We employ a triple difference-in-difference approach, using censuses and georeferenced
temperature data, to quantify heat effects on internal migration in Central America and the
Caribbean. A 1-standard deviation increase in heat would affect the lives of 7,314 and 1,578
unskilled young women and men. The effect is smaller than observed in response to
droughts and hurricanes but could increase with climate change. Interestingly, youth facing
heat waves are more likely to move to urban centers than when exposed to disasters …

Emerging evidence demonstrates migration may be used by individuals in the southern
hemisphere to adapt to environmental changes. The authors build upon recent work in the
region using a similar triple difference-in-difference quasi-experimental design and dataset
to test whether repeated and or prolonged heat exposure affect inter-province migration. The
growth literature has pointed to numerous examples in which environmental migration
contributes to urbanization. The authors therefore additionally predict how gradual changes …