Effects of the Non-breaking Surface Wave-induced Vertical Mixing on Winter Mixed Layer Depth in Subtropical Regions

doi:10.1002/2017JC013038

	Effects of the Non-breaking Surface Wave-induced Vertical Mixing on Winter Mixed Layer Depth in Subtropical Regions
	Chen, Siyu 1,2; Qiao, Fangli 1,2,3; Huang, Chuanjiang 1,2,3; Song, Zhenya 1,2,3
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2018-04
卷号	123 期号:4 页码:2934-2944
关键词	winter mixed layer depth subtropical regions surface wave induced mixing
ISSN号	2169-9275
DOI	10.1002/2017JC013038
英文摘要	Compared to observations, the simulated multi-model mean surface oceanic mixed layer depth (MLD) during winter in the subtropical regions of both hemispheres shows deep bias from 45 CMIP5 climate models. Our results from two numerical experiments using one of CMIP5 models show that the non-breaking surface wave-induced vertical mixing can serve as a remedy. The enhanced vertical mixing increases the heat content of the upper ocean and reduces the oceanic potential density in winter which then stabilize the upper ocean and shallow the simulated winter MLD in subtropical regions. This heat content increase is not directly induced by air-sea heat fluxes during winter, but is the legacy of temperature increase during summer, when the additional vertical mixing induces an enhanced surface heating. The simulation biases of the annually averaged water temperatures in the upper 400 m reduced by 43% and 28% in south and north latitude bands between 20 degrees and 40 degrees, respectively. The non-breaking surface wave-induced vertical mixing shallows both boreal and austral winter MLDs by 2-11 m (a change of 5-20%) in both northern and southern subtropical regions. These results indicate that the incorporation of vertical mixing induced by the non-breaking surface waves in our experiments can improve the simulation of boreal and austral winter MLDs in northern and southern subtropical regions.
资助项目	Qingdao National Laboratory for Marine Science and Technology through the Transparency Program of Pacific Ocean-South China Sea-Indian Ocean[2015ASKJ01]
WOS关键词	GLOBAL CLIMATE MODEL ; SEA-ICE ; COUPLED MODEL ; NORTH PACIFIC ; SYSTEM MODEL ; OCEAN ; SIMULATION ; VERSION ; CMIP5 ; TEMPERATURE
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000434131900035
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26649]
专题	自然资源部第一海洋研究所
通讯作者	Qiao, Fangli
作者单位	1.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Peoples R China 3.State Ocean Adm, Key Lab Marine Sci & Numer Modeling, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Chen, Siyu,Qiao, Fangli,Huang, Chuanjiang,et al. Effects of the Non-breaking Surface Wave-induced Vertical Mixing on Winter Mixed Layer Depth in Subtropical Regions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(4):2934-2944.
APA	Chen, Siyu,Qiao, Fangli,Huang, Chuanjiang,&Song, Zhenya.(2018).Effects of the Non-breaking Surface Wave-induced Vertical Mixing on Winter Mixed Layer Depth in Subtropical Regions.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(4),2934-2944.
MLA	Chen, Siyu,et al."Effects of the Non-breaking Surface Wave-induced Vertical Mixing on Winter Mixed Layer Depth in Subtropical Regions".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.4(2018):2934-2944.