EGU22-331, updated on 26 Mar 2022
https://doi.org/10.5194/egusphere-egu22-331
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Thunderstorm ground enhancements abruptly terminated by a Lightning flash

Ashot Chilingarian and Suren Soghomonyan
Ashot Chilingarian and Suren Soghomonyan
  • Yerevan Physics Institute, Cosmic Ray Physics, Yerevan, Armenia (chili@aragats.am)

Thunderstorm ground enhancements (TGEs) registered on Aragats research station (530 events during  2008-2021) are frequently interrupted by the nearby lightning flashes. We are monitoring charged and neutral particle fluxes, near-surface electric field, distance to lightning flash, and numerous meteorological parameters 24/7. Our datasets [1,2] contains 165 TGEs interrupted mostly by the negative cloud-to-ground discharges (-CGs: 50%, inverted intracloud (IC) flashes followed by –CGs: 21%, inverted ICs: 18%, normal ICs:11%). The mean distance to the lightning flash estimated by EFM-100 electric mill is 5.8 +/- 3.1 km (based on 130 TGEs). Mean distance, estimated by a smaller subsample (18 TGEs) of this dataset, which contains also an estimate made by the worldwide lightning located network (WWLLN) is 6.6 +/- 5.6 km, by EFM – 4.5 +/- 2.6 km. The times of lightning occurrences measured by Aragats facilities and by the WWLLN coincide within a few microseconds. TGEs were interrupted by lightning during positive and negative near-surface electric fields. The TGEs which started at the negative (positive) near-surface electric field and terminated during the positive (negative) electric field were also observed.

How to cite: Chilingarian, A. and Soghomonyan, S.: Thunderstorm ground enhancements abruptly terminated by a Lightning flash, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-331, https://doi.org/10.5194/egusphere-egu22-331, 2022.

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