NOAA listed some of this year’s significant findings: – The average annual land-surface air temperature in the Arctic measured between October 2019 and September 2020 was the second-warmest since record-keeping began in 1900, and was responsible for driving a cascade of impacts across Arctic ecosystems during the year. Nine of the past 10 years saw air temperatures at least 1 degree C (1.8 degrees F) above the 1981-2010 mean. Arctic temperatures for the past six years have all exceeded previous records. – Extremely high temperatures across Siberia during spring 2020 resulted in the lowest June snow extent across the Eurasian Arctic observed in the past 54 years. – The 2020 Arctic minimum sea ice extent reached in September was the second-lowest in the satellite record. Overall thickness of the sea ice cover is also decreasing as Arctic ice has transformed from an older, thicker, and stronger ice mass to a younger, thinner more fragile ice mass in the past decade.