Florent Lyard
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View article: ODYSEA: a satellite mission to advance knowledge of ocean dynamics and air-sea interaction
ODYSEA: a satellite mission to advance knowledge of ocean dynamics and air-sea interaction Open
Ocean-surface vector winds, currents, and their interaction play critical roles in shaping many aspects of the Earth’s environment (e.g., weather, climate, marine ecosystems, and ocean health), affecting human safety and wellbeing bo…
View article: Internal tides off the Amazon shelf in the western tropical Atlantic: analysis of SWOT Cal/Val mission data
Internal tides off the Amazon shelf in the western tropical Atlantic: analysis of SWOT Cal/Val mission data Open
This study focuses on the internal tides (ITs) off the Amazon shelf in the tropical Atlantic. It is based on 2 km horizontally gridded observations along the swaths of SWOT (Surface Water and Ocean Topography) track 20 during the calibrati…
View article: Regional modeling of internal-tide dynamics around New Caledonia. Part 2: Tidal incoherence and implications for sea surface height observability
Regional modeling of internal-tide dynamics around New Caledonia. Part 2: Tidal incoherence and implications for sea surface height observability Open
New Caledonia, in the southwestern tropical Pacific, has recently been identified as a hot spot for energetic semidiurnal internal tides. In a companion paper, the life cycle of coherent internal tides, characterized by fixed amplitude and…
View article: Internal tides off the Amazon shelf in the western tropical Atlantic: Analysis of SWOT Cal/Val Mission Data
Internal tides off the Amazon shelf in the western tropical Atlantic: Analysis of SWOT Cal/Val Mission Data Open
The Surface Water and Ocean Topography (SWOT) altimetry mission launched at the end of 2022 is an opportunity to access ocean variability at scales down to 15–30 km and to better understand high-frequency dynamic processes such as the inte…
View article: What can we learn on internal tides with the 1-day phase of SWOT ?
What can we learn on internal tides with the 1-day phase of SWOT ? Open
The Surface Water and Ocean Topography (SWOT) altimetry mission launched in 2022 makes 2D observations of sea surface height (SSH) using SAR radar interferometric techniques. Compared to previous altimetry missions, SWOT extends SSH …
View article: Regional modeling of internal-tide dynamics around New Caledonia – Part 1: Coherent internal-tide characteristics and sea surface height signature
Regional modeling of internal-tide dynamics around New Caledonia – Part 1: Coherent internal-tide characteristics and sea surface height signature Open
The southwestern tropical Pacific exhibits a complex bathymetry and represents a hot spot of internal-tide generation. Based on a tailored high-resolution regional model, we investigate for the first time the internal-tide field around the…
View article: Comment on egusphere-2023-361
Comment on egusphere-2023-361 Open
Abstract. The Southwestern Tropical Pacific exhibits a complex bathymetry and represents a hot spot of internal tide generation. Based on a tailored high-resolution regional model, we investigate for the first time the int…
View article: Comment on egusphere-2023-361
Comment on egusphere-2023-361 Open
Abstract. The Southwestern Tropical Pacific exhibits a complex bathymetry and represents a hot spot of internal tide generation. Based on a tailored high-resolution regional model, we investigate for the first time the int…
View article: Regional modeling of internal tide dynamics around New Caledonia: energetics and sea surface height signature
Regional modeling of internal tide dynamics around New Caledonia: energetics and sea surface height signature Open
The Southwestern Tropical Pacific exhibits a complex bathymetry and represents a hot spot of internal tide generation. Based on a tailored high-resolution regional model, we investigate for the first time the internal tide field around the…
View article: The new FES2022 tidal atlas.
The new FES2022 tidal atlas. Open
Thanks to its current accuracy and maturity, altimetry is considered as a fully operational observing system dedicated to various applications such as climate studies. Altimeter measurements are corrected from several ge…
View article: A satellite mission concept to unravel small-scale ocean dynamics and air-sea interactions: ODYSEA (Ocean Dynamics and Surface Exchange with the Atmosphere)
A satellite mission concept to unravel small-scale ocean dynamics and air-sea interactions: ODYSEA (Ocean Dynamics and Surface Exchange with the Atmosphere) Open
Ocean surface currents are critical not only to ocean dynamics, but also to marine ecosystems, maritime navigation and safety, search and rescue, monitoring and mitigation of marine pollution including oil spills, plastic, and debris. Wind…
View article: Internal tides off the Amazon shelf during two contrasted seasons: interactions with background circulation and SSH imprints
Internal tides off the Amazon shelf during two contrasted seasons: interactions with background circulation and SSH imprints Open
The Amazon shelf break is a key region for internal tide (IT) generation. It also shows a large seasonal variation in circulation and associated stratification. This study, based on a high-resolution model (1/36∘) explicitly forced by tide…
View article: Internal Tides Responsible for Lithogenic Inputs Along the Iberian Continental Slope
Internal Tides Responsible for Lithogenic Inputs Along the Iberian Continental Slope Open
This study proposes new insights for the interpretation of GEOVIDE particle measurements. Potential resuspension sites due to internal tides (ITs) have been identified along the western Iberian shelf slope using a tidal regional model. Ibe…
View article: Internal tides responsible for lithogenic inputs along the Iberian continental slope
Internal tides responsible for lithogenic inputs along the Iberian continental slope Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Oceans. ESSOAr is a venue for early communication or feedback before peer review. Data may be prelimin…
View article: Simultaneous estimation of ocean mesoscale and coherent internal tide sea surface height signatures from the global altimetry record
Simultaneous estimation of ocean mesoscale and coherent internal tide sea surface height signatures from the global altimetry record Open
This study proposes an approach to estimate the ocean sea surface height signature of coherent internal tides from a 25-year along-track altimetry record, with a single inversion over time, resolving both internal tide contributions and me…
View article: Comment on os-2021-114
Comment on os-2021-114 Open
Abstract. The Amazon shelf break is a key region for internal tide (IT) generation. It also shows a large seasonal variation in circulation and associated stratification. This study, based on a high-resolution model (
View article: Internal tides off the Amazon shelf during two contrasted seasons: Interactions with background circulation and SSH imprints
Internal tides off the Amazon shelf during two contrasted seasons: Interactions with background circulation and SSH imprints Open
The Amazon shelf break is a key region for internal tides (IT) generation. The region also shows a large seasonal variation of circulation and associated stratification. The objective of this study is to document how these variations will …
View article: Background stratification impacts on internal tide generation and abyssal propagation in the western equatorial Atlantic and the Bay of Biscay
Background stratification impacts on internal tide generation and abyssal propagation in the western equatorial Atlantic and the Bay of Biscay Open
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 and aliased onto lower frequencies, so the…
View article: Comment on os-2021-80
Comment on os-2021-80 Open
Abstract. This study proposes an approach to estimate the ocean sea surface height signature of coherent internal tides from a 25-year along-track altimetry record, with a single inversion over time, resolving both interna…
View article: Comment on os-2021-80
Comment on os-2021-80 Open
Abstract. This study proposes an approach to estimate the ocean sea surface height signature of coherent internal tides from a 25-year along-track altimetry record, with a single inversion over time, resolving both interna…
View article: Simultaneous estimation of Ocean mesoscale and coherent internal tide Sea Surface Height signatures from the global Altimetry record
Simultaneous estimation of Ocean mesoscale and coherent internal tide Sea Surface Height signatures from the global Altimetry record Open
This study proposes an approach to estimate the Ocean Sea Surface Height signature of coherent internal tidesfrom 25 years of along-track altimetry record, with a single inversion over time, resolving both internal tide contributions andme…
View article: Internal tides responsible for lithogenic inputs along the Iberian continental slope
Internal tides responsible for lithogenic inputs along the Iberian continental slope Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Oceans. ESSOAr is a venue for early communication or feedback before peer review. Data may be prelimin…
View article: FES2014 global ocean tide atlas: design and performance
FES2014 global ocean tide atlas: design and performance Open
Since the mid-1990s, a series of FES (finite element solution) global ocean tidal atlases has been produced and released with the primary objective to provide altimetry missions with tidal de-aliasing correction at the best possible accura…
View article: TIDE IN GIRONDE ESTUARY
TIDE IN GIRONDE ESTUARY Open
The study investigates the dynamics of the Gironde estuary in order to improve the tidal wave deformation modelling in a constrained environment. The need has been highlighted by statistics over high and low tides and surges, upstream of F…
View article: MARÉE DANS L'ESTUAIRE DE LA GIRONDE
MARÉE DANS L'ESTUAIRE DE LA GIRONDE Open
International audience
View article: Comment on os-2021-19
Comment on os-2021-19 Open
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 and aliased ont…
View article: The dependency of internal tides on background stratification variability: a case study on the Amazon shelf and the Bay of Biscay
The dependency of internal tides on background stratification variability: a case study on the Amazon shelf and the Bay of Biscay Open
The forthcoming SWOT altimetric mission aims to access the smaller mesoscale oceanic circulation with an unprecedented spatial resolution and swath. The repetitivity of the mission orbit implies that high frequency processes, such as the i…
View article: Implementation of the barotropic tide in oceanic circulation models. Current tests with the NEMO model 
Implementation of the barotropic tide in oceanic circulation models. Current tests with the NEMO model  Open
<p>This study proposes a new methodology for implementing the barotropic tide in an ocean general circulation model (OGCM). The assumptions underlying this methodology are that the best barotropic tide solutions are computed by speci…
View article: Accuracy assessment of global internal-tide models using satellite altimetry
Accuracy assessment of global internal-tide models using satellite altimetry Open
Altimeter measurements are corrected for several geophysical parameters in order to access ocean signals of interest, like mesoscale or sub-mesoscale variability. The ocean tide is one of the most critical corrections due to the amplitude …
View article: FES2014 global ocean tides atlas: design and performances
FES2014 global ocean tides atlas: design and performances Open
Since the mid-1990’s, a series of Finite Element Solution (FES) global ocean tidal atlases has been produced and released with the primary objective to provide altimetry missions with tidal de-aliasing correction at the best possible accur…