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A climate refugee is a person who is forced to relocate, either to a new country or to a new location within their home country, due to global warming related environmental disasters. Such disasters may be evidence of human-influenced ecological change and disruption of Earth's climate system, primarily through the emissions of greenhouse gases, although other natural factors may also play a role. Humankind may have drastically altered the chemical composition of the global atmosphere, with profound implications for climate.
Such disturbances can result in increased droughts, desertification, sea level rise, and disruption of seasonal weather patterns. A statistically significant correlation between migration and environmental degradation including climate change was shown by Afifi and Warner (2007), controlling for the already established major drivers of migration.