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 ›› 2011, Vol. 27 ›› Issue (5): 27-31.

• 论文 • 上一篇    下一篇

2010年辽宁一次沙尘天气过程的气象因素及污染特征

王扬锋1 马雁军 陆忠艳2  谷伟3  刘宁微1  洪也1   

  1. 1.中国气象局沈阳大气环境研究所,辽宁 沈阳 110016;2.沈阳中心气象台,辽宁 沈阳 110016;3.辽宁气象局,辽宁 沈阳 110016
  • 出版日期:2011-10-30 发布日期:2011-10-30

Analysis of meteorological elements and air pollution during a sand dust weather process in 2010 in Liaoning province

WANG Yang-feng1 MA Yan-jun1 LU Zhong-yan2 GU Wei3 LIU Ning-wei1 HONG Ye1   

  1. 1. Institute of Shenyang Atmospheric Environment, China Meteorological Administration, Shenyang 110016, China; 2. Shenyang Central Meteorological Observatory, Shenyang 110016, China; 3. Liaoning Meteorological Service, Shenyang 110016, China
  • Online:2011-10-30 Published:2011-10-30

摘要: 利用常规气象观测资料以及环保监测数据,对2010年4月8日辽宁沙尘天气过程的高低空天气形势和主要气象要素进行了探讨,并对沈阳地区的空气污染状况进行了分析。结果表明:沙尘天气过程主要是受贝加尔湖地区东移的冷空气和蒙古低压的共同影响,强大的蒙古气旋造成的地面强变压导致地面风速加大,是形成沙尘天气的动力因子;沙尘天气来临前后,风速、能见度、湿度等发生急剧变化;在沙尘天气影响下,沈阳地区的PM10浓度迅速上升,而大风等有利的扩散条件,造成黑碳、气态污染物SO2和NO2浓度出现不同程度的下降。

关键词: 沙尘天气, 气象要素, 空气污染

Abstract: Based on the meteorological observational data from weather stations and monitoring data from environment protection department, the upper and lower weather situation and the main meteorological elements during a sand dust weather event occurred on April 8, 2010 in Liaoning province were discussed. The results indicate that this process is influenced by cold air moving to the east in Lake Baike region and Mongolia low pressure. The strong Mongolia cyclone makes strong allobaric gradient and wind speed on ground, which are the dynamic reasons forming sand dust weather. Many meteorological elements such as wind, visibility and humidity change sharply when sand dust weather occurs. PM10 concentration increases quickly in a short time because of the influence of sand dust weather, while the concentrations of black carbon, SO2 and NO2 decline in some extent because of favorable diffusion conditions such as gale in Shenyang.

Key words: Sand dust weather, Meteorological element, Air pollution