CLIMATIC CHANGE AND VARIABILITY

Abstract

it is rre~ h in. our memories that in recent years the adverse c11~ at'c events have. frcquently disrupted the human socieues. The seventy of Sahelian drought. 1968-73, has caught the public attcnuon. More recently the drought has occurred with double intensity and its disastrous efTects h~ ve 1l0W spread over Ethiopia, Sudan and other neighbouring African countries. III the.! 970s, the adverse climate became a major dcstabilizing factor III the national economies and the food p~ oductioll of the world. The year 1972 saw a world-WIde