The relationship between drought and El Nino over Botswana

Nicholson, S.E.; Leposo, D.; Grist, J.P. 2001 The relationship between drought and El Nino over Botswana. Journal of Climate, 14 (3). 323-335. https://doi.org/10.1175/1520-0442(2001)014<0323:TRBENO>2.0.CO;2