Preprints
https://doi.org/10.5194/angeo-2020-64
https://doi.org/10.5194/angeo-2020-64

  21 Nov 2020

21 Nov 2020

Review status: a revised version of this preprint was accepted for the journal ANGEO and is expected to appear here in due course.

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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Status: closed
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Karol Martynski et al.

Karol Martynski et al.

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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.