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Comparative analysis of TMPA and IMERG precipitation datasets in the arid environment of El- Qaa Plain, Sinai

Morsy, Mona Ahmad and Scholten, Thomas and Michaelides, Silas and Borg, Erik and Sherief, Youssef and Dietrich, Peter (2021) Comparative analysis of TMPA and IMERG precipitation datasets in the arid environment of El- Qaa Plain, Sinai. EGU General Assembly 2021, 19–30 Apr 2021, online. doi: 10.5194/egusphere-egu21-2705.

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Official URL: https://meetingorganizer.copernicus.org/EGU21/EGU21-2705.html

Abstract

The replenishment of aquifers depends mainly on precipitation rates, which is of vital 19 importance for determining water budgets in arid and semi-arid regions. El-Qaa Plain in Sinai 20 Peninsula is such a region which experiences a constant population growth. The local water budget 21 equilibrium is negatively affected by relatively frequent light rain events. This study compares the 22 performance of two sets of satellite-based data of precipitation and in situ rainfall measurements. The 23 dates selected refer to rainfall events between 2015 and 2018. For this purpose, 0.1° and 0.25° spatial 24 resolution TMPA (TRMM Multi-satellite Precipitation Analysis) and IMERG (Integrated Multi-25 satellitE Retrievals for GPM) data were retrieved and analyzed, employing appropriate statistical 26 metrics. The best-performing data set was determined as the data source capable to most accurately 27 bridge gaps in the limited rain gauge records, embracing both frequent light-intensity rain events 28 and rarer heavy-intensity events. With light-intensity events the corresponding satellite-based data 29 sets differ the least and correlate more, while the greatest differences and weakest correlations are 30 noted for the heavy intensity events. The satellite-based records best match those of the rain gauges 31 during light intensity events, when compared to the heaviest ones. IMERG data exhibit a superior 32 performance than TMPA, in all rainfall intensities.

Item URL in elib:https://elib.dlr.de/141940/
Document Type:Conference or Workshop Item (Speech)
Title:Comparative analysis of TMPA and IMERG precipitation datasets in the arid environment of El- Qaa Plain, Sinai
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Morsy, Mona AhmadMona Ahmad <monaahmad1985s (at) yahoo.com>https://orcid.org/0000-0003-2228-5476
Scholten, Thomasthomas.scholten (at) uni-tuebingen.dehttps://orcid.org/0000-0002-4875-2602
Michaelides, Silassilas.michaelides (at) cut.ac.cyhttps://orcid.org/0000-0002-3853-5065
Borg, ErikErik.Borg (at) dlr.dehttps://orcid.org/0000-0001-8288-8426
Sherief, Youssefsherief (at) squ.edu.omhttps://orcid.org/0000-0001-9626-4059
Dietrich, Peterpeter.dietrich (at) ufz.dehttps://orcid.org/0000-0003-2699-2354
Date:2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.5194/egusphere-egu21-2705
Status:Published
Keywords:remote sensing, precipitation, TRMM data, IMERG data, data quality
Event Title:EGU General Assembly 2021
Event Location:online
Event Type:international Conference
Event Dates:19–30 Apr 2021
Organizer:EGU General Assembly
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Remote Sensing and Geo Research
Location: Neustrelitz
Institutes and Institutions:German Remote Sensing Data Center > National Ground Segment
Deposited By: Borg, Dr.rer.nat. Erik
Deposited On:25 May 2021 10:15
Last Modified:25 May 2021 10:15

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