Fusing Sentinel-3 and ECOSTRESS observations for a more accurate, high-resolution crop water stress indicator

Research output: Unpublished contribution to conferencePoster

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Climate change is already disrupting weather patterns across Africa, increasing the likelihood of droughts and shifting growing seasons in many parts of the continent. This is having a negative impact on domestic crop production. One way to offset these crop losses and improve food security is to expand efficiently managed irrigation where water is available.
Efficient irrigation is best achieved when farmers have accurate and up-to-date knowledge of the status of their crops. One way to gain this kind of knowledge, especially over large areas, is through the use of Earth Observation based information products. Within ARIES, we are developing high-resolution plant water and drought indicator products based on hyperspectral (PRISMA and EnMap) and thermal (Sentinel-3 and ECOSTRESS) data, exploring the future potential of these emerging data types. The product design process is being carried out in close collaboration with several African partners from southern, western and eastern Africa to ensure usefulness and applicability as well as knowledge and capacity transfer.
Plant Water, Leaf Area Index and Canopy Water have been selected as key information products to be derived from hyperspectral data. Soil moisture, evaporative stress, and scaled drought condition index are computed based on high resolution ECOSTRESS data. In addition, a 20m resolution crop water stress index has been derived based on the fusion of Sentinel-2, Sentinel-3 and ECOSTRESS data. During the symposium we would like to present our approach and results from our test sites in Zambia (managed by AKTC) and Mali (monitored by ACF), where our partners are providing information and knowledge on irrigated and rainfed fields. We will discuss the relevance not only of the results, but also of capacity building and the provision of open-source methods to allow anyone to independently calculate the above products for their area of interest.
Original languageEnglish
Publication statusPublished - 15 May 2024
EventEO for Agriculture Under Pressure 2024 - ESRIN, Frascati, Italy
Duration: 13 May 202416 May 2024


WorkshopEO for Agriculture Under Pressure 2024
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