ABACUS: Arctic Biosphere-Atmosphere Coupling Measurements
Four field sites near Abisko, Sweden and Petsikko/Kevo, Finland provide data on the Arctic terrestrial biosphere's response to climate change. Observations include plant root measurements, soil CH4 emissions, and carbon/water exchanges at fine (~1m) and landscape (~100m) scales, collected between 2007 and 2009. The project integrates plant and soil studies with atmospheric measurements, aircraft observations, and modeling.