%0 Journal Article %T Measurement report: Long-term variations in surface NOx and SO2 mixing ratios from 2006 to 2016 at a background site in the Yangtze River Delta region, China %A Yin, Q. %A Ma, Q. %A Lin, W. %A Xu, X. %A Yao, J. %J Atmos. Chem. Phys. %D 2022 %8 January 21 %V 22 %N 2 %I Copernicus Publications %@ 1680-7324 %F Yin2022 %R 10.5194/acp-22-1015-2022 %U https://acp.copernicus.org/articles/22/1015/2022/ %U https://acp.copernicus.org/articles/22/1015/2022/acp-22-1015-2022.pdf %U https://doi.org/10.5194/acp-22-1015-2022 %P 1015-1033