气候变化领域集成服务门户(CCPortal): Fast Enhancement of the Stratification in the Indian Ocean over the Past 20 Years

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DOI	10.1175/JCLI-D-23-0255.1
	Fast Enhancement of the Stratification in the Indian Ocean over the Past 20 Years
	Peng, Suqi; Wang, Qiang
发表日期	2024
ISSN	0894-8755
EISSN	1520-0442
起始页码	37
结束页码	7
卷号	37 期号:7
英文摘要	Indian Ocean (IO) stratification has important effects on the air-sea interaction, ocean dynamics, and ecology. It is, therefore, of significance to investigate the changes in IO stratification. In this study, we use ensemble empirical mode decomposition (EEMD) to extract the nonlinear long-term trend in the upper IO stratification quantified by potential energy anomalies. The results show that the strengthening of the stratification is spatially and temporally nonuniform. Specifically, the trend of stratification intensified gradually before 1996, but accelerated rapidly after 1996. Temperature and salinity changes play a crucial role in the fast enhancement of stratification and its regional differences. Temperature variations dominate the stratification trend in ;90% of the IO area, while the contributions of salinity changes are mainly in the southeast Indian Ocean (SEIO). Vertically, the rapid enhancement of stratification is caused by the trend of temperature and salt in the upper 400 m. We further perform temperature budget analysis and find that the warming trend in the upper 400 m south of the IO is mainly modulated by vertical advection and meridional advection, while the warming in the north of the IO is mainly induced by air-sea heat fluxes. Salinity budget analysis shows that ocean advection has played a primary role in modulating SEIO salinity over the past 20 years.
英文关键词	Indian Ocean; Advection; Atmosphere-ocean interaction; Climate change; Salinity; Temperature
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001182185600001
来源期刊	JOURNAL OF CLIMATE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297692
作者单位	Ministry of Natural Resources of the People's Republic of China; Hohai University; Hohai University
推荐引用方式 GB/T 7714	Peng, Suqi,Wang, Qiang. Fast Enhancement of the Stratification in the Indian Ocean over the Past 20 Years[J],2024,37(7).
APA	Peng, Suqi,&Wang, Qiang.(2024).Fast Enhancement of the Stratification in the Indian Ocean over the Past 20 Years.JOURNAL OF CLIMATE,37(7).
MLA	Peng, Suqi,et al."Fast Enhancement of the Stratification in the Indian Ocean over the Past 20 Years".JOURNAL OF CLIMATE 37.7(2024).