Publications of Hartwig Harder

Unfer, G. R.; Machado, L. A. T.; Albrecht, R. I.; Cecchini, M. A.; Harder, H.; Magina, F. C.; Pöhlker, M. L.; Pöschl, U.; de Arellano, J. V.; Williams, E. R. et al.; Wolff, S.; Pöhlker, C.: Decoding the relationship between cloud electrification, downdrafts, and surface ozone in the Amazon basin. Journal of Geophysical Research: Atmospheres 130 (4), e2024JD042158 (2025)

Curtius, J.; Heinritzi, M.; Beck, L. J.; Pöhlker , M. L.; Tripathi, N.; Krumm, B. E.; Holzbeck, P.; Nussbaumer, C. M.; Pardo, L. H.; Klimach, T. et al.; Barmpounis, K.; Andersen, S. T.; Bardakov, R.; Bohn, B.; Cecchini, M. A.; Chaboureau, J.-P.; Dauhut, T.; Dienhart, D.; Dörich, R.; Edtbauer, A.; Giez, A.; Hartmann, A.; Holanda, B. A.; Joppe, P.; Kaiser, K.; Keber, T.; Klebach, H.; Krüger, O. O.; Kürten, A.; Mallaun, C.; Marno, D.; Martinez, M.; Monteiro, C.; Nelson, C.; Ort, L.; Raj, S. S.; Richter, S.; Ringsdorf, A.; Rocha, F.; Simon, M.; Sreekumar, S.; Tsokankunku, A.; Unfer, G. R.; Valenti, I. D.; Wang, N.; Zahn, A.; Zauner-Wieczorek, M.; Albrecht, R. I.; Andreae, M. O.; Artaxo, P.; Crowley, J. N.; Fischer, H.; Harder, H.; Herdies, D. L.; Machado, L. A. T.; Pöhlker, C.; Pöschl, U.; Possner, A.; Pozzer, A.; Schneider, J.; Williams, J.; Lelieveld, J.: Isoprene nitrates drive new particle formation in Amazon’s upper troposphere. Nature 636, pp. 124 - 130 (2024)

Shen, J.; Russell, D. M.; DeVivo, J.; Kunkler, F.; Baalbaki, R.; Mentler, B.; Scholz, W.; Yu, W.; Caudillo-Plath, L.; Sommer, E. et al.; Ahongshangbam, E.; Alfaouri, D.; Almeida, J.; Amorim, A.; Beck, L. J.; Beckmann, H.; Berntheusel, M.; Bhattacharyya, N.; Canagaratna, M. R.; Chassaing, A.; Cruz-Simbron, R.; Dada, L.; Duplissy, J.; Gordon, H.; Granzin, M.; Schute, L. G.; Heinritzi, M.; Iyer, S.; Klebach, H.; Krüger, T.; Kürten, A.; Lampimäki, M.; Liu, L.; Lopez, B.; Martinez, M.; Morawiec, A.; Onnela, A.; Peltola, M.; Rato, P.; Reza, M.; Richter, S.; Rörup, B.; Sebastian, M. K.; Simon, M.; Surdu, M.; Tamme, K.; Thakur, R. C.; Tomé, A.; Tong, Y.; Top, J.; Umo, N. S.; Unfer, G.; Vettikkat, L.; Weissbacher, J.; Xenofontos, C.; Yang, B.; Zauner-Wieczorek, M.; Zhang, J.; Zheng, Z.; Baltensperger, U.; Christoudias, T.; Flagan, R. C.; Haddad, I. E.; Junninen, H.; Möhler, O.; Riipinen, I.; Rohner, U.; Schobesberger, S.; Volkamer, R.; Winkler, P. M.; Hansel, A.; Lehtipalo, K.; Donahue, N. M.; Lelieveld, J.; Harder, H.; Kulmala, M.; Worsnop, D. R.; Kirkby, J.; Curtius, J.; He, X.-C.: New particle formation from isoprene under upper-tropospheric conditions. Nature 636, pp. 115 - 123 (2024)

Machado, L. A. T.; Unfer, G. R.; Brill, S.; Hildmann, S.; Pöhlker, C.; Cheng, Y.; Williams, J.; Harder, H.; Andreae, M. O.; Artaxo, P. et al.; Curtius, J.; Franco, M. A.; Cecchini, M. A.; Edtbauer, A.; Hoffmann, T.; Holanda, B.; Khadir, T.; Krejci, R.; Kremper, L. A.; Liu, Y.; Meller, B. B.; Pöhlker, M. L.; Quesada, C. A.; Ringsdorf, A.; Riipinen, I.; Trumbore, S.; Wolff, S.; Lelieveld, J.; Pöschl, U.: Frequent rainfall-induced new particle formation within the canopy in the Amazon rainforest. Nature Geoscience 17 (2024)

Xenofontos, C.; Kohl, M.; Ruhl, S.; Almeida, J.; Beckmann, H. M.; Caudillo-Plath, L.; Ehrhart, S.; Höhler, K.; Kaniyodical Sebastian, M.; Kong, W. et al.; Kunkler, F.; Onnela, A.; Rato, P.; Russell, D. M.; Simon, M.; Stark, L.; Umo, N. S.; Unfer, G. R.; Yang, B.; Yu, W.; Zauner-Wieczorek, M.; Zgheib, I.; Zheng, Z.; Curtius, J.; Donahue, N. M.; El Haddad, I.; Flagan, R. C.; Gordon, H.; Harder, H.; He, X.-C.; Kirkby, J.; Kulmala, M.; Möhler, O.; Pöhlker, M. L.; Schobesberger, S.; Volkamer, R.; Wang, M.; Borrmann, S.; Pozzer, A.; Lelieveld, J.; Christoudias, T.: The impact of ammonia on particle formation in the Asian Tropopause Aerosol Layer. npj Climate and Atmospheric Science 7 (1), 215 (2024)

Nowatzki, M.; Fitzsimmons, K. E.; Harder, H.; Rosner, H.-J.: Investigating palaeodune orientations and contemporary wind regimes in Southeast Kazakhstan using a semi-automated mapping framework. Earth surface processes and landforms 49 (2024)

Machado, L. A. T.; Kesselmeier, J.; Botía, S.; van Asperen, H.; Andreae, M. O.; de Araújo, A. C.; Artaxo, P.; Edtbauer, A.; Ferreira, R. R.; Franco, M. A. et al.; Harder, H.; Jones, S. P.; Dias-Júnior, C. Q.; Haytzmann, G. G.; Quesada, C. A.; Komiya, S.; Lavrič, J. V.; Lelieveld, J.; Levin, I.; Nölscher, A.; Pfannerstill, E. Y.; Pöhlker, M. L.; Pöschl, U.; Ringsdorf, A.; Rizzo, L.; Yáñez-Serrano, A. M.; Trumbore, S. E.; Valenti, W. I. D.; de Arellano , J. V.-G.; Walter, D.; Williams, J.; Wolff, S.; Pöhlker, C.: How rainfall events modify trace gas mixing ratios in central Amazonia. Atmospheric Chemistry and Physics 24 (15), pp. 8893 - 8910 (2024)

Nussbaumer, C. M.; Kohl, M.; Pozzer, A.; Tadic, I.; Rohloff, R.; Marno, D.; Harder, H.; Ziereis, H. A.; Zahn, A.; Obersteiner, F. et al.; Hofzumahaus, A.; Fuchs, H.; Künstler, C.; Brune, W. H.; Ryerson, T. B.; Peischl, J.; Thompson, C.; Bourgeois, I.; Lelieveld, J.; Fischer, H.: Ozone Formation Sensitivity to Precursors and Lightning in the Tropical Troposphere Based on Airborne Observations. Journal of Geophysical Research: Atmospheres 129 (14), e2024JD041168 (2024)

Kirkby, J.; Amorim, A.; Baltensperger, U.; Carslaw, K. S.; Christoudias, T.; Curtius, J.; Donahue, N. M.; Haddad, I. E.; Flagan, R. C.; Gordon, H. et al.; Hansel, A.; Harder, H.; Junninen, H.; Kulmala, M.; Kürten, A.; Laaksonen, A.; Lehtipalo, K.; Lelieveld, J.; Möhler, O.; Riipinen, I.; Stratmann, F.; Tomé, A.; Virtanen, A.; Volkamer, R.; Winkler, P. M.; Worsnop, D. R.: Atmospheric new particle formation from the CERN CLOUD experiment. Nature Geoscience 16, pp. 948 - 957 (2023)

Hamryszczak, Z.; Dienhart, D.; Brendel, B.; Rohloff, R.; Marno, D.; Martinez, M.; Harder, H.; Pozzer, A.; Bohn , B.; Zöger , M. et al.; Lelieveld, J.; Fischer, H.: Measurement report: Hydrogen peroxide in the upper tropical troposphere over the Atlantic Ocean and western Africa during the CAFE-Africa aircraft campaign. Atmospheric Chemistry and Physics 23 (10), pp. 5929 - 5943 (2023)

Dienhart, D.; Brendel, B.; Crowley, J. N.; Eger, P. G.; Harder, H.; Martinez, M.; Pozzer, A.; Rohloff, R.; Schuladen, J.; Tauer, S. et al.; Walter, D.; Lelieveld, J.; Fischer, H.: Formaldehyde and hydroperoxide distribution around the Arabian Peninsula – evaluation of EMAC model results with ship-based measurements. Atmospheric Chemistry and Physics 23 (1), pp. 119 - 142 (2023)

Beall, C. M.; Hill, T. C. J.; DeMott, P. J.; Könemann, T.; Pikridas, M.; Drewnick, F.; Harder, H.; Pöhlker, C.; Lelieveld, J.; Weber, B. et al.; Iakovides, M.; Prokeš, R.; Sciare, J.; Andreae, M. O.; Stokes, M. D.; Prather, K. A.: Ice-Nucleating Particles Near Two Major Dust Source Regions. Atmospheric Chemistry and Physics 22 (18), pp. 12607 - 12627 (2022)

Osipov, S.; Chowdhury, S.; Crowley, J. N.; Tadic, I.; Drewnick, F.; Borrmann, S.; Eger, P.; Fachinger, F.; Fischer, H.; Predybaylo, E. et al.; Fnais, M.; Harder, H.; Pikridas, M.; Vouterakos, P.; Pozzer, A.; Sciare, J.; Ukhov, A.; Stenchikov, G. L.; Williams, J.; Lelieveld, J.: Severe atmospheric pollution in the Middle East is attributable to anthropogenic sources. Communications Earth & Environment 3, 203 (2022)

Reifenberg, S. F.; Martin, A.; Kohl, M.; Bacer, S.; Hamryszczak, Z.; Tadic, I.; Röder, L.; Crowley, D. J.; Fischer, H.; Kaiser, K. et al.; Schneider, J.; Dörich, R.; Crowley, J. N.; Tomsche, L.; Marsing, A.; Voigt, C.; Zahn, A.; Pöhlker, C.; Holanda, B. A.; Krüger, O.; Pöschl, U.; Pöhlker, M.; Jöckel, P.; Dorf, M.; Schumann, U.; Williams, J.; Bohn, B.; Curtius, J.; Harder, H.; Schlager, H.; Lelieveld, J.; Pozzer, A.: Numerical simulation of the impact of COVID-19 lockdown on tropospheric composition and aerosol radiative forcing in Europe. Atmospheric Chemistry and Physics 22 (16), pp. 10901 - 10917 (2022)

Wietzoreck, M.; Kyprianou, M.; Bandowe, B. A. M.; Celik, S.; Crowley, J. N.; Drewnick, F.; Eger, P.; Friedrich, N.; Iakovides, M.; Kukučka, P. et al.; Kuta, J.; Nežiková, B.; Pokorná, P.; Přibylová, P.; Prokeš, R.; Rohloff, R.; Tadic, I.; Tauer, S.; Wilson, J.; Harder, H.; Lelieveld, J.; Pöschl, U.; Stephanou, E. G.; Lammel, G.: Polycyclic aromatic hydrocarbons (PAHs) and their alkylated, nitrated and oxygenated derivatives in the atmosphere over the Mediterranean and Middle East seas. Atmospheric Chemistry and Physics 22 (13), pp. 8739 - 8766 (2022)

Nussbaumer, C. M.; Pozzer, A.; Tadic, I.; Röder, L.; Obersteiner, F.; Harder, H.; Lelieveld, J.; Fischer, H.: Tropospheric ozone production and chemical regime analysis during the COVID-19 lockdown over Europe. Atmospheric Chemistry and Physics 21 (9), pp. 6151 - 6165 (2022)

Voigt, C.; Lelieveld, J.; Schlager, H.; Schneider, J.; Curtius, J.; Meerkötter, R.; Sauer, D.; Bugliaro, L.; Bohn, B.; Crowley, J. N. et al.; Erbertseder, T.; Groβ, S.; Hahn, V.; Li, Q.; Mertens, M.; Pöhlker, M. L.; Pozzer, A.; Schumann, U.; Tomsche, L.; Williams, J.; Zahn, A.; Andreae, M.; Borrmann, S.; Bräuer, T.; Dörich, R.; Dörnbrack, A.; Edtbauer, A.; Ernle, L.; Fischer, H.; Giez, A.; Granzin, M.; Grewe, V.; Harder, H.; Heinritzi, M.; Holanda, B. A.; Jöckel, P.; Kaiser, K.; Krüger, O. O.; Lucke, J.; Marsing, A.; Martin, A.; Matthes, S.; Pöhlker, C.; Pöschl, U.; Reifenberg, S.; Ringsdorf, A.; Scheibe, M.; Tadic, I.; Zauner-Wieczorek, M.; Henke, R.; Rapp, M.: Cleaner skies during the COVID-19 lockdown. Bulletin of the American Meteorological Society 103 (2022)

Nussbaumer, C. M.; Crowley, J. N.; Schuladen, J.; Williams, J.; Hafermann, S.; Reiffs, A.; Axinte, R.; Harder, H.; Ernest, C.; Novelli, A. et al.; Sala, K.; Martinez, M.; Mallik, C.; Tomsche, L.; Plass-Dülmer, C.; Bohn , B.; Lelieveld, J.; Fischer, H.: Measurement report: Photochemical production and loss rates of formaldehyde and ozone across Europe. Atmospheric Chemistry and Physics 21 (24), pp. 18413 - 18432 (2021)

Dienhart, D.; Crowley, J. N.; Bourtsoukidis, E.; Edtbauer, A.; Eger, P. G.; Ernle, L.; Harder, H.; Hottmann, B.; Martinez, M.; Parchatka, U. et al.; Paris, J.-D.; Pfannerstill, E. Y.; Rohloff, R.; Schuladen, J.; Stönner, C.; Tadic, I.; Tauer, S.; Wang, N.; Williams, J.; Lelieveld, J.; Fischer, H.: Measurement report: Observation-based formaldehyde production rates and their relation to OH reactivity around the Arabian Peninsula. Atmospheric Chemistry and Physics 21 (23), pp. 17373 - 17388 (2021)

Nussbaumer, C. M.; Parchatka, U.; Tadic, I.; Bohn , B.; Marno, D.; Martinez, M.; Rohloff, R.; Harder, H.; Kluge, F.; Pfeilsticker, K. et al.; Obersteiner, F.; Zöger, M.; Doerich, R.; Crowley, J. N.; Lelieveld, J.; Fischer, H.: Modification of a conventional photolytic converter for improving aircraft measurements of NO₂ via chemiluminescence chemiluminescence. Atmospheric Measurement Techniques 14 (10), pp. 6759 - 6776 (2021)