基于地形的福建省太阳辐射模拟计算及评估

Solar Radiation in Fujian Province: Calculation and Assessment Based on DEM

取分布式模拟方法，利用福建省69个气象站1971-2007年日照资料及100m×100m分辨率的高程数据，计算了福建省范围内历年1-12月的太阳辐射量．结果表明，福建省年太阳总辐射主要在3800～5300MJ／m^2之间，年太阳直接辐射在1800～2800MJ／m^2之间；月太阳辐射介于230～590MJ／m^2之间，其中6-9月为一年中辐射较高的4个月份．太阳辐射的高值区主要位于福建东南部的莆田、泉州、厦门、漳州4市的沿海一带，年太阳总辐射超过4500MJ／m^2，年太阳直接辐射超过2100MJ／m^2．此外，受地形及地表特征的影响，位于福建北部的南平市的部分地区太阳辐射也相对较高．

Based on the DEM data of 100 m × 100 m resolution, with a full consideration of factors influencing solar radiation, a distributed model for calculating solar radiation, over rugged terrains, in Fujian province was established. The study shows that, from 1971-01 to 2007-12, annual total so- lar radiation in the province ranged from 3 800 MJ/m2 to 5 300 MJ/m2, annual direct solar radiation ranged from 1 800 to 2 800 MJ/m2, and monthly total solar radiation ranged from 230 MJ/m2 to 590 MJ/m2 with a higher value in June, July, August and September. The coastal areas, including Pu- tian, Quanzhou, Xiamen and Zhangzhou, were rich in solar radiation, where the annual total radia- tion was more than 4 500 MJ/m2 and annual direct radiation more than 2 100 MJ/m2. In other area of the province, the highest solar radiation center was Nanping.