GeoSpatial WRSI
What is GeoWRSI 
Outputs 
Related
Tools 
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What is GeoWRSI?
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. The program produces
a range of outputs which can either be used qualitatively
to help assess and monitor crop conditions during the crop
growing season, or can be regressed with yields to produce
yield estimation models and yield estimates. Other tools
are available to post-process the GeoWRSI outputs so that
they can be used in yield estimation models.
The program is currently in it’s Beta version and
is being tested. If you would like to download and test the
program, please send any bugs you find to chris@geog.ucsb.edu

Program Outputs
- WRSI Map
- WRSI Anomaly Map
- Start of Season Map
- Total Actual Evapotranspiration at different stages
of crop growth
- Total Water Deficit at different stages of crop growth
- Total Water Requirement at different stages of crop
growth
- Total Surplus Water at different stages of crop growth
- Maximum Water Deficit experienced in any one dekad
- Maximum Surplus Water experienced in any one dekad

Related tools
Water
Balance Post Processor
Download
GeoWRSI
installation file
Rainfall and evapotranspiration data are updated regularly
at:
GeoWRSI
data archives

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