1. CARBON, WATER, LAND USE & CLIMATE
Understanding Interannual Variability in Surface-Atmosphere Greenhouse Gas Exchange
Ankur R Desai
Asst. Professor
Atmospheric & Oceanic Sciences
University of Wisconsin-Madison
Wisconsin Ecology Symposium Fall 2008

2. Atmospheric CO2

3. The Carbon Cycle
Sarmiento and Gruber (2002)

4. Modeling Interannual Variations
Ricciuto et al (2008)

5. Future Land-Atmosphere Exchange?
Sitch et al (2008), Global Change Biology

7. Fluxnet

8. Climate Drivers of Carbon Flux
Temperature
Precipitation
Radiation
[CO2]

9. Climate Drivers of Carbon Flux
Interannual ^
Climate Drivers of Carbon Flux
Temperature -> Phenology
Precipitation -> Drought
Radiation -> Light Quality
[CO2] > Acclimation

10. Phenology

11. Water Table
Sulman et al (in prep) Biogeosciences

12. Future Directions
Interactions and linkages at landscape scale among plants, soil, water bodies, atmosphere, people
Regional scale climate impacts on ecosystems and vice versa
Variability, change, and feedbacks
Disturbance, fire, invasives, forestry
Complex systems
Terrain, multiple GHGs
Ecological data assimilation
NEON and Network science