According to the International Panel on Climate Changes Fifth Assessment Report, permafrost temperatures have increased in most regions since the early 1980s, and this is projected to continue into the future.
Vastavalt valitsustevahelise kliimamuutuste rhma viiendale hindamisaruandele on igikeltsa temperatuur enamikus piirkondades alates 1980. aastate algusest tusnud ning prognooside kohaselt jtkub see ka tulevikus.