Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-18-0204.1 |
Response of Surface Wind Divergence to Mesoscale SST Anomalies under Different Wind Conditions | |
Foussard, A.1,2; Lapeyre, G.1; Plougonven, R.1 | |
2019-07-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:7页码:2065-2082 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | The response of the atmospheric boundary layer to mesoscale sea surface temperature (SST) is often characterized by a link between wind stress divergence and downwind SST gradients. In this study, an idealized simulation representative of a storm track above a prescribed stationary SST field is examined in order to determine in which background wind conditions that relationship occurs. The SST field is composed of a midlatitude large-scale frontal zone and mesoscale SST anomalies. It is shown that the divergence of the surface wind can correlate either with the Laplacian of the atmospheric boundary layer temperature or with the downwind SST gradient. The first case corresponds to background situations of weak winds or of unstable boundary layers, and the response is in agreement with an Ekman balance adjustment in the boundary layer. The second case corresponds to background situations of stable boundary layers, and the response is in agreement with downward mixing of momentum. Concerning the divergence of the wind stress, it generally resembles downwind SST gradients for stable and unstable boundary layers, in agreement with past studies. For weak winds, a correlation with the temperature Laplacian is, however, found to some extent. In conclusion, our study reveals the importance of the large-scale wind conditions in modulating the surface atmospheric response with different responses in the divergences of surface wind and wind stress. |
英文关键词 | Atmosphere Atmosphere-ocean interaction Eddies Atmosphere-ocean interaction Boundary layer |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000472925100004 |
WOS关键词 | EASTERN EQUATORIAL PACIFIC ; STREAM CONVERGENCE ZONE ; LOW-LEVEL WINDS ; GULF-STREAM ; ATMOSPHERIC RESPONSE ; SOUTHERN-OCEAN ; TEMPERATURE ; LAYER ; CIRCULATION ; FRONTS |
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/184744 |
专题 | 地球科学 |
作者单位 | 1.Sorbonne Univ, Ecole Normale Super, Ecole Polytech, LMD IPSL,CNRS, Paris, France; 2.Ponts ParisTech, Champs Sur Marne, France |
推荐引用方式 GB/T 7714 | Foussard, A.,Lapeyre, G.,Plougonven, R.. Response of Surface Wind Divergence to Mesoscale SST Anomalies under Different Wind Conditions[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(7):2065-2082. |
APA | Foussard, A.,Lapeyre, G.,&Plougonven, R..(2019).Response of Surface Wind Divergence to Mesoscale SST Anomalies under Different Wind Conditions.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(7),2065-2082. |
MLA | Foussard, A.,et al."Response of Surface Wind Divergence to Mesoscale SST Anomalies under Different Wind Conditions".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.7(2019):2065-2082. |
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