The environment has always been a driver of migration, as people flee to survive natural disasters or, faced with harsh and deteriorating environmental conditions, move to seek opportunities elsewhere. Climate change is expected to exacerbate sudden- and slow-onset disasters and gradual environmental degradation. |
Internal displacement associated with slow-onset environmental change and disasters is a complex and dynamic phenomenon. Often hard to distinguish from internal migration, displacement driven by gradually evolving environmental change is primarily a development issue.
These messages were developed by the Advisory Group on Climate Change and Human Mobility, with contributions from other civil society and UN organisations for the Twenty-fourth session of the United Nations Framework Convention on Climate Change (UNFCCC) Conference of the Parties (COP 24) Katowice, Poland, 3–14 December 2018.
The long-term warming trend has continued in 2018, with the average global temperature set to be the fourth highest on record. The 20 warmest years on record have been in the past 22 years, with the top four in the past four years, according to the World Meteorological Organization (WMO).