Site-level model intercomparison of high latitude and high altitude soil thermal dynamics in tundra and barren landscapes

摘要: Modeling soil thermal dynamics at high latitudes and altitudes requires representations of physical processes such as snow insulation, freezing thawing subsurface conditions like water/ice content texture. We have compared six different land models: JSBACH, ORCHIDEE, JULES, COUP, HYBRID8 LPJ-GUESS, four sites with distinct cold region landscape types, to identify the importance in capturing observed temperature soils. The include alpine, Arctic, wet polygonal tundra non-permafrost thus showing how a range models can represent regimes. For all sites, insulation is major for estimating topsoil conditions. However, physics essential subsoil active layer thicknesses. This analysis shows that need more realistic surface processes, detailed moss cover changing thickness wetness, along better dynamics.