About this app

The Ag Geospatial Data Explorer is developed by the University of Washington's Center on Risk and Inclusion in Food Systems (CRIFS) at the Evans School Policy Analysis and Research Group (EPAR). The platform is designed to provide an easy-to-use interface for generating and visualizing key agricultural, geospatial, and climate indicators across various subnational regions and temporal scales for selected South Asian and sub-Saharan African countries. It is built on top of various public large-scale gridded climate and land use datasets.

EPAR will continue to expand the platform by incorporating additional indicators, geographies, and analytical features over time. We welcome feedback and suggestions to help improve and enhance the Geospatial Data Explorer.

How do I use this tool?

1. Select country, layer, statistics, and time period of interest in the left sidebar

2. Choose between Map or Time Series chart type

3. Configure regional and display options and click Generate

4. Hover over charts to see the interactive toolbar for downloading as PNG, zooming and more

5. Download chart data using the buttons on the right

Indicators and definitions

Currently available

Rainfall — Built from CHIRPS (Funk et al., 2015)

• Total rainfall

• Count of days with <1mm rainfall

Maximum temperature (TX) — Built from CHIRTS-ERA5 (Funk et al., 2019)

• Count of days with TX >30°C

• Count of days with TX >35°C

• Count of days with TX >40°C

Agroecology — Built from GAEZ

• Agroecological zones

Potential indicator extensions (in progress)

• Standard Precipitation Index (SPI)

• Standard Precipitation and Evapotranspiration Index (SPEI)

• Palmer Drought Severity Index (PDSI)

• Rainfall anomalies (long-term z-scores)

• Maximum, minimum, and average surface temperature

• Temperature anomalies (long-term z-scores)

• Growing and harmful degree days

• Normalized Difference Vegetation Index (NDVI)

Citation

University of Washington, Evans Policy Research and Analysis (2025). Ag Geospatial Data Explorer: A platform for constructing and visualizing geospatial indicators for South Asian and sub-Saharan African countries. URL: agquery.org/aggeo

Where can I learn more?

To learn about EPAR work on climate and risks in food systems, please visit epar.evans.uw.edu

How can I contact you for help?

We welcome feedback and questions. Please email us at uw.eparx@gmail.com

References

Funk, C., Peterson, P., Landsfeld, M. et al. (2015). The climate hazards infrared precipitation with stations — a new environmental record for monitoring extremes. Scientific Data, 2, 150066. https://doi.org/10.1038/sdata.2015.66

Funk, C., Peterson, P., Peterson, S. et al. (2019). A high-resolution 1983–2016 T_max climate data record based on infrared temperatures and stations for the Middle East and North Africa. Scientific Data, 6, 247. https://doi.org/10.1038/sdata.2019.263

For all CHC datasets, see: chc.ucsb.edu/data