Biomasse West Africa Rain Forecasts and Biomass Vulnerability: April-July 01/05/201712/11/2023ACMAD/MESA’s 2017 forecasts for the April-July period are available. As far as West Africa is concerned these are initial forecasts and cover mostly the coastal countries/ Gulf of Guinea. Significant weather incidents for the Sahelian belt are not yet detected, but more data will be available soon. This map will be updated with new data with the release of more forecasts from ACMAD. This dataset shows ACMAD/MESA’s currently available forecasts, with ACF’s Biomass Vulnerability Index. The Vulnerability Index is a recursive indicator of biomass anomalies and identifies areas with multiple years of negative biomass production. These zones, marked as “very vulnerable” or “vulnerable”, pose particular dangers for pastoral communities, whose herds can be structurally damaged by consecutive years of poor vegetation/ forage production. To note:An unfavourable precipitation during the April-July period is predicted for most Burkina Faso, North-Western Nigeria, Northern Ghana and the southern region of Niger. This will likely have negative impacts on agricultural production. A late start of rains for Burkina Faso could indicate a prolonged transhumance of pastoral herds.Unfavorable rains during this period predicted for much of Senegal, Guinea, Liberia and Sierra LeoneIf this trend continues during the rest of the rainy season, highly probable that these areas will have poor agricultural yieldsPastoral impacts could include: less availability of agricultural residue and pasture for 2018 dry season, prolonged transhumance. Full resolution map available here
Publications Surface water accessibility anomaly – January 1, 2017 05/01/201725/10/2017Carte d’anomalie d’accesibilité des eaux de surface en Afrique de l’Ouest au 1 Janvier 2017, calculée contre la moyenne de 1998-2017.Analyse effectué avec le produit Small Water Bodies (SWB) du satellite PROBA-V de Copernicus Global Land Service. Le produit SWB est traité par l’institut Flamand de la Technologie (VITO).
Publications Start of the rainy season – July 2016 04/08/201625/10/2017Image Haut-ResolutionRetards significatives: centre Sénégal (Kaolack) et centre-ouest Nigeria. Demarrage plutot normale ou précoce pour l’ensemble de la région du Sahel.
2015 Sahel Biomass Report 01/11/201503/09/2021Date: Novembre 2015Auteur:ACF WAROReport downloadable here
Analyse de Biomasse- Sahel 2014 25/11/201403/09/2021Dccument: Analyse de la production de biomasse 2014 et perspectives pour 2015Date: Novembre 2014Auteur: ACF WARO Rapport téléchargeable ici
Analyse de Biomasse- Sahel 2013 01/11/201309/01/2024Analyse de production de biomasse – Saison des pluies 2013Auteur: ACF WARODate: Novembre 2013Rapport en français téléchargeable ici