气候变化领域集成服务门户(CCPortal): Variations in ozone and greenhouse gases as drivers of Southern Hemisphere climate in a medium-complexity global climate model

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DOI	10.1007/s00382-019-04950-7
	Variations in ozone and greenhouse gases as drivers of Southern Hemisphere climate in a medium-complexity global climate model
	Saurral R.I.; Kucharski F.; Raggio G.A.
发表日期	2019
ISSN	0930-7575
起始页码	6645
结束页码	6663
卷号	53 期号:11
英文摘要	The climate of the Southern Hemisphere (SH) is being affected not only by the global increase in the concentration of greenhouse gases (GHG) but also by the ongoing recovery of stratospheric ozone. The competing roles of both are usually studied by means of state-of-the-art global climate models (GCM) due to the complexity in the atmospheric processes and interactions involved. The main objective of this paper is to determine whether quantitatively similar results can be achieved using a simpler, medium-complexity GCM. This includes addressing the sensitivity of the medium-complexity model to changes in GHG and ozone concentrations as well as looking into the plausible mechanisms driving such patterns of variations in atmospheric circulation, precipitation and temperature extremes. Two sets of simulations are performed: one with fixed sea surface temperatures (SST) and another one making use of a mixed-layer ocean model coupled to the GCM. Results show that the GCM is highly sensitive to changes in the atmospheric composition, and that the largest differences are found when SST are allowed to vary accordingly, particularly in the case of temperature extremes. Specific analyses are also performed on changes in subtropical precipitation over the continental regions of the SH, with moisture budget decomposition being applied in order to provide explanations for the rainfall changes described in the manuscript. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Global climate models; Moisture budget; Ozone and greenhouse gases; Southern Hemisphere; SPEEDY
语种	英语
scopus关键词	atmospheric moisture; climate modeling; concentration (composition); global climate; greenhouse gas; ozone; rainfall; Southern Hemisphere; stratosphere
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145824
作者单位	Consejo Nacional de Investigaciones Científicas y Técnicas, Centro de Investigaciones del Mar y la Atmósfera (CIMA/UBA-CONICET), Universidad de Buenos Aires, Int. Güiraldes 2160, Ciudad Universitaria, Pab. 2, Buenos Aires, C1428EGA, Argentina; Departamento de Ciencias de la Atmósfera y los Océanos (DCAO/FCEN/UBA), Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina; Institut Franco-Argentin d’Études sur le Climat et ses Impacts, Unité Mixte Internationale (UMI-IFAECI/CNRS-CONICET-UBA), Buenos Aires, Argentina; Earth System Physics Section, International Centre for Theoretical Physics, Trieste, Italy; Center of Excellence for Climate Change Research/Department of Meteorology, King Abdulaziz University, Jeddah, Saudi Arabia
推荐引用方式 GB/T 7714	Saurral R.I.,Kucharski F.,Raggio G.A.. Variations in ozone and greenhouse gases as drivers of Southern Hemisphere climate in a medium-complexity global climate model[J],2019,53(11).
APA	Saurral R.I.,Kucharski F.,&Raggio G.A..(2019).Variations in ozone and greenhouse gases as drivers of Southern Hemisphere climate in a medium-complexity global climate model.Climate Dynamics,53(11).
MLA	Saurral R.I.,et al."Variations in ozone and greenhouse gases as drivers of Southern Hemisphere climate in a medium-complexity global climate model".Climate Dynamics 53.11(2019).