Data at the Marena site, Oklahoma, were acquired through research grants from the USDA NIFA (Project No. 2012-02355) and National Science Foundation (IIA-1301789)
PhenoCam (B. Seyednasrollah, A. M. Young, K. Hufkens, T. Milliman, M. A. Friedl, S. Frolking, and A. D. Richardson.)