Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets

Autores
Lighezzolo, Rafael Andres; Pereyra, Rodolfo Guillermo; Avila, Eldo Edgardo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In these experiments, the electric charge carried by single particles ejected from the surface of a graupel particle growing by riming was measured. Simulated graupel pellets were grown by accretion of supercooled water drops, at temperatures ranging from-2 to-10 °C in a wind tunnel at air velocities between 5 and 10 m s-1, with the goal of studying the charging of graupel pellets under conditions of secondary ice crystal production (Hallett-Mossop mechanism). The graupel, and induction rings upstream and downstream of the graupel, were connected to electrometers and analyzing circuits of sufficient sensitivity and speed to measure, correlate and display individual charging events. The results suggest that fewer than 1% of the ejected particles carry a measurable electric charge (>2 fC). Further, it was observed that the graupel pellets acquire a positive charge and the average charge of a single splinter ejected is −14 fC. This mechanism of ejection of charged particles seems adequate to account for a positive charge of around 1 pC that individual precipitation particles ofmm- size could acquire in the lower part of the cloud, which in turn could contribute to the lower positive charge region of thunderstorms.
Fil: Lighezzolo, Rafael Andres. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Pereyra, Rodolfo Guillermo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Avila, Eldo Edgardo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Materia
THUNDERSTORNS
ELECTRIC CHARGE
HALLET-MOSSOP
SUPERCOOLED DROPLETS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/190228
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/190228
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Measurements of electric charge separated during the formation of rime by the accretion of supercooled dropletsLighezzolo, Rafael AndresPereyra, Rodolfo GuillermoAvila, Eldo EdgardoTHUNDERSTORNSELECTRIC CHARGEHALLET-MOSSOPSUPERCOOLED DROPLETShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In these experiments, the electric charge carried by single particles ejected from the surface of a graupel particle growing by riming was measured. Simulated graupel pellets were grown by accretion of supercooled water drops, at temperatures ranging from-2 to-10 °C in a wind tunnel at air velocities between 5 and 10 m s-1, with the goal of studying the charging of graupel pellets under conditions of secondary ice crystal production (Hallett-Mossop mechanism). The graupel, and induction rings upstream and downstream of the graupel, were connected to electrometers and analyzing circuits of sufficient sensitivity and speed to measure, correlate and display individual charging events. The results suggest that fewer than 1% of the ejected particles carry a measurable electric charge (>2 fC). Further, it was observed that the graupel pellets acquire a positive charge and the average charge of a single splinter ejected is −14 fC. This mechanism of ejection of charged particles seems adequate to account for a positive charge of around 1 pC that individual precipitation particles ofmm- size could acquire in the lower part of the cloud, which in turn could contribute to the lower positive charge region of thunderstorms.Fil: Lighezzolo, Rafael Andres. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Pereyra, Rodolfo Guillermo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Avila, Eldo Edgardo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaCopernicus Publications2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/190228Lighezzolo, Rafael Andres; Pereyra, Rodolfo Guillermo; Avila, Eldo Edgardo; Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets; Copernicus Publications; Atmospheric Chemistry and Physics; 10; 4; 2-2010; 1661-16691680-73161680-7324CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://acp.copernicus.org/articles/10/1661/2010/info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-10-1661-2010info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:52:58Zoai:ri.conicet.gov.ar:11336/190228instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:52:59.0CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
title Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
spellingShingle Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
Lighezzolo, Rafael Andres
THUNDERSTORNS
ELECTRIC CHARGE
HALLET-MOSSOP
SUPERCOOLED DROPLETS
title_short Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
title_full Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
title_fullStr Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
title_full_unstemmed Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
title_sort Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets
dc.creator.none.fl_str_mv Lighezzolo, Rafael Andres
Pereyra, Rodolfo Guillermo
Avila, Eldo Edgardo
author Lighezzolo, Rafael Andres
author_facet Lighezzolo, Rafael Andres
Pereyra, Rodolfo Guillermo
Avila, Eldo Edgardo
author_role author
author2 Pereyra, Rodolfo Guillermo
Avila, Eldo Edgardo
author2_role author
author
dc.subject.none.fl_str_mv THUNDERSTORNS
ELECTRIC CHARGE
HALLET-MOSSOP
SUPERCOOLED DROPLETS
topic THUNDERSTORNS
ELECTRIC CHARGE
HALLET-MOSSOP
SUPERCOOLED DROPLETS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In these experiments, the electric charge carried by single particles ejected from the surface of a graupel particle growing by riming was measured. Simulated graupel pellets were grown by accretion of supercooled water drops, at temperatures ranging from-2 to-10 °C in a wind tunnel at air velocities between 5 and 10 m s-1, with the goal of studying the charging of graupel pellets under conditions of secondary ice crystal production (Hallett-Mossop mechanism). The graupel, and induction rings upstream and downstream of the graupel, were connected to electrometers and analyzing circuits of sufficient sensitivity and speed to measure, correlate and display individual charging events. The results suggest that fewer than 1% of the ejected particles carry a measurable electric charge (>2 fC). Further, it was observed that the graupel pellets acquire a positive charge and the average charge of a single splinter ejected is −14 fC. This mechanism of ejection of charged particles seems adequate to account for a positive charge of around 1 pC that individual precipitation particles ofmm- size could acquire in the lower part of the cloud, which in turn could contribute to the lower positive charge region of thunderstorms.
Fil: Lighezzolo, Rafael Andres. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Pereyra, Rodolfo Guillermo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Avila, Eldo Edgardo. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomia y Física. Sección Física. Grupo de Física de la Atmosfera; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
description In these experiments, the electric charge carried by single particles ejected from the surface of a graupel particle growing by riming was measured. Simulated graupel pellets were grown by accretion of supercooled water drops, at temperatures ranging from-2 to-10 °C in a wind tunnel at air velocities between 5 and 10 m s-1, with the goal of studying the charging of graupel pellets under conditions of secondary ice crystal production (Hallett-Mossop mechanism). The graupel, and induction rings upstream and downstream of the graupel, were connected to electrometers and analyzing circuits of sufficient sensitivity and speed to measure, correlate and display individual charging events. The results suggest that fewer than 1% of the ejected particles carry a measurable electric charge (>2 fC). Further, it was observed that the graupel pellets acquire a positive charge and the average charge of a single splinter ejected is −14 fC. This mechanism of ejection of charged particles seems adequate to account for a positive charge of around 1 pC that individual precipitation particles ofmm- size could acquire in the lower part of the cloud, which in turn could contribute to the lower positive charge region of thunderstorms.
publishDate 2010
dc.date.none.fl_str_mv 2010-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/190228
Lighezzolo, Rafael Andres; Pereyra, Rodolfo Guillermo; Avila, Eldo Edgardo; Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets; Copernicus Publications; Atmospheric Chemistry and Physics; 10; 4; 2-2010; 1661-1669
1680-7316
1680-7324
CONICET Digital
CONICET
url http://hdl.handle.net/11336/190228
identifier_str_mv Lighezzolo, Rafael Andres; Pereyra, Rodolfo Guillermo; Avila, Eldo Edgardo; Measurements of electric charge separated during the formation of rime by the accretion of supercooled droplets; Copernicus Publications; Atmospheric Chemistry and Physics; 10; 4; 2-2010; 1661-1669
1680-7316
1680-7324
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://acp.copernicus.org/articles/10/1661/2010/
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-10-1661-2010
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Copernicus Publications
publisher.none.fl_str_mv Copernicus Publications
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613622642245632
score 13.070432

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