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SIG Sahel – ACF
SIG Sahel – ACF

Monitoring and Early Warning System in the Sahel

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SIG Sahel – ACF
SIG Sahel – ACF

Monitoring and Early Warning System in the Sahel

Data download

Satellite data

Annual biomass production
Description: Annual biomass production is quantified in kg of dry matter per hectare (kg/ha)
Data source: The product Dry Matter Productivity DMP delivered by Copernicus Land Monitoring Service
Satellite series: SPOT-VGT; PROBA-V; SENTINEL3-OLCI
Spatial coverage: West Africa
Spatial resolution: 300 m
Time period: 1999-present
Source product update frequency: Decadal (10 days)
Target product update frequency: Annual
Raster data: Downloadable here
Aggregated data at administrative levels 0 to 3: Downloadable here
Raster data and shapefiles: Viewable and downloadable here

Vegetation cover
Description: Vegetation cover indicates the fraction of cover including photoactive green vegetation and non-photoactive dry vegetation, expressed as a percentage of area (%).
Data source: Total Vegetation Cover (TVC) by GEOGLAM RAPP – Rangeland and Pasture Productivity
Satellite series: MODIS
Spatial coverage: West Africa
Spatial resolution: 500 m
Time period: January 2001-present
Source product update frequency: 8 days
Target product update frequency: Monthly
Aggregated data at administrative levels 0 to 3: Downloadable here
Raster data and shapefiles: Viewable and downloadable here

Surface water areas
Description: Surface water area indicates the presence of water and provides monthly statistics in km².
Source data: The source dataset is the product Water Bodies WB of the Copernicus
Land Monitoring Service v1 (100 m resolution), reworked in order to
to extract statistics on the presence of surface water.
Satellite series: SENTINEL2-MSI
Spatial coverage: West Africa
Spatial resolution: 100 m
Time period extended: October 2020-present
Product update frequency: Monthly
Target product update frequency: Monthly
Aggregated data at administrative levels 0 to 3: Downloadable here
Raster data and shapefiles: Visuareadable and downloadable here

Burned areas
Description: Burned areas provide information on the areas affected by fires and give monthly and annual statistics in km²
Data source: The data source is the product Burnt Area BA from the COPERNICUS v4 Land Monitoring Service (300 m resolution), reprocessed to extract bushfire statistics.
Satellite Series: SENTINEL3-OLCI&SLSTR
Spatial Coverage: West Africa
Spatial Resolution: 300 m
Temporal Extent: June 2018-present
Source Product Update Frequency: Daily
Target Product Update Frequency: Monthly
Raster Data: Downloadable here
Aggregated data at administrative levels 0 to 3: Downloadable ici
Raster data and shapefiles: Viewable and downloadable here

Field data

Pastoral Sentinels
Description: Data from pastoral sentinels collected as part of the Pastoral Early Warning and Monitoring System (PEWS)
Spatial coverage: Burkina Faso, Ivory Coast, Mali, Mauritania, Niger, Senegal
Time period: 2016-present
Update frequency: Weekly
Data : Downloadable here

Agricultural monitoring in Timbuktu and Youwarou, Mali
Description: Data collected within the framework of the Food and Nutrition Insecurity Response Project integrating cross-cutting protection RIAP
Donor: Swiss Agency for Development and Cooperation DDC
Spatial coverage: Timbuktu and Youwarou districts in Mali
Time extension: July 2023 – January 2025
Update frequency: Ten days
Data : Downloadable here
Data : Viewable here

Monitoring of micro-enterprises in Bassikounou, Mauritania
Description: Data collected within the framework of the project to strengthen protection and socio-economic inclusion as well as social cohesion between host communities and Malian refugees in Mauritania
Donor: United Nations Refugee Organization UNHCR
Spatial coverage: Moughataa of Bassikounou in Mauritania
Time extension: January 2025 – June 2025
Update frequency: Monthly
Data : Downloadable here
Data : Viewable here

Image gallery image
Action contre la Faim ACF (2026)