Temperature Record 101: How We Know What We Know about Climate Change

2021 was tied for the sixth warmest year on NASA’s record, stretching more than a century.But, what is a temperature record?GISTEMP, NASA’s global temperature analysis, takes in millions of observations from instruments on weather stations, ships and ocean buoys, and Antarctic research stations, to determine how much warmer or cooler Earth is on average from year to year.Stretching back to 1880...
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