珠江三角洲区域空气质量的时空变化特征  

Distribution Characteristics of Regional Air Quality in the Pearl River Delta

作　　者：吴蒙[1] 彭慧萍[1] 范绍佳[1] 吴兑[1,2] 

机构地区：[1]中山大学环境科学与工程学院,广东广州510275 [2]暨南大学大气环境安全与污染控制研究所,广东广州510632

出　　处：《环境科学与技术》2015年第2期77-82,共6页Environmental Science & Technology

基　　金：国家"973"项目(2011CB403403);国家自然科学基金项目资助(41275017);高等学校博士学科点专项科研基金项目(20120171110028);中山大学高校基本科研业务费专项项目资金(13lgjc09)

摘　　要：利用2006-2012年粤港区域空气质量监控网的区域空气质量指数(RAQI)资料和珠江三角洲地区(珠三角地区)同期的地面气象资料,研究了珠三角地区RAQI时空分布特征,还结合相关性分析和风场分析等方法探讨了珠江三角洲不同城市之间污染物输送的影响。结果表明:珠江三角洲大部分城市区域空气质量近年来呈现出显著的改善趋势,但是广州、佛山和东莞的污染日数,依然保持在较高的水平;污染物输送在不同城市之间影响非常显著,下风向地区易受上风向地区污染物输送影响,尤其肇庆、中山、江门和惠州受上风向影响非常显著,佛山和东莞则影响不显著;珠三角造成污染天气的天气形势中,高压脊控制型和高压底部型较多,槽前脊后型等其他类型则相对较少。Based on the observational data of Regional Air Quality Index （RAQ/） of regional air quality monitoring network in Guangdong and Hong Kong and the surface meteorological data in Pearl River Delta （PRD） during 2006-2012, the distribution characteristics of RAQ1 have been studied, and the influence of transport between different cities have also been researched by correlation analysis and wind field. It is found that the air quality in most place of PRD had significant improvement, but Foshan and Dongguan had little change, the air quality was still quite poor. In PRD, the influence of transport among different cities is very important. The area in the downwind has always affected by the pollutants which transported from the area in the upwind, especially in Zhaoqing, Zhongshan, Jiangmen and Huizhou the influence of upwind transport is very significant, by contrast, in Foshan and Dongguan the influence is quite weak. Among the weather patterns associate with poor air quality in PRD, high-pressure ridge and high-pressure bottom are the major patterns, and the other weather patterns, such as in the front of the trough and the back of the ridge, are relatively few.

关 键 词：区域空气质量 城市间输送 天气形势 珠江三角洲 

分 类 号：X51[环境科学与工程—环境工程]