利用一次外场试验中两个不同高度上的太阳辐射观测资料，计算了城市烟雾层大气平均光学特性参数。
The average optical parameters of the urban smog layer over Lanzhou are calculated by using the solar observation data on the two different levels.
模型成功重现了在太阳辐射变化时，科学家已经在高层大气观测到的状况。
The model successfully reproduced what scientists have observed happening in the upper atmosphere during changes in solar radiation.
结果表明：观测结果差异的大小主要受太阳辐射和下垫面状况影响。
The results show that the difference was mainly influenced by solar radiation and the conditions of underlying surface.
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