What would happen if we create super turbo engines and push our planet away from the sun so we would combat global warming!!!!
Originally posted by: BigJ
Stick your finger in your mouth. 2 degrees hotter is about 100F.
I think you mean 100C
Hahaha oops. I always seem to mix up stuff like that.
100C then 212F, 373L
clamum
Lifer
- Feb 13, 2003
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The reason Venus is so hot is because of its extremely dense atmosphere, and in fact its hotter than Mercury even though it's farther away from the Sun. If we were in Venus' spot with our planet it would not be that hot... just saying it might have to be closer.
I guess the question you should ask is how much temperture needs to be rise from sun to boil the surface on the earth. Distance will never change noticeably within the period of our generation.
geecee
Platinum Member
- Jan 14, 2003
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Also, Venus' atmosphere is primarily CO2. Scientists are linking global warming here on Earth to rising CO2 levels. If you consider that the CO2 content of our atmosphere is a fraction of 1%, then you'd have to conclude that Venus' atmosphere makes for one hell of a greenhouse! While distance to the Sun is a factor, that crazy CO2 concentration probably has quite a bit to do with the unusually high surface temps on Venus as well.
EDIT: If you look at Mars, you'll see that despite how much further away it is from the Sun, the temperature at some places and times is actually capable of supporting life, so in Venus' case, it's probably not just its distance to the Sun.
We should try to convert the CO2 to O2 and Carbon and see if we can get a balance on Venus.
hahahaa... too many Sci-fi books.
Jeff7
Lifer
- Jan 4, 2001
- 41,596
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Just the simple fact that Venus is about 50 million miles further from the sun than Mercury, and its surface is still a few hundred degrees hotter than that of Mercury, should tell you something about 1) the ability of an atmosphere to retain heat, and 2) the ability of dense CO2 to hold in heat.
But the question here was simply, how close would Earth need to be to raise the temperature of the oceans to the point where they'd boil away?
Now, how complex do we make this? Once they just start boiling, the humudity will increase considerably, which may serve to trap even more heat. At the same time, the atmosphere might become saturated, so the boiling point could rise. All kinds of fun stuff could happen.
Let's just assume, "Surface temp of 100C - how close would Earth need to be to reach this point."
And you know, I think that if I knew the average output of the sun, I could figure it out. Radiative energy's strength is 1/radius^2, where radius = distance from the emitter. But I'd also have to calculate the watts required to boil a cubic meter of salt water, and I have to do enough math problems for my classes, and I just don't feel like doing this.
There's plenty of solar energy available, at least above the clouds. Venus Express has reflectors around its solar cells to reduce the amount of light absorbed so as to help keep the probe cool.Originally posted by: DaShen
We should try to convert the CO2 to O2 and Carbon and see if we can get a balance on Venus.
Relevant note:
VEX's solar panels "deliver power of 821 watts in the Earth?s orbit and 1,468 watts in the Venusian orbit at end of mission."
Source
2Xtreme21
Diamond Member
- Jun 13, 2004
- 7,044
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You can use Stefan-Boltzman's law to determine what you want to know, I think:
Ts * sqrt( Rs / 2D) = Te
Ts = Temperature of sun = 5960 K
Rs = Radius of sun = 6.96x10^8 m
Te = Avg. temperature of the Earth = You want it to be 100C = 373.15 K
D = Distance from Earth to Sun
Rearranging you get:
( Rs / ( 2 * ( Te / Ts )^2 ) ) = D
( 6.96x10^8 m / ( 2 * ( 373.15 / 5960 ) ^2 ) ) = D
D = 8.88 x 10^10m
Our current distance is 1.5x10^11m, FYI... and Venus' is 1.082x10^11m.
Ts * sqrt( Rs / 2D) = Te
Ts = Temperature of sun = 5960 K
Rs = Radius of sun = 6.96x10^8 m
Te = Avg. temperature of the Earth = You want it to be 100C = 373.15 K
D = Distance from Earth to Sun
Rearranging you get:
( Rs / ( 2 * ( Te / Ts )^2 ) ) = D
( 6.96x10^8 m / ( 2 * ( 373.15 / 5960 ) ^2 ) ) = D
D = 8.88 x 10^10m
Our current distance is 1.5x10^11m, FYI... and Venus' is 1.082x10^11m.
AgaBoogaBoo
Lifer
- Feb 16, 2003
- 26,108
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We also need to factor in that the Earth rotates and so it needs to be hot enough that it can get boiling without cooling off so fast that it negates any increase in heat.
I like this question, but don't know enough to give a real answer.
I like this question, but don't know enough to give a real answer.
Dude, the ocean doesn't even need to boil.
If the earth's temperature as a whole even went up 5 degrees, we'd be some serious shiit beyond man's control. Global flooding due to ice caps melting, all ecosystems are completely thrown off the scale, hundreds of thousands of species would go to extinct from 5 degrees alone.
If the earth's temperature as a whole even went up 5 degrees, we'd be some serious shiit beyond man's control. Global flooding due to ice caps melting, all ecosystems are completely thrown off the scale, hundreds of thousands of species would go to extinct from 5 degrees alone.
- Dec 5, 2000
- 43,804
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no, i very specifically need the oceans to boil and evaporate. i really don't care much about what else happens, but boiling and evaporating is essential.
actually, if you can think of another way to make water all over the world disappear completely, let me know. the boiling seas thing seems to be the most logical way i can think of it happening, even though its not very logical to begin with, but i'm willing to hear all options.
LOL, reminds me of that 'how to destroy the earth' thing.
"You will need: a big heavy rock, something with a bit of a swing to it... perhaps Mars."
if we're talking 100 C then everything would die except for archaebacteria. They would be having a hay day, deep sea vents would probably be fine as well.
When a big enough section of ice caps melted it would destroy all humans. I would guess the tsunami would be about 10km tall across all of earth. look at the ones that happen in bays in Alaska---> 500m tall.
Mars is colder and further away than Earth, but its oceans boiled away.
Remember, both heat and pressure factor into the boiling point. You can boil cold water by lowering the pressure.
Remember, both heat and pressure factor into the boiling point. You can boil cold water by lowering the pressure.
I find that extremely hard to believe. That is higher than everest... it would pick aircraft out of the sky...
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