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INCREASING CROP WATER USE EFFICIENCY AT MULTIPLE SCALES USING SENTINEL EVAPOTRANSPIRATION (ET4FAO)

DHI GRAS A/S (DK)

Summary

The ET4FAO project demonstrated the suitability of Copernicus data (Sentinel-2, Sentinel-3 and ERA-5) for accurate and consistent country-wide mapping of actual evapotranspiration (ET) at spatial resolutions ranging from 20 m to 300 m. This was achieved through production of ET maps covering the whole of Tunisia and Lebanon for the year 2019. Validation across 6 field sites located in irrigated and rainfed agriculture resulted in mean bias of 0.3 mm/day. Food and Agriculture Organization (FAO) were engaged throughout the project as the product aligns with their long-term goals of providing earth-observation data for monitoring of Sustainable Development Goal 6 (Clean Water and Sanitation).

https://www.mdpi.com/2072-4292/12/9/1433 – Paper from ESA Sen-ET project (precursor to ET4FAO) which describes the main methodology used in ET4FAO.

All the Copernicus-based ET maps produced during the project for Lebanon and Tunisia are available from the project website. Clicking the (i) icon on the right panel opens a tab with description of the project and the products.

Graphics

Evapotranspiration map of irrigated agriculture in Lebanon’s Bekaa valley in July 2019

 

Evapotranspiration map of whole of Lebanon in July 2019

 

Evapotranspiration map of irrigated agriculture in the desert of Tunisia in July 2019

Information

Website
https://et4fao.dhigroup.com/#/
Domain
Sustainable Development
Prime contractor
DHI GRAS A/S (DK)
Subcontractors
  • Complutum Tecnologias de la Informa (ES)