Yarddog
Diamond Member
- Jun 13, 2014
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From your SciAm article:
Earlier this year, for the first time in human history, atmospheric carbon dioxide reached 400 parts per million (ppm), surpassing a preindustrial average of about 280 ppm that has prevailed with slight variations for the past several million years.Pessimistic projections from the United Nations Intergovernmental Panel on Climate Change forecast atmospheric carbon dioxide levels soaring beyond 1,000 ppm later this century. As the world warms not from a brightening sun but from fossil fuel–burning humans, some scientists have wondered just how close our planet might be to tumbling into a runaway state. Studies in the 1980s and ‘90s suggested the present-day Earth was safe against a runaway, but a paper published this week in Nature Geoscience argues that “the runaway greenhouse may be much easier to initiate than previously thought.” Indeed, the study suggests that without the cooling effects of certain types of clouds, modern Earth would already be well on its way to broiling like Venus. (Scientific American is part of Nature Publishing Group.)
According to the study’s lead author, Colin Goldblatt of the University of Victoria in British Columbia, the disturbing result hinges less on carbon dioxide and more on humble water vapor, which recent investigations have shown absorbs solar radiation more efficiently than previously believed. “The old answer was that a runaway on Earth right now was theoretically impossible,” Goldblatt says. “Even if you evaporated a big chunk of ocean it would just rain back out, because the water vapor would radiate away more thermal energy than it absorbed through sunlight. Our new calculations show that a water vapor–rich atmosphere absorbs more sunlight and lets out less heat than previously thought, enough to put the Earth into a runaway from which there would be no return.”
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So, until a very recent article, the common wisdom among climate and planetary scientists was that we were safe from runaway warming. It is only this new article that suggests such a thing might be possible.
So, once again, your contention is the product solely of your imagination and your ignorance.
Do you read your own posts???
"...enough to put the Earth into a runaway from which there would be no return.”
Do you read your own posts???
You're such a lying, dipshit. You linked to the place in the article where the AGWCult claims there is a runaway Greenhouse effect
Are you really THAT FUCKING STUPID?????
Damn, change that button to ...FS