Link
- CCCMA - CMC
- CMB - NCEP
- ECMWF
- European Centre for Medium Range Weather Forecasts (ECMWF): rainfall anomalies over Sahel.
- International Research Institute for Climate and Society (IRI): Numerical Climate Prediction Tools
- International Research Institute for Climate and Society (IRI): Seasonal net assessment precipitation and temperature forecasts.
- Met Office | Seasonal model output
- National Oceanic and Atmospheric Administration Climate Diagnostic Center (CDC - NOAA): an interactive web page where to plot, analyze and compare the most used climate indices.
- prova Link
- University of East Anglia Climate Research Unit (CRU - UEA): Sahel rainfall record maintained by Mike Hulme.
- University of Washington Joint Institute for the Study of the Atmosphere and Ocean (JISAO): Gulf of Guinea standardized rainfall index 1899 - 2001.
- University of Washington Joint Institute for the Study of the Atmosphere and Ocean (JISAO): Professor Sharon Nicholson Africa rainfall indices, 1901 - 1994.
- University of Washington Joint Institute for the Study of the Atmosphere and Ocean (JISAO): Sahel rainfall index, 1898 - 2004.