“This year’s 0.84 C temperature departure above NASA’s 20th Century baseline is 1.06 C hotter than 1880s values. It’s a number just 0.44 C (or two more strong El Ninos) away from crossing the very dangerous 1.5 C threshold that nations of the world recently pledged to attempt to avoid at the Paris Climate Summit. It’s also a number more than halfway toward hitting the catastrophic 2 C warming threshold. “
We knew it was going to be a record breaker. We knew that atmospheric greenhouse gasses in the range of 400 parts per million CO2 and 485 parts per million CO2e, when combined with one of the top three strongest El Ninos in the Pacific, would result in new all-time global record high temperatures. But what we didn’t know was how substantial the jump would ultimately be.
Today, the numbers were made public by NASA. And I hate to say it, but it’s a real doozy. Overall, according to NASA, Climate Year 2015 — the 12 month period from December of 2014 through November of 2015 — was 0.84 C hotter than NASA’s 20th Century Baseline. That’s 0.11 C hotter than previous hottest year 2014 and a full 0.21 C hotter than climate change deniers’ favorite cherry — 1998. In other words past record hot years are being…
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