Any user of these data must cite Davis, K.J., Bakwin, P.S., Yi, C., Berger, B.W., Zhao, C., Teclaw, R., and Isebrands, J.G., 2003. The annual cycles of CO2 and H2O exchange over a northern mixed forest as observed from a very tall tower, Global Change Biology, 9, 1278-1293. 
We acknowledge the U.S. Department of Energy’s Office of Science for providing funding for AmeriFlux data resources. We also aknowledge professor Ankur R. Desai from the University of Wisconsin - Madison for providing the data. 
