Global Warming
- Thread starter MrBishop
- Start date
catocom
Well-Known Member
eh, all we have to do is put all the rockets on one side of the earth, and push the orbit out a little farther.
what?
I figure that's more likely than getting everyone in the world to conserve.
chcr
Too cute for words
what?
I figure that's more likely than getting everyone in the world to conserve.
Equally likely, anyhow.
SouthernN'Proud
Southern Discomfort
We had ice ages before industrialization. The ice melted. Why?
catocom
Well-Known Member
SouthernN'Proud
Southern Discomfort
All natural causes then. No SUVs, no pollution, no man made or man controlled factors in play at all.
THIS IS NO DIFFERENT!!!!
Well, one difference. Back then, the village idiot was ostracized for the good of the group as a whole. This time, the village idiot spent 80% of the 1990s as vice president. Otherwise, this is no different. This too shall pass. The problem is we have a multitude of morons crying wolf, and people keep listening to them.
catocom
Well-Known Member
http://www.kn4lf.com/globalwarminglie.htm
here's some more, and talks about the 30 weather cycles within the other cycles.
here's some more, and talks about the 30 weather cycles within the other cycles.
SouthernN'Proud
Southern Discomfort
No more calls please, we have a winner.
Think about Puh hoe eh nix while getting all frosty? I'll stay inside instead.
Altron
Well-Known Member
I think the Milankovitch Hypothesis does a great job explaining it.
I'm just trying to recall some figures offhand, because I don't have the exact ones.
The tilt of the Earth's axis varies from about 21 degrees to about 24 degrees. This affects the seasons big time. With a small tilt, there's not much of a difference in day and night between summer and winter, so thus the temperature is pretty constant year round. With a larger tilt, that difference increases significantly. In our Northern winter, we are tilted about 23.5 degrees away from the sun, which puts us a bit farther away from it and makes the sunlight more diffused, because it's hitting us at an angle. In our Northern summer, we are tilted about 23.5 degrees towards the sun, which puts us closer (thus more light) and makes that light more direct, making things warmer.
Now, to go from 21 to 23 degrees takes about 20,000 years.
Then there's the eccentricity of the Earth's orbit (I think). At the moment, Earth is about 1% closer to the sun during Northern winter, and 1% farther away during Northern summer. This also varies in magnitude and is I believe a 100,000 year cycle.
I think the third one is precession of Earth's axis. Why it happens I don't know, but when something has a lot of angular momentum (i.e. 8,000 mile diameter sphere spinning at 1 rev/day) and a perpendicular torque is applied, the object precesses, which means it begins to spin in a perpendicular direction at the same time. That's another cycle that takes a long time.
Then once you add up all three of them, you get a model for predicting the global temperature. I saw one graph where they took the Milankovitch model and the actual data for the past large amount of time and that shit was dead on.
I'm just trying to recall some figures offhand, because I don't have the exact ones.
The tilt of the Earth's axis varies from about 21 degrees to about 24 degrees. This affects the seasons big time. With a small tilt, there's not much of a difference in day and night between summer and winter, so thus the temperature is pretty constant year round. With a larger tilt, that difference increases significantly. In our Northern winter, we are tilted about 23.5 degrees away from the sun, which puts us a bit farther away from it and makes the sunlight more diffused, because it's hitting us at an angle. In our Northern summer, we are tilted about 23.5 degrees towards the sun, which puts us closer (thus more light) and makes that light more direct, making things warmer.
Now, to go from 21 to 23 degrees takes about 20,000 years.
Then there's the eccentricity of the Earth's orbit (I think). At the moment, Earth is about 1% closer to the sun during Northern winter, and 1% farther away during Northern summer. This also varies in magnitude and is I believe a 100,000 year cycle.
I think the third one is precession of Earth's axis. Why it happens I don't know, but when something has a lot of angular momentum (i.e. 8,000 mile diameter sphere spinning at 1 rev/day) and a perpendicular torque is applied, the object precesses, which means it begins to spin in a perpendicular direction at the same time. That's another cycle that takes a long time.
Then once you add up all three of them, you get a model for predicting the global temperature. I saw one graph where they took the Milankovitch model and the actual data for the past large amount of time and that shit was dead on.
How does anyone know? Were there mercury or digital thermometers in 1299? 875? 4350BC?
SouthernN'Proud
Southern Discomfort
They know because they are [trumpet fanfare]SCIENTISTS[/fanfare]. The same folk who tell us all about the dinosaurs what used to run about 72 quidtrillion years ago. Back when we evolved from apes and beat stuff with clubs and dragged our wimmins about by the hair and said "og." The ones who love to tell how we exist because lightning struck a puddle of triptosillysaurus piss at the precise moment of barometric and electromagnetic perfection and caused a critter with a pseudopod to emerge what later became a monkey and shazam, here we are. They know because they have white lab coats and slide rules and clipboards. They got it all worked out on a series of 24 blackboards at Harvard in the math department, and X=pi. Don't question them, they gets a might testy when they have to speak to the common citizenry.
