DOI: 10.1007/s00382-015-2701-3
Scopus记录号: 2-s2.0-84931086267
论文题名: Teleconnections of Indian monsoon rainfall with AMO and Atlantic tripole
作者: Krishnamurthy L. ; Krishnamurthy V.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期: 2017-07-08 起始页码: 2269
结束页码: 2285
语种: 英语
英文关键词: AMO
; Atlantic tripole
; Decadal variability
; Indian monsoon
; NAO
; NCAR ccsm4
英文摘要: The teleconnections between the decadal modes in the Indian monsoon rainfall (IMR) and the North Atlantic sea surface temperature are investigated. The two decadal modes of variability in the North Atlantic, the Atlantic multidecadal oscillation (AMO) and the Atlantic tripole, have opposite relation with the two decadal modes of IMR. The AMO has positive correlation with the monsoon rainfall while the Atlantic tripole has negative correlation. This study has put forward hypotheses for the mechanisms involved in the teleconnections of the AMO and the Atlantic tripole with the IMR. The warm phase of AMO may influence the monsoon through the summer North Atlantic Oscillation (SNAO) and further through the equatorial zonal winds which increase the moisture flow over India by enhancing the southwesterly flow. The warm phase of Atlantic tripole may impact the monsoon through the all-season NAO, leading to decreased moisture flow over India through the equatorial wind pattern. The observed relations between the decadal modes in the North Atlantic and the Indian monsoon are explored in the simulations of National Center for Atmospheric Research Community Climate System Model version 4 (CCSM4) model. Although the model supports the observed decadal teleconnection between the Atlantic Ocean and Indian monsoon, it has limitations in capturing the details of the spatial pattern associated with the teleconnection. The teleconnections of AMO and Atlantic tripole with the Indian monsoon is further demonstrated through an experiment with CCSM4 by decoupling the North Atlantic Ocean. The hypotheses for the mechanisms of the Atlantic teleconnections are also explored in the CCSM4 simulation. © Springer-Verlag Berlin Heidelberg 2015. 资助项目: NOAA, National Oceanic and Atmospheric Administration
; NSF, National Science Foundation
; NSF, National Science Foundation
; NASA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53681
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Atmospheric, Oceanic and Earth Sciences, George Mason University, Fairfax, VA, United States; Center for Ocean-Land-Atmosphere Studies, Institute of Global Environment and Society, Fairfax, VA, United States; UCAR/NOAA Geophysical Fluid Dynamics Laboratory, Princeton University Forrestal Campus, 201 Forrestal Road, Princeton, NJ, United States
Recommended Citation:
Krishnamurthy L.,Krishnamurthy V.. Teleconnections of Indian monsoon rainfall with AMO and Atlantic tripole[J]. Climate Dynamics,2016-01-01,46(2017-07-08)