A comparison of water and carbon fluxes from two identical landuse sites within the same model domain

As a contribution to the NOAA/GCIP program, long-term measurements of energy and carbon fluxes, along with the atmospheric forcing parameters (radiation, wind, precipitation and temperature) were initiated in August of 1996 in central Illinois, near Champaign. To evaluate the representativeness of this single location, an addtional micrometeorological eddy covariance system was deployed at another soybean field 30 kilometer away from mid-July to early November in 1998. Comparisons between hourly, daily, weekly and total evaporation rates, NEE (net ecosystem exchange rate) of CO2, and precipitation will be discussed.