气候变化领域集成服务门户(CCPortal): Effects of Buoyancy Flux on Upper-Ocean Turbulent Mixing Generated by Non-Breaking Surface Waves Observed in the South China Sea

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DOI	10.1029/2020JC016816
	Effects of Buoyancy Flux on Upper-Ocean Turbulent Mixing Generated by Non-Breaking Surface Waves Observed in the South China Sea
	Zhuang Z.; Yuan Y.; Zheng Q.; Zhou C.; Zhao X.; Zhang T.
发表日期	2021
ISSN	21699275
卷号	126 期号:5
英文摘要	The surface waves are the most energetic motions, which have great contribution to the turbulent mixing in the upper ocean. In this study, a novel turbulent mixing scheme is proposed in terms of the non-breaking wave velocity shear module with the buoyancy flux. In the scheme, the mixing coefficients can be calculated empirically from the significant wave height, the wave number, the wave frequency, the buoyancy frequency, and the turbulence Prandtl number. The buoyancy fluxes, as well as the non-breaking wave velocity shear production, are important for the upper-ocean turbulent mixing, and make the calculated turbulence dissipation rate closer to in situ observations, which are provided by the “Responses of Marine Hazards to Climate Change in the Western Pacific (ROSE)” Project. The effects of the buoyancy flux on the turbulent mixing are examined based on three numerical experiments using the MASNUM ocean model. In the experiments, the topography, the lateral boundaries, initialization conditions, and the surface forcing fluxes are taken from the GEBCO, HYCOM/NCODA, and ERA5 data, respectively. Comparing to the AVHRR remote sensing sea surface temperature (SST) products and in situ observations, the simulated results with the non-breaking wave-generated turbulent mixing gain significant improvement in the SST, upper-ocean temperature structure, and the mixed layer compared with the classic Mellor-Yamada scheme. The results show that the buoyancy flux is able to suppress the enhanced non-breaking wave-generated turbulent mixing, so that the improved model simulates the observations better than that without the buoyancy effects. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Buoyancy flux; MASNUM ocean circulation model; non-breaking wave-generated mixing; upper-ocean turbulent mixing
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/186302
作者单位	First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD, United States; Hainan Institute of Zhejiang University, Hainan, China; Institute of Oceanographic Instrumentation, Shandong Academy of Sciences, Qingdao, China
推荐引用方式 GB/T 7714	Zhuang Z.,Yuan Y.,Zheng Q.,et al. Effects of Buoyancy Flux on Upper-Ocean Turbulent Mixing Generated by Non-Breaking Surface Waves Observed in the South China Sea[J],2021,126(5).
APA	Zhuang Z.,Yuan Y.,Zheng Q.,Zhou C.,Zhao X.,&Zhang T..(2021).Effects of Buoyancy Flux on Upper-Ocean Turbulent Mixing Generated by Non-Breaking Surface Waves Observed in the South China Sea.Journal of Geophysical Research: Oceans,126(5).
MLA	Zhuang Z.,et al."Effects of Buoyancy Flux on Upper-Ocean Turbulent Mixing Generated by Non-Breaking Surface Waves Observed in the South China Sea".Journal of Geophysical Research: Oceans 126.5(2021).