Evaluating water storage variations in the MENA region using GRACE satellite data

Handle URI:
http://hdl.handle.net/10754/620901
Title:
Evaluating water storage variations in the MENA region using GRACE satellite data
Authors:
Lopez, Oliver; Houborg, Rasmus; McCabe, Matthew ( 0000-0002-1279-5272 )
Abstract:
Terrestrial water storage (TWS) variations over large river basins can be derived from temporal gravity field variations observed by the Gravity Recovery and Climate Experiment (GRACE) satellites. These signals are useful for determining accurate estimates of water storage and fluxes over areas covering a minimum of 150,000 km2 (length scales of a few hundred kilometers) and thus prove to be a valuable tool for regional water resources management, particularly for areas with a lack of in-situ data availability or inconsistent monitoring, such as the Middle East and North Africa (MENA) region. This already stressed arid region is particularly vulnerable to climate change and overdraft of its non-renewable freshwater sources, and thus direction in managing its resources is a valuable aid. An inter-comparison of different GRACE-derived TWS products was done in order to provide a quantitative assessment on their uncertainty and their utility for diagnosing spatio-temporal variability in water storage over the MENA region. Different processing approaches for the inter-satellite tracking data from the GRACE mission have resulted in the development of TWS products, with resolutions in time from 10 days to 1 month and in space from 0.5 to 1 degree global gridded data, while some of them use input from land surface models in order to restore the original signal amplitudes. These processing differences and the difficulties in recovering the mass change signals over arid regions will be addressed. Output from the different products will be evaluated and compared over basins inside the MENA region, and compared to output from land surface models.
KAUST Department:
Water Desalination & Reuse Research Cntr
Conference/Event name:
American Geophysical Union Fall Meeting
Issue Date:
Dec-2013
Type:
Poster
Sponsors:
King Abdullah University of Science and Technology
Additional Links:
https://hydrology.kaust.edu.sa/Documents/H53G-1503.pdf; http://adsabs.harvard.edu/abs/2013AGUFM.H53G1503L
Appears in Collections:
Posters

Full metadata record

DC FieldValue Language
dc.contributor.authorLopez, Oliveren
dc.contributor.authorHouborg, Rasmusen
dc.contributor.authorMcCabe, Matthewen
dc.date.accessioned2016-10-09T09:25:37Z-
dc.date.available2016-10-09T09:25:37Z-
dc.date.issued2013-12-
dc.identifier.urihttp://hdl.handle.net/10754/620901-
dc.description.abstractTerrestrial water storage (TWS) variations over large river basins can be derived from temporal gravity field variations observed by the Gravity Recovery and Climate Experiment (GRACE) satellites. These signals are useful for determining accurate estimates of water storage and fluxes over areas covering a minimum of 150,000 km2 (length scales of a few hundred kilometers) and thus prove to be a valuable tool for regional water resources management, particularly for areas with a lack of in-situ data availability or inconsistent monitoring, such as the Middle East and North Africa (MENA) region. This already stressed arid region is particularly vulnerable to climate change and overdraft of its non-renewable freshwater sources, and thus direction in managing its resources is a valuable aid. An inter-comparison of different GRACE-derived TWS products was done in order to provide a quantitative assessment on their uncertainty and their utility for diagnosing spatio-temporal variability in water storage over the MENA region. Different processing approaches for the inter-satellite tracking data from the GRACE mission have resulted in the development of TWS products, with resolutions in time from 10 days to 1 month and in space from 0.5 to 1 degree global gridded data, while some of them use input from land surface models in order to restore the original signal amplitudes. These processing differences and the difficulties in recovering the mass change signals over arid regions will be addressed. Output from the different products will be evaluated and compared over basins inside the MENA region, and compared to output from land surface models.en
dc.description.sponsorshipKing Abdullah University of Science and Technologyen
dc.relation.urlhttps://hydrology.kaust.edu.sa/Documents/H53G-1503.pdfen
dc.relation.urlhttp://adsabs.harvard.edu/abs/2013AGUFM.H53G1503Len
dc.subjectwater storageen
dc.subjectGRACEen
dc.subjectMENAen
dc.titleEvaluating water storage variations in the MENA region using GRACE satellite dataen
dc.typePosteren
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.conference.date9-13 December 2013en
dc.conference.nameAmerican Geophysical Union Fall Meetingen
dc.conference.locationSan Franciscoen
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