DOI: 10.1175/JCLI-D-17-0788.1
Scopus记录号: 2-s2.0-85048487798
论文题名: Relationship between El Niño-Southern Oscillation and the symmetry of the hadley circulation: Role of the sea surface temperature annual cycle
作者: Guo Y.-P. ; Tan Z.-M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 13 起始页码: 5319
结束页码: 5332
语种: 英语
英文关键词: Annual variations
; Anomalies
; El Nino
; ENSO
; Hadley circulation
; Interannual variability
Scopus关键词: Amplitude modulation
; Atmospheric pressure
; Atmospheric temperature
; Climate change
; Submarine geophysics
; Surface properties
; Surface waters
; Annual variations
; Anomalies
; EL Nino
; ENSO
; Hadley circulation
; Interannual variability
; Oceanography
; annual cycle
; annual variation
; anomaly
; climate effect
; El Nino
; El Nino-Southern Oscillation
; Hadley cell
; La Nina
; sea surface temperature
; Pacific Ocean
; Pacific Ocean (West)
英文摘要: El Niño-Southern Oscillation (ENSO), which features an equatorial quasi-symmetric sea surface temperature anomaly (SSTA), is related to both the symmetric and asymmetric components of the Hadley circulation (HC) variability. However, the mechanisms for such a nonlinear HC-ENSO relationship are still unclear. Using 36-yr monthly reanalysis datasets, this study shows that the month-to-month HC variability is dominated by two principal modes, the asymmetric mode (AM) and symmetric mode (SM), both of which are highly correlated with ENSO variability. Furthermore, the relationship between the HC principal modes and the ENSO SSTA is modulated by the western Pacific SST annual cycle. When the zonal mean western Pacific SST peaks off (on) the equator, the ENSO SSTA leads to the AM (SM) of HC variability. This is because the zonal mean western Pacific SST peak provides a warmer background favorable for the SSTA to stimulate convection, indicating the important role of the combined effect of the SST annual cycle and the ENSO SSTA in affecting the HC variability. Importantly, the western Pacific SST annual cycle has no such modulation effect during central Pacific El Niño or La Niña events. The results have important implications for simulating and predicting the climatic impacts of ENSO and HC variability. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111490
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Key Laboratory of Mesoscale Severe Weather, Ministry of Education, Nanjing, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China
Recommended Citation:
Guo Y.-P.,Tan Z.-M.. Relationship between El Niño-Southern Oscillation and the symmetry of the hadley circulation: Role of the sea surface temperature annual cycle[J]. Journal of Climate,2018-01-01,31(13)