Satellite/Image Data Download Data by Dekad   Choose an Image Product and a Spatial Extent   Image Product: Choose an Image Product NDVI (Normalized Difference Vegetation Index) NDVI-17 RFE (Rainfall Estimate) Spatial Extent: Choose a Spatial Extent Africa Central Africa Greater Horn of Africa Sahel West Africa Southern Africa      Bulk Data Download by Year   Download a Year of Data (36 Dekads) at One Time   Image Product: Choose an Image Product NDVI (Normalized Difference Vegetation Index) NDVI-17 RFE (Rainfall Estimate)   Spatial Extent: Choose an Extent Africa Central Africa Greater Horn of Africa Southern Africa West Sahel Africa   Bulk Daily Data Download   Download daily data by day, month or year   Image Product: Choose an Image Product Africa Rainfall Estimate (RFE) data Global Potential Evapotranspiration (PET) data         Current Browse Graphics Seasonal NDVI & Rainfall Charts                  --For more info see the readme.               FEWS NET NDVI originates from the NASA GIMMS group. For proper acknowledgement of these data in any report or publication, the following references should be cited. For more information please see readme. Tucker, C. J., et al. (2005). "An Extended AVHRR 8-km NDVI Data Set Compatible with MODIS and SPOT Vegetation NDVI Data." International Journal of Remote Sensing, in press. Pinzon, J., et al. (2004). Satellite time series correction of orbital drift artifacts using empirical mode decomposition. Hilbert-Huang Transform: Introduction and Applications. N. Huang: Chapter 10, Part II. Applications. USGS Privacy Policy and Disclaimers || USGS Accessibility || Disclaimer || FOIA Funding: U.S. Agency for International Development Production & Maintenance: U.S. Geological Survey USGS Contacts: Website issues | Data & Science support                FEWS NET Regions: Early Warning Home | Afghanistan | Central America | Haiti                           FEWS NET Home