Hottest month and 12 months on record globally


NOAA: September global temperature reaches record high; January-September global temperature ties as record highest

October 20, 2014 NOAA

The globally averaged temperature over land and ocean surfaces for September 2014 was the highest for the month since record keeping began in 1880, according to NOAA scientists. It also marked the 38th consecutive September with a global temperature above the 20th century average. The last below-average global temperature for September occurred in 1976.….

•    Global Climate Report for September 2014

•    NOAA Climate Portal




Global Highlights

  • The combined average temperature over global land and ocean surfaces for September 2014 was the highest on record for September, at 0.72°C (1.30°F) above the 20th century average of 15.0°C (59.0°F).
  • The global land surface temperature was 0.89°C (1.60°F) above the 20th century average of 12.0°C (53.6°F), the sixth highest for September on record. For the ocean, the September global sea surface temperature was 0.66°C (1.19°F) above the 20th century average of 16.2°C (61.1°F), the highest on record for September and also the highest on record for any month.
  • The combined global land and ocean average surface temperature for the January–September period (year-to-date) was 0.68°C (1.22°F) above the 20th century average of 14.1°C (57.5°F), tying with 1998 as the warmest such period on record.


Earth Just Had Its Hottest September On Record

by Katie Valentine Posted on October 20, 2014 at 12:24 pm

Last month was the warmest September the globe has experienced since record-keeping began in 1880, according to the National Oceanic and Atmospheric Administration. Researchers from NOAA’s National Climatic Data Center found that the Earth’s average global land and ocean surface temperature temperature in September was 60.30°F, which is 1.30°F warmer than the 20th century average. In September, NOAA states, “warmer-than-average temperatures were evident over most of the global land surface, except for central Russia, some areas in eastern and northern Canada, and a small region in Namibia. Record warmth was notable in much of northwestern Africa, coastal regions of southeastern South America, southwestern Australia, parts of the Middle East, and regions of southeastern Asia.” Southern California experienced a heat wave in September that forced schools to shorten the school day and saw temperatures that about 15 degrees higher than average for the region.



Hottest 12 Months On Record: NOAA Data ‘Show No Pause In Warming’

by Joe Romm Posted on October 21, 2014

NOAA reports, “The past 12 months (10-13 to 9-14) was the warmest 12-month period since records began in 1880.” While some, mainly non-scientists, have said the world hasn’t warmed in 18 years “NOAA records show no pause in warming.”


Annual temperature anomalies and 2014 projection from NOAA (see below).

Global warming is like the Energizer bunny. It just keeps going and going and going. The big difference is that there aren’t any “Energizer bunny” deniers, claiming that the bunny stopped moving 18 years ago! Not only did NOAA report Monday that last month was the hottest September on record, but they also pointed out, “The past 12 months—October 2013–September 2014—was the warmest 12-month period among all months since records began in 1880.” NOAA climatologist Jessica Blunden says “It’s pretty likely” that 2014 will break the record for hottest year.” The AP reports: Some people, mostly non-scientists, have been claiming that the world has not warmed in 18 years, but “no one’s told the globe that,” Blunden said. She said NOAA records show no pause in warming. ….What’s especially amazing is that 2014 is poised to break the global temperature record despite the fact that it isn’t an El Niño year. It is usually the combination of the underlying long-term warming trend and the regional El Niño warming pattern that leads to new global temperature records, as NASA has explained. But the underlying trend of human-caused warming is simply too strong to be denied, as it were. If we want to slow it down and ultimately stop it before it destroys a livable climate, we need to slash carbon pollution ASAP. Why does NOAA think 2014 will be a record? They released this chart as a supplement to their September global temperature report (click to enlarge):

NOAA explains:

These graphics compare the year-to-date temperature anomalies for 2014 (black line) to what were ultimately the five warmest years on record: 2010, 2005, 1998, 2003, and 2013. Each month along each trace represents the year-to-date average temperature. In other words, the January value is the January average temperature, the February value is the average of both January and February, and so on.

The graph at the top of this post, by Things Break, uses NOAA’s purple projection, which assumes that each of the last three months of 2014 matches its 3rd warmest value on record. As NOAA explains, “Each of the last six months (April through September) have been 3rd warmest or warmer.” In fact, four of the last five months — May, June, August, and September — have been first (or tied for first) warmest, so there’s a good chance 2014 will be warmer than this projection.

I asked Dr. John Abraham, a climate expert who follows global temperature trends closely, what it would mean if this becomes the hottest year on record despite the fact that there’s been no El Niño. He told me:

It is likely we will have the hottest year on record. The surprising fact is this year has not had an El Niño. This year was not supposed to be hot, at least according to those who think climate change had stopped. But the real facts tell us a different story, the Earth is still warming, the “pause” never really was, and once again….

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