Global warming was already happening...?

If you have a look for some info on the LGA (last glacial maximum) you can get an idea of timescales. We're talking thousands of years at the most extreme levels.
 
The Mad Rapper said:
Can you give me an idea of the time scales? I think this is what I am struggling to grasp. Would it be gradual or sudden? What causes it?
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That all depends on which theorys you want to look at.

Anything from the shut down of the gulf stream due to fresh water. Which could send us into an ice age in as little as 3 years. To research being carried out on limestone. That shows a past period of extremely high co2 levels yet we where in a deep ice age. Theory being that once you reach a certain level of co2. The heat is reflected or trapped in high atmosphere. Leaving the inner atmosphere extremely cold.

Like all climate change. There are a million and one theorys. All with different time periods and all with different outcomes.
 
AcidHell2 said:
That all depends on which theorys you want to look at.

Anything from the shut down of the gulf stream due to fresh water. Which could send us into an ice age in as little as 3 years. To research being carried out on limestone. That shows a past period of extremely high co2 levels yet we where in a deep ice age. Theory being that once you reach a certain level of co2. The heat is reflected or trapped in high atmosphere. Leaving the inner atmosphere extremely cold.

Like all climate change. There are a million and one theorys. All with different time periods and all with different outcomes.
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Interesting.

Wasn't that the basis for a movie? The North Atlantic current switching off I mean. Is that happening now?
 
If the north atlantic current suddenly ceased, cooling would be observed but I think that it's agreed it wouldn't be as dramatic a stop, there'd have to be a process slowing the current gradually rather than it just stopping one day, thats a big problem with the premise of that movie.
 
Can't remember where I heard this, probably down at the pub or something...

The amount of co2 pollution we've created (since human existance) doesn't even come close to how much Co2 is released when a volcano erupts. If that's true, it kinda put's it into abit of perspective doesn't it?

Or was that drunken pub talk :p.
 
OtherSide said:
Can't remember where I heard this, probably down at the pub or something...

The amount of co2 pollution we've created (since human existance) doesn't even come close to how much Co2 is released when a volcano erupts. If that's true, it kinda put's it into abit of perspective doesn't it?

Or was that drunken pub talk :p.
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I'm sure it means a super volcano such as the ones at yellow stone park, because if you've seen a volcano errupt you can see how much gas it emitts then compare that to the billions of cars, homes, factories ... you get the point :P
 
Comparison of CO2 emissions from volcanoes vs. human activities.
Scientists have calculated that volcanoes emit between about 130-230 million tonnes (145-255 million tons) of CO2 into the atmosphere every year (Gerlach, 1999, 1991). This estimate includes both subaerial and submarine volcanoes, about in equal amounts. Emissions of CO2 by human activities, including fossil fuel burning, cement production, and gas flaring, amount to about 27 billion tonnes per year (30 billion tons) [ ( Marland, et al., 2006) - The reference gives the amount of released carbon (C), rather than CO2, through 2003.]. Human activities release more than 130 times the amount of CO2 emitted by volcanoes--the equivalent of more than 8,000 additional volcanoes like Kilauea (Kilauea emits about 3.3 million tonnes/year)! (Gerlach et. al., 2002)
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Hmm, so volcanoes emit a tiny proportion of CO2 relative to our own emissions. I'd never pondered exactly how much they would release but that figure is less than I might have imagined.
 
Fusion said:
Hmm, so volcanoes emit a tiny proportion of CO2 relative to our own emissions. I'd never pondered exactly how much they would release but that figure is less than I might have imagined.
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That's only yearly average. i imagine a one of large eruption would change that figure massively.
 
cheets64 said:
Earth has a cycle of heating up and cooling down, but seeing as the passed 100 years we have been burning carbon dioxide and the population booming, its only a matter of time probably long before we are all dead when we find out if we have sped up the global warming from out industries.
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we wont all die though, we've got enough tech to keep some of us alive until the atmosphere pretty much boils off.
 
Global Warming = Earth Evolution

The Earth get's really hot and then it goes really cold, then i get's really hot and then it get's really cold.

There is nothing we can do to stop it.

It's common knowledge that the Earth is in the 'Green Zone' in the our Solar System which is why we have life and other planets here don't. We are just far enough from the Sun to not be too hot or far away enough to be really cold BUT as everyone should know the planets are slowly getting closer (though this is happening VERY VERY VERY slowly). So we are getting closer to the sun which is why it will get hotter and hotter but it won't happen for millions of years.
 
There's also new evidence that the ice shelves are melting due to underground volcanic activity, as well as increased air temperatures.

Sea level is goign to rise, weather patterns will change. There is nothing we can do about this. It's just we are speeding it up. It really is a lost cause. But there are plenty of good reasons to go green.
 
Abraham said:
google George Carlin - The planet is fine, my favourite take on global warming, can't link directly though
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Hah hah, nice...

George Carlin: Saving the Planet?? said:
The planet has been through a lot worse than us. Been through all kinds of things worse than us. Been through earthquakes, volcanoes, plate tectonics, continental drift, solar flares, sun spots, magnetic storms, the magnetic reversal of the poles...hundreds of thousands of years of bombardment by comets and asteroids and meteors, worlwide floods, tidal waves, worldwide fires, erosion, cosmic rays, recurring ice ages...And we think some plastic bags, and some aluminum cans are going to make a difference? The planet...the planet...the planet isn't going anywhere. WE ARE!
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last time i checked it was still cooler than the warm period in the medieval era. if the earth is warming (which most of us would agree on) it's certainly not being affected in any great way by us.
 
CO2 levels have been higher in the past.

Absolute temperatures have been higher in the past.

Yet life survived and we are here as a result.

I gave up trying to reason with the green lobby, they seem just as misguided as religious folk.
 
Yamahahahahaha said:
CO2 levels have been higher in the past.

Absolute temperatures have been higher in the past.

Yet life survived and we are here as a result.

I gave up trying to reason with the green lobby, they seem just as misguided as religious folk.
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i'd say more misguided, because the evidence that global warming is natural and there is very little we can do to influence it either way is staring them in the face and they just overlook it, whereas there's very little contrary evidence for a God/supernatural creator of some sorts.
 
If you ask me, it's the trees that are slacking. All them green things out there that are supposed to be inhaling this CO2 stuff just aren't cutting it anymore. I blame that on the deforestation efforts of the Asians and Europeans thousands of years ago. ;)

Get rid of those gravel gardens (ooohh, they're so much easier to maintain!) and grow some grass, plant some trees around your house, and quit complaining.

And if those punks in California would quit burning all their forests down every year, that would help some too. They're concentrating so much on emissions from their automobiles, yet they keep burning down all their forests. One day they're going to heat up the ground so much they'll crack the crust of the Earth, drift into the Pacific and sink. That'll learn 'em.
 
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