气候变化领域集成服务门户(CCPortal): Momentum Flux Balance at the Air-Sea Interface

CCPortal

DOI	10.1029/2020JC016563
	Momentum Flux Balance at the Air-Sea Interface
	Qiao W.; Wu L.; Song J.; Li X.; Qiao F.; Rutgersson A.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	Ocean waves can spatiotemporally redistribute the momentum flux at the air-sea interface, which varies with the sea state. Traditional atmosphere-ocean coupled systems assume the ocean-side stress (τoc) to be identical to the air-side stress (τa); consequently, the role of ocean waves is neglected. In this study, the wave impacts on the air-sea momentum flux are investigated based on 1-year high-resolution model simulations in the Baltic Sea using an atmosphere-wave coupled model (Uppsala University-Coupled Model, UU-CM). The simulation results show that τoc can differ significantly from τa in both direction and magnitude. The direction difference between τoc and τa (DD(τoc, τa)) and the normalized momentum flux ((Formula presented.)) decrease with increasing inverse wave age. In general, (Formula presented.) and DD(τoc, τa) are pronounced under wind-following swell and wind-crossing swell conditions, respectively. The occurrence frequencies of large (Formula presented.) and DD(τoc, τa) are higher nearer the coast; statistically, both decrease significantly with increasing water depth because of the joint effect of dissipation processes. Based on four selected areas, we find that alongshore winds (winds blowing parallel to the coastline) are favorable for large angular differences between τoc and τa (DD(τoc, τa) > 5°). However, onshore winds predominate at (Formula presented.). The τa in the wave model is generally less than that obtained from the atmospheric model under low-moderate wind conditions if the wave model feeds only the Charnock coefficient (roughness length) back to the atmospheric model in coupled systems. © 2021. The Authors.
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186474
作者单位	Ocean College, Zhejiang University, Zhoushan, China; Department of Earth Sciences, Uppsala University, Uppsala, Sweden; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China
推荐引用方式 GB/T 7714	Qiao W.,Wu L.,Song J.,et al. Momentum Flux Balance at the Air-Sea Interface[J],2021,126(2).
APA	Qiao W.,Wu L.,Song J.,Li X.,Qiao F.,&Rutgersson A..(2021).Momentum Flux Balance at the Air-Sea Interface.Journal of Geophysical Research: Oceans,126(2).
MLA	Qiao W.,et al."Momentum Flux Balance at the Air-Sea Interface".Journal of Geophysical Research: Oceans 126.2(2021).