福建省大气中O3污染特征研究

AbstractIn latest years,with the acceleration of urban industrialization,the phenomenonof ozone pollution in the atmosphere of Fujian Province has been concerned by moreand more researcher.Since the first day of 2013,China has implemented the AmbientAir Quality Standard(GB3095-2012)for the first time in dozens of cities.The newstandard stipulates that in addition to the four previous conventional pollutants,SO2,NO2,CO,and PM10,the relevant indicators of O3-8h and PM2.5 concentration limitshave also been newly added.This paper takes ozone pollution in the air as the mainresearch item,adopts the observation data of ozone concentration and relatedinfluencing factors in nine cities in Fujian Province from 2015 to 2019,do researchesabout the temporal distribution characteristics of ozone concentration,and analyzesthe ozone generation according to the data chart analysis.And then explore thecorrelation between ozone and some meteorological conditions.The main conclusionsare as follows:In 2015-2019,Fujian Province's ozone pollution showed an inverted "U"shapechange,that is,the trend of increasing first and then decreasing.The overall ozonepollution in the five years showed a deteriorating trend.The monthly variation ofozone concentration has the obvious characteristics of southern China.The ozoneconcentration curve shows an"M"shape change,that is,ozone pollution will reach itsmaximum around April and September;the 24-hour daily variation characteristiccurve of ozone shows a single peak The distribution of change is the lowestconcentration from the beginning of the day to 8:00 am,and the highest value occursat 12:00-18:00 every day.Spacial distribution characteristics is that the pollutionlevel in inland cities is more serious than that in coastal areas.Ozone consistence isnegatively correlative with relative humidity (RH),and positively correlative with airtemperature,so when it increase the air temperature and humidity,it will promote thegeneration of ozone.Keywords:ozone;pollution characteristics;meteorological conditions;precursors