http://www.cnr.it/ontology/cnr/individuo/prodotto/ID45075
An observational and numerical analysis of a flash-flood event over south-eastern Italy (Articolo in rivista)
- Type
- Label
- An observational and numerical analysis of a flash-flood event over south-eastern Italy (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.5194/nhess-8-1417-2008 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Miglietta, M.M. and A. Regano (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Institute of Atmospheric Sciences and Climate, Lecce, Italy
Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Rome, Italy (literal)
- Titolo
- An observational and numerical analysis of a flash-flood event over south-eastern Italy (literal)
- Abstract
- A flash-flood episode affecting a small area in
Apulia (south-eastern Italy) on 22 October 2005 is documented.
A rainfall amount of 160mm was recorded in a 6 h
interval in the central part of the region, producing severe
damage and causing six fatalities. Synoptic maps, observations
from surface stations and remote-sensing data are used
here to describe the evolution of the rainfall system. The
vertical profiles show features similar to those observed in
other orographic heavy-rain events, such as a low-level jet,
a conditionally unstable environment, and a nearly saturated
warm low-level air mass. The low hills in the centre of the
region play an important role in the release of the instability
and the localisation of the rainfall, providing the uplift
necessary to the air parcels to reach the level of free convection.
Numerical simulations are performed in order to
understand the mechanisms responsible for the heavy rain
event. The Weather Research and Forecasting model (WRF)
is setup in a 2-way nesting configuration including two domains.
The model is able to realistically simulate the evolution
of the precipitation system and to capture fairly well the
localisation, the amount and the timing of the rainfall. The
simulations suggest the important synergy of low and uppertropospheric
features which act as the triggering mechanism
for the development of convection. A sensitivity experiment
confirms the importance of the orography for the development
of convective cells. (literal)
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- Autore CNR
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