Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/12244
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dc.date.accessioned2019-02-14T10:06:35Zen
dc.date.available2019-02-14T10:06:35Zen
dc.date.issued2019en
dc.identifier.urihttp://hdl.handle.net/2122/12244en
dc.description.abstractSince 2016, the Copernicus Marine Environment Monitoring Service (CMEMS) has produced and disseminated an ensemble of four global ocean reanalyses produced at eddy-permitting resolution for the period from 1993 to present, called GREP (Global ocean Reanalysis Ensemble Product). This dataset offers the possibility to investigate the potential benefits of a multi-system approach for ocean reanalyses, since the four reanalyses span by construction the same spatial and temporal scales. In particular, our investigations focus on the added value of the information on the ensemble spread, implicitly contained in the GREP ensemble, for temperature, salinity, and steric sea level studies. It is shown that in spite of the small ensemble size, the spread is capable of estimating the flow-dependent uncertainty in the ensemble mean, although proper re-scaling is needed to achieve reliability. The GREP members also exhibit larger consistency (smaller spread) than their predecessors, suggesting advancement with time of the reanalysis vintage. The uncertainty information is crucial for monitoring the climate of the ocean, even at regional level, as GREP shows consistency with CMEMS high-resolution regional products and complement the regional estimates with uncertainty estimates. Further applications of the spread include the monitoring of the impact of changes in ocean observing networks; the use of multi-model ensemble anomalies in hybrid ensemble-variational retrospective analysis systems, which outperform static covariances and represent a promising application of GREP. Overall, the spread information of the GREP product is found to significantly contribute to the crucial requirement of uncertainty estimates for climatic datasets.en
dc.description.sponsorshipData from the reanalyses presented in this work are available from the Copernicus Marine Environment Monitoring Service (CMEMS, http://marine.copernicus.eu/). Part of this work was supported by the EOS COST Action (“Evaluation of Ocean Synthesis”, http://eos-cost.eu/) through its Short Term Scientific Missions program. The full C-GLORS dataset is available at http://c-glors.cmcc.it. This work has received funding from the Copernicus Marine Environment Monitoring Service (CMEMS).en
dc.language.isoEnglishen
dc.relation.ispartofClimate Dynamicsen
dc.relation.ispartofseries1-2/53 (2019)en
dc.rightsCC0 1.0 Universalen
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/en
dc.titleThe added value of the multi-system spread information for ocean heat content and steric sea level investigations in the CMEMS GREP ensemble reanalysis producten
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber287-312en
dc.identifier.doi10.1007/s00382-018-4585-5en
dc.description.obiettivoSpecifico4A. Oceanografia e climaen
dc.description.journalTypeJCR Journalen
dc.contributor.authorStorto, Andreaen
dc.contributor.authorMasina, Simonaen
dc.contributor.authorSimoncelli, Simonaen
dc.contributor.authorIovino, Doroteaciroen
dc.contributor.authorCipollone, Andreaen
dc.contributor.authorDrevillon, Marieen
dc.contributor.authorDrillet, Yannen
dc.contributor.authorvon Schuckmann, Karinaen
dc.contributor.authorParent, Laurenten
dc.contributor.authorGarric, Gillesen
dc.contributor.authorGreiner, Ericen
dc.contributor.authorDesportes, Charlesen
dc.contributor.authorZuo, Haoen
dc.contributor.authorAlonso Balmaseda, Magdalenaen
dc.contributor.authorPeterson, Andrew K.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptCNR-Ismar-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.deptCMCC, Italy-
crisitem.author.orcid0000-0001-6273-7065-
crisitem.author.orcid0000-0003-1283-2798-
crisitem.author.orcid0000-0001-5132-7255-
crisitem.author.orcid0000-0001-9590-0922-
crisitem.author.orcid0000-0002-9922-8528-
crisitem.author.orcid0000-0002-5385-710X-
crisitem.author.orcid0000-0002-9611-8788-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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