TS.B.6.1 The most common climatic drivers for migration and displacement are drought, tropical storms and hurricanes, heavy rains and floods . Extreme climate events act as both direct drivers  and indirect drivers  of involuntary migration and displacement . The largest absolute number of people displaced by extreme weather each year occurs in Asia , followed by sub-Saharan Africa, but small island states in the Caribbean and South Pacific are disproportionately affected relative to their small population size . 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report