| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | mtc-m16b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | cptec.inpe.br/walmeida/2004/12.22.16.17 |
| Última Atualização | 2004:12.22.02.00.00 (UTC) administrator |
| Repositório de Metadados | cptec.inpe.br/walmeida/2004/12.22.16.17.28 |
| Última Atualização dos Metadados | 2021:02.10.19.04.46 (UTC) administrator |
| Chave Secundária | INPE-11874-PRE/7221 |
| Chave de Citação | SouzaAmbrKaya:2004:RaAtMe |
| Título | The Autumn Rainy Regime over the Eastern Amazon/Northeast Brazil: Rainfall-Producing Atmospheric Mechanisms on Intraseasonal and Submonthly Timescales  |
| Formato | On-line |
| Ano | 2004 |
| Data de Acesso | 08 maio 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 1215 KiB |
| 2. Contextualização | |
| Autor | 1 Souza, Everaldo B. de 2 Ambrizzi, Tercio 3 Kayano, Mary Toshie |
| Identificador de Curriculo | 1 2 3 8JMKD3MGP5W/3C9JHST |
| Grupo | 1 DMD-INPE-MCT-BR |
| Afiliação | 1 CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil |
| Endereço de e-Mail | atus@cptec.inpe.br |
| Nome do Evento | International Clivar Science Conference, 1. |
| Localização do Evento | Baltimore |
| Data | 21-25 jun. |
| Tipo Terciário | Posters |
| Histórico (UTC) | 2005-01-12 18:35:54 :: fabia -> administrator :: 2008-06-10 21:24:11 :: administrator -> estagiario :: 2010-05-11 16:55:38 :: estagiario -> administrator :: 2021-02-10 19:04:46 :: administrator -> marciana :: 2004 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Resumo | The regional precipitation variability within the autumn rainy regime (March to May) over the eastern Amazon (EAM) and northeast Brazil (NEB) is diagnosed by using raingauge-based weekly data from 1982 to 2001. This rainy regime is remarkably modulated by the combined effect of the Pacific and Atlantic SST anomalies. Thus, two extreme and contrasting large-scale climatic scenarios are considered in this study: the unfavorable - UNFAV (favorable - FAV) scenario defined by the simultaneous manifestations of the El Niño (La Niña) in the Pacific and northward (southward) SST gradient in the intertropical Atlantic. UNFAV (FAV) composites for unfiltered data showed remarkable changes in both the Walker and the Hadley cells associated with the Atlantic ITCZ anomalously weakened (enhanced) which in consequence yields deficient (abundant) autumn rainy regime in most of the EAM/NEB. In the context of these scenarios, we have objectively identified the pluviometric variability using empirical orthogonal functions (EOF) analyses performed on the (30-70 day) intraseasonal and (£21 day) submonthly filtered weekly precipitation anomalies for 18 autumn seasons (1983 to 2000). Only the leading EOF mode for these timescales is presented. Strong pluviometric oscillations for both scales during UNFAV and FAV years revealed that, even under extreme climatic conditions prevailing simultaneously in the tropical Pacific and Atlantic, events with anomalously deficient and abundant precipitation over the EAM/NEB occur alternately. Composites based on events with anomalously increased precipitation (selected from principal component series) on intraseasonal and submonthly scales were analyzed separately for the UNFAV and FAV years. It is attempted to isolate and identify the main rainfall-producing atmospheric mechanisms for these scales and regions. These analyses corroborate that during both scenarios UNFAV and FAV the more important rainfall-producing atmospheric mechanism over the EAM/NEB on intraseasonal scale consists in the establishment of deep convective bands organized during sporadic passages of the frontal systems over the northeast Brazil. Such a regional pattern is embedded in large-scale dynamical environment related to the propagation of the MJO convection-active phase over the tropical South America. On the other hand, the main rainfall-producing atmospheric mechanism over the same regions on submonthly scale is the Atlantic ITCZ during FAV years. However,during UNFAV years were observed that the equatorial Atlantic ITCZ activity may be forced by meridionally elongated midlatitude wave trains at upper troposphere. |
| Área | MET |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > The Autumn Rainy... |
| 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://mtc-m16b.sid.inpe.br/ibi/cptec.inpe.br/walmeida/2004/12.22.16.17 |
| URL dos dados zipados | http://mtc-m16b.sid.inpe.br/zip/cptec.inpe.br/walmeida/2004/12.22.16.17 |
| Idioma | en |
| Arquivo Alvo | Souza_Autumn.pdf |
| Grupo de Usuários | administrator fabia |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/43SKC35 |
| Lista de Itens Citando | sid.inpe.br/mtc-m21/2012/07.13.14.56.22 1 |
| Acervo Hospedeiro | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist booktitle callnumber copyright creatorhistory descriptionlevel dissemination documentstage doi edition editor electronicmailaddress identifier isbn issn keywords label lineage mark mirrorrepository nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |