A statistical analysis of sounding derived indices and parameters for extreme and non-extreme thunderstorm events over Cyprus
The main purpose of this study is to provide a simple statistical analysis of several stability indices and parameters for extreme and non-extreme thunderstorm events during the period 1997 to 2001 in Cyprus. For this study, radiosonde data from Athalassa station (35°1´ N, 33°4´ E) were analyzed dur...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2010-06-01
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| Series: | Advances in Geosciences |
| Online Access: | http://www.adv-geosci.net/23/79/2010/adgeo-23-79-2010.pdf |
| Summary: | The main purpose of this study is to provide a simple
statistical analysis of several stability indices and
parameters for extreme and non-extreme thunderstorm events
during the period 1997 to 2001 in Cyprus. For this study,
radiosonde data from Athalassa station (35°1´ N,
33°4´ E) were analyzed during the aforementioned
period. The stability indices and parameters set under study
are the K index, the Total Totals (TT) index, the Convective
Available Potential Energy related parameters such as
Convective Available Potential Energy (CAPE),
Downdraft CAPE (DCAPE) and the Convective Inhibition (CIN), the Vorticity
Generator Parameter (VGP), the Bulk Richardson Number (BRN),
the BRN Shear and the Storm Relative Helicity (SRH). An
event is categorized as extreme, if primarily, CAPE was non
zero and secondary, if values of both the K and the
TotalTotals (TT) indices exceeded 26.9 and 50, respectively.
The cases with positive CAPE but lower values of the other
indices, were identified as non-extreme. By calculating the
median, the lower and upper limits, as well as the lower and
upper quartiles of the values of these indices, the main
characteristics of their distribution were determined. |
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| ISSN: | 1680-7340 1680-7359 |