• 关键词：硫沉降  统计模式

• 基金项目：

• 毛节泰
• 北京大学地球物理系

• 摘要：介绍了两广地区酸沉降模式,该模式的基础是定常欧拉型酸沉降模式,其中包括硫污染物的人工排放源,扩散输送,化学转化和干湿沉降,对全年120天气象资料进行计算和平均以后,得到广东、广西地区硫沉降的基本图象.从模式计算的结果可以看出,在目前低空排放（排放源在300m以下）的条件下,城市污染源排放的硫污染物的输送范围约10²km量级、污染物的浓度及干湿沉降量都有显著的非均匀分布.

• Abstract：A statistic model is developed to estimate the sulfur deposition in Guangdong and Guangxi Provinces. This model is based on balance Eularian model and has parameters including diffusion, transformation and dry/wet deposition. With data input of sulphur dioxide and sulphate emission and meteorological parameters, the annual mean concentration and deposition of the pollutants are evaluated statistically. According to the model calculation, the pollutant transport is localized in this area and the deposition of sulphur is quite uneven according to the distance to the emission centers.

• Key words：sulphur deposition  statistic model.

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