气候变化领域集成服务门户(CCPortal): A change in the relation between the Subtropical Indian Ocean Dipole and the South Atlantic Ocean Dipole indices in the past four decades

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DOI	10.5194/acp-23-345-2023
	A change in the relation between the Subtropical Indian Ocean Dipole and the South Atlantic Ocean Dipole indices in the past four decades
	Yu, Lejiang; Zhong, Shiyuan; Vihma, Timo; Sui, Cuijuan; Sun, Bo
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	345
结束页码	353
卷号	23 期号:1 页码:9
英文摘要	We utilized the global atmospheric reanalysis ERA5 and reconstructed sea surface temperature (SST) data from 1979 through 2020 to examine the stability of the relationship between the SST oscillations in the southern Indian Ocean and the Atlantic Ocean, as described by the Subtropical Indian Ocean Dipole (SIOD) and South Atlantic Ocean Dipole (SAOD) indices, respectively. We note a significant positive correlation between the two indices prior to the year 2000 but practically no correlation afterwards. We show that in the two decades prior to 2000, a positive phase of the SAOD is associated with more convective activities over the subtropical southern Atlantic Ocean and eastern Brazil, which trigger a stronger upper-atmosphere wavetrain. This produces stronger southern subtropical highs and surface anti-cyclonic circulations and therefore a stronger correlation between the two indices. The situation is reversed after 2000. Our results are potentially applicable to predictions of precipitation in southern Africa and South America.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000911518400001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273032
作者单位	Polar Research Institute of China; Michigan State University; Finnish Meteorological Institute; National Marine Environmental Forecasting Center
推荐引用方式 GB/T 7714	Yu, Lejiang,Zhong, Shiyuan,Vihma, Timo,et al. A change in the relation between the Subtropical Indian Ocean Dipole and the South Atlantic Ocean Dipole indices in the past four decades[J],2023,23(1):9.
APA	Yu, Lejiang,Zhong, Shiyuan,Vihma, Timo,Sui, Cuijuan,&Sun, Bo.(2023).A change in the relation between the Subtropical Indian Ocean Dipole and the South Atlantic Ocean Dipole indices in the past four decades.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(1),9.
MLA	Yu, Lejiang,et al."A change in the relation between the Subtropical Indian Ocean Dipole and the South Atlantic Ocean Dipole indices in the past four decades".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.1(2023):9.