TY - JOUR A1 - Li, R. A1 - Zhao, Y. A1 - Fu, H. T1 - Substantial changes of gaseous pollutants and chemical compositions in fine particles in North China Plain during COVID-19 lockdown period: anthropogenic vs meteorological influences JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 2021 SP - 1 EP - 32 Y1 - 2021/01/04 PB - Copernicus Publications SN - 1680-7375 UR - https://acp.copernicus.org/preprints/acp-2020-1199/ L1 - https://acp.copernicus.org/preprints/acp-2020-1199/acp-2020-1199.pdf DO - 10.5194/acp-2020-1199 ER -