Daily GRACE gravity field solutions track major flood events in the Ganges–Brahmaputra Delta

Ben Gouweleeuw, Andreas Kvas, Christian Gruber, Animesh Gain, Torsten Mayer-Gürr, Frank Flechtner, Andreas Güntner

Research output: Contribution to journalArticle

Abstract

Two daily gravity field solutions based on observations from the Gravity Recovery and Climate Experiment (GRACE) satellite mission are evaluated against daily river runoff data for major flood events in the Ganges–Brahmaputra Delta (GBD) in 2004 and 2007. The trends over periods of a few days of the daily GRACE data reflect temporal variations in daily river runoff during major flood events. This is especially true for the larger flood in 2007, which featured two distinct periods of critical flood level exceedance in the Brahmaputra River. This first hydrological evaluation of daily GRACE gravity field solutions based on a Kalman filter approach confirms their potential for gravity-based large-scale flood monitoring. This particularly applies to short-lived, high-volume floods, as they occur in the GBD with a 4–5-year return period. The release of daily GRACE gravity field solutions in near-real time may enable flood monitoring for large events.
LanguageEnglish
Pages2867-2880
JournalHydrology and Earth System Sciences
Volume22
DOIs
StatusPublished - 9 May 2018

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GRACE
gravity field
river
runoff
satellite mission
return period
monitoring
Kalman filter
temporal variation
gravity

Keywords

  • GRACE
  • Floods
  • Ganges

Cite this

Daily GRACE gravity field solutions track major flood events in the Ganges–Brahmaputra Delta. / Gouweleeuw, Ben; Kvas, Andreas; Gruber, Christian; Gain, Animesh; Mayer-Gürr, Torsten; Flechtner, Frank; Güntner, Andreas.

In: Hydrology and Earth System Sciences, Vol. 22, 09.05.2018, p. 2867-2880.

Research output: Contribution to journalArticle

Gouweleeuw, Ben ; Kvas, Andreas ; Gruber, Christian ; Gain, Animesh ; Mayer-Gürr, Torsten ; Flechtner, Frank ; Güntner, Andreas. / Daily GRACE gravity field solutions track major flood events in the Ganges–Brahmaputra Delta. In: Hydrology and Earth System Sciences. 2018 ; Vol. 22. pp. 2867-2880
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