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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  21 Nov 2020

21 Nov 2020

Review status
This preprint is currently under review for the journal ANGEO.

Mesoscale Convective Systems as a source of electromagnetic signals registered by ground-based system and DEMETER satellite

Karol Martynski1, Jan Blecki2, Roman Wronowski2, Andrzej Kulak1, Janusz Mlynarczyk1, and Rafał Iwanski3 Karol Martynski et al.
  • 1Department of Electronics, AGH University of Science and Technology, Kraków, Poland
  • 2Space Research Centre PAS, Warsaw, Poland
  • 3Satellite Remote Sensing Department Institute of Meteorology and Water Management - National Research Institute Cracow, Poland

Abstract. Mesoscale Convective Systems (MCS) are especially visible in the summertime, when there is an advection of warm maritime air from the West. Advection of air masses is enriched by water vapour, which source can be found over the Mediterranean Sea. In propitious atmospheric conditions, thus significant convection, atmospheric instability or strong vertical thermal gradient, lead to the development of strong thunderstorm systems. In this paper we discuss one case of MCS, which generated a significant amount of +CG, -CG and IC discharges. We have focused on the ELF (Extremely Low Frequencies, < 1 kHz) electromagnetic field measurements, since they allow to compute the charge moments of atmospheric discharges. Identification of the MCS is a complex process, due to many variables, which have to be taken into account. For our research we took into consideration a few tools, such as cloud reflectivity, atmospheric soundings and data provided by the PERUN system, which operates in VHF range (113.5–114.5 MHz). Combining described above measurement systems and tools we identified a MCS, which occurred in Poland on 23 July 2009. Furthermore it fulfilled our requirements since the thunderstorm crossed the path of DEMETER overpass.

Karol Martynski et al.

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Karol Martynski et al.

Karol Martynski et al.


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Latest update: 23 Nov 2020
Publications Copernicus
Short summary
The paper focuses on the differentiations between large clasters of thunderstorms and a smaller ones such as supercells. The analysis was also enriched by DEMETER flybys, which granted us with a better insight into the origin of these phenomena. The main conclusion from the paper shows that the more condensed in a matter of size the thunderstorm is the stronger discharges it generates.
The paper focuses on the differentiations between large clasters of thunderstorms and a smaller...