There is now robust evidence from virtually every region on Earth showing that the livelihood impacts from a multitude of climate hazards are driving people to diversify rural income sources . Rural households frequently accomplish the goal of livelihood diversification with an increasing reliance on migration, urban wage labour and remittances . What is different about rural-to-urban livelihood transitions under climate change impacts is that they accelerate both rural and urban stratification of wealth . On the one hand, climate change impacts on rural livelihoods increase the necessity of migration as an income strategy, accelerating migration  even while households that cannot select individuals for migration become more impoverished .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report