Fig. 2
Permafrost temperature and rate of change near the depth of zero annual amplitude. a, b Mean annual ground temperatures for 2014–2016 in the Northern Hemisphere and Antarctica, n = 129 boreholes. c, d Decadal change rate of permafrost temperature from 2007 to 2016, n = 123 boreholes (Eq. 3). Changes within the average measurement accuracy of ~±0.1 °C are coded in green. Continuous permafrost zone (>90% coverage); discontinuous permafrost zones (<90% coverage). Permafrost zones are derived from the International Permafrost Association (IPA) map46. World Borders data are derived from http://thematicmapping.org/downloads/world_borders.php and licensed under CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0/)
