40790
2016
2018
eng
21
postprint
1
2018-06-28
2018-06-28
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Water budget analysis within the surrounding of prominent lakes and reservoirs from multi-sensor earth observation data and hydrological models
The hydrological budget of a region is determined based on the horizontal and vertical water fluxes acting in both inward and outward directions. These integrated water fluxes vary, altering the total water storage and consequently the gravitational force of the region. The time-dependent gravitational field can be observed through the Gravity Recovery and Climate Experiment (GRACE) gravimetric satellite mission, provided that the mass variation is above the sensitivity of GRACE. This study evaluates mass changes in prominent reservoir regions through three independent approaches viz. fluxes, storages, and gravity, by combining remote sensing products, in-situ data and hydrological model outputs using WaterGAP Global Hydrological Model (WGHM) and Global Land Data Assimilation System (GLDAS). The results show that the dynamics revealed by the GRACE signal can be better explored by a hybrid method, which combines remote sensing-based reservoir volume estimates with hydrological model outputs, than by exclusive model-based storage estimates. For the given arid/ semi-arid regions, GLDAS based storage estimations perform better than WGHM.
remote sensing
case studies of the Aral Sea and Lake Mead
urn:nbn:de:kobv:517-opus4-407902
online registration
MDPI Remote sensing (2016) Vol. 8(11), Art. 953 ; DOI: 10.3390/rs8110953
CC-BY - Namensnennung 4.0 International
Alka Singh
Florian Seitz
Annette Eicker
Andreas Güntner
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
453
eng
uncontrolled
GRACE
eng
uncontrolled
water budget
eng
uncontrolled
reservoir
eng
uncontrolled
water fluxes
eng
uncontrolled
GLDAS
eng
uncontrolled
WGHM
eng
uncontrolled
Aral Sea
eng
uncontrolled
Lake Mead
Ingenieurwissenschaften
open_access
Mathematisch-Naturwissenschaftliche Fakultät
Institut für Geowissenschaften
Referiert
Open Access
Multidisciplinary Digital Publishing Institute (MDPI)
Institut für Erd- und Umweltwissenschaften
Universität Potsdam
https://publishup.uni-potsdam.de/files/40790/pmnr_453.online.pdf
44785
2016
2016
eng
21
8
article
MDPI
Basel
1
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Water Budget Analysis within the Surrounding of Prominent Lakes and Reservoirs from Multi-Sensor Earth Observation Data and Hydrological Models: Case Studies of the Aral Sea and Lake Mead
The hydrological budget of a region is determined based on the horizontal and vertical water fluxes acting in both inward and outward directions. These integrated water fluxes vary, altering the total water storage and consequently the gravitational force of the region. The time-dependent gravitational field can be observed through the Gravity Recovery and Climate Experiment (GRACE) gravimetric satellite mission, provided that the mass variation is above the sensitivity of GRACE. This study evaluates mass changes in prominent reservoir regions through three independent approaches viz. fluxes, storages, and gravity, by combining remote sensing products, in-situ data and hydrological model outputs using WaterGAP Global Hydrological Model (WGHM) and Global Land Data Assimilation System (GLDAS). The results show that the dynamics revealed by the GRACE signal can be better explored by a hybrid method, which combines remote sensing-based reservoir volume estimates with hydrological model outputs, than by exclusive model-based storage estimates. For the given arid/ semi-arid regions, GLDAS based storage estimations perform better than WGHM.
Remote sensing
10.3390/rs8110953
2072-4292
wos2016:2019
953
WOS:000388798400073
Singh, A (reprint author), Tech Univ Munich, DGFI, Arcisstr 21, D-80333 Munich, Germany., alka.singh@bv.tum.de; florian.seitz@tum.de; annette.eicker@hcu-hamburg.de; andreas.guentner@gfz-potsdam.de
German Research Foundation (DFG) through the project Clivar-Hydro of
importub
2020-03-22T13:05:01+00:00
filename=package.tar
51e71f9c636198f70fe464f0c1451630
Alka Singh
Florian Seitz
Annette Eicker
Andreas Güntner
eng
uncontrolled
GRACE
eng
uncontrolled
water budget
eng
uncontrolled
reservoir
eng
uncontrolled
water fluxes
eng
uncontrolled
GLDAS
eng
uncontrolled
WGHM
eng
uncontrolled
Aral Sea
eng
uncontrolled
Lake Mead
Institut für Geowissenschaften
Referiert
Institut für Erd- und Umweltwissenschaften
Import