EGS XXV General Assembly, Nice, France, April 2000

HSA3.03 Atmosphere-biosphere interactions at short and long time scales (co-sponsored by OA): Interannual variability in the biosphere-atmosphere exchange

Event Information

It is recognized through recent years within long-term monitoring projects that significant interannual variability exists in various ecosystems. Variations in the annual net budgets shifting between sources and sinks for CO2 of the ecosystems are of intensive debate. The climatic causes and the ecosystems functioning are of prime interest for our improved understanding of annual and interannual variability. Investigations into these scientific problems cover field experimental activities, measurement techniques, long- time averaging procedures including methods on estimating of (interpolation) e.g. missing data, extrapolation in time and space, spatial variability within ecosystems, conditions of soil hydrology variations and fetch-limited atmospheric sampling with correction for arising non-linearity in the CO2 flux-estimation. At the ecosystems level the biosphere exchange of water, energy and CO2 described in Soil-Vegetation-Atmosphere-Transfer (SVAT) models are of key importance. State-of-the-art on SVAT models will be solicited and new developments for modelling the coupling between atmosphere and plants as well as soil processes are basic for our improved understanding of the complex biosphere- atmosphere exchange processes. We invite the atmospheric, biological, soil and hydrological communities to contribute to this scientific discussion. Papers and posters are equally welcome.

Preliminary List of Solicited Speakers

Co-Sponsorship

BAHC