23-05-2005 14:38									#31
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Maybe we could be saved by a massive eruption of the Krakatoa.

	23-05-2005 15:43									#32
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quote: Originally posted by Dissident bump, you'd think more people would be concerned about the loss of all life on the planet.

Why worry about alarmist psuedo-science which has zero chance of occuring? The Earth has been around for 4.66billion years and has experienced massive temperature swings yet we've never had a run away green house effect because the Earth has built in buffers. Venus has a massive green house effect because it is half the distance from the sun and thus gets four times the energy.

Any man made global warming won't get any where near (not even by an order of magnitude) of such a temperature shift.

	23-05-2005 17:47									#33
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quote: Originally posted by Kuciwalker Except that increased cloud cover will reflect a lot of light from the sun.

Depends on wich kind of clouds that would be the result.

http://www.nasa.gov/vision/earth/en...rth_energy.html

	23-05-2005 20:17									#34
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quote: Originally posted by Oerdin Why worry about alarmist psuedo-science which has zero chance of occuring? The Earth has been around for 4.66billion years and has experienced massive temperature swings yet we've never had a run away green house effect because the Earth has built in buffers. Venus has a massive green house effect because it is half the distance from the sun and thus gets four times the energy. Any man made global warming won't get any where near (not even by an order of magnitude) of such a temperature shift.

Venus is three times hotter than it should be without a greenhouse effect. It's surface temperature is hotter than Mercury.

	23-05-2005 20:26									#36
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The surface ocean temp here gets up to 90° F every summer here. It's why we have tropical storms.

	23-05-2005 21:10									#37
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quote: No one is saying this will happen overnight...

Techumseh is certainly implying this with his article title.

	23-05-2005 21:55									#38
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quote: Originally posted by Geronimo we essentially 'short circuit' the carbonate cycle when we burn fossile fuels.

No we are not. Fossil fuels make up a very tiny amount of the "buried carbon". nearly all of it is in the form of limestone.

	23-05-2005 22:16									#39
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I thought limestone was the fossilized remains of diatoms.

	23-05-2005 22:17									#40
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So could humans survive severe climate changes. If given enough time I think surely we could adapt. It may not be all green and pretty like it is now but if given enough time we could build domes.

	23-05-2005 23:11									#41
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"So could humans survive severe climate changes. If given enough time I think surely we could adapt. It may not be all green and pretty like it is now but if given enough time we could build domes."

As long as people don't have to give up their SUVs this will be just fine.

	23-05-2005 23:19									#42
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I'm looking forward to Wampa hunting on my Tauntaun.

	24-05-2005 00:03									#43
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quote: Originally posted by Az quote: No one is saying this will happen overnight... Techumseh is certainly implying this with his article title.

Actually, it's suggested in the third article I referenced.

Still, I'm fascinated by the reaction to this question. Many don't treat it seriously at all. What if I COULD prove it, would your reaction be different?

	24-05-2005 00:40									#44
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quote: Originally posted by techumseh Venus is three times hotter than it should be without a greenhouse effect. It's surface temperature is hotter than Mercury.

Yes, and it's not comparable to earth for several reasons. The main one being that surface maps indicate substantial geologically recent resurfacing due to volcanin activity on a scale far in excess of anything feasible on earth. This is apparently the largest source of greenhouse gasses by far.

The second major difference is proximity to the sun - that not only exacerbates the speed with which tidal locking has taken place and seismic/volcanic activity due to tidal friction, but the amount of infalling solar radiation is and has been so much higher than on earth that Venus likely never had the opportunity to develop geographical, geological or biological mechanisms that would provide the sort of dynamic climate balance that has been demonstrated over earth's history.

	24-05-2005 06:52									#45
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I think Australia will have to revise its harsh immigration system in preparation for entire populations of displaced south pacific islanders landing on our beaches as their islands are submerged.

Accepting them is the least we can do for not ratifying the Kyoto protocol.

Personally I'd prefer not having to adapt. Maybe we should be trying to avert the situation before its too late. I guess that makes me a pinko commie nutjob...

	24-05-2005 09:49									#46
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quote: Originally posted by chegitz guevara I thought limestone was the fossilized remains of diatoms.

basically its a mix of calcareous protist shells. In the Precambrian there was much less in the way of biomineralization than today, most of the limestone just precipitated inorganically. The start of widepread biomineralization (I think it was about 1 billion years ago during the protistian radiation if I remenber right) just made the process more effecient (and may have caused the 3 "Snowball Earth" events in the late Precambrian). Also, the spread of the first land plants made the whole cycle more efficent by increasing the weathering rates, causing the huge drop in atmospheric CO2 in the Carboniferous (with some help from the erosion of the freshly risen southern Appalachians and Urals), and bringing the oxygen levels up to 35%, the highst in Earth's history.