Simulating hydrologic and hydraulic processes throughout the Amazon River Basin

Autor: V. Gummadi, Thomas Dunne, Kristine L. Verdin, R. E. Beighley, K. G. Eggert, Y. He
Rok vydání: 2009
Předmět:
Zdroj: Hydrological Processes. 23:1221-1235
ISSN: 1099-1085
0885-6087
DOI: 10.1002/hyp.7252
Popis: Presented here is a model framework based on a land surface topography that can be represented with various degrees of resolution and capable of providing representative channel/floodplain hydraulic characteristics on a daily to hourly scale. The framework integrates two models: (1) a water balance model (WBM) for the vertical fluxes and stores of water in and through the canopy and soil layers based on the conservation of mass and energy, and (2) a routing model for the horizontal routing of surface and subsurface runoff and channel and floodplain waters based on kinematic and diffusion wave methodologies. The WBM is driven by satellite-derived precipitation (TRMM 3B42) and air temperature (MOD08 M3). The model’s use of an irregular computational grid is intended to facilitate parallel processing for applications to continental and global scales. Results are presented for the Amazon Basin over the period Jan 2001 through Dec 2005. The model is shown to capture annual runoff totals, annual peaks, seasonal patterns, and daily fluctuations over a range of spatial scales (>1, 000 to
Databáze: OpenAIRE
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