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| Titel |
Using a cloud electrification model to study relationships between lightning activity and cloud microphysical structure |
| VerfasserIn |
M. Formenton, G. Panegrossi, D. Casella, S. Dietrich, A. Mugnai, P. Sanò, F. Paola, H.-D. Betz, C. Price, Y. Yair |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 4 ; Nr. 13, no. 4 (2013-04-24), S.1085-1104 |
| Datensatznummer |
250018417
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| Publikation (Nr.) |
 copernicus.org/nhess-13-1085-2013.pdf |
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| Zusammenfassung |
| In this study a one-dimensional numerical cloud electrification model,
called the Explicit Microphysics Thunderstorm Model (EMTM), is used to find
quantitative relationships between the simulated electrical activity and
microphysical properties in convective clouds. The model, based on an
explicit microphysics scheme coupled to an ice–ice noninductive
electrification scheme, allows us to interpret the connection of cloud
microphysical structure with charge density distribution within the cloud,
and to study the full evolution of the lightning activity (intracloud and
cloud-to-ground) in relation to different environmental conditions. Thus, we
apply the model to a series of different case studies over continental
Europe and the Mediterranean region. We first compare, for selected case
studies, the simulated lightning activity with the data provided by the ground-based
Lightning Detection Network (LINET) in order to verify the reliability of the model and its
limitations, and to assess its ability to reproduce electrical activity
consistent with the observations. Then, using all simulations, we find a
correlation between some key microphysical properties and cloud
electrification, and derive quantitative relationships relating simulated
flash rates to minimum thresholds of graupel mass content and updrafts.
Finally, we provide outlooks on the use of such relationships and comments
on the future development of this study. |
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