publication . Article . 2014

Thunderstorms caused by southern cyclones in Estonia

K Mändla; S-E Enno; M Sepp;
Open Access English
  • Published: 01 May 2014 Journal: Estonian Journal of Earth Sciences (issn: 1736-4728, eissn: 1736-7557, Copyright policy)
  • Publisher: Estonian Academy Publishers
Abstract
The relationships between the frequency and duration of thunderstorms, lightning and southern cyclones over Estonia are presented for the period 1950-2010. A total of 545 southern cyclones and 2106 thunderstorm days were detected, whereas 11.3% of the observed thunder days were associated with southern cyclones. At the same time, 29.2% of all southern cyclones were accompanied by thunderstorms. In the thunder season, however, this percentage was much higher, reaching up to 80% in summer months. The number of thunder days was largest when the centres of southern cyclones passed a measuring station at a distance less than 500 km. The number of cloud-to-ground ligh...
Subjects
free text keywords: southern cyclone, thunderstorm, cyclone frequency, duration of thunderstorm, Estonia., Geology, QE1-996.5, General Earth and Planetary Sciences, Water Science and Technology
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