Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017JD027899 |
Resolution Dependence and Rossby Wave Modulation of Atmospheric Rivers in an Aquaplanet Model | |
Swenson, Erik T.1; Lu, Jian2; Straus, David M.3 | |
2018-06-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:12页码:6297-6311 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Atmospheric rivers (ARs) are examined in a set of aquaplanet simulations using the Model for Prediction Across Scales dynamical core run at multiple horizontal resolutions, namely, 240, 120, and 60km. As the resolution is increased, there is an increase in the occurrence of long-lasting ARs. At the same time there is also an increase in the local finite-amplitude wave activity (LWA) of upper-tropospheric absolute vorticity, a measure for Rossby wave phase and amplitude that is closely linked with wave breaking. Consistent with the notion that changes in ARs are driven by midlatitude dynamics, a strong relationship is identified between ARs and the equatorward component of LWA. A logistic regression model is used to quantify the probability of AR occurrence based solely on LWA and explains most of the change in AR frequency with resolution. LWA is a diagnostic that may be easily applied to the broadly available output of phase 6 of the Coupled Model Intercomparison project and other model simulations, thus enabling scientists to infer AR and Rossby wave characteristics. AR characteristics, in particular, require higher-resolution moisture and winds at multiple levels that are not always easily available. |
英文关键词 | atmospheric rivers resolution Rossby waves |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000439508000001 |
WOS关键词 | WEST-COAST ; NORTH PACIFIC ; PRECIPITATION ; MOISTURE ; EVENTS ; WINTER ; SIMULATIONS ; REANALYSIS ; CONNECTION ; MULTIMODEL |
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/34091 |
专题 | 气候变化 |
作者单位 | 1.George Mason Univ, Ctr Ocean Land Atmosphere Studies, Fairfax, VA 22030 USA; 2.Pacific Northwest Natl Lab, Richland, WA 99352 USA; 3.George Mason Univ, Coll Sci, Dept Atmospher Ocean & Space Sci, Fairfax, VA 22030 USA |
推荐引用方式 GB/T 7714 | Swenson, Erik T.,Lu, Jian,Straus, David M.. Resolution Dependence and Rossby Wave Modulation of Atmospheric Rivers in an Aquaplanet Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(12):6297-6311. |
APA | Swenson, Erik T.,Lu, Jian,&Straus, David M..(2018).Resolution Dependence and Rossby Wave Modulation of Atmospheric Rivers in an Aquaplanet Model.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(12),6297-6311. |
MLA | Swenson, Erik T.,et al."Resolution Dependence and Rossby Wave Modulation of Atmospheric Rivers in an Aquaplanet Model".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.12(2018):6297-6311. |
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