Global warming records: October 2015 Global Temperature

Published: November 18, 2015

Global warming records: October 2015 Global Temperature, The planet has not been only record warm this year, it’s been so unusually mild that the temperature records themselves have set records of their own. This is the case with October 2015, according to new preliminary NASA data released Tuesday.

The information shows that October 2015 was by far the warmest October on record, dating back to 1880. Not only that, but October also had the largest temperature departure from average of any month on record.

The scorchingly hot October seals the deal: 2015 is almost certain to become the Earth’s hottest year since instrument records began in 1880. This means the year will beat out 2014, and become yet another data point showing that manmade global warming, plus natural climate variability, is pushing the climate into new territory.

Global average surface temperatures so far this year versus the other warmest years on record.

Importantly, this was also the first time that a single month exceeded the 1-degree Celsius temperature anomaly, surpassing the 0.97 degree Celsius temperature anomaly in January 2007. This is a symbolic milestone, but one that will be broken more frequently as the climate continues to warm due to increasing amounts of greenhouse gases in the air because of human activities.

The NASA data corroborates information released by the Japan Meteorological Agency (JMA) on Monday, also showing that October was the warmest such month on record, as the year heads toward setting a record for the warmest calendar year, beating out 2014 for the top spot.

On Wednesday, the National Oceanic and Atmospheric Administration (NOAA) released its October temperature data, and also found the month was the warmest such month on record, and broke the record for the largest monthly global temperature anomaly in 1,630 months of record-keeping. The agency said the month fell just short of the 1 degree Celsius anomaly, at 0.98 degrees Celsius above average, but nevertheless solidly beat the previous record monthly temperature anomaly, which was set in September.

According to NOAA, 2015 is cruising toward the record for the planet’s warmest year since instrument records began.

Parts of South America, the Atlantic Ocean, Indian Ocean, Africa, Europe, Australia, the Pacific Ocean and the western U.S. were all record warm in October, according to the NOAA data.

In the JMA data set, which analyzes similar temperature records but processes them differently than NOAA and NASA do, this October beat October 2014 by 0.34 degrees Fahrenheit, or 0.19 degrees Celsius. According to NASA, though, this October beat October of last year by 0.32 degrees Fahrenheit, or 0.19 degrees Celsius.

According to the JMA, this was the largest temperature departure from average for any month so far this year.

The JMA information shows October was unusually mild throughout areas of the Northeast, Central, and South Pacific Ocean, the Indian Ocean, much of North America, parts of Asia, and most of Europe – as well as all of Australia, Africa and the Middle East.

The warmth in the Central Pacific is related to a strong El NiƱo event that is characterized by unusually mild ocean temperatures along the equator, from the central Pacific to the west coast of South America.

Global average surface temperature anomalies through October 2015, showing where 2015 as a whole is likely to end up.


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