2015 Could Become Warmest Year on Record
Posted by feww on December 18, 2015
Three More Global Temperature Records Broken —NOAA
State of the Climate Report: November 2015
- November 2015 was warmest November on record Globally
- September–November was the warmest such period
- Year-to-date was record warm
The November average temperature across land and ocean surfaces (SST) rose 1.75°F (0.97°C) above the 20th century average of 12.9°C (55.2°F), the highest for November in the 1880–2015 record, surpassing the previous record set in 2013 by 0.27°F (0.15°C).
- November warmth broke a monthly global temperature record for the seventh consecutive month.
- The temperature departure from average for November is also the second highest among all months in the 136-year period of record. The highest departure of 0.99°C (1.79°F) occurred last month.
- Globally-averaged land surface temperature for November was 2.36°F (1.31°C) above the 20th century average.
- Globally-averaged SST was 1.51°F (0.84°C) above the 20th century average. This was the highest for November in the 1880–2015 record, surpassing the previous record set last year by 0.36°F (0.20°C).
- The average Arctic sea ice extent for November 2015 was 360,000 square miles (~ 930,000km² ), or 8.3 percent below the 1981–2010 average. This was the sixth smallest November extent since records began in 1979.
- Antarctic sea ice extent during November 2015 was 80,000 square miles (1.2 percent) above the 1981–2010 average, the 14th largest for November in the 37-year period of record.
Additionally, September, October, and November 2015 had the three highest monthly temperature departures on record.
Out of 1,630 monthly records (1880–2015 record):
- Eight months of 2015 are among the 10 highest monthly temperature departures from their respective averages.
- All 11 months of 2015 so far are among the 25 highest.
The September–November seasonal temperature was 0.96°C (1.73°F) above the 20th century average of 14.0°C (57.1°F). This marks the highest departure from average for the season in the 136-year period of record, surpassing the previous record set last year by 0.21°C (0.38°F).
The globally-averaged temperature across land surfaces was also the highest on record for September–November, at 1.27°C (2.29°F) above the 20th century average of 9.1°C (48.3°F).
- Most of the Americas from Mexico through the northern half of South America were record warm, as were scattered regions across Africa, southern and southeastern Asia, and southern Australia.
- Across the world’s oceans, the September–November average sea surface temperature was 0.84°C (1.51°F) above the 20th century average of 16.0°C (60.7°F), the highest for September–November on record, surpassing the previous record set last year by 0.27°C (0.15°F).
The first 11 months of 2015 were the warmest such period on record across the world’s land and ocean surfaces, at 0.87°C (1.57°F) above the 20th century average of 14.0°C (57.2°F), surpassing the previous record set last year by 0.14°C (0.25°F).
- Nine of the first eleven months in 2015 have been record warm for their respective months, with January second warmest for January and April third warmest.
- The December global temperature would have to be at least 0.81°C (1.46°F) below average—or 0.24°C (0.43°F) colder than the current record low December temperature of 1916—for 2015 to not become the warmest year in the 136-year period of record.
The average global sea surface temperature for the year-to-date was the highest for January–November in the 136-year period of record, at 0.72°C (1.30°F) above average, surpassing the previous record set last year by 0.09°C (0.16°F).
The average land surface temperature was also record high, at 1.27°C (2.29°F) above average, surpassing the previous record of 2010 by 0.15°C (0.27°F).
NOAA National Centers for Environmental Information, State of the Climate: Global Analysis for November 2015, published online December 2015, retrieved on December 18, 2015 from http://www.ncdc.noaa.gov/sotc/global/201511.