Variability of Coastal circulation in the Gulf of Guinea using altimetry data

Kouacou BOSSON (Felix Houphouet-Boigny University, Cote d'Ivoire/ LOCEAN/IPSL Université Pierre et Marie Curie, France, Côte d’Ivoire)

CoAuthors

SAbine ARNAULT (LOCEAN/IPSL Université Pierre et Marie Curie, France); Aman ANGORA (Felix Houphouet-Boigny University, Cote d'Ivoire, Côte d'Ivoire); Elisée TOUALY (Felix Houphouet-Boigny University, Cote d'Ivoire, Cote d'Ivoire)

Event: 2019 Ocean Surface Topography Science Team Meeting

Session: Coastal Altimetry

Presentation type: Type Poster

The Gulf of Guinea (GG) in the Tropical Atlantic Ocean is characterized by a strong seasonal variability of oceanic surface conditions. The open ocean surface circulation is predominantly zonal with the presence of the South Equatorial Current (SEC) flowing westward. Along the northern coast, an intense eastward coastal current is observed: the Guinea Current. Due to the paucity of in situ measurements, the time and space variability of this surface circulation in the GG remains poorly documented. The link between this variability and other oceanic phenomena (such as upwelling) has also not been clearly established, as well as its impact on the West African Monsoon. The aim of this study is to provide a synoptic view of the seasonal and interannual variability of this surface circulation in the GG and to highlight the different connections with other oceanic and atmospheric features if any. The approach is mainly based on altimetry data using either gridded multi-satellite products or coastal along-track products available over the period 1993-2015. In situ measurements such as Acoustic Doppler Current Profiler measurements obtained during oceanographic campaigns (Equalant 1999, Equalant 2000, EGEE2, PIRATA 2012 and PIRATA 2014), satellite Sea Surface Temperature (SST) information, and tide gauge data complete our data sets.
 
Variability of Coastal circulation in the Gulf of Guinea using altimetry data

Poster show times:

Room Start Date End Date
The Gallery Tue, Oct 22 2019,16:15 Tue, Oct 22 2019,18:00
The Gallery Thu, Oct 24 2019,14:00 Thu, Oct 24 2019,15:45
Kouacou BOSSON
Felix Houphouet-Boigny University, Cote d'Ivoire/ LOCEAN/IPSL Université Pierre et Marie Curie, France
Côte d’Ivoire
bossonmarcel@yahoo.fr