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Titel |
A case study of formation and maintenance of a lower stratospheric cirrus cloud over the tropics |
VerfasserIn |
M. Sandhya, S. Sridharan, M. Indira Devi, K. Niranjan, A. Jayaraman |
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 ; 33, no. 5 ; Nr. 33, no. 5 (2015-05-29), S.599-608 |
Datensatznummer |
250121200
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Publikation (Nr.) |
copernicus.org/angeo-33-599-2015.pdf |
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Zusammenfassung |
A rare occurrence of stratospheric cirrus at 18.6 km height persisting for about 5
days during 3–7 March 2014 is inferred from the ground-based Mie lidar
observations over Gadanki (13.5° N, 79.2° E) and
spaceborne observations. Due to the vertical transport by large updrafts on
3 March in the troposphere, triggered by a potential vorticity intrusion,
the water vapour mixing ratio shows an increase around the height of 18.6 km. Relative
humidity with respect to ice is ~ 150%, indicating that the
cirrus cloud may be formed though homogeneous nucleation of sulfuric acid.
The cirrus cloud persists due to the cold anomaly associated with the
presence of a 4-day wave. |
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