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6 referências similares encontradas (inclusive a original) buscando em 22 dentre 22 Arquivos.
Data e hora local de busca: 16/05/2024 03:04.
1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3PE7BC8
Repositóriosid.inpe.br/mtc-m21b/2017/08.11.15.28   (acesso restrito)
Última Atualização2017:08.11.15.28.28 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2017/08.11.15.28.28
Última Atualização dos Metadados2018:06.04.02.27.42 (UTC) administrator
DOI10.5194/esd-8-439-2017
ISSN2190-4979
Chave de CitaçãoMaedaMaWaKiOkEaHu:2017:EvSeAc
TítuloEvapotranspiration seasonality across the Amazon Basin
Ano2017
MêsJune
Data de Acesso16 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho3037 KiB
2. Contextualização
Autor1 Maeda, Eduardo Eiji
2 Ma, Xuanlong
3 Wagner, Fabien Hubert
4 Kim, Hyungjun
5 Oki, Taikan
6 Eamus, Derek
7 Huete, Alfredo
Grupo1
2
3 DIDSR-CGOBT-INPE-MCTIC-GOV-BR
Afiliação1 University of Helsinki
2 University of Technology Sydney
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 The University of Tokyo
5 The University of Tokyo
6 University of Technology Sydney
7 University of Technology Sydney
Endereço de e-Mail do Autor1 eduardo.maeda@helsinki.fi
2
3 fabien.wagner@inpe.br
RevistaEarth System Dynamics
Volume8
Número2
Páginas439-454
Histórico (UTC)2017-08-11 15:30:01 :: simone -> administrator :: 2017
2018-06-04 02:27:42 :: administrator -> simone :: 2017
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Tipo de Versãopublisher
ResumoEvapotranspiration (ET) of Amazon forests is a main driver of regional climate patterns and an important indicator of ecosystem functioning. Despite its importance, the seasonal variability of ET over Amazon forests, and its relationship with environmental drivers, is still poorly understood. In this study, we carry out a water balance approach to analyse seasonal patterns in ET and their relationships with water and energy drivers over five sub-basins across the Amazon Basin. We used in situ measurements of river discharge, and remotely sensed estimates of terrestrial water storage, rainfall, and solar radiation. We show that the characteristics of ET seasonality in all sub-basins differ in timing and magnitude. The highest mean annual ET was found in the northern Rio Negro basin ( ∼ 1497 mm year−1 ) and the lowest values in the Solimões River basin (∼ 986 mm year−1 ). For the first time in a basin-scale study, using observational data, we show that factors limiting ET vary across climatic gradients in the Amazon, confirming local-scale eddy covariance studies. Both annual mean and seasonality in ET are driven by a combination of energy and water availability, as neither rainfall nor radiation alone could explain patterns in ET. In southern basins, despite seasonal rainfall deficits, deep root water uptake allows increasing rates of ET during the dry season, when radiation is usually higher than in the wet season. We demonstrate contrasting ET seasonality with satellite greenness across Amazon forests, with strong asynchronous relationships in ever-wet watersheds, and positive correlations observed in seasonally dry watersheds. Finally, we compared our results with estimates obtained by two ET models, and we conclude that neither of the two tested models could provide a consistent representation of ET seasonal patterns across the Amazon.
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Arquivo Alvomaeda_evapotranspiration.pdf
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Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
Lista de Itens Citandosid.inpe.br/bibdigital/2013/09.13.21.11 2
DivulgaçãoWEBSCI; PORTALCAPES; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosalternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m16d.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP7W/3B5HKLP
Repositóriosid.inpe.br/mtc-m19/2012/01.04.17.32   (acesso restrito)
Última Atualização2013:08.01.16.17.27 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m19/2012/01.04.17.32.31
Última Atualização dos Metadados2021:02.25.02.58.38 (UTC) administrator
Chave SecundáriaINPE--PRE/
DOI10.1016/j.agrformet.2013.04.031
ISSN0168-1923
Rótuloself-archiving-INPE-MCTI-GOV-BR
Chave de CitaçãoRestrepo-CoupeRHABCCCCCFGKMMMMN-SSTWZS:2013:WhDrSe
TítuloWhat drives the seasonality of photosynthesis across the Amazon basin? A cross-site analysis of eddy flux tower measurements from the Brasil flux network
Ano2013
Data de Acesso16 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho1883 KiB
2. Contextualização
Autor 1 Restrepo-Coupe, Natalia
 2 Rocha, Humberto Ribeiro da
 3 Hutyra, Lucy R.
 4 Araujo, Alessandro C. de
 5 Borma, Laura De Simone
 6 Christoffersen, Bradley
 7 Cabral, Osvaldo Machado Rodrigues
 8 Camargo, Plinio B. de
 9 Cardoso, Fernando Luiz
10 Costa, Antonio Carlos Lola da
11 Fitzjarrald, David R.
12 Goulden, Michael L.
13 Kruijt, Bart
14 Maia, Jair M. F.
15 Malhi, Yadvinder S.
16 Manzi, Antonio Ocimar
17 Miller, Scott D.
18 Nobre, Antonio Donato
19 von-Randow, Celso
20 Sá, Leonardo Deane Abreu
21 Sakai, Ricardo K.
22 Tota, Julio
23 Wofsy, Steven C.
24 Zanchi, Fabricio B.
25 Saleska, Scott R.
Grupo 1
 2
 3
 4
 5 CST-CST-INPE-MCTI-GOV-BR
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19 CST-CST-INPE-MCTI-GOV-BR
20 CRA-CCR-INPE-MCTI-GOV-BR
Afiliação 1 Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
 2 Department of Atmospheric Sciences, Universidade de São Paulo, São Paulo, Brazil
 3 Boston University, Department of Earth and Environment, Boston 02215, USA
 4 Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil
 5 Instituto Nacional de Pesquisas Espaciais (INPE)
 6 Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
 7 Embrapa Meio Ambiente, Jaguariuna, Brazil
 8 University of Technology Sydney, Sydney, NSW 2007, Australia
 9 Universidade Federal do Tocantins, Tocantins, Brazil
10 Universidade Federal do Para, Belem, Brazil
11 Atmospheric Sciences Research Center, State University of New York, Albany, NY, USA
12 Department of Earth System Science, University of California Irvine, Irvine, CA 92697, USA
13 Alterra, Wageningen University and Research Centre, Wageningen 6700, The Netherlands
14 Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil
15 Oxford University Centre for the Environment, Oxford OX1 3QY, UK
16 Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil
17 Atmospheric Sciences Research Center, State University of New York, Albany, NY, USA
18 Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil
19 Instituto Nacional de Pesquisas Espaciais (INPE)
20 Instituto Nacional de Pesquisas Espaciais (INPE)
21 Atmospheric Sciences Research Center, State University of New York, Albany, NY, USA
22 Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Amazonas, Brazil
23 Division of Applied Sciences, Harvard University, Cambridge, MA 02138, USA
24 Universidade Federal do Amazonas (UFAM), Educação, Agricultura e Ambiente (IEAA), Manaus, Amazonas, Brazil
25 Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
Endereço de e-Mailsecretaria.cpa@dir.inpe.br
RevistaAgricultural and Forest Meteorology
Volume182-183
Páginas128-144
Nota SecundáriaA1 A1 A1 A1 A1 A1 A2 A2 B2
Histórico (UTC)2012-01-06 11:08:04 :: secretaria.cpa@dir.inpe.br -> administrator :: 2011
2013-08-01 16:17:27 :: administrator :: 2011 -> 2013
2021-02-25 02:58:38 :: administrator -> marcelo.pazos@inpe.br :: 2013
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-Chaveclimate change
climate effect
ecosystem modeling
eddy covariance
evapotranspiration
forest ecosystem
land use change
latent heat flux
light effect
litterfall
net ecosystem production
phenology
photosynthesis
seasonality
solar radiation
tropical forest
Amazon Basin
Brazil
ResumoWe investigated the seasonal patterns of Amazonian forest photosynthetic activity, and the effects thereon of variations in climate and land-use, by integrating data from a network of ground-based eddy flux towers in Brazil established as part of the 'Large-Scale Biosphere Atmosphere Experiment in Amazonia' project. We found that degree of water limitation, as indicated by the seasonality of the ratio of sensible to latent heat flux (Bowen ratio) predicts seasonal patterns of photosynthesis. In equatorial Amazonian forests (5° N-5° S), water limitation is absent, and photosynthetic fluxes (or gross ecosystem productivity, GEP) exhibit high or increasing levels of photosynthetic activity as the dry season progresses, likely a consequence of allocation to growth of new leaves. In contrast, forests along the southern flank of the Amazon, pastures converted from forest, and mixed forest-grass savanna, exhibit dry-season declines in GEP, consistent with increasing degrees of water limitation. Although previous work showed tropical ecosystem evapotranspiration (ET) is driven by incoming radiation, GEP observations reported here surprisingly show no or negative relationships with photosynthetically active radiation (PAR). Instead, GEP fluxes largely followed the phenology of canopy photosynthetic capacity (Pc), with only deviations from this primary pattern driven by variations in PAR. Estimates of leaf flush at three non-water limited equatorial forest sites peak in the dry season, in correlation with high dry season light levels. The higher photosynthetic capacity that follows persists into the wet season, driving high GEP that is out of phase with sunlight, explaining the negative observed relationship with sunlight. Overall, these patterns suggest that at sites where water is not limiting, light interacts with adaptive mechanisms to determine photosynthetic capacity indirectly through leaf flush and litterfall seasonality. These mechanisms are poorly represented in ecosystem models, and represent an important challenge to efforts to predict tropical forest responses to climatic variations.
ÁreaCST
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Arquivo Alvo1-s2.0-S0168192313001184-main.pdf
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Repositório Espelhoiconet.com.br/banon/2006/11.26.21.31
Unidades Imediatamente Superiores8JMKD3MGPCW/3EUAE4H
8JMKD3MGPCW/3F3T29H
Lista de Itens Citandosid.inpe.br/bibdigital/2013/10.03.18.52 1
sid.inpe.br/bibdigital/2013/10.19.20.40 1
DivulgaçãoWEBSCI; PORTALCAPES; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m19@80/2009/08.21.17.02
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel electronicmailaddress format isbn lineage mark month nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate 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-m16b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificadorx6e6X3pFwXQZ3DUS8rS5/z54Dd
Repositóriocptec.inpe.br/walmeida/2003/08.06.15.46   (acesso restrito)
Última Atualização2004:12.14.02.00.00 (UTC) administrator
Repositório de Metadadoscptec.inpe.br/walmeida/2003/08.06.15.46.14
Última Atualização dos Metadados2021:02.10.18.59.19 (UTC) administrator
Chave SecundáriaINPE-9994-PRE/5554
ISSN0177-798X
Chave de CitaçãoMarengo:2004:InVaTr
TítuloInterdecadal variability and trends of rainfall across the Amazon basin.
ProjetoLBA
Ano2004
MêsJune
Data de Acesso16 maio 2024
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho2142 KiB
2. Contextualização
AutorMarengo, Jose Antonio
GrupoDMD-INPE-MCT-BR
AfiliaçãoCPTEC/INPE Cachoeira Paulista-12630-000 SP-Brasil
Endereço de e-Maildeicy@cptec.inpe.br
RevistaTheoretical and Applied Climatology
Volume78
Número1-3
Páginas79-96
Histórico (UTC)2004-11-24 17:34:45 :: Deixy -> Deicy ::
2004-12-14 11:51:04 :: Deicy -> administrator ::
2012-10-21 21:41:59 :: administrator -> Deicy :: 2004
2013-02-20 14:52:30 :: Deicy -> administrator :: 2004
2021-02-10 18:59:19 :: administrator -> marciana :: 2004
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Palavras-Chavesea-surface temperature
general-circulation model
tropical South America
interannual variability
climate-change
monthly precipitation
regional climate
hydrologic-cycle
river-runoff
water-vapor
Amazonia
rainfall
El-Nino
ResumoAn analysis of decadal and long-term pattems of rainfall has been carried out using a combination of .raing-gauge and gridded rinfall data sets, for the entire Amazon basin and for its northern and southern sub basins. The study covers 1929-98, but more detailed anaiyses were performed during 1950-98 regarding rainfall variability and variations in circulation and sea surrare temperature fields. Negative rainfall trends were identified for the entire Amazonia, while at regional levels there is a negative trend in northern Amazonia and positive trend in southern Amazonia. Perhaps, the most important aspects of this work is the identification of decadal time scale variations in rainfall in Amazonia, with periods of relatively drier and wetter conditions, which are contrasting for northern and southern Amazonia. Spectral analyses show decadal time scales variations in southern Amazonia, while northem Amazonia exhibits both interannual and decadal scale variations. Shifts on the rainfall regime in both sections ofthe Amazon basin were identified in middle 1940's and 1970's. After 1975-76, northern Amazonia exhibited less rainfall than before 1975. Changes in the circulation and oceanic fields after 1975 suggest an important role of the warming of the tropical central and eastern Pacific on the decreasing rainfall in northern Amazonia, due to more frequent/intense strong El Nifio events during the relativeiy dry period 1975-98.
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Arquivo Alvo704_2004_Article_045.pdf
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Acervo Hospedeirocptec.inpe.br/walmeida/2003/04.25.17.12
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype
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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemarte3.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador6qtX3pFwXQZ3r59YCT/GTkg9
Repositóriosid.inpe.br/iris@1905/2005/07.27.10.12
Última Atualização2015:09.02.18.46.27 (UTC) marciana
Repositório de Metadadossid.inpe.br/iris@1905/2005/07.27.10.12.55
Última Atualização dos Metadados2018:06.06.04.12.44 (UTC) administrator
Chave SecundáriaINPE-8420-PRE/4192
ISSN0148-0227
2156-2202
Rótulo9444
Chave de CitaçãoBrowellGregHarr:1988:TrOzAe
TítuloTropospheric Ozone and Aerosol Distributions, Across the Amazon Basin
ProjetoGDE
Ano1988
Data Secundária20011107
MêsFeb.
Data de Acesso16 maio 2024
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho2941 KiB
2. Contextualização
Autor1 Browell, E. V.
2 Gregory, G. L
3 Harriss, R. C.
Grupo1 INPE-BR
RevistaJournal of Geophysical Research
Volume93
NúmeroD2
Páginas1431-1451
Histórico (UTC)2014-09-29 15:19:41 :: administrator -> marciana :: 1988
2015-09-02 18:46:27 :: marciana -> administrator :: 1988
2018-06-06 04:12:44 :: administrator -> marciana :: 1988
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Palavras-ChaveGEOFÍSICA ESPACIAL
Amazônia (Região)América do Sul
troposfera
ozônio
aerosois
distribuição
troposphere
ozone
aerosols
distribution
ResumoOzone and aerosol distributions were measured during July-August 1985 over the tropical rain forest of Brazil as part of the NASA Global Tropospheric Experiment to study the Amazon boundary layer. Remote and in situ measurements of O3 and aerosols were made from a NASA Electra aircraft on several long-range flights spanning different areas between Tabatinga and Belem, Brazil. Continuous O3 distributions were obtained between the aircraft altitude and the ground with an airborne differential absorption lidar (DIAL)system. Aerosol distributions were also continuously measured above and below the aircraft with the DIAL system. In Situ O3 measurements were made on the aircraft and from ground-launched ozonesondes at Manaus and Natal. Large-scale variations in the vertical and horizontal distributions of O3 and aerosols were observed on nearly all flights over the Amazon Basin, with O3 exceeding 50 parts per billion by volume (ppbv)in some regions. Both positive and negative correlations were observed between O3 mixing ratios and aerosol concentrations. In nearly all cases, when O3 and aerosols were negatively correlated, this represented clean, midtropospheric air, and when they were positively correlated, the air mass had undergone photochemical O3 production as a result of biomass burning. A 59 increase in the planetary boundary layer (PBL)O3 level was observed between the initial Manaus-Belem flights on July 23-24, 1985 and the later flights on August 8-9, 1985. This was attributed to the increase in biomass burning near the Rio Amazonas and its tributaries and in savannah regions south of the Amazon Basin. Flights to the west of Manaus measured enhanced O3 and aerosol levels near the Rio Solimões, while the area sampled upwind of the river exhibited lower O3 levels. This was explained by the increased incidence of biomass burning near the river. This paper also examines the variability of the trade wind inversion (TWI)height across the Amazon Basin and the influence of O3.levels above the TWI on the budget of, O3 in the PBL. Measurements reported for the early dry -season characterize the background distribution of O3 and aerosols in the PBL prior to the onset of extensive biomass burning. These data provide the basis for a basin-scale estimate of photochemical O3 production from biomass-burning emissions.
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Arquivo Alvo1988_browel.pdf
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6. Notas
Campos Vaziosaffiliation alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel doi e-mailaddress electronicmailaddress format isbn language lineage mark mirrorrepository nextedition nexthigherunit notes orcid parameterlist parentrepositories previousedition previouslowerunit progress readpermission resumeid rightsholder schedulinginformation secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype
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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/3MPQED8
Repositóriosid.inpe.br/mtc-m21b/2016/11.11.18.01   (acesso restrito)
Última Atualização2016:11.11.18.01.47 (UTC) simone
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DOI10.1016/j.jag.2016.05.005
ISSN0303-2434
Chave de CitaçãoMaedaMWHLWCMAS:2016:CoVeIn
TítuloConsistency of vegetation index seasonality across the Amazon rainforest
Ano2016
MêsOct.
Data de Acesso16 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho5242 KiB
2. Contextualização
Autor 1 Maeda, Eduardo Eiji
 2 Moura, Yhasmin Mendes de
 3 Wagner, Fabien Hubert
 4 Hilker, Thomas
 5 Lyapustin, Alexei I.
 6 Wang, Yujie
 7 Chave, Jerome
 8 Mottus, Matti
 9 Aragão, Luiz Eduardo Oliveira e Cruz de
10 Shimabukuro, Yosio Edemir
Identificador de Curriculo 1
 2
 3
 4
 5
 6
 7
 8
 9
10 8JMKD3MGP5W/3C9JJCQ
Grupo 1
 2 SER-SRE-SPG-INPE-MCTI-GOV-BR
 3 DSR-OBT-INPE-MCTI-GOV-BR
 4
 5
 6
 7
 8
 9 DSR-OBT-INPE-MCTI-GOV-BR
10 DSR-OBT-INPE-MCTI-GOV-BR
Afiliação 1 University of Helsinki
 2 Instituto Nacional de Pesquisas Espaciais (INPE)
 3 Instituto Nacional de Pesquisas Espaciais (INPE)
 4 Oregon State University
 5 NASA Goddard Space Flight Center
 6 University of Maryland
 7 Université Paul Sabatier
 8 University of Helsinki
 9 Instituto Nacional de Pesquisas Espaciais (INPE)
10 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor 1 eduardo.maeda@helsinki.fi
 2 yhas.mendes@gmail.com
 3 fabien.wagner@inpe.br
 4
 5
 6
 7
 8
 9 luiz.aragao@inpe.br
10 yosio.shimabukuro@inpe.br
RevistaInternational Journal of Applied Earth Observation and Geoinformation
Volume52
Páginas42-53
Nota SecundáriaB1_GEOCIÊNCIAS
Histórico (UTC)2016-11-11 18:01:47 :: simone -> administrator ::
2016-11-11 18:01:48 :: administrator -> simone :: 2016
2016-11-11 18:03:18 :: simone -> administrator :: 2016
2016-11-12 18:53:47 :: administrator -> simone :: 2016
2016-12-22 16:55:19 :: simone -> administrator :: 2016
2018-06-04 02:41:16 :: administrator -> simone :: 2016
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-ChaveMODIS
MAIAC
Seasonality
Phenology
EVI
NDVI
GEP
BRDF effect
ResumoVegetation indices (VIs) calculated from remotely sensed reflectance are widely used tools for characterizing the extent and status of vegetated areas. Recently, however, their capability to monitor the Amazon forest phenology has been intensely scrutinized. In this study, we analyze the consistency of VIs seasonal patterns obtained from two MODIS products: the Collection 5 BRDF product (MCD43) and the Multi-Angle Implementation of Atmospheric Correction algorithm (MAIAC). The spatio-temporal patterns of the VIs were also compared with field measured leaf litterfall, gross ecosystem productivity and active microwave data. Our results show that significant seasonal patterns are observed in all VIs after the removal of view-illumination effects and cloud contamination. However, we demonstrate inconsistencies in the characteristics of seasonal patterns between different VIs and MODIS products. We demonstrate that differences in the original reflectance band values form a major source of discrepancy between MODIS VI products. The MAIAC atmospheric correction algorithm significantly reduces noise signals in the red and blue bands. Another important source of discrepancy is caused by differences in the availability of clear-sky data, as the MAIAC product allows increased availability of valid pixels in the equatorial Amazon. Finally, differences in Vis seasonal patterns were also caused by MODIS collection 5 calibration degradation. The correlation of remote sensing and field data also varied spatially, leading to different temporal offsets between Vls, active microwave and field measured data. We conclude that recent improvements in the MAIAC product have led to changes in the characteristics of spatio-temporal patterns of VIs seasonality across the Amazon forest, when compared to the MCD43 product. Nevertheless, despite improved quality and reduced uncertainties in the MAIAC product, a robust biophysical interpretation of VIs seasonality is still missing.
ÁreaSRE
Arranjo 1urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Consistency of vegetation...
Arranjo 2urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > SER > Consistency of vegetation...
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4. Condições de acesso e uso
Idiomaen
Arquivo Alvomaeda_consistency.pdf
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft24
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhourlib.net/www/2011/03.29.20.55
Unidades Imediatamente Superiores8JMKD3MGPCW/3ER446E
8JMKD3MGPCW/3F3NU5S
Lista de Itens Citandosid.inpe.br/bibdigital/2013/10.18.22.34 4
sid.inpe.br/bibdigital/2013/09.13.21.11 2
DivulgaçãoWEBSCI; PORTALCAPES; SCOPUS.
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark nextedition notes number orcid 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/48L39M5
Repositóriosid.inpe.br/mtc-m21d/2023/03.02.12.41   (acesso restrito)
Última Atualização2023:03.02.12.41.37 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21d/2023/03.02.12.41.37
Última Atualização dos Metadados2024:01.02.17.16.40 (UTC) administrator
DOI10.1016/j.isprsjprs.2022.12.001
ISSN0924-2716
Chave de CitaçãoGonçalvesSiWuPoStNe:2023:AmFoSp
TítuloAmazon forest spectral seasonality is consistent across sensor resolutions and driven by leaf demography
Ano2023
MêsFeb.
Data de Acesso16 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho5876 KiB
2. Contextualização
Autor1 Gonçalves, Nathan Borges
2 Silva, Ricardo Dalagnol da
3 Wu, Jin
4 Pontes Lopes, Aline
5 Stark, Scott C.
6 Nelson, Bruce W.
Grupo1
2 SER-SRE-DIPGR-INPE-MCTI-GOV-BR
3
4 SER-SRE-DIPGR-INPE-MCTI-GOV-BR
Afiliação1 Michigan State University
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 The University of Hong Kong
4 Instituto Nacional de Pesquisas Espaciais (INPE)
5 Michigan State University
6 Instituto Nacional de Pesquisas da Amazônia (INPA)
Endereço de e-Mail do Autor1 nathanborges@gmail.com
2 dalagnol@ucla.edu
3 jinwu@hku.hk
4 alineplopes@gmail.com
5 scstark@msu.edu
6 bnelsonbr@gmail.com
RevistaISPRS Journal of Photogrammetry and Remote Sensing
Volume196
Páginas93-104
Nota SecundáriaA1_GEOCIÊNCIAS A2_INTERDISCIPLINAR A2_CIÊNCIAS_AMBIENTAIS B1_ENGENHARIAS_IV B1_BIODIVERSIDADE C_CIÊNCIAS_AGRÁRIAS_I
Histórico (UTC)2023-03-02 12:41:37 :: simone -> administrator ::
2023-03-02 12:41:38 :: administrator -> simone :: 2023
2023-03-02 12:43:08 :: simone -> administrator :: 2023
2024-01-02 17:16:40 :: 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-ChaveCentral Amazon
Drought
Dry season green-up
Enhanced Vegetation Index
Green chromatic coordinate
Leaf demography
Phenocam
Tropical forest
ResumoControversy surrounds the reported dry season greening of the Central Amazon forests based on the Enhanced Vegetation Index (EVI) from the Moderate Resolution Imaging Spectroradiometer (MODIS). As the solar zenith angle decreases during the dry season, it affects the sub-pixel shade content and artificially increases Near-infrared (NIR) reflectance and EVI. MODIS' coarse resolution also creates a challenge for cloud and terrain filtering. To reduce these artifacts and then validate MODIS seasonal spectral patterns we use 16 years of 1 km resolution MODIS-MAIAC (Multi-Angle Implementation of Atmospheric Correction) images, corrected to a nadir view and 45° solar zenith angle, together with an improved cloud filter. Then we show that the 30 m Landsat-8 Operational Land Imager (OLI) surface reflectance over two Landsat scenes provides independent evidence supporting the MODIS-MAIAC seasonality for EVI, NIR, and GCC (an additional important vegetation index, green chromatic coordinate). Our empirical method for controlling for sun-sensor geometry effects in Landsat scenes encompasses the use of seasonally distinct images that have similar solar zenith angles and cloud-free pixels on flat uplands having the same phase angle. We extended this validation to nine Amazon sub-basins comprising ∼546 Landsat-8 images. Our study shows that the dry-season green-up pattern observed by MODIS is corroborated by Landsat-8, and is independent of satellite data artifacts. To investigate the mechanisms driving these seasonal changes we further used Central Amazon tower-mounted RGB cameras providing a 4-year record at the Amazon Tall Tower (ATTO, 2°8′36″S, 59°0′2″W) and a 7-year record at the Manaus k34 tower (2°36′33″ S, 60°12′33″W) to obtain monthly upper canopy green leaf cover (a proxy for Leaf Area Index - LAI) and monthly leaf age class abundances (based on the age since leaf flushing, by crown). These were compared to seasonal patterns of GCC and EVI in small MODIS-MAIAC windows centered on each tower. MODIS-MAIAC GCC was positively correlated with newly flushed leaves (R2 = 0.76 and 0.44 at ATTO and k34, respectively). EVI correlated strongly with the abundance of mature leaves (R2 = 0.82 and 0.80) but was poorly correlated with LAI (R2 = 0.20 and 0.41, respectively). Therefore, seasonal spectral patterns in the Central Amazon are likely controlled by leaf age variation, not quantity of leaf area.
ÁreaSRE
Arranjo 1urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > SER > Amazon forest spectral...
Arranjo 2urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCT > Amazon forest spectral...
Conteúdo da Pasta docacessar
Conteúdo da Pasta sourcenão têm arquivos
Conteúdo da Pasta agreement
agreement.html 02/03/2023 09:41 1.0 KiB 
4. Condições de acesso e uso
Idiomaen
Arquivo Alvo1-s2.0-S0924271622003173-main.pdf
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Política de Arquivamentodenypublisher denyfinaldraft24
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3F3NU5S
8JMKD3MGPCW/46KUATE
Lista de Itens Citandosid.inpe.br/bibdigital/2013/10.18.22.34 3
sid.inpe.br/bibdigital/2022/04.03.22.23 2
DivulgaçãoWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
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 mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
7. Controle da descrição
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