DOI: 10.1002/2015GL066768
论文题名: An atmospheric mechanism for ENSO amplitude changes under an abrupt quadrupling of CO2 concentration in CMIP5 models
作者: Rashid H.A. ; Hirst A.C. ; Marsland S.J.
刊名: Geophysical Research Letters
ISSN: 0094-9339
EISSN: 1944-9070
出版年: 2016
卷: 43, 期: 4 起始页码: 1687
结束页码: 1694
语种: 英语
英文关键词: CMIP5 models
; CO2 radiative forcing
; ENSO
; zonal wind stress forcing efficiency
; zonal wind-deep convection coupling
Scopus关键词: Atmospheric pressure
; Atmospheric radiation
; Atmospheric temperature
; Carbon dioxide
; Climatology
; Efficiency
; Heat flux
; Natural convection
; Oceanography
; Surface waters
; Wind stress
; Amplitude changes
; Coupled Model Intercomparison Project
; Deep convection
; ENSO
; Radiative forcings
; Sea surface temperature (SST)
; Southern oscillation
; Western Pacific
; Climate models
英文摘要: We investigate the impact of a quadrupled CO2 concentration on the simulated El Niño-Southern Oscillation (ENSO) amplitudes in 19 Coupled Model Intercomparison Project phase 5 (CMIP5) climate models. The amplitude of ENSO-related sea surface temperature (SST) variability decreases in 11 of these models, and increases in the rest, in response to the enhanced radiative forcing. These opposing amplitude changes are predominantly explained by opposite changes in the time-lagged SST response to a given central Pacific zonal wind stress (ZWS) forcing, with the net heat flux forcing and the SST-ZWS feedback playing smaller roles. We find a robust relationship between the changes in the ZWS forcing efficiency and those in the ZWS-deep convection coupling in the central-western Pacific, indicating an important role for this coupling in ENSO amplitude changes. Indeed, the projected change in this coupling is indicative of the projected change in ENSO-related SST variability. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959432915&doi=10.1002%2f2015GL066768&partnerID=40&md5=83d6e33df00ae431cda952685166fe5e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10302
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: CSIRO Oceans and Atmosphere, Aspendale, Australia
Recommended Citation:
Rashid H.A.,Hirst A.C.,Marsland S.J.. An atmospheric mechanism for ENSO amplitude changes under an abrupt quadrupling of CO2 concentration in CMIP5 models[J]. Geophysical Research Letters,2016-01-01,43(4).