On July 31st, the highest point on Greenland's ice sheet experienced melting for only the ninth time in 2000 years. Here are all the years that has happened, including twice in the last decade.

Directly observed
2019
2012

Seen in ice cores
1889
1192
1094
992
758
753
244

— Dr. Robert Rohde (@RARohde) August 2, 2019