About this Map
Overview
This map is under development by researchers at Oregon State University and Columbia University, as part of a study titled, "Comparing Underlying Drivers of International Migration out of Central America and West Africa". The purpose of this map is to visualize international migration flows along with candidate drivers of migration.
Map layers
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Apprehensions at U.S. Southwest border
- Description: Apprehensions of individuals by origin, demographic, and age
- Source: U.S. Customs and Border Protection
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Outmigration flows by country
- Description: International migration flows of asylum seekers and refugees
- Source: United Nations High Commissioner for Refugees
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Sending areas in Central America & West Africa
- Description: Estimated origins of international residence changes from sending areas in Central America and West Africa, derived from Twitter user timelines
- Source: Twitter
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Conflict fatalities
- Description: Total fatalities from armed conflict events, including civilians
- Source: Uppsala Conflict Data Program
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Climate variables that affect crops
- Description: Vapor pressure deficit (VPD), VPD anomalies, time above VPD threshold, and precipitation anomalies
- Source: Columbia IRI Data Library
Author: Brian G. Katz1
Co-authors: David J. Wrathall1, Michael Puma2, Susana Adamo2, Fabien Cottier2, Sarah De La Rosa1, Jennifer Nakamura2, Richard Seager2, and Alex de Sherbinin2
Affiliations:
1 College of Earth, Ocean, and Atmospheric Sciences, Oregon State University
2 Columbia Climate School, Columbia University
Funding: This work was supported by the Minerva Research Initiative.
