Analysis of the water level dynamics simulated by a global river model: A case study in the Amazon River

Water level dynamics in continental‐scale rivers is an important factor for surface water studies and flood hazard management. However, most continental‐scale river models have not focused on the reproduction of water level because the storage and movement of surface waters are regulated by smaller‐...

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Bibliographic Details
Published in:Water resources research 2012-09, Vol.48 (9), p.np-n/a
Main Authors: Yamazaki, Dai, Lee, Hyongki, Alsdorf, Douglas E., Dutra, Emanuel, Kim, Hyungjun, Kanae, Shinjiro, Oki, Taikan
Format: Article
Language:English
Subjects:
Accuracy
Altimetry
Amazon River
Case studies
Correlation coefficient
Flood hazards
Floodplains
Floods
Freshwater
global river model
Hydrodynamics
Marine
Neap tides
River mouth
Rivers
satellite altimeter
Surface water
tidal effect
Tidal effects
Tides
Topography
Water
Water levels
water surface elevation
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Summary:Water level dynamics in continental‐scale rivers is an important factor for surface water studies and flood hazard management. However, most continental‐scale river models have not focused on the reproduction of water level because the storage and movement of surface waters are regulated by smaller‐scale topography than their grid resolutions. Here we analyzed the water level dynamics simulated by a state‐of‐the‐art global river model, CaMa‐Flood, with subgrid representation of floodplain topography. As a case study, hydrodynamics simulation in the Amazon River was accomplished, and the simulated water surface elevations along the main stem were compared against Envisat altimetry. The seasonal cycles of the simulated water surface elevations are in agreement with the altimetry (correlation coefficient >0.69, annual amplitude error
ISSN:0043-1397
1944-7973
DOI:10.1029/2012WR011869