Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.panamjas.org/pdf_artigos/PANAMJAS_5(2)_236-253.pdf http://hdl.handle.net/11449/71916 |
Resumo: | Forecast of biological consequences of climate changes depend on both long-term observations and the establishment of carbon budgets within pelagic ecosystems, including the assessment of biomasses and activities of all players in the global carbon cycle. Approximately 25% of oceanic primary happen over continental shelves, so these are important sites for studies of global carbon dynamics. The Brazilian Continental Shelf (BCS) has sparse and non-systematic in situ information on phytoplankton biomass, making products derived from ocean color remote sensing extremely valuable. This work analyzes chlorophyll concentration (Chl) estimated from four ocean color sensors (CZCS, OCTS, SeaWiFS and MODIS) over the BCS, to compare Chl and annual cycles meridionally. Also, useful complementary ocean color variables are presented. Chl gradients increased from the central region towards north and south, limited by estuarine plumes of Amazon and La Plata rivers, and clear annual Chl cycles appear in most areas. In southern and central areas, annual cycles show strong seasonal variability while interannual and long-term variability are equally important in the remaining areas. This is the first comparative evaluation of the Chl over the BCS and will aid the understanding of its long-term variability; essential initial step for discussions of climate changes. |
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Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileiraTemporal and meridional variability of Satellite-estimates of surface chlorophyll concentration over the Brazilian continental shelfAnnual variabilityCDOM indexChlorophyll concentrationFluorescence line heightOcean color remote sensingSouth West AtlanticForecast of biological consequences of climate changes depend on both long-term observations and the establishment of carbon budgets within pelagic ecosystems, including the assessment of biomasses and activities of all players in the global carbon cycle. Approximately 25% of oceanic primary happen over continental shelves, so these are important sites for studies of global carbon dynamics. The Brazilian Continental Shelf (BCS) has sparse and non-systematic in situ information on phytoplankton biomass, making products derived from ocean color remote sensing extremely valuable. This work analyzes chlorophyll concentration (Chl) estimated from four ocean color sensors (CZCS, OCTS, SeaWiFS and MODIS) over the BCS, to compare Chl and annual cycles meridionally. Also, useful complementary ocean color variables are presented. Chl gradients increased from the central region towards north and south, limited by estuarine plumes of Amazon and La Plata rivers, and clear annual Chl cycles appear in most areas. In southern and central areas, annual cycles show strong seasonal variability while interannual and long-term variability are equally important in the remaining areas. This is the first comparative evaluation of the Chl over the BCS and will aid the understanding of its long-term variability; essential initial step for discussions of climate changes.Laboratório Aquarela UNESP Campus Experimental do Litoral Paulista, Praça Infante Dom Henrique S/N Parque Bitaru, São Vicente (SP), 11330-900Instituto de Oceanografia Universidade Federal do Rio Grande, Av Itália km 8, Rio Grande (RS), 96201-900Laboratório Aquarela UNESP Campus Experimental do Litoral Paulista, Praça Infante Dom Henrique S/N Parque Bitaru, São Vicente (SP), 11330-900Universidade Estadual Paulista (Unesp)Universidade Federal do Rio GrandeCiotti, Áurea M. [UNESP]Garcia, Carlos A.E.Jorge, Daniel S.F. [UNESP]2014-05-27T11:24:49Z2014-05-27T11:24:49Z2010-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article64-81application/pdfhttp://www.panamjas.org/pdf_artigos/PANAMJAS_5(2)_236-253.pdfPan-American Journal of Aquatic Sciences, v. 5, n. 2, p. 64-81, 2010.1809-9009http://hdl.handle.net/11449/719162-s2.0-792515828792-s2.0-79251582879.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporPan-American Journal of Aquatic Sciences0,176info:eu-repo/semantics/openAccess2023-11-16T06:09:02Zoai:repositorio.unesp.br:11449/71916Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:49:10.583587Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira Temporal and meridional variability of Satellite-estimates of surface chlorophyll concentration over the Brazilian continental shelf |
title |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira |
spellingShingle |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira Ciotti, Áurea M. [UNESP] Annual variability CDOM index Chlorophyll concentration Fluorescence line height Ocean color remote sensing South West Atlantic |
title_short |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira |
title_full |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira |
title_fullStr |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira |
title_full_unstemmed |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira |
title_sort |
Variabilidade temporal e meridional de estimativas de Satélite da concentração de clorofila superficial na plataforma continental brasileira |
author |
Ciotti, Áurea M. [UNESP] |
author_facet |
Ciotti, Áurea M. [UNESP] Garcia, Carlos A.E. Jorge, Daniel S.F. [UNESP] |
author_role |
author |
author2 |
Garcia, Carlos A.E. Jorge, Daniel S.F. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal do Rio Grande |
dc.contributor.author.fl_str_mv |
Ciotti, Áurea M. [UNESP] Garcia, Carlos A.E. Jorge, Daniel S.F. [UNESP] |
dc.subject.por.fl_str_mv |
Annual variability CDOM index Chlorophyll concentration Fluorescence line height Ocean color remote sensing South West Atlantic |
topic |
Annual variability CDOM index Chlorophyll concentration Fluorescence line height Ocean color remote sensing South West Atlantic |
description |
Forecast of biological consequences of climate changes depend on both long-term observations and the establishment of carbon budgets within pelagic ecosystems, including the assessment of biomasses and activities of all players in the global carbon cycle. Approximately 25% of oceanic primary happen over continental shelves, so these are important sites for studies of global carbon dynamics. The Brazilian Continental Shelf (BCS) has sparse and non-systematic in situ information on phytoplankton biomass, making products derived from ocean color remote sensing extremely valuable. This work analyzes chlorophyll concentration (Chl) estimated from four ocean color sensors (CZCS, OCTS, SeaWiFS and MODIS) over the BCS, to compare Chl and annual cycles meridionally. Also, useful complementary ocean color variables are presented. Chl gradients increased from the central region towards north and south, limited by estuarine plumes of Amazon and La Plata rivers, and clear annual Chl cycles appear in most areas. In southern and central areas, annual cycles show strong seasonal variability while interannual and long-term variability are equally important in the remaining areas. This is the first comparative evaluation of the Chl over the BCS and will aid the understanding of its long-term variability; essential initial step for discussions of climate changes. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-10-01 2014-05-27T11:24:49Z 2014-05-27T11:24:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.panamjas.org/pdf_artigos/PANAMJAS_5(2)_236-253.pdf Pan-American Journal of Aquatic Sciences, v. 5, n. 2, p. 64-81, 2010. 1809-9009 http://hdl.handle.net/11449/71916 2-s2.0-79251582879 2-s2.0-79251582879.pdf |
url |
http://www.panamjas.org/pdf_artigos/PANAMJAS_5(2)_236-253.pdf http://hdl.handle.net/11449/71916 |
identifier_str_mv |
Pan-American Journal of Aquatic Sciences, v. 5, n. 2, p. 64-81, 2010. 1809-9009 2-s2.0-79251582879 2-s2.0-79251582879.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Pan-American Journal of Aquatic Sciences 0,176 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
64-81 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128862760992768 |