Heterogeneous effects of weather and climate change on human migration While estimated numbers of past and future climate migrants are alarming the growing empirical evidence suggests that the association between adverse climate related events and migration is not universally positive. This dissertation seeks to advance our understanding of when and how climate migration emerges by analyzing heterogeneous climatic influences on migration in low and middle income countries. To this end it draws on established economic theories of migration datasets from physical and social sciences causal inference techniques and approaches from systematic literature review. In three of its five chapters I estimate causal effects of processes of climate change on inequality and migration in India and Sub Saharan Africa. By employing interaction terms and by analyzing sub samples of data I explore how these relationships differ for various segments of the population. In the remaining two chapters I present two systematic literature reviews. First I undertake a comprehensive meta regression analysis of the ...