气候变化领域集成服务门户(CCPortal): Impact of Shoaling Ocean Surface Waves on Wind Stress and Drag Coefficient in Coastal Waters: 1. Uniform Wind

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DOI	10.1029/2020JC016222
	Impact of Shoaling Ocean Surface Waves on Wind Stress and Drag Coefficient in Coastal Waters: 1. Uniform Wind
	Chen X.; Hara T.; Ginis I.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	This study investigates the impact of shoaling wind waves on the drag coefficient in coastal waters. The shoaling wave spectrum is simulated using the WAVEWATCH III (WW3) model with shallow water physics. The high-frequency part (spectral tail), which is unresolved in the wave model, is empirically parameterized as a function of wind speed. The full wave spectrum is then used to estimate the sea-state-dependent wind stress and drag coefficient. Shoaling wind waves are simulated on a sloped bottom under the idealized steady uniform wind. Experimental wind speed spans from 10 to 65 m/s, and the bottom slope is varied from 1:100 to 1:2,000. Our results show that as water depth decreases, the drag coefficient increases gradually to a peak value and then rapidly reduces compared to the deep water value. The maximum Cd value occurs roughly where depth-induced wave breaking starts. The magnitude of Cd enhancement is more significant on a steeper slope and can reach 40%. This Cd enhancement is mainly due to steepening of waves and reduction of the wave phase speed during the shoaling. Our results also suggest significantly larger variability of Cd at a given wind speed in finite-depth waters than in deep water. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	coastal water; drag coefficient; finite depth; shoaling ocean surface waves; wind stress
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/186771
作者单位	Graduate School of Oceanography, University of Rhode Island, Kingston, RI, United States
推荐引用方式 GB/T 7714	Chen X.,Hara T.,Ginis I.. Impact of Shoaling Ocean Surface Waves on Wind Stress and Drag Coefficient in Coastal Waters: 1. Uniform Wind[J],2020,125(7).
APA	Chen X.,Hara T.,&Ginis I..(2020).Impact of Shoaling Ocean Surface Waves on Wind Stress and Drag Coefficient in Coastal Waters: 1. Uniform Wind.Journal of Geophysical Research: Oceans,125(7).
MLA	Chen X.,et al."Impact of Shoaling Ocean Surface Waves on Wind Stress and Drag Coefficient in Coastal Waters: 1. Uniform Wind".Journal of Geophysical Research: Oceans 125.7(2020).