Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0386.1 |
Linking Atmospheric River Hydrological Impacts on the US West Coast to Rossby Wave Breaking | |
Hu, Huancui1; Dominguez, Francina1; Wang, Zhuo1; Lavers, David A.2,3; Zhang, Gan1; Ralph, F. Martin2 | |
2017-05-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; England |
英文摘要 | Atmospheric rivers (ARs) have significant hydrometeorological impacts on the U.S. West Coast. This study presents the connection between the characteristics of large-scale Rossby wave breaking (RWB) over the eastern North Pacific and the regional-scale hydrological impacts associated with landfalling ARs on the U.S. West Coast (36 degrees-49 degrees N). ARs associated with RWB account for two-thirds of the landfalling AR events and >70% of total AR-precipitation in the winter season. The two regimes of RWB-anticyclonic wave breaking (AWB) and cyclonic wave breaking (CWB)-are associated with different directions of the vertically integrated water vapor transport (IVT). AWB-ARs impinge in a more westerly direction on the coast whereas CWB-ARs impinge in a more southwesterly direction. Most of the landfalling ARs along the northwestern coast of the United States (states of Washington and Oregon) are AWB-ARs. Because of their westerly impinging angles when compared to CWB-ARs, AWBARs arrive more orthogonally to the western Cascades and more efficiently transform water vapor into precipitation through orographic lift than CWB-ARs. Consequently, AWB-ARs are associated with the most extreme streamflows in the region. Along the southwest coast of the United States (California), the southwesterly impinging angles of CWBARs are more orthogonal to the local topography. Furthermore, the southwest coast CWB-ARs have more intense IVT. Consequently, CWB-ARs are associated with the most intense precipitation. As a result, most of the extreme streamflows in southwest coastal basins are associated with CWB-ARs. In summary, depending on the associated RWB type, ARs impinge on the local topography at a different angle and have a different spatial signature of precipitation and streamflow. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399680500018 |
WOS关键词 | UNITED-STATES ; MEAN CIRCULATION ; PRECIPITATION ; PACIFIC ; VARIABILITY ; CALIFORNIA ; ALGORITHM ; EVENTS ; RADAR |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/20975 |
专题 | 气候变化 |
作者单位 | 1.Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA; 2.Scripps Inst Oceanog, La Jolla, CA USA; 3.European Ctr Medium Range Weather Forecasts, Reading, Berks, England |
推荐引用方式 GB/T 7714 | Hu, Huancui,Dominguez, Francina,Wang, Zhuo,et al. Linking Atmospheric River Hydrological Impacts on the US West Coast to Rossby Wave Breaking[J]. JOURNAL OF CLIMATE,2017,30(9). |
APA | Hu, Huancui,Dominguez, Francina,Wang, Zhuo,Lavers, David A.,Zhang, Gan,&Ralph, F. Martin.(2017).Linking Atmospheric River Hydrological Impacts on the US West Coast to Rossby Wave Breaking.JOURNAL OF CLIMATE,30(9). |
MLA | Hu, Huancui,et al."Linking Atmospheric River Hydrological Impacts on the US West Coast to Rossby Wave Breaking".JOURNAL OF CLIMATE 30.9(2017). |
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