| 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/3887R78 |
| Repositório | sid.inpe.br/mtc-m19/2010/09.09.17.25 |
| Última Atualização | 2010:11.09.12.47.41 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/mtc-m19/2010/09.09.17.25.56 |
| Última Atualização dos Metadados | 2021:01.02.03.58.09 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| Chave de Citação | BottinoNobr:2010:ClAnLo |
| Título | Cluster analysis of low level thermodynamics profiles to characterise cloud regimes on tropics and subtropics oceans  |
| Ano | 2010 |
| Data de Acesso | 29 abr. 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 446 KiB |
| 2. Contextualização | |
| Autor | 1 Bottino, Marcus Jorge 2 Nobre, Paulo |
| Identificador de Curriculo | 1 2 8JMKD3MGP5W/3C9JJ3B |
| 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 marcus.bottino@cptec.inpe.br 2 pnobre@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) | 2010-11-09 12:47:41 :: valdirene -> administrator :: 2010 2021-01-02 03:58:09 :: 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 | marine meteorology |
| Resumo | Global climate models typically do not correctly simulate cloudness under condition of synoptic subsidence. In the context of tropical and subtropical ocean-atmosphere interaction, boundary-layer clouds constitutes a important contributor to radiative forcing and climate cloud feedbacks. Identifying clouds regimes and their role in climate system can serve a multitude of purpose, such as a understanding of clouds and to improving the representation of clouds in general circulation models. In this study we report on first results of a technique that aims to identify low level clouds regimes based on clustering thermodynamics profiles from National Centers for Environmental Prediction (NCEP) operational analysis. In order to describe the thermodynamics structure associated to boundary-layer clouds was used the commonly variables relative humidity and atmosphere stability, widely used in diagnostic cloud cover methods. We uses a iterative clustering algorithm (dynamic cluster) to objectively classify low troposphere thermodynamics profiles variables. The process result on a representative number of centroids that describe average profiles classes. Applying these methodology on one July day was found ~20 classes for both 00 and 12 UTC. The classified fields was comparing with satellite cloud cover data from International Satellite Cloud Climatology Project (ISCCP) and indicate that about six-seven classes present a predominant cloud top pressure frequency under 680 hPa level. The geographic location of this low level classes show that almost occur over the ocean and a progressive shaded class corresponding to clouds transition from stratocumulus over the subtropical eastern oceans to trade cumulus in tropical regions. These low level classes present a prominent maximum inversion strength (<-0.1 K/hPa) that topped a layer with relative humidity greater than 75%. Beneath these layers the relative humidity profiles present a little decrease, indicating a mixed layer, and above these a substantial drought reach a maximum of 40%. The preliminary results indicate a coherence on clustering thermodynamics profiles and boundary-layer cloud regimes, suggesting their application to provide a improvement on models cloud parameterization. |
| Área | MET |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDMD > Cluster analysis of... |
| 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/3887R78 |
| URL dos dados zipados | http://urlib.net/zip/8JMKD3MGP7W/3887R78 |
| Idioma | en |
| Arquivo Alvo | Bottino_PosterAGU2010_pnobre.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/mtc-m21/2012/07.13.14.57.54 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 rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject tertiarymark type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | simone |
| atualizar | |