Spatial and Seasonal Variability of Mixed Layer Depth in the Tropical Atlantic at 10 °W using 40 Years of Observation Data

Type Article
Date 2021
Language English
Other localization https://www.europeanjournalofscientificresearch.com/issues/PDF/EJSR_158_3_06.pdf
Author(s) Kouame Kanga Désiré1, Kouassi Aka Marcel1, Trokourey Albert2, Toualy Elisée3, N’guessan Benjamin K.1, 2, Brehmer Patrice4, Ostrowski Marek5
Affiliation(s) 1 : Centre de Recherches Océanologiques (CRO), 29 Rue des Pêcheurs Treichville BPV 18 Abidjan, Côte d’Ivoire
2 : Université Felix Houphouët-Boigny, Laboratoire de Chimie Physique UFR SSMT, 22 BP 582 Abidjan 22, Côte d’Ivoire
3 : Laboratoire de Physique de l'Atmosphère et de Mécanique des Fluides (LAPA-MF) UFR SSMT, 22 BP 582 Abidjan 22, Côte d’Ivoire
4 : IRD, Univ Brest, CNRS, Ifremer, Lemar Délégation Régionale IRD Ouest Plouzané, France
5 : Institute of Marine Research (IMR) Nordnesgaten 50 Bergen, Norway
Source European Journal of Scientific Research / Revue Européenne de la recherche Scientifique (1450-216X / 1450-202) (FRDN Incorporated), 2021 , Vol. 158 , N. 3 , P. 207-217
Keyword(s) Atlantic Ocean, Gulf of Guinea, Mixed Layer, Spatial Variability, Seasonal Variability.
Abstract

The spatial and seasonal variability of the mixed layer depth (MLD) was studied using hydrological data from several databases collected over the period October 1973 to March 2017 at 10 °W between latitudes 2 °N and 10 °S in the Gulf of Guinea. The density threshold method with 0.03 kg m-3 criterion was used to calculate the MLD. In the equatorial band, the seasonal average MLD is 20 m whatever the season. At 6 °S and 10 °S, the MLD is relatively higher during the cold season. The MLD varies between 21 and 37 m at 6 °S, and the seasonal averages MLD are 21 and 40 m respectively during the hot and cold seasons. At 10 °S, during the hot season, the MLD varies between 28 and 52 m and the seasonal average is 39.5 m. During the cold season, the MLD varies between 45 and 55 m with a seasonal average of 49 m.

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Kouame Kanga Désiré, Kouassi Aka Marcel, Trokourey Albert, Toualy Elisée, N’guessan Benjamin K., Brehmer Patrice, Ostrowski Marek (2021). Spatial and Seasonal Variability of Mixed Layer Depth in the Tropical Atlantic at 10 °W using 40 Years of Observation Data. European Journal of Scientific Research / Revue Européenne de la recherche Scientifique, 158(3), 207-217. Open Access version : https://archimer.ifremer.fr/doc/00684/79619/