TY - JOUR A1 - Putaud, J.-P. A1 - Pozzoli, L. A1 - Pisoni, E. A1 - Martins Dos Santos, S. A1 - Lagler, F. A1 - Lanzani, G. A1 - Dal Santo, U. A1 - Colette, A. T1 - Impacts of the COVID-19 lockdown on air pollution at regional and urban background sites in northern Italy JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 2020 SP - 1 EP - 18 Y1 - 2020/10/12 PB - Copernicus Publications SN - 1680-7375 UR - https://acp.copernicus.org/preprints/acp-2020-755/ L1 - https://acp.copernicus.org/preprints/acp-2020-755/acp-2020-755.pdf DO - 10.5194/acp-2020-755 ER -