| 大气污染物对流垂直输送作用的探讨 |
| 摘要点击 1116 全文点击 1499 投稿时间：1997-09-22 |
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| 中文关键词 垂直输送 硫沉降模式 参数化 硫污染物 输送通量 |
| 英文关键词 vertical transport sulfur deposition model parameterization sulfur pollutants transport flux |
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| 中文摘要 |
| 利用一个欧拉型硫沉降模式探讨了积云对硫污染物的对流垂直输送作用。结果表明,积云引起的垂直气流是造成大气污染物浓度分布及输送通量变化的重要因素。对流垂直输送可使硫污染物在高层出现大浓度区,浓度的增加率为50%-400%,中层和低层的浓度相应也有所变化。积云区内南北剖面上的通量也因对流输送作用在高层出现了大值中心。 |
| 英文摘要 |
| The roles of vertical transport of air pollutants by cumulus clouds was discussed using a Eulerian sulfur deposition model.The results indicated that the vertical transport by convective updrafts and downdrafts in cumulus clouds is an important factor that changes the distribution and transport fluxes of SO2 and SO42-.In upper model layer,because of the vertical transport by cumulus clouds the concentrations of SO2 increase by 50%—400% and high value centers of transport fluxes through a north-south section appear. |
