DOI: 10.1002/joc.5793
Scopus记录号: 2-s2.0-85052392361
论文题名: Decadal change in the relationship between East Asian spring circulation and ENSO: Is it modulated by Pacific Decadal Oscillation?
作者: Wang Y. ; He C. ; Li T.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2019
卷: 39, 期: 1 起始页码: 172
结束页码: 187
语种: 英语
英文关键词: atmospheric internal variability
; coupled model
; decadal climate change
; East Asian spring circulation
; ENSO
; Pacific Decadal Oscillation
Scopus关键词: Atmospheric pressure
; Climate models
; Earth atmosphere
; Modulation
; Oceanography
; Stochastic models
; Stochastic systems
; Surface waters
; Atmospheric general circulation models
; Atmospheric variability
; Coupled modeling
; ENSO
; Interannual variability
; Internal variability
; Pacific decadal oscillation
; Sea surface temperature (SST)
; Climate change
; atmospheric circulation
; climate change
; CMIP
; decadal variation
; El Nino-Southern Oscillation
; Pacific Decadal Oscillation
; spring (season)
英文摘要: Using the NOAA-CIRES 20th century Reanalysis and the ERA-20C reanalysis, the decadal changes in the relationship between East Asian spring circulation (EASC) and ENSO over the past century are investigated. These two datasets consistently show that a decadal change occurred around 1972 for the late 20th century, which coincides with the shift of Pacific Decadal Oscillation (PDO) from the negative to the positive phase. While the interannual variability of EASC is closely related to El Niño-Southern Oscillation (ENSO) during 1973–2000, it is weakly related to ENSO but seems to be dominated by midlatitude atmospheric variability during 1952–1972. However, the relationship between EASC and ENSO is inconsistent between the two reanalysis datasets in the first half of the 20th century, raising a question whether PDO does have a modulation on the ENSO–EASC relationship or it just occurred by chance in 1970s. The pre-industrial control (PIC) experiment of the coupled models from CMIP5 are analysed to address this question. In the long-term simulation of the coupled models under fixed external forcing, the relationship between ENSO and EASC does show substantial decadal oscillation, just as in the observation, but the strength of the ENSO–EASC relationship is not substantially in phase with PDO. Forced by observed sea surface temperature from 1950 to 2010, an atmospheric general circulation model corroborates that the EASC–ENSO relation is almost steady after removing the atmospheric internal variability regardless of the phase of PDO, but it is subject to strong decadal oscillation in the multiple ensemble members with the stochastic modulation of atmospheric internal dynamics. These modelling evidences support the null hypothesis that the relationship between EASC and ENSO is not modulated by PDO. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116686
Appears in Collections: 全球变化的国际研究计划
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作者单位: Key laboratory of Meteorological Disaster, Ministry of Education (KLME) / Joint International Research Laboratory of Climate and Environmental Change (ILCEC) / Collaborative Innovation Center on Forecast of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; International Pacific Research Center and Department of Atmospheric Sciences, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI, United States
Recommended Citation:
Wang Y.,He C.,Li T.. Decadal change in the relationship between East Asian spring circulation and ENSO: Is it modulated by Pacific Decadal Oscillation?[J]. International Journal of Climatology,2019-01-01,39(1)