Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021899 |
How Does Snow Persistence Relate to Annual Streamflow in Mountain Watersheds of the Western US With Wet Maritime and Dry Continental Climates? | |
Hammond, John C.1; Saavedra, Freddy A.2,3; Kampf, Stephanie K.4 | |
2018-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:4页码:2605-2623 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Chile |
英文摘要 | With climate warming, many regions are experiencing changes in snow accumulation and persistence. These changes are known to affect streamflow volume, but the magnitude of the effect varies between regions. This research evaluates whether variables derived from remotely sensed snow cover can be used to estimate annual streamflow at the small watershed scale across the western U.S., a region with a wide range of climate types. We compared snow cover variables derived from MODIS, snow persistence (SP), and snow season (SS), to more commonly utilized metrics, snow fraction (fraction of precipitation falling as snow, SF), and peak snow water equivalent (SWE). Each variable represents different information about snow, and this comparison assesses similarities and differences between the snow metrics. Next, we evaluated how two snow variables, SP and SWE, related to annual streamflow (Q) for 119 USGS reference watersheds and examined whether these relationships varied for wet/warm (precipitation surplus) and dry/cold (precipitation deficit) watersheds. Results showed high correlations between all snow variables, but the slopes of these relationships differed between climates, with wet/warm watersheds displaying lower SF and higher SWE for the same SP. In dry/cold watersheds, both SP and SNODAS SWE correlated with Q spatially across all watersheds and over time within individual watersheds. We conclude that SP can be used to map spatial patterns of annual streamflow generation in dry/cold parts of the region. Applying this approach to the Upper Colorado River Basin demonstrates that 50% of streamflow comes from areas >3,000 masl. If the relationship between SP and Q is similar in other dry/cold regions, this approach could be used to estimate annual streamflow in ungauged basins. |
英文关键词 | streamflow snow persistence water yield climate change Colorado River Basin streamflow mapping |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434186400006 |
WOS关键词 | COLORADO RIVER-BASIN ; REMOTE-SENSING DATA ; UNITED-STATES ; SIERRA-NEVADA ; PRECIPITATION PHASE ; PACIFIC-NORTHWEST ; ROCKY-MOUNTAINS ; ENERGY-BALANCE ; CHANGE IMPACTS ; SATELLITE DATA |
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/21890 |
专题 | 资源环境科学 |
作者单位 | 1.Colorado State Univ, Dept Geosci, Ft Collins, CO 80523 USA; 2.Univ Playa Ancha, Dept Ciencias Geog, Playa Ancha, Chile; 3.Univ Playa Ancha, Ctr Estudios Avanzados, Vina Del Mar, Chile; 4.Colorado State Univ, Dept Ecosyst Sci & Sustainabil, Ft Collins, CO USA |
推荐引用方式 GB/T 7714 | Hammond, John C.,Saavedra, Freddy A.,Kampf, Stephanie K.. How Does Snow Persistence Relate to Annual Streamflow in Mountain Watersheds of the Western US With Wet Maritime and Dry Continental Climates?[J]. WATER RESOURCES RESEARCH,2018,54(4):2605-2623. |
APA | Hammond, John C.,Saavedra, Freddy A.,&Kampf, Stephanie K..(2018).How Does Snow Persistence Relate to Annual Streamflow in Mountain Watersheds of the Western US With Wet Maritime and Dry Continental Climates?.WATER RESOURCES RESEARCH,54(4),2605-2623. |
MLA | Hammond, John C.,et al."How Does Snow Persistence Relate to Annual Streamflow in Mountain Watersheds of the Western US With Wet Maritime and Dry Continental Climates?".WATER RESOURCES RESEARCH 54.4(2018):2605-2623. |
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