Lachnitt, Hans-Christoph und Hoor, Peter und Kunkel, Daniel und Bramberger, Martina und Dörnbrack, Andreas und Müller, Stefan und Reutter, Philipp und Giez, Andreas und Kaluza, Thorsten und Rapp, Markus (2023) Gravity-wave-induced cross-isentropic mixing: a DEEPWAVE case study. Atmospheric Chemistry and Physics, 23 (1), Seiten 355-373. Copernicus Publications. doi: 10.5194/acp-23-355-2023. ISSN 1680-7316.
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Offizielle URL: https://dx.doi.org/10.5194/acp-23-355-2023
Kurzfassung
Orographic gravity waves (i.e., mountain waves) can potentially lead to cross-isentropic fluxes of trace gases via the generation of turbulence. During the DEEPWAVE (Deep Propagating Gravity Wave Experiment) campaign in July 2014, we performed tracer measurements of carbon monoxide (CO) and nitrous oxide (N2O) above the Southern Alps during periods of gravity wave activity. The measurements were taken along two stacked levels at 7.9 km in the troposphere and 10.9 km in the stratosphere. A detailed analysis of the observed wind components shows that both flight legs were affected by vertically propagating gravity waves with momentum deposition and energy dissipation between the two legs. Corresponding tracer measurements indicate turbulent mixing in the region of gravity wave occurrence. For the stratospheric data, we identified mixing leading to a change of the cross-isentropic tracer gradient of N2O from the upstream to the downstream region of the Southern Alps. Based on the quasi-inert tracer N2O, we identified two distinct layers in the stratosphere with different chemical composition on different isentropes as given by constant potential temperature 2. The CO–N2O relationship clearly indicates that irreversible mixing between these two layers occurred. Further, we found a significant change of the vertical profiles of N2O with respect to 2 from the upstream to the downstream side above the Southern Alps just above the tropopause. A scale-dependent gradient analysis reveals that this cross-isentropic gradient change of N2O is triggered in the region of gravity wave occurrence.
elib-URL des Eintrags: | https://elib.dlr.de/193575/ | ||||||||||||||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||||||||||||||
Titel: | Gravity-wave-induced cross-isentropic mixing: a DEEPWAVE case study | ||||||||||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 10 Januar 2023 | ||||||||||||||||||||||||||||||||||||||||||||
Erschienen in: | Atmospheric Chemistry and Physics | ||||||||||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | Ja | ||||||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||||||||||||||
Band: | 23 | ||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.5194/acp-23-355-2023 | ||||||||||||||||||||||||||||||||||||||||||||
Seitenbereich: | Seiten 355-373 | ||||||||||||||||||||||||||||||||||||||||||||
Verlag: | Copernicus Publications | ||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 1680-7316 | ||||||||||||||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||||||||||
Stichwörter: | Gravity-Wave, Deepwave, turbulent mixing | ||||||||||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Atmosphären- und Klimaforschung | ||||||||||||||||||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Physik der Atmosphäre > Verkehrsmeteorologie Institut für Physik der Atmosphäre Flugexperimente > Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Ziegele, Brigitte | ||||||||||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 25 Jan 2023 11:24 | ||||||||||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 19 Okt 2023 15:04 |
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