikki. The opponent will be prof. Christian Messier,  University of Quebec, Canada, and the custos prof. Jaana Bäck. The dissertation can be found in 18.10.2013

Guest lecture of Prof. Christian Messier on  “Advancing biodiversity – ecosystem functioning science using high-density tree-based experiments over functional diversity gradients ” on Thursday, October 17th, 14:15-16  in Lecture Hall B6, Forest Sciences Building, Viikki 17.10.2013

Ville Vakkari defends his thesis "On the sources of submicron aerosol particles in savannah: implications for climate and air quality" in the Auditorium of Finnish Met. Inst., Erik Palménin aukio 1,on at 12 oclock noon. The opponent is Professor Aijun Ding from Nanjing University. 11.10.2013

Earth System Modeling Workshop, Helsinki, 7-10.10.2013 06.10.2013

Taina Yli-Juuti defends her thesis "On the growth of atmospheric nanoparticles by organic vapors" in Physicum auditorium D101 (Gustaf Hällströmin katu 2a, 00560) on Thursday 29 August 2013 at 12 o'clock. Opponent Prof. Mattias Hallquist (Univ. Gothenburg, Sweden); kustos Prof. Markku Kulmala. 29.08.2013

Blog: Statistics, climate research and applications03.07.2013

Blog: Building ICOS RI: Integrated Carbon Observation System Research Infrastructure25.06.2013

Blog: Atmospheric supermodels25.06.2013

Blog: Brainstorming for an iLEAPS-ESA Biosphere-atmosphere-society index24.06.2013

Blog: OpenIFS – a leading model of atmospheric dynamics24.06.2013

The first summer school in atmospheric modelling was organised in Lund, Sweden, from 10-19th of June. During the course, the participants coded their own one-dimensional column model consisting of modules for boundary layer meteorology, biogenic emissions of volatile organic compounds from vegetation, atmospheric gas phase chemical reactions and aerosol dynamics. 19.06.2013

FM Svante Hendriksson defends his thesis "Modelling Key Processes Causing Climate Change and Variability", 15.Jun, 12:00 in Physicum in Kumpula, Gustaf Hällströmin katu 2 A, auditorium D101. Opponent Dr. Johann Jungclaus (Max Planck Institute for Meterology, Germany). Custos Prof. Veli-Matti Kerminen. 15.06.2013

PhD dissertation: MSc Sanna Susiluoto will defend her thesis 'Growth limitation of trees and carbon balance of the vegetation in the treeline zone in north eastern Lapland' on June 14th, 2013 at 12am in the University Main Building, Hall 12. Opponent Prof. Federico Magnani, University of Bologna, custos prof. Annikki Mäkelä. 14.06.2013

Blog: Latest views on global CO2 emissions and sinks14.06.2013

Visiting lecture, June 13th at 10:15, lecture room 243, Dept of Forest Sciences, Viikki campus:
Prof. Federico Magnani, Univ of Bologna: 'The effects of N-Deposition on the carbon balance of Forest Ecosystems' 13.06.2013

Zeppelin research flights will continue still for one week. The flights have
been between Jämijärvi-Hyytiälä, Jämijärvi-Tampere-Hyytiälä or close to
Jämijärvi area. Preliminary results suggest new findings.

The future of the Arctic: IIASA researchers and Finnish policymakers and scientists met in May to outline a new research agenda addressing the challenges facing the Arctic region. The seminar, jointly organized by IIASA, The Finnish Prime Minister's Office, and the Academy of Finland, brought together stakeholders to share views, discuss and clarify the kind of Arctic research that is most needed to help guide the region through an uncertain future. Prof Markku Kulmala gave a Finnish view on climate change issues. More information:

The Centre of Excellence in Atmospheric Science From Molecular and Biological Processes to the Global Climate, a joint venture of University of Helsinki, University of Eastern Finland and the Finnish Meteorological Institute, was designated as an Academy of Finland Centre of Excellence for the third time in a row. Read the press release 04.06.2013

Blog: Measuring smaller and smaller particles04.06.2013

Prof. Kulmalan ZEPPELIINI OSANA ILMAKEHÄTUTKIMUSTA -seminaari Helsingin yliopiston fysiikan laitoksella Kumpulassa.
Ilmoittautumiset sähköpostitse Mai Allolle,, tai Tuukka Petäjälle, tuukka.petaja@helsinki.fi31.05.2013

Zeppelin seminar. Tentative time schedule.31.05.2013

M. Kulmala interviewed on TV-2 at 21.00-21.50 "Ajankohtainen kakkonen", topic " Zeppelin and our research". 28.05.2013

PhD defence of Joonas Koivisto "Source Specific Risk Assessment of Indoor Aerosol Particles". The defence takes place in Department of Physics Auditorium E204 at 12. The opponent is Professor Ian Colbeck from Essex, UK. 23.05. 2013

Zeppelin flight campaign in Hyytiälä-Jämijärvi, Finland in May-June 2013 (PEGASOS EU-FP7 project 265148). For the Zeppelin location see

Nanjing University had a ceremony to confer the honorary professorship on Prof. Markku Kulmala of the University of Helsinki. 26.04.2013

Paasonen, P., et. al. 2013 "Warming-induced increase in aerosol number concentration likely to moderate climate change" published in Nature Geoscience doi: 10.1038/NGEO1800 28.04.2013

FMI opens call for tenure-track positions. Applications must be addressed to the Finnish Meteorological Institute; they can be sent via email to or delivered by post to: Ilmatieteen Laitos, PO Box 503, FI-00101 Helsinki. The closing date for applications is 2 April 2013 at 12:00 UTC.Further information may be obtained from Professor Yrjö Viisanen, Director of Research and Development,, +358-50-3366919.Call text 08.03.2013

PEEX-3 meeting will take place in Hyytiälä, Finland on 26.-28.8. 2013. More information soon available, see 04.03.2013

Markku Kulmala on the radio interview  (on  "Direct Observations of Atmospheric Aerosol Nucleation" published in Science Vol. 339 no. 6122 pp. 943-946 DOI: 10.1126/science.1227385) 02.03.2013

The next seminar will take place on Friday 1 March 2013 13:30-15:00 in room K177 (Dept of Forest Sciences, Latokartanonkaari 7).Tuukka Petäjä will present the plans for the future ARM and Zeppelin campaigns around Hyytiälä next year.(ARM: Airborne Carbon Measurements ) 01.03.2013   

Kulmala et al. 2013  "Direct Observations of Atmospheric Aerosol Nucleation" published in ScienceVol. 339 no. 6122 pp. 943-946 DOI: 10.1126/science.1227385 . Press release. 22.02.2013

Biogenic Aerosols-Effects on Clouds and Climate (BAECC) will bring ARM Mobile Facility (AMF2), funded from US Department of Energy, to SMEAR II station in Hyytiälä.Further information: and 18.02.2013

As part of PEGASOS-project, Zeppelin airship will be conducting aerosol measurements around Hyytiälä SMEAR station in May-June 2013.Further information: or and

Second PEEX (Pan Eurasian Experiment) meeting in Moscow 12.-14.2.2013

Ms Terhi Rasilo (MSc) will defend her thesis on aquatic sciences entitled 'Connecting silvan and lacustrine ecosystems: transport of carbon from forests to adjacent water bodies' on 1 Feb. 2013 at 12 o'clock, place in Viikki, Biocenter 2, auditorium 1041. Opponent prof. em. John Grace, School of Geosciences, University of Edinburgh, UK and custos prof. Jorma Kuparinen, Department of Environmental Sciences. 01.02.2013

Dr. D. Moisseev has started working as an assistant professor in Radar meteorology at the Department of Physics. The professor position is shared by the University of Helsinki, Finnish Meteorological Institute and Vaisala Oyj. In addition to conducting research Dr. Moisseev is responsible for leading the radar laboratory and development of teaching in the field of radar meteorology. 15.01.2013.

Ari Asmi PhD thesis " Natural and anthropogenic influences on tropospheric aerosol variability " in Physicum auditorium E204 on Friday the 14th of December, 2012, at 12 o'clock. The opponent is Dr. Andreas Maßling from Aarhus University and the kustos is Acad. Prof. Markku Kulmala. 14.12.2012

Visiting lecture by Ass. Prof. Riikka Rinnan, on the topic 'Two decades of climate change experiments in the Subarctic – from soil microorganisms to volatile organic compounds' On Dec 11th, 2012 at 12:15 in Viikki, lecture hall B4 11.12.2012

MSc Hermanni Aaltonen is defending his doctoral dissertation entitled 'Exchange of volatile organic compounds in the boreal forest floor' in Faculty of Agriculture and Forestry, University of Helsinki, on Dec 10th, 2012 at 12 o'clock noon.The public examination will take place at the following address: Exactum (Kumpula campus, Gustaf Hällströmin katu 2b), lecture hall B123. The opponent is Ass. Prof. Riikka Rinnan from the University of Copenhagen and the custos is Prof. Heljä-Sisko Helmisaari.  (Dept. of Forest Sciences). 10.12.2012

MSc Annika Nordbo will defend her doctoral dissertation entitled "Extending the applicability of the eddy-covariance flux-measurement technique" in the Faculty of Science, University of Helsinki, on  Nov 30th, 2012 at 12 o'clock noon.  The public examination will take place at the following address: Dynamicum, auditorio D101, Gustaf Hällströmin katu 2.  Prof. Janet Barlow, University of Reading, will be the opponent and the custos will be Prof.  Timo Vesala (Dept. of Physics). 30.11.2012

Doctoral Defence: Viskari Toni "Estimating Particle Number Size Distributions from Multi-Instrument Observations with Kalman Filtering" in auditorium D101, Gustaf Hällströmin katu 2, on November 9th, 2012, at 12 oclock noon. 09.11.2012

Johannes Leppä will defend PhD thesis "Dynamics of neutral and charged aerosol particles" in Physicum auditorium D101 on November 23th at 12 o'clock. The opponent will be Jyrki Mäkelä from Tampere University of Technology. 23.10.2012

Doctoral Defence: Grönholm Tiia "Deposition of Fine Particles over a Boreal Forest" in auditorium D101,
Gustaf Hällströmin katu 2, 2012, at 12 o'clock. 05.10.2012

Latest date for registration to FCoE 2012 Annual Meeting, 19-21.Sep (Hyytiälä), is Friday the 7th of Sep. The registration website: 03.09.2012

Paper by R.L. Mauldin III, T. Berndt, M. Sipilä, P. Paasonen, T. Petäjä, S. Kim, T. Kurtén, F. Stratmann, V.-M. Kerminen and M. Kulmala on "A new atmospherically relevant oxidant of sulphur dioxide is published today in Nature ( doi:10.1038/nature11278). 09.08.2012

Sami Haapanala will defend PhD thesis "Emission measurements of biogenic volatile organic compounds in multiple scales" in Physicum auditorium E204 (Gustaf Hällströmin katu 2a, 00560 Helsinki) at 12 o'clock. Opponent iProfessor Gabriel Katul (Duke University, US), Custos Professor Timo Vesala. 29.09.2012

FCoE annual meeting in Hyytälä. Abstract submission by 20th of August. 19.-21.09.2012

FCoE event at the Think Corner - for video presentations see 29.06.2012

FCoE events and presentations at the Think Corner (street address Aleksanterinkatu 7). Programme  18.-20.06.2012.

Academy Professor Markku Kulmala is awarded by Bayer Climate Award 2012 for his for pioneering work on aerosols as a climate factor.The presentation will be made during the annual conference of the Leopoldina – German Academy of Sciences in Berlin on September 22, 2012 Awards Online video 04.06.2012

Pauli Paasonen will defend PhD thesis 'Analyses on the formation of atmospheric particles and stabilized sulphuric acid clusters' on Friday, June 1st, 2012 at 14 o\'clock in auditorium D101 (Physicum). The opponent is prof. Joachim Curtius, Institute for Atmospheric and Environmental Sciences, Goethe-University of Frankfurt am Main, Germany. PhD Defence

CLIMATE CHANGE - A BANGLADESH PERSPECTIVE by H.E. Foreign Secretary of Bangladesh: Mr. Mohamed Mijarul Quayes Thursday 31.5. 2012 15.00-16.00 Gustaf Hällströmin katu 2 A - Physicum, D101 auditorio.Seminar

Risto Makkonen will defend PhD thesi s 'From nanoclusters to climate forcers: global modeling of aerosol climate effects' on Thursday, May 31st, 2012 at 12 o'clock noon in Physicum E204. The opponent is Professor Peter Adams, Carnegie Mellon University, USA. PhD Defence 31.05.2012

Academy Proferssor Markku Kulmala nominated as Doctor, Honorus Causa by Eötvös Lorand University, Budapest. Awards 11.05.2012

Division of Atmospheric Sciences has been awarded by University of Helsinki for the successful evalution results; International evaluation of research and doctoral training at the University of Helsinki 2005-2010. Awards 07.05.2012

Summer workers for summer 2012 have been selected. More information: Tuukka Petäjä (tuukka.petaja at or Jaana Bäck (jaana.back at workers 30.04.2012

Prof. Markku Kulmala has recived a 2 year funding (2012-2013) from the Finnish Cultural Foundation for the Science Workshops on “New approach for Earth System modelling”.Recent funding decisions 28.02. 2012.

Prof. Markku Kulmala has been reveived a "Professor of Year 2012" award (13.01.2012). The "Professor of Year" is selected by the Finnish Union of University Professors. Awards 13.01.2012

Prof. Markku Kulmala has been nominated (1.12.2011) by the Finland’s Ministry of the Environment as a Chair for the National Climate Panel. The National Climate Panel has been established to promote the dialog between science community and policy makers. Nomination 01.12.2011