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

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (5): 25-31.doi: 10.3969/j.issn.1673-503X.2016.05.004

• 论文 • 上一篇    下一篇

外来源影响北京地区空气质量的典型个例分析

吴庆梅1, 刘卓1, 张胜军2, 李青春3   

  1. 1. 北京市气象台, 北京 100089;
    2. 中国气象科学研究院灾害性天气重点实验室, 北京 100081;
    3. 中国气象局城市气象 研究所, 北京 100089
  • 收稿日期:2015-06-01 修回日期:2015-09-06 出版日期:2016-10-31 发布日期:2016-10-31
  • 通讯作者: 张胜军 E-mail:zhangsj@cams.cma.gov.cn
  • 作者简介:吴庆梅,女,1973年生,高级工程师,主要从事短期天气预报研究,E-mail:wqm_bjqxt@sina.com。
  • 基金资助:

    国家自然科学基金“北京城市边界层特征对持续性大雾的影响研究”（41175014）和北京市自然科学基金项目“北京地区雾霾形成机理及客观预报研究”（8122022）共同资助。

Typical case study on external pollution sources influencing air quality in Beijing area

WU Qing-mei1, LIU Zhuo1, ZHANG Sheng-jun2, LI Qing-chun3   

  1. 1. Beijing Meteorological Observatory, Beijing 100089, China;
    2. State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China;
    3. Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China
  • Received:2015-06-01 Revised:2015-09-06 Online:2016-10-31 Published:2016-10-31

PDF (PC)

312

被引次数

1

摘要：

利用京津冀地区80个环境监测站PM2.5浓度的逐时监测资料和常规气象站的观测资料，分析了2013年1月京津冀地区3次典型重污染天气过程PM2.5浓度的分布和演变特征，选取PM2.5浓度快速增长时段的风场特征分析外来源对北京地区污染输送的影响。结果表明：2013年1月京津冀地区存在3个PM2.5浓度高值中心，分别位于石家庄-保定、廊坊和唐山地区。北京地区外来源主要来自河北省中南部的石家庄-保定及廊坊一带，主要通过边界层偏南风远距离输送影响北京地区，边界层辐合线和逆温结构加剧了污染物在北京地区的累积。随着静稳时间的增长，PM2.5污染物向燕山和太行山前输送堆积，造成北京地区PM2.5浓度高于河北省中南部地区，北京市郊区PM2.5浓度高于城区。

关键词: PM2.5浓度, 污染输送, 地形辐合, 外来源

Abstract:

Based on the hourly PM2.5 concentration observed at eighty environmental monitoring stations and conventional meteorological data,the spatial-temporal characteristics of PM2.5 concentration during three typical severe pollution events over the Beijing-Tianjin-Hebei region in January of 2013 were analyzed.The effect of external pollution sources on the pollutants transport in the Beijing area was investigated by analyzing the characteristics of wind field during the period of rapidly increasing PM2.5 concentration.The results indicate that there are three high-value centers of PM2.5 concentration over the Beijing-Tianjin-Hebei region in January of 2013,and they are located at the Shijiazhuang-Baoding,Langfang,and Tangshan areas in Hebei province,respectively.The external pollution sources for the Beijing area mainly come from the middle and southern regions of Hebei province such as the Shijiazhuang-Baoding and Langfang areas.Pollutants can be transported from long distance by the southerly winds in the boundary layer,and the convergence line and inversion structure in the boundary layer strengthen the accumulation of pollutants in the Beijing area.Under the persistent stable weather condition,PM2.5 pollutants are transported and accumulated in front of the Yanshan and Taihang mountains.This leads to PM2.5 concentration in the Beijing area larger than that in the middle and southern regions of Hebei province,and that in the suburban areas higher than that in the urban areas of Beijing.

Key words: PM2.5 concentration, Pollution transport, Topographic convergence, External pollution source

中图分类号: