Balamurugan, Vigneshkumar;Chen, Jia;Qu, Zhen;Bi, Xiao;Gensheimer, Johannes;Shekhar, Ankit;Bhattacharjee, Shrutilipi;Keutsch, Frank N. Tropospheric NO
2
and O
3
Response to COVID‐19 Lockdown Restrictions at the National and Urban Scales in Germany Journal of Geophysical Research: Atmospheres 2021 126 19