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Aircraft-based observation of meteoric material in lower-stratospheric aerosol particles between 15 and 68°N

Schneider, J.; Weigel, R.; Klimach, T.; Dragoneas, A.; Appel, O.; Hünig, A.; Molleker, S.; Köllner, F.; Clemen, H.-C.; Eppers, O.; Hoppe, P.; Hoor, P.; Mahnke, C.; Krämer, M.; Rolf, C.; Grooß, J.-U.; Zahn, A.; Obersteiner, F.; Ravegnani, F.; Ulanovsky, A.; ... mehr

Abstract:
We analyse aerosol particle composition measurements from five research missions between 2014 and 2018 to assess the meridional extent of particles containing meteoric material in the upper troposphere and lower stratosphere (UTLS). Measurements from the Jungfraujoch mountaintop site and a low-altitude aircraft mission show that meteoric material is also present within middle- and lower-tropospheric aerosol but within only a very small proportion of particles. For both the UTLS campaigns and the lower- and mid-troposphere observations, the measurements were conducted with single-particle laser ablation mass spectrometers with bipolar-ion detection, which enabled us to measure the chemical composition of particles in a diameter range of approximately 150 nm to 3 µm. The five UTLS aircraft missions cover a latitude range from 15 to 68∘ N, altitudes up to 21 km, and a potential temperature range from 280 to 480 K. In total, 338 363 single particles were analysed, of which 147 338 were measured in the stratosphere. Of these total particles, 50 688 were characterized by high abundances of magnesium and iron, together with sulfuric ions, the vast majority (48 610) in the stratosphere, and are interpreted as meteoric material immersed or dissolved within sulfuric acid. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000130275
Veröffentlicht am 05.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung (IMK)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 26.01.2021
Sprache Englisch
Identifikator ISSN: 1680-7316, 1680-7324
KITopen-ID: 1000130275
Erschienen in Atmospheric Chemistry and Physics
Verlag European Geosciences Union (EGU)
Band 21
Heft 2
Seiten 989–1013
Nachgewiesen in Scopus
Web of Science
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