Figure 1. (Left) Annual September surface air temperature anomalies over the Greenland ice sheet for 1991 to 2022, relative to the average for the 1991–2020 reference period. Data source: CARRA[2]. Credit: C3S/ECMWF/GEUS. (Right) September 2022 temperature anomalies, relative to the average. Data source: ERA5. Credit: C3S/ECMWF Copernicus Climate Change Service: In September 2022, Greenland experienced exceptional heat…