Influence of Climatic and Oceanographic Parameters on CO2 Exchanges at the Air-sea Interface in the Gulf of Guinea
Faty Patricia Raissa Yavo *
Centre Universitaire de Recherche et d’Application en Télédétection, University Felix Houphouet-Boigny, Abidjan, 22 BP 801 Abidjan 22, Ivory Coast.
Jacques André Tiemele
Centre Universitaire de Recherche et d’Application en Télédétection, University Felix Houphouet-Boigny, Abidjan, 22 BP 801 Abidjan 22, Ivory Coast.
Kouakou Urbain Koffi
Department of Sciences and Technologies, Ecole Normale Supérieure, University Felix Houphouet Boigny, Abidjan, Ivory Coast.
Eric Valère Djagoua
Centre Universitaire de Recherche et d’Application en Télédétection, University Felix Houphouet-Boigny, Abidjan, 22 BP 801 Abidjan 22, Ivory Coast.
Abe Delfin Ochou
Laboratoire des Sciences de la Matière, de l'Environnement et de l'Energie Solaire, University Felix Houphouet Boigny, Abidjan, Ivory Coast.
*Author to whom correspondence should be addressed.
Abstract
Aims: Analyze the climatic and oceanographic parameters influencing oceanic CO2.
Place and Duration of Study: Gulf of Guinea, 2010-2018
Methodology: Analysis of Monthly Satellite Data from the Gulf of Guinea on Sea Surface Temperature, Sea Surface Salinity, Sea Surface Chlorophyll, Sea Surface Partial Pressure of CO2, Sea Surface Wind Speed at 10 meters, Dry Air Molar Fraction (xCO2), and Sea Level Pressure. Numerical Data Processing on a One-Degree Spatial Resolution Grid Using Python 3.11 through Bilinear Interpolation. The data are then averaged monthly, allowing for an assessment of the intra-monthly variability of oceanic parameters.
Results: Physical parameters (salinity, temperature, wind speed), hydrological parameters (chlorophyll-a and ocean surface partial pressure of CO2) are characterized by strong seasonal and spatial variability, modulated by phenomena such as seasonal upwelling and thermal stratification, which directly influence CO2 fluxes at the air-sea interface, with minor differences between coastal areas and offshore regions.
Conclusion: Climatic and oceanographic parameters act synergistically to modulate CO2 exchanges between the ocean and the atmosphere. Integrating these parameters into climate models will improve the accuracy of global climate change predictions.
Keywords: Oceanographic parameters, Gulf of Guinea, python, CO2