Relationships of wind speed and precipitable water vapor with regional PM_2.5 based on WRF‐Chem model

Abstract Air pollution, especially the particulate matter (PM 2.5 ) remains to be a severe problem for environmental managers and researchers because it causes many respiratory diseases even casualties huge economic losses. Therefore, is significant study distribution characteristics of regional PM analyze mutual influence relationship between some influencing factors including air humidity, wind speed, atmospheric boundary conditions. Some scholars have studied planetary layer or relative humidity. However, relationships pollution meteorological conditions in China has been extensively recent years. association precipitation water vapor speed northeast (e.g., Jilin Heilongjiang province) could strengthened. Considering all components atmosphere affecting each other ability Weather Research Forecast (WRF) WRF‐Chemistry (WRF‐Chem) simulating parameters, we utilized WRF WRF‐Chem simulate precipitable vapor, . Then first, concentration values predicted from are validated with those at ground stations evaluate accuracy model. Second, analysis PWV was done. And results demonstrate that helpful decrease winter while plays small effect on elimination matter. potential effective tool pollution.