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文中描述一个一维的积雪分层模型，目的是要刻划雪盖随季节的变化，与其下冻土变动模型一起，构成完整的雪盖模型。为了保持一定精度，并能用于大气环模式（ＧＣＭ）研究，模型对积雪内部热量及质量输送过程的描述精细程度及计算时分层多少均有所考虑。模型中，改用内能代替温度作为预报量，克服了相变时直接预报温度时造成的计算误差，有效地预报了相变过程。对于积雪密度的变化，考虑了雪花形态的破坏而引起的密度变化及由于压实过程而引起的密度变化。并对各分层自重产生压实过程推导了相应的公式，在模型中对雪盖的光学特性、热力学特性及水流流动特性参数化方案设计也进行了分析。本简化模型的模拟结果与精细积雪模型的比较，具有几乎同等的精度，与俄罗斯的Ｙｅｒ－ｓｈｏｖ站实测数据相比，吻合十分理想。
In this paper, a one-dimensional snow layer model is described in order to characterize the change of snow cover with the seasons and form a complete snow cover model together with the variations of frozen soil under it. In order to maintain a certain degree of precision and to be used in the GCM study, the model considers the detailed description of the internal heat and mass transport processes and the stratification in calculation. In the model, instead of temperature, internal energy can be used as the forecasting quantity to overcome the calculation error caused by the direct forecasting of temperature during the phase transition, which effectively predicts the phase change process. For the change of snow density, the change of density caused by the destruction of snowflake morphology and the change of density due to compaction process are considered. Corresponding formulas are deduced for the compaction process of self-weight stratification. The optical, thermodynamic characteristics and design of parameterization scheme of flow characteristics are also analyzed in the model. The simulation results of this simplified model have almost the same accuracy as the fine snow model, which is in good agreement with the measured data of Yer-shov station in Russia.