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Proceedings Paper

A virtual mission to estimate discharge using assimilation of high-resolution simulated SWOT Data: initial results over the Ohio river
Author(s): Delwyn Moller; Kostantinos Andreadis; Ernesto Rodriguez; Xiaoqing Wu; Douglas Alsdorf
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Paper Abstract

In this paper we present a framework for a virtual mission (VM) that 1) models the basin-wide physical and hydraulic processes of a chosen study region, namely the Ohio river basin, 2) samples those processes with a high fidelity SWOT simulation to deliver realistic high-resolution temporally subsampled, spatially dense interferograms, 3) reconstructs the water surface elevation from the synthetic interferometric measurement. This is part of an ongoing effort where the elevation measurements, as during the SWOT mission, will be integrated into a data assimilation framework to estimate discharge. We present results from the key elements of the VM Ohio basin configuration including the study region extent and hydrodynamics model setup. Furthermore, an example of georeferenced reconstructed heights derived from the SWOT instrument simulator over the Ohio modeled region is given. These results illustrate the effects of random (thermal and fading/speckle) noise of the height estimates as well as explicitly evaluating the effects of topographic layover. In the near future the hydrodynamic modeling and synthetic SWOT acquisitions over the region will be run for several "virtual" months to provide data to support the discharge estimation algorithm development in preparation for SWOT.

Paper Details

Date Published: 13 October 2010
PDF: 10 pages
Proc. SPIE 7826, Sensors, Systems, and Next-Generation Satellites XIV, 782617 (13 October 2010); doi: 10.1117/12.868979
Show Author Affiliations
Delwyn Moller, Remote Sensing Solutions, Inc. (United States)
Kostantinos Andreadis, Ohio State Univ. (United States)
Ernesto Rodriguez, Jet Propulsion Lab. (United States)
Xiaoqing Wu, Jet Propulsion Lab. (United States)
Douglas Alsdorf, Ohio State Univ. (United States)


Published in SPIE Proceedings Vol. 7826:
Sensors, Systems, and Next-Generation Satellites XIV
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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