The acoustic tomography approach provides an indirect measure of the temperature of an ocean volume. The technique provides an integrated measure of temperature along the sound propagation paths. The variety of paths between a transmitter and a receiver, as well as the large number of instruments deliver information on the variability of the thermal content of the insonified volume.

A world deep displacement dataset, named ANDRO, after a traditional dance of Brittany meaning a swirl, comprising more than 1300 000 deep displacements, has been produced from the Argo float trajectory data ('traj' files). ANDRO dataset was completed over the period 2000-2009, then was partially but yearly updated since 2010. For detailed information and status of the last released ANDRO product, please visit the dedicated Argo France web page: https://www.umr-lops.fr/SNO-Argo/Products/ANDRO-Argo-floats-displacements-Atlas One important feature of ANDRO is that the pressures measured during float drifts at depth, and suitably averaged are preserved in ANDRO. To reach this goal, it was necessary to reprocess most of the Argo raw data, because of the many different decoding versions (roughly 100) not always applied by the DACs to the displacement data because they were mainly interested in the p,t,S profiles. The result of our work was the production of comprehensive files, named DEP (for 'déplacement' in French), containing all the possibly retrievable float data.

Raw seismic reflection data archived at SISMER, acquired: - by oceanographic vessels and national equipment managed by the French Oceanographic Fleet (FOF) - by foreign oceanographic vessels in collaboration with Ifremer - by Ifremer's historic vessels (Jean Charcot, Nadir, Suroit) operated before the FOF was set up

The RAFOS float technique (the reverse acronym of SOund Fixing And Ranging) is used to obtain sub-surface trajectories of floats by acoustic location. These floats are immersed at a constant depth and drift with the body of water in which they are immersed. The floats record the arrival time of the sound signals emitted by a network of fixed acoustic sources placed on moorings. They regularly come to the surface to transmit the data that they have recorded.

La Flotte océanographique française regroupe une panoplie de navires de recherche, d'engins sous-marins et d'équipements mobiles, lui donnant accès à tous les océans et mers du globe, hors zone polaire : - quatre navires hauturiers (Marion Dufresne, Pourquoi pas ?, L'Atalante, Thalassa) capables de réaliser des campagnes océanographiques sur tous les océans (hors zones polaires) ; - deux navires semi-hauturiers (Antea et Alis) réalisant des missions océanographiques de physique, chimie, halieutique, d'exploration de la colonne d'eau et de cartographie sous-marine. Ces navires opèrent en Méditérannée, dans l'océan Indien et Tropical atlantique, dans le Pacifique Sud-ouest et en Outre-mer ; - cinq navires côtiers (L'Europe, Thalia, Côtes de la Manche, Tethys II et Haliotis) utilisés en Manche-Atlantique et en Méditerranée pour des campagnes scientifiques nombreuses et variées avec une capacité à assurer un continuum de moyens entre le littoral et le hauturier ; - sept navires de station, pouvant des sorties de la journée à trois jours, pour les plus récents, répartis sur les façades maritimes métropolitaines : Antedon II (Marseille), Sepia II (Wimereux), Nereis (Port-Vendres), Neomysis (Roscoff), Albert Lucas (Brest), Planula IV (Arcachon), Sagitta III (Nice). On peut connaître leur position en temps réel sur le site de la Flotte océanographique française. Un service de visualisation web WMS est également disponible.

The In Situ Analysis System (ISAS) has been developed to produce temperature and salinity fields that preserve as far as possible the time and space sampling capabilities of the Argo float network. Since the first global analysis in 2009, the system has been extended to take into account all types of vertical profiles and time series, as well as new parameters such as dissolved oxygen produced by BGC Argo. ISAS gridded fields are based entirely on in situ measurements. The system aims to monitor the evolution of ocean properties as a function of time for climatological studies, and to enable easy calculation of climate indices. Delayed-time processing of the 2002-2020 dataset has been carried out using ISAS-V8 and the updating of a priori statistics. Note that ISAS-V8 has been implemented as an operational analysis tool at the Coriolis data center since June 2020.

Localisation of marine geological and biological samples, stored in the biology and geology ocean database managed by IFREMER (BIGOOD, BIology and GeOlogy Ocean Database).

Raw siescan sonar data archived at SISMER, acquired: - by oceanographic vessels and national equipment managed by the French Oceanographic Fleet (FOF) - by foreign oceanographic vessels in collaboration with Ifremer - by Ifremer's historic vessels (Jean Charcot, Nadir, Suroit) operated before the FOF was set up

Raw underway marine magnetic data collected : - by french oceanographic vessels and national equipment managed by the French Oceanographic Fleet (FOF) - by foreign oceanographic vessels in collaboration with Ifremer - by Ifremer's historic vessels (Jean Charcot, Nadir, Suroit) operated before the FOF was set up

Validated and aggregated data from current profilers measured continuously by hull-mounted ADCPs (Acoustic Doppler Current Profiler).