Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0365.1 |
Kelvin-Helmholtz Waves in Precipitating Midlatitude Cyclones | |
Barnes, Hannah C.1; Zagrodnik, Joseph P.2; McMurdie, Lynn A.2; Rowe, Angela K.2; Houze, Robert A., Jr.1,2 | |
2018-08-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:8页码:2763-2785 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study examines Kelvin-Helmholtz (KH) waves observed by dual-polarization radar in several precipitating midlatitude cyclones during the Olympic Mountains Experiment (OLYMPEX) field campaign along the windward side of the Olympic Mountains in Washington State and in a strong stationary frontal zone in Iowa during the Iowa Flood Studies (IFloodS) field campaign. While KH waves develop regardless of the presence or absence of mountainous terrain, this study indicates that the large-scale flow can be modified when encountering a mountain range in such a way as to promote development of KH waves on the windward side and to alter their physical structure (i.e., orientation and amplitude). OLYMPEX sampled numerous instances of KH waves in precipitating clouds, and this study examines their effects on microphysical processes above, near, and below the melting layer. The dual-polarization radar data indicate that KH waves above the melting layer promote aggregation. KH waves centered in the melting layer produce the most notable signatures in dual-polarization variables, with the patterns suggesting that the KH waves promote both riming and aggregation. Both above and near the melting layer ice particles show no preferred orientation likely because of tumbling in turbulent air motions. KH waves below the melting layer facilitate the generation of large drops via coalescence and/or vapor deposition, increasing mean drop size and rain rate by only slight amounts in the OLYMPEX storms. |
英文关键词 | Extratropical cyclones Precipitation Cloud microphysics Orographic effects Radars Radar observations Surface observations |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000439918500003 |
WOS关键词 | CLEAR-AIR TURBULENCE ; RADAR OBSERVATIONS ; ATMOSPHERIC RIVERS ; POLARIMETRIC RADAR ; BILLOWS ; INSTABILITY ; SIGNATURES ; MECHANISM ; AIRCRAFT ; EVENTS |
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/29560 |
专题 | 地球科学 |
作者单位 | 1.Pacific Northwest Natl Lab, Richland, WA 99352 USA; 2.Univ Washington, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Barnes, Hannah C.,Zagrodnik, Joseph P.,McMurdie, Lynn A.,et al. Kelvin-Helmholtz Waves in Precipitating Midlatitude Cyclones[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(8):2763-2785. |
APA | Barnes, Hannah C.,Zagrodnik, Joseph P.,McMurdie, Lynn A.,Rowe, Angela K.,&Houze, Robert A., Jr..(2018).Kelvin-Helmholtz Waves in Precipitating Midlatitude Cyclones.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(8),2763-2785. |
MLA | Barnes, Hannah C.,et al."Kelvin-Helmholtz Waves in Precipitating Midlatitude Cyclones".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.8(2018):2763-2785. |
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