NOAA released its monthly global temperature analysis for November 2017 this morning.
Over land and ocean surfaces combined, it was the 5th warmest November on record, tied with 2016. Records go back to 1880. Some highlights:
• November was 1.35°F (0.75°C) above the 20th century average of 55.2°F (12.9°C)
The global ocean temperature was the 4th warmest on record for November, even with La Niña in the Pacific
• Over land surfaces only, it was the 9th warmest November on record
• September through November (meteorological fall in the northern hemisphere) was the 4th warmest on record
• The global average temperature over land and ocean surfaces was 1.51°F (0.84°C) above the 20th century average of 57.2°F (14.0°C), the 3rd highest since records began in 1880. Only 2015 and 2016 were warmer.
To better gauge how much warming has taken place since the early industrial era, and with reference to the 2°C warming threshold agreed upon at the 2015 Paris Climate Summit, we have combined the NASA and NOAA analyses and compared them to a 1881-1910 baseline (enclosed bar chart). Using these calculations indicates that November 2017 was 1.06°C (1.91°F) above that early industrial baseline.
Enclosed are two core graphics, with versions containing no title or background:
• Each month’s global temperature anomaly over the last 12 months, with previous months shadowed to the left
• Year-to-date temperature percentiles through November 2017, with the hottest locations in eastern Australia, eastern China, and southwestern North America