| 大气污染物源—接受体关系的数值试验 |
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| 引用本文： | 周文贤,曾智华,邵德民.大气污染物源—接受体关系的数值试验[J].环境科学研究,1996,9(4):1-5. |
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| 作者姓名： | 周文贤 曾智华 邵德民 |
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| 作者单位： | 1.南京气象学院 南京 210044 |
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| 摘 要： | 设计了一个三维欧拉型大气污染物远距离输送的酸沉降模式。利用该模式进行数值试验,讨论污染源排放量的不同减少和背景浓度的不同变化对大气污染物酸沉降的影响。结果表明:污染源排放量和背景浓度对地面SO2气相浓度和硫酸物湿沉降的影响是非线性的,当污染源中SO2减少50%,NOx减少40%时,地面SO2气相浓度最大减少率大于50%;仅仅减少大气污染物的背景浓度,地面SO2气相浓度和硫酸物湿沉降略有减少,进一步减少污染源排放量,地面SO2气相浓度和硫酸物湿沉降明显减少。
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| 关 键 词： | 酸沉降 源减少 数值模拟 |
| 收稿时间： | 1995/7/18 0:00:00 |
Air Pollutant Numerical Experiments Between Sources and Receptors |
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| ZHOU Wenxian,ZENG Zhihua and SHAO Detain.Air Pollutant Numerical Experiments Between Sources and Receptors[J].Research of Environmental Sciences,1996,9(4):1-5. |
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| Authors: | ZHOU Wenxian ZENG Zhihua and SHAO Detain |
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| Affiliation: | 1.Nanjing Meteorological Institute, Nanjing 2100442.Shanghai Meteorological Institute, Shanghai 200030 |
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| Abstract: | The three dimensional Eulerian long-range acid deposition numerical simulation model for atmospheric pollutant transportation has been designed. With this model, a series of numerical experiments are introduced to investigate the effects of reduction of sources and background concentration on the wet deposition amount of SO42-, results of which indicate that the non-linear response of the ground-level gas-phase SO2 concentration and wet deposition amount to source emission and background concentration. Reducing SO2 emission by 50% and NOx emission by 40 % results in the maximum reduction percentage（more than 50%） of the ground-level gas-phase SO2 concentration. Only reducing the background concentration of pollutants results in relatively small reduction of the groundlevel gas-phase SO2 concentration and the wet deposition amount of SO42-, however, further reducing source emission will result in obvious reduction. |
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