Skip to content
SIG Sahel – ACF
SIG Sahel – ACF

Monitoring and Early Warning System in the Sahel

  • About us
  • Documents
  • Countries
    • Burkina Faso
    • Côte d’Ivoire
    • Chad
    • Mali
    • Mauritania
    • Niger
    • Senegal
    • Sahel Regional
  • Data download
  • Contact
  • Français
SIG Sahel – ACF
SIG Sahel – ACF

Monitoring and Early Warning System in the Sahel

Category: Sahel

Biomasse

West Africa Rain Forecasts and Biomass Vulnerability: April-July

01/05/201712/11/2023

ACMAD/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 Leone
  • If this trend continues during the rest of the rainy season, highly probable that these areas will have poor agricultural yields
    • Pastoral impacts could include: less availability of agricultural residue and pasture for 2018 dry season, prolonged transhumance.
      West Africa Rain Forecasts and Biomass Vulnerability: April-July

Full resolution map available here

Publications

Surface Water Accessibility Anomaly Map: February 2017

03/03/201725/10/2017

Anomalie_FEV_2017

Publications

Surface water accessibility anomaly – January 1, 2017

05/01/201725/10/2017

201701_anomaly_access

Carte 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).

Biomass Production Anomaly Map – Rainy Season 2016

04/10/201625/10/2017

biomasse_1-octobre

Publications

Mid-Season Analysis: Biomass Anomaly August 11, 2016

18/08/201625/10/2017

Biomass_20160811

Publications

Start of the rainy season – August 11, 2016

18/08/201625/10/2017

SoS 20160811

Publications

Start of the rainy season – July 2016

04/08/201625/10/2017

Image Haut-Resolution

Retards 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

01/11/201503/09/2021

Date: Novembre 2015

Auteur:ACF WARO

Report downloadable here

Analyse de Biomasse- Sahel 2014

25/11/201403/09/2021

Dccument: Analyse de la production de biomasse 2014 et perspectives pour 2015

Date: Novembre 2014

Auteur: ACF WARO

 

Rapport téléchargeable ici

Analyse de Biomasse- Sahel 2013

01/11/201309/01/2024

Analyse de production de biomasse – Saison des pluies 2013

Auteur: ACF WARO

Date: Novembre 2013

Rapport en français téléchargeable ici

  • Previous
  • 1
  • …
  • 14
  • 15
  • 16
  • Next

Search among publications

Subscription to newsletter

Subscribe to List*

Loading

GeoSahel.info

Access to the interactive mapping platform Tutorial on interpreting maps

Conditions for pastoral follow-up

Access to the pastoral surveillance dashboard

Regional Office for West and Central Africa

  • LinkedIn
  • X
  • Facebook

International Action Against Hunger Network

  • ACF-Canada
  • ACF-Deutschland
  • ACF-España
  • ACF-France
  • ACF-Italia
  • ACF-UK
  • ACF-USA

Partners

  • Fondation Prince Albert II de Monaco
  • Fondation Recherche ACF
  • Réseau Billital Maroobé – RBM
  • Vétérinaires Sans Frontière Belgique – VSF-B
  • ENABEL
  • VITO Flemish Institute of Technology
Image gallery image
Action contre la Faim ACF (2026)