气候变化领域集成服务门户(CCPortal): Elevation-dependent warming in global climate model simulations at high spatial resolution

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DOI	10.1007/s00382-018-4287-z
	Elevation-dependent warming in global climate model simulations at high spatial resolution
	Palazzi E.; Mortarini L.; Terzago S.; von Hardenberg J.
发表日期	2019
ISSN	0930-7575
起始页码	2685
结束页码	2702
卷号	52 期号:2020-05-06
英文摘要	The enhancement of warming rates with elevation, so-called elevation-dependent warming (EDW), is one of the regional, still not completely understood, expressions of global warming. Sentinels of climate and environmental changes, mountains have experienced more rapid and intense warming trends in the recent decades, leading to serious impacts on mountain ecosystems and downstream. In this paper we use a state-of-the-art Global Climate Model (EC-Earth) to investigate the impact of model spatial resolution on the representation of this phenomenon and to highlight possible differences in EDW and its causes in different mountain regions of the Northern Hemisphere. To this end we use EC-Earth climate simulations at five different spatial resolutions, from ∼ 125 to ∼ 16 km, to explore the existence and the driving mechanisms of EDW in the Colorado Rocky Mountains, the Greater Alpine Region and the Tibetan Plateau–Himalayas. Our results show that the more frequent EDW drivers in all regions and seasons are the changes in albedo and in downward thermal radiation and this is reflected in both daytime and nighttime warming. In the Tibetan Plateau-Himalayas and in the Greater Alpine Region, an additional driver is the change in specific humidity. We also find that, while generally the model shows no clear resolution dependence in its ability to simulate the existence of EDW in the different regions, specific EDW characteristics such as its intensity and the relative role of different driving mechanisms may be different in simulations performed at different spatial resolutions. Moreover, we find that the role of internal climate variability can be significant in modulating the EDW signal, as suggested by the spread found in the multi-member ensemble of the EC-Earth experiments which we use. © 2018, The Author(s).
英文关键词	Elevation-dependent warming; Global climate models; Greater Alpine Region; Model resolution; Rocky mountains; Tibetan Plateau
语种	英语
scopus关键词	climate modeling; computer simulation; elevation; global climate; global warming; regional climate; spatial resolution; China; Qinghai-Xizang Plateau
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/146494
作者单位	Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), corso Fiume 4, Torino, 10133, Italy; Departamento de Fisica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
推荐引用方式 GB/T 7714	Palazzi E.,Mortarini L.,Terzago S.,et al. Elevation-dependent warming in global climate model simulations at high spatial resolution[J],2019,52(2020-05-06).
APA	Palazzi E.,Mortarini L.,Terzago S.,&von Hardenberg J..(2019).Elevation-dependent warming in global climate model simulations at high spatial resolution.Climate Dynamics,52(2020-05-06).
MLA	Palazzi E.,et al."Elevation-dependent warming in global climate model simulations at high spatial resolution".Climate Dynamics 52.2020-05-06(2019).