Abstract
In order to understand the influence of anthropogenic aerosols on radiation in the urban boundary layer, we measured atmospheric aerosol mass concentrations (PM10 and PM2.5), integrated solar radiation, wind and temperature at different layers of a 325-m iron tower. A typical heavy haze process occurring during the period of October 2004 was analyzed. It is observed that the inversion layer and the weak wind was the most important factor causing the accumulation of pollutants. The results show that the PM10 concentrations under polluted day conditions is about 84 times (537.1μgm−3) higher than those on clear weather conditions (6.4μgm−3). The difference in the solar radiation between 2m and 280m became smaller (93.07 Wm−2 to 16.07 Wm−2) when pollution turned heavy, while the attenuations rate changed large (16.76% to 20.96%)
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