Fig. 1: Sensitivity of International Migration to Climate and its relationship with national indicators.
From: Evidence of climate and economic drivers affecting migration in an unequal and warming world
a Sensitivity of International Migration to Climate (SIMC), measured as the correlation between international migration and six selected climate indices—frost days (fd), ice days (id), heating degree days (hddheat18), cooling degree days (cddcold18), growing season length (gsl), and growing degree days (gddgrow10)—across 18 sub-regions. b Correlation between SIMC and national-level indicators for 160 countries and regions, including gross domestic product (GDP), electric power consumption (EPC), energy use (EU), life expectancy at birth (LEB), mortality rate under age 5 (MR5), arable land per capita (AL), crop production index (CPI), unemployment rate (UT), urban population (UP), rural population (RP), government expenditure on education (GEE), literacy rate (LRA), carbon dioxide emissions (CO₂), renewable internal freshwater resources (RFR), fossil fuel energy consumption (FFC), Human Development Index (HDI), Environmental Sustainability Index (ESI), and Happy Planet Index (HPI). Asterisks indicate statistically significant correlations at the 95% confidence level.
