1. Singh RP, Chauhan A (2020) Impact of lockdown on air quality in India during COVID-19 pandemic. Air Qual Atmosp Health 1–8
2. Zoran MA, Savastru RS, Savastru DM, Tautan MN (2020) Assessing the relationship between surface levels of PM2. 5 and PM10 particulate matter impact on COVID-19 in Milan, Italy. Sci Total Environ 139825
3. Agarwal A, Kaushik A, Kumar S, Mishra RK (2020) Comparative study on air quality status in Indian and Chinese cities before and during the COVID-19 lockdown period. Air Qual Atmosp Health 1–12
4. Ward MP, Xiao S, Zhang Z (2020) The role of climate during the COVID-19 epidemic in New South Wales, Australia. Transbound Emerg Dis 1–5. https://doi.org/10.1111/tbed.13631
5. Le Quéré C, Jackson RB, Jones MW, Smith AJ, Abernethy S, Andrew RM, ... Friedlingstein P (2020) Temporary reduction in daily global CO2 emissions during the COVID-19 forced confinement. Nat Climate Change 1–7