The version 4 SSEBop Evapotranspiration product incorporates dynamic, scene-specific c factor parameterization and improves the spatial accuracy of ET by sub-dividing and modeling each MODIS tile into 25 units. Furthermore, SSEBop v4 models every 1 km pixel of the landscape, including previously excluded low vegetation areas. In addition, we will provide map graphics and downloads of both actual ET data and anomalies.
Note: despite the improved accuracy, the ET product is still more reliable in a relative sense as in anomalies for drought monitoring purposes. The absolute accuracy can vary from region-to-region; thus, users are encouraged to evaluate and determine a one-time bias correction for water budget applications.
USGS FEWS NET Data Portal
The USGS FEWS NET Data Portal provides access to geo-spatial data, satellite image products, and derived data products in support of FEWS NET drought monitoring efforts throughout the world. This portal is provided by the USGS FEWS NET Project, part of the Early Warning Focus Area at the USGS Earth Resources Observation and Science (EROS) Center.
Data Portals
- Africa
- C.America/Caribbean/Mexico
- Central Asia
- Middle East
- South Asia
FEWS NET Software Tools
Interactive map viewers allow users to visualize administrative and crop zone time series of normalized difference vegetation index, dekadal (10-day) rainfall, and seasonal cumulative rainfall, including options for data download.
The Early Warning eXplorer (EWX) software is an interactive web-based mapping tool that allows users to visualize continental-scale rainfall estimate (RFE), land surface temperature (LST) and normalized difference vegetation index (NDVI) data and anomalies at varied time steps and review ...
The water point map viewer, which monitors 234 water points from Mali to Somalia, will help a range of government and non-government actors understand the current availability of water for livestock and human consumption. This will inform food security analysis, humanitarian assistance pl...
The GeoCLIM is a spatial analysis tool designed for climatological analysis of historical rainfall and temperature data. The GeoCLIM provides non-scientists with an array of accessible analysis tools for climate-smart agricultural development. These user friendly tools can be used to ob...
DSM (Drought Status Monitor) is an experimental decision support tool based on weather and crop conditions. It incorporates drought monitoring rules that distinguish severity and provide a generalized drought indicator at national and sub-national scales.
The GeoWRSI is a geo-spatial, stand-alone implementation of the Water Requirements Satisfaction Index (GeoWRSI), as it is implemented by the USGS for the FEWSNET Activity. The program runs a crop-specific water balance model for a selected region in the world, using raster data inputs. Th...