摘要
该文利用空气质量、污染物资料、NCEP(1°×1°)再分析资料及常规气象资料,分析2017年10月25日—11月3日防城港市一次持续性空气污染过程的污染物特征和气象条件。结果表明:此次空气污染过程首要污染物为臭氧,臭氧浓度存在日变化;气温与臭氧浓度变化存在显著正相关,相对湿度与臭氧浓度变化存在显著负相关;午后太阳辐射增强、湿度降低、无降水等气象条件有利于臭氧浓度的增加;500hPa环流平直、地面为弱的高压脊、地面风速小、天气晴好少云、低层存在逆温层是本次持续性空气污染过程维持的有利气象条件。
Based on the data such as air quality,air pollutants,ground observation data and the NCEP 1°×1°reanalysis data,the air pollution characteristics and meteorological condition in Fangchenggang during a sustainable air pollution from October 25 th to November 3 rd,2017 were analyzed.The results show that the primary pollutant in the air is ozone,with a daily change in ozone concentrations.There is a significant positive correlation between air temperature and ozone concentration changes,but there is a significant negative correlation between relative humidity and ozone concentration changes.The weather conditions in the afternoon such as enhanced solar radiation,reduced humidity and no precipitation contribute to the increase of ozone concentrations.The weather conditions such as the 500 hPa straight circulation,the weak high pressure of the ground,the low wind speed on the ground,the fine weather,and the inversion layer in the lower layer are favorable for the air pollution to persist.
作者
黄春华
许文龙
HUANG Chunhua;XU Wenlong(Fangchenggang Meteorological Bureau,Fangchenggang 538001,China)
出处
《中低纬山地气象》
2019年第3期51-55,共5页
Mid-low Latitude Mountain Meteorology
关键词
空气污染
气象要素
逆温
臭氧
air pollution
meteorological element
inversion layer
ozone
