Scientists from the UK's Met Office have researched the causes of the 2011 East African drought and found human caused climate change was a significant contribution. The drought was a humanitarian disaster that killed an estimated 50,000 people, with 13 million in need of assistance in Somalia, Djibouti, Ethiopia and Kenya. Almost 30,000 children under the age of five were believed to have died of malnutrition in Somalia.
The drought had two components - the 'short rains' of October - November rainy season in 2010 which failed to appear, and then the absence of the 'long rains' from March - June of 2011 which really created the humanitarian crisis. The UN declared a famine on 20 July in southern Somalia, the first famine declared globally in 30 years. It was categorised as the worst drought in the region for 60 years.
Climate scientist Simon Mason from Columbia University said that East Africa has experienced a strong drying trend over the last 10 years. It is thought that rising sea surface temperatures in the Indian Ocean create conditions that pull moisture away from East Africa.