The combined global land and ocean surface temperature was the warmest on record for May, March-May (Northern Hemisphere spring-Southern Hemisphere autumn), and the period January-May.
The warming in May is greatest precisely where climate science suggested it would be â the high northern latitudes (see âWhat exactly is polar amplification and why does it matter?â â precisely the worst possible place from the perspective of amplifying feedbacks (see âTundra 4: Permafrost loss linked to Arctic sea ice lossâ):
