摘要
本文给出了南北向坡面最热坡度的解析模式。（１）在北半球（下同），冬半年南坡存在最热坡度，且随纬度升高而增大，接近极夜时趋于９０°。（２）夏半年，存在两个临界纬度当时，南坡有最热坡度；当或时，北坡出现最热坡度。给出了和的解析式，证明分别是全球水平面上日辐射量最大值和最小值所在的纬度，它们仅依赖于赤纬。（３）最热坡度所在坡面获得的日辐射量，冬半年低纬大于高纬；夏半年低纬北坡随纬度递增，南坡时等于处水平面上日辐射量，极昼区内，北坡等于极点水平面的日辐射量。
The analytic models of warmest slope(WS) facing south or north calculated according to the solar radiation received during any given day are proposed in this study. North hemisphere is taken as an example.1. In the half year of winter,WS exists for south slope,and increases with latitude.2. In the half year of summer, there are two threshold latitudes: ψ(≤43. 3°)and ψ02(≥63. 5°N): when ψ>ψ01, WS exists for south slope,when ψ<ψ01 or ψ>ψ02,WS exists for north slope.3. The daily solar radiation on the slope with WS decreases with the latitude in the half year of winter. In the half year of summer ,it increases with latitude on the north slope when ψ<ψ01. It is equal to the value of horizontal surface at ψ01 on south slope when ψ>ψ01.
出处
《地理学报》
CSSCI
CSCD
北大核心
1994年第6期526-532,共7页
Acta Geographica Sinica
