globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2017MS001100
Scopus记录号: 2-s2.0-85040551967
论文题名:
Physically Accurate Soil Freeze-Thaw Processes in a Global Land Surface Scheme
作者: Cuntz M; , Haverd V
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2018
卷: 10, 期:1
起始页码: 54
结束页码: 77
语种: 英语
英文关键词: Cables ; Earth (planet) ; Energy balance ; Freezing ; Permafrost ; Snow ; Snow melting systems ; Soil mechanics ; Soils ; Surface measurement ; Thawing ; Energy and water balance ; Freeze/thaw ; Laboratory experiments ; Quantitative comparison ; Satellite-derived observations ; Snow water equivalent ; Temporal and spatial scale ; Theoretical formulation ; Climate models ; accuracy assessment ; energy balance ; experimental study ; freeze-thaw cycle ; land surface ; litter ; Northern Hemisphere ; observational method ; permafrost ; satellite data ; snow cover ; soil water ; spatiotemporal analysis ; Australia
英文摘要: The model Soil-Litter-Iso (SLI) calculates coupled heat and water transport in soil. It was recently implemented into the Australian land surface model CABLE, which is the land component of the Australian Community Climate and Earth System Simulator (ACCESS). Here we extended SLI to include accurate freeze-thaw processes in the soil and snow. SLI provides thence an implicit solution of the energy and water balances of soil and snow as a standalone model and within CABLE. The enhanced SLI was tested extensively against theoretical formulations, laboratory experiments, field data, and satellite retrievals. The model performed well for all experiments at wide-ranging temporal and spatial scales. SLI melts snow faster at the end of the cold season compared to observations though because there is no subgrid variability within SLI given by the implicit, coupled solution of energy and water. Combined CABLE-SLI shows very realistic dynamics and extent of permafrost on the Northern hemisphere. It illustrated, however, also the limits of possible comparisons between large-scale land surface models and local permafrost observations. CABLE-SLI exhibits the same patterns of snow depth and snow water equivalent on the Northern hemisphere compared to satellite-derived observations but quantitative comparisons depend largely on the given meteorological input fields. Further extension of CABLE-SLI with depth-dependence of soil carbon will allow realistic projections of the development of permafrost and frozen carbon stocks in a changing climate. © 2017. The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75668
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: INRA, Université de Lorraine, UMR1137 Ecologie et Ecophysiologie Forestières, Champenoux, France; Department Computational Hydrosystems, UFZ – Helmholtz Centre for Environmental Research, Leipzig, Germany; CSIRO Oceans and Atmosphere, Canberra, ACT, Australia

Recommended Citation:
Cuntz M,, Haverd V. Physically Accurate Soil Freeze-Thaw Processes in a Global Land Surface Scheme[J]. Journal of Advances in Modeling Earth Systems,2018-01-01,10(1)
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