对积雪表面不同乱流热经验计算式的验证

Verification of Different Empirical Formulas for the Calculation of Turbulent Heat on the Snow Surface

雪表热量平衡是诸多研究领域的基础 .乱流热是其重要组成部分 .同时 ,由于其乱流性质 ,也是最难以精确计算的部分 .在很多情况下 ,由于缺乏资料而采用经验公式 .本文利用实测资料通过 7个经验计算式进行计算 ,并将结果与实测融雪量进行对比 ,从而得出文献KUZ MIN的经验式[4 ]

Heat balance of the snow surface serves as a basis for many research areas. The turbulent heat is one of its important parts. It is very hard to calculate the turbulent heat precisely because of its turbulence. Therefore empirical formulas are adopted in many cases in which no sufficient da ta are found. This paper calculates the turbulent heat by substituting the measu red data into 7 empirical formulas separately. By comparing the calculated resul ts with the actual melting amount of the snow surface, it is found that KUZMIN S formul_ [4] has least error.