Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales

In the early 1900’s, J.W. Whipple began validating C.R. Wilson’s Global Electric Circuit (GEC) hypothesis by correlating diurnal variations of global thunder days with diurnal variations of the fair weather electric field. This study applies 16+ years of Precipitation Feature (PF) data from the Trop...

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Main Author: Lavigne, Thomas
Other Authors: Liu, Chuntao, Xie, Feiqin, Shinoda, Toshiaki
Format: Thesis
Language:English
Published: 2017
Subjects:
Atmospheric Electricity
ENSO
Global Electric Circuit
Lightning
Thunderstorms
Antarc*
Antarctica
Online Access:http://hdl.handle.net/1969.6/19199
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record_format openpolar
spelling fttexasamucorpus:oai:tamucc-ir.tdl.org:1969.6/19199 2023-10-25T01:30:23+02:00 Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales Lavigne, Thomas Liu, Chuntao Xie, Feiqin Shinoda, Toshiaki 2017-08 58 pages application/pdf http://hdl.handle.net/1969.6/19199 en_US eng http://hdl.handle.net/1969.6/19199 This material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher. Atmospheric Electricity ENSO Global Electric Circuit Lightning Thunderstorms Text Thesis 2017 fttexasamucorpus 2023-09-25T10:26:58Z In the early 1900’s, J.W. Whipple began validating C.R. Wilson’s Global Electric Circuit (GEC) hypothesis by correlating diurnal variations of global thunder days with diurnal variations of the fair weather electric field. This study applies 16+ years of Precipitation Feature (PF) data from the Tropical Rainfall Measuring Mission (TRMM), including lightning data from the Lightning Imaging Sensor (LIS), alongside 12-years of electric field measurements from Vostok, Antarctica to further examine this relationship. Joint diurnal-seasonal variations of the electric field are compared with PF parameters that are potentially related to the GEC. The flash rate and volume of 30 dBZ between -5oC and -35oC variables are shown to have the best direct relationship to the electric field, with r2 values of 0.67 and 0.62, respectively. However, the Coefficient of Variation (COV) of the flash rate (28%) and the electric field (12%), display relatively large differences in the spread of the variables. The volume of 30 dBZ between -5oC and -35oC shows a closer amplitude agreement to the variance of the electric field (COV=17%). Furthermore, these relationships are analyzed during two different phases of the El Nino Southern Oscillation (ENSO). Results show different seasonal-diurnal variations of the electric field during ENSO phases, with enhancements in the electric field between January through April at 16-24 UTC in La Nina years. In all, similar variations have been found in the fair weather electric field, and the variation of properties of global PFs with high potential of electrification at diurnal, seasonal, and interannual timescales. These confirm the dominant role of the global thunderclouds and electrified clouds in the global electric circuit. Physical and Environmental Sciences College of Science and Engineering Thesis Antarc* Antarctica Texas A&M University - Corpus Christi: DSpace Repository
institution Open Polar
collection Texas A&M University - Corpus Christi: DSpace Repository
op_collection_id fttexasamucorpus
language English
topic Atmospheric Electricity
ENSO
Global Electric Circuit
Lightning
Thunderstorms
spellingShingle Atmospheric Electricity
ENSO
Global Electric Circuit
Lightning
Thunderstorms
Lavigne, Thomas
Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
topic_facet Atmospheric Electricity
ENSO
Global Electric Circuit
Lightning
Thunderstorms
description In the early 1900’s, J.W. Whipple began validating C.R. Wilson’s Global Electric Circuit (GEC) hypothesis by correlating diurnal variations of global thunder days with diurnal variations of the fair weather electric field. This study applies 16+ years of Precipitation Feature (PF) data from the Tropical Rainfall Measuring Mission (TRMM), including lightning data from the Lightning Imaging Sensor (LIS), alongside 12-years of electric field measurements from Vostok, Antarctica to further examine this relationship. Joint diurnal-seasonal variations of the electric field are compared with PF parameters that are potentially related to the GEC. The flash rate and volume of 30 dBZ between -5oC and -35oC variables are shown to have the best direct relationship to the electric field, with r2 values of 0.67 and 0.62, respectively. However, the Coefficient of Variation (COV) of the flash rate (28%) and the electric field (12%), display relatively large differences in the spread of the variables. The volume of 30 dBZ between -5oC and -35oC shows a closer amplitude agreement to the variance of the electric field (COV=17%). Furthermore, these relationships are analyzed during two different phases of the El Nino Southern Oscillation (ENSO). Results show different seasonal-diurnal variations of the electric field during ENSO phases, with enhancements in the electric field between January through April at 16-24 UTC in La Nina years. In all, similar variations have been found in the fair weather electric field, and the variation of properties of global PFs with high potential of electrification at diurnal, seasonal, and interannual timescales. These confirm the dominant role of the global thunderclouds and electrified clouds in the global electric circuit. Physical and Environmental Sciences College of Science and Engineering
author2 Liu, Chuntao
Xie, Feiqin
Shinoda, Toshiaki
format Thesis
author Lavigne, Thomas
author_facet Lavigne, Thomas
author_sort Lavigne, Thomas
title Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
title_short Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
title_full Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
title_fullStr Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
title_full_unstemmed Relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
title_sort relationship between the global electric circuit and electrified cloud parameters at diurnal, seasonal and interannual timescales
publishDate 2017
url http://hdl.handle.net/1969.6/19199
genre Antarc*
Antarctica
genre_facet Antarc*
Antarctica
op_relation http://hdl.handle.net/1969.6/19199
op_rights This material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher.
_version_ 1780738924012896256

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