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Particle microphysics and chemistry in remotely observed mountain polar stratospheric clouds

Carslaw, Kenneth S. und Wirth, Martin und Tsias, A. und Luo, B.P. und Dörnbrack, Andreas und Leutbecher, Martin und Volkert, Hans und Renger, Wolfgang und Bacmeister, Julio T. und Peter, Thomas (1998) Particle microphysics and chemistry in remotely observed mountain polar stratospheric clouds. Journal of Geophysical Research: Atmospheres, 103, Seiten 5785-5796. ISSN 0148-0227.

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Polar stratospheric clouds (PSCs) at 22–26 km were observed over the Norwegian mountains by airborne lidar on January 15, 1995. Simulations using a mesoscale model reveal that they were caused by mountain-induced gravity waves. The clouds had a highly detailed filamentary structure with bands as thin as 100 m in the vertical, and moved insignificantly over 4 hours, suggesting them to be quasi-stationary. The aircraft flight path was parallel or close to parallel with the wind at cloud level. Such a quasi-Lagrangian observation, together with the presence of distinct aerosol layers, allows an air parcel trajectory through the cloud to be constructed and enables the lidar images to be simulated using a microphysical box model and light scattering calculations. The results yield detailed information about particle evolution in PSCs and suggest that water ice nucleated directly from liquid HNO<sub>3</sub>/H<sub>2</sub>SO<sub>4</sub>/H<sub>2</sub>O droplets as much as 4 K below the ice frost point. The observation of solid nitric acid hydrate particles downwind of the mountains shows that such mesoscale events can generate solid PSC particles that can persist on the synoptic scale. We also draw attention to the possible role of mesoscale PSCs in chlorine activation and subsequent ozone destruction.

Zusätzliche Informationen:LIDO-Berichtsjahr=1999,
Titel:Particle microphysics and chemistry in remotely observed mountain polar stratospheric clouds
AutorenInstitution oder E-Mail-Adresse der Autoren
Carslaw, Kenneth S.MPI für Chemie, Mainz
Wirth, MartinDLR, IPA
Tsias, A.MPI für Chemie, Mainz
Luo, B.P.MPI für Chemie, Mainz
Dörnbrack, AndreasDLR, IPA
Leutbecher, MartinDLR, IPA
Volkert, HansDLR, IPA
Renger, WolfgangDLR, IPA
Bacmeister, Julio T.Naval Research Lab., Washington, DC, USA
Peter, ThomasMPI für Chemie, Mainz
Erschienen in:Journal of Geophysical Research: Atmospheres
Referierte Publikation:Ja
In Open Access:Nein
In ISI Web of Science:Ja
Seitenbereich:Seiten 5785-5796
Stichwörter:mountain waves, lidar, microphysics
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre
Institut für Physik der Atmosphäre > Lidar
Hinterlegt von: elib DLR-Beauftragter
Hinterlegt am:15 Jan 2008
Letzte Änderung:11 Nov 2014 17:22

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