气候变化领域集成服务门户(CCPortal): Sensitivity of the Greenland surface mass and energy balance to uncertainties in key model parameters

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DOI	10.5194/tc-15-2917-2021
	Sensitivity of the Greenland surface mass and energy balance to uncertainties in key model parameters
	Zolles T.; Born A.
发表日期	2021
ISSN	19940416
起始页码	2917
结束页码	2938
卷号	15 期号:6
英文摘要	We investigate the sensitivity of a distributed glacier surface mass and energy balance model using a variance-based analysis, for two distinct periods of the last glacial cycle: the present day (PD) and the Last Glacial Maximum (LGM). The results can be summarized in three major findings: the sensitivity towards individual model parameters and parameterizations is as variable in space as it is in time. The model is most sensitive to uncertainty related to atmospheric emissivity and the down-welling longwave radiation. While the turbulent latent heat flux has a sizable contribution to the surface mass balance uncertainty in central Greenland today, it dominates over the entire ice sheet during the cold climate of the LGM, in spite of its low impact on the overall surface mass balance of the Greenland ice sheet in the modern climate. We conclude that quantifying the model sensitivity is very helpful for tuning free model parameters because it clarifies the relative importance of individual parameters and highlights interactions between them that need to be considered. © Author(s) 2021.
语种	英语
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/202461
作者单位	Department of Earth Science, University of Bergen, Bergen, Norway; Bjerknes Centre for Climate Research, Bergen, Norway
推荐引用方式 GB/T 7714	Zolles T.,Born A.. Sensitivity of the Greenland surface mass and energy balance to uncertainties in key model parameters[J],2021,15(6).
APA	Zolles T.,&Born A..(2021).Sensitivity of the Greenland surface mass and energy balance to uncertainties in key model parameters.Cryosphere,15(6).
MLA	Zolles T.,et al."Sensitivity of the Greenland surface mass and energy balance to uncertainties in key model parameters".Cryosphere 15.6(2021).