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| Titel |
Study of 11 September 2004 hailstorm event using radar identification of 2-D systems and 3-D cells |
| VerfasserIn |
M. Ceperuelo, M. C. Llasat, L. López, E. García-Ortega, J. L. Sánchez |
| 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.215-222 |
| Datensatznummer |
250004295
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| Publikation (Nr.) |
 copernicus.org/adgeo-7-215-2006.pdf |
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| Zusammenfassung |
| The most important hail event recorded in the region of the Ebro Valley (NE
Spain) in 2004 was the 11 September episode. Large hailstones (some of them
with a diameter of over 30 mm) caused important damages in agriculture and
properties. The hail event affected an area of 3848 ha and was caused by
several multicellular systems. The aim of this paper is the analysis of the
associated convective structures using the meteorological radar as well as
the MM5 mesoscale model, thermodynamic data and a hailpad network. To
achieve this end, the new hailstorm analysis tool RHAP (Rainfall events and
Hailstorms Analysis Program) has been applied. It identifies tracks and
characterises precipitation systems and convective cells, taking into
account 2-D and 3-D structures. The event has also been studied with the
TITAN software (Thunderstorm Identification, Tracking, Analysis and
Nowcasting) in an attempt to compare both methods. Results show that the
episode had a strong convective activity with CAPE values over 4000 J/kg and
with hail-forming cells characterised by VIL (Vertical Integrated Liguid)
exceeding 40 kg/m2, VILD (VIL density) over 4 g/m3, HP (Hail
Probability) of 100% and SHP (Severe Hail Probability) of over 75%.
The hail cells evolved into multicellular systems that lasted between 70 and
90 min. Finally, the comparison of RHAP and TITAN has shown significant
correlations between methods. |
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