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Record-breaking temperatures scorched the planet last year, making 2014 the hottest in more than a century and raising new concerns about global warming, US government scientists said on Friday.
The much-anticipated report by scientists at the National Oceanic and Atmospheric Administration (NOAA) was confirmed by an independent analysis from the US space agency NASA that reached the same conclusion.
"Record warmth was spread around the world," said the NOAA report.
Extreme heat blanketed Alaska and much of the western United States last year. Several European countries set temperature records. And the ocean surface was unusually warm virtually everywhere except around Antarctica, the scientists said, providing the energy that fueled damaging Pacific storms.
In the annals of climatology, 2014 now surpasses 2010 as the warmest year in a global temperature record that stretches back to 1880. The 10 warmest years on record have all occurred since 1997, a reflection of the relentless planetary warming that scientists say is a consequence of human emissions and poses profound long-term risks to civilisation and to the natural world.
Record cold for the year was apparent only in some parts of the eastern and central United States.
NASA and NOAA have just reported that global surface temperatures in 2014 were the hottest on record. That also means 2014 was likely the hottest the Earth has been in millennia, and perhaps as much as 100,000 years.
But what’s really remarkable is that 2014 set this record without the aid of an El Niño event. El Niño events create conditions in which sea surface and hence global surface temperatures are anomalously hot. We call this part of the Earth’s “internal variability” because these events just temporarily shift heat around between the ocean surface and its depths.
originally posted by: Jamie1
a reply to: cuckooold
From your source:
"2014 was only the 34th warmest year on record for the lower 48 states."
Their explanation is that global warming is causing unusually cold temperatures in the U.S.
Yet some scientists, eyeing the fourth year in a row of exceptionally harsh late-winter weather in parts of Europe and North America, suggest warming is precisely the problem.
In a complex tango between ocean and atmosphere, warming is causing icy polar air to be displaced southwards, they contend.
"The linkage is becoming clearer and clearer, I think, although the science has not yet been settled," said Dim Coumou of the Potsdam Institute for Climate Impact Research (PIK) near Berlin.
The theory derives from a long-studied Arctic phenomenon called a positive feedback—in plain words, a vicious circle.
But not only does the cold spell not disprove climate change, it may well be that global warming could be making the occasional bout of extreme cold weather in the U.S. even more likely. Right now much of the U.S. is in the grip of a polar vortex, which is pretty much what it sounds like: a whirlwind of extremely cold, extremely dense air that forms near the poles. Usually the fast winds in the vortex—which can top 100 mph (161 k/h)—keep that cold air locked up in the Arctic. But when the winds weaken, the vortex can begin to wobble like a drunk on his fourth martini, and the Arctic air can escape and spill southward, bringing Arctic weather with it. In this case, nearly the entire polar vortex has tumbled southward, leading to record-breaking cold.
originally posted by: caterpillage
Not too concerned no. It will warm up, then cool down. Then it will likely warm up again.
And as far as the Al Gore carbon credit scam, those evil corporations and diabolical oil companies will pass that cost directly to you and I. The poor will pay that bill. Not the rich.
I can almost predict the responses to this thread in advance from some of the naysayers, about climate change and global warning. There will of course be those who say either the solar system is warming, or there's a warming trend, as well as those who will say climate change is natural and us humans couldn't possibly have an effect on temperatures. Others will speak of the Al Gore/Carbon Credit scam designed to extort funds away from those oh so poor oil/petroleum companies, and of course Murdoch has no vested interest in denying global warming. There will also be a few who simply make jokes without any evidence to back them up.
What about the people (like me) that state there is not enough empirical evidence to state one way or the other? I'm not going to scream that the sky is falling without enough proper empirical evidence showing this isn't a trend. How can anyone?