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A expressão de busca foi <related:sid.inpe.br/plutao/2015/06.01.12.55.34-0:en:title:2:vegetation effects amazon anomalies:sun sensor geometry effects vegetation index anomalies amazon rainforest:>.
8 referências similares encontradas (inclusive a original) buscando em 17 dentre 17 Arquivos.
Data e hora local de busca: 18/04/2024 10:22.
1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Siteplutao.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W/3JJPDUE
Repositóriosid.inpe.br/plutao/2015/06.01.12.55.33   (acesso restrito)
Última Atualização2015:07.06.16.25.01 (UTC) administrator
Repositório de Metadadossid.inpe.br/plutao/2015/06.01.12.55.34
Última Atualização dos Metadados2018:06.04.23.25.37 (UTC) administrator
DOI10.1080/15481603.2015.1038428
ISSN1548-1603
Rótulolattes: 5507769922001047 2 MaedaGalv:2015:SuGeEf
Chave de CitaçãoMaedaGalv:2015:SuGeEf
TítuloSun-sensor geometry effects on vegetation index anomalies in the Amazon rainforest
Ano2015
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho540 KiB
2. Contextualização
Autor1 Maeda, Eduardo Eiji
2 Galvão, Lênio Soares
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JHLF
Grupo1
2 DSR-OBT-INPE-MCTI-GOV-BR
Afiliação1 University of Helsink
2 Instituto Nacional de Pesquisas Espaciais (INPE)
RevistaGIScience and Remote Sensing
Volume52
Número3
Páginas332-343
Nota SecundáriaB1_GEOCIÊNCIAS B1_CIÊNCIAS_AGRÁRIAS_I B2_INTERDISCIPLINAR B3_CIÊNCIAS_AMBIENTAIS
Histórico (UTC)2015-06-01 12:55:34 :: lattes -> administrator ::
2018-06-04 23:25:37 :: administrator -> simone :: 2015
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-Chavebidirectional effects
MODIS
view-illumination effects
viewing-illumination geometry
Vegetation Indices
Amazon
ResumoThe capacity of orbital sensors to monitor vegetation functioning and phenology in the Amazon rainforest using vegetation indices (VIs) has been broadly challenged in recent years. In particular, recent studies indicate that artifacts associated with sun-sensor geometry are likely to have major influence on the variability of some VIs. Nevertheless, the magnitude of this influence and the impacts on different VIs are still poorly understood. This study evaluates the scaling and magnitude of the phase angle variation effects on six different VIs, as well as in the individual spectral bands used for computing these indices. Our results show a significant and consistent relationship between phase angle and VI anomalies. The scaling (i.e. the change rate of VI anomaly with phase angle) of this relationship varies according to spectral bands and VIs. Median anomalies in individual Moderate Resolution Imaging Spectroradiometer (MODIS) bands showed a variation of up to −0.045 degree−1 , while median VI anomaly variations reached −0.047 degree−1 . The scaling of all relationships was shown to be constant throughout the year. Average phase angle values in the Amazon basin ranged from approximately 25 degrees in October to 41 degrees in June. Such variation can, on average, cause changes of up to 0.75 in some VIs, therefore having major impacts on the interpretation of the relationships between VIs and forest phenology.
ÁreaSRE
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Grupo de Usuárioslattes
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Grupo de Leitoresadministrator
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Política de Arquivamentodenypublisher denyfinaldraft
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Repositório Espelhourlib.net/www/2011/03.29.20.55
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
DivulgaçãoWEBSCI; SCOPUS.
Acervo Hospedeirodpi.inpe.br/plutao@80/2008/08.19.15.01
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress electronicmailaddress format isbn lineage mark month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject targetfile tertiarymark tertiarytype url
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/43BQPF2
Repositóriosid.inpe.br/mtc-m21c/2020/10.02.16.39
Repositório de Metadadossid.inpe.br/mtc-m21c/2020/10.02.16.39.44
Última Atualização dos Metadados2022:01.04.01.35.27 (UTC) administrator
DOI10.1175/JAS-D-20-0063.1
ISSN0022-4928
Chave de CitaçãoChameckiFDCDMSTA:2020:EfVeTo
TítuloEffects of vegetation and topography on the boundary layer structure above the amazon forest
Ano2020
MêsAug.
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
2. Contextualização
Autor1 Chamecki, M.
2 Freire, L. S.
3 Dias, N. L.
4 Chen, B.
5 Dias Junior, C. Q.
6 Machado, Luiz Augusto Toledo
7 Sörgel, M.
8 Tsokankunku, A.
9 De Araújo, A. C.
Identificador de Curriculo1
2
3
4
5
6 8JMKD3MGP5W/3C9JHMS
Grupo1
2
3
4
5
6 DIDSA-CGCPT-INPE-MCTIC-GOV-BR
Afiliação1 University of California
2 Universidade de São Paulo (USP)
3 Universidade Federal do Paraná (UFPR)
4 University of California
5 Instituto Federal do Paraná (IFPR)
6 Instituto Nacional de Pesquisas Espaciais (INPE)
7 Max Planck Institute for Chemistry
8 Max Planck Institute for Chemistry
9 Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Endereço de e-Mail do Autor1
2
3
4
5
6 luiz.machado@inpe.br
RevistaJournal of the Atmospheric Sciences
Volume77
Número8
Páginas2941-2957
Nota SecundáriaA1_GEOCIÊNCIAS A2_INTERDISCIPLINAR B1_ASTRONOMIA_/_FÍSICA
Histórico (UTC)2020-10-02 16:39:44 :: simone -> administrator ::
2020-10-02 16:39:45 :: administrator -> simone :: 2020
2020-10-02 16:41:11 :: simone -> administrator :: 2020
2022-01-04 01:35:27 :: administrator -> simone :: 2020
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
ResumoObservational data from two field campaigns in the Amazon forest were used to study the vertical structure of turbulence above the forest. The analysis was performed using the reduced turbulent kinetic energy (TKE) budget and its associated two-dimensional phase space. Results revealed the existence of two regions within the roughness sublayer in which the TKE budget cannot be explained by the canonical flat-terrain TKE budgets in the canopy roughness sublayer or in the lower portion of the convective ABL. Data analysis also suggested that deviations from horizontal homogeneity have a large contribution to the TKE budget. Results from LES of a model canopy over idealized topography presented similar features, leading to the conclusion that flow distortions caused by topography are responsible for the observed features in the TKE budget. These results support the conclusion that the boundary layer above the Amazon forest is strongly impacted by the gentle topography underneath.
ÁreaMET
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4. Condições de acesso e uso
Idiomaen
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Política de Arquivamentodenypublisher6 allowfinaldraft
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/43SRC6S
DivulgaçãoWEBSCI
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes numberoffiles orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle size sponsor subject targetfile tertiarymark tertiarytype url versiontype
7. Controle da descrição
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21d.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34T/4AGTTJ2
Repositóriosid.inpe.br/mtc-m21d/2024/01.09.16.39   (acesso restrito)
Última Atualização2024:01.09.16.39.20 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21d/2024/01.09.16.39.20
Última Atualização dos Metadados2024:01.15.20.38.57 (UTC) administrator
DOI10.1080/15481603.2023.2290354
ISSN1548-1603
Chave de CitaçãoGalvãoPetrDala:2024:AnOvAm
TítuloCoupled effects of solar illumination and phenology on vegetation index determination: an analysis over the Amazonian forests using the SuperDove satellite constellation
Ano2024
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho30536 KiB
2. Contextualização
Autor1 Galvão, Lênio Soares
2 Petri, Caio Arlanche
3 Dalagnol, Ricardo
Identificador de Curriculo1 8JMKD3MGP5W/3C9JHLF
ORCID1 0000-0002-8313-0497
2 0000-0001-5221-9715
3 0000-0002-7151-8697
Grupo1 DIOTG-CGCT-INPE-MCTI-GOV-BR
2 SER-SRE-DIPGR-INPE-MCTI-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 California Institute of Technology
Endereço de e-Mail do Autor1 lenio.galvao@inpe.br
2 caio.petri@inpe.br
RevistaGIScience and Remote Sensing
Volume61
Número1
Páginase2290354
Nota SecundáriaB1_GEOCIÊNCIAS B1_CIÊNCIAS_AGRÁRIAS_I B2_INTERDISCIPLINAR B3_CIÊNCIAS_AMBIENTAIS
Histórico (UTC)2024-01-09 16:39:20 :: simone -> administrator ::
2024-01-09 16:39:22 :: administrator -> simone :: 2024
2024-01-09 16:39:36 :: simone -> administrator :: 2024
2024-01-15 20:38:57 :: administrator -> simone :: 2024
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-ChaveSatellite constellation
SuperDove
vegetation indices
solar illumination
vegetation phenology
Amazon
ResumoDespite the importance of the Amazonian rainforests in the global carbon cycle, their phenological responses measured by large field-of-view satellite sensors are still not completely understood. In this scenario, close-to-nadir observations at high spatial and temporal resolutions made by satellite constellations may contribute to improve this knowledge. Here, we investigated the sensitivity of five vegetation indices (VIs) to canopy shadows over 15 protected forests of the Amazon, and the possible existence of coupled effects of solar illumination and vegetation phenology on the VI determination. The VIs are the Enhanced Vegetation Index (EVI), Green-Red Normalized Difference (GRND), Modified Photochemical Reflectance Index (MPRI), Normalized Difference Vegetation Index (NDVI), and RedEdge Normalized Difference (REND). They were calculated from 432 images obtained in 2022 by the Planet's eight-band SuperDove instrument. Few daily images acquired on the same day with distinct Solar Zenith Angle (SZA) were used to disentangle the effects of solar illumination from those of vegetation phenology. The results showed the presence of coupled effects of solar illumination and vegetation phenology on the EVI determination regardless of the site location, especially over dense forests. Such effects were not observed significantly in the GRND, MPRI, NDVI, and REND data. When the vegetation phenology was kept fixed in the analysis, solar illumination generated pseudo-greening effects from the EVI, even for small differences in SZA between daily observations. As the most sensitive VI to illumination conditions, the EVI increased from the beginning to the end of the dry season tracking solar angles and shade fractions. This dry-season trend was not observed for GRND, MPRI, NDVI, and REND, which presented low correlations with SZA and shade fractions. These four VIs were correlated with each other over most sites, which explained the agreement observed between their seasonal profiles. From the analysis of 15 sites distributed throughout the Amazon, our findings did not confirm patterns of large-scale greening at the end of the dry season. Local changes in greening (vegetation productivity) and browning were captured by the VIs over a few sites but in different periods of the dry season (June to September). At the high spatial scale of SuperDove observations, our results highlight the necessity of correcting solar and, in some cases, terrain illumination effects on the EVI before retrieving phenological metrics over the Amazon.
ÁreaSRE
Arranjo 1urlib.net > SER > Coupled effects of...
Arranjo 2urlib.net > CGCT > Coupled effects of...
Conteúdo da Pasta docacessar
Conteúdo da Pasta sourcenão têm arquivos
Conteúdo da Pasta agreement
agreement.html 09/01/2024 13:39 1.0 KiB 
4. Condições de acesso e uso
Idiomaen
Arquivo AlvoCoupled effects of solar illumination and phenology on vegetation index determination  an analysis over the Amazonian forests using the SuperDove sate.pdf
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhourlib.net/www/2021/06.04.03.40.25
Unidades Imediatamente Superiores8JMKD3MGPCW/3F3NU5S
8JMKD3MGPCW/46KUATE
Lista de Itens Citandosid.inpe.br/bibdigital/2013/10.18.22.34 7
sid.inpe.br/mtc-m21/2012/07.13.14.53.28 2
DivulgaçãoWEBSCI
Acervo Hospedeirourlib.net/www/2021/06.04.03.40
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark month nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
7. Controle da descrição
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21d.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34T/4AG248E
Repositóriosid.inpe.br/mtc-m21d/2024/01.03.19.14   (acesso restrito)
Última Atualização2024:01.03.19.14.24 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21d/2024/01.03.19.14.24
Última Atualização dos Metadados2024:01.15.20.38.52 (UTC) administrator
DOI10.1080/15481603.2023.2290354
ISSN1548-1603
Chave de CitaçãoGalvãoPetrDala:2023:AnOvAm
TítuloCoupled effects of solar illumination and phenology on vegetation index determination: an analysis over the Amazonian forests using the SuperDove satellite constellation
Ano2023
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho30536 KiB
2. Contextualização
Autor1 Galvão, Lênio Soares
2 Petri, Caio Arlanche
3 Dalagnol, Ricardo
Identificador de Curriculo1 8JMKD3MGP5W/3C9JHLF
ORCID1 0000-0002-8313-0497
2 0000-0001-5221-9715
3 0000-0002-7151-8697
Grupo1 DIOTG-CGCT-INPE-MCTI-GOV-BR
2 SER-SRE-DIPGR-INPE-MCTI-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 California Institute of Technology
Endereço de e-Mail do Autor1 lenio.galvao@inpe.br
2 caio.petri@inpe.br
RevistaGIScience and Remote Sensing
Volume61
Número1
Páginase2290354
Nota SecundáriaB1_GEOCIÊNCIAS B1_CIÊNCIAS_AGRÁRIAS_I B2_INTERDISCIPLINAR B3_CIÊNCIAS_AMBIENTAIS
Histórico (UTC)2024-01-03 19:14:24 :: simone -> administrator ::
2024-01-03 19:14:26 :: administrator -> simone :: 2023
2024-01-03 19:14:41 :: simone -> administrator :: 2023
2024-01-15 20:38:52 :: administrator -> simone :: 2023
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-ChaveAmazon
Satellite constellation
solar illumination
SuperDove
vegetation indices
vegetation phenology
ResumoDespite the importance of the Amazonian rainforests in the global carbon cycle, their phenological responses measured by large field-of-view satellite sensors are still not completely understood. In this scenario, close-to-nadir observations at high spatial and temporal resolutions made by satellite constellations may contribute to improve this knowledge. Here, we investigated the sensitivity of five vegetation indices (VIs) to canopy shadows over 15 protected forests of the Amazon, and the possible existence of coupled effects of solar illumination and vegetation phenology on the VI determination. The VIs are the Enhanced Vegetation Index (EVI), Green-Red Normalized Difference (GRND), Modified Photochemical Reflectance Index (MPRI), Normalized Difference Vegetation Index (NDVI), and RedEdge Normalized Difference (REND). They were calculated from 432 images obtained in 2022 by the Planets eight-band SuperDove instrument. Few daily images acquired on the same day with distinct Solar Zenith Angle (SZA) were used to disentangle the effects of solar illumination from those of vegetation phenology. The results showed the presence of coupled effects of solar illumination and vegetation phenology on the EVI determination regardless of the site location, especially over dense forests. Such effects were not observed significantly in the GRND, MPRI, NDVI, and REND data. When the vegetation phenology was kept fixed in the analysis, solar illumination generated pseudo-greening effects from the EVI, even for small differences in SZA between daily observations. As the most sensitive VI to illumination conditions, the EVI increased from the beginning to the end of the dry season tracking solar angles and shade fractions. This dry-season trend was not observed for GRND, MPRI, NDVI, and REND, which presented low correlations with SZA and shade fractions. These four VIs were correlated with each other over most sites, which explained the agreement observed between their seasonal profiles. From the analysis of 15 sites distributed throughout the Amazon, our findings did not confirm patterns of large-scale greening at the end of the dry season. Local changes in greening (vegetation productivity) and browning were captured by the VIs over a few sites but in different periods of the dry season (June to September). At the high spatial scale of SuperDove observations, our results highlight the necessity of correcting solar and, in some cases, terrain illumination effects on the EVI before retrieving phenological metrics over the Amazon.
ÁreaSRE
Arranjo 1urlib.net > BDMCI > SER > Coupled effects of...
Arranjo 2urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > Coupled effects of...
Conteúdo da Pasta docacessar
Conteúdo da Pasta sourcenão têm arquivos
Conteúdo da Pasta agreement
agreement.html 03/01/2024 16:14 1.0 KiB 
4. Condições de acesso e uso
Idiomaen
Arquivo AlvoCoupled effects of solar illumination and phenology on vegetation index determination  an analysis over the Amazonian forests using the SuperDove sate (1).pdf
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhourlib.net/www/2021/06.04.03.40.25
Unidades Imediatamente Superiores8JMKD3MGPCW/3F3NU5S
8JMKD3MGPCW/46KUATE
Lista de Itens Citandosid.inpe.br/bibdigital/2022/04.03.22.23 1
sid.inpe.br/mtc-m21/2012/07.13.14.53.28 1
sid.inpe.br/bibdigital/2013/10.18.22.34 1
DivulgaçãoWEBSCI
Acervo Hospedeirourlib.net/www/2021/06.04.03.40
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark month nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
7. Controle da descrição
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1. Identificação
Tipo de ReferênciaResumo em Evento (Conference Proceedings)
Sitemtc-m12.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador6qtX3pFwXQZ3r59YD6/GP67p
Repositóriosid.inpe.br/iris@1912/2005/07.20.01.43.44
Última Atualização2018:09.24.13.59.07 (UTC) marciana
Repositório de Metadadossid.inpe.br/iris@1912/2005/07.20.01.44
Última Atualização dos Metadados2018:09.24.13.59.07 (UTC) marciana
Rótulo6767
Chave de CitaçãoBatistaShimLawrAntu:1993:ElNiEf
TítuloEl Nino effect on Amazon vegetation cover through NOAA-AVHRR
Ano1993
Data Secundária19950123
Data de Acesso18 abr. 2024
Tipo SecundárioPRE CI
Número de Arquivos1
Tamanho309 KiB
2. Contextualização
Autor1 Batista, Getulio Teixeira
2 Shimabukuro, Yosio Edemir
3 Lawrence, William T.
4 Antunes, Mauro A. H.
Grupo1 DSR-INPE-MCT-BR
Nome do EventoSimpósio Latino-Americano em Percepcion Remota, 6.
Localização do EventoCartagena, CO
Data03-08 oct. 1993
Páginas37
Título do LivroResumos
OrganizaçãoSELPER
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 Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-ChaveAGRONOMIA
AMAZONIA LEGAL
INDICE DE VEGETACAO
EL NINO
COBERTURA VEGETAL
NOAA
AVHRR
NDVI
ResumoThis 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).
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URL dos dados zipadoshttp://urlib.net/zip/6qtX3pFwXQZ3r59YD6/GP67p
Arquivo AlvoBatista_el nino.pdf
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6. Notas
Campos Vaziosaffiliation 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
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Siteplutao.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
IdentificadorJ8LNKAN8RW/3E7UQSL
Repositóriodpi.inpe.br/plutao/2013/05.31.19.24   (acesso restrito)
Última Atualização2013:07.12.14.28.31 (UTC) administrator
Repositório de Metadadosdpi.inpe.br/plutao/2013/05.31.19.24.03
Última Atualização dos Metadados2018:06.04.23.39.08 (UTC) administrator
DOI10.1016/j.jag.2012.07.005
ISSN0303-2434
Rótulolattes: 1646956319628219 3 GalvãoBreuSantMour:2013:ViEfHy
Chave de CitaçãoGalvaoBreuSantMour:2013:ViEfHy
TítuloView-illumination effects on hyperspectral vegetation indices in the Amazonian tropical forest
ProjetoFAPESP (08/11499-8)
Ano2013
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho1755 KiB
2. Contextualização
Autor1 Galvao, Lenio Soares
2 Breunig, Fábio Marcelo
3 Santos, Joao Roberto
4 Moura, Yhasmin Mendes de
Identificador de Curriculo1 8JMKD3MGP5W/3C9JHLF
Grupo1 DSR-OBT-INPE-MCTI-GOV-BR
2
3 DSR-OBT-INPE-MCTI-GOV-BR
4 SER-SRE-SPG-INPE-MCTI-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Universidade Federal de Santa Maria (UFSM)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 lenio@dsr.inpe.br
2
3 jroberto@ltid.inpe.br
4 yhasmin@dsr.inpe.br
Endereço de e-Mailjroberto@ltid.inpe.br
RevistaInternational Journal of Applied Earth Observation and Geoinformation
Volume21
Páginas291-300
Histórico (UTC)2013-05-31 20:42:51 :: lattes -> administrator :: 2013
2018-06-04 23:39:08 :: administrator -> marcelo.pazos@inpe.br :: 2013
3. Conteúdo e estrutura
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Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-Chavehyperspectral remote sensing
hyperion
vegetation indices
PROSAIL
tropical forest
view angle
directional effects
dry season
ResumoBecause of the pointing capability of the Hyperion/Earth Observing-One (EO-1) to improve the revisit time of the scene, temporal series of narrowband vegetation indices (VIs) can be generated to study the phenology of the Amazonian tropical forests. In this study, 10 selected narrowband VIs calculated from Hyperion nadir and off-nadir data and from different view directions (forward scattering and backscattering) were analyzed for their sensitivity to view-illumination effects along the dry season on the Seasonal Semi-deciduous Forest. Data analysis was also supported by PROSAIL modeling to simulate the spectral response of this forest type in both directions. Hyperion and PROSAIL results showed that the Enhanced Vegetation Index (EVI) and Photochemical Reflectance Index (PRI) were the two more anisotropic VIs, whereas the Normalized Difference Vegetation Index (NDVI), Structure Insensitive Pigment Index (SIPI) and the Vogelmann Red Edge Index (VOG) were comparatively less sensitive to view-illumination effects. When compared to the other VIs and because of the greater dependence on the near-infrared (NIR) reflectance, EVI showed a different spectral behavior. EVI increased from forward scattering to backscattering and with decreasing solar zenith angle (SZA) towards the end of the local dry season, due to reduction in shading and enhancement of the illumination effects. On the other hand, PRI was higher with increasing shading in the forward scattering direction, as deduced from the PROSAIL simulation. Results emphasized the importance of taking into account bidirectional effects when analyzing temporal series of VIs collected over tropical forests by imaging spectrometers with pointing capability or even by multispectral sensors with large field-of-view (FOV).
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Arquivo Alvo1-s2.0-S0303243412001432-main-1.pdf
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marciana
self-uploading-INPE-MCTI-GOV-BR
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5. Fontes relacionadas
Repositório Espelhoiconet.com.br/banon/2006/11.26.21.31
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
8JMKD3MGPCW/3F3NU5S
DivulgaçãoWEBSCI; PORTALCAPES; MGA; SCOPUS.
Acervo Hospedeirodpi.inpe.br/plutao@80/2008/08.19.15.01
6. Notas
NotasSetores de Atividade: Outras atividades profissionais, científicas e técnicas.
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark month nextedition number orcid parameterlist parentrepositories previousedition previouslowerunit progress rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url
7. Controle da descrição
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/3TTJJEH
Repositóriosid.inpe.br/mtc-m21c/2019/08.28.11.22
Última Atualização2019:08.28.11.22.28 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21c/2019/08.28.11.22.28
Última Atualização dos Metadados2020:01.06.11.42.18 (UTC) administrator
DOI10.3390/rs11141650
ISSN2072-4292
Chave de CitaçãoPetriGalv:2019:SeSeMO
TítuloSensitivity of seven MODIS vegetation indices to BRDF effects during the amazonian dry season
Ano2019
MêsJuly
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho6764 KiB
2. Contextualização
Autor1 Petri, Caio Arlanche
2 Galvão, Lênio Soares
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JHLF
ORCID1 0000-0001-5221-9715
2 0000-0002-8313-0497
Grupo1 SER-SRE-SESPG-INPE-MCTIC-GOV-BR
2 DIDSR-CGOBT-INPE-MCTIC-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 caio.petri@inpe.br
2 lenio.galvao@inpe.br
RevistaRemote Sensing
Volume11
Número14
Páginase1650
Nota SecundáriaB3_GEOGRAFIA B3_ENGENHARIAS_I B4_GEOCIÊNCIAS B4_CIÊNCIAS_AMBIENTAIS B5_CIÊNCIAS_AGRÁRIAS_I
Histórico (UTC)2019-08-28 11:22:28 :: simone -> administrator ::
2019-08-28 11:22:29 :: administrator -> simone :: 2019
2019-08-28 11:22:43 :: simone -> administrator :: 2019
2020-01-06 11:42:18 :: administrator -> simone :: 2019
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
Palavras-ChaveBRDF
vegetation indices
Amazon
dry season
greening
viewing-illumination effects
MODIS
ResumoWe used Moderate Resolution Imaging Spectroradiometer (MODIS) data, processed by the multi-angle implementation of atmospheric correction (MAIAC) algorithm, to investigate the sensitivity of seven vegetation indices (VIs) to bidirectional reflectance distribution function (BRDF) effects in the dry season (June-September) of the Brazilian Amazon. The analysis was first performed over three sites, located from north to south of the Amazon, and then extended into the entire region. We inspected for differences in viewing-illumination parameters and pixel quality retrievals during MODIS data acquisition over the region. By comparing and correlating corrected and non-corrected data for bidirectional effects, we evaluated monthly changes in reflectance and VIs (2000-2014). Finally, we computed the effect size of the BRDF correction using non-parametric Mann-Whitney tests and Cohen's r metrics. The results showed that the most anisotropic VIs were the enhanced vegetation index (EVI), photochemical reflectance index (PRI), and shortwave infrared normalized difference (SWND). These VIs presented the largest relative changes and the lowest correlation coefficients, between corrected and non-corrected data, because of the large effect size of the BRDF. The least anisotropic VI was the normalized difference water index (NDWI). The anisotropy of these VIs was stronger in the northern Amazon. It increased from the beginning to the end of the dry season, following changes in the relative azimuth angle (RAA) toward the BRDF hotspot in September. The modifications in the relative proportions of backscattering observations used in composite products caused a reflectance increase in all MODIS bands at the end of the dry season, especially in the near infrared (NIR). The reflectance decreased after BRDF correction. Because of the atmospheric effects, the view zenith angle (VZA) of the pixels selected in composite products decreased toward the south of the Amazon. In the southern Amazon, the seasonal amplitude in the solar zenith angle (SZA) reached values close to 18 degrees. For the most anisotropic index, the BRDF correction removed, on average, 30% of the EVI signal in June, and 60% of the EVI signal in September, reducing dry season variations over time. The results reinforce the need for bidirectional correction of MODIS data before the seasonal and inter-annual analyses of the most anisotropic VIs.
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URL dos dadoshttp://urlib.net/ibi/8JMKD3MGP3W34R/3TTJJEH
URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP3W34R/3TTJJEH
Idiomaen
Arquivo Alvoremotesensing-11-01650.pdf
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Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
8JMKD3MGPCW/3F3NU5S
Lista de Itens Citandosid.inpe.br/mtc-m21/2012/07.13.14.53.28 1
sid.inpe.br/bibdigital/2013/09.13.21.11 1
DivulgaçãoWEBSCI; PORTALCAPES; MGA; COMPENDEX; SCOPUS.
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3J9M5KB
Repositóriosid.inpe.br/mtc-m21b/2015/04.06.15.42
Última Atualização2015:04.07.19.01.43 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2015/04.06.15.42.13
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DOI10.1073/pnas.1423471112
ISSN1091-6490
Chave de CitaçãoHilkerLTHMWBMS:2015:EfEaAt
TítuloReply to Gonsamo et al.: Effect of the Eastern Atlantic-West Russia pattern on Amazon vegetation has not been demonstrated
Ano2015
MêsMar.
Data de Acesso18 abr. 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho540 KiB
2. Contextualização
Autor1 Hilker, Thomas
2 Lyapustin, Alexei
3 Tucker, Compton J.
4 Hall, Forrest G.
5 Myneni, Ranga B.
6 Wang, Yujie J.
7 Bi, Jian
8 Moura, Yhasmin Mendes
9 Sellers, Piers J.
Grupo1
2
3
4
5
6
7
8 DSR-OBT-INPE-MCTI-GOV-BR
Afiliação1 Coll Forestry
2 NASA
3 NASA
4 NASA
5 Boston University
6 NASA
7 Boston University
8 Instituto Nacional de Pesquisas Espaciais (INPE)
9 NASA
Endereço de e-Mail do Autor1 thomas.hilker@oregonstate.edu
2
3
4
5
6
7
8 yhasmin@dsr.inpe.br
RevistaProceedings of the National Academy of Sciences of the United Sates of America
Volume112
Número10
PáginasE1056
Histórico (UTC)2015-04-06 15:42:13 :: simone -> administrator ::
2018-06-04 02:55:19 :: administrator -> simone :: 2015
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãofinaldraft
ÁreaSRE
Arranjourlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Reply to Gonsamo...
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URL dos dadoshttp://urlib.net/ibi/8JMKD3MGP3W34P/3J9M5KB
URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP3W34P/3J9M5KB
Idiomaen
Grupo de Usuáriosadministrator
simone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Política de Arquivamentodenypublisher allowfinaldraft
Permissão de Leituraallow from all
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5. Fontes relacionadas
Repositório Espelhourlib.net/www/2011/03.29.20.55
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
Lista de Itens Citando
DivulgaçãoWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosabstract alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject targetfile tertiarymark tertiarytype url
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