| 2014年春季山东省PM2.5跨界输送研究 |
| 摘要点击 3745 全文点击 1420 投稿时间：2015-01-31 修订日期：2015-03-10 |
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| 中文关键词 CAMx模式 PM2.5 传输矩阵 山东省 |
| 英文关键词 CAMx model PM2.5 transport matrix Shandong Province |
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| 中文摘要 |
| 利用CAMx模式模拟了2014年春季(3~5月)山东省ρ(PM2.5)浓度空间分布、输送、沉降特征并建立了各市PM2.5跨界输送矩阵.结果表明,山东省ρ(PM2.5)分布呈现明显的空间差异特征,鲁西地区浓度较高,半岛地区浓度较低; 垂直方向上ρ(PM2.5)主要集中在2000 m以下.全省ρ(PM2.5)水平输送通量平均达110 μg ·(m2 ·s)-1,全省总沉降量为23.05×104 t.全省近地面ρ(PM2.5)外来输送贡献率为21.08%±3.83%,各市外来输送贡献率平均为40.45%±5.96%; 随着高度的升高,京津冀、背景及边界等条件对山东省ρ(PM2.5)的贡献率明显上升,分别上升了7.56%、6.18%. |
| 英文摘要 |
| In this paper, spatial and temporal distribution, transportation and deposition of PM2.5 in Shandong Province in Spring, 2014 were all analyzed by applying PSAT of CAMx model and we also developed a transport matrix of PM2.5 between different cities in Shandong. The results showed that ρ(PM2.5) presented obvious spatial distribution characteristics; ρ(PM2.5) was higher in the western part compared to that in peninsula and ρ(PM2.5) was mainly concentrated below 2000 m in vertical direction. Simulated horizontal transport flux of PM2.5 was up to 110 μg ·(m2 ·s)-1 and the total deposition amount of PM2.5 was 23.05×104 t in Shandong during Spring, 2014. Analysis of regional contribution found that the pollutants mainly came from local districts and the average external transport contribution to the whole Shandong province was about 21.08%±3.83% while it was 40.45%±5.96% between different cities; the contribution rates of Jinjinji distrcit, background and boundary conditions gradually increased by 7.56% and 6.18% respectively as the altitude increased. |
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