@article {687407, title = {Impact of COVID-19 lockdown on methane emissions over North China}, year = {Submitted}, author = {Sheng, Jian-Xiong and Bo Yao and Zhen Qu and Wang, Ting and Ronald G. Prinn and Pengfei Han and Pucai Wang and Ning Zeng and Zhiqiang Ma and Weijun Quan and Shaojie Song} }