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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21b.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34P/3KLMTJ2
Repositorysid.inpe.br/mtc-m21b/2015/11.26.13.48   (restricted access)
Last Update2016:01.05.18.35.43 (UTC) administrator
Metadata Repositorysid.inpe.br/mtc-m21b/2015/11.26.13.48.26
Metadata Last Update2018:06.04.02.55.52 (UTC) administrator
DOI10.1016/j.rse.2015.10.015
ISSN0034-4257
Citation KeyMouraHLGSASA:2015:SeDrEf
TitleSeasonality and drought effects of Amazonian forests observed from multi-angle satellite data
Year2015
MonthDec.
Access Date2024, Apr. 20
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size3356 KiB
2. Context
Author1 Moura, Yhasmin Mendes de
2 Hilker, Thomas
3 Lyapustin, Alexei I.
4 Galvão, Lênio Soares
5 Santos, João Roberto dos
6 Anderson, Liana O.
7 Sousa, Célio Helder Resende de
8 Arai, Egidio
Resume Identifier1
2
3
4 8JMKD3MGP5W/3C9JHLF
5 8JMKD3MGP5W/3C9JHF4
6
7
8 8JMKD3MGP5W/3C9JGUP
Group1 SER-SRE-SPG-INPE-MCTI-GOV-BR
2
3
4 DSR-OBT-INPE-MCTI-GOV-BR
5 DSR-OBT-INPE-MCTI-GOV-BR
6
7
8 DSR-OBT-INPE-MCTI-GOV-BR
Affiliation1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Oregon State University
3 NASA Goddard Space Flight Center
4 Instituto Nacional de Pesquisas Espaciais (INPE)
5 Instituto Nacional de Pesquisas Espaciais (INPE)
6 University of Oxford
7 Oregon State University
8 Instituto Nacional de Pesquisas Espaciais (INPE)
Author e-Mail Address1 yhas.mendes@gmail.com
2
3
4 lenio.galvao@inpe.br
5 jroberto@ltid.inpe.br
6
7
8 egidio.arai@inpe.br
JournalRemote Sensing of Environment
Volume171
Pages278-290
Secondary MarkA1_INTERDISCIPLINAR A1_GEOCIÊNCIAS A1_ENGENHARIAS_I A1_CIÊNCIAS_BIOLÓGICAS_I A1_CIÊNCIAS_AMBIENTAIS A1_CIÊNCIAS_AGRÁRIAS_I A1_BIODIVERSIDADE
History (UTC)2015-11-26 13:48:26 :: simone -> administrator ::
2018-06-04 02:55:52 :: administrator -> simone :: 2015
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
KeywordsAmazon
Drought
Anisotropy
Greening
Browning
MAIAC
MODIS
AbstractSeasonality and drought in Amazon rainforests have been controversially discussed in the literature, partially due to a limited ability of current remote sensing techniques to detect its impacts on tropical vegetation. We use a multi-angle remote sensing approach to determine changes in vegetation structure from differences in directional scattering (anisotropy) observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) with data atmospherically corrected by the Multi-Angle Implementation Atmospheric Correction Algorithm (MAIAC). Our results show a strong linear relationship between anisotropy and field (r2 = 0.70) and LiDAR (r2 = 0.88) based estimates of LAI even in dense canopies (LAI ≤ 7 m2 m− 2). This allowed us to obtain improved estimates of vegetation structure from optical remote sensing. We used anisotropy to analyze Amazon seasonality based on spatially explicit estimates of onset and length of dry season obtained from the Tropical Rainfall Measurement Mission (TRMM). An increase in vegetation greening was observed during the beginning of dry season (across ~ 7% of the basin), which was followed by a decline (browning) later during the dry season (across ~ 5% of the basin). Anomalies in vegetation browning were particularly strong during the 2005 and 2010 drought years (~ 10% of the basin). We show that the magnitude of seasonal changes can be significantly affected by regional differences in onset and duration of the dry season. Seasonal changes were much less pronounced when assuming a fixed dry season from June through September across the Amazon Basin. Our findings reconcile remote sensing studies with field based observations and model results as they provide a sounder basis for the argument that tropical vegetation growth increases during the beginning of the dry season, but declines after extended drought periods. The multi-angle approach used in this work may help quantify drought tolerance and seasonality in the Amazonian forests.
AreaSRE
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4. Conditions of access and use
Languageen
User Groupsimone
Reader Groupadministrator
simone
Visibilityshown
Archiving Policydenypublisher allowfinaldraft24
Read Permissiondeny from all and allow from 150.163
Update Permissionnot transferred
5. Allied materials
Mirror Repositoryurlib.net/www/2011/03.29.20.55
Next Higher Units8JMKD3MGPCW/3ER446E
8JMKD3MGPCW/3F3NU5S
Citing Item Listsid.inpe.br/mtc-m21/2012/07.13.14.45.03 4
sid.inpe.br/mtc-m21/2012/07.13.14.51.02 3
sid.inpe.br/mtc-m21/2012/07.13.14.53.28 1
DisseminationWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Host Collectionsid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notes
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