Abstract
Abstract. Irrigation is the main driver of crop production in many agricultural regions across the world. The estimation of irrigation water has the potential to enhance our comprehension of the Earth system, thus providing crucial data for food production. In this study, we have created a unique operational system for estimating irrigation water using data from satellite soil moisture, reanalysis precipitation, and potential evaporation. As a proof of concept, we implemented the method at a high resolution (1 km) during the period of 2015–2023 over the area south of the Kakhovka Dam in Ukraine, which collapsed on 6 June 2023. The selected study area enabled us to showcase that our operational system is able to track the effect of the pandemic and conflict on the irrigation water supply. Significant decreases of 63 % and 44 % in irrigation water compared to the mean irrigation water between 2015 and 2023 have been identified as being linked to the collapse of the dam and, potentially, to the COVID-19 pandemic, respectively.
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