Acta Geographica Sinica ›› 1994, Vol. 49 ›› Issue (6): 526-532.doi: 10.11821/xb199406006

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ANALYTIC MODELS FOR WARMEST SLOPE CALCULATED ACCORDING TO THE DAILY SOLAR RADIATION AND ITS GLOBAL DISTRIBUTION

Yu Qiang, Fu Baopu, Peng Naizhi, Chen Ming   

  1. Department of Atmospheric Science,Nanjing University 210008
  • Online:1994-11-15 Published:1994-11-15

Abstract: 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: ψ01(≤43. 3°N)and ψ02(≥63. 5°N): when ψ>ψ01, WS exists for south slope,when ψ<ψ01orψ>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.

Key words: Solar vadliation, Analytic model, Global distribution