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 ›› 2021, Vol. 37 ›› Issue (5): 8-12.doi: 10.3969/j.issn.1673-503X.2021.05.002

• 论文 • 上一篇    下一篇

天津市东丽区一次持续性雾霾天气过程的特征及影响要素分析

史珺(),赵玉洁*()   

  1. 天津市东丽区气象局, 天津 300300
  • 收稿日期:2020-10-31 出版日期:2021-10-30 发布日期:2021-11-01
  • 通讯作者: 赵玉洁 E-mail:sj2013tintin@126.com;linlin95@tom.com
  • 作者简介:史珺, 女, 1988年生, 工程师, 主要从事天气预报分析, E-mail: sj2013tintin@126.com
  • 基金资助:
    天津市科技兴海项目(KJXH2013-18)

Analysis of the characteristics and influencing factors of a persistent fog and haze weather process in Dongli District, Tianjin

Jun SHI(),Yu-jie ZHAO*()   

  1. Meteorological Service in Dongli District of Tianjin, Tianjin 300300, China
  • Received:2020-10-31 Online:2021-10-30 Published:2021-11-01
  • Contact: Yu-jie ZHAO E-mail:sj2013tintin@126.com;linlin95@tom.com

摘要:

基于常规气象观测资料和PM2.5浓度资料,分析了2019年1月10—14日天津市东丽区出现的一次持续性雾霾天气特征及其成因。结果表明:此次雾霾天气具有明显的阶段性特征,高空平直西风环流、中层暖脊和地面弱气压场为此次雾霾天气出现提供了有利的天气形势。轻雾和霾阶段,能见度变化更易受到相对湿度的影响;而雾阶段,能见度变化更易受到风速的影响。PM2.5浓度与地面气象因子关系密切,与能见度、风速负相关,与相对湿度正相关。当其他气象条件稳定,且周边地区污染物浓度较高时,近地面风向转变,对本地区雾霾的出现起到关键性作用。

关键词: 雾霾天气, 阶段性特征, 能见度

Abstract:

Based on conventional meteorological observation data and PM2.5 concentration data, the characteristics and causes of persistent fog and haze weather occurring from January 10 to 14, 2019, in Dongli District of Tianjin were analyzed. The results show that the fog and haze weather has obvious phase characteristics. The general circulation, including upper-level straight stable westerly circulation, middle-level warm ridge, and weakened surface pressure, provides favorable synoptic conditions for the fog and haze weather. Visibility is more susceptible to relative humidity during light fog and haze stages, while at the fog stage, it is more susceptible to wind speed. PM2.5 concentration and surface meteorological elements are closely related. PM2.5 concentration is negatively correlated with visibility and wind speed and positively correlated with relative humidity. When other meteorological conditions are stable and the concentration of pollutants is high in the surrounding areas, the change of wind direction near the ground plays a key role in the occurrence of fog and haze in this regiony.

Key words: Fog and haze weather, Phase characteristics, Visibility

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