中山大学学报自然科学版 ›› 2011, Vol. 50 ›› Issue (5): 120-127.

• 研究论文 • 上一篇    下一篇

珠三角2009年11月严重灰霾天气过程分析

吴 兑1,2,吴 晟3,陈欢欢1,廖碧婷2,邓 涛2,谭浩波2,李海燕2,陈慧忠2,范绍佳1   

  1. (1. 中山大学环境科学与工程学院大气科学系,广东 广州 510275;2. 中国气象局广州热带海洋气象研究所,广东 广州 510080;3. 香港科技大学环境学部,香港 九龙清水湾)
  • 收稿日期:2010-12-12 修回日期:1900-01-01 出版日期:2011-09-25 发布日期:2011-09-25

An Analysis of Severe Haze Process in November 2009 over the Pearl River Delta

WU Dui1,2, WU Cheng3, CHEN Huanhuan1, LIAO Biting2, DENG Tao2, TAN Haobo2, LI Haiyan2, CHEN Huizhong2, FAN Shaojia1   

  1. (1. Department of Atmospheric Science, School of Environmental Science and Engineer, Sun Yatsen University, Guangzhou 510275,China;2. Institute of Tropical and Marine Meteorology,CMA,Guangzhou 510080,China;3. Institute for the Environment,The Hong Kong University of Science and Technology,Clear Water Bay, Kowloon, Hong Kong,China)
  • Received:2010-12-12 Revised:1900-01-01 Online:2011-09-25 Published:2011-09-25

摘要: 由于经济规模迅速扩大和城市化进程加快,大气气溶胶污染日趋严重,由细粒子气溶胶造成的能见度恶化事件越来越多,这些人类活动排放的污染物,可形成灰霾天气致使能见度下降。2009年11月23-29日,在珠三角地区发生了一次典型的严重灰霾天气过程,是近10年来最严重的灰霾天气过程之一。从天气分析、流场分析、遥感分析和气溶胶物理化学特征分析,探讨了这次过程的成因,结论是这次灰霾过程具有持续时间长、范围广、强度大的特点。这次严重灰霾过程持续7 d,仅次于2004年1月3-10日持续8 d的过程;范围广,笼罩整个珠三角,多个台站出现小于1 km的低能见度事件;强度大,珠三角大气成分监测网数据,都出现多项建站以来最强值,许多指标都超过缺省预设的坐标上限,超标均以倍数计。

关键词: 珠三角, 严重灰霾, 低能见度, 空气质量

Abstract: With the rapid economy expansion and urbanization, atmospheric aerosol pollution is getting serious, which leads to a number of visibility degradation events caused by increasing fine particle aerosol. These pollutant emissions from human activities produce haze and cause low visibility. During 23-29 November 2009 , an extremely severe haze process over the Pearl River Delta region was observed, which is one of the worst climate events in the past decade. In this paper, the causes of this particular event were discussed based on weather analysis, flow field analysis, remote sensing analysis, and physical and chemical characteristics of aerosols. This event was characterized by a long duration, a wide range influence and strong strength. Firstly, the event lasted for 7 days, just shorter than that one lasting for 8 days occurred during 3-10 January 2004. Secondly, it enveloped the entire Pearl River Delta, making the visibility of a number of stations less than 1km. Thirdly, the aerosol concentrations based on atmospheric composition monitoring network data showed the largest values since the establishment of the stations, greatly exceeding the coordinate default preset limit.

Key words: the Pearl River Delta, severe haze, low visibility, air quality

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