对太阳辐射和城市空气污染变化关系的探讨

对兰州市太阳辐射和空气污染的年季变化规律分析表明：太阳直接辐射、总辐射及大气透明系数呈逐年下降趋势，散射辐射和晴天大气混浊因子呈逐年增加趋势，且从７０年代后期开始这种趋势更加明显；冬季大气污染最严重，夏季较其他季节轻，春季污染高于秋季。总悬浮微粒的年、季变化与太阳辐射和混浊因子的变化规律基本一致

THE DISCUSSION ON THE CHANGING RELATION BETWEENTHE SOALR REDIATION AND THE ATMOSPHERIC POLLUTION INLANZHOU

This paper has made an analysis on the yearly variation patterns in the solar radiation and the seasons of the atmospheric pollution in Lanzhou. The results show: the direct solar radiation, the global radiation and the coefficient of air transparency are on the decline each year while the scattering radiation and turbidity factors are on the rise which has been getting more obvious since late 1970s; the air pollution is the gravest in winter and the lowest in summer while that in spring is more serious than in autumn. The yearly change of the total suspended particles and the changes of seasons generally conform to the variation patterns in the solar radiation and the turbidity factors.