Satellite-Based Spatiotemporal Trends in PM2.5 Concentrations: China, 2004–2013 (9 page pdf, Zongwei Ma, Xuefei Hu, Andrew M. Sayer, Robert Levy, Qiang Zhang, Yingang Xue, Shilu Tong, Jun Bi, Lei Huang,and Yang Liu, Environmental Health Perspectives, Feb. 1, 2016)
Also discussed here: A Clearer Picture of China’s Air (1 page pdf, Nate Seltenrich, Environmental Health Perspectives, Feb.1, 2016)
Today we review measurements of PM 2.5 for China, derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the higher resolution (10 km) MODIS C6 DB AOD data, merged with the sparse ground network data from 2004 to 2013. During that time, the concentration levels of PM2.5 first increased to 2007 and then decreased from 2008 to 2013 except in the central east area of the country (near Beijing) as a result of policy decisions by the government to reduce PM 2.5 emissions. The time series of estimated data also indicated a maximum concentration in winter and a minimum in summer. The research demonstrates the value of satellite measurements to augment and extend surface networks.
To see Key Quotes and Links to key reports about this post, click HERE