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| Titel |
Cyclogenesis in the lee of Iceland |
| VerfasserIn |
G. N. Petersen, H. Ólafsson |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250026012
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| Zusammenfassung |
| During the Greenland Flow Distortion Experiment (GFDEX), aerial observations were made of a mesocyclone that formed south of the mountains of S-Iceland in northerly low-level flow on 27 February 2007. At the initial stage, the cyclone remained stationary and had the characteristics of a weak wake. In a second stage, the cyclone encounters a middle-tropospheric trough arriving from the region between Iceland and Greenland. Following the encounter, the cyclone deepens and moves eastwards, away from the mountains.
A numerical study of the cyclone, validated by observations from a GFDEX flight, reveals a multiple impact of the topography on the cyclone: the low level wake is initiated in northerly flow impinging Iceland, while the development of the upper trough is associated with channelling of a cold air outbreak by Greenland and Iceland. |
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