{"id":22518,"date":"2025-12-10T10:32:30","date_gmt":"2025-12-10T10:32:30","guid":{"rendered":"https:\/\/www.mercator-ocean.eu\/?post_type=press-release&p=22518"},"modified":"2025-12-23T10:44:32","modified_gmt":"2025-12-23T10:44:32","slug":"mercator-ocean-international-rend-operationnelle-la-prevision-oceanique-optimisee-par-lia-avec-le-systeme-glonet-valide-par-oceanbench-au-salon-neurips-2025","status":"publish","type":"press-release","link":"https:\/\/www.mercator-ocean.eu\/fr\/press-release\/mercator-ocean-international-rend-operationnelle-la-prevision-oceanique-optimisee-par-lia-avec-le-systeme-glonet-valide-par-oceanbench-au-salon-neurips-2025\/","title":{"rendered":"Mercator\u00a0Ocean\u00a0rend la pr\u00e9vision oc\u00e9anique optimis\u00e9e par l’IA op\u00e9rationnelle avec le syst\u00e8me GLONET valid\u00e9 par\u00a0OceanBench\u00a0au salon\u00a0NeurIPS\u00a02025\u00a0"},"content":{"rendered":"\t\t
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OceanBench<\/span>\u00a0est le premier syst\u00e8me ouvert de benchmark scientifique pour mod\u00e8les oc\u00e9aniques bas\u00e9s sur l\u2019IA<\/span><\/span>\u00a0<\/span><\/em><\/strong><\/h5>

\u00a0<\/p>

SAN DIEGO et TOULOUSE, France – <\/span><\/span>\u00c0\u00a0<\/span>N<\/span>eurIPS<\/span>\u00a0<\/span>2025, l\u2019une des plus grandes conf\u00e9rences mondiales consacr\u00e9es \u00e0 l\u2019intelligence artificielle, Mercator\u00a0<\/span>O<\/span>cean<\/span>\u00a0<\/span>a pr\u00e9sent\u00e9\u00a0<\/span>OceanBench<\/span>, le premier benchmark scientifique ouvert d\u00e9di\u00e9 \u00e0 l\u2019\u00e9valuation de la qualit\u00e9 des mod\u00e8les de pr\u00e9vision oc\u00e9anique bas\u00e9s sur l\u2019IA. Cette annonce intervient quelques mois apr\u00e8s la publication de GLONET, le mod\u00e8le d\u2019IA d\u00e9velopp\u00e9 par Mercator\u00a0<\/span>O<\/span>cean<\/span>.<\/span><\/span>\u00a0<\/span>
<\/span>Ensemble,\u00a0<\/span>OceanBench<\/span>\u00a0et GLONET marquent une avanc\u00e9e majeure vers l\u2019int\u00e9gration de l\u2019intelligence artificielle dans la pr\u00e9vision oc\u00e9anique op\u00e9rationnelle, renfor\u00e7ant le r\u00f4le de l\u2019Europe dans la production de pr\u00e9visions fiables, rapides et fond\u00e9es sur la science \u00e0 l\u2019\u00e9chelle mondiale.<\/span><\/span>\u00a0<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Pr\u00e9sent\u00e9 \u00e0\u00a0NeurIPS\u00a0par Anass El\u00a0Aouni, oc\u00e9anographe et chercheur en machine\u00a0learning\u00a0(ML), et Quentin\u00a0Gaudel, architecte en syst\u00e8mes ML,\u00a0OceanBench\u00a0fournit un cadre d\u2019\u00e9valuation ouvert reposant sur les principes fondamentaux de la dynamique oc\u00e9anique. GLONET est le premier syst\u00e8me de pr\u00e9vision valid\u00e9 via\u00a0OceanBench\u00a0en vue d\u2019un usage op\u00e9rationnel.<\/span>\u00a0<\/span><\/p>

Anass El\u00a0Aouni<\/span><\/b>\u00a0: \u00ab\u00a0OceanBench\u00a0fournit un cadre transparent pour \u00e9valuer les pr\u00e9visions oc\u00e9aniques bas\u00e9es sur l\u2019IA. En comparant ces mod\u00e8les aux approches physiques, nous pouvons mettre en \u00e9vidence leurs points forts, identifier les marges de progression et orienter le d\u00e9veloppement d\u2019outils de pr\u00e9vision plus fiables. Il n\u2019existe pas de mod\u00e8le \u201cparfait\u201d, mais ce benchmark garantit des comparaisons \u00e9quitables et rigoureusement scientifiques, et aide les utilisateurs \u00e0 choisir la solution la plus adapt\u00e9e \u00e0 chaque application. \u00bb<\/span>\u00a0<\/span><\/p>

Quentin\u00a0Gaudel\u00a0<\/span><\/b>: \u00ab L’intelligence artificielle transforme la rapidit\u00e9 et l\u2019\u00e9chelle des pr\u00e9visions oc\u00e9aniques, mais pour l\u2019int\u00e9grer en confiance dans les op\u00e9rations, une validation rigoureuse est indispensable.\u00a0OceanBench\u00a0permet de mesurer les performances de fa\u00e7on pr\u00e9cise, tout en s\u2019assurant que les mod\u00e8les d\u2019IA respectent la dynamique physique de l’oc\u00e9an. Combin\u00e9e aux mod\u00e8les traditionnels, l\u2019IA acc\u00e9l\u00e8re les pr\u00e9visions et facilite l\u2019acc\u00e8s \u00e0 l’information. C\u2019est un atout cl\u00e9 pour soutenir la vision europ\u00e9enne du jumeau num\u00e9rique de l\u2019oc\u00e9an. \u00bb<\/span>\u00a0<\/span><\/p>

Une nouvelle norme pour la pr\u00e9vision oc\u00e9anique fond\u00e9e sur l\u2019IA<\/span><\/b>\u00a0<\/span><\/p>

Alors que l\u2019IA a d\u00e9j\u00e0 transform\u00e9 la pr\u00e9vision m\u00e9t\u00e9orologique, son usage en oc\u00e9anographie op\u00e9rationnelle restait limit\u00e9 en raison de l\u2019absence de standards partag\u00e9s pour la qualit\u00e9, la validation et la coh\u00e9rence physique.\u00a0OceanBench\u00a0comble cette lacune en offrant :<\/span>\u00a0<\/span><\/p>

– des donn\u00e9es ouvertes et des outils open source pour des \u00e9valuations reproductibles ;<\/span>\u00a0
– trois volets d\u2019\u00e9valuation : mod\u00e8le-vers-r\u00e9analyse, mod\u00e8le-vers-analyse, mod\u00e8le-vers-observations ;<\/span>\u00a0
– des diagnostics physiques garantissant que les pr\u00e9visions respectent la dynamique oc\u00e9anique.<\/span>\u00a0<\/span><\/p>

Le premier cycle de benchmark inclut quatre syst\u00e8mes : le mod\u00e8le haute r\u00e9solution bas\u00e9 sur la physique GLO12, et trois \u00e9mulateurs IA \u2014 GLONET,\u00a0XiHe\u00a0et\u00a0Wenhai.<\/span>\u00a0<\/span><\/p>

Les r\u00e9sultats montrent que les mod\u00e8les d\u2019IA fournissent des pr\u00e9visions rapides et pr\u00e9cises dans de nombreux contextes, tandis que les syst\u00e8mes physiques restent indispensables pour capturer les processus dynamiques \u00e0 grande \u00e9chelle et \u00e0 haute fr\u00e9quence. Une approche hybride appara\u00eet ainsi comme la solution la plus robuste pour la pr\u00e9vision op\u00e9rationnelle.<\/span>\u00a0<\/span><\/p>

GLONET : le nouveau syst\u00e8me mondial de pr\u00e9vision oc\u00e9anique par IA de Mercator\u00a0Ocean<\/span><\/b>\u00a0<\/span><\/p>

Publi\u00e9 en septembre 2025 et d\u00e9sormais enti\u00e8rement valid\u00e9 par\u00a0OceanBench, GLONET est pr\u00eat pour un d\u00e9ploiement op\u00e9rationnel. Ses caract\u00e9ristiques principales sont :<\/span>\u00a0<\/span><\/p>

–\u00a0des pr\u00e9visions mondiales quotidiennes \u00e0 10 jours, g\u00e9n\u00e9r\u00e9es en quelques secondes ;<\/span>\u00a0
<\/b>– des variables telles que la hauteur de mer, la temp\u00e9rature, la salinit\u00e9 et les courants sur 21 niveaux ;<\/span>\u00a0
– un entra\u00eenement bas\u00e9 sur la r\u00e9analyse GLORYS12, assurant une forte coh\u00e9rence physique.<\/span>\u00a0<\/span><\/p>

Marie\u00a0Drevillon, responsable des op\u00e9rations chez Mercator\u00a0Ocean\u00a0et co-auteure d\u2019OceanBench<\/span><\/b>, d\u00e9clare : \u00ab Gr\u00e2ce \u00e0 la validation d\u2019OceanBench, GLONET rejoint notre bo\u00eete \u00e0 outils de pr\u00e9vision op\u00e9rationnelle. Ces nouvelles capacit\u00e9s permettent des simulations plus rapides, un acc\u00e8s \u00e9largi \u00e0 l’information oc\u00e9anique et, un soutien renforc\u00e9 aux d\u00e9cisions. \u00bb<\/span>\u00a0<\/span><\/p>

Soutenir la vision europ\u00e9enne d\u2019un oc\u00e9an num\u00e9rique<\/span><\/b>\u00a0<\/span><\/p>

Le lancement d\u2019OceanBench\u00a0et le d\u00e9ploiement de GLONET constituent une avanc\u00e9e majeure vers la vision europ\u00e9enne du jumeau num\u00e9rique de l\u2019oc\u00e9an, visant \u00e0 fournir des pr\u00e9visions rapides et fiables pour mieux comprendre, g\u00e9rer et prot\u00e9ger l\u2019oc\u00e9an.<\/span>\u00a0<\/span><\/p>

En transition vers le statut d\u2019organisation intergouvernementale repr\u00e9sentant ses \u00c9tats membres, Mercator\u00a0Ocean\u00a0renforce durablement la capacit\u00e9 collective de l\u2019Europe \u00e0 concr\u00e9tiser cette ambition commune d\u2019un oc\u00e9an num\u00e9rique fiable et accessible \u00e0 tous.<\/span>\u00a0<\/span><\/p>

\u00a0<\/p>

\u00a0<\/p>

\u00c0 propos d\u2019OceanBench\u00a0V1.0\u00a0<\/span><\/b>\u00a0<\/span><\/p>

OceanBench: A Benchmark for Data-Driven Global\u00a0Ocean\u00a0Forecasting\u00a0Systems, publi\u00e9 et pr\u00e9sent\u00e9 \u00e0\u00a0NeurIPS\u00a02025.\u00a0Auteurs : Anass El\u00a0Aouni, Quentin\u00a0Gaudel, Juan Emmanuel Johnson, Charly Regnier, Julien Le Sommer, Simon van\u00a0Gennip, Ronan\u00a0Fablet, Marie\u00a0Drevillon, Yann\u00a0Drillet\u00a0et Pierre-Yves Le\u00a0Traon.\u00a0<\/span>\u00a0<\/span><\/p>

D\u00e9velopp\u00e9 par Mercator\u00a0Ocean\u00a0International en collaboration avec :\u00a0Programme Prioritaire de Recherche Oc\u00e9an & Climat,\u00a0IMT Atlantique,\u00a0Universit\u00e9 Grenoble Alpes,\u00a0IGEO \u2013 Institute de\u00a0Geociencias.<\/span>\u00a0<\/span><\/p>

\u00a0<\/span><\/p>

A propos de Mercator Ocean\u00a0<\/strong>
Mercator\u00a0Ocean\u00a0International est un leader mondial de l\u2019oc\u00e9anographie num\u00e9rique, fournissant des analyses, pr\u00e9visions et donn\u00e9es oc\u00e9aniques fiables pour faire progresser la science, guider les politiques publiques et r\u00e9pondre aux besoins soci\u00e9taux. Mercator\u00a0Ocean\u00a0International op\u00e8re le service\u00a0Copernicus\u00a0Marine pour le compte de l\u2019Union europ\u00e9enne et\u00a0co-d\u00e9veloppe\u00a0le Jumeau Num\u00e9rique Europ\u00e9en de l\u2019Oc\u00e9an avec ses partenaires. 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