Global Outlook for Ice & Snow
(a)
Mean annual temperature at the permafrost surface (°C)
-25 - -8
-8 - -2.5
-2.5 - -0.5
1980 - 1999
-0.5 - 0
(b)
Projected change in mean annual temperature at the permafrost surface (°C)
-3 - -0
0 - +2
+2 - +4
+4 - +6
+6 - +8
2080 - 2099
thawing permafrost
CHAPTER 7
FROZEN GROUND
187
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