利用中国科学院大气物理研究所北京325 m气象塔气象要素和污染物浓度观测资料，采用气体干沉降阻力模型，对奥运会前后北京行政区内SO2和NO2的干沉降影响因子、干沉降速率、干沉降通量进行数值模拟。结果表明：1）随着大气稳定度、太阳辐射强度和下垫面类型的改变，北京SO2和NO2的干沉降速率有明显变化，表面阻力是影响气体干沉降速率变化的主要因子。2）SO2和NO2在白天的干沉降速率及通量普遍大于夜晚。3）静稳天气条件下,奥运会前北京地区一天可清除24 t SO2和55.2 t NO2，奥运会期间一天可清除10.8 t SO2和50.4 t NO2，这说明北京及周边地区的减排措施对改善奥运会期间的空气质量效果显著。
With the meteorological and contaminated information from Beijing 325m meteorological tower in the Institute of Atmospheric Physics, Chinese Academy of Sciences, and the gas dry deposition resistance model, the influencing factors of the dry deposition，the dry deposition rate，and the dry deposition flux in Beijing before and during the Beijing Olympic Games were calculated. The results show: 1）With the variations of the stability，the solar radiation intensity，and the style of the surface, the SO2 and NO2 dry deposition rates change obviously, and the apparent resistance is the main factor impacting the dry deposition rate. 2）The dry deposition rate and flux during the daytime are greater than those during the nighttime. 3）The dry deposition can remove 24 t SO2 and 55.2 t NO2 in Beijing area in one day before the Beijing Olympic Games, and can remove 10.8 t SO2 and 50.4 t NO2 in one day during the Beijing Olympic Games. This means that the emission reduction measures taken by the Chinese government during the Olympic Games have had a significant effect.
苏航,王自发,朱彬,银燕.2010.北京奥运会前后静稳天气条件下SO2和NO2干沉降模拟[J].气候与环境研究,15(5):636-642. SU Hang, WANG Zifa, ZHU Bin, YIN Yan.2010. Numerical Simulation of the SO2 and NO2 Dry Deposition in Beijing under Stagnant Weather Conditions during the Beijing Olympic Games Period[J]. Climatic and Environmental Research (in Chinese],15(5):636-642.复制