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Environmental Change Research Unit - ECRU

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Tracking carbon dynamic patterns and climate forcing through post-glacial mire development history by combining modern flux measurements and palaeoecological information
Impacts of climate change on Arctic environment, ecosystem services and society (CLICHE)
Biomarkers – a new potential method to study highly humified peat components
Past water table fluctuations and related changes in carbon accumulation rates in mires – a quantitative multi proxy-based reconstruction from different climate regimes
Impacts of multiple environmental stressors on subarctic lake food web dynamics (MESS)
Climate variability in NW Europe during the past 4000 years and its ecological consequences (CLIM-ECO)
Science workshop on past, present and fututure climate change
Long-term changes in lake ice conditions in northern Finland
Responses of Boreal ecosystem carbon exchange to changing environment in different spatio-temporal scales
Former Projects

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Environmental Change Research Unit (ECRU)
Department of Environmental Sciences
P.O. Box 65 (Viikinkaari 1)
FIN-00014 University of Helsinki
FINLAND

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Jan Weckström

 

CHILL-10,000

Lake Kilpisjärvi NW Finland, Photo: Ari Weckström

CLIMATE HISTORY AS RECORDED BY ECOLOGICALLY SENSITIVE ARCTIC AND ALPINE LAKES IN EUROPE DURING THE LAST 10,000 YEARS: A MULTI-PROXY APPROACH (CHILL-10,000)

EC Environment and Climate Research Programme; Contract ENV4-CT97-0642 (Korhola)

Duration: 1998-2001

General description:
Lake Toskal NW Finnish Lapland, Photo: Jan Weckström

The lack of adequate observational data is a serious impediment in climate model validation and improvement. The study of Holocene palaeoclimates can offer insights into the dynamics of climate change as well as providing a means to test the validity of different circulation models (GCMs). The primary objective of this work is to provide detailed, quantitative climate reconstructions across Europe during the last 10,000 years. These reconstructions will be achieved through the analysis of the extensive, and unique multi-proxy data available from the sedimentary deposits of remote high-altitude alpine and sub-arctic European lakes, largerly unaffected by human impact. A particular emphasis will be paid to the spatial and temporal variation of Holocene climates and the relevance of these patterns to the validation and improvement of GCM simulations.

Specific objectives:

  • to model the relationship between key aquatic and terrestrial organisms and climate for different regions in Europe using quality-controlled regional data-sets of biological and environmental data and the most appropriate multivariate techniques;
  • to use the modelled responses (transfer functions) to produce high-resolution, quantitative, and well-dated climate reconstructions for the last 10,000 years which can be used for the validation and improvement of the climate models;
  • to explore the forcing factors as well as the spatio-temporal characteristics and changing variability of climate in Europe during the last 10,000 years;
  • to compare and contrast the high-resolution records of European climate produced in this work with that deduced on the basis of existing palaeoclimate data;

Project partners:

Co-ordinator: Atte Korhola (University of Helsinki)

Partners:

Finnish research team: