Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0334.1 |
The Transition from Downward to Upward Air-Sea Momentum Flux in Swell-Dominated Light Wind Conditions | |
Hogstrom, Ulf1; Sahlee, Erik1; Smedman, Ann-Sofi1; Rutgersson, Anna1; Nilsson, Erik1; Kahma, Kimmo K.2; Drennan, William M.3 | |
2018-08-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:8页码:2579-2588 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; Finland; USA |
英文摘要 | Fifteen hours of consecutive swell data from the experiment Flux, Etat de la Mer, et Teledetection en Condition de Fetch Variable (FETCH) in the Mediterranean show a distinct upward momentum flux. The characteristics are shown to vary systematically with wind speed. A hysteresis effect is found for wave energy of the wind-sea waves when represented as a function of wind speed, displaying higher energy during decaying winds compared to increasing winds. For the FETCH measurements, the upward momentum transfer regime is found to begin for wind speeds lower than about U = 4 m s(-1). For the lowest observed wind speeds U < 2.4 m s(-1), the water surface appears to be close to dynamically smooth. In this range almost all the upward momentum flux is accomplished by the peak in the cospectrum between the vertical and horizontal components of the wind velocity. It is demonstrated that this contribution in turn is linearly related to the swell significant wave height H-sd in the range 0.6 < H-sd < 1.4 m. For H-sd < 0.6 m, the contribution is zero in the present dataset but may depend on the swell magnitude in other situations. It is speculated that the observed upward momentum flux in the smooth regime, which is so strongly related to the cospectral peak at the dominant swell frequency, might be caused by the recirculation mechanism found by Wen and Mobbs in their numerical simulation of laminar flow of a nonlinear progressive wave at low wind speed. |
英文关键词 | Air-sea interaction Atmosphere-ocean interaction Momentum |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438489200006 |
WOS关键词 | ATMOSPHERIC BOUNDARY-LAYER ; WAVE ; STRESS ; GROWTH ; SIMULATIONS ; ENERGY |
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/29648 |
专题 | 地球科学 |
作者单位 | 1.Uppsala Univ, Dept Earth Sci, Meteorol, Uppsala, Sweden; 2.Finnish Meteorol Inst, Helsinki, Finland; 3.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA |
推荐引用方式 GB/T 7714 | Hogstrom, Ulf,Sahlee, Erik,Smedman, Ann-Sofi,et al. The Transition from Downward to Upward Air-Sea Momentum Flux in Swell-Dominated Light Wind Conditions[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(8):2579-2588. |
APA | Hogstrom, Ulf.,Sahlee, Erik.,Smedman, Ann-Sofi.,Rutgersson, Anna.,Nilsson, Erik.,...&Drennan, William M..(2018).The Transition from Downward to Upward Air-Sea Momentum Flux in Swell-Dominated Light Wind Conditions.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(8),2579-2588. |
MLA | Hogstrom, Ulf,et al."The Transition from Downward to Upward Air-Sea Momentum Flux in Swell-Dominated Light Wind Conditions".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.8(2018):2579-2588. |
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