Analysis of Air Pollution Characteristics and Meteorological Impact in Hunan Province
In order to explore the variation characteristics of pollution processes and the influence of meteorological conditions on different primary pollutants in Hunan Province,the duration and distribution characteristics of 68 pollution processes were analyzed by using the data of national control stations and meteorological observation data of 14 cities in Hunan Province from 2015 to 2021.According to the tracing analysis of pollutant census,the transport pathway and the terrain characteristics,the high impact area division was proposed,and made a detailed analysis of the feedback mechanisms of meteorological factors for different primary pollutants.The results showed that the pollution process in Hunan was dominated by particulate matter pollution,and the annual variation showed a single-peak variation with a general duration of no more than 3 days.The pollutants mainly affected Hunan in 3 paths from the northern Hunan region,with local accumulation dominating and the superposition of external transport and local pollution second.Particulate matter pollution was mainly affected by the stability of the boundary layer,temperature inversion and high humidity near the ground.Ozone pollution was mainly affected by the conditions suitable for photolysis of the premise brought by high temperature.
NETL
NSTL
万方数据
维普
