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大气科学  2003 

污染源、气象条件变化对我国SO2浓度及硫沉降量分布的影响

DOI: 10.3878/j.issn.1006-9895.2003.05.15

Keywords: 硫氧化物,污染源,气象条件,相对变化率

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Abstract:

用三维欧拉型污染物长距离输送模式,模拟了中国大陆SOx的分布,并采用不同时期(1975、1980、1987年)的污染源与气象场资料,分析了污染源与气象条件变化对SOx分布产生的影响.研究表明,在该期间中国SOx污染比较严重的地区,气象条件变化导致SO2浓度和硫沉降量的相对变化通常在20%左右;污染源对SO2浓度与硫沉降量的作用通常大于气象条件,污染源变化产生的SO2浓度与硫沉降量的相对变化率为气象条件变化的几倍,甚至1~2个量级,尤其SOx污染比较严重的地区更为明显;但对西北及青藏高原地区,在源排放量变化不大,而气象条件变化较显著时,气象条件的作用通常大于排放源的影响.

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