African Monsoon Multidisciplinary Analysis

African Monsoon Multidisciplinary Analysis
Name	African Monsoon Multidisciplinary Analysis
Abbreviation	AMMA
Established	2002
Region	West Africa, Sahel, Gulf of Guinea
Disciplines	Atmospheric science; Hydrology; Oceanography; Agriculture; Public health

African Monsoon Multidisciplinary Analysis The African Monsoon Multidisciplinary Analysis was a coordinated international research program focused on the dynamics and impacts of the West African monsoon system. It brought together researchers from major institutions to integrate observations, modeling, and socio-economic studies across the Sahel, Gulf of Guinea, and adjacent Atlantic regions. The program engaged national meteorological services, research councils, and international agencies to inform weather prediction, seasonal forecasting, and climate impacts.

Overview

The program convened experts from organizations such as the World Meteorological Organization, National Aeronautics and Space Administration, Centre National de la Recherche Scientifique, University of Oxford, Imperial College London, University of Reading, University of Oxford's Environmental Change Institute, École Normale Supérieure, Institut de Recherche pour le Développement, Max Planck Society, National Centre for Atmospheric Research, European Centre for Medium-Range Weather Forecasts, Met Office, French National Centre for Scientific Research, African Union Commission, United Nations Development Programme, United States Agency for International Development, Bill & Melinda Gates Foundation, World Bank, and regional meteorological services. It linked long-standing observational programs such as the Global Atmosphere Watch, Tropical Rainfall Measuring Mission, and Argo (oceanography). Collaborations extended to universities including Université Cheikh Anta Diop, University of Lagos, University of Ghana, Cairo University, University of Ibadan, University of Cape Town, and research centers like Institut Pasteur.

Objectives and Scope

The initiative aimed to advance understanding of monsoon dynamics by combining atmospheric science, oceanography, hydrology, agronomy, and public health studies to address vulnerability in countries like Mali, Niger, Burkina Faso, Senegal, Benin, Nigeria, Ghana, and Cameroon. Specific goals included improving seasonal prediction skill used by services such as Météo-France, informing agricultural planning linked to organizations like Food and Agriculture Organization, and supporting disaster risk reduction coordinated with United Nations Office for Disaster Risk Reduction. The scope encompassed synoptic to interannual variability, interactions with the Atlantic Meridional Mode, Atlantic hurricanes studied by National Hurricane Center, and teleconnections involving phenomena such as the El Niño–Southern Oscillation, Indian Ocean Dipole, and the North Atlantic Oscillation.

Scientific Components and Methods

Researchers used coupled model experiments with frameworks from European Centre for Medium-Range Weather Forecasts, UK Met Office Unified Model, Community Earth System Model, and EC-Earth to probe convection, land–atmosphere feedbacks, and aerosol interactions involving sources like the Harmattan dust and biomass burning traced to regions such as Côte d'Ivoire and Gabon. Observational methods integrated satellite missions including Tropical Rainfall Measuring Mission, Meteosat, Aqua (satellite), Terra (satellite), CloudSat, and CALIPSO, with in situ platforms such as radiosondes operated by Météo-France, flux towers managed by International Centre for Theoretical Physics, and oceanographic ships coordinated with Woods Hole Oceanographic Institution and Ifremer. Data assimilation approaches involved groups at National Oceanic and Atmospheric Administration, European Space Agency, and modeling centers like Los Alamos National Laboratory and Princeton University.

Field Campaigns and Observational Networks

Major field campaigns organized under the program included intensive observation periods over regions near Niamey, Dakar, Accra, and the Gulf of Guinea, deploying instrumented aircraft from institutions such as British Antarctic Survey, CNRS, and NASA research aircraft programs. Surface networks integrated stations from national services including Nigeria Meteorological Agency, Ghana Meteorological Agency, and academic observatories at Université de Ouagadougou and University of Ibadan, while ocean measurements used buoys from the Global Drifter Program and TAO/TRITON arrays. Multidisciplinary sampling linked hydrological observatories like Hydrology for the Environment, Life and Policy sites and agricultural test plots run by International Crops Research Institute for the Semi-Arid Tropics.

Key Findings and Publications

Findings published in journals such as Nature, Science, Journal of Climate, Geophysical Research Letters, Quarterly Journal of the Royal Meteorological Society, and Atmospheric Chemistry and Physics clarified roles for West African easterly waves, Sahelian rainfall trends, and aerosol radiative forcing on convection. Results highlighted links between land use change studied with contributions from NASA's Landsat program and monsoon variability, and clarified influences of remote drivers like Atlantic Multidecadal Variability and Pacific Decadal Oscillation on Sahel precipitation. High-impact synthesis reports and assessment chapters were produced in collaboration with panels at Intergovernmental Panel on Climate Change authors and informed systematic reviews at institutions including Royal Society and Academy of Sciences for the Developing World.

Contributions to Policy and Capacity Building

The program supported capacity building through training partnerships with regional universities and meteorological services, workshops involving the African Academy of Sciences, and development of seasonal forecasting tools adopted by agencies such as West African Economic and Monetary Union and national ministries of agriculture. It informed policy dialogues at forums like the African Union Summit, contributed climate services integrated into World Food Programme planning, and provided evidence used by United Nations Framework Convention on Climate Change negotiators and regional development banks such as African Development Bank to design resilience programs. The legacy included strengthened observing networks, enhanced modeling capability at centers like African Centre of Meteorological Applications for Development, and a cohort of trained scientists now active across universities and national agencies.

Category:Climate research Category:Meteorology