DOI: 10.1038/ngeo2203
论文题名: River basin flood potential inferred using GRACE gravity observations at several months lead time
作者: Reager J.T. ; Thomas B.F. ; Famiglietti J.S.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期: 8 起始页码: 588
结束页码: 592
语种: 英语
英文摘要: The wetness of a watershed determines its response to precipitation, leading to variability in flood generation. The importance of total water storage - which includes snow, surface water, soil moisture and groundwater - for the predisposition of a region to flooding is less clear, in part because such comprehensive observations are rarely available. Here we demonstrate that basin-scale estimates of water storage derived from satellite observations of time-variable gravity can be used to characterize regional flood potential and may ultimately result in longer lead times in flood warnings. We use a case study of the catastrophic 2011 Missouri River floods to establish a relationship between river discharge, as measured by gauge stations, and basin-wide water storage, as measured remotely by NASA's Gravity Recovery and Climate Experiment (GRACE) mission. Applying a time-lagged autoregressive model of river discharge, we show that the inclusion of GRACE-based total water storage information allows us to assess the predisposition of a river basin to flooding as much as 5-11 months in advance. Additional case studies of flood events in the Columbia River and Indus River basins further illustrate that longer lead-time flood prediction requires accurate information on the complete hydrologic state of a river basin. © 2014 Macmillan Publishers Limited. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106497
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: UC Center for Hydrologic Modeling, University of California, Irvine, CA 92697, United States; Department of Earth System Science, University of California, Irvine, CA 92697, United States; Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697, United States
Recommended Citation:
Reager J.T.,Thomas B.F.,Famiglietti J.S.. River basin flood potential inferred using GRACE gravity observations at several months lead time[J]. Nature Geoscience,2014-01-01,7(8)