| 1. Identificação | |
| Tipo de Referência | Resumo em Evento (Conference Proceedings) |
| Site | mtc-m12.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZ3r59YD6/GP67p |
| Repositório | sid.inpe.br/iris@1912/2005/07.20.01.43.44 |
| Última Atualização | 2018:09.24.13.59.07 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/07.20.01.44 |
| Última Atualização dos Metadados | 2018:09.24.13.59.07 (UTC) marciana |
| Rótulo | 6767 |
| Chave de Citação | BatistaShimLawrAntu:1993:ElNiEf |
| Título | El Nino effect on Amazon vegetation cover through NOAA-AVHRR  |
| Ano | 1993 |
| Data Secundária | 19950123 |
| Data de Acesso | 13 maio 2024 |
| Tipo Secundário | PRE CI |
| Número de Arquivos | 1 |
| Tamanho | 309 KiB |
| 2. Contextualização | |
| Autor | 1 Batista, Getulio Teixeira 2 Shimabukuro, Yosio Edemir 3 Lawrence, William T. 4 Antunes, Mauro A. H. |
| Grupo | 1 DSR-INPE-MCT-BR |
| Nome do Evento | Simpósio Latino-Americano em Percepcion Remota, 6. |
| Localização do Evento | Cartagena, CO |
| Data | 03-08 oct. 1993 |
| Páginas | 37 |
| Título do Livro | Resumos |
| Organização | SELPER |
| Histórico (UTC) | 2008-06-09 20:11:10 :: administrator -> jefferson :: 2010-07-07 18:50:40 :: jefferson -> administrator :: 2018-06-05 00:52:30 :: administrator -> marciana :: 1993 |
| 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 | AGRONOMIA AMAZONIA LEGAL INDICE DE VEGETACAO EL NINO COBERTURA VEGETAL NOAA AVHRR NDVI |
| Resumo | This paper shows results of an experiment that explored a long-term temporal variation of the vegetation index NDVI (Normalized DifferenceVegetation Index)of several vegetation covers that occur in the Brazilian LegalAmazon. The value of NDVI obtained from NOAA satellites, has veem shown for the estimation of a number of ecosystem variables, such as leaf area index and photosynthetic active absorbed radiation by the canopy, which in turn are essential for modeling of gases, mass, and energy exchange between the biosphere and the atmosphere, contributing therefore, for the understanding fo global change processes. The phenology of natural vegetation under diversi climatic conditions due not only to seasonal variation but also episodic events sych ENSO (El Nino Southern Oscillation)is important for the understanting of these processes. Long-term monitoring (August 1981 to June 1991)of 8 vegetation types (Dense Forest "Submontana" and "Terras Baixas"), open Forest ("Submontana"and "Terras Baixas"), transition Forest, Seasonal Forest ("Caatinga"), and tow types of "Cerrado" which occur in the northern part of Brazil (3 N-19S and 35W and 74W)is discussed. For each vegetation type, 10 samples of 3x3 pixels were selected and monthly composites of NDVI were obtained from GAC ("Global Area Coverage")data. Yearly composites of NDVI were obtained ro verify the inter-annual climatic variation due to ElNino occurence. Throughout the analysis of 10 years of data is was clearly noteced the variation on the NDVI due to differene satellites, indicating the need for calibration of AVHRR data for multitemporal studies. Therefore, a calibration procedure proposed by NASA Goddard Space Flight Center and the University of Maryland (Los, 1993)were applied to the data to make possible quantitative comparisons of NDVI values obtained at different times. Seasonality of "Cerrado" and especially of "Caatinga" , is outstanding NDVI values vary from 3 to 4 times for the "Cerrado" and "Caatinga" respectively, in extreme years. Preserved "Cerrado"("parque")was always distinct from Dense Forest ("Terra Firme")in any season ofany year analyzed, however, better distinction is found during the dry season, especially in September. A comparison between normal an El Nino years indicated the influence of this phenomenon on the phenology of the forest vegetation. The phenology of forest cover, except "Caatinga" and "Cerrado" does not vary much throughout the year, however, for El Nino years, as 1983, there is a clear reduction in the NDVI values during the dry season, especially for the Transition ForestThis indicates the importance of multitemporal data for the characterization of forest ecosystems. Dense vegetation covers showed high NDVI values (-0,5), "Caatinga"had an average NDVI value -0,3 with large seasonal variation, and "Cerrado"had average NDVI value -0,3 with great seasonal variation but never reaching the"Caatinga" greeness peak (NDVI-0,5). |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > El Nino effect... |
| 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/6qtX3pFwXQZ3r59YD6/GP67p |
| URL dos dados zipados | http://urlib.net/zip/6qtX3pFwXQZ3r59YD6/GP67p |
| Arquivo Alvo | Batista_el nino.pdf |
| Grupo de Usuários | administrator |
| Visibilidade | shown |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Divulgação | <E> |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | affiliation archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel doi e-mailaddress edition editor electronicmailaddress format isbn issn language lineage mark mirrorrepository nextedition notes numberofvolumes orcid parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup readpermission resumeid rightsholder schedulinginformation secondarykey secondarymark serieseditor session shorttitle sponsor subject tertiarymark tertiarytype type url volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |