| 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 | J8LNKAN8RW/3CF9LPL | |||
| Repositório | dpi.inpe.br/plutao/2012/08.17.12.03 | |||
| Última Atualização | 2012:08.17.12.06.36 (UTC) secretaria.cpa@dir.inpe.br | |||
| Repositório de Metadados | dpi.inpe.br/plutao/2012/08.17.12.03.50 | |||
| Última Atualização dos Metadados | 2018:06.05.00.01.51 (UTC) administrator | |||
| Rótulo | lattes: 4161737266837399 1 CamposSabaKrid:2012:MaReLe | |||
| Chave de Citação | PintoJr:2012:PrFuAc | |||
| Título | The sensitivity of the thunderstorm activity in the city of são paulo to temperature changes: predicting the future activity for different scenarios  | |||
| Formato | DVD | |||
| Ano | 2012 | |||
| Data de Acesso | 18 maio 2024 | |||
| Tipo Secundário | PRE CI | |||
| Número de Arquivos | 1 | |||
| Tamanho | 816 KiB | |||
| 2. Contextualização | ||||
| Autor | Pinto Jr., Osmar | |||
| Grupo | CST-CST-INPE-MCTI-GOV-BR | |||
| Afiliação | Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Endereço de e-Mail do Autor | leandro.zanella@gmail.com | |||
| Endereço de e-Mail | leandro.zanella@gmail.com | |||
| Nome do Evento | International Lightning Detection Conference, 22. | |||
| Localização do Evento | Broomfield Tucson | |||
| Data | 2-3 Apr. 2012 | |||
| Editora (Publisher) | Vaisala | |||
| Volume | 1 | |||
| Título do Livro | Proceedings | |||
| Tipo Terciário | Paper | |||
| Histórico (UTC) | 2012-08-17 12:12:21 :: secretaria.cpa@dir.inpe.br -> administrator :: 2012 2018-06-05 00:01:51 :: administrator -> marciana :: 2012 | |||
| 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 | Lightning Physics Atmospheric Electricity High-speed video observations Recoil leaders Lightning Leaders | |||
| Resumo | Thunderstorms are part of the complex and interactive processes that form the climate. Its variability can arise from a number of factors, some internal others external to the climate system. In consequence, our ability to predict future climate changes in the thunderstorm activity depends on a better understanding of the climate system as a whole and the external factors that could be involved such as volcanic eruptions and solar variations, as well as human-induced changes in atmospheric composition. Such an understanding can only be achieved through a greater ability to document and explain observed past variations. The study of thunderstorm changes offered the opportunity to gain a better understanding of atmospheric electricity. Also, the possibility that, as the global warming continues to evolve, increasing evidence of thunderstorm changes are found, will help to understanding the climate system, since thunderstorms as ice factories play a key role in the vertical redistributors of the most important greenhouse substance, the water vapor (Williams and Sátori, 2004). At the present time, no direct or even indirect evidences of global increase in the thunderstorm activity exist in response to the mean global temperature increase, although positive trends are observed in specific areas where larger temperature increases than the global increase are observed (Pinto and Pinto, 2008; Williams, 2009, Pinto, 2009). In the tropics the current trend in global warming is less by a factor of four (0.1 °C per decade) than at higher latitudes (0.4 °C per decade), particularly in the Northern Hemisphere (Trenberth et al., 2007). This aspect tends to minimize any kind of response of global thunderstorm activity to global warming, since most thunderstorms on Earth occur in the tropical region (Pinto, 2009). In this paper the variation of the thunderstorm activity in the city of São Paulo, Southeast Brazil, are further investigated with respect to changes in the surface air temperature in the last 60 years (since 1951) at the 30-year and monthly time scales. While the 30-year period was chosen following the period adopted by the World Meteorological Organization (WMO) to estimate long term climate variations, the monthly variation can be used to predict the future activity with more confidence than the simple annual variation. | |||
| Área | CEA | |||
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > The sensitivity of... | |||
| Conteúdo da Pasta doc | acessar | |||
| Conteúdo da Pasta source | não têm arquivos | |||
| Conteúdo da Pasta agreement |
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| 4. Condições de acesso e uso | ||||
| URL dos dados | http://urlib.net/ibi/J8LNKAN8RW/3CF9LPL | |||
| URL dos dados zipados | http://urlib.net/zip/J8LNKAN8RW/3CF9LPL | |||
| Idioma | en | |||
| Arquivo Alvo | Thunderstorm Sensitivity to Temperature Changes in the City of Sao Paulo.pdf | |||
| Grupo de Usuários | lattes secretaria.cpa@dir.inpe.br | |||
| Visibilidade | shown | |||
| Permissão de Leitura | allow from all | |||
| Permissão de Atualização | não transferida | |||
| 5. Fontes relacionadas | ||||
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F3T29H | |||
| Acervo Hospedeiro | dpi.inpe.br/plutao@80/2008/08.19.15.01 | |||
| 6. Notas | ||||
| Notas | Informações Adicionais: Schonland et al. (Progressive lightning, 6, Proc. Roy. Soc. (London), A168, 455-469, 1938), in their seminal streak camera studies of lightning, have identified four events of a peculiar type of negative stepped leader that they termed β 2 , a rather rare variant of the type β leader and in it the second and slower stage of the leader is associated with the appearance of one or more fast dart streamers, which travel rapidly down from the cloud along the previously formed track and cease when they have caught up with the slower leader-tip . During two different campaigns between 2007 and 2011 in Tucson, Arizona, USA, and in São José dos Campos, São Paulo, Brazil, we recorded seven downward leaders that fit in the type β 2 description given by Schonland et al. (1938). All cases occurred between about 5 and 32 km from a high-speed camera that was operating at 4000 frames per second and three of them could also have their electric field changes measured. All the dart streamers that we observed had speeds between 106 and 107 m s-1, in agreement with previous observations of recoil leaders (RLs). Also, during the development of the three cases whose electric field change data was available it was possible to identify a sequence of microsecond-scale pulses preceding the development of the Considering the similarities in the optical and electric field signatures of both phenomena, we propose that the type β 2 negative leaders are the visible manifestation of the development of RLs that were initiated inside the cloud and propagate below the cloud-base during the development of a bipolar, bidirectional leader that precedes a lightning flash to ground. The RLs are initiated in and propagate through channels that were previously ionized by the in-cloud positive portion of a bidirectional leader, eventually connecting to one of its active branches. When they do an intense return pulse of luminosity that optically appears as the dart streamer reported by. | |||
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi edition editor isbn issn lineage mark mirrorrepository nextedition numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress readergroup resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark type url | |||
| 7. Controle da descrição | ||||
| e-Mail (login) | marciana | |||
| atualizar | ||||