气候变化领域集成服务门户(CCPortal): Modeling river discharge rates in California watersheds

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DOI	10.2166/wcc.2010.012
	Modeling river discharge rates in California watersheds
	Potter C.; Shupe J.; Gross P.; Genovese V.; Klooster S.
发表日期	2010
ISSN	20402244
起始页码	36
结束页码	54
卷号	1 期号:1
英文摘要	River discharge rates across all California's watershed have been modeled using the NASA version of the Carnegie-Ames-Stanford Approach (CASA) ecosystem model coupled with a surface hydrologic routing scheme previously called the Hydrological Routing Algorithm (HYDRA). To assess CASA-HYDRA's capability to estimate actual water flows in extreme and non-extreme precipitation years, we have organized hundreds of California river gauge records for comparison to monthly model predictions. Previously, CASA-HYDRA snowmelt algorithms were modified with equations from the USDA Snowmelt Runoff Model, which has been designed to predict daily stream flow in mountain basins where snowmelt is a major runoff factor. Based on model predictions of monthly flow rates across 336 stream gauges statewide, the multi-year model-to-measurement correlation between monthly river flow rates was R 2 = 0.72. The model output was 15% higher across all these stream gauges than the measured monthly flow records for 1982-1990. It is plausible that the model would predict higher flow rates statewide than was measured at many gauge locations, due mainly to extensive water diversions for power generation and crop irrigation in the valley growing regions of the state. Predictions for gauges located on the state's North Coast and Sierra regions showed errors distributed fairly evenly throughout the seasons, whereas results for Central Coast and Southern regions showed higher errors mainly during the summer and fall. Future model applications for land cover and climate change in California are outlined. © US Government - NASA 2010.
英文关键词	Forests; Irrigation; Rangelands; Water allocation; Water supply; Watershed management
语种	英语
scopus关键词	Carnegie-ames-stanford approach (CASA); Forests; Rangelands; River discharge rate; Snowmelt runoff model; Water allocations; Water diversions; Watershed management; Climate change; Errors; Flood control; Forecasting; Gages; Irrigation; Landforms; NASA; Precipitation (meteorology); Runoff; Snow melting systems; Soil conservation; Stream flow; Water conservation; Water management; Water supply; Flow rate
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148376
作者单位	NASA Ames Research Center, Moffett Field, CA, United States; California State University Monterey Bay, Seaside, CA, United States
推荐引用方式 GB/T 7714	Potter C.,Shupe J.,Gross P.,et al. Modeling river discharge rates in California watersheds[J],2010,1(1).
APA	Potter C.,Shupe J.,Gross P.,Genovese V.,&Klooster S..(2010).Modeling river discharge rates in California watersheds.Journal of Water and Climate Change,1(1).
MLA	Potter C.,et al."Modeling river discharge rates in California watersheds".Journal of Water and Climate Change 1.1(2010).