论文部分内容阅读
建立了计算ＳＯ２和硫酸盐气溶胶干沉降速度的数值模式，模式中考虑了气象条件、下垫面特征等因素对不同污染物干沉降速度的影响．并利用该模式计算了典型下垫面上ＳＯ２和ＳＯ２－４的干沉降速度，其变化范围分别为０．２—１．０ｃｍ／ｓ和０．１—０．８ｃｍ／ｓ，与文献给出的结果对比表明，该模式用于计算硫污染物的干沉降速度是可行的。最后给出了包括我国大部分地区白天和夜晚的硫污染物干沉降速度的区域分布．
A numerical model was established to calculate the dry deposition rate of SO2 and sulfate aerosols. The model considered the influence of meteorological conditions, underlying surface characteristics and other factors on the dry deposition rate of different pollutants. Using this model, the dry deposition velocities of SO2 and SO2-4 on the typical underlying surface were calculated, which ranged from 0.2 to 1.0 cm / s and 0.1 to 0.8 cm / s, respectively, The comparison of the results shows that this model is feasible to calculate the dry deposition rate of sulfur pollutants. Finally, the regional distribution of dry deposition rate of sulfur pollutants, including daytime and nighttime in most parts of China, is given.