DOI: 10.1007/s00382-017-3746-2
Scopus记录号: 2-s2.0-85021767475
论文题名: Stratosphere-resolving CMIP5 models simulate different changes in the Southern Hemisphere
作者: Rea G. ; Riccio A. ; Fierli F. ; Cairo F. ; Cagnazzo C.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-05-06 起始页码: 2239
结束页码: 2255
语种: 英语
英文关键词: CMIP5 models
; Southern Hemisphere change
; Stratosphere
Scopus关键词: atmospheric circulation
; climate modeling
; climate variation
; CMIP
; cooling
; long-term change
; ozone depletion
; seasonal variation
; Southern Hemisphere
; stratosphere
; troposphere
英文摘要: This work documents long-term changes in the Southern Hemisphere circulation in the austral spring–summer season in the Coupled Intercomparison Project Phase 5 models, showing that those changes are larger in magnitude and closer to ERA-Interim and other reanalyses if models include a dynamical representation of the stratosphere. Specifically, models with a high-top and included dynamical and—in some cases—chemical feedbacks within the stratosphere better simulate the lower stratospheric cooling observed over 1979–2001 and strongly driven by ozone depletion, when compared to the other models. This occurs because high-top models can fully capture the stratospheric large scale circulation response to the ozone-induced cooling. Interestingly, this difference is also found at the surface for the Southern Annular Mode (SAM) changes, even though all model categories tend to underestimate SAM trends over those decades. In this analysis, models including a proper dynamical stratosphere are more sensitive to lower stratospheric cooling in their tropospheric circulation response. After a brief discussion of two RCP scenarios, our study confirms that at least for large changes in the extratropical regions, stratospheric changes induced by external forcing have to be properly simulated, as they are important drivers of tropospheric climate variations. © 2017, Springer-Verlag GmbH Germany. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109393
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Istituto di Scienze dell’Atmosfera e del Clima del CNR, ISAC-CNR, Via Fosso del Cavaliere, 100, Rome, 00133, Italy; Department of Science and Technology, Parthenope University of Naples, Centro Direzionale Isola C4, Naples, 80143, Italy
Recommended Citation:
Rea G.,Riccio A.,Fierli F.,et al. Stratosphere-resolving CMIP5 models simulate different changes in the Southern Hemisphere[J]. Climate Dynamics,2018-01-01,50(2018-05-06)