Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031218 |
Impact of Distinct Origin Locations on the Life Cycles of Landfalling Atmospheric Rivers Over the US West Coast | |
Zhou, Yang1; Kim, Hyemi2 | |
2019-11-24 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:22页码:11897-11909 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | An atmospheric river (AR) event represents strong poleward moisture transport and is defined as a series of spatiotemporally connected instantaneous AR objects. Utilizing an AR tracking algorithm with a depth-first search (a widely used algorithm in computer science), we examine the life cycle characteristics of AR events that make landfall over the U.S. West Coast by their distinct origin locations. Landfalling AR events from the Northwest Pacific (120 degrees E-170 degrees W, WLAR events) temporally last longer (5.3 versus 3.6 days on average) and have stronger intensity of integrated vapor transport (508 versus 388 kg m(-1) s(-1) on average) than those originating from the Northeast Pacific (125 degrees W-170 degrees W, ELAR events). A persistent tripole geopotential height anomaly pattern over the North Pacific modulates the origin locations and propagation of landfalling AR events. WLAR events are associated with anomalous highs over northeastern Asia and the Northeast Pacific and an anomalous low over the central North Pacific. This pattern provides favorable conditions for WLAR events to start, propagate northeastward, and make landfall in the northwestern West Coast. WLAR events contribute approximately 25% of the total winter precipitation over Washington and British Columbia. ELAR events are associated with a similar tripole pattern to the WLAR events with an eastward shift. The anomalous low over the Northeast Pacific helps ELAR events to start, propagate northeastward, and make landfall in the southwestern West Coast. Precipitation induced by ELAR events contributes up to 30% of total winter precipitation over California. |
英文关键词 | Atmospheric River Landfalling US West Coast |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498515000001 |
WOS关键词 | COLD-SEASON PRECIPITATION ; EXTREME PRECIPITATION ; INLAND PENETRATION ; CLIMATE-CHANGE ; NORTH-AMERICA ; UNITED-STATES ; WATER-VAPOR ; PREDICTION ; SCALE ; CALIFORNIA |
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/225804 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Lawrence Berkeley Natl Lab, Berkeley, CA USA; 2.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA |
推荐引用方式 GB/T 7714 | Zhou, Yang,Kim, Hyemi. Impact of Distinct Origin Locations on the Life Cycles of Landfalling Atmospheric Rivers Over the US West Coast[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(22):11897-11909. |
APA | Zhou, Yang,&Kim, Hyemi.(2019).Impact of Distinct Origin Locations on the Life Cycles of Landfalling Atmospheric Rivers Over the US West Coast.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(22),11897-11909. |
MLA | Zhou, Yang,et al."Impact of Distinct Origin Locations on the Life Cycles of Landfalling Atmospheric Rivers Over the US West Coast".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.22(2019):11897-11909. |
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