抄録
To utilized solar energy, it is important to evaluate exactly insolation characteristics as yearly amounts, monthly and daily average value, include direct component in global insolation, etc.. For this purpose, the global and direct insolations measured by the author twenty two years at Kitami and measured meteorological agency from eight to twenty years in fourteen locations, such as Sapporo('78 to '97), Miyako, Matsumoto, Shionomisaki('81 to '97), Nemuro, Akita, Tateno('82 to '97), and other seven locations(Wajima etc. '90 to '97) were processed. Consequently, it was made clear that a monthly distribution pattern of the global and direct insolation for fifteen places. And hourly distributions of the direct insolation in fine days were shown. And for daily insolation of every day, it was shown average, maximum, minimum values. Furthermore, frequency distributions of daily insolation at Kitami and Sapporo were made clear.
