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Validation of standard and alternative satellite ocean-color chlorophyll products off Western Iberia

2015Journal article Open access
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dc.contributor.authorSá, Carolina
dc.contributor.authorD'Alimonte, Davide
dc.contributor.authorBrito, A.
dc.contributor.authorKajiyama, T.
dc.contributor.authorMendes, C. R.
dc.contributor.authorVitorino, J.
dc.contributor.authorOliveira, P. B.
dc.contributor.authorda Silva, J. C. B.
dc.contributor.authorBrotas, V.
dc.date.accessioned2019-01-30T12:32:27Z
dc.date.available2019-01-30T12:32:27Z
dc.date.issued2015
dc.description.abstractChlorophyll a concentration (Chl) product validation off theWestern Iberian coast is here undertaken by directly comparing remote sensing data with in situ surface reference values. Both standard and recently developed alternative algorithms are considered for match-up data analysis. The investigated standard products are those produced by the MERIS (algal 1 and algal 2) and MODIS (OC3M) algorithms. The alternative data products include those generatedwithin the CoastColour Project and Ocean Color Climate Change Initiative (OC-CCI) funded by ESA, as well as a neural net model trained with field measurements collected in the Atlantic off Portugal (MLPATLP). Statistical analyses showed that satellite Chl estimates tend to be larger than in situ reference values. The study also revealed that a non-uniform Chl distribution in the water column can be a concurring factor to the documented overestimation tendency when considering larger optical depth match-up stations. Among standard remote sensing products, MODIS OC3M and MERIS algal 2 yield the best agreement with in situ data. The performance of MLPATLP highlights the capability of regional solutions to further improve Chl retrieval by accounting for environmental specificities. Results also demonstrate the relevance of oceanographic regions such as the Nazaré area to evaluate how complex hydrodynamic conditions can influence the quality of Chl products.pt_PT
dc.description.sponsorshipThis studywas performed in the framework of HabSpot FCT Project, PTDC/MAR/100348/2008 and European Space Agency projects DUE CoastColour (ESRIN/AO/1-6141/09/l-EC) and Climate Change Iniciative — Ocean Color (AO-1/6207/09/I-LG). The work has been also partially supported by the European Space Agency within the framework of the MERIS Validation Activities under contract n. 12595/09/I-OL, and sampling activities benefited from European projects HERMES (GOCE-CT-2005-511234) and Hermione (EC contract 226354) support. We would like to thank NASA OBPG for the MODIS data and ESA Project AOPT-2423 for providing MERIS full resolution images. Ana C. Brito was funded by a Portuguese Post-doc grant from FCT (BPD/63017/2009) and by the Investigador FCT Program (IF/00331/2013). Davide D'Alimonte was funded by Investigador FCT Program (IF/00541/2013).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.rse.2015.07.018pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.1/12313
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationHotspot Ecosystem Research and Man's Impact on European seas
dc.relationTHE DEVELOPMENT OF AN INTEGRATED APPROACH FOR THE ASSESSMENT OF ECOLOGICAL QUALITY IN COASTAL AND TRANSITIONAL WATERS
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectChlorophyll apt_PT
dc.subjectOcean color remote sensingpt_PT
dc.subjectMERIS and MODIS sensorspt_PT
dc.subjectValidationpt_PT
dc.titleValidation of standard and alternative satellite ocean-color chlorophyll products off Western Iberiapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHotspot Ecosystem Research and Man's Impact on European seas
oaire.awardTitleTHE DEVELOPMENT OF AN INTEGRATED APPROACH FOR THE ASSESSMENT OF ECOLOGICAL QUALITY IN COASTAL AND TRANSITIONAL WATERS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F100348%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/226354/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F24245%2F2005/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F63017%2F2009/PT
oaire.citation.endPage419pt_PT
oaire.citation.startPage403pt_PT
oaire.citation.titleRemote Sensing of Environmentpt_PT
oaire.citation.volume168pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamFP7
oaire.fundingStreamSFRH
person.familyNameSá
person.familyNameD'Alimonte
person.givenNameCarolina
person.givenNameDavide
person.identifier.orcid0000-0001-8252-4593
person.identifier.orcid0000-0001-7217-7057
person.identifier.ridC-2268-2012
person.identifier.ridI-6531-2013
person.identifier.scopus-author-id26422511200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd644ae17-1d70-4875-a901-d6664061b8b3
relation.isAuthorOfPublication8820679e-dc95-4070-b68f-b7bc79e4aff7
relation.isAuthorOfPublication.latestForDiscoveryd644ae17-1d70-4875-a901-d6664061b8b3
relation.isProjectOfPublicationd7538874-a815-4cc0-a971-a11e1c81cd5f
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