Numerical simulation of the interaction processes between snow cover and alpine permafrost
Numerical simulation of the interaction processes between snow cover and alpine permafrost
复制标题
积雪与高山多年冻土相互作用过程的数值模拟
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
W. Haeberli
中科院分区：
文献类型：
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作者：
M. Luetschg;P. Bartelt;M. Lehning;Veronik A. Stoeckli;W. Haeberli
多年冻土的发生在很大程度上取决于大气、地形和土壤的特定因素，如年平均气温、太阳辐射、积雪和土壤质地。为了更好地了解积雪-永久冻土系统中这些单独因素之间的相互联系，开发了一个数值模型：一维模型SNOWPACK，它模拟了瑞士自动积雪和气象站（IMIS）的当地积雪，通过包括特定的土壤特征，将其扩展到下层土壤。这个新模型的土壤特定参数是用实验室测量校准的。模拟了土壤粒度对温度变化的影响。对年平均气温升高对年平均土壤表面温度影响的长期模拟显示出强烈的线性依赖性和土壤特异性敏感性。本文给出了新模型的标定和初步仿真结果。永久冻土，菲利普斯，斯普林曼和阿伦森（编）©2003 Swets & Zeitlinger, Lisse, ISBN 90 5809 582 7
The occurrence of permafrost strongly depends on atmospherical, topographical and soil specific factors such as mean annual air temperature, solar radiation, snow cover and soil texture. For a better understanding of the interconnection between these individual factors in the snow cover – permafrost system, a numerical model was developed: the one-dimensional model SNOWPACK, which simulates the local snow cover from the Swiss Automatic Snow and Weather Stations (IMIS), was extended to the underlying soil by including specific soil characteristics. The soil-specific parameters of this new model were calibrated with laboratory measurements. Simulations concerning the influence of soil grain-size on temperature development were conducted. A long-term simulation of the influence of increasing mean annual air temperatures on mean annual soil-surface temperatures shows both a strong linear dependency and soil-specific sensitivity. In this paper, the calibration of the new model and the first simulation results are presented. Permafrost, Phillips, Springman & Arenson (eds) © 2003 Swets & Zeitlinger, Lisse, ISBN 90 5809 582 7