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1. Identificação
Tipo de ReferênciaArtigo em Evento (Conference Proceedings)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3QG5AU2
Repositóriosid.inpe.br/mtc-m21b/2018/02.05.13.30
Repositório de Metadadossid.inpe.br/mtc-m21b/2018/02.05.13.30.55
Última Atualização dos Metadados2019:01.14.17.05.23 (UTC) administrator
Chave SecundáriaINPE--PRE/
Chave de CitaçãoEidtCava:2018:RaVaOv
TítuloRainfall variability over South America associated with SST anomalies in South Pacific and South Atlantic oceans
Ano2018
Data de Acesso11 maio 2024
Tipo SecundárioPRE CI
2. Contextualização
Autor1 Eidt, Renata Tatsch
2 Cavalcanti, Iracema Fonseca de Albuquerque
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JHDE
Grupo1 MET-MET-SESPG-INPE-MCTIC-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 renata.eidt@gmail.com
Nome do EventoInternational Conference for Southern Hemisphere Meteorology and Oceanography, 12 (AMOS-ICSHMO)
Localização do EventoSydney, Australias
Data05-09 feb.
Tipo TerciárioPoster
Histórico (UTC)2018-02-05 13:30:55 :: simone -> administrator ::
2019-01-14 17:05:23 :: administrator -> simone :: 2018
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
ResumoSea surface temperature (SST) anomalies influence atmospheric circulation and contribute to changes in weather and climate around the globe. It is already known that precipitation over continental areas can be associated with SST variability in the tropics. However, the importance of extratropical oceans is still not completely understood. The aim of this study is to investigate the influence of extratropical SST anomalies to rainfall variability, focusing on South America, and the oceanic and atmospheric processes involved. The period from 1981 to 2010 was studied in a monthly scale, using SST and precipitation data obtained from NOAA datasets (ERSST-v5 and GPCP, respectively), and atmospheric data from CFSR reanalysis. Singular Value Decomposition (SVD) showed connectivity between SST variations in extratropical oceans and rainfall variability over southeastern South America, an important agricultural area. Extreme wet and dry events over this region were identified using the Standardized Precipitation Index (SPI), to a further evaluation of the oceanic conditions associated with these episodes. Empirical Orthogonal Functions (EOF) and SVD were applied for the identification of principal modes of variability. Dipoles of SST were identified in South Pacific and South Atlantic oceans. Two areas of opposite signs were observed in western (~25°S) and southern (~55°S) South Pacific Ocean, regions of atmospheric blocking and the South Pacific Convergence Zone (SPCZ). Positive SST anomalies in the southern area are related to precipitation increase over southeastern South America. The southern oceanic area is also associated with a dipole of precipitation over Southeast Asia and central Pacific Ocean. A dipole signal was also noticed in western South Atlantic Ocean, mainly from September to December, varying in position and intensity near South America. The results obtained showed that extratropical oceans have an important role for precipitation variability in remote regions, and the oceanic areas identified can contribute to climate monitoring.
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4. Condições de acesso e uso
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Visibilidadeshown
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Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3F35TRS
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosarchivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark type url versiontype volume
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