CMAQ和CAMx对中国PM2.5模拟结果的对比分析-终稿.pdfVIP

CMAQ 与CAMx 模型对中国PM2.5 数值模拟对比分析 1 1 1,2 * 1 1 1 1 薛文博 ，付 飞 ，王金南 ，杨金田 ，雷 宇 ，汪艺梅 ，武卫玲 （1.环境保护部环境规划院， 北京，100012；2. 国家环境保护环境规划与政策模拟重点实验室，北京，100012） 摘要：为研究我国PM2.5 及其关键组分的空间分布特征，分析不同空气质量模型PM2.5 模拟结果的一致性和差异性，选取第三代空气质量 模型CMAQ 和CAMx 分别对全国1 月份PM2.5 及其关键组份进行模拟，分析了PM2.5 及其关键组分浓度的空间分布特征，对比了CMAQ 与CAMx 模型对模拟区域内所有网格点及县级以上城市模拟结果的差异性。结果表明，我国1 月份PM2.5 重污染地区主要集中在以“北京 －西安－宁波”为顶点的污染三角区、四川盆地（成渝地区）及长江中下游两湖平原 （武汉城市群和长株潭城市群）等区域，CMAQ 和 CAMx 模型对PM2.5 、硫酸盐、硝酸盐模拟结果均具有很好的空间相关性，333 个县级以上城市PM2.5 、硫酸盐、硝酸盐浓度模拟结果的 线性相关系数分别为0.979、0.870 、0.972，但CAMx 模型对PM2.5 、硫酸盐、硝酸盐的模拟结果总体上大于CMAQ，CMAx 相比CMAQ 模型对333 个县级以上城市PM2.5 、硫酸盐、硝酸盐的模拟结果分别偏高16.50%、45.67%、34.14% 。 关键字：CMAQ；CAMx；PM2.5 ；硫酸盐；硝酸盐 中图分类号：文献标志码：A 文章编号： Comparison of PM2.5 Simulation between CMAQ and CAMx Model over China. XUE Wenbo, FU Fei, WANG Jinnan, YANG Jintian, LEI Yu, WANG Yimei, WU Weiling (1.The Atmospheric Environment Department, Chinese Academy for Environmental Planning, Beijing, 100012, China; 2. State Key Laboratory of Environmental Planning and Policy Simulation, Chinese Academy for Environmental Planning, Beijing, 100012, China) Abstract ：To study the spatial distribution characteristics of PM2.5 and its key components, as well as analyzing the consistency and differentiation between different model simulations, PM2.5and its key components simulation were carried out by the third generation air quality models CMAQ and CAMx respectively, spatial distribution characteristics of PM2.5and its key components were analyzed, and statistic analysis were carried out on simulated concentrations of all grid cells and cities above the country level. The results indicate that PM2.5pollution in China is centered around the triangle area consisting of three vertices of “Beijing －Xi’an －Hangzhou”, the Chengdu-Chongqing area in Sichuan Basin along with the Wuhan a