A large decline of tropospheric NO2 in China since 2013 observed from space by SNPP OMPS
Yuxuan Wang, University of Houston, Department of Earth and Atmospheric Sciences, Houston, United States, Nan Lin, Tsinghua University, Earth System Sciences, Beijing, China, Ying Zhang, Tsinghua University, Department of Earth System Science, Beijing, China and Kai Yang, University of Maryland, College Park, MD, United States