Abstract. The M2 MIOST24 (Multivariate Inversion of Ocean Surface Topography 2024) internal tide atlases are available in annual (MIOST24a) and monthly (MIOST24m) regional versions for modes 1 2 the Indo-Philippine archipelago region off Amazon shelf. They derived from 25 years (1993–2017, period 1) sea level anomalies (SLA) altimetry observations. Compared to MIOST22, incorporates wavelengths based on stratification profiles GLORYS12v1 (1993–2020). differences between MIOST24a MIOST22a lead...

This study presents MIOST 2024 (MIOST24), a new global atlas of the sea surface height (SSH) signature coherent internal tides derived from single time inversion 28-year (1993-2020) along-tracks altimetry dataset. The using conjugate gradient algorithm, simultaneously resolves contributions and mesoscale eddy variability, unlike other methods which rely on separate estimates. Compared to 2022 version (MIOST22) by Ubelmann et al., 2022, MIOST24 is based mode 1 2 wavelengths calculated...

Abstract. The Amazon shelf break is a key region for internal tide (IT) generation. It also shows large seasonal variation in circulation and associated stratification. This study, based on high-resolution model (1/36∘) explicitly forced by tide, aims to better characterize how the ITs vary between two contrasted seasons. During season from March July (MAMJJ) currents mesoscale eddies are weak while pycnocline shallower stronger. From August December (ASOND) mean strong, deeper weaker than...

Abstract. The forthcoming SWOT altimetric missions aim to resolve the mesoscale with an unprecedented spatial resolution and swath. However, high-frequency processes, such as tides, are undersampled in time aliased onto lower frequencies, so they need be corrected properly. Unlike barotropic internal tides (ITs) not completely stationary have significant temporal variability due their interactions ocean circulation stratification variability. Stratification changes impact both generation...

Abstract Storm surges events are investigated using the ECHAR method, which identifies and quantifies different dynamical structures of a typical storm surge event. In North Atlantic, analysis 65 tide gauges revealed that display two major minor structures, each them corresponding to specific ocean dynamics. The refer slow‐time Gaussian structure, lasting around 24 days, associated with impact atmospheric pressure fast‐time Laplace 1.4 mainly wind‐driven. absence structure along America...

Abstract This study proposes new insights for the interpretation of GEOVIDE particle measurements. Potential resuspension sites due to internal tides (ITs) have been identified along western Iberian shelf slope using a tidal regional model. is mainly source lithogenic material whereas Galicia Bank biogenic matter. The potential pathways particles from toward stations are IBIRYS reanalysis infer their transport by ocean circulation. It appears that each station influenced specific pathway and...

Abstract. The Amazon shelf break is a key region for internal tides (IT) generation. also shows large seasonal variation of circulation and associated stratification. objective this study to document how these variations will impact IT generation propagation properties. A high-resolution regional model (1/36° horizontal resolution), explicitly resolving analyzed investigate their interactions with the background stratification, over two seasons: first MAMJJ (March July), weaker mesoscale...

Storm surges events are investigated using the ECHAR method, which identify and quantify different dynamical structures of a typical storm surge event. In North Atlantic, analysis 65 tide gauges revealed that display 2 majors minors structures, each them corresponding to specific ocean dynamics. The major refer slow-time Gaussian structure, lasting around 24 days, associated with impact atmospheric pressure fast-time Laplace 1.4 mainly wind-driven. absence structure along America coasts is...

In the attempt to look back on our practices and plan their evolution, a debate has been conducted in lab share different perceptions about “slow-science” concept. This surprisingly gathered more curiosity than expected all profiles of scientists were represented from BSc, PhD students engineers emeritus researchers. Suggestions have made for future that would increase quality scientific results knowledge as well better working conditions while reducing green gas...

The current ecological crisis requires changes in our way to make science order reduce the footprint of scientific research activities. This is particularly crucial for setting a good example rest society. Here we present process engaged by an oceanography laboratory its environmental footprint. Using tool developed French collective Labos 1point5, calculated carbon separated activities (missions, consumables, buildings, campaigns at sea, etc.). exercise allows us first all quantify...

Abstract. Thanks to the autonomous Argo floats of OUTPACE cruise and THOT project, some features intermediate flow dynamics, around 1000 m depth, within Southwest Central Pacific Ocean (156° E–150° W, 19° S) are described. In Coral sea, we highlight minima in dissolved oxygen 140 μmol kg−1 that associated with signature a southward transport waters between two zonal jets: from North Vanuatu Jet Caledonia Jet. This takes place core cyclonic eddy or via path an anticyclonic one, highlighting...

Abstract. Thanks to the autonomous Argo floats of OUTPACE cruise (Oligotrophy UlTra-oligotrophy PACific Experiment) and THOT (TaHitian Ocean Time series) project, some features intermediate-flow dynamics, at around 1000 m depth, within central western South Pacific (around 19∘ S, 156∘ E–150∘ W) are described. In Coral Sea, we highlight minima in dissolved oxygen 140 µmol kg−1 that associated with signature a southward transport waters between two zonal jets: from North Vanuatu Jet Caledonia...

Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Oceans. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Internal tides responsible lithogenic inputs along Iberian continental slopeAuthorsSimonBarbotiDMarionLagardeFlorent...

Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Oceans. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]Internal tides responsible lithogenic inputs along Iberian continental slopeAuthorsSimonBarbotiDMarionLagardeFlorent...

Abstract. The forthcoming SWOT altimetric mission aims to access the smaller mesoscale oceanic circulation with an unprecedented spatial resolution and swath. repetitivity of orbit implies that high frequency processes, such as internal tides (ITs), are under-sampled in time their full temporal evolution is not observed. They therefore aliased onto lower frequencies possibly mixed into signals. As barotropic tides, ITs must be corrected from observations order mesoscales. But unlike...