Red
Well-Known Member
Right. The new study confirms climate denialism! And climate scientists carry no weight! Oh, wait, it does no such thing….BTW, paleoclimate studies evolve with new information. In fact, believe it or not, that’s the way all science works.
Stolen from Quora: “The foundation of science is that a theory can never be proven. We never know if some new data will come someday and falsify a theory. A good theory that has a lot of evidence for it is accepted by most scientists as the best theory that we know of so far. But they can never say for sure that it is true”.
(News flash: scientists revise understanding of paleoclimate changes, in response to new data!)
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“If you're studying the last couple of million years, you won't find anything that looks like what we expect in 2100 or 2500," said Scott Wing, a co-author on the paper and a curator of paleobotany at the Smithsonian National Museum of Natural History. "You need to go back even further to periods when the Earth was really warm, because that's the only way we're going to get a better understanding of how the climate might change in the future."
The new curve reveals that temperature varied more greatly during the past 485 million years than previously thought. Over the eon, the global temperature spanned 52 to 97 degrees Fahrenheit. Periods of extreme heat were most often linked to elevated levels of the greenhouse gas carbon dioxide in the atmosphere.
"This research illustrates clearly that carbon dioxide is the dominant control on global temperatures across geological time," Tierney said. "When CO2 is low, the temperature is cold; when CO2 is high, the temperature is warm."
The findings also reveal that the Earth's current global temperature of 59 degrees Fahrenheit is cooler than Earth has been over much of the Phanerozoic. But greenhouse gas emissions from human-caused climate change are currently warming the planet at a much faster rate than even the fastest warming events of the Phanerozoic, the researchers say. That speed of warming puts species and ecosystems around the world at risk and is causing a rapid rise in sea level. Some other episodes of rapid climate change during the Phanerozoic have sparked mass extinctions.
Rapidly moving toward a warmer climate could spell danger for humans who have mostly lived in a 10 degree Fahrenheit range for global temperature, compared to the 45 degree span of temperatures over the last 485 million years, the researchers say.
news.arizona.edu
The study is open access at the moment:
Stolen from Quora: “The foundation of science is that a theory can never be proven. We never know if some new data will come someday and falsify a theory. A good theory that has a lot of evidence for it is accepted by most scientists as the best theory that we know of so far. But they can never say for sure that it is true”.
(News flash: scientists revise understanding of paleoclimate changes, in response to new data!)
————————————————————————————————————————-
“If you're studying the last couple of million years, you won't find anything that looks like what we expect in 2100 or 2500," said Scott Wing, a co-author on the paper and a curator of paleobotany at the Smithsonian National Museum of Natural History. "You need to go back even further to periods when the Earth was really warm, because that's the only way we're going to get a better understanding of how the climate might change in the future."
The new curve reveals that temperature varied more greatly during the past 485 million years than previously thought. Over the eon, the global temperature spanned 52 to 97 degrees Fahrenheit. Periods of extreme heat were most often linked to elevated levels of the greenhouse gas carbon dioxide in the atmosphere.
"This research illustrates clearly that carbon dioxide is the dominant control on global temperatures across geological time," Tierney said. "When CO2 is low, the temperature is cold; when CO2 is high, the temperature is warm."
The findings also reveal that the Earth's current global temperature of 59 degrees Fahrenheit is cooler than Earth has been over much of the Phanerozoic. But greenhouse gas emissions from human-caused climate change are currently warming the planet at a much faster rate than even the fastest warming events of the Phanerozoic, the researchers say. That speed of warming puts species and ecosystems around the world at risk and is causing a rapid rise in sea level. Some other episodes of rapid climate change during the Phanerozoic have sparked mass extinctions.
Rapidly moving toward a warmer climate could spell danger for humans who have mostly lived in a 10 degree Fahrenheit range for global temperature, compared to the 45 degree span of temperatures over the last 485 million years, the researchers say.
Study: Over nearly half a billion years, Earth's temperature has changed drastically, driven by carbon dioxide
Earth has been and can be warmer than it is today, but humans and animals can't adapt fast enough to keep up with climate change, a new study finds.
The study is open access at the moment:
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