Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029934 |
Sensitivity of Atmospheric Rivers to Damping of Midlatitude Subseasonal Variability | |
Swenson, Erik T.1; Stan, Cristiana2 | |
2019-09-10 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | We examine how atmospheric rivers (ARs) over the North Pacific basin respond to relaxation in midlatitudes in sets of reforecasts made with the Community Atmosphere Model using superparameterized convection. The study focuses on January-March 2015 with weekly staggered initial conditions and sea surface temperature prescribed. In one set of reforecasts, zonal and meridional winds, temperature, and specific humidity are relaxed within the midlatitude band 40-70 degrees N and compared with a control set of reforecasts made without relaxation. Meteorological parameters are relaxed to the smooth seasonal evolution of the control simulations (the seasonal mean, trend, and parabolic fit), about which subseasonal deviations are damped. Relaxation has a systematic impact on the Pacific circulation and on different AR types. Damping subseasonal variability acts to anchor the West Pacific trough and deepen height anomalies at 40 degrees N, as well as modify the total number and duration of AR events. Although largely offset by changes in the number of events, individual AR events with moisture originating from midlatitudes tend to have shorter lifetimes, while AR events with moisture from the tropics tend to last longer. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000486893100001 |
WOS关键词 | NORTH PACIFIC ; WEST-COAST ; PRECIPITATION ; CYCLONES ; CONNECTION ; SATELLITE ; AIRCRAFT ; WINTER |
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/186985 |
专题 | 气候变化 |
作者单位 | 1.George Mason Univ, Ctr Ocean Land Atmosphere Studies, Fairfax, VA 22030 USA; 2.George Mason Univ, Coll Sci, Dept Atmospher Ocean & Earth Sci, Fairfax, VA 22030 USA |
推荐引用方式 GB/T 7714 | Swenson, Erik T.,Stan, Cristiana. Sensitivity of Atmospheric Rivers to Damping of Midlatitude Subseasonal Variability[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Swenson, Erik T.,&Stan, Cristiana.(2019).Sensitivity of Atmospheric Rivers to Damping of Midlatitude Subseasonal Variability.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Swenson, Erik T.,et al."Sensitivity of Atmospheric Rivers to Damping of Midlatitude Subseasonal Variability".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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