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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. |
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