Abstract
In this study, the ground measured nitrogen dioxide (NO 2 ) column at six sites of the AErosol RObotic NETwork (AERONET) in China were collected to evaluate the Global Ozone Monitoring Experiment-2 (GOME-2) tropospheric NO 2 product. The results show the correlated coefficient of the two datasets is 0.851. The long temporal variations and spatial distributions of the GOME-2 tropospheric (trop) NO 2 in the heating season (Nov, Dec, Jan and Feb) and the non-heating season over China were plotted. The results indicate that in the heating season, the trop NO 2 column values in the North and East China are much higher in the non-heating seasons. Although the trends of the trop NO 2 column in the non-heating season from 2013 to 2017 are significantly decreased, the variations in the heating are not significant. It proved that the coal heating can have a great impact on trop NO 2 column variations in China.
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