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Formale Metadaten

Titel
"Arc-clouds" in Thunderstorms
Alternativer Titel
Böenlinien bei Gewittern
Autor
Mitwirkende
Lizenz
Keine Open-Access-Lizenz:
Es gilt deutsches Urheberrecht. Der Film darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Identifikatoren
IWF-SignaturC 1358
Herausgeber
Erscheinungsjahr
Sprache
Andere Version
Produzent
Produktionsjahr1979

Technische Metadaten

IWF-FilmdatenFilm, 16 mm, LT, 60 m ; F, 5 1/2 min

Inhaltliche Metadaten

Fachgebiet
Genre
Abstract
Deutsch
Deutsch
Entstehung und Ausbreitung der Böenlinien von Gewittern ("arc-clouds") werden im Zeichentrick und mit Hilfe von Zeitrafferaufnahmen geostationärer Wettersatelliten erläutert. Interpretation charakteristischer Gewitterformen. Vereinigung einzelner Böenlinien. Tag- und Nachtaufnahmen, u. a. im infraroten Spektralbereich.
Englisch
Englisch
Formation and Propagation of the wind-gust lines of thunderstorms ("arc-clouds") are explained in an animated movie and using time-lapse shots from geostationary weather satellites. Interpretation of characteristic thunderstorm forms. Coupling of single windgust lines. Day and night shots, some in infrared.
Schlagwörter
Deutsch
Deutsch
Englisch
Englisch
IWF-Klassifikation
Deutsch
Deutsch
Englisch
Englisch
Transkript: Englisch(automatisch erzeugt)
Thunderstorms and arc clouds. The mature stage of a thunderstorm is
characterized by an intense updraft and a neighboring downdraft. The cold air produced within the cloud accelerates downward and spreads at the surface. The leading edge of this cold air shows many characteristics of a cold front. It is accompanied by a pronounced squall. Frequently it is
marked by a characteristic arc cloud. Mostly the pseudo cold front moves
faster than the thunderstorm itself. It occurs that it travels more than a hundred kilometres ahead of the thundercloud. From space it appears this
way. The following scene has been prepared from the geostationary satellite Meteosat-1 exhibiting the development of a large thunderstorm
system over Nigeria. The narrow band of convective clouds traveling radially
away from the thunderstorm is an example of a typical arc cloud concurrent with the pseudo cold front of the laterally spreading cold downdraft, the squall. In this case the squall travels to distances of 400
kilometres from the thunderstorm center. In this scene a group of
thunderstorms develops over southern Algeria. They create a number of arc clouds which interfere and finally organize themselves in a larger squall
front. At least three distinct formations of arc clouds can be observed around this thunderstorm cluster. They grow together and in the
direction of 1,000 kilometres in diameter. This is the same scene as
viewed in the infrared spectral range. Thus it becomes possible to trail the further development of the arc cloud structures throughout the following night.