Research on the Characteristics of Sulfate Pollution and Meteorological Influencing Factors in Taiyuan City during the Winter of 2019-2022
In order to study the reaction of sulfate(SO42-)to the long-term reduction of sulfur dioxide(SO2).In this study,4-year online hourly resolution data were used to study SO42-from 2019 to 2022 during winter in Taiyuan.The results showed that SO2 decreased from 32.60 μg/m3 to 19.33 μg/m3,SO42-decreased from 13.87 μg/m3 to 2.81 μg/m3,the proportion of SO42-in PM2.5 decreased from 16.4%to 5.8%,and SOR decreased significantly from 0.3 to 0.13.Combined with conditional probability function(CPF),concentration weighted trajectory(CWT)model and backward trajectory analysis,local contribution and southwest regional transport were the main sources of SO42-in 2019,while SO42-mainly came from southwest regional transport in 2020-2022.
NETL
NSTL
万方数据
