Energetic Intracloud Lightning in the RELAMPAGO Field Campaign

Abstract A particular strength of lightning remote sensing is the variety of lightning types observed, each with a unique occurrence context and characteristically different emission. Distinct energetic intracloud (EIC) lightning discharges—compact intracloud lightning discharges (CIDs) and energeti...

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Autores principales:	A. L. Antunes de Sá, R. Marshall, W. Deierling
Formato:	article
Lenguaje:	EN
Publicado:	American Geophysical Union (AGU) 2021
Materias:	energetic intracloud lightning Compact Intra‐Cloud Discharges (CID) Energetic In‐Cloud Pulses (EIP) RELAMPAGO Low‐Frequency lightning classification Astronomy QB1-991 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/81c53631f9834610bc55cded05e72395
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spelling	oai:doaj.org-article:81c53631f9834610bc55cded05e723952021-11-23T21:03:06ZEnergetic Intracloud Lightning in the RELAMPAGO Field Campaign2333-508410.1029/2021EA001856https://doaj.org/article/81c53631f9834610bc55cded05e723952021-11-01T00:00:00Zhttps://doi.org/10.1029/2021EA001856https://doaj.org/toc/2333-5084Abstract A particular strength of lightning remote sensing is the variety of lightning types observed, each with a unique occurrence context and characteristically different emission. Distinct energetic intracloud (EIC) lightning discharges—compact intracloud lightning discharges (CIDs) and energetic intracloud pulses (EIPs)—produce intense RF radiation, suggesting large currents inside the cloud, and they also have different production mechanisms and occurrence contexts. A Low‐Frequency (LF) lightning remote sensing instrument array was deployed during the RELAMPAGO field campaign in west central Argentina, designed to investigate convective storms that produce high‐impact weather. LF data from the campaign can provide a valuable data set for researching the lightning context of EICs in a variety of subtropical convective storms. This paper describes the production of an LF‐CID data set in RELAMPAGO and includes a preliminary analysis of CID prevalence. Geolocated lightning events and their corresponding observed waveforms from the RELAMPAGO LF data set are used in the classification of EICs. Height estimates based on skywave reflections are computed, where prefit residual data editing is used to improve robustness against outliers. Even if EIPs occurred within the network, given the low number of very high‐peak current events and receiver saturation, automatic classification of EIPs may not be feasible using this data. The classification of CIDs, on the other hand, is straightforward and their properties, for both positive and negative polarity, are investigated. A few RELAMPAGO case studies are also presented, where high variability of CID prevalence in ordinary storms and high‐altitude positive CIDs, possibly in overshooting tops, are observed.A. L. Antunes de SáR. MarshallW. DeierlingAmerican Geophysical Union (AGU)articleenergetic intracloud lightningCompact Intra‐Cloud Discharges (CID)Energetic In‐Cloud Pulses (EIP)RELAMPAGOLow‐Frequencylightning classificationAstronomyQB1-991GeologyQE1-996.5ENEarth and Space Science, Vol 8, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	energetic intracloud lightning Compact Intra‐Cloud Discharges (CID) Energetic In‐Cloud Pulses (EIP) RELAMPAGO Low‐Frequency lightning classification Astronomy QB1-991 Geology QE1-996.5
spellingShingle	energetic intracloud lightning Compact Intra‐Cloud Discharges (CID) Energetic In‐Cloud Pulses (EIP) RELAMPAGO Low‐Frequency lightning classification Astronomy QB1-991 Geology QE1-996.5 A. L. Antunes de Sá R. Marshall W. Deierling Energetic Intracloud Lightning in the RELAMPAGO Field Campaign
description	Abstract A particular strength of lightning remote sensing is the variety of lightning types observed, each with a unique occurrence context and characteristically different emission. Distinct energetic intracloud (EIC) lightning discharges—compact intracloud lightning discharges (CIDs) and energetic intracloud pulses (EIPs)—produce intense RF radiation, suggesting large currents inside the cloud, and they also have different production mechanisms and occurrence contexts. A Low‐Frequency (LF) lightning remote sensing instrument array was deployed during the RELAMPAGO field campaign in west central Argentina, designed to investigate convective storms that produce high‐impact weather. LF data from the campaign can provide a valuable data set for researching the lightning context of EICs in a variety of subtropical convective storms. This paper describes the production of an LF‐CID data set in RELAMPAGO and includes a preliminary analysis of CID prevalence. Geolocated lightning events and their corresponding observed waveforms from the RELAMPAGO LF data set are used in the classification of EICs. Height estimates based on skywave reflections are computed, where prefit residual data editing is used to improve robustness against outliers. Even if EIPs occurred within the network, given the low number of very high‐peak current events and receiver saturation, automatic classification of EIPs may not be feasible using this data. The classification of CIDs, on the other hand, is straightforward and their properties, for both positive and negative polarity, are investigated. A few RELAMPAGO case studies are also presented, where high variability of CID prevalence in ordinary storms and high‐altitude positive CIDs, possibly in overshooting tops, are observed.
format	article
author	A. L. Antunes de Sá R. Marshall W. Deierling
author_facet	A. L. Antunes de Sá R. Marshall W. Deierling
author_sort	A. L. Antunes de Sá
title	Energetic Intracloud Lightning in the RELAMPAGO Field Campaign
title_short	Energetic Intracloud Lightning in the RELAMPAGO Field Campaign
title_full	Energetic Intracloud Lightning in the RELAMPAGO Field Campaign
title_fullStr	Energetic Intracloud Lightning in the RELAMPAGO Field Campaign
title_full_unstemmed	Energetic Intracloud Lightning in the RELAMPAGO Field Campaign
title_sort	energetic intracloud lightning in the relampago field campaign
publisher	American Geophysical Union (AGU)
publishDate	2021
url	https://doaj.org/article/81c53631f9834610bc55cded05e72395
work_keys_str_mv	AT alantunesdesa energeticintracloudlightningintherelampagofieldcampaign AT rmarshall energeticintracloudlightningintherelampagofieldcampaign AT wdeierling energeticintracloudlightningintherelampagofieldcampaign
_version_	1718416104054849536

Energetic Intracloud Lightning in the RELAMPAGO Field Campaign

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