Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025571 |
Flood Size Increases Nonlinearly Across the Western United States in Response to Lower Snow-Precipitation Ratios | |
Davenport, Frances V.1; Herrera-Estrada, Julio E.1,2,3; Burke, Marshall1,4,5; Diffenbaugh, Noah S.1,6 | |
2020 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Many mountainous and high-latitude regions have experienced more precipitation as rain rather than snow due to warmer winter temperatures. Further decreases in the annual snow fraction are projected under continued global warming, with potential impacts on flood risk. Here, we quantify the size of streamflow peaks in response to both seasonal and event-specific rain-fraction using stream gage observations from watersheds across the western United States. Across the study watersheds, the largest rainfall-driven streamflow peaks are >2.5 times the size of the largest snowmelt-driven peaks. Using a panel regression analysis of individual precipitation and snowmelt events, we show that the empirical streamflow response grows approximately exponentially as the liquid precipitation input increases, with rain-dominated runoff leading to proportionately larger streamflow increases than snowmelt or mixed rain-and-snow runoff. We find that the response to changes in rain percentage is largest in the wettest watersheds, where wet antecedent conditions are important for increasing runoff efficiency. Similarly, the effect of rain percentage is larger across watersheds in the Northwest and West regions compared to watersheds in the Northern Rockies and Southwest regions. Overall, as a higher percentage of precipitation falls as rain, increases in the size of rainfall-driven and "rain-on-snow"-driven floods have the potential to more than offset decreases in the size of snowmelt-driven floods. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000520132500022 |
WOS关键词 | CLIMATE-DRIVEN VARIABILITY ; SIERRA-NEVADA ; PEAK FLOWS ; RUNOFF ; TRENDS ; RAINFALL ; STREAMFLOW ; IMPACTS ; SHIFTS ; MECHANISMS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280465 |
专题 | 资源环境科学 |
作者单位 | 1.Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA; 2.Stanford Univ, Program Water West, Stanford, CA 94305 USA; 3.Descartes Labs, New York, NY USA; 4.Stanford Univ, Ctr Food Secur & Environm, Stanford, CA 94305 USA; 5.Natl Bur Econ Res, Cambridge, MA 02138 USA; 6.Stanford Univ, Woods Inst Environm, Stanford, CA 94305 USA |
推荐引用方式 GB/T 7714 | Davenport, Frances V.,Herrera-Estrada, Julio E.,Burke, Marshall,et al. Flood Size Increases Nonlinearly Across the Western United States in Response to Lower Snow-Precipitation Ratios[J]. WATER RESOURCES RESEARCH,2020,56(1). |
APA | Davenport, Frances V.,Herrera-Estrada, Julio E.,Burke, Marshall,&Diffenbaugh, Noah S..(2020).Flood Size Increases Nonlinearly Across the Western United States in Response to Lower Snow-Precipitation Ratios.WATER RESOURCES RESEARCH,56(1). |
MLA | Davenport, Frances V.,et al."Flood Size Increases Nonlinearly Across the Western United States in Response to Lower Snow-Precipitation Ratios".WATER RESOURCES RESEARCH 56.1(2020). |
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