气候变化领域集成服务门户(CCPortal): Triggering the Indian Ocean Dipole From the Southern Hemisphere

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DOI	10.1029/2020GL088648
	Triggering the Indian Ocean Dipole From the Southern Hemisphere
	Zhang L.-Y.; Du Y.; Cai W.; Chen Z.; Tozuka T.; Yu J.-Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	This study identifies a new triggering mechanism of the Indian Ocean Dipole (IOD) from the Southern Hemisphere. This mechanism is independent from the El Niño-Southern Oscillation (ENSO) and tends to induce the IOD before its canonical peak season. The joint effects of this mechanism and ENSO may explain different lifetimes and strengths of the IOD. During its positive phase, development of sea surface temperature cold anomalies commences in the southern Indian Ocean, accompanied by an anomalous subtropical high system and anomalous southeasterly winds. The eastward movement of these anomalies enhances the monsoon off Sumatra-Java during May–August, leading to an early positive IOD onset. The pressure variability in the subtropical area is related with the Southern Annular Mode, suggesting a teleconnection between high-latitude and midlatitude climate that can further affect the tropics. To include the subtropical signals may help model prediction of the IOD event. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric pressure; Oceanography; Surface waters; Tropics; Indian ocean dipoles; Pressure variability; Sea surface temperature (SST); Southern Annular Mode; Southern Hemisphere; Southern indian ocean; Southern oscillation; Triggering mechanism; Climatology; canonical analysis; earthquake trigger; easterly wave; El Nino-Southern Oscillation; Indian Ocean Dipole; monsoon; sea surface temperature; Southern Hemisphere; temperature anomaly; trigger mechanism; Greater Sunda Islands; Indian Ocean; Indian Ocean (South); Java; Sumatra; Sunda Isles
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169976
作者单位	State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, and China-Pakistan Joint Research Center on Earth Sciences, CAS, Guangzhou, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China; Department of Earth and Planetary Science, The University of Tokyo, Tokyo, Japan; Key Laboratory of Physical Oceanography, Institute for Advanced Ocean Studies, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Centre for Southern Hemisphere Oceans Research (CSHOR), CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; Department of Earth System Science, University of California, Irvine, CA, United States
推荐引用方式 GB/T 7714	Zhang L.-Y.,Du Y.,Cai W.,et al. Triggering the Indian Ocean Dipole From the Southern Hemisphere[J],2020,47(15).
APA	Zhang L.-Y.,Du Y.,Cai W.,Chen Z.,Tozuka T.,&Yu J.-Y..(2020).Triggering the Indian Ocean Dipole From the Southern Hemisphere.Geophysical Research Letters,47(15).
MLA	Zhang L.-Y.,et al."Triggering the Indian Ocean Dipole From the Southern Hemisphere".Geophysical Research Letters 47.15(2020).