DOI: 10.1175/JCLI-D-17-0815.1
Scopus记录号: 2-s2.0-85050221784
论文题名: Impact of the South China sea summer monsoon on the Indian Ocean dipole
作者: Zhang Y. ; Li J. ; Xue J. ; Feng J. ; Wang Q. ; Xu Y. ; Wang Y. ; Zheng F.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 16 起始页码: 6557
结束页码: 6573
语种: 英语
英文关键词: Atmosphere-ocean interaction
; Indian Ocean
; Monsoons
; North Pacific Ocean
Scopus关键词: Atmospheric thermodynamics
; Climate change
; Surface waters
; Tropics
; Atmosphere-ocean interactions
; Indian ocean
; Monsoons
; North Pacific Ocean
; Sea surface temperature anomalies
; South China Sea summer monsoon
; Tropical Indian Ocean SST
; Western North Pacific
; Oceanography
; air-sea interaction
; Indian Ocean Dipole
; monsoon
; precipitation (climatology)
; sea surface temperature
; summer
; temperature anomaly
; China
; Greater Sunda Islands
; Indian Ocean
; Java
; Pacific Ocean
; Pacific Ocean (North)
; South China Sea
; Sumatra
; Sunda Isles
英文摘要: This paper investigates the impact of the South China Sea summer monsoon (SCSSM) on the Indian Ocean dipole (IOD). The results show that the SCSSM has a significant positive relationship with the IOD over the boreal summer [June-August (JJA)] and fall [September-November (SON)]. When the SCSSM is strong, the enhanced southwesterly winds that bring more water vapor to the western North Pacific (WNP) lead to surplus precipitation in the WNP, inducing anomalous ascending there. Consequently, the anomalous descending branch of the SCSSM Hadley circulation (SCSSMHC) develops over the Maritime Continent (MC), favoring deficit precipitation in situ. The precipitation dipole over the WNP and MC as well as the enhanced SCSSMHC leads to intensification of the southeasterly anomalies off Sumatra and Java, which then contributes to the negative sea surface temperature (SST) anomalies through the positive wind-evaporation-SST and wind-thermocline-SST (Bjerknes) feedbacks. Consequently, a positive IOD develops because of the increased zonal gradient of the tropical Indian Ocean SST anomalies and vice versa. The SCSSM has a peak correlation with the IOD when the former leads the latter by three months. This implies that a positive IOD can persist from JJA to SON and reach its mature phase within the frame of the positive Bjerknes feedback in SON. In addition, the local and remote SST anomalies in the tropical Indian and Pacific Oceans have a slight influence on the relationship between the SCSSM and precipitation dipole over the WNP and MC. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111436
Appears in Collections: 气候减缓与适应
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作者单位: College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; College of Earth Science, University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhang Y.,Li J.,Xue J.,et al. Impact of the South China sea summer monsoon on the Indian Ocean dipole[J]. Journal of Climate,2018-01-01,31(16)