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Thunderstorm charge structures favouring cloud-to-ground lightning
dc.contributor.author | Salvador Yuste, Albert |
dc.contributor.author | Pineda Rüegg, Nicolau |
dc.contributor.author | Montañá Puig, Juan |
dc.contributor.author | Solà de las Fuentes, Glòria |
dc.contributor.other | Universitat Politècnica de Catalunya. Doctorat en Enginyeria Elèctrica |
dc.date.accessioned | 2021-10-27T08:58:22Z |
dc.date.available | 2023-08-10T00:29:54Z |
dc.date.issued | 2021-08 |
dc.identifier.citation | Salvador, A. [et al.]. Thunderstorm charge structures favouring cloud-to-ground lightning. "Atmospheric research", Agost 2021, vol. 257, p. 105577:1-105577:16. |
dc.identifier.issn | 0169-8095 |
dc.identifier.uri | http://hdl.handle.net/2117/354656 |
dc.description.abstract | Thunderstorm electrical structures favouring cloud-to-ground lightning were investigated through a Lightning Mapping Array (LMA), an accurate three-dimensional lightning location system that allows inferring the heights of the regions of charge. The present study focused on classical, convective-scale thunderstorms, aiming to shed new light on how the charge structure affects lightning production, especially the cloud-to-ground fraction, including flash rate and polarity. Results showed that lightning flashes mainly initiate at two levels, around -41 °C (9,150 m MSL) and around -7 °C height (4,730 m MSL). These initiation levels, located between the dominant positive and negative charge regions, allowed to define three main charge structures: an upper dipole (positive above negative), a classical tripole and a lower dipole (negative above positive). Several differences were found between the three categories in terms of the cloud-to-ground lightning production: (i) the classical tripole structure is the one presenting a higher cloud-to-ground flash rate (5.2 flashes·min-1); (ii) in terms of intensity, the presence of an upper positive charge region is more relevant than a lower positive below the main mid negative; (iii) conversely, the lower positive favours higher cloud-to-ground peak currents; (iv) A higher upper positive charge region favours a higher cloud-to-ground rate. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria elèctrica |
dc.subject.lcsh | Atmospheric electricity |
dc.subject.other | Atmospheric electricity |
dc.subject.other | Lightning mapping array |
dc.subject.other | Cloud-to-ground flash rate |
dc.subject.other | Electrification |
dc.subject.other | Thunderstorm electrical structure |
dc.title | Thunderstorm charge structures favouring cloud-to-ground lightning |
dc.type | Article |
dc.subject.lemac | Electricitat atmosfèrica |
dc.contributor.group | Universitat Politècnica de Catalunya. LRG - Lightning Research Group |
dc.identifier.doi | 10.1016/j.atmosres.2021.105577 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0169809521001290 |
dc.rights.access | Open Access |
local.identifier.drac | 31943384 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Salvador, A.; Pineda, N.; Montanya, J.; Sola, G. |
local.citation.publicationName | Atmospheric research |
local.citation.volume | 257 |
local.citation.startingPage | 105577:1 |
local.citation.endingPage | 105577:16 |
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