Pletzer, Johannes Friedrich und Grewe, Volker (2024) Sensitivities of atmospheric composition and climate to altitude and latitude of hypersonic aircraft emissions. Atmospheric Chemistry and Physics (ACP), 24 (3), Seiten 1743-1775. Copernicus Publications. doi: 10.5194/acp-24-1743-2024. ISSN 1680-7316.
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Offizielle URL: https://acp.copernicus.org/articles/24/1743/2024/
Kurzfassung
Hydrogen powered hypersonic aircraft are designed to travel in the middle stratosphere at approximately 30 to 40 km. These aircraft can have a considerable impact on climate relevant species like stratospheric water vapor, ozone, and methane and thus would contribute to climate warming. The impact of hypersonic aircraft emissions on atmospheric composition and, in turn, on radiation fluxes differs strongly depending on cruise altitude. However, in contrast to variations in the altitude of emission, differences from variations in the latitude of emission are currently unknown. Using an atmospheric chemistry general circulation model, we show that a variation in the latitude of emission can have a larger effect on perturbations and stratospheric adjusted radiative forcing than a variation in the altitude of emission. Our results include the individual impacts of water vapor and nitrogen oxide emissions, as well as unburned hydrogen, on middle atmospheric water vapor, ozone, and methane and the resulting radiative forcing. Water vapor perturbation lifetime continues the known tropospheric increase with altitude and reaches almost 6 years in the middle stratosphere. Our results demonstrate how atmospheric composition changes caused by emissions of hypersonic aircraft are controlled by large scale processes like the Brewer Dobson circulation and, depending on the latitude of emission, local phenomena like polar stratospheric clouds. The analysis includes a model evaluation of ozone and water vapor with satellite data and a novel approach to reduce simulated years by one third. A prospect for future hypersonic research is the analysis of seasonal sensitivities and simulations with emissions from combustion of liquefied natural gas instead of liquid hydrogen.
elib-URL des Eintrags: | https://elib.dlr.de/202736/ | ||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
Titel: | Sensitivities of atmospheric composition and climate to altitude and latitude of hypersonic aircraft emissions | ||||||||||||
Autoren: |
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Datum: | 7 Februar 2024 | ||||||||||||
Erschienen in: | Atmospheric Chemistry and Physics (ACP) | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Ja | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Ja | ||||||||||||
Band: | 24 | ||||||||||||
DOI: | 10.5194/acp-24-1743-2024 | ||||||||||||
Seitenbereich: | Seiten 1743-1775 | ||||||||||||
Verlag: | Copernicus Publications | ||||||||||||
ISSN: | 1680-7316 | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Very fast aircraft can travel at 30 to 40 km altitude and are designed to use liquid hydrogen as fuel instead of kerosene. Depending on their flight altitude, the impact of these aircraft on the atmosphere and climate can change very much. Our results show that a variation inflight latitude can have a considerably higher change in impact compared to a variation in flight altitude. Atmospheric air transport and polar stratospheric clouds play an important role in hypersonic aircraft emissions. | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||
HGF - Programmthema: | Luftverkehr und Auswirkungen | ||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||
DLR - Forschungsgebiet: | L AI - Luftverkehr und Auswirkungen | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Klima, Wetter und Umwelt, L - Lufttransportbetrieb und Folgenabschätzung | ||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||
Institute & Einrichtungen: | Institut für Physik der Atmosphäre > Erdsystem-Modellierung | ||||||||||||
Hinterlegt von: | Pletzer, Johannes Friedrich | ||||||||||||
Hinterlegt am: | 08 Feb 2024 08:20 | ||||||||||||
Letzte Änderung: | 08 Feb 2024 08:20 |
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