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Author:
Journal / Book Title:
Year:
Volume:
Issue:
shan qu ke zhao shi shu de ji suan
Author(s):
ZHANG Caixiang
Pages:
45
-
48
Year:
1982
Issue:
3
Journal:
Journal of Meteorological Research and Application
Keyword:
可照时数
;
视轨道
;
地形遮蔽
;
日没时
;
太阳高度角
;
起伏地形
;
太阳方位角
;
时角
;
向径
;
角座标
;
Abstract:
<正> 为了研究山区农业气候资源,分析光照资源的时空分布特征,在试验工作中,除在考察月各测点进行日照观测外,还运用图解法进行了测点实际可照时数的计算。 本文以灌阳山区为例说明山区可照时数的计算方法。计算起伏地形中的可照时数,实际上是一个确定起伏地形中日出和日没(一天中可能有几次)时间的问题。在一般情况下,由
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