气候变化领域集成服务门户(CCPortal): Trends in the ocean mixed-layer depth in the western North Pacific tropical cyclone basin

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DOI	10.1002/joc.8437
	Trends in the ocean mixed-layer depth in the western North Pacific tropical cyclone basin
	Wu, Liqin; Feng, Xiaofang; Wu, Liguang
发表日期	2024
ISSN	0899-8418
EISSN	1097-0088
起始页码	44
结束页码	6
卷号	44 期号:6
英文摘要	The upper ocean mixed-layer depth (MLD) has been recognized as a crucial factor in understanding the impact of climate change on tropical cyclone (TC) intensity, while the specific MLD variations in the western North Pacific (WNP) basin have received comparatively little attention. Using two ocean reanalysis datasets and the output of 28 CMIP6 models, the climatological mean MLD and its trend in the TC active region are examined. Compared to the ORAS4 and EN4 datasets, the spatial pattern of the climatological mean MLD can be well simulated in the multi-model ensemble (MME). The mean MLD decreases with increasing latitude and maintains the maximum in the equatorial region. The spatial patterns of MLD long-term (1958-2017) and short-term (1979-2017) trends are deepening in the TC active region, with the relatively large positive trends occurring to the southeastern WNP primarily between 5 degrees N and 15 degrees N. However, the simulated trend in the MME is dominant with shoaling MLD, and the shoaling of the MLD is also projected under the SSP5-8.5 scenario. It is suggested that the bias on the simulated shoaling of the MLD in CMIP6 models may result from the overestimated enhancement of the upper-ocean stratification. Thus, there is a discrepancy between the observed and simulated MLD trends in the WNP basin, which may have implications for TC intensity change under global warming scenarios. The historical simulated changes of the mixed-layer depth (MLD) are dominant with negative trends in the TC active region in CMIP6 models, while it shows positive trends in observations. The projected shoaling of the MLD in models may result from the overestimated enhancement of the upper-ocean stratification. image
英文关键词	climate change; model evaluation; ocean mixed-layer depth; tropical cyclone
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001189219200001
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290491
作者单位	Fudan University; Fudan University; Fudan University; Fudan University
推荐引用方式 GB/T 7714	Wu, Liqin,Feng, Xiaofang,Wu, Liguang. Trends in the ocean mixed-layer depth in the western North Pacific tropical cyclone basin[J],2024,44(6).
APA	Wu, Liqin,Feng, Xiaofang,&Wu, Liguang.(2024).Trends in the ocean mixed-layer depth in the western North Pacific tropical cyclone basin.INTERNATIONAL JOURNAL OF CLIMATOLOGY,44(6).
MLA	Wu, Liqin,et al."Trends in the ocean mixed-layer depth in the western North Pacific tropical cyclone basin".INTERNATIONAL JOURNAL OF CLIMATOLOGY 44.6(2024).