CARBON, WATER, LAND USE

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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
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Atmospheric CO2
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The Carbon Cycle

• Sarmiento and Gruber (2002)

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Modeling Interannual Variations

• Ricciuto et al (2008)

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Future Land-Atmosphere Exchange?

• Sitch et al (2008), Global Change Biology

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Fluxnet
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Climate Drivers of Carbon Flux

• Temperature
• Precipitation
• Radiation
• CO2

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Climate Drivers of Carbon Flux
Interannual

• Temperature -gt Phenology
• Precipitation -gt Drought
• Radiation -gt Light Quality
• CO2 -gt Acclimation

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Phenology
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Water Table

• Sulman et al (in prep) Biogeosciences

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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