TY - JOUR A1 - Parrish, D. D. A1 - Derwent, R. G. A1 - Faloona, I. C. A1 - Mims, C. A. T1 - Technical note: Northern midlatitude baseline ozone – long-term changes and the COVID-19 impact JO - Atmos. Chem. Phys. J1 - ACP VL - 22 IS - 20 SP - 13423 EP - 13430 Y1 - 2022/10/18 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/22/13423/2022/ L1 - https://acp.copernicus.org/articles/22/13423/2022/acp-22-13423-2022.pdf DO - 10.5194/acp-22-13423-2022 ER -