background Overarching scientific questions Why does this terrestrial carbon sink exist? Where is it located? What is the cause of the large degree of interannual variability?…

Synthesis of Top-Down and Bottom-Up Scaling of Regional Terrestrial Carbon Dioxide Fluxes: An Overview of the Chequamegon Ecosystem-Atmosphere Study (ChEAS) K.J. Davis1 and…

CONSTRUCTING REGIONAL CO2 FLUXES USING FLUX-TOWER UPSCALING AND ATMOSPHERIC BUDGETS Results from the Chequamegon Ecosystem-Atmosphere Study (ChEAS) and beyond K.J. Davis1…

Why study biogeochemistry(sciences?) at regional scales? Ken Davis Department of Meteorology The Pennsylvania State University Hypotheses Most students of environmental sciences…

Recent progress in CO2 flux data assimilation Ken Davis Penn State/LSCE with D. Ricciuto, T. Hilton, A. Desai, P. Ciais, M. Reichstein, S. Piao Flux data assimilation workshop,…