Multi-scale Simulation of the Influence of Spring Dust on PM2.5 Concentration in Central Shaanxi Area, China
Received:September 05, 2018  
View Full Text  View/Add Comment  Download reader
KeyWord:Central Shaanxi area  Xi’an  Dust aerosol  PM2.5  Aerosol and Atmospheric Chemistry Model of the Institute of Atmospheric Physics (IAP-AACM)
Author NameAffiliationE-mail
WEI Ying State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
University of Chinese Academy of Sciences, Beijing 100049 
 
CHEN Huansheng State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029  
LIU Hang State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
University of Chinese Academy of Sciences, Beijing 100049 
 
CHEN Xueshun State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021 
chenxsh@mail.iap.ac.cn 
WANG Wei China National Environmental Monitoring Center, Beijing 100012  
WU Qizhong College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875  
LI Jie State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021 
 
WANG Zifa State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029
University of Chinese Academy of Sciences, Beijing 100049
Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021 
 
Hits: 143
Download times: 135
Abstract:
      The implement of "one belt and one road" program has made the starting station of the Silk Road Xi'an become the focus of the world. The air quality in Xi'an also attracts attention from the government and the public. Taking a strong dust period in northern China in May 2017 as a case, we firstly used the aerosol and atmospheric chemistry model developed by the Institute of Atmospheric Physics (IAP-AACM) to simulate the spatial and temporal distribution of fine particulate matter (PM2.5) in the Central Shaanxi area. Combined with hourly surface PM2.5 observation data, we explored the relationship between dust aerosol and the PM2.5 simulation. Results show that adding the dust component to anthropogenic PM2.5 significantly improves simulation accuracy, through which the correlation can be elevated by 0.4-0.6, and the sudden increase of PM2.5 during the strong dust period can be well reproduced. During strong dust and general periods, the contribution of dust aerosol to PM2.5 ranges from 60%-80% and 10%-30%, respectively. High-resolution simulations improve the model’s ability to capture the spatiotemporal changes of the pollutants.