气候变化领域集成服务门户(CCPortal): An analysis of present and future seasonal Northern Hemisphere land snow cover simulated by CMIP5 coupled climate models

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DOI	10.5194/tc-7-67-2013
	An analysis of present and future seasonal Northern Hemisphere land snow cover simulated by CMIP5 coupled climate models
	Brutel-Vuilmet C.; Ménégoz M.; Krinner G.
发表日期	2013
ISSN	19940416
卷号	7 期号:1
英文摘要	The 20th century seasonal Northern Hemisphere (NH) land snow cover as simulated by available CMIP5 model output is compared to observations. On average, the models reproduce the observed snow cover extent very well, but the significant trend towards a reduced spring snow cover extent over the 1979-2005 period is underestimated (observed: (-3.4 ± 1.1)% per decade; simulated: (-1.0 ± 0.3)% per decade). We show that this is linked to the simulated Northern Hemisphere extratropical spring land warming trend over the same period, which is also underestimated, although the models, on average, correctly capture the observed global warming trend. There is a good linear correlation between the extent of hemispheric seasonal spring snow cover and boreal large-scale spring surface air temperature in the models, supported by available observations. This relationship also persists in the future and is independent of the particular anthropogenic climate forcing scenario. Similarly, the simulated linear relationship between the hemispheric seasonal spring snow cover extent and global mean annual mean surface air temperature is stable in time. However, the slope of this relationship is underestimated at present (observed: (-11.8 ± 2.7)% C-1; simulated: (-5.1 ± 3.0)% C-1) because the trend towards lower snow cover extent is underestimated, while the recent global warming trend is correctly represented. © 2013 Author(s).
学科领域	air temperature; climate forcing; climate modeling; correlation; global warming; Northern Hemisphere; simulation; slope; snow cover
语种	英语
scopus关键词	air temperature; climate forcing; climate modeling; correlation; global warming; Northern Hemisphere; simulation; slope; snow cover
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120308
作者单位	CNRS and UJF Grenoble 1, Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE, UMR5183), 38041 Grenoble, France
推荐引用方式 GB/T 7714	Brutel-Vuilmet C.,Ménégoz M.,Krinner G.. An analysis of present and future seasonal Northern Hemisphere land snow cover simulated by CMIP5 coupled climate models[J],2013,7(1).
APA	Brutel-Vuilmet C.,Ménégoz M.,&Krinner G..(2013).An analysis of present and future seasonal Northern Hemisphere land snow cover simulated by CMIP5 coupled climate models.Cryosphere,7(1).
MLA	Brutel-Vuilmet C.,et al."An analysis of present and future seasonal Northern Hemisphere land snow cover simulated by CMIP5 coupled climate models".Cryosphere 7.1(2013).