Global view on China's foggy-haze associated with air-pollutant conveyor belts.

Upper air and surface data from 1960 to 2016, NCEP reanalysis from 1990 to 2016, air composition data from 2015 to 2016, and data from the drift automatic weather station in the Arctic from August 2012 to February 2013 are used to analyze the heavy foggy haze in China from a global perspective. Our findings show that sensitive foggy haze in winter is located in the eastern region of China because of the comprehensive effect of multi-factor meteorological conditions and the response to climate change under global warming as follows. (1) For the past half-century, two winter monsoon airflows blow from the East Asian continent and adjacent sea to North China.