DOI: 10.1007/s00382-014-2454-4
Scopus记录号: 2-s2.0-84943815727
论文题名: Intensified impact of tropical Atlantic SST on the western North Pacific summer climate under a weakened Atlantic thermohaline circulation
作者: Chen W. ; Lee J.-Y. ; Lu R. ; Dong B. ; Ha K.-J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-07-08 起始页码: 2033
结束页码: 2046
语种: 英语
英文关键词: Atlantic multidecadal oscillation (AMO)
; Tropical North Atlantic (TNA) SST
; Weakened Atlantic thermohaline circulation (THC)
; Western North Pacific (WNP) summer climate
英文摘要: The tropical North Atlantic (TNA) sea surface temperature (SST) has been identified as one of regulators on the boreal summer climate over the western North Pacific (WNP), in addition to SSTs in the tropical Pacific and Indian Oceans. The major physical process proposed is that the TNA warming induces a pair of cyclonic circulation anomaly over the eastern Pacific and negative precipitation anomalies over the eastern to central tropical Pacific, which in turn lead to an anticyclonic circulation anomaly over the western to central North Pacific. This study further demonstrates that the modulation of the TNA warming to the WNP summer climate anomaly tends to be intensified under background of the weakened Atlantic thermohaline circulation (THC) by using a water-hosing experiment. The results suggest that the weakened THC induces a decrease in thermocline depth over the TNA region, resulting in the enhanced sensitivity of SST variability to wind anomalies and thus intensification of the interannual variation of TNA SST. Under the weakened THC, the atmospheric responses to the TNA warming are westward shifted, enhancing the anticyclonic circulation and negative precipitation anomaly over the WNP. This study supports the recent finding that the negative phase of the Atlantic multidecadal oscillation after the late 1960s has been favourable for the strengthening of the connection between TNA SST variability and WNP summer climate and has important implications for seasonal prediction and future projection of the WNP summer climate. © 2014, Springer-Verlag Berlin Heidelberg. 资助项目: NRF, National Research Foundation of Korea
; NSFC, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53975
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physic, Chinese Academy of Sciences, Beijing, China; Research Center for Climate Sciences, Pusan National University, Busan, South Korea; Department of Meteorology, National Centre for Atmospheric Science-Climate, University of Reading, Reading, United Kingdom; Department of Atmospheric Sciences, Pusan National University, Busan, South Korea
Recommended Citation:
Chen W.,Lee J.-Y.,Lu R.,et al. Intensified impact of tropical Atlantic SST on the western North Pacific summer climate under a weakened Atlantic thermohaline circulation[J]. Climate Dynamics,2015-01-01,45(2017-07-08)