== ACKNOWLEDGMENT == The GIMMS Global Agricultural Monitoring system is funded through an interagency agreement grant between USDA/FAS/OGA and NASA/GSFC. We request users of data products obtained herein to include a general statement crediting the NASA/GSFC GIMMS Group and the USDA Foreign Agricultural Service in written articles or presentations. For example, The Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI) used in this study was processed and produced by the NASA/Goddard Space Flight Center’s Global Inventory Modeling and Mapping Studies (GIMMS) Group through funding support of the Global Agricultural Monitoring project by USDA’s Foreign Agricultural Service (FAS).