List of people working in the Micrometeorology group.
Ivan Mammarella

Ivan Mammarella (PhD) is Professor of Biohydrometeorology.  His research is mostly related to biosphere-atmosphere interactions and, in particular, on measuring and understanding vertical exchange processes of momentum, energy, GHGs, other trace gases and aerosol particles between the atmosphere and different terrestrial ecosystems (forest, peatland and lake). He is the principal investigator (PI) of Hyytiälä-SMEAR II ICOS Ecosystem and Atmospheric stations. More about Ivan's research can be found from University of Helsinki research portal.

Timo Vesala

Timo Vesala has been Professor of Meteorology since 2001. He has acted as Academy professor since 2015. Vesala’s main research fields are micrometeorology, biosphere-atmosphere interactions, biogeochemical cycles – especially carbon and water cycles – in forests, wetlands, lakes and rivers, greenhouse and other trace gases and in general mass and heat transport and phase transitions in various atmospheric and ecophysiological systems. His expertise ranges from cell, plant, ecosystem and regional to global scales. Vesala is the leader of ICOS-Finland (Integrated Carbon Observation System). He has run a film club with Dr. Eija Juurola since 2009. He has prepared a popular talk “From Vertigo to Blue velvet – Connotations between movies and climate change”. More information about Timo's research can be found from University of Helsinki research portal.

Annalea Lohila

Annalea Lohila (PhD) is an associate professor (50/50 between INAR/Univ. Helsinki and Finnish Meteorological Institute) specialized in biogeochemical cycles and greenhouse gas flux measurements. She has contributed to building flux measurement stations compliant for ICOS and developing the measurements. Her work has dealt with carbon dioxide, methane and nitrous oxide fluxes between biosphere and atmosphere in different boreal ecosystems, particularly on pristine and managed peatlands. More information about Annalea's research can be found from University of Helsinki research portal.

Pasi Kolari

Pasi Kolari (PhD) is University researcher working on data curation, research infrastructures, greenhouse gas fluxes and forest ecophysiology. More about Pasi's research can be found from University of Helsinki research portal.

Xuefei Li

Xuefei Li (PhD) has broad interest in the biogeochemical cycle of diverse terrestrial ecosystems, including subtropical forests, peatland forest, pristine peatlands and urban wetlands. In the past, she has studied the light-use strategies of woody species, functional trait diversity and nitrogen resorption in a subtropical forest. In recent years, she mostly focuses on the fluxes and processes of greenhouse gases (CH4 and CO2 ) in northern wetlands using eddy covariance and stable isotope techniques, and on predicting the biosphere-atmosphere interactions in wetland using process-based model and land surface model. She is currently the principal investigator of the Academy of Finland funded project “MIso”, which aims to quantify CH4-related processes with in-situ stable isotope methods and to improve CH4 modelling. More about Xuefei's research can be found from University of Helsinki research portal.

Maarit Raivonen

Maarit Raivonen (PhD) works with carbon cycling of peatlands. Her research focuses on modelling, and especially on peatland methane emissions. More about Maarit's research can be found from University of Helsinki research portal.

Yann Salmon

Yann Salmon's (PhD) research focus is on water and carbon fluxes in trees and between trees and the atmosphere, what are the processes regulating those fluxes, how they are influenced by the environment and how this response affect the trees. In particular, he is interested in the effect of drought. Beyond the individual level, he studies how tree ecophysiology and fluxes: 1) impact biogeochemical cycles in forest ecosystems, and 2) how they respond to and shape tree ecology. More information can be found from University of Helsinki research portal.

Kukka-Maaria Kohonen

Kukka-Maaria Kohonen (MSc) is a PhD student working on carbonyl sulfide exchange in different boreal ecosystems. Carnoyl sulfide is tested as a proxy for plant photosynthesis. Her previous work concentrated on freshwater greenhouse gas exchange and she is still partly working on lake fluxes as well. Her PhD work is supported by Vilho, Yrjö and Kalle Väisälä foundation and ICOS-Finland. More information about Kukka-Maaria's research can be found from University of Helsinki research portal.

Toprak Aslan

Toprak Aslan (MSc) works on vertical turbulent fluxes of momentum, energy and gases between the atmosphere and biosphere measured by eddy covariance technique. His current research project, i.e. quantifying the effect of thinning on coupled carbon, water and energy cycles in managed boreal forests, aims to improve the scientific knowledge on understanding the role of forest management, particularly thinning, on boreal forest ecosystem carbon cycle and storage, energy balance and albedo.

Aki Vähä

Aki Vähä (MSc) is a doctoral candidate, currently working on his thesis 'Gas transfer in an acuatic environment' under the supervision of Acad. Prof. Timo Vesala, Prof. Petteri Uotila and Doc. Ivan Mammarella. His current research concentrates on eddy covariance fluxes, measured during the KITEX campaign in 2018 from the boreal river Kitinen. His other research topics include water-side turbulence. More about Aki's research can be found from University of Helsinki research portal.

Antti Leppänen

Antti Leppänen (MSc) has a background in mathematics. He is working with peatland methane emission modeling and model development with JSBACH-HIMMELI.

Aleksanteri Mauranen

Aleksanteri Mauranen (MSc) is a doctoral student working on the theory of stomatal control and gas exchange in trees. He's been developing a new theoretical framework for stomatal control functions and trying it out using the land surface model JSBACH. He's also part of the ecosystem processes group at INAR / Forest Sciences. More about Aleksanteri's research can be found from University of Helsinki research portal.

Mikko Skogberg

Mikko Skogberg (MSc) is a doctoral student working on greenhouse gas fluxes and carbon sequestration in agricultural ecosystems. He conducts and analyzes field measurements in Haltiala as part of his work in the stn MULTA project under the Carbon Action platform.

Matti Räsänen

Matti Räsänen (PhD) is mainly working on the water balance of smallholder farming systems in Kenya. He is specifically interested in rainwater harvesting, on-farm ponds, and drip irrigation. He has also studied the carbon and water exchange at African savanna ecosystems using the eddy covariance and chamber measurement techniques. More about Matti's research can be found from University of Helsinki research portal.


Xin Zhuang

Xin Zhuang (MSc) is working as a doctoral student on the physiology of phloem transport. Particularly, she studies how stress impact carbon and water fluxes inside plant individuals. Previously she studied provenance/inheritance-based plant trait variation and plant invasion physiology. Xin is generally interested in plant sciences, ecology, biogeography and paleontology.

Asta Laasonen

Asta Laasonen (BSc) is a MSc student in Atmospheric Sciences currently working on carbon monoxide exchange in different ecosystems. The research focuses on carbon monoxide fluxes measured by eddy covariance technique and chamber measurements.

Olli-Pekka Siira

Olli-Pekka Siira (PhD) is working as a postdoctoral researcher on the ecosystem greenhouse gas exchange studies. He has expertise on the issues of the land use, land use change, and forestry sector (LULUCF). He is studying ecosystems of forests, wetlands, agricultural land, and lakes. Olli-Pekka is especially interested in global change and paleoecology.

Mika Korkiakoski

Mika Korkiakoski (PhD) is working as a postdoctoral researcher on industrializing eddy covariance measurements together with Vaisala corporation. His previous studies and interests include greenhouse gas and energy fluxes, and their measurement methods in different boreal ecosystems, especially in managed peatlands and forests. Mika is also working as a PI of Lettosuo, one of the ICOS ecosystem stations in Finland.

Angelika Kübert

Angelika Kübert is a postdoctoral researcher who studies the impact of climate and land use change on greenhouse gas emissions of boreal ecosystems. Her major research interest focuses on how ecosystems adapt and feedback to global change (such as climate change, eutrophication, and land use change) from the leaf to the ecosystem scale. Angelika is in particular interested in the role of plants in the water and carbon cycling of ecosystems, using amongst others flux monitoring and stable isotope techniques to unravel underlying mechanisms. During her doctorate and postdoc at the Universities of Freiburg and Arizona, she experienced firsthand what severe impact drought and nitrogen loading have on ecosystem services provided by grasslands and forests, two factors strongly linked to human activities. More about Angelika's research can be found at the University of Helsinki research portal.

Abin Thomas

Abin Thomas (PhD) is a postdoctoral researcher working on land-atmosphere interactions related to the carbon and water cycles. He currently focuses on the available energy flux partitioning over the forest ecosystem and its feedback on the planetary boundary layer dynamics.

Eyrún Gyða Gunnlaugsdóttir

Eyrún Gyða Gunnlaugsdóttir (MSc) is a doctoral candidate in Atmospheric Science. The aim of her research is to improve our understanding of carbon cycle climate feedback processes and other greenhouse gas emissions in wetland ecosystems, using methodologies like the Eddy covariance technique for measuring ecosystem scale fluxes. Her previous research has been focused on environmental changes in higher latitudes, such as effects of climate change on carbon respiration from subarctic ecosystems dominated by biocrust.

Ellinoora Ekman

Ellinoora Ekman (MSc) is a doctoral student and her work focuses on carbon cycling in peatland ecosystems. Specifically, in her PhD she studies the effect of rewetting on greenhouse gas exchange (special focus on methane) in a forestry-drained peatland as a measure to mitigate climate change. She also uses land surface model JSBACH and process-based model HIMMELI to study carbon cycling in different peatland forests. Her supervisors are Assoc. prof. Annalea Lohila, Doc. Maarit Raivonen and Dr. Xuefei Li.

Jianbin Wang

Jianbin Wang is a PhD candidate at the State Key Laboratory of Grassland Agro-Ecosystem, Lanzhou University. He wants to research the carbon cycling in wetland ecosystems on the Tibetan plateau. At present, he mainly focuses on the mechanism of greenhouse gases produced by freezing-thawing processes in alpine wetland ecosystems.

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