High-Resolution Spatiotemporal Trend Analysis of Precipitation Using Satellite-Based Products over the United Arab Emirates

Current water demands are adequately satisfied in the United Arab Emirates (UAE) with available resources. However, changing climate and growing demand pose a great challenge for resources managers country. Hence, there is need management strategies policies to use most accurate information regarding availability. Understanding frequency short- long-term trends of precipitation by employing high-resolution data both spatial temporal domains can provide invaluable information. This study examines over UAE using 17 years from three highly cited satellite-based products rain gauge observed at 18 stations. The received, on average, 42, 51, 120 wet hours year 21st century as recorded CMORPH, PERSIANN, IMERG, respectively. results show that areal average annual significantly lower early than late 20th century, even though it shows an increasing trend all products. Mann–Kendall test showed positive six stations negative two out stations, which located wetter eastern part UAE. Results indicate satellite have potential improving aspects rainfall analysis complement develop intensity–duration–frequency curves very dry region, where installation dense networks not feasible.