Direct observations of CO2 emission reductions due to COVID-19 lockdown across European urban districts

by Nicolini, Giacomo, Antoniella, Gabriele, Carotenuto, Federico, Christen, Andreas, Ciais, Philippe, Feigenwinter, Christian, Gioli, Beniamino, Stagakis, Stavros, Velasco, Erik, Vogt, Roland, Ward, Helen C., Barlow, Janet, Chrysoulakis, Nektarios, Duce, Pierpaolo, Graus, Martin, Helfter, Carole, Heusinkveld, Bert, Järvi, Leena, Karl, Thomas, Marras, Serena, Masson, Valéry, Matthews, Bradley, Meier, Fred, Nemitz, Eiko, Sabbatini, Simone, Scherer, Dieter, Schume, Helmut, Sirca, Costantino, Steeneveld, Gert-Jan, Vagnoli, Carolina, Wang, Yilong, Zaldei, Alessandro, Zheng, Bo, Papale, Dario