Changes in black carbon emissions in Europe and China due to COVID-19

Nikolaos Evangeliou, M. Jia, Stephen Matthew Platt, Sabine Eckhardt, Cathrine Lund Myhre, Paolo G. Laj, Lucas Alados-Arboledas, J. Backman, Benjamin T. Brem, Markus Fiebig, H. Flentje, A. Marinoni, M. Pandolfi, Jesus Yus-Diez, N. Prats, J. P. Putaud, K. Sellegri, M. Sorribas, K. Eleftheriadis, Stergios Vratolis, A. Wiedensohler, Andreas Stohl, X. Huang, J. Gao, A. Ding