地理学报 ›› 1994, Vol. 61 ›› Issue (6): 526-532.doi: 10.11821/xb199406006

• 论文 • 上一篇    下一篇

辐射日总量的最热坡度解析模式及其全球分布规律

于强, 傅抱璞, 彭乃志, 陈明   

  1. 南京大学大气科学系, 南京 210008
  • 出版日期:1994-11-15 发布日期:1994-11-15

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

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ψ01(≤43. 3°N)、ψ02(≥63. 5°N):当 ψ>ψ01时,南坡有最热坡度;当ψ>ψ02或ψ<ψ01时,北坡出现最热坡度。给出了ψ01和ψ02的解析式,证明ψ01、ψ02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(ψ<ψ01)北坡随纬度递增,南坡(ψ>ψ01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。

关键词: 最热坡度, 天文辐射, 分布

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