Droughts in water scarce regions are being aggravated by human-driven climate change. While rainfall reduction is the main driver, increased temperature and evaporation can also play a role.

 

Another influence on drought severity is the condition of the catchment area where rain falls and drains into rivers. Important factors here include the amount and type of vegetation covering the catchment and soil characteristics.

 

Guest on the line – Dr.Petra Holden- is an  inter- and transdisciplinary conservation scientist at the African Climate and Development Initiative (ACDI), University of Cape Town.