基于过程的融雪模型研发Ⅰ——原理

A Process-based Snowmelt Model Ⅰ: Principles

研究建立了基于物理过程的能量平衡融雪模型Snow Column。模型包含能量平衡、相变、水量传递、压实和粒径变化等过程,能详细刻画雪柱在消融过程中密度剖面、温度剖面和剖面液态水含量变化。选取美国洛基山脉科罗拉多Niwot实验场006号雪坑1996年4月~6月融雪观测资料验证模型,模拟结果在合理范围内。该模型可以为进一步认识雪盖对气候变化的响应提供基础。

A process-based energy balance snowmelt model--Snow Column is newly developed. The processes of energy conservation, phase change, mass transfer, compaction and growth of grain size are involved in the model. It could provide the changes of density profile, temperature profile and liquid water content profile varied with snowmeh processes. The observations during the period of April to June 1996 of Snowpit 006 in Niwot Ridge, Rocky Mountain Front Range of Colorado, USA are used to verify the model. The calculated results are approximately consistent with the observed. It will offer a better understanding of the response of snowpack to climate change.