气候变化领域集成服务门户(CCPortal): Impacts of snow and organic soils parameterization on northern Eurasian soil temperature profiles simulated by the ISBA land surface model

CCPortal

DOI	10.5194/tc-10-853-2016
	Impacts of snow and organic soils parameterization on northern Eurasian soil temperature profiles simulated by the ISBA land surface model
	Decharme B.; Brun E.; Boone A.; Delire C.; Le Moigne P.; Morin S.
发表日期	2016
ISSN	19940416
卷号	10 期号:2
英文摘要	In this study we analyzed how an improved representation of snowpack processes and soil properties in the multilayer snow and soil schemes of the Interaction Soil-Biosphere-Atmosphere (ISBA) land surface model impacts the simulation of soil temperature profiles over northern Eurasian regions. For this purpose, we refine ISBA's snow layering algorithm and propose a parameterization of snow albedo and snow compaction/densification adapted from the detailed Crocus snowpack model. We also include a dependency on soil organic carbon content for ISBA's hydraulic and thermal soil properties. First, changes in the snowpack parameterization are evaluated against snow depth, snow water equivalent, surface albedo, and soil temperature at a 10ĝ€-cm depth observed at the Col de Porte field site in the French Alps. Next, the new model version including all of the changes is used over northern Eurasia to evaluate the model's ability to simulate the snow depth, the soil temperature profile, and the permafrost characteristics. The results confirm that an adequate simulation of snow layering and snow compaction/densification significantly impacts the snowpack characteristics and the soil temperature profile during winter, while the impact of the more accurate snow albedo computation is dominant during the spring. In summer, the accounting for the effect of soil organic carbon on hydraulic and thermal soil properties improves the simulation of the soil temperature profile. Finally, the results confirm that this last process strongly influences the simulation of the permafrost active layer thickness and its spatial distribution. © Author(s) 2016.
学科领域	Crocus
语种	英语
scopus关键词	Crocus
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/119657
作者单位	GAME-CNRM - UMR3589, CNRS, Météo-France, Toulouse, France; CEN, GAME-CNRM, UMR3589, CNRS, Météo-France, Grenoble, France; ONERC, Ministry of Ecology, Paris, France
推荐引用方式 GB/T 7714	Decharme B.,Brun E.,Boone A.,et al. Impacts of snow and organic soils parameterization on northern Eurasian soil temperature profiles simulated by the ISBA land surface model[J],2016,10(2).
APA	Decharme B.,Brun E.,Boone A.,Delire C.,Le Moigne P.,&Morin S..(2016).Impacts of snow and organic soils parameterization on northern Eurasian soil temperature profiles simulated by the ISBA land surface model.Cryosphere,10(2).
MLA	Decharme B.,et al."Impacts of snow and organic soils parameterization on northern Eurasian soil temperature profiles simulated by the ISBA land surface model".Cryosphere 10.2(2016).