Air Quality over China. - Gerrit de Leeuw; Ronald van der A; Jianhui Bai; Yong Xue; Costas A. Varotsos; Zhengqiang Li; Cheng Fan 001; Xingfeng Chen; Ioannis Christodoulakis; Jieying Ding; Xuewei Hou; Georgios Kouremadas; et al. (Remote. Sens., 2021)