主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2017, Vol. 33 ›› Issue (3): 68-79.doi: 10.3969/j.issn.1673-503X.2017.03.009

• 论文 • 上一篇    下一篇

浙江省重度空气污染过程时空变化特征

李怀川1, 陈宣淼2, 叶子祥1, 吴贤笃1   

  1. 1. 温州市气象局, 浙江 温州 325000;
    2. 乐清市气象局, 浙江 乐清 325600
  • 收稿日期:2016-03-18 修回日期:2016-08-26 出版日期:2017-06-30 发布日期:2017-06-30
  • 作者简介:李怀川,男,1981年生,工程师,主要从事环境空气质量预报研究,E-mail:10342819@qq.com。
  • 基金资助:
    温州市公益性科技计划项目“温州市霾污染预报、预警系统研究”(S20140020)资助。

Spatial-temporal characteristics of severe air pollution events in Zhejiang province

LI Huai-chuan1, CHEN Xuan-miao2, YE Zi-xiang1, WU Xian-du1   

  1. 1. Wenzhou Meteorological Service, Wenzhou 325000, China;
    2. Yueqing Meteorological Service, Leqing 325600, China
  • Received:2016-03-18 Revised:2016-08-26 Online:2017-06-30 Published:2017-06-30

摘要: 利用2012年10月至2015年5月浙江省11个地市逐日和逐时AQI监测资料,对浙江省各地AQI>200的61次重度空气污染过程的发生时间、持续时间及各重度污染过程AQI的时间变化特征进行了分析,并结合天气形势场探讨重度空气污染过程的时空变化特征。结果表明:2012年10月至2015年5月浙江省各地重度空气污染和严重空气污染过程主要发生在冬季(12月至翌年1月),主要污染物为PM2.5;重度空气污染时数呈西北部地区多、东南部地区少的空间分布,地区间差异显著。浙江省重度空气污染过程可以分为同步变化型、南北输送型和区域累积型3种类型,南北输送型又可以分为移动输送和扩散输送,其中移动输送表现为局域移动和片区移动两种形式;区域累积型污染易发展为严重污染,且持续时间较长。

关键词: 空气污染, PM2.5, AQI, 天气形势, 南北输送

Abstract: Daily and hourly air quality index (AQI) data from October of 2012 to May of 2015 in 11 cities of Zhejiang province were used to analyze the occurrence time,durations and temporal variations of AQI during the 61 severe air pollution events when the AQI was more than 200.Weather patterns were used to reveal the spatial-temporal variations of severe air pollution events as well.The results show that severe pollution events mainly occur in winter,especially during December and January,and PM2.5 is the primary pollutant.The number of severe pollution hours is more in the northwestern region than in the southeastern region,appearing significant regional differences.Three types of weather patterns contribute to severe pollution in Zhejiang province and they are Synchronous Change,North-south Transport and Regional Accumulation.Type North-south Transport can be further divided into Movement Transport and Diffusion Transport with the former presenting local movement and area movement patterns.Type Regional Accumulation tends to develop into severe pollution with long-hour duration.

Key words: Air pollution, PM2.5, AQI, Weather pattern, North-south transport

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