Yves Morel
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View article: Spatio-temporal variability of flooded areas in the Ouémé floodplain (Benin, West Africa) from 2015 to 2023
Spatio-temporal variability of flooded areas in the Ouémé floodplain (Benin, West Africa) from 2015 to 2023 Open
International audience
View article: Mixing of tracers in stratified sheared flows     
Mixing of tracers in stratified sheared flows      Open
Understanding small-scale turbulent mixing in the ocean is fundamental for accurately modeling oceanic processes, predicting currents, and managing marine ecosystems. Global and regional ocean models rely on parameterizing turbulent mixing…
View article: Primary adrenal insufficiency in children excluding congenital adrenal hyperplasia: insights from 33-year single-center experience in Tunisia
Primary adrenal insufficiency in children excluding congenital adrenal hyperplasia: insights from 33-year single-center experience in Tunisia Open
Allgrove syndrome was the most common etiology of non-CAH PAI in our study, followed by X-linked adrenoleukodystrophy. Today, advanced molecular analysis can be useful for diagnostic investigations, especially in patients with no specific …
View article: The International Master’s Program in Oceanography and Applications in Benin
The International Master’s Program in Oceanography and Applications in Benin Open
The state and dynamics of the oceans and seas that surround Africa are changing at an increasing pace due to anthropogenic pressures. The livelihoods of many Africans depend on fishing and ocean-driven monsoon rains, and some African coas…
View article: Mesoscale dynamics and its interaction with coastal upwelling in the northern Gulf of Guinea
Mesoscale dynamics and its interaction with coastal upwelling in the northern Gulf of Guinea Open
Mesoscale dynamics is essential to understanding the physical and biological processes of the coastal ocean regions due to its ability to modulate water properties. However, on the shelf, interactions between eddies, coastal currents, and …
View article: Tidal Impacts on Zooplankton Dynamics in a Major Ocean-Lagoon Channel: Insights from a 25-Hour Intensive Survey in the Cotonou Channel, Benin
Tidal Impacts on Zooplankton Dynamics in a Major Ocean-Lagoon Channel: Insights from a 25-Hour Intensive Survey in the Cotonou Channel, Benin Open
This study investigates the effects of tidal cycles on the zooplankton community within the Cotonou Channel, an important waterway connecting the large Nokoué Lagoon to the Atlantic Ocean in Benin. From the determination of zooplankton com…
View article: Imprint of Mesoscale Eddies on Air-Sea Interaction in the Tropical Atlantic Ocean
Imprint of Mesoscale Eddies on Air-Sea Interaction in the Tropical Atlantic Ocean Open
This study investigates the effect of mesoscale eddies on air–sea heat and fresh water exchange in the tropical Atlantic Ocean (TAO) using 8 years of satellite altimetry data, combined with sea surface temperature (SST), latent and sensibl…
View article: Subsurface Eddy Detection Optimized with Potential Vorticity from Models in the Arabian Sea
Subsurface Eddy Detection Optimized with Potential Vorticity from Models in the Arabian Sea Open
Coherent ocean vortices, or eddies, are usually tracked on the surface of the ocean. However, tracking subsurface eddies is important for a complete understanding of deep ocean circulation. In this study, we develop an algorithm designed f…
View article: What are the role of mesoscale eddies in air-sea interaction and in sea surface salinity variability in the Tropical Atlantic Ocean?
What are the role of mesoscale eddies in air-sea interaction and in sea surface salinity variability in the Tropical Atlantic Ocean? Open
The ocean kinetic energy is dominated by mesoscale eddies, which are quasi-circular structures with typical horizontal scales of 10 to 100 km and vertical extension of hundreds meters. the mesoscale eddies play significant roles in the tra…
View article: Mesoscale dynamics off the Congo River in the Gulf of Guinea and its impact on the exchange of waters between coastal and open ocean.
Mesoscale dynamics off the Congo River in the Gulf of Guinea and its impact on the exchange of waters between coastal and open ocean. Open
The aim of this study is to characterize and quantify the mesoscale dynamics off the Congo River in the Gulf of Guinea and evaluate its impact on the exchange of fresh and salty waters between the coastal and open ocean in this area. The s…
View article: Mesoscale dynamics and its influence on coastal upwelling in the northern Gulf of Guinea
Mesoscale dynamics and its influence on coastal upwelling in the northern Gulf of Guinea Open
Very little is known on mesoscale dynamics in the northern Gulf of Guinea, off West Africa. The purpose of our work is to quantify these mesoscale eddies dynamics in this region (0°N-7°N, 10°W-10°E) and their impact on …
View article: Loss of LGR4/GPR48 causes severe neonatal salt wasting due to disrupted WNT signaling altering adrenal zonation
Loss of LGR4/GPR48 causes severe neonatal salt wasting due to disrupted WNT signaling altering adrenal zonation Open
Disorders of isolated mineralocorticoid deficiency, which cause potentially life-threatening salt-wasting crisis early in life, have been associated with gene variants of aldosterone biosynthesis or resistance; however, in some patients no…
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: Influence of the Gulf of Guinea Islands on the Atlantic Equatorial Undercurrent Circulation
Influence of the Gulf of Guinea Islands on the Atlantic Equatorial Undercurrent Circulation Open
In the easternmost portion of the Gulf of Guinea, Bioko Island marks the beginning of an island chain that stretches NE–SW to the Equator, where São Tomé Island sits in the path of the Equatorial Undercurrent (EUC). In this study, we explo…
View article: Genotype, Mortality, Morbidity, and Outcomes of 3β-Hydroxysteroid Dehydrogenase Deficiency in Algeria
Genotype, Mortality, Morbidity, and Outcomes of 3β-Hydroxysteroid Dehydrogenase Deficiency in Algeria Open
Background 3β-hydroxysteroid dehydrogenase 2 (3βHSD2) deficiency is a rare form of congenital adrenal hyperplasia (CAH), with fewer than 200 cases reported in the world literature and few data on outcomes. Patients and Methods We report a …
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 (1/36â) explicitly fo…
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: What Can We Learn From Observed Temperature and Salinity Isopycnal Anomalies at Eddy Generation Sites? Application in the Tropical Atlantic Ocean
What Can We Learn From Observed Temperature and Salinity Isopycnal Anomalies at Eddy Generation Sites? Application in the Tropical Atlantic Ocean Open
Based on 18 years of satellite altimetry data and temperature/salinity ( θ/S ) profiles from Argo floats, we analyze the isopycnal θ/S anomalies ( θ'/S' ) within newborn eddies in the tropical Atlantic Ocean (TAO). Our results show that on…
View article: From seasonal flood pulse to seiche: Multi-frequency waterlevel fluctuations in a large shallow tropical lagoon (Nokoué Lagoon, Benin)
From seasonal flood pulse to seiche: Multi-frequency waterlevel fluctuations in a large shallow tropical lagoon (Nokoué Lagoon, Benin) Open
This study investigated the main water-level (WL) variability modes of Nokoué Lagoon in Benin (West-Africa). The average WL ranges between 1.3 and 2.3 m between the low-and high-water seasons. Seasonal as well as weak interannual variation…