Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin

Freshwater is considered an essential natural resource that must be monitored effectively. The Surface Water and Ocean Topography (SWOT) satellite mission scheduled for launch in December 2022 will enable river discharge estimation from surface water extents, elevations, and slopes. However, the SWO...

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Main Authors: Kaushlendra Verma, Indu J.
Format: Article
Language:English
Published: Taylor & Francis Group 2023-12-01
Series:Geocarto International
Subjects:
Online Access:http://dx.doi.org/10.1080/10106049.2023.2185292
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author Kaushlendra Verma
Indu J.
author_facet Kaushlendra Verma
Indu J.
author_sort Kaushlendra Verma
collection DOAJ
description Freshwater is considered an essential natural resource that must be monitored effectively. The Surface Water and Ocean Topography (SWOT) satellite mission scheduled for launch in December 2022 will enable river discharge estimation from surface water extents, elevations, and slopes. However, the SWOT-based discharges will be inconsistent due to infrequent temporal sampling (TS) of SWOT orbit. This study explores the potential of unique TS of SWOT to determine whether it influences the calibration of hydrological model. The Weather Research and Forecast Hydrological system (WRF-Hydro) has been used to simulate river discharge. Further WRF-Hydro model has been calibrated using proxy SWOT data based on a dynamically dimensioned search algorithm. Results show that more than 90% of parameter iterations have KGE values with less than 20% absolute percent difference when only SWOT TS alone has been considered. The results suggest that model calibration using SWOT-based discharge performs similarly to daily in-situ discharge.
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spelling doaj.art-2efcddcd990c43538e4c5b824d196b922023-09-19T09:13:17ZengTaylor & Francis GroupGeocarto International1010-60491752-07622023-12-0138110.1080/10106049.2023.21852922185292Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basinKaushlendra Verma0Indu J.1Department of Civil Engineering, Indian Institute of TechnologyDepartment of Civil Engineering, Indian Institute of TechnologyFreshwater is considered an essential natural resource that must be monitored effectively. The Surface Water and Ocean Topography (SWOT) satellite mission scheduled for launch in December 2022 will enable river discharge estimation from surface water extents, elevations, and slopes. However, the SWOT-based discharges will be inconsistent due to infrequent temporal sampling (TS) of SWOT orbit. This study explores the potential of unique TS of SWOT to determine whether it influences the calibration of hydrological model. The Weather Research and Forecast Hydrological system (WRF-Hydro) has been used to simulate river discharge. Further WRF-Hydro model has been calibrated using proxy SWOT data based on a dynamically dimensioned search algorithm. Results show that more than 90% of parameter iterations have KGE values with less than 20% absolute percent difference when only SWOT TS alone has been considered. The results suggest that model calibration using SWOT-based discharge performs similarly to daily in-situ discharge.http://dx.doi.org/10.1080/10106049.2023.2185292satellite altimetrysurface water and ocean topography (swot)wrf-hydrotemporal samplingcalibration
spellingShingle Kaushlendra Verma
Indu J.
Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin
Geocarto International
satellite altimetry
surface water and ocean topography (swot)
wrf-hydro
temporal sampling
calibration
title Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin
title_full Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin
title_fullStr Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin
title_full_unstemmed Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin
title_short Applicability of SWOT data in calibrating WRF-Hydro hydrological model over the Tawa River basin
title_sort applicability of swot data in calibrating wrf hydro hydrological model over the tawa river basin
topic satellite altimetry
surface water and ocean topography (swot)
wrf-hydro
temporal sampling
calibration
url http://dx.doi.org/10.1080/10106049.2023.2185292
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