Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9517
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dc.contributor.authorallFarina, R.; CNR, ICAR, Inst High Performance Comput & Networking, I-80131 Naples, Italyen
dc.contributor.authorallDobricic, S.; Ctr Euromediterraneo Cambiamenti Climat, Bologna, Italyen
dc.contributor.authorallStorto, A.; Ctr Euromediterraneo Cambiamenti Climat, Bologna, Italyen
dc.contributor.authorallMasina, S.; Ctr Euromediterraneo Cambiamenti Climat, Bologna, Italyen
dc.contributor.authorallCuomo, S.; Univ Naples Federico II, Dept Math & Applicat, I-80126 Naples, Italyen
dc.date.accessioned2015-04-16T08:46:45Zen
dc.date.available2015-04-16T08:46:45Zen
dc.date.issued2015-03en
dc.identifier.urihttp://hdl.handle.net/2122/9517en
dc.description.abstractWe propose an improvement of an oceanographic three dimensional variational assimilation scheme (3D-VAR), named OceanVar, by introducing a recursive filter (RF) with the third order of accuracy (3rd-RF), instead of an RFwith first order of accuracy (1st-RF), to approximate horizontal Gaussian covariances. An advantage of the proposed scheme is that the CPU's time can be substantially reduced with benefits on the large scale applications. Experiments estimating the impact of 3rd-RF are performed by assimilating oceanographic data in two realistic oceanographic applications. The results evince benefits in terms of assimilation process computational time, accuracy of the Gaussian correlation modeling, and show that the 3rd-RF is a suitable tool for operational data assimilation.en
dc.description.sponsorshipThe research leading to these results has received funding from the Italian Ministry of Education, University and Research and the Italian Ministry of Environment, Land and Sea under the GEMINA and Next Data projects. We also thank the researchers Ardelio Galletti and Livia Marcellino of the University of Naples "Parthenope", Department of Science and Technology, Italy, for useful discussions. Finally we specially thank the anonymous referees for the work improvement.en
dc.language.isoEnglishen
dc.publisher.nameElsevier Inc NY Journalsen
dc.relation.ispartofJournal of computational physicsen
dc.relation.ispartofseries/284(2015)en
dc.relation.isversionofhttp://www.sciencedirect.com/science/article/pii/S0021999115000042en
dc.subjectVARIATIONAL ASSIMILATIONen
dc.subjectOBJECTIVE ANALYSISen
dc.subjectBACKGROUND ERRORen
dc.subjectMODELen
dc.subjectEQUATIONen
dc.subjectFILTERSen
dc.subjectIMPACTen
dc.subjectOCEANen
dc.titleA Revised Scheme to Compute Horizontal Covariances in an Oceanographic 3D-VAR Assimilation System.en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber631-647en
dc.subject.INGV03. Hydrosphere::03.01. General::03.01.04. Ocean data assimilation and reanalysisen
dc.identifier.doi10.1016/j.jcp.2015.01.003en
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dc.description.obiettivoSpecifico4A. Clima e Oceanien
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.relation.issn0021-9991en
dc.relation.eissn1090-2716en
dc.contributor.authorFarina, R.en
dc.contributor.authorDobricic, S.en
dc.contributor.authorStorto, A.en
dc.contributor.authorMasina, S.en
dc.contributor.authorCuomo, S.en
dc.contributor.departmentCNR, ICAR, Inst High Performance Comput & Networking, I-80131 Naples, Italyen
dc.contributor.departmentCtr Euromediterraneo Cambiamenti Climat, Bologna, Italyen
dc.contributor.departmentCtr Euromediterraneo Cambiamenti Climat, Bologna, Italyen
dc.contributor.departmentCtr Euromediterraneo Cambiamenti Climat, Bologna, Italyen
dc.contributor.departmentUniv Naples Federico II, Dept Math & Applicat, I-80126 Naples, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptCNR, ICAR, Inst High Performance Comput & Networking, I-80131 Naples, Italy-
crisitem.author.deptCNR-Ismar-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.deptUniv Naples Federico II, Dept Math & Applicat, I-80126 Naples, Italy-
crisitem.author.orcid0000-0001-6273-7065-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent03. Hydrosphere-
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