Joël Amouin
Research Subjects
Joël Amouin has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Kouassi Yves Kouadio
Laboratory of Matter, Environmental and Solar Energy Sciences (LASMES), Ocean–Atmosphere Interaction Group, University Félix Houphouët-Boigny, Abidjan 22 BP 582, Côte d’Ivoire
1 shared publication - Modeste Kacou
Université Félix Houphouët-Boigny, Abidjan, Côte d’Ivoire
1 shared publication - Sandrine Djakouré
Laboratory of Matter, Environmental and Solar Energy Sciences (LASMES), Ocean–Atmosphere Interaction Group, University Félix Houphouët-Boigny, Abidjan 22 BP 582, Côte d’Ivoire
1 shared publication
Latest Publications
- Open Access
- 31 August 2023
- Published by MDPI AG in Preprints.org
Mesoscale Convective Systems and Extreme Precipitation on the West African Coast Linked to Ocean-Atmosphere Conditions during the Monsoon Period in the Gulf of Guinea
This study investigates the importance of convective systems for extreme rainfall along the northern coast of the Gulf of Guinea (GG) and their relationship with atmospheric and oceanic conditions. Convective system data (MCSs), daily precipitation, sea surface temperature (SST) and moisture flux anomalies are used from June to September 2007-2016. The results show that 2/3 of MCSs crossing Abidjan are produced in June, which is the core of the major rainy season. Likewise, 2/3 of MCSs originate from continental areas, while 1/3 comes from the ocean. Oceanic MCSs are mostly initiated close to the coast, which also corresponds to the Marine Heat Waves region. Continental MCSs are mostly initiated inland. The results also highlight the moisture flux contribution of three zones which have an impact on the onset and the sustaining of MCSs: (i) the seasonal migration of ITCZ, (ii) the GG across the northern coastline, (iii) and finally the continent. These contributions of moisture fluxes coincide with oceanic warming off the Northeast Brazil and the northern coast of the GG both two days before and the day of extreme rainfall events. The ocean contributes to moisten the atmosphere, and therefore to supply and sustain the MCSs during their lifecycle.
- 31 August 2023
- Published by MDPI AG in Preprints.org
Open AccessMesoscale Convective Systems and Extreme Precipitation on the West African Coast Linked to Ocean-Atmosphere Conditions during the Monsoon Period in the Gulf of Guinea
This study investigates the importance of convective systems for extreme rainfall along the northern coast of the Gulf of Guinea (GG) and their relationship with atmospheric and oceanic conditions. Convective system data (MCSs), daily precipitation, sea surface temperature (SST) and moisture flux anomalies are used from June to September 2007-2016. The results show that 2/3 of MCSs crossing Abidjan are produced in June, which is the core of the major rainy season. Likewise, 2/3 of MCSs originate from continental areas, while 1/3 comes from the ocean. Oceanic MCSs are mostly initiated close to the coast, which also corresponds to the Marine Heat Waves region. Continental MCSs are mostly initiated inland. The results also highlight the moisture flux contribution of three zones which have an impact on the onset and the sustaining of MCSs: (i) the seasonal migration of ITCZ, (ii) the GG across the northern coastline, (iii) and finally the continent. These contributions of moisture fluxes coincide with oceanic warming off the Northeast Brazil and the northern coast of the GG both two days before and the day of extreme rainfall events. The ocean contributes to moisten the atmosphere, and therefore to supply and sustain the MCSs during their lifecycle.