Så här verkar IPCC själva ha skrivit 2007.
https://www.ipcc.ch/site/assets/uploads/2018/05/ar4_wg1_full_report-1.pdf
https://www.ipcc.ch/site/assets/uploads/2018/05/ar4_wg1_full_report-1.pdf
...their analysis is characterised by positive rainfall anomalies
over the northeastern sector of eastern Africa (Ethiopia,
Somalia, Kenya and northern Uganda) and opposite conditions
over the southwestern sector (Tanzania, southern parts of the
Democratic Republic of the Congo and southwestern Uganda).
This signal signifi cantly strengthened in recent decades.

