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| Titel |
Rainfall events and Hailstorms Analysis Program (RHAP) |
| VerfasserIn |
M. Ceperuelo, M. C. Llasat, T. Rigo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 7th Plinius Conference on Mediterranean Storms (2005) ; Nr. 7 (2006-03-08), S.205-213 |
| Datensatznummer |
250004294
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| Publikation (Nr.) |
 copernicus.org/adgeo-7-205-2006.pdf |
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| Zusammenfassung |
| RHAP (Rainfall events and Hailstorms Analysis Program) is a new tool
designed for analysing rainfall events and hailstorms. The aim of this
contribution is to present the RHAP tool, which is under development, and
its application to different hailstorms and rainfall episodes. The program
assimilates multiple data bases (meteorological radar, meteorological model
outputs, radiosondes and surface observations) with the purpose to get
better event reanalysis. It is based on Storm Cell Identification and
Tracking Algorithm (SCIT) with an improved version of the method, and also
on a new 2-D algorithm which automatically identifies and classifies the
precipitation systems distinguishing between Mesoscale Convective Systems,
Multicellular systems, Isolated convection, Stratiform precipitation and
Convective precipitation embedded in stratiform precipitation. These two
methods allow to obtain the 2-D and 3-D features of the precipitation system
like top height of the cells, maximum reflectivity, Vertical Integrated
Liquid content (VIL) and VIL density (VILD), kinetic energy, severe hail
probability (SHP), number of 3-D cells exceeding a given threshold, Z/R
relations,... that are useful to analyse both heavy rainfall and hail
events. As application, two events produced on NE Spain are discussed: the
heavy rainfall event recorded on 6 September 2004, characterised by a
great number of cells that crossed the affected area and that had a maximum
activity associated to high values of VIL(37.5 kg/m2), Zmax (54 dBZ) and
SHP (73%); and the hail event produced on 29 August 2004, with a rapid
development of the convective system and with hail observations in surface
when the following thresholds were exceeded: Zmax=54 dBZ, VIL=25 kg/m2 and SHP=63%. |
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