广东省春节期间空气质量特征及预报方法研究

2017年春节期间广东省环境空气质量自动监测站的数据分析结果表明:春节假期广东省空气质量等级变化较大.除夕全省空气质量为良;初一,全省以良和轻度污染为主,粤东出现重度污染,粤西和粤北出现中度污染,可能与除夕夜烟花爆竹燃放有关;初二起,全省空气质量逐渐转为优良.首要污染物以PM2.5和O3为主.现有的NAQPMS和CMAQ空气质量预报模型在污染相对严重的初一表现较差,主要是因为数值模型未能考虑到烟花爆竹燃放等排放源的输入.

Research and Forecast on Air Qualityin Guangdong Province During Spring Festival

The ambient air qualitydata of Guangdong Province during the Spring Festival of 2017 were analyzed.The results showed that air quality level changedrapidlyduring the Spring Festival in 2017.On the New Year's Eve,the air quality was good.On the New Year's Day,air quality was moderately or heavily polluted in some non-PRD cities,which was probably caused by setting fireworks and firecrackers off.Air quality of all cities turned into excellent and good afterwards.During the Spring Festival,PM2.5 and O3 were the major air pollutants in most cities of Guangdong.Since lacking of fireworks and firecrackers emission data,the numeric models,including NAQPMS and CMAQ performed badly in AQI levels prediction of the New Year's Day.