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                  <gco:CharacterString>[OLD TEMPLATE] Produits altimétriques côtiers X-TRACK L2P le long de la trace - hauteurs - Régional (23 zones)</gco:CharacterString>
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                        <gmd:LocalisedCharacterString locale="#FR">[OLD TEMPLATE] Produits altimétriques côtiers X-TRACK L2P le long de la trace - hauteurs - Régional (23 zones)</gmd:LocalisedCharacterString>
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                        <gmd:LocalisedCharacterString locale="#EN">[OLD TEMPLATE] X-TRACK L2P : SEA LEVEL ANOMALIES DEDICATED TO COASTAL APPLICATIONS - Regional (23 areas)</gmd:LocalisedCharacterString>
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            <gco:CharacterString>Produit de hauteurs de mer destiné à l’étude de 23 régions côtières, avec des données le long de la trace projetées sur la trace de référence avec un intervalle d'environ 6-7 km entre les points (1 seconde). Concerne les missions Topex/Jason-1/Jason-2/Jason-3 (+ orbites intercalées pour Topex, Jason-1, Jason-2), ERS-1, ERS2, Envisat, SARAL/AltiKa, Geosat Follow On, HaiYang-2A and Sentinel-3A.
Les séries temporelles des anomalies du niveau de la mer ont été calculées avec le système de traitement X-TRACK (développé au CTOH/LEGOS) mais, à la différence de la précédente version du jeu de données X-TRACK, ce jeu de données X-TRACK L2P est calculé à partir des produits Level 2 Plus (L2P) distribués par le CDS-SAT-AVISO. Le produit X-TRACK L2P est également plus complet puisqu'en plus des anomalies de hauteur de mer, il contient la hauteur significative des vagues et le coefficient de rétrodiffusion. Les corrections altimétriques appliquées sont également fournies dans ce produit.</gco:CharacterString>
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                  <gmd:LocalisedCharacterString locale="#FR">Produit de hauteurs de mer destiné à l’étude de 23 régions côtières, avec des données le long de la trace projetées sur la trace de référence avec un intervalle d'environ 6-7 km entre les points (1 seconde). Concerne les missions Topex/Jason-1/Jason-2/Jason-3 (+ orbites intercalées pour Topex, Jason-1, Jason-2), ERS-1, ERS2, Envisat, SARAL/AltiKa, Geosat Follow On, HaiYang-2A and Sentinel-3A.
Les séries temporelles des anomalies du niveau de la mer ont été calculées avec le système de traitement X-TRACK (développé au CTOH/LEGOS) mais, à la différence de la précédente version du jeu de données X-TRACK, ce jeu de données X-TRACK L2P est calculé à partir des produits Level 2 Plus (L2P) distribués par le CDS-SAT-AVISO. Le produit X-TRACK L2P est également plus complet puisqu'en plus des anomalies de hauteur de mer, il contient la hauteur significative des vagues et le coefficient de rétrodiffusion. Les corrections altimétriques appliquées sont également fournies dans ce produit.</gmd:LocalisedCharacterString>
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                  <gmd:LocalisedCharacterString locale="#EN">The CTOH computes and distributes specific, coastal along-track sea level anomalies (SLA) using its X-TRACK processor over 23 regions, for all precise altimeter missions : Topex/Jason-1/Jason-2/Jason-3 (+ Interleaved orbits for Topex, Jason-1, Jason-2), ERS-1, ERS2, Envisat, SARAL/AltiKa, Geosat Follow On, HaiYang-2A and Sentinel-3A.
The Sea Level Anomaly time series have been computed with the X-TRACK processing system (developed at CTOH/LEGOS) but, unlike the previous version of the X-TRACK dataset, this X-TRACK L2P dataset is computed from the Level 2 Plus (L2P) products distributed by CDS-SAT-AVISO. The X-TRACK L2P product is also more complete since in addition to the sea surface height anomalies, it contains the significant wave height and the backscatter coefficient. The applied altimetry corrections are also provided in this product.</gmd:LocalisedCharacterString>
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                           <gmd:textGroup>
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                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2024-07-26</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
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                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
                              <gmx:Anchor xlink:href="https://sextant.ifremer.fr/geonetwork/srv/api/registries/vocabularies/local.theme.cersat_sensor">geonetwork.thesaurus.local.theme.cersat_sensor</gmx:Anchor>
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         </gmd:descriptiveKeywords>
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            <gmd:MD_Keywords>
               <gmd:keyword gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
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                  <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_KeywordTypeCode"
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                     <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Agreed Parameter Groups (P03)</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Agreed Parameter Groups (P03)</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
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                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2021-04-07</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
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                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
                              <gmx:Anchor xlink:href="https://sextant.ifremer.fr/geonetwork/srv/api/registries/vocabularies/external.parameter.NVS.P03">geonetwork.thesaurus.external.parameter.NVS.P03</gmx:Anchor>
                           </gmd:code>
                        </gmd:MD_Identifier>
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                  </gmd:CI_Citation>
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            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString>Topographie de la surface de la mer</gco:CharacterString>
                  <gmd:PT_FreeText>
                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#FR">Topographie de la surface de la mer</gmd:LocalisedCharacterString>
                     </gmd:textGroup>
                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#EN">Sea Surface Topography</gmd:LocalisedCharacterString>
                     </gmd:textGroup>
                  </gmd:PT_FreeText>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_KeywordTypeCode"
                                          codeListValue="theme"/>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Cersat - Parameter</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Cersat - Parameter</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2024-07-26</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
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                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
                              <gmx:Anchor xlink:href="https://sextant.ifremer.fr/geonetwork/srv/api/registries/vocabularies/local.theme.cersat_parameter">geonetwork.thesaurus.local.theme.cersat_parameter</gmx:Anchor>
                           </gmd:code>
                        </gmd:MD_Identifier>
                     </gmd:identifier>
                  </gmd:CI_Citation>
               </gmd:thesaurusName>
            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString/>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_KeywordTypeCode"
                                          codeListValue="theme"/>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Cersat - GCMD parameter</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Cersat - GCMD parameter</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
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                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2024-01-04</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
                     </gmd:date>
                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
                              <gmx:Anchor xlink:href="https://sextant.ifremer.fr/geonetwork/srv/api/registries/vocabularies/external.theme.GCMDparameter">geonetwork.thesaurus.external.theme.GCMDparameter</gmx:Anchor>
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                        </gmd:MD_Identifier>
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            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword gco:nilReason="missing" xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString/>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_KeywordTypeCode"
                                          codeListValue="theme"/>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Cersat - Format</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Cersat - Format</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2024-07-26</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
                     </gmd:date>
                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
                              <gmx:Anchor xlink:href="https://sextant.ifremer.fr/geonetwork/srv/api/registries/vocabularies/local.theme.cersat_format">geonetwork.thesaurus.local.theme.cersat_format</gmx:Anchor>
                           </gmd:code>
                        </gmd:MD_Identifier>
                     </gmd:identifier>
                  </gmd:CI_Citation>
               </gmd:thesaurusName>
            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString>SNO-CTOH</gco:CharacterString>
                  <gmd:PT_FreeText>
                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#FR">SNO-CTOH</gmd:LocalisedCharacterString>
                     </gmd:textGroup>
                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#EN">SNO-CTOH</gmd:LocalisedCharacterString>
                     </gmd:textGroup>
                  </gmd:PT_FreeText>
               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_KeywordTypeCode"
                                          codeListValue="theme"/>
               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Services Nationaux d'Observation</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Services Nationaux d'Observation</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2024-07-26</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
                           </gmd:dateType>
                        </gmd:CI_Date>
                     </gmd:date>
                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
                              <gmx:Anchor xlink:href="https://sextant.ifremer.fr/geonetwork/srv/api/registries/vocabularies/local.theme.SNO">geonetwork.thesaurus.local.theme.SNO</gmx:Anchor>
                           </gmd:code>
                        </gmd:MD_Identifier>
                     </gmd:identifier>
                  </gmd:CI_Citation>
               </gmd:thesaurusName>
            </gmd:MD_Keywords>
         </gmd:descriptiveKeywords>
         <gmd:descriptiveKeywords>
            <gmd:MD_Keywords>
               <gmd:keyword xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString>Hauteur de la surface de la mer</gco:CharacterString>
                  <gmd:PT_FreeText>
                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#FR">Hauteur de la surface de la mer</gmd:LocalisedCharacterString>
                     </gmd:textGroup>
                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#EN">Sea surface height</gmd:LocalisedCharacterString>
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               </gmd:keyword>
               <gmd:type>
                  <gmd:MD_KeywordTypeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_KeywordTypeCode"
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               </gmd:type>
               <gmd:thesaurusName>
                  <gmd:CI_Citation>
                     <gmd:title xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>ODATIS aggregation parameters and Essential Variable names</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">ODATIS aggregation parameters and Essential Variable names</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:title>
                     <gmd:date>
                        <gmd:CI_Date>
                           <gmd:date>
                              <gco:Date>2024-06-13</gco:Date>
                           </gmd:date>
                           <gmd:dateType>
                              <gmd:CI_DateTypeCode codeList="http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#CI_DateTypeCode"
                                                   codeListValue="publication">publication</gmd:CI_DateTypeCode>
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                     <gmd:identifier>
                        <gmd:MD_Identifier>
                           <gmd:code>
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                           </gmd:code>
                        </gmd:MD_Identifier>
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                  <gmx:Anchor xlink:href="https://www.aviso.altimetry.fr/fileadmin/documents/data/License_Aviso.pdf">Licence ouverte</gmx:Anchor>
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                        <gmd:LocalisedCharacterString locale="#FR">Licence ouverte</gmd:LocalisedCharacterString>
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                  <gmd:MD_RestrictionCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_RestrictionCode"
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                  <gmd:MD_RestrictionCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_RestrictionCode"
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               <gmd:otherConstraints xsi:type="gmd:PT_FreeText_PropertyType">
                  <gco:CharacterString>Vous devez créditer le jeu de données avec la mention suivante : "Ces produits ont été développés et validés par CTOH/LEGOS France. Les publications doivent inclure la déclaration suivante dans les remerciements : “Altimetry data used in this study (DOI 10.24400/527896/a01-2022.020) were developed, validated by the CTOH/LEGOS, France and distributed by CDS-SAT-AVISO”.</gco:CharacterString>
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                        <gmd:LocalisedCharacterString locale="#FR">Vous devez créditer le jeu de données avec la mention suivante : "Ces produits ont été développés et validés par CTOH/LEGOS France. Les publications doivent inclure la déclaration suivante dans les remerciements : “Altimetry data used in this study (DOI 10.24400/527896/a01-2022.020) were developed, validated by the CTOH/LEGOS, France and distributed by CDS-SAT-AVISO”.</gmd:LocalisedCharacterString>
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                     <gmd:textGroup>
                        <gmd:LocalisedCharacterString locale="#EN">You must give appropriate credits and acknowledgments : "These products were developed and validated by CTOH/LEGOS France. Publications should include the following statement in the Acknowledgments: “Altimetry data used in this study (DOI 10.24400/527896/a01-2022.020) were developed, validated by the CTOH/LEGOS, France and distributed by CDS-SAT-AVISO”.</gmd:LocalisedCharacterString>
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                     <gmd:eastBoundLongitude>
                        <gco:Decimal>180.00</gco:Decimal>
                     </gmd:eastBoundLongitude>
                     <gmd:southBoundLatitude>
                        <gco:Decimal>-85.00</gco:Decimal>
                     </gmd:southBoundLatitude>
                     <gmd:northBoundLatitude>
                        <gco:Decimal>85.00</gco:Decimal>
                     </gmd:northBoundLatitude>
                  </gmd:EX_GeographicBoundingBox>
               </gmd:geographicElement>
               <gmd:temporalElement>
                  <gmd:EX_TemporalExtent>
                     <gmd:extent>
                        <gml:TimePeriod gml:id="d9114130e583a1051934">
                           <gml:beginPosition>1993-03-01</gml:beginPosition>
                           <gml:endPosition>2022-03-01</gml:endPosition>
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               <gmd:name>
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               <gmd:version gco:nilReason="unknown">
                  <gco:CharacterString/>
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            <gmd:MD_DigitalTransferOptions>
               <gmd:onLine>
                  <gmd:CI_OnlineResource>
                     <gmd:linkage xsi:type="gmd:PT_FreeText_PropertyType">
                        <gmd:URL>https://www.aviso.altimetry.fr/en/data/products/sea-surface-height-products/regional/x-track-sla/x-track-l2p-sla-version-2022.html</gmd:URL>
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                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">https://www.aviso.altimetry.fr/en/data/products/sea-surface-height-products/regional/x-track-sla/x-track-l2p-sla-version-2022.html</gmd:LocalisedCharacterString>
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                        <gco:CharacterString>WWW:LINK</gco:CharacterString>
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                        <gco:CharacterString>Plus d'information sur AVISO+</gco:CharacterString>
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                     <gmd:description xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Plus d'information sur AVISO+</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Plus d'information sur AVISO+</gmd:LocalisedCharacterString>
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                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#EN">Further information on AVISO+</gmd:LocalisedCharacterString>
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               </gmd:onLine>
               <gmd:onLine>
                  <gmd:CI_OnlineResource>
                     <gmd:linkage xsi:type="gmd:PT_FreeText_PropertyType">
                        <gmd:URL>ftp://ftp-access.aviso.altimetry.fr/regional-xtrack-coastal/version_xtrack_l2p_2022</gmd:URL>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">ftp://ftp-access.aviso.altimetry.fr/regional-xtrack-coastal/version_xtrack_l2p_2022</gmd:LocalisedCharacterString>
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                     <gmd:protocol>
                        <gco:CharacterString>WWW:LINK</gco:CharacterString>
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                     <gmd:name>
                        <gco:CharacterString>Accès authentifié aux données via FTP</gco:CharacterString>
                     </gmd:name>
                     <gmd:description xsi:type="gmd:PT_FreeText_PropertyType">
                        <gco:CharacterString>Accès authentifié aux données via FTP</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Accès authentifié aux données via FTP</gmd:LocalisedCharacterString>
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                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#EN">Authenticated access on FTP</gmd:LocalisedCharacterString>
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                  </gmd:CI_OnlineResource>
               </gmd:onLine>
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− L’utilisation de nouveaux algorithmes de correction de la mesure pour éliminer ou réduire les effets dus à la présence du continent sur la mesure et les corrections, avec notamment, une procédure de sélection, de reconstruction et de lissage de corrections. Cette procédure consiste à définir un « critère d'editing » (i.e. l’ensemble de valeurs min et/ou max qui garantissent l’élimination de la plupart des mesures aberrantes) plus restrictif que le critère standard. Dans un second temps, une procédure statistique de contrôle qualité permet l’élimination de données aberrantes résiduelles. En parallèle, une méthode de reconstruction/lissage de corrections défaillantes par polynômes de Bézier est réalisée. 
Cette approche permet de récupérer un nombre significatif de mesures altimétriques proches des côtes. 
L'apport par rapport aux traitements standards est: 
− Une diminution du taux de mesures erronées,
− Une augmentation de la couverture en zone côtière.

Birol, F., N. Fuller, F. Lyard, M. Cancet, F. Niño, C. Delebecque, S. Fleury, et al. 2016. “Coastal Applications from Nadir Altimetry: Example of the X-TRACK Regional Products.” Advances in Space Research, November. doi:10.1016/j.asr.2016.11.005.</gco:CharacterString>
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                        <gmd:LocalisedCharacterString locale="#FR">Cet outil est basé sur: 
− L’utilisation de nouveaux algorithmes de correction de la mesure pour éliminer ou réduire les effets dus à la présence du continent sur la mesure et les corrections, avec notamment, une procédure de sélection, de reconstruction et de lissage de corrections. Cette procédure consiste à définir un « critère d'editing » (i.e. l’ensemble de valeurs min et/ou max qui garantissent l’élimination de la plupart des mesures aberrantes) plus restrictif que le critère standard. Dans un second temps, une procédure statistique de contrôle qualité permet l’élimination de données aberrantes résiduelles. En parallèle, une méthode de reconstruction/lissage de corrections défaillantes par polynômes de Bézier est réalisée. 
Cette approche permet de récupérer un nombre significatif de mesures altimétriques proches des côtes. 
L'apport par rapport aux traitements standards est: 
− Une diminution du taux de mesures erronées,
− Une augmentation de la couverture en zone côtière.

Birol, F., N. Fuller, F. Lyard, M. Cancet, F. Niño, C. Delebecque, S. Fleury, et al. 2016. “Coastal Applications from Nadir Altimetry: Example of the X-TRACK Regional Products.” Advances in Space Research, November. doi:10.1016/j.asr.2016.11.005.</gmd:LocalisedCharacterString>
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                        <gmd:LocalisedCharacterString locale="#EN">This tool is based on: 
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This approach allows to recover a significant number of altimetric measurements close to the coast. 
The contribution compared to standard treatments is: 
- A decrease in the rate of erroneous measurements,
- An increase of the coverage in coastal areas.

Birol, F., N. Fuller, F. Lyard, M. Cancet, F. Niño, C. Delebecque, S. Fleury, et al. 2016. “Coastal Applications from Nadir Altimetry: Example of the X-TRACK Regional Products.” Advances in Space Research, November. doi:10.1016/j.asr.2016.11.005</gmd:LocalisedCharacterString>
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