一种使用CALPUFF模式的大气环境红线划定技术
发布时间：2018-12-12 17:08
【摘要】：运用CALPUFF模式的源贡献计算功能,将关注点或区域设置成受体,计算网格化分布的虚拟点源对这些受体的浓度贡献率,从而识别出对关注点或区域影响较大的区域并将之划入大气环境红线范围内。目前常见的做法是将非均匀分布的关注点设置为受体,但这会导致红线划定结果受受体分布影响很大,增加不确定性。文章以上海地区为例,比较了非均匀分布受体和网格化均匀分布受体2种不同设置的计算结果发现受体均匀分布时,得到的红线划定结果的不确定性更低更便于进行后续分析;通过对虚拟点源排放高度进行敏感性试验,发现在受体均匀分布的情况下,排放高度的差异对红线划定结果的影响较小,进一步说明均匀分布的受体设置更具有鲁棒性(即抗变换性)。这种使用CALPUFF模式定量地计算虚拟点源对受体的贡献,从而划定大气环境红线的技术在城市环境规划方面具有广阔的应用前景。
[Abstract]:Using the source contribution calculation function of CALPUFF model, the focus or region is set up as receptors, and the concentration contribution rate of virtual point source to these receptors is calculated by grid distribution. Thus, the regions which have a great influence on the focus or region are identified and placed within the red line of the atmospheric environment. At present, the common practice is to set the attention point of non-uniform distribution as the receptor, but this will lead to the red line delineation results greatly affected by the receptor distribution, increasing uncertainty. In this paper, taking Shanghai area as an example, we compare the calculation results of two different sets of non-uniform distributed receptors and gridded uniformly distributed receptors. It is found that when the receptors are uniformly distributed, the uncertainty of the obtained red line delineation results is lower and more convenient for subsequent analysis. Based on the sensitivity test of the virtual point source emission height, it was found that the difference of emission height had little effect on the red line delineation results under the condition of uniform distribution of the receptors. It is further proved that the uniformly distributed receptors are more robust (i.e. anti-transformation). The CALPUFF model is used to quantitatively calculate the contribution of the virtual point source to the receptor, thus the technique of delineating the red line of the atmospheric environment has a broad application prospect in urban environmental planning.
【作者单位】： 上海大学环境与化学工程学院;广州市环境保护科学研究院;
【基金】：广州市环境约束条件下电源发展策略研究项目资助
【分类号】：X32;X51
本文编号：2374973
[Abstract]:Using the source contribution calculation function of CALPUFF model, the focus or region is set up as receptors, and the concentration contribution rate of virtual point source to these receptors is calculated by grid distribution. Thus, the regions which have a great influence on the focus or region are identified and placed within the red line of the atmospheric environment. At present, the common practice is to set the attention point of non-uniform distribution as the receptor, but this will lead to the red line delineation results greatly affected by the receptor distribution, increasing uncertainty. In this paper, taking Shanghai area as an example, we compare the calculation results of two different sets of non-uniform distributed receptors and gridded uniformly distributed receptors. It is found that when the receptors are uniformly distributed, the uncertainty of the obtained red line delineation results is lower and more convenient for subsequent analysis. Based on the sensitivity test of the virtual point source emission height, it was found that the difference of emission height had little effect on the red line delineation results under the condition of uniform distribution of the receptors. It is further proved that the uniformly distributed receptors are more robust (i.e. anti-transformation). The CALPUFF model is used to quantitatively calculate the contribution of the virtual point source to the receptor, thus the technique of delineating the red line of the atmospheric environment has a broad application prospect in urban environmental planning.
【作者单位】： 上海大学环境与化学工程学院;广州市环境保护科学研究院;
【基金】：广州市环境约束条件下电源发展策略研究项目资助
【分类号】：X32;X51
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