Intraseasonal variation in the thermoinsulation effect of snow cover on soil temperatures and energy balance

被引:51
作者
Sokratov, SA
Barry, RG
机构
[1] Moscow MV Lomonosov State Univ, Fac Geog, Moscow, Russia
[2] Russian Acad Sci, Inst Geog, Moscow 109017, Russia
[3] Univ Colorado, Natl Snow & Ice Data Ctr, Boulder, CO 80309 USA
[4] Univ Colorado, World Data Ctr Glaciol, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA
关键词
climate change; climate variability; snow cover; frozen soil; surface energy balance; Alaska;
D O I
10.1029/2001JD000489
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
[1] We present the results of an analysis of the observed variation in the energy balance of a soil surface at Barrow, Alaska, during 1993-1998. When combined with snow depth measurements, the data allow several stages to be distinguished in the intraseasonal variation of the snow cover effect on the temperature regime and energy balance of the underlying soil. Each stage corresponds to specific thermoinsulation effects of the snow cover in terms of the energy-balance dependence of the soil-surface on snow depth. Stages in the intraseasonal surface energy balance variation can be used as a basis for incorporating detailed snow physics in modeling of the soil freezing/thawing phenomenon and for consideration of the distributed energy balance of snow covered landscapes. Preliminary ideas are presented on applying the results obtained for nonpermafrost regions.
引用
收藏
页码:13 / 1
页数:6
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