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	Evaluation of Snow Depth and Snow Cover Fraction Simulated by Two Versions of the Flexible Global Ocean–Atmosphere–Land System Model
	XIA Kun ; WANG Bin ; LI Lijuan ; SHEN Si ; HUANG Wenyu ; XU Shiming ; DONG Li ; LIU Li ; XIA Kun ; WANG Bin ; LI Lijuan ; SHEN Si ; HUANG Wenyu ; XU Shiming ; DONG Li ; LIU Li
	2016-03-30 ; 2016-03-30
关键词	snow depth snow cover fraction FGOALS-s2 FGOALS-g2 P426.63
其他题名	Evaluation of Snow Depth and Snow Cover Fraction Simulated by Two Versions of the Flexible Global Ocean–Atmosphere–Land System Model
中文摘要	Based on historical runs, one of the core experiments of the fifth phase of the Coupled Model Intercomparison Project(CMIP5), the snow depth(SD) and snow cover fraction(SCF) simulated by two versions of the Flexible Global Ocean– Atmosphere–Land System(FGOALS) model, Grid-point Version 2(g2) and Spectral Version 2(s2), were validated against observational data. The results revealed that the spatial pattern of SD and SCF over the Northern Hemisphere(NH) are simulated well by both models, except over the Tibetan Plateau, with the average spatial correlation coefficient over all months being around 0.7 and 0.8 for SD and SCF, respectively. Although the onset of snow accumulation is captured well by the two models in terms of the annual cycle of SD and SCF, g2 overestimates SD/SCF over most mid- and high-latitude areas of the NH. Analysis showed that g2 produces lower temperatures than s2 because it considers the indirect effects of aerosols in its atmospheric component, which is the primary driver for the SD/SCF difference between the two models. In addition, both models simulate the significant decreasing trend of SCF well over(30°–70°N) in winter during the period 1971–94. However, as g2 has a weak response to an increase in the concentration of CO2and lower climate sensitivity, it presents weaker interannual variation compared to s2.; Based on historical runs, one of the core experiments of the fifth phase of the Coupled Model Intercomparison Project(CMIP5), the snow depth(SD) and snow cover fraction(SCF) simulated by two versions of the Flexible Global Ocean– Atmosphere–Land System(FGOALS) model, Grid-point Version 2(g2) and Spectral Version 2(s2), were validated against observational data. The results revealed that the spatial pattern of SD and SCF over the Northern Hemisphere(NH) are simulated well by both models, except over the Tibetan Plateau, with the average spatial correlation coefficient over all months being around 0.7 and 0.8 for SD and SCF, respectively. Although the onset of snow accumulation is captured well by the two models in terms of the annual cycle of SD and SCF, g2 overestimates SD/SCF over most mid- and high-latitude areas of the NH. Analysis showed that g2 produces lower temperatures than s2 because it considers the indirect effects of aerosols in its atmospheric component, which is the primary driver for the SD/SCF difference between the two models. In addition, both models simulate the significant decreasing trend of SCF well over(30°–70°N) in winter during the period 1971–94. However, as g2 has a weak response to an increase in the concentration of CO2and lower climate sensitivity, it presents weaker interannual variation compared to s2.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/142396]
专题	清华大学
推荐引用方式 GB/T 7714	XIA Kun,WANG Bin,LI Lijuan,et al. Evaluation of Snow Depth and Snow Cover Fraction Simulated by Two Versions of the Flexible Global Ocean–Atmosphere–Land System Model[J],2016, 2016.
APA	XIA Kun.,WANG Bin.,LI Lijuan.,SHEN Si.,HUANG Wenyu.,...&LIU Li.(2016).Evaluation of Snow Depth and Snow Cover Fraction Simulated by Two Versions of the Flexible Global Ocean–Atmosphere–Land System Model..
MLA	XIA Kun,et al."Evaluation of Snow Depth and Snow Cover Fraction Simulated by Two Versions of the Flexible Global Ocean–Atmosphere–Land System Model".(2016).

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