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| Titel |
The noctilucent cloud (NLC) display during the ECOMA/MASS sounding rocket flights on 3 August 2007: morphology on global to local scales |
| VerfasserIn |
G. Baumgarten, J. Fiedler, K. H. Fricke, M. Gerding, M. Hervig, P. Hoffmann, N. Müller, P.-D. Pautet, M. Rapp, C. Robert, D. Rusch, C. Savigny, W. Singer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 3 ; Nr. 27, no. 3 (2009-03-02), S.953-965 |
| Datensatznummer |
250016430
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| Publikation (Nr.) |
 copernicus.org/angeo-27-953-2009.pdf |
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| Zusammenfassung |
| During the ECOMA/MASS rocket campaign large scale NLC/PMC was observed by
satellite, lidar and camera from polar to mid latitudes. We examine the
observations from different instruments to investigate the morphology of the
cloud. Satellite observations show a planetary wave 2 structure. Lidar
observations from Kühlungsborn (54° N), Esrange (68° N) and
ALOMAR (69° N) show a highly dynamic NLC layer. Under favorable solar
illumination the cloud is also observable by ground-based cameras. The cloud
was detected by cameras from Trondheim (63° N), Juliusruh
(55° N) and Kühlungsborn. We investigate planetary scale morphology
and local scale gravity wave structures, important for the interpretation of
the small scale rocket soundings. We compare in detail the lidar observations
with the NLC structure observed by the camera in Trondheim. The ALOMAR
RMR-lidar observed only a faint NLC during the ECOMA launch window, while the
camera in Trondheim showed a strong NLC display in the direction of ALOMAR.
Using the high resolution camera observations (t~30 s, Δx<5 km) and the wind information from the meteor radar at ALOMAR we
investigate the formation and destruction of NLC structures. We observe that
the NLC brightness is reduced by a factor of 20–40 within 100 s which
can be caused by a temperature about 15 K above the frostpoint temperature.
A horizontal temperature gradient of more than 3 K/km is estimated. |
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