"Climate migration" (definition - for source, see at bottom below):
movement from habitual places of residence due largely to alterations in the environment significantly related to climate change
This definition seeks to avoid classifying people according to personal motives for relocation ("environmental migrant," "climate refugee," etc.). It instead orients towards identifying migration movements where alterations and disruptions to
the natural environment (coastal flooding, risk of severe weather, ecological degradation, habitat loss, disease, etc.), directly influenced in a significant way by climate change, are prompting more migration than would otherwise occur. In determining whether a discrete movement of migrants might be labelled "climate migration," the quantitative mix of "economic migrants," victims of sudden natural disaster, refuge-seekers from unbearable deterioration in environmental living conditions, etc. (to the extent to which that mix might be objectively assessed) is secondary to the general characteristics of the temporal and geographic relocation.
Resettling the first American 'climate refugees' (NY Times,
(from the slowly disappearing Isle de Jean Charles, off the Louisiana coast)
Climate refugees are the others (Tages-Anzeiger, 30-April-16, in
The gathering storm of climate migration (Devex, 25 March
What to do about climate migration (Jane McAdam,
Interpreter, July 2013)
Climate change alone does not cause people to move...Climate change
exacerbates pre-existing pressures; people who are already vulnerable become more so....People at risk of displacement from climate change and natural disasters do not want to be seen as refugees....Policymakers need to appreciate
that migration is one form of adaptation to climate change and, in consultation with affected communities, devise thoughtful strategies to facilitate this.
Climate refugees (trailer for
Longer term forms of climate migration (defined more broadly)
Because climate change is a long term phenomenon, it can also have, and may be expected to increasingly have, important secondary impacts on global migration patterns, e.g. those related to the "North-South" economic divide.
Excerpt from the Epilogue of The Business of Transatlantic Migration (p. 267)
“Growing inequality is analogous to global warming. Its effects are diffuse and long-term, and there is always something more pressing to deal with.” *
One of those long-term effects could quite possibly be increased attempts at migration. (If, as seems probable, global warming has more serious negative impacts upon poorer
countries, the future role of planetary climate change on global migration might be mainly indirect, through exacerbation of global inequality, even though the proximate causes of future
mass migrations will likely be neither inequality or climate per se).
* Robert Wade, Economist, April 28, 2001, pp. 72-74.
Beine, Michel and Christopher Parsons, "Climatic Factors as Determinants of International Migration: Redux."
CEPR working paper (2016).
The definition of "climate migration" used here (see top of page) is adapted from:
The Migration Newsdesk, International Organization for Migration (IOM), 25-Apr-16 https://www.iom.int/newsdesk/20160425 [accessed 13-May-16]
"Here is IOM's working definition of climate migration: the movement, withing a state or across an international border, of a person or groups of persons who are obliged to leave their habitual place of residence, or choose to do so, either temporarily or permanently, predominately for reasons of sudden or progressive change in the environment due to climate change."