Modeling study of the 2010 regional haze event in the North China Plain

Atmospheric Chemistry and Physics

P. E.Saide¹  J.Xin¹  G. R.Carmichael¹  Z.Wang¹  M.Gao¹  Y.Wang¹  M.Yu¹  Z.Liu¹ 

DOI  :  10.5194/acp-16-1673-2016

学科分类：大气科学

来源: Copernicus Publications

【 摘 要 】

The online coupled Weather Research and Forecasting-Chemistry (WRF-Chem)model was applied to simulate a haze event that happened in January 2010 inthe North China Plain (NCP), and was validated against various types ofmeasurements. The evaluations indicate that WRF-Chem provides reliablesimulations for the 2010 haze event in the NCP. This haze event was mainlycaused by high emissions of air pollutants in the NCP and stable weatherconditions in winter. Secondary inorganic aerosols also played an importantrole and cloud chemistry had important contributions. Air pollutants outsideBeijing contributed about 64.5 % to the PM_2.5 levels in Beijingduring this haze event, and most of them are from south Hebei, Tianjin city,Shandong and Henan provinces. In addition, aerosol feedback has importantimpacts on surface temperature, relative humidity (RH) and wind speeds, andthese meteorological variables affect aerosol distribution and formation inturn. In Shijiazhuang, Planetary Boundary Layer (PBL) decreased about 278.2 mand PM_2.5 increased more than 20 µg m⁻³ due to aerosolfeedback. It was also shown that black carbon (BC) absorption hassignificant impacts on meteorology and air quality changes, indicating moreattention should be paid to BC from both air pollution control and climatechange perspectives.

【 授权许可】

Unknown