And the superlative of “hottest year” goes to…2014! (Sorry, 2010, but you couldn’t even hold the title for a half-decade.) NOAA and NASA have just confirmed that last year’s temperatures pushed the mercury 1.24 degrees Fahrenheit above the 20th-century average, surpassing the previous record-holder by 0.07 degrees.
“This is the latest in a series of warm years, in a series of warm decades,” said Gavin Schmidt, director of NASA's Goddard Institute for Space Studies, in a press release. “While the ranking of individual years can be affected by chaotic weather patterns, the long-term trends are attributable to drivers of climate change that right now are dominated by human emissions of greenhouse gases.”
The newest data point makes 38 years in a row with higher-than-average global temperatures. With the exception of 1998, the 10 warmest years since such record-keeping began in 1880 have all occurred since 2000.
NASA and NOAA are two of the four major government agencies tracking global temperature. Earlier this month, the Japanese Meteorological Agency released preliminary data that also awarded 2014 the number one spot. The Met Office Hadley Centre in the United Kingdom has said that 2014 was the UK’s hottest year on record and is expected to release its global data soon. Each agency uses slightly different methods for their analysis, so the fact that all are arriving at the same conclusion adds weight to each individual finding.
What, the announcement doesn’t jibe with your chilly, polar-vortex-filled memories of last year? That’s because much of the United States (with the major exception of California) was cooler than average. But there’s a great big blue world out there, and most of it was red-hot—Australia literally melted (some of its roads did, anyway). The globe also felt the hottest May, June, August, September, October, and December ever recorded.
“We have an increase of carbon dioxide in the atmosphere – and that is a greenhouse gas because it traps the outgoing, longwave radiation and warms the atmosphere and warms the earth and warms the oceans.
“What we all hope is that all of the observations which we collect will be interpreted by our leaders and they will realize that it’s important to have a constant climate on the planet. This is very important for our civilisation.”