Tropics to launch into uncharted climate territory by 2038

Departure from historical climate variability projected to reach equatorial areas first

CLIMATE FIRSTS  Tropical areas are projected to reach unprecedented temperature highs sooner than regions farther from the equator. Cities’ years of projected departure from historical climate variability are shown, ranging from 2020 (orange) to 2100 (blue).

C. Mora et al/Nature 2013 

Global temperatures will take a permanent leap above historical bounds by 2047 if greenhouse gas emissions continue unabated, a simulation suggests.