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珠江三角洲秋季PM_(10)污染模拟与形成过程分析
引用本文: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PM_(10)污染模拟与形成过程分析[J].中国环境科学,2012,32(9):1537-1545.
作者姓名:刘宁  王雪松  胡泳涛  郑君瑜  钟流举  胡敏  张远航
作者单位:1. 北京大学环境科学与工程学院,环境模拟与污染控制国家重点联合实验室,北京100871
2. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
3. 华南理工大学环境科学与工程学院,广东广州,510006
4. 广东省环境监测中心站,广东广州,510045
基金项目:国家“863”项目(2006AA06A306);环境保护公益性行业科研专项(200909003,201009002);环境模拟与污染控制国家重点联合实验室专项经费;欧盟框架7项目(FP7/2007-2013,212095)
摘    要:利用Models-3/CMAQ模式系统对珠江三角洲2009年11月下半月的大气PM10污染状况进行模拟,重点针对23~29日期间的严重PM10污染事件,采用过程分析技术,探讨各种大气物理、化学过程对PM10浓度演变的作用规律.对代表性站点的分析结果表明,导致污染期间近地面PM10浓度升高的大气过程主要是源排放(例如麓湖、开平)和大气传输(万顷沙、金果湾),重要的PM10去除途径包括大气传输(麓湖、开平)、干沉降(万顷沙)和气溶胶过程(金果湾).空间分布上,PM10源排放强度较高的珠三角中部地区,同时也是向外输出PM10的主要区域和干沉降去除的高值地区.在近地面,气溶胶过程在珠三角中部主要起消耗PM10的作用,二次颗粒物的生成多发生在珠三角西部和南部;气溶胶过程对高空PM10主要表现为生成作用,尤其珠三角中部地区的生成速率相对更高.

关 键 词:珠江三角洲  PM10  CMAQ模式  过程分析  积分过程速率  
收稿时间:2012-01-08;

Numerical simulation and process analysis of PM10 pollution over the Pearl River Delta in autumn
LIU Ning , WANG Xue-song , HU Yong-tao , ZHENG Jun-yu , ZHONG Liu-jü , HU Min , ZHANG Yuan-hang.Numerical simulation and process analysis of PM10 pollution over the Pearl River Delta in autumn[J].China Environmental Science,2012,32(9):1537-1545.
Authors:LIU Ning  WANG Xue-song  HU Yong-tao  ZHENG Jun-yu  ZHONG Liu-jü  HU Min  ZHANG Yuan-hang
Institution:1(1.State Key Joint Laboratory of Environmental Simulation and Pollution Control,College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China;2.School of Civil and Environmental Engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA;3.College of Environmental Science and Engineering,South China University of Science and Technology,Guangzhou 510006,China;4.Guangdong Provincial Environmental Monitoring Center,Guangzhou 510045,China)
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.
Keywords:Pearl River Delta(PRD)  PM10  CMAQ model  process analysis  integrated process rate(IPR)
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