The objective weather type classification of the German Weather Service and its possibilities of application to environmental and meteorological investigations

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Abstract:

The objective weather type classification of the German weather service and its application possibilities are described. Meteorological criteria for this classification are the advection of air masses, the cyclonality and the humidity of the troposphere, leading to numerical indices from which the weather types are derived. The data basis is the numerical weather analysis and forecast system of the German Weather Service. A time series of the weather type data covering more than 20 years is available now. The classification area is Germany, in principle it can be transferred to other areas as well. There are 40 different weather types, but the numerical indices provide the possibility to enlarge or to reduce the number of types without changing the meteorological criteria. This makes the classification very flexible for individual users. Various applications of this weather type classification are listed. A regularly weather type monitoring via INTERNET has been realized.

Die objektive Wetterlagenklassifikation des Deutschen Wetterdienstes und deren Anwendungsmo¨glichkeiten werden beschrieben. Meteorologische Kriterien fu¨r diese Klassifikation sind die Advektion von Luftmassen, die Zyklonalita¨t und die Feuchte der Tropospha¨re. Dies fu¨hrt zu numerischen Indizes, aus denen die Wetterlagenklassen abgeleitet werden. Die Datenbasis ist das numerische Wetteranalysen- und-vorhersagesystem des Deutschen Wetterdienstes. Eine Zeitreihe der Wetterlagenklassen u¨ber mehr als 20 Jahre ist nun verfu¨gbar. Das Klassifikationsgebiet ist Deutschland, es kann prinzipiell auch auf andere Gebiete u¨bertragen werden. Es werden 40 verschiedene Wetterlagenklassen unterschieden, aber die numerischen Indizes ermo¨glichen es, die Zahl der Klassen zu erweitern oder zu reduzieren, ohne die meteorologischen Kriterien zu vera¨ndern, wodurch die Klassifikation fu¨r individuelle Nutzer sehr flexibel ist. Verschiedene Anwendungen dieser Wetterlagenklassifikation werden aufgelistet. Eine regelma¨ßige Wetterlagen-U¨berwachung u¨ber das INTERNET ist bereits realisiert worden.

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Document Type: Research Article

DOI: http://dx.doi.org/10.1127/0941-2948/2001/0010-0253

Publication date: July 1, 2001

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  • Meteorologische Zeitschrift (originally founded in 1866) is the joint periodical of the meteorological societies of Austria, Germany and Switzerland. It accepts high-quality peer-reviewed manuscripts on all aspects of observational, theoretical and computational research out of the entire field of meteorology, including climatology. Meteorologische Zeitschrift represents a natural forum for the meteorological community of Central Europe and worldwide.
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