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Position: Home > Articles > Calculation Method of Sunshine Hours under Undulating Terrain Journal of Anhui Agricultural Sciences 2009,37 (7) 3173-3174

起伏地形日照时数的计算方法

作  者:
张国林;梁群
单  位:
辽宁省朝阳市气象局
关键词:
起伏地形;日照时数;太阳视轨道方程;户子沟
摘  要:
[目的]研究计算起伏地形日照时数的方法,为农业作物布局、日光温室设计服务。[方法]选择户子沟为试验点,实地测量周围起伏地形的仰角、方位角、时角等,绘制太阳视轨道图,应用太阳视轨道方程,计算出晨蔽、昏蔽太阳高度角,进而计算出日照时数。[结果]在周边起伏地形的影响下,4~9月户子沟日照时数为1 069.3 h,仅为平地的71.3%。[结论]应用太阳视轨道方程计算起伏地形的日照时数可提高光能利用率,为农业生产服务。
译  名:
Calculation Method of Sunshine Hours under Undulating Terrain
作  者:
ZHANG Guo-lin et al(Meteorological Bureau of Chaoyang City,Chaoyang,Liaoning 122000)
关键词:
Undulating terrain;Sunshine hours;Solar visual orbit equation;Huzigou
摘  要:
[Objective] The research aimed to study the calculation methods of sunshine hours under undulating terrain and service for the layout of agricultural crops and the solar greenhouse design.[Method] Choosing Huzigou as the experimental site,the elevation,azimuth,hour angle and so on of the surrounding undulating terrain was measured.The solar visual orbit map was developed and the solar visual orbit equation was applied to calculate the solar elevation angle of morning shelter and dark shelter and the sunshine hours.[Result] Under the influences of the surrounding undulating terrain,the sunshine hours of Huzigou from April to September was 1 069.3 h,being 71.3% of the ground.[Conclusion] Calculating the sunshine hours by applying the solar visual orbit equation could enhance the solar energy use efficiency and service for the agricultural production.

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