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It very much is theory. The slow, gradual increase in temperatures through the last century is a fact,
but for one to extrapolate this data, especially with the known incosistencies of weather throughout history, is unwise.
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Global Warming is the increase in mean temperatures over the last century.
The IPCC's latest report, based on their weather models, indicates that it's very likely that the industrial contribution to global warming is significant.
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The theory of global warming causing ocean currents to change thus resulting in an ice age is well established. Most scientists who study the climate agree that is what happened to set off the last ice age. The disagreement is how much is needed to trigger the event.Originally posted by SpencerH
What trend would that be? Dont get me wrong, I'm for reducing air-pollution, but "global warming" is just a theory (and not a very good one). Maybe the doomsayers of the 1970's (that were every bit as qualified as the present day variety) who predicted another ice-age caused by greenhouse gases, were correct
Try http://wordforge.net/index.php for discussion and debate.Comment
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Well, we are in an "ice age" in that we have icecaps. Supposedly there were periods in the not-so-distant past (geologically speaking) with no icecaps.(\__/) Save a bunny, eat more Smurf!
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Damn Bush and his his refusal to sign that Environmental agreement in Kyoto
Look what he has done!
Do we need any more evidence to impeach him?Comment
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I assume you're talking about the "hot house Earth" senerio. The last one of those (which I can remember hearing about while getting my degree in geology) was around 100 million years ago which isn't very recent even by geologic terms. No, we're talking about current areas covered by the Ross Ice shelf being ice free in the 1750s thus we might consider the melting of the Ross Ice shelf to be a resumption of the status quo rather then an over all warming event.
The theory of global warmiung causing a global ice age has to do with increased evaporation of upper most ocean layers (warmest layers) becoming denser due to the saturation of salt and desolved solids thus leading to a "thermal inversion" meaning they dive under colder water rather then sit on top. That would mean a change in global ocean currents and instead of warm tropical currents heading north south (and warming the higher latitudes) we'd see an east-west trend in currents (meaning tropical heat would stay in the tropics instead of warming places like Europe & Korea/Japan.
Boom, instant accumulation of snow in the north and south leading to advancing ice sheets and a self reinforcing system towards a global ice age.
Try http://wordforge.net/index.php for discussion and debate.Comment
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how would a system like that ever come to an end? by end i mean how would it ever warm up again? It seems like that type of ice age would go on forever."I bet Ikarus eats his own spunk..."
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Kramerman: IIRC, the earth was covered with ice COMPLETELY for 5-6 million years, some 650million years ago.
IIRC, vulcanic erruptions opened it up. something gaseous, anyway.
On topic: my air pollution proffessor is not a believer in global warning, though he admitted that most of the scientists do think that this is the correct prognosis.Comment
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our atmosphere is only like, .01% carbon dioxide (which apparantley causes the warming).
The Mars atmosphere is full of the same stuff, and its ****ing freezing over there.eimi men anthropos pollon logon, mikras de sophiasComment
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Originally posted by Azazel
"full of the same stuff"?
don't laugh at me and not have to decency to explain your self!
eimi men anthropos pollon logon, mikras de sophiasComment
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ok, sorry.
I am not aware of the amounts of the CO2 in the Martian atmosphere, but in any case, since the martian atmosphere is bordering the non-existant, in relation to other atmospheric planets in the solar system, I think we can ignore it's effect.
On the other hand, the blocking properties of IR radiation by the CO2 molecules are scientifically proven.
However there are plenty of places where all of this CO2 can go. I'd bet on the oceans.Comment
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Chaos theory says that at a certain point, increases in a stable system will have unpredictable results. One possible result of global warming is that we have hotter summers and colder winters. Another is that we have milder winters and hoter summers or milder summers and milder winters. We could even end up tipping into a new ice age if warming stops the global conveyer current.Christianity: The belief that a cosmic Jewish Zombie who was his own father can make you live forever if you symbolically eat his flesh and telepathically tell him you accept him as your master, so he can remove an evil force from your soul that is present in humanity because a rib-woman was convinced by a talking snake to eat from a magical tree...Comment
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I am not familiar with Chaos, so I cannot comment.
on an unrelated note: do you people use Potassium Salt as a substitute for Table salt? how does it taste?Comment
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but Mars has no athmosphere like mother earth has!our atmosphere is only like, .01% carbon dioxide (which apparantley causes the warming).
The Mars atmosphere is full of the same stuff, and its ****ing freezing over there."An archaeologist is the best husband a women can have; the older she gets, the more interested he is in her." - Agatha Christie
"Non mortem timemus, sed cogitationem mortis." - SenecaComment
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oh and Btw, here in Belgium, winters have become MUCH milder compared to just 10-15 years ago
and, summers usually don't have as much hot days as there used to be... unfortunately, the rain is still omnipresent and i suppose that'll stay for another 100 years!"An archaeologist is the best husband a women can have; the older she gets, the more interested he is in her." - Agatha Christie
"Non mortem timemus, sed cogitationem mortis." - SenecaComment
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