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DOI | 10.1175/JAS-D-19-0098.1 |
Influence of Swell on Marine Surface-Layer Structure | |
Jiang, Qingfang | |
2020-05-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2020 |
卷号 | 77期号:5页码:1865-1885 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The influence of swell on turbulence and scalar profiles in a marine surface layer and underlying physics is examined in this study through diagnosis of large-eddy simulations (LES) that explicitly resolve the surface layer and underlying swell. In general, under stable conditions, the mean wind and scalar profiles can be significantly modified by swell. The influence of swell on wind shear, turbulence structure, scalar profiles, and evaporation duct (ED) characteristics becomes less pronounced in a more convective boundary layer, where the buoyancy production of turbulence is significant. Dynamically, swell has little direct impact on scalar profiles. Instead it modifies the vertical wind shear by exerting pressure drag on the wave boundary layer. The resulting redistribution of vertical wind shear leads to changes in turbulence production and therefore turbulence mixing of scalars. Over swell, the eddy diffusivities from LES systematically deviate from the Monin-Obukhov similarity theory (MOST) prediction, implying that MOST becomes invalid over a swell-dominated sea. The deviations from MOST are more pronounced in a neutral or stable boundary layer under relatively low winds and less so in a convective boundary layer. |
英文关键词 | Atmosphere Coastal flows Boundary layer Air-sea interaction Atmosphere-ocean interaction Large eddy simulations |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000535703800018 |
WOS关键词 | LARGE-EDDY SIMULATIONS ; PLANETARY BOUNDARY-LAYER ; WIND ; MODEL ; FLUX |
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/280347 |
专题 | 地球科学 |
作者单位 | Naval Res Lab, Monterey, CA 93943 USA |
推荐引用方式 GB/T 7714 | Jiang, Qingfang. Influence of Swell on Marine Surface-Layer Structure[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2020,77(5):1865-1885. |
APA | Jiang, Qingfang.(2020).Influence of Swell on Marine Surface-Layer Structure.JOURNAL OF THE ATMOSPHERIC SCIENCES,77(5),1865-1885. |
MLA | Jiang, Qingfang."Influence of Swell on Marine Surface-Layer Structure".JOURNAL OF THE ATMOSPHERIC SCIENCES 77.5(2020):1865-1885. |
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