DOI: 10.1002/2016GL068639
论文题名: Anomalous Walker circulations associated with two flavors of the Indian Ocean Dipole
作者: Tozuka T. ; Endo S. ; Yamagata T.
刊名: Geophysical Research Letters
ISSN: 0094-9635
EISSN: 1944-9366
出版年: 2016
卷: 43, 期: 10 起始页码: 5378
结束页码: 5384
语种: 英语
英文关键词: Indian Ocean Dipole
; tropical Indian Ocean
; Walker circulation
Scopus关键词: Atmospheric temperature
; Surface waters
; Tropics
; Indian Ocean dipole
; Indian ocean dipoles
; Ocean atmosphere
; Sea surface temperature anomalies
; Single cells
; SST anomalies
; Tropical Indian ocean
; Walker circulation
; Oceanography
英文摘要: The Walker circulation is the key component of the atmospheric zonal circulation in the tropics. In this study, it is shown that anomalous Walker circulations associated with two types of the Indian Ocean Dipole (IOD) are remarkably different. During a positive canonical IOD with negative (positive) sea surface temperature (SST) anomalies in the eastern (central to western) tropical Indian Ocean, a single-cell anomalous Walker circulation forms over the Indian Ocean. On the other hand, a double-cell anomalous Walker circulation with a rising branch in the central Indian Ocean is formed during a positive IOD Modoki, which is associated with positive (negative) SST anomalies over the central (eastern and western) tropical Indian Ocean. The above anomalous Walker circulations are found to develop as part of positive ocean-atmosphere feedback. Furthermore, the above difference in the anomalous Walker circulation may affect the biennial tendency of the IOD. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971443020&doi=10.1002%2f2016GL068639&partnerID=40&md5=b00b709e75a60f4a9faebf570fc46c47
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10598
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan
Recommended Citation:
Tozuka T.,Endo S.,Yamagata T.. Anomalous Walker circulations associated with two flavors of the Indian Ocean Dipole[J]. Geophysical Research Letters,2016-01-01,43(10).