| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m12.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZ3ukuKE/Cmi37 |
| Repositório | sid.inpe.br/sergio/2004/06.03.15.15 (acesso restrito) |
| Última Atualização | 2017:07.21.15.47.43 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/sergio/2004/06.03.15.15.23 |
| Última Atualização dos Metadados | 2018:06.05.00.40.50 (UTC) administrator |
| Chave Secundária | INPE-10800-PRE/6256 |
| DOI | 10.1080/01431160310001598908 |
| ISBN/ISSN | 0143-1161 |
| ISSN | 0143-1161 |
| Chave de Citação | GalvãoPonEpiRudFor:2004:SuViAn |
| Título | Sun and view angle effects on NDVI determination of land cover types in the Brazilian Amazon region with hyperspectral data  |
| Ano | 2004 |
| Mês | May |
| Data de Acesso | 13 maio 2024 |
| Tipo de Trabalho | journal article |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 2610 KiB |
| 2. Contextualização | |
| Autor | 1 Galvão, Lênio Soares 2 Ponzoni, Flávio Jorge 3 Epiphanio, José Carlos Neves 4 Rudorff, Bernardo Friedrich Theodor 5 Formaggio, Antonio Roberto |
| Grupo | 1 DSR-INPE-MCT-BR 2 DSR-INPE-MCT-BR 3 DSR-INPE-MCT-BR 4 DSR-INPE-MCT-BR 5 DSR-INPE-MCT-BR |
| Revista | International Journal of Remote Sensing |
| Volume | 25 |
| Número | 10 |
| Páginas | 1861-1879 |
| Histórico (UTC) | 2006-03-27 13:14:50 :: sergio -> administrator :: 2006-05-09 14:48:37 :: administrator -> marciana :: 2006-05-17 13:32:16 :: marciana -> administrator :: 2006-09-03 21:44:13 :: administrator -> marciana :: 2008-04-24 14:26:33 :: marciana -> administrator :: 2008-06-09 19:22:41 :: administrator -> banon :: 2008-11-05 15:16:29 :: banon -> marciana :: 2011-11-01 19:10:20 :: marciana -> administrator :: 2004 2016-06-04 23:30:04 :: administrator -> marciana :: 2004 2017-07-21 15:47:43 :: marciana -> administrator :: 2004 2018-06-05 00:40:50 :: 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 |
| Tipo de Versão | publisher |
| Palavras-Chave | Amazônia (Região) reflectância bidirecional índice de vegetação indice de vegetação da diferença normalizada radiômetro avançado de resolução muito alta photosynthetically active radiation bidirectional reflectance model spectral vegetation indexes normalized difference vegetation index (NDVI) Advanced Very High Resolution Radiometer (AVHRR) leaf area surface imagery forest deforestation |
| Resumo | Solar zenith and view angle effects on the normalized difference vegetation index (NDVI) of land cover types in the Brazilian Amazon region were analysed. Airborne Hyperspectral Mapper(HYMAP) data were collected in 126 narrow bands (450-2500 nm) with a field of view (FOV) of ±30° from nadir. Data collection was performed initially in two flight lines with solar zenith angles of 29° and 53°. In a third flight line, view angles were up to +60° from nadir by airplane banking. Surface reflectance spectra representative of major land cover types were selected, and principal component analysis was applied to indicate their spectral similarity relationships in response to solar zenith angle variations. Reflectance and NDVI differences between pairs of land cover types were plotted for a variable band positioning. Atmospheric and coupled directional effects were analysed for variations in apparent and surface reflectance values, in the depth of the major water vapour absorption bands, and in the NDVI values, as a function of view angle. The results showed that major Amazon land cover types had increased NDVI values with increase in solar zenith angle, especially exposed soil or other vegetated surface components under soil background influence. Small solar zenith angles improved the NDVI contrast between green vegetation and soil and also the land cover discrimination in all bands, except for those placed in the 750-1100 nm range. At large solar zenith angles, this spectral interval was useful to separate primary forest/old woody vegetation regrowth from most of the other surface components due to enhancement in the shade fraction associated with the arboreal covers. Small differences in NDVI values of tropical rainforest were observed between ±25° from nadir. These differences became stronger with the increase in view angle from +25° to +60° in response to the additive and subtractive contributions of atmospheric scattering and absorption, respectively, and of coupled directional effects. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Sun and view... |
| 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 | |
| Idioma | en |
| Grupo de Usuários | Malu administrator banon marciana administrator |
| Grupo de Leitores | administrator marciana |
| Visibilidade | shown |
| Detentor da Cópia | SID/SCD |
| Política de Arquivamento | denypublisher denyfinaldraft12 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Divulgação | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | affiliation alternatejournal archivist callnumber copyright creatorhistory descriptionlevel e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject targetfile tertiarymark tertiarytype url |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |