| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | plutao.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 8JMKD3MGP3W/3GDQK87 |
| Repositório | sid.inpe.br/plutao/2014/06.03.21.43.44 |
| Última Atualização | 2014:09.18.16.48.24 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/plutao/2014/06.03.21.43.45 |
| Última Atualização dos Metadados | 2018:06.04.23.39.31 (UTC) administrator |
| Rótulo | lattes: 4161737266837399 2 SaraivaCaAlPiZeBu:2014:EsReLe |
| Chave de Citação | SaraivaCaAlPiZeBu:2014:EsReLe |
| Título | Estimates of recoil leaders peak currents based on high-speed video observations  |
| Formato | DVD |
| Projeto | FAPESP (under grant numbers 08/56711-4, 2010/01742-2 and partially by 2009/15235-8). |
| Ano | 2014 |
| Data de Acesso | 28 abr. 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 1258 KiB |
| 2. Contextualização | |
| Autor | 1 Saraiva, Antônio Carlos V. 2 Campos, Leandro Zanella de Souza 3 Alves, Jéferson 4 Pinto Jr., Osmar 5 Zepka, Gisele dos Santos 6 Buzato, Tiago Santos |
| Grupo | 1 2 DGE-CEA-INPE-MCTI-GOV-BR 3 GES-CEA-SPG-INPE-MCTI-GOV-BR 4 CST-CST-INPE-MCTI-GOV-BR 5 DGE-CEA-INPE-MCTI-GOV-BR 6 YYY-CEA-INPE-MCTI-GOV-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Endereço de e-Mail do Autor | 1 acvsaraiva@gmail.com 2 leandro.zanella@gmail.com 3 4 osmar@dge.inpe.br 5 gisele.zepka@inpe.br |
| Endereço de e-Mail | marcelo.pazos@inpe.br |
| Nome do Evento | International Lightning Detection Conference, 23 (ILDC); and International Lightning Meteorology Conference, 5 (ILMC). |
| Localização do Evento | Tucson |
| Data | mar. 18-19, 2014 / mar. 20-21, 2014 |
| Editora (Publisher) | Vaisala |
| Volume | 1 |
| Título do Livro | Proceedings |
| Tipo Terciário | Paper |
| Histórico (UTC) | 2014-06-03 21:43:45 :: lattes -> administrator :: 2018-06-04 23:39:31 :: administrator -> marcelo.pazos@inpe.br :: 2014 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | atmospheric electricity recoil leaders high-speed video observations lightning |
| Resumo | During the summer season of 2012, a network of high-speed cameras, called RAMMER network, recorded two bipolar flashes produced by a thunderstorm that occurred on March 13th. Data from BrasilDAT network provided location and peak current information for the events. Additional RAW data from the sensors, allowed more detailed analyses. Both bipolar flashes presented multiple negative return strokes, and there was intense recoil leader activity bellow cloud base. The objective of this work is the evaluation of the peak currents of those recoil leaders. The bipolar nature of these flashes allowed a unique way to calibrate the camera luminosity with the stroke peak currents estimated by the local lightning location system (LLS). Recoil leaders are commonly visible below cloud base during positive flashes development, but have not yet been observed during negative flashes in a similar fashion. The bipolar flashes observed had one positive return stroke and multiple negative return strokes that were used in the calibration process. In order to evaluate the recoil leaders peak current, the luminosity levels of each video were calibrated using the unsaturated pixel brightness levels during the negative return strokes and the data from the BrasilDAT LLS. The same high-speed camera used during the observation campaign was tested in laboratory to determine its CMOS sensor response curve. Through a scatter diagram of luminosity (estimated from the pixel intensity values) versus estimated peak current (provided by the BrasilDAT network), it was shown that both physical quantities are related. The calibrated pixel values were used to create equations to calculate the recoil leader peak currents. A total of 281 recoil leaders were identified, 191 in flash #1 and 90 in flash #2. Results show that recoil leader estimates are closely related to previous observations of cloud discharges by LLS. The geometric mean value was 1.06 kA, with a maximum of 7.7 kA. Less than 14% presented peak currents comparable to weak return strokes (> 2 kA). |
| Área | CEA |
| Arranjo 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > Estimates of recoil... |
| Arranjo 2 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > Estimates of recoil... |
| Arranjo 3 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > Estimates of recoil... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| URL dos dados | http://urlib.net/ibi/8JMKD3MGP3W/3GDQK87 |
| URL dos dados zipados | http://urlib.net/zip/8JMKD3MGP3W/3GDQK87 |
| Idioma | en |
| Arquivo Alvo | Saraiva et al-Estimates of recoil leader peak currents based on high-speed video observations-2014-ILDC-ILMC.pdf |
| Grupo de Usuários | lattes marcelo.pazos@inpe.br |
| Grupo de Leitores | administrator marcelo.pazos@inpe.br |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Repositório Espelho | iconet.com.br/banon/2006/11.26.21.31 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3EU29DP 8JMKD3MGPCW/3F2PBEE 8JMKD3MGPCW/3F3T29H |
| URL (dados não confiáveis) | http://www.vaisala.com/en/events/ildcilmc/Documents/2014%20ILDC-ILMC%20Agenda.pdf |
| Acervo Hospedeiro | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notas | |
| Notas | Informações Adicionais: During the summer season of 2012, a network of high-speed cameras, called RAMMER network, recorded two bipolar flashes produced by a thunderstorm that occurred on March 13th. Data from BrasilDAT network provided location and peak current information for the events. Additional RAW data from the sensors, allowed more detailed analyses. Both bipolar flashes presented multiple negative return strokes, and there was intense recoil leader activity bellow cloud base. The objective of this work is the evaluation of the peak currents of those recoil leaders. The bipolar nature of these flashes allowed a unique way to calibrate the camera luminosity with the stroke peak currents estimated by the local lightning location system (LLS). Recoil leaders are commonly visible below cloud base during positive flashes development, but have not yet been observed during negative flashes in a similar fashion. The bipolar flashes observed had one positive return stroke and multiple negative return strokes that were used in the calibration process. In order to evaluate the recoil leaders peak current, the luminosity levels of each video were calibrated using the unsaturated pixel brightness levels during the negative return strokes and the data from the BrasilDAT LLS. The same high-speed camera used during the observation campaign was tested in laboratory to determine its CMOS sensor response curve. Through a scatter diagram of luminosity (estimated from the pixel intensity values) versus estimated peak current (provided by the BrasilDAT network), it was shown that both physical quantities are related. The calibrated pixel values were used to create equations to calculate the recoil leader peak currents. A total of 281 recoil leaders were identified, 191 in flash #1 and 90 in flash #2. Results show that recoil leader estimates are closely related to previous observations of cloud discharges by LLS. The geometric mean value was 1.06 kA, with a maximum of 7.7 kA. Less than 14% presented peak. |
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi edition editor isbn issn lineage mark nextedition numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress publisheraddress resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark type |
| 7. Controle da descrição | |
| e-Mail (login) | marcelo.pazos@inpe.br |
| atualizar | |