Accès ouvert
2026
preprint
OpenAlex
Fatih Ekinci, Oliver Eppers, Oliver Appel, Felix Ploeger et autres
Abstract. This study examines how Asian Summer Monsoon (ASM) outflow perturbs the chemical composition of background aerosol in the extratropical lower stratosphere (ExLS). We analyze the summer-to-autumn transition in aerosol chemical composition using in-situ measurements from the ERICA instrument acquired during the …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Franziska Weyland, Peter Hoor, Daniel Kunkel, Felix Plöger et autres
Ozone and water vapor in the lowermost stratosphere (LMS) modify the Earth’s radiative budget, influence large-scale dynamics, and affect tropospheric air quality through exchange processes at the tropopause. Despite this importance, the variability and long-term trends of LMS ozone and, in particular, …
de, us
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Accès ouvert
2026
conference-abstract
OpenAlex
Nicolas Emig, Armin Afchine, Heiko Bozem, Peter Hoor et autres
The composition of the extratropical transition layer (ExTL), in particular the mixing ratios of ozone and water vapor, has a high impact on the radiative budget of the atmosphere. It is characterized by states originating from merging and mixing of tropospheric and …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Stephan Kessler, Nicolas Emig, Hans‐Christoph Lachnitt, Daniel Kunkel et autres
Determining the atmospheric abundance and the emission sources of carbonyl sulfide (OCS) plays a crucial role for the sulfur budget in the atmosphere.In addition to its main anthropogenic and biogenic sources, biomass burning is assumed to be an essential, but not well …
de, gb
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Accès ouvert
2026
conference-abstract
OpenAlex
Helmut Ziereis, Peter Hoor, Jens-Uwe Grooß, Andreas Zahn et autres
Total reactive nitrogen and its distribution between the gas and particle phases are key parameters for understanding the processes controlling the ozone budget in the polar winter stratosphere. Observations in the lowermost stratosphere reflect heterogeneous processes in the stratosphere above, leading to …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Peter Hoor, Franziska Weyland, Vera Bense, Heiko Bozem et autres
The composition of the UTLS plays a critical role in shaping Earth’s radiation budget, large-scale dynamics, and not least surface weather and air quality. Yet, its high spatiotemporal variability - driven by diverse transport and mixing pathways on different time scales - …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Simona Ripperger-Lukošiūnaitė, Steffen Ziegler, Philipp Eger, Steffen Beirle et autres
Inland shipping is potentially an important contributor to local air pollution. Long-lasting diesel engines of inland waterway vessels operate at high temperatures and emit NOx (NO + NO2), which have negative impacts on human health. Emissions from inland ships are concentrated near …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Anna Breuninger, Christian Rolf, Patrick Konjari, Heiko Bozem et autres
The chemical composition throughout the atmosphere changes as a consequence of urbanization, developing industry and anthropogenic activities. Especially the upper troposphere and lower stratosphere (UTLS) is highly sensitive to these changes in chemical composition. With increasing anthropogenic emissions, the urgency to understand …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Thorsten Diederich, Heiko Bozem, Elisabeth Horst, Peter Hoor et autres
Chemically active chlorine species (ClOx) play a central role in the catalytic depletion of ozone in the polar winter and spring stratosphere. Together with the reservoir species HCl and ClONO2, they form inorganic chlorine (Cly). The amount and partitioning of Cly strongly …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Jonas Blumenroth, Hans‐Christoph Lachnitt, Heiko Bozem, Franziska Weyland et autres
Mixing between the upper troposphere (UT) and the lower stratosphere (LS) occurs on short timescales compared to dynamic processes within the stratosphere. These mixing processes form the Extratropical Transition Layer (ExTL). Due to the nature of the tropopause as transport barrier, tracers …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Johannes Strobel, Ronja Van Luijt, Valentin Lauther, Franziska Weyland et autres
Transport and mixing strongly determine the trace gas composition of the Arctic upper troposphere / lower stratosphere (UTLS), but spatial and temporal variability of the relevant processes are still not well quantified. The Arctic lowermost stratosphere (LMS) is fed via, and thus …
de
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Accès ouvert
2026
conference-abstract
OpenAlex
Holger Tost, Peter Hoor
Convection represents a major pathway of moisture and trace species into the upper troposphere. However, the role of convection for cross-tropopause transport is still under discussion, e.g., the processes of moisture entry into the lower stratosphere. Deep convection highly perturbs the local …
de
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