1. Brooks , N. 2004 Drought in the African Sahel: Long term perspectives and future prospects Tyndall Cent. Working Pap. 61 University of East Anglia Norwich, U. K
2. Dynamics of deserts and drought in the Sahel;Charney;Q. J. R. Meteorol. Soc.,1975
3. GFDL's CM2 global coupled climate models-part 1: Formulation and simulation characteristics;Delworth;J. Clim.,2005
4. Sahel rainfall variability and worldwide sea temperature, 1901-85;Folland;Nature,1986
5. Wind-field coherence and its variations over west Africa;Fontaine;J. Clim.,1992