›› 1987, Vol. 7 ›› Issue (1): 83-91.

• 特区地理 • 上一篇    下一篇



  1. 广州地理研究所
  • 出版日期:1987-01-30 发布日期:1987-01-30


Liang Guozhao   

  1. Guangzhou Institute of Geography
  • Online:1987-01-30 Published:1987-01-30

摘要: 坡面(包括墙面)的日照与太阳辐射状况的研究,对于农业、建筑业、太阳能利用等方面,都有十分重要的意义。国内外许多学者曾在这一方面做过不少研究工作。太阳辐射的观测,通常是在水平面上进行的。倾斜面上的辐射,一般可根据水平面的辐射资料计算得出。华南地区坡面太阳辐射状况的研究,迄今为此,还进行得不多。随着山区开发利用的加速进行,太阳能利用之日益被重视,城市高层建筑的迅速发展,对倾斜面的太阳辐射资料的需求就比较迫切。

Abstract: Liu and Jordan's formulae (Liu and Jordan, 1962) are revised to estimate the global rediation on inclined surfaces with azimuth from-180° to +180° in Shenzhen. The method for determination of the sunrise and sunset hour angles and the sunshine duration on sloping surfaces in low latitudes is discussed. From the data of direct, diffuse and global radiation on the horizontal surface in the city, the values of Rb and R for each month are calculated, where Rb and R are the ratioes of the average direct and global radiation, respectively, on the tilted surfaces to that on a horizontal surface. It is shown that in some periods of the year, the surfaces toward south, southeast and southwest, within a certain slope range, can obtain more global radiation than the horizontal surface. The annual global radiation on a southward slope of 19° reaches a maximum,3.4% more than that on a horizontal. Since Shenzhen is situated south to the Tropic of cancer, in about 15 days before and after the Summer Solstice, the global radiation on a northward inclined surface is more than that on a southward one at same slope. The annual course of global radiation on a tilted surface differs from that on a horizontal and varies with slope and azimuth.