气候变化领域集成服务门户(CCPortal): Evaluation of snow cover and snow water equivalent in the continental Arctic in CMIP5 models

CCPortal

DOI	10.1007/s00382-020-05434-9
	Evaluation of snow cover and snow water equivalent in the continental Arctic in CMIP5 models
	Santolaria-Otín M.; Zolina O.
发表日期	2020
ISSN	0930-7575
起始页码	2993
结束页码	3016
卷号	55
英文摘要	Spatial and temporal patterns of snow cover extent (SCE) and snow water equivalent (SWE) over the terrestrial Arctic are analyzed based on multiple observational datasets and an ensemble of CMIP5 models during 1979–2005. For evaluation of historical simulations of the Coupled Model Intercomparison Project (CMIP5) ensemble, we used two reanalysis products, one satellite-observed product and an ensemble of different datasets. The CMIP5 models tend to significantly underestimate the observed SCE in spring but are in better agreement with observations in autumn; overall, the observed annual SCE cycle is well captured by the CMIP5 ensemble. In contrast, for SWE, the annual cycle is significantly biased, especially over North America, where some models retain snow even in summer, in disagreement with observations. The snow margin position (SMP) in the CMIP5 historical simulations is in better agreement with observations in spring than in autumn, when close agreement across the CMIP5 models is only found in central Siberia. Historical experiments from most CMIP5 models show negative pan-Arctic trends in SCE and SWE. These trends are, however, considerably weaker (and less statistically significant) than those reported from observations. Most CMIP5 models can more accurately capture the trend pattern of SCE than that of SWE, which shows quantitative and qualitative differences with the observed trends over Eurasia. Our results demonstrate the importance of using multiple data sources for the evaluation of snow characteristics in climate models. Further developments should focus on the improvement of both dataset quality and snow representation in climate models, especially ESM-SnowMIP. © 2020, The Author(s).
英文关键词	Arctic; CMIP5 models; Snow cover; Snow water equivalent
语种	英语
scopus关键词	climate modeling; CMIP; seasonal variation; snow cover; snow water equivalent; spatiotemporal analysis; Arctic; North America; Siberia
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/145245
作者单位	Institut des Géosciences de l’Environnement (IGE) CNRS-UGA, Grenoble, 38041, France; P.P. Shirshov Institute of Oceanology of Russian Academy of Sciences, Moscow, 117997, Russian Federation
推荐引用方式 GB/T 7714	Santolaria-Otín M.,Zolina O.. Evaluation of snow cover and snow water equivalent in the continental Arctic in CMIP5 models[J],2020,55.
APA	Santolaria-Otín M.,&Zolina O..(2020).Evaluation of snow cover and snow water equivalent in the continental Arctic in CMIP5 models.Climate Dynamics,55.
MLA	Santolaria-Otín M.,et al."Evaluation of snow cover and snow water equivalent in the continental Arctic in CMIP5 models".Climate Dynamics 55(2020).