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| Have AGW Predictions been scientifically verified to be true? |
| YES |
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43% |
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| NO |
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| Total Votes : 16 |
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mddorogi
Super Burner
Joined: 17 Oct 2006
Posts: 1115
Location: Ann Arbor, MI
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 Posted:Fri Oct 12, 2007 10:26 am Post subject |
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| Quote: | Humidity=Water Vapor=Largest GHG, as John Lennon says "Imagine"
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Yep. That's one of the positive feedbacks in AGW theory. Warmer air holds more water vapor, causing more warming.
Of course, the air could get warmer by other ways than CO2. It is thought that Venus formed with water like the earth did, originally, but since Venus is closer to the sun, enough water vaporized to elevate the temperatures beyond the boiling point of water. The oceans evaporated and over time, the water vapor was disassociated by ultraviolet light in the upper atmosphere, and the hydrogen escaped. CO2 could no longer be bound up in rocks without H20, so over time, all the CO2 was outgassed by volcanic activity.
The result is that Venus has no water, and an atmosphere of almost all CO2.
Of course, that's just the standard theory, doubtlessly incomplete, but it is fascinating. So there's this orbital band where a water dominated world can exist, and we're happily in it.
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Mark
Dell Point Europa |
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Harthvader
Regular Burner
Joined: 03 Dec 2006
Posts: 105
Location: Ames, IA
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| Posted:Fri Oct 12, 2007 12:33 pm Post subject |
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| Random Task wrote: | The Sun.
By the way.
Is a factoid something that looks like a fact, but in fact is not?
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Hey Random,
I use the word factoid mostly because I don't follow all of the scientific studies. Heck we all know that with theorectical science one could suspend an elephant by tying it's tail to a daisy growing on the side of 10,000 ft mountain.
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St Croix - Auburn
Use the Corn Luke! |
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mddorogi
Super Burner
Joined: 17 Oct 2006
Posts: 1115
Location: Ann Arbor, MI
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| Posted:Fri Oct 12, 2007 10:17 pm Post subject |
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| Quote: | Heck we all know that with theorectical science one could suspend an elephant by tying it's tail to a daisy growing on the side of 10,000 ft mountain.
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Yeah, and there's always the swallow carrying a coconut...
http://www.youtube.com/watch?v=Wxt8iLPm-70
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Mark
Dell Point Europa |
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Occam
Super Burner
Joined: 12 Feb 2007
Posts: 1441
Location: Toledo
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| Posted:Tue Oct 26, 2010 9:42 am Post subject |
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While some of these particular specific preditions were not central tenets of AGW, unforeseeable secondary effects of rapid climate change are expected and will become more defined in the coming decades.
Global Warming to Bring More Intense Storms to Northern Hemisphere in Winter and Southern Hemisphere Year Round
ScienceDaily (Oct. 25, 2010) — Weather systems in the Southern and Northern hemispheres will respond differently to global warming, according to an MIT atmospheric scientist's analysis that suggests the warming of the planet will affect the availability of energy to fuel extratropical storms, or large-scale weather systems that occur at Earth's middle latitudes. The resulting changes will depend on the hemisphere and season, the study found.
http://www.sciencedaily.com/releases/2010/10/101025152249.htm
Arctic Report Card: Region Continues to Warm at Unprecedented Rate
ScienceDaily (Oct. 22, 2010) — The Arctic region, also called the "planet's refrigerator," continues to heat up, affecting local populations and ecosystems as well as weather patterns in the most populated parts of the Northern Hemisphere, according to a team of 69 international scientists.
.....There is also evidence that the effect of higher air temperatures in the Arctic atmosphere in fall is contributing to changes in the atmospheric circulation in both the Arctic and northern mid-latitudes[that is us]. Winter 2009-2010 showed a link between mid-latitude extreme cold and snowy weather events and changes in the wind patterns of the Arctic, related to a phase of the Arctic Oscillation |
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Occam
Super Burner
Joined: 12 Feb 2007
Posts: 1441
Location: Toledo
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| Posted:Tue Dec 14, 2010 9:54 pm Post subject |
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Hot With Decades of Drought: Expectations for Southwestern United States
ScienceDaily (Dec. 14, 2010)
— An unprecedented combination of heat plus decades of drought could be in store for the Southwest sometime this century, suggests new research from a University of Arizona-led team. A 60-year drought like that of the 12th Century could be in our future. |
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