DOI: 10.1175/JCLI-D-16-0521.1
Scopus记录号: 2-s2.0-85015828801
论文题名: Impacts of different types of ENSO on the interannual seesaw between the Somali and the maritime continent cross-equatorial flows
作者: Li C. ; Luo J.-J. ; Li S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 7 起始页码: 2621
结束页码: 2638
语种: 英语
Scopus关键词: Atmospheric movements
; Atmospheric pressure
; Atmospheric temperature
; Climate change
; Climatology
; Oceanography
; Oscillating flow
; Surface waters
; Cross-equatorial flow
; ENSO
; General circulation model
; Global atmospheric models
; Interannual variability
; Numerical experiments
; Positive correlations
; Sea Surface Temperature gradients
; Nickel
; air-sea interaction
; annual variation
; atmospheric circulation
; atmospheric modeling
; El Nino-Southern Oscillation
; general circulation model
; sea surface temperature
; weather forecasting
; Ethiopia
; Pacific Ocean
; Pacific Ocean (Central)
; Pacific Ocean (East)
; Somali
英文摘要: The impacts of different types of El Niño-Southern Oscillation (ENSO) on the interannual negative correlation (seesaw) between the Somali cross-equatorial flow (CEF) and the Maritime Continent (MC) CEF during boreal summer (June-August) are investigated using the ECMWF twentieth-century reanalysis (ERA-20C) dataset and numerical experiments with a global atmospheric model [the Met Office Unified Model global atmosphere, version 6 (UM-GA6)]. The results suggest that ENSO plays a prominent role in governing the CEF-seesaw relation. A high positive correlation (0.86) exists between the MC CEF and Niño-3.4 index and also in the case of eastern Pacific (EP) El Niño, central Pacific (CP) El Niño, EP La Niña, and CP La Niña events. In contrast, a negative correlation (-0.35) exists between the Somali CEF and Niño-3.4 index, and this negative relation is significant only in the EP El Niño years. Further, the variation of the MC CEF is highly correlated with the local north-south sea surface temperature (SST) gradient, while the variation of the Somali CEF displays little relation with the local SST gradient. The Somali CEF may be remotely influenced by ENSO. The model results confirm that the EP El Niño plays a major role in causing the weakened Somali CEF via modifying the Walker cell. However, the impact of the EP El Niño on the Somali CEF differs with different seasonal background. It is also found that the interannual CEF seesaw displays a multidecadal change before and after the 1950s, which is linked with the multidecadal strengthening of the intensity of the EP ENSO. © 2017 American Meteorological Society. 资助项目: CAS, Chinese Academy of Sciences
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49734
Appears in Collections: 气候变化事实与影响
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作者单位: Climate Change Research Center, Beijing, China; Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Australian Bureau of Meteorology, Melbourne, VIC, Australia; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; China University of Geosciences, Wuhan, China
Recommended Citation:
Li C.,Luo J.-J.,Li S.. Impacts of different types of ENSO on the interannual seesaw between the Somali and the maritime continent cross-equatorial flows[J]. Journal of Climate,2017-01-01,30(7)