globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027994
Scopus记录号: 2-s2.0-85047499775
论文题名:
The Role of Roughness and Stability on the Momentum Flux in the Marine Atmospheric Surface Layer: A Study on the Southwestern Atlantic Ocean
作者: Hackerott J.A.; Pezzi L.P.; BakhodayPaskyabi M.; Oliveira A.P.; Reuder J.; de Souza R.B.; deCamargo R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:8
起始页码: 3914
结束页码: 3932
语种: 英语
英文关键词: air-sea interaction ; Brazil-Malvinas Confluence region ; eddy covariance ; Marine Atmospheric Surface Layer ; turbulent kinetic energy budget ; wave-induced roughness layer
Scopus关键词: air-sea interaction ; drag coefficient ; eddy covariance ; energy budget ; flux measurement ; kinetic energy ; marine atmosphere ; momentum transfer ; ocean wave ; roughness ; significant wave height ; surface layer ; temperature ; turbulence ; wave force ; wind velocity ; Atlantic Ocean ; Atlantic Ocean (Southwest) ; Brazil-Malvinas Confluence
英文摘要: For the first time, in situ turbulence measurements collected in the vicinity of the Brazil-Malvinas Confluence are used to determine the influence of the ocean waves and atmospheric stability on the Marine Atmospheric Surface Layer. From the analysis of 187 high-frequency sampled segments of temperature and wind velocity, carefully selected from three ship campaigns of the Air-Sea Interaction at Brazil-Malvinas Confluence project, we found a particular behavior of the drag coefficient, with a negative trend for a calm wind speed up to 10 m/s when the significant wave height was lower than 2.5 m, and a continuous decrease of the drag coefficient with increasing wind speed for significant wave height higher than 2.5 m. The results suggest that waves act as roughness elements during high wave conditions, inducing a zero-plane displacement in the order of 0.1 to 1 m as an indication for a wave-induced roughness layer. In addition, the analysis of the turbulent kinetic energy (TKE) budget indicates the occurrence of upward TKE transport mainly during stable conditions, while the general patterns of transport and dissipation of TKE are similar to observations taken over land surfaces. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114065
Appears in Collections:气候减缓与适应

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作者单位: Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, São Paulo, Brazil; Earth Observation General Coordination, National Institute for Space Research, São José dos Campos, Brazil; Nansen Environmental and Remote Sensing Center, and Bjerknes Centre for Climate Research, Bergen, Norway; Geophysical Institute, University of Bergen, and Bjerknes Centre for Climate Research, Bergen, Norway; Southern Regional Center for Space Research, National Institute for Space Research, Santa Maria, Brazil

Recommended Citation:
Hackerott J.A.,Pezzi L.P.,BakhodayPaskyabi M.,et al. The Role of Roughness and Stability on the Momentum Flux in the Marine Atmospheric Surface Layer: A Study on the Southwestern Atlantic Ocean[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(8)
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