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Title (Primary) Comparative analysis of TMPA and IMERG precipitation datasets in the arid environment of El-Qaa Plain, Sinai
Author Morsy, M.; Scholten, T.; Michaelides, S.; Borg, E.; Sherief, Y.; Dietrich, P.;
Journal Remote Sensing
Year 2021
Department MET;
Volume 13
Issue 4
Language englisch;
Supplements https://www.mdpi.com/2072-4292/13/4/588/s1
Keywords precipitation; TRMM; GPM; stressed aquifers; arid areas; Sinai
Abstract

The replenishment of aquifers depends mainly on precipitation rates, which is of vital importance for determining water budgets in arid and semi-arid regions. El-Qaa Plain in the Sinai Peninsula is a region that experiences constant population growth. This study compares the performance of two sets of satellite-based data of precipitation and in situ rainfall measurements. The dates selected refer to rainfall events between 2015 and 2018. For this purpose, 0.1° and 0.25° spatial resolution TMPA (Tropical Rainfall Measurement Mission Multi-satellite Precipitation Analysis) and IMERG (Integrated Multi-satellite Retrievals for Global Precipitation Measurement) data were retrieved and analyzed, employing appropriate statistical metrics. The best-performing data set was determined as the data source capable to most accurately bridge gaps in the limited rain gauge records, embracing both frequent light-intensity rain events and more rare heavy-intensity events. With light-intensity events, the corresponding satellite-based data sets differ the least and correlate more, while the greatest differences and weakest correlations are noted for the heavy-intensity events. The satellite-based records best match those of the rain gauges during light-intensity events, when compared to the heaviest ones. IMERG data exhibit a superior performance than TMPA in all rainfall intensities. 

ID 24274
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24274
Morsy, M., Scholten, T., Michaelides, S., Borg, E., Sherief, Y., Dietrich, P. (2021):
Comparative analysis of TMPA and IMERG precipitation datasets in the arid environment of El-Qaa Plain, Sinai
Remote Sens. 13 (4), art. 580