| 1. Identificação | |
| Tipo de Referência | Pôster em Evento (Conference Proceedings) |
| Site | mtc-m16d.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 8JMKD3MGP7W/388QN6B |
| Repositório | sid.inpe.br/mtc-m19/2010/09.13.13.45 |
| Última Atualização | 2010:11.29.12.33.18 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/mtc-m19/2010/09.13.13.45.19 |
| Última Atualização dos Metadados | 2021:01.02.03.58.14 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| Chave de Citação | CastroBona:2010:ImRoSe |
| Título | Impacts of the ross sea anomalous sea ice conditions on the Southern Hemisphere atmosphere  |
| Ano | 2010 |
| Data de Acesso | 25 jun. 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 2291 KiB |
| 2. Contextualização | |
| Autor | 1 Castro, Christopher Alexander Cunningham 2 Bonatti, Paulo |
| Grupo | 1 DMD-CPT-INPE-MCT-BR 2 DMD-CPT-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Endereço de e-Mail do Autor | 1 christopher.cunningham@cptec.inpe.br 2 paulo.bonatti@cptec.inpe.br |
| Nome do Evento | The Meeting of the Americas. |
| Localização do Evento | Foz do Iguaçu |
| Data | 8-12 Aug. 2010 |
| Editora (Publisher) | AGU |
| Título do Livro | Posters |
| Tipo Terciário | Poster Session |
| Histórico (UTC) | 2010-11-29 12:33:18 :: valdirene -> administrator :: 2010 2021-01-02 03:58:14 :: administrator -> simone :: 2010 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Palavras-Chave | sea ice global climate models ocean atmosphere interactions |
| Resumo | This work examines the impact, on the Southern Hemisphere atmosphere, of anomalous sea ice extension in the Ross Sea, from the standpoint of two opposite conditions: with reduced and increased sea ice cover. To achieve this goal we have designed an experiment with the Atmospheric General Circulation Model of the Center for Weather Forecast and Climate Studies (AGCM-CPTEC/INPE). The whole experiment was composed of three large ensembles, sized with 60 members each, in order to achieve a significant recognition of signal. One of them, the control experiment, was forced with climatological sea surface temperatures and sea ice cover. In the other two ensembles the sea ice cover distribution in the Ross Sea was synthesized, from actual observed anomalies, using the least and the most observed sea ice cover in the 1979-2005 time series of measurements. Those experiments were named RO- and RO+, respectively. As expected, the sea ice cover primarily affects the heat fluxes from the ocean. When the sea ice layer is reduced (increased), the fluxes increase (reduce), and this effect is more evident in sensible than latent heat fluxes. The permanence for several weeks of those abnormal conditions is able to alter locally the pattern of low-level temperature. The results show positive (negative) temperature anomalies driven by the abnormal positive (negative) fluxes of heat due to the imposed sea ice perturbation. Thought the vertical penetration of the temperature anomalies is shallow, not exceeding the 700 hPa level, the sea ice cover anomaly imprints a discernible and permanent anomaly in the near-surface temperature field, as can be seen evaluating every member in the perturbed ensembles. A Principal Component Analysis of the hemispherical patterns of low-level temperature (925 hPa) identifies the local impact due to the sea ice cover in the first and second eigenvectors, for the RO- and RO+ respectively. The flux-driven anomalous patterns appeared merged with hemispherical patterns due to the internal variability of the model (CTRL). The difference between the CTRL and perturbed pattern depicts that part of the anomalous pattern not due to the internal variability. Among the most important results are the indications of a relationship between the state of sea ice cover in the Ross Sea and the low-level temperatures in subtropical and extratropical South America. The present results indicate that the relationship is such that the anomalies of temperature in South America are of reverse sign regarding the polarity of the sea ice anomaly in the Ross Sea. |
| Área | MET |
| Arranjo | Impacts of the... |
| 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/8JMKD3MGP7W/388QN6B |
| URL dos dados zipados | http://urlib.net/zip/8JMKD3MGP7W/388QN6B |
| Idioma | en |
| Arquivo Alvo | Christopher_IMPACTS.pdf |
| Grupo de Usuários | administrator valdirene |
| Grupo de Leitores | administrator valdirene |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Repositório Espelho | sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/43SKC35 |
| Lista de Itens Citando | sid.inpe.br/bibdigital/2021/01.01.17.20 2 |
| Acervo Hospedeiro | sid.inpe.br/mtc-m19@80/2009/08.21.17.02 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisheraddress resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | simone |
| atualizar | |