Climate Change Analysis on Extreme Precipitation over Three Watersheds in Northern California Based on 137-Year Long-Term Dynamical Downscaling

被引：0
|
作者：
Ishida, K. [1 ]
Kavvas, M. L. [1 ]
Ceyhan, S. [1 ]
Ohara, N. [2 ]
Chen, Z. Q. [3 ]
机构：
[1] Univ Calif Davis, Dept Civil & Environm Engn, Hydrol Res Lab, Davis, CA 95616 USA
[2] Univ Wyoming, Dept Civil & Architectural Engn, Laramie, WY 82071 USA
[3] Calif Dept Water Resources, Bay Delta Off, Washington, DC USA
来源：
WORLD ENVIRONMENTAL AND WATER RESOURCES CONGRESS 2015: FLOODS, DROUGHTS, AND ECOSYSTEMS | 2015年
关键词：
D O I：
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中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Long-term historical precipitation over Northern California was reconstructed for 137 water years from October, 1871 through September, 2008 by dynamical downscaling based on NOAA Twentieth Century Reanalysis version 2 (20CRv2). The annual maximum values of 6-, 12-, 24-, 48-, 72-, and 96-hour basin-average precipitation were obtained from the reconstructed results for three watersheds in Northern California; American River watershed, Yuba River watershed, and Upper Feather River watershed. The reconstructed results for 137 water years are long enough to conduct a moving window analysis. Then, the moving average of annual maximum basin-average precipitation for each duration is calculated based on a 50-year moving window to analyze the trend of annual maximum values of basin-average precipitation. The analysis shows a clear upward trend for the 50-year moving average over all the three watersheds.
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页码：983 / 988
页数：6
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