Figure above shows rainfall fluctuations between the 1900-2000 (source FAO)

Rainfall records from the early 1900s to mid-1980s show that Africa’s average annual rainfall has decreased since 1968, and has been fluctuating around a notably lower mean level (UNEP 1985). This data corresponds with the temperatures data below for the same period.

Human activities can contribute to the frequency and impacts of natural climatic events. The altering of local climate and rainfall patterns and increases the risk of drought. At the same time clearing of vegetation, damming of rivers and draining of wetlands reduces the natural ability to absorb excess water, increasing the impacts of floods. The impacts on humans continue to grow in relation to the population numbers.

Scientific data is necessary to help formulate appropriate policies to deal with predictable events.  The DEWA/GRID is one such repository and facility.

DEWA/GRID-Nairobi is one of UNEP’s major centers for data and information management, with a unique, “value-adding” mandate in the handling of national, sub-regional and regional environmental statistics and data, which in turn supports the environment assessment and early warning activities of UNEP and its partners.