DOI: 10.5194/tc-10-853-2016
Scopus记录号: 2-s2.0-84964940601
论文题名: Impacts of snow and organic soils parameterization on northern Eurasian soil temperature profiles simulated by the ISBA land surface model
作者: Decharme B ; , Brun E ; , Boone A ; , Delire C ; , Le Moigne P ; , Morin S
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 2 起始页码: 853
结束页码: 877
语种: 英语
英文关键词: Crocus
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75153
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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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
Recommended Citation:
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]. Cryosphere,2016-01-01,10(2)