Paris, J.-D.; Riandet, A.; Bourtsoukidis, E.; Delmotte, M.; Berchet, A.; Williams, J.; Ernle, L.; Tadic, I.; Harder, H.; Lelieveld, J.: Shipborne measurements of methane and carbon dioxide in the Middle East and Mediterranean areas and contribution from oil and gas emissions. (2021)

Pöhlker, M. L.; Krüger, O. O.; Förster, J.-D.; Elbert, W.; Fröhlich-Nowoisky, J.; Pöschl, U.; Pöhlker, C.; Bagheri, G.; Bodenschatz , E.; Huffman, J. A. et al.; Scheithauer, S.; Mikhailov, E.: Respiratory aerosols and droplets in the transmission of infectious diseases. (2021)

Tian, X.; Wang, Y.; Beirle, S.; Xie, P.; Wagner, T.; Xu, J.; Li, A.; Dörner, S.; Ren, B.; Li, X.: Technical note：Evaluation of profile retrievals of aerosols and trace gases for MAX-DOAS measurements under different aerosol scenarios based on radiative transfer simulations. (2021)

Xie, Q.; Su, S.; Chen, J.; Dai, Y.; Yue, S.; Su, H.; Tong, H.; Zhao, W.; Ren, L.; Xu, Y. et al.; Cao, D.; Li, Y.; Sun, Y.; Wang, Z.; Liu, C.-Q.; Kawamura, K.; Jiang, G.; Cheng, Y.; Fu, P.: Impact of firework on nitrooxy-organosulfates in urban aerosols during Chinese New Year Eve. (2021)

Kumar, V.; Remmers, J.; Beirle, S.; Fallmann, J.; Kerkweg, A.; Lelieveld, J.; Mertens, M.; Pozzer, A.; Steil, B.; Wagner, T.: Evaluation of the coupled high-resolution atmospheric chemistry model system MECO(n) using in situ and MAX-DOAS NO₂ measurements. (2021)

Nussbaumer, C.; Tadic, I.; Dienhart, D.; Wang, N.; Edtbauer, A.; Ernle, L.; Williams, J.; Obersteiner, F.; Gutiérrez-Álvarez, I.; Harder, H. et al.; Lelieveld, J.; Fischer, H.: Measurement report: In situ observations of deep convection without lightning during the tropical cyclone Florence 2018. (2021)

Cheng, Y.; Ma, N.; Witt, C.; Rapp, S.; Wild, P.; Andreae, M. O.; Pöschl, U.; Su, H.: High efficacy of face masks explained by characteristic regimes of airborne SARS-CoV-2 virus abundance. (2021)

Chen, C.; Wang, X.; Binder, K.; Ghahremanpour, M. M.; van der Spoel, D.; Pöschl, U.; Su, H.; Cheng, Y.: Energetic analysis of succinic acid in water droplets: insight into the size-dependent solubility of atmospheric nanoparticles. (2021)

Tadic, I.; Nussbaumer, C.; Bohn, B.; Harder, H.; Marno, D.; Martinez, M.; Obersteiner, F.; Parchatka, U.; Pozzer, A.; Rohloff, R. et al.; Zöger, M.; Lelieveld, J.; Fischer, H.: Central role of nitric oxide in ozone production in the upper tropical troposphere over the Atlantic Ocean and West Africa. (2021)

Friedrich, N.; Eger, P.; Shenolikar, J.; Sobanski, N.; Schuladen, J.; Dienhart, D.; Hottmann, B.; Tadic, I.; Fischer, H.; Martinez, M. et al.; Rohloff, R.; Tauer, S.; Harder, H.; Pfannerstill, E. Y.; Wang, N.; Williams, J.; Brooks, J.; Drewnick, F.; Su, H.; Li, G.; Cheng, Y.; Lelieveld, J.; Crowley, J. N.: Reactive nitrogen around the Arabian Peninsula and in the Mediterranean Sea during the 2017 AQABA ship campaign. (2021)

Prass, M.; Andreae, M. O.; de Araùjo, A. C.; Artaxo, P.; Ditas, F.; Elbert, W.; Franco, M. A.; Hrabe de Angelis, I.; Kesselmeier, J.; Klimach, T. et al.; Kremper, L. A.; Thines, E.; Walter, D.; Weber, J.; Weber, B.; Fuchs, B. M.; Pöschl, U.; Pöhlker, C.: Bioaerosols in the Amazon rain forest: Temporal variations and vertical profiles of Eukarya, Bacteria and Archaea. (2021)

Xiang, Y.; Zhang, T.; Ma, C.; Lv, L.; Liu, J.; Liu, W.; Cheng, Y.: Lidar vertical observation network and data assimilation reveal key processes driving the 3-D dynamic evolution of PM_2.5 concentrations over the North China Plain. (2021)

Mahnke, C.; Weigel, R.; Cairo, F.; Vernier, J.-P.; Afchine, A.; Krämer, M.; Mitev, V.; Matthey, R.; Viciani, S.; D'Amato, F. et al.; Ploeger, F.; Deshler, T.; Borrmann, S.: The ATAL within the 2017 Asian Monsoon Anticyclone: Microphysical aerosol properties derived from aircraft-borne in situ measurements. (2021)

Weigel, R.; Mahnke, C.; Baumgartner, M.; Krämer, M.; Spichtinger, P.; Spelten, N.; Afchine, A.; Rolf, C.; Viciani, S.; D'Amato, F. et al.; Tost, H.; Borrmann, S.: New particle formation inside ice clouds: In-situ observations in the tropical tropopause layer of the 2017 Asian Monsoon Anticyclone. (2021)