Publication:
Temporal characteristics of positive cloud-to-ground flashes from tropical thunderstorms

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dc.citedby0
dc.contributor.authorSabri M.H.M.en_US
dc.contributor.authorAhmad M.R.en_US
dc.contributor.authorTakayanagi Y.en_US
dc.contributor.authorBaharin S.A.S.en_US
dc.contributor.authorMorimoto T.en_US
dc.contributor.authorKawasaki Z.-I.en_US
dc.contributor.authorBaharuddin M.Z.en_US
dc.contributor.authorAziz M.Z.A.A.en_US
dc.contributor.authorAbdullah M.en_US
dc.contributor.authorCooray V.en_US
dc.contributor.authorid57200560218en_US
dc.contributor.authorid58861819300en_US
dc.contributor.authorid54413056000en_US
dc.contributor.authorid57206727343en_US
dc.contributor.authorid55359062800en_US
dc.contributor.authorid36916954400en_US
dc.contributor.authorid35329255600en_US
dc.contributor.authorid56586151300en_US
dc.contributor.authorid7103393418en_US
dc.contributor.authorid7005428121en_US
dc.date.accessioned2025-03-03T07:42:00Z
dc.date.available2025-03-03T07:42:00Z
dc.date.issued2024
dc.description.abstractThe occurrence of positive cloud-to-ground (CG) lightning flashes proves to be a challenging task when compared to the negative CG flash which common happen in tropical region. This due to the positively charged clouds to reach higher altitudes to enable the transfer of electrical charges to the Earth's surface. With several sensors that deployed in the Malacca region (2.314077�N, 102.318282�E) such as the wide band fast and slow antenna, magnetic field sensors, and the electric field mill (EFM-100). This research study focuses on the temporal characteristics of positive CG lightning activity in the tropical region during September and October 2021. A total of 203 positive cloud-to-ground flashes were meticulously analyzed in the context of 16 thunderstorm events. Key findings highlight the consistent initiation of positive cloud-to-ground flashes through initial breakdown (IB) pulses, followed by the development of stepped leaders and subsequent return strokes. Notably, most positive cloud-to-ground events (72%) were observed as single strokes and the maximum multiplicity recorded being four subsequent return strokes. Furthermore, the analysis focuses into the temporal aspects of these lightning events, revealing average durations for various parameters, including rise-time (6.26 ?s), zero-crossing (26.43 ?s), pulse duration of the first RS (139.76 ?s), and the interval from the first IB to the first return stroke (134.19 ms). Additionally, the recorded data from the Electric Field Mill (EFM) instruments together with Constant Altitude Plan Position Indicator (CAPPI) radar demonstrate a notable correlation. Specifically, the electric field (E-field) values exhibit a discernible increase when positive cloud-to-ground lightning events are detected near the lightning sensor. ? 2024 Elsevier B.V.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo107549
dc.identifier.doi10.1016/j.atmosres.2024.107549
dc.identifier.scopus2-s2.0-85197404316
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85197404316&doi=10.1016%2fj.atmosres.2024.107549&partnerID=40&md5=7a79faad0c7d5f134d3b97b366fe4bc8
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36341
dc.identifier.volume309
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleAtmospheric Research
dc.subjectAntennas
dc.subjectClouds
dc.subjectLightning
dc.subjectTropics
dc.subjectCloud movement activity
dc.subjectCloud movements
dc.subjectCloud-to-ground lightning
dc.subjectElectric field mill
dc.subjectMagnetic direct finder
dc.subjectPositive cloud-to-ground flashes
dc.subjectReturn stroke
dc.subjectTemporal characteristics
dc.subjectTropical regions
dc.subjectTropical thunderstorm
dc.subjectcloud microphysics
dc.subjectelectric field
dc.subjectlightning
dc.subjectmagnetic anomaly
dc.subjectthunderstorm
dc.subjectThunderstorms
dc.titleTemporal characteristics of positive cloud-to-ground flashes from tropical thunderstormsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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