NOAA released its monthly global temperature analysis for April 2017 this morning. Over land and ocean surfaces combined, it was the 2nd warmest April on record. Records go back to 1880. Some highlights:
• April was 1.62°F (0.90°C) above the 20th century average
• The five warmest Aprils on record have all come since 2010
• The global ocean was the 2nd warmest on record in April, even with no El Niño in place in the Pacific Ocean.
• Over land surfaces, it was the 4th warmest April on record
Year to date:
• The global average temperature over land and ocean surfaces was 1.71°F (0.95°C) above the 20th century average of 54.8°F (14.7°C), the 2nd highest since records begin in 1880.
Today’s NOAA calculations resemble the analysis released by NASA earlier this week, also indicating that April was the 2nd warmest on record globally.
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. Using these calculations indicates that April 2017 was 1.15°C (2.07°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 April 2017, with the hottest locations in southeastern North America, eastern Russia, and parts of the western Pacific Ocean.
We have also enclosed links to 2 videos (with and without a title), highlighting the last 12 months of temperature analyses and comparing them to the longer historical record.