摘要
本文研究了在Y方向无限伸展的斜坡上冷迳流的形成和特征。在一般的条件下,通过数值求解大气运动方程、连续方程、热力学方程和地表热量平衡方程、土壤热传导方程,得出了冷迳流的时空变化规律;并试验了不同土壤热力特性、热含量、云量、湍流交换强度、斜坡的坡度和长度下冷通流的变化。计算的结果与观测数据相比较,基本是符合的。
The formulation and characteristics of cold-air drainage are studied in this paper.The terrain is considered as an ideal two dimensional slope with infinitely extended in Y-direction.At general situation,the varied regulary of cold-air drainage is obtained through solved numerically the atmospheric movement equations,the thermodynamic equation,the surface thermal balance equation and the heat conducted in the soil equation.Finally we test the variety of cold-air drainage with the amount of cloud,the coefficience of turbulent exchange,the angle and the length of the slope,the heat flux in the soil and the thermal characteristics of the soil.
作者
王浩
傅抱璞
Wang Hao;Fu Baopu(Department of Atmospheric Sciences,Nanjing University)
出处
《气象学报》
1988年第4期469-476,共8页
Acta Meteorologica Sinica
基金
中国科学院科学基金资助课题。
