【摘 要】
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The data utilized in this analysis consisted of extraterrestrial radiation, global radiation,diffuse radiation, direct radiation, total cloud cover and relative
【机 构】
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Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China
论文部分内容阅读
The data utilized in this analysis consisted of extraterrestrial radiation, global radiation,diffuse radiation, direct radiation, total cloud cover and relative sunshine. The annual variations andtrend were analyzed for monthly mean daily total global, direct, and diffuse radiation on a horizontalsurface and for the relations between global, direct, diffuse radiation and relative sunshine, total cloudcover. The climatological calculation equations of global and direct radiation are put forward. Theresults show that global and direct radiations are characterized by decrease and diffuse radiation byincrease. The main causes are due to the increase of concentration of suspended particles andatmospheric turbidifies rather than cloud cover variations.
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