Since about 2006, NOAA has given its global surface temperature “anomalies” relative to 20th century(1901 to 2000) average global surface temperatures. NOAA usually up-dates its lists of global temperature anomalies in the middle of each calendar month. NOAA does not maintain a publicly accessible archive of previous editions of its lists of global temperature anomalies.
Thursday 15 September 2016
20th centuary mean global surface temperatures.
20th century (1901 to 2000) mean global surface temperatures.
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