Climate Change and Migration

Improving Methodologies to Estimate Flows

image of Climate Change and Migration

Recent empirical studies have found that climate variability and migration are characterized by a non-linear relationship. This study explores the climate change impacts on migratory processes. It outlines the key elements of natural and human induced climate change of potential relevance to migration, discusses the current state of debate about the relationship between climate change and migration, and describes possible approaches and methodologies with which to further our understanding of climate change-related migration.



Discussion and conclusion

The climate system is a collection of complex and non-linear operating spheres including the atmosphere, ocean, cryosphere, lithosphere, and biosphere. Due to strong linkages between these spheres, changes and variability in parameters and processes of these individual spheres can cause change and variability throughout the climate system. Climate change can be caused by human activities and natural events including volcanic eruptions and orbital variability. The international scientific community is highly confident that climate change will occur throughout the 21st century, caused by human activities including greenhouse gas production and land use changes. The impacts of this climate change include rising sea levels, deforestation and dry land degradation, as well as increased natural disasters. It is recognized that these changes will pose severe challenges on development and livelihoods, settlement options, food production, and disease. In turn, these environmental events and processes are feared to likely lead to large-scale displacements of people, both internally and internationally.


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