0 Turner D. P. Ritts W. D. Zhao, M. Kurc, S. A. Dunn, A. L. Wofsy, S. C. Small, E. E. and S. W. Running 2006 Assessing interannual variation in MODIS-based estimates of gross primary production IEEE Transactions on Geoscience and Remote Sensing 44 7 1899-1907 gross primary production (GPP), interannual variation, modeling, MODIS, remote sensing http://ag.arizona.edu/srnr/research/wr/kurc/docs/Turneretal2006.pdf