%0 conference lecture %@ %A Ramacher, M.O.P., Matthias, V., Badeke, R., Petrik, R., Quante, M., Arndt, J., Fink, L., Feldner, J., Schwarzkopf, D., Link, E.M., Wedemann, R. %D 2021 %J International Technical Meeting on Air Pollution and its Application %T Urban Population Exposure to Air Pollution Under COVID-19 Lockdown Conditions—Combined Effects of Emissions and Population Activity %U %X