A51B-0015
Spatio-temporal Variations of Nitrogen Dioxide over Western China from Satellite Observations during 2005-2013
Friday, 18 December 2015
Poster Hall (Moscone South)
Yuanzheng Cui1, Jintai Lin2, Bo Huang1 and Chunqiao Song3, (1)Chinese University of Hong Kong, Hong Kong, Hong Kong, (2)Peking University, Beijing, China, (3)University of California Los Angeles, Los Angeles, CA, United States
Abstract:
Western China has experienced rapid urbanization and industrialization since the implementation of National Western Development Strategy by Chinese Government. Most resource-intensive industries and high-pollution factories had been moved from the east coast to Western China after 2000. In this research, the spatial and temporal variations of tropospheric NO2 concentration in 2005 – 2013 is analyzed based on the satellite observations by Ozone Measurement Instrument (OMI). The annual trends and seasonality of tropospheric NO2 over Western China are calculated. The results show that large increases are observed in urban areas and the polluted regions are expanding. Additionally, the seasonal patterns of some regions over Western China are changing significantly and more clean areas tend to changing from the characteristics of natural emissions to those of anthropogenic emissions. The spatial and temporal variations of NO2 concentrations are well responded to the rapid urbanization and industrialization over Western China.
