Retour de la Campagne Refuge Arctic

Dans le cadre de l’ERC-WAAXT, Michel Hamon, Hugo Sellet, Antoine Villefer et Peter Sutherland du LOPS Ifremer ont embarqué avec 50 scientifiques de laboratoires différents à bord du NGCC Amundsen, brise-glace canadien.

Entretien avec Anne-Marie Treguier

Changements irréversibles sur nos océans : entretien avec l'océanographe Anne-Marie Tréguier

Un entretien de Krystel Veillard pour France 3 Bretagne diffusé le 10 octobre 2024

Retour de la campagne CROSSROAD

La campagne CROSSROAD 2024 s'est déroulée sur le N/O Thalassa du 2 août au 28 août 2024 (embarquement et débarquement à St John's) au large de Terre-Neuve avec à son bord une douzaine d'agent ODE/LOPS et des collaborateurs étrangers (Université de Hambourg, University College London).

Les vagues et le système terre: école de printemps à Cargèse

Le groupe de recherche sur les vagues et leurs interactions se réunit à Cargèse pour une école de printemps. Cette année on peut noter le rôle déterminant des nouvelles méthodes d'observation, en particulier le satellite SWOT, les mini-bouées autonomes ou les techniques de mesure à partir d'imagerie vidéo.

Damien Desbruyères : médaille de bronze du CNRS

Launch of the SWOT satellite

The "Surface Water Ocean Topography" space mission is the result of a long collaboration between NASA and CNES. Many LOPS researchers and engineers have contributed to define the performance of the revolutionary KaRIN instrument that will allow to measure the sea level with much more details. The launch went off without a hitch at 12:46 on December 16, 2022

Camille Lique reçoit le prix Christian Le Provost 2021

Camille Lique reçoit le prix Christian Le Provost 2021 à l'Académie des Sciences: https://www.academie-sciences.fr/fr/Laureats/laureate-2021-du-prix-christian-le-provost-camille-lique.html

C'est à la minute 41:20 de la re-transmission: https://www.youtube.com/watch?v=zUP0TiEe-3g

Le changement climatique dans l'océan profond raconté par Virginie Thierry

Lancement de l'initiative One Ocean Science, où des scientifiques du monde entier expliquent pourquoi les sciences océaniques comptent. Virginie Thierry y parle notamment de l'observation de l'océan profond.

Applying machine learning methods to ocean patterns and ocean regimes indicators

The global challenges that humankind is called to face highlight the need for establishing innovative algorithms and technologies to enable the transition from data to knowledge, and foster the consolidation of a science-informed decision-making process. 

For a successful implementation of this value chain, the development of science-based algorithms clearly represents a crucial phase. We will analyse the latest updates on the application of machine learning methods to ocean patterns and the ocean regimes indicators in the context of Blue-Cloud.

From ocean waves to the stratosphere with infrasound: Marine De Carlo PhD work

Using infrasound for the detection of explosions, sounding the stratosphere or measuring ocean waves first requires a better understanding of how waves make infrasound. Marine De Carlo took up that challenge less than 3 years ago. Viva is broadcast live (in French) ar 4PM,15/12/2020 on
https://youtu.be/ETxwSZFZsC0

Global ocean freshening, ocean mass increase and global mean sea level rise over 2005–2015

Global mean sea level rise is an important indicator and direct consequence of global warming. This rise has increased continuously since the early 20th century, due to two factors: (1) thermal expansion of ocean waters as they have warmed and (2) the addition of an increasing amount of freshwater from ice sheets, glaciers and rivers (i.e. increased “ocean mass“). Various ‘direct’ measurements of sea level rise have become possible during the last ~30 years (the satellite era), however methods that measure ocean mass are the least certain and reveal disagreements when combined. In this study, we investigated the global ocean salt budget as an alternative approach for estimating changes in ocean mass. In other words, we used the observed ‘freshening’ of t he global oceans to infer the mass change that must have occurred in order to produce it. The global network of Argo floats provides an unprecedented global record of salinity and temperature measurements for the upper 2000 meters of the oceans. We used all available Argo data – combined with high quality hydrographic measurements from World Ocean Circulation Experiment (WOCE) hydrographic program and the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) – to estimate an ocean mass trend for 2005-2015 of 1.30 ± 1.13 mm per year. This trend has been corrected to exclude melt from floating sea ice, which does not affect sea level. Adding in measurements of salinity changes in the deep ocean (>2000m depth) increases our estimate of ocean mass trend for 2005-2015 to 1.55 ± 1.20 mm per year. Our new ocean mass trends are smaller than some previous direct estimates, though not statistically different given the large uncertainties involved. More investigations are needed to reduce these uncertainties. Specifically, the Argo network of salinity and temperature measurements are not equally distributed around the globe, and the current generation of Argo floats do not operate below 2000m depth. New hydrographic missions and observing systems are needed to continuously sample the temperature and salinity changes for the deep ocean, the high latitude regions and some coastal areas.

Futur satellite SKIM: bientôt la sélection

L'Agence Spatiale Européenne annoncera en septembre la sélection pour le 9ème Earth Explorer: SKIM ou FORUM. Toutes les études sur SKIM, et en particulier l'analyse de la campagne DRIFT4SKIM sont en cours de finalisation.

Swells from SWOT

At very high resolution the sea level follows swells radiating from extreme storms. It turns out that SWOT is the most accurate source of data for waves longer than 500 m

Caroline Le Bihan : Mon rôle de Technicienne Océanographe

Caroline Le Bihan : “Mon rôle de technicienne, c’est d’assurer l’acquisition et la qualité des données.”

New understanding of altimeter data: doughnuts and humps

Satellite altimeters have been monitoring the oceans routinely since the launch of ERS-1, in 1991. A new study by Marine De Carlo and Fabrice Ardhuin reveals that we misunderstood the small scale variations in measurements of sea level and wave height . This has implications for our knowledge of wave heights in extreme storms, and small scale variations in sea level.

Chaires de Professeur Junior CNRS

Pour postuler, cliquer sur le lien
https://emploi.cnrs.fr/Offres/CPJ/CPJ-2024-036/Default.aspx

Prix 2023 de l'Académie des Sciences

Fabrice Ardhuin a reçu le "prix des sciences de la mer - Ifremer" et Damien Desbruyères a reçu le "prix Christian Le Provost"

HARMONY

HARMONY has been selected by the European Space Agency as its 10th Earth Explorer mission: it will involve 2 satellite companions to Sentinel 1, observing ice, land and oceans with radar an optical imagery, for a launch planned in 2029.

Le rapport d'évaluation du HCERES sur le LOPS est paru

Le LOPS porte un savoir-faire exceptionnel sur l'océanographie, à la fois en matière de méthodes (observations, outils numériques, etc.) et de savoirs fondamentaux.

Alex Ayet récompensé du prix André Prudhomme 2021

La glace de mer tourne et révèle des tourbillons cachés

The H2020 project JERICO-S3 successful for funding at the EC level

The series of EU-funded JERICO projects is about to start a third edition with the JERICO-S3 project. It follows JERICO-FP7 (2011-2014) and JERICO-NEXT (2015-2019). JERICO stands for Joint European Research Infrastructure of Coastal Observatories. The RI is coordinated by Ifremer since its start in 2011 and aims at improving collaboration and harmonisation between coastal observatories in Europe. After 8 years of project, its objective is to build a pan European sustainable Research Infrastructure: the JERICO-RI.

Sea State CCI version 1.0

LOPS leads the production of the new reference dataset for the study of ocean wave climate with version 1.0 of the ESA Sea State Climate Change Initiative, allowing unprecedented studies of ocean waves across the global ocean

Préparation de BicWin 2019: en campagne dans le blizzard ...

Comprendre l'effet des vagues sur la glace de mer: c'est l'objectif du projet ERC WAAXT et de cette première campagne de préparation ...