Abstract:The Models-3/CMAQ modeling system was applied to simulate the PM10 pollution over the Pearl River Delta (PRD) region during the second half of the November 2009. Integrated process rates (IPR) analysis was used to investigate the influences of various atmospheric processes on the evolution of ambient PM10 during the serious PM10 episode of 23~29 November. Based on the results at four representative sites, near-ground PM10 levels increased mainly due to local emissions (e.g., the PM10 concentrations at Luhu and Kaiping) and transport processes (e.g., at Wanqingsha and Jinguowan), but decreased by horizontal and vertical export (e.g., at Luhu and Kaiping), dry deposition (at Wanqingsha) and aerosol processes (at Jinguowan). The central PRD was characterized by intensive emissions, strong PM10 export and highly dry deposition of PM10. To near-ground PM10, aerosol processes showed negative contribution in the central PRD, but positive contribution over the western and southern PRD. To the PM10 in upper atmosphere, aerosol processes exhibited positive contributions over almost the entire PRD, especially with high secondary aerosol production in the central PRD.
刘宁, 王雪松, 胡泳涛, 郑君瑜, 钟流举, 胡敏, 张远航. 珠江三角洲秋季PM10污染模拟与形成过程分析[J]. 中国环境科学, 2012, 32(9): 1537-1545.
LIU Ning, WANG Xue-Song, HU Yong-Tao, ZHENG Jun-Yu, ZHONG Liu-Ju, HU Min, ZHANG Yuan-Hang. Numerical simulation and process analysis of PM10 pollution over the Pearl River Delta in autumn. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(9): 1537-1545.