Global Warming Felt By Space Junk and Satellites
An anonymous reader writes in with a story about another side effect of increased carbon dioxide in the atmosphere. "Rising carbon dioxide levels at the edge of space are apparently reducing the pull that Earth's atmosphere has on satellites and space junk, researchers say. The findings suggest that man made increases in carbon dioxide might be having effects on the Earth that are larger than expected, scientists added... in the highest reaches of the atmosphere, carbon dioxide can actually have a cooling effect. The main effects of carbon dioxide up there come from its collisions with oxygen atoms. These impacts excite carbon dioxide molecules, making them radiate heat. The density of carbon dioxide is too thin above altitudes of about 30 miles (50 kilometers) for the molecules to recapture this heat. Cooling the upper atmosphere causes it to contract, exerting less drag on satellites."
So global warming has nothing to do with it? It's all about the carbon dioxide buildup?
The process cool the upmost strata, but keep heat inside. RTFA
Tomorrow is another day...
So you're saying hot grits are not cool?
And did you exchange a walk on part in the war for a lead role in a cage? - Pink Floyd.
That's because you like a number of people think that CLIMATE CHANGE only causes warming. It causes a rougher cycle of warmer highs and colder lows. Overall it causes the planet to warm, but the effects felt are not always to warm.
On the other hand, if this might effect american's TV channels perhaps we can get the majority of people in the US to start believing in science....
Ok maybe not, but a boy can hope.
Does it really surprise you that CO2 reduces the temperature away from the surface of the planet? Cannot you see that is energetically required for the planet to increase in temperature due to the greenhouse effect?
No (of course you can see this). You have simply turned off your brain because you do not want to believe in something. Please: stop talking before you stop thinking.
Your attempt to equate "cooling of upper atmosphere" to "global cooling" is cute.
http://www.washingtonpost.com/national/health-science/world-on-track-for-nearly-11-degree-temperature-rise-energy-expert-says/2011/11/28/gIQAi0lM6N_story.html
http://globalwarming.berrens.nl/globalwarming.htm
Because there's no extra heat coming in from the sun (indeed, slightly less), but because the CO2 is trapping heat in the lower atmosphere, the heat input to the upper atmosphere is reduced.
And what happens when heat input is reduced?
Cooling.
What happens in the lower atmoshere, where the heat input is increased?
Warming.
Indeed, one of the fingerprints that shows it ISN'T the sun doing it is the cooling upper atmosphere: in a warming sun, the entire atmosphere is being warmed because the heat input and throughput is increased.
Whereas the fingerprint of a greenhouse effect is that there is no extra input, but the throughput has changed.
In other words, this is yet more evidence of AGW.
Oh, no, hell will freeze over after all: http://www.theregister.co.uk/2012/11/09/peat_ice_age_coming_only_co2_can_save_us/
Excuse me, but please get off my Pennisetum Clandestinum, eh!
I thought that CO2 was heavier than air, so there shouldn't be any of it in the upper atmosphere.
(at least not the stuff emitted by burning carbon based stuff at ground level. There could be some Methane at high altitude that gets converted to CO2 by solar radiation., and maybe jet exhaust and large volcanic eruptions.
Imagine a ball, now imagine it contracts... the ball get smaller, right? This means less atmosphere radius and thus more satellites sits above it. Someone correct me if i am wrong.
Tomorrow is another day...
You forgot to factor in gravity and density.
Tomorrow is another day...
When 2 liquids can dissolve with each other the weight of the molecules is pretty irrelevant. How do you think alcohol and water mix when water is so much denser? You don't see the alcohol sink to the bottom in a wine bottle left for decades for example.
They have a global warming potential thousands of times higher than CO2 and are being released into the atmosphere in large quantities. HCFCs replaced CFCs because they don't react with ozone so don't destroy the ozone layer. The downside of that is they don't react with ANYTHING in the atmosphere so no one has an idea how they will ever be removed. This is a potentially major issue which isn't being taken seriously enough.
Define the average distances, temperature and densities for the following layers of the Earth's atmosphere:
Troposphere, Stratosphere, Mesosphere, Themosphere, Exosphere.
Bonus points if your BS detector notices the temperature does not uniformly trend with radius.
Even more bonus points if you can explain why, though I figure that your BS detector didn't take basic physics or slept through that too.
The world is more complicated than first order theory. Adapt or die.
So global warming has nothing to do with it? It's all about the carbon dioxide buildup?
Why are you still trolling this bullshit?
It's all about burning fossil fuels. This has many effects, of which global warming is the most dangerous to humans right now, but raising the dangers of space junk is another bad effect.
What you are trying to imply is like saying cigarettes have nothing to do with lung cancer, because there are people who die of emphysema as well.
Go away, oil industry shill!
Rising carbon dioxide levels at the edge of space are apparently reducing the pull
Isn't it more of a push?
systemd is Roko's Basilisk.
What would the world be like today if Humans in the 1300s could measure climate? Would they have banned draft and livestock animals because of their methane production? Would they have banned using candles and camp fires and other CO2-producing activities?
Since, you know, when discounting Michael Mann's fabricated data, it was warmer in the 1300s than it is now, without the help of any modern technology..
That's because you like a number of people think that CLIMATE CHANGE only causes warming. It causes a rougher cycle of warmer highs and colder lows. Overall it causes the planet to warm, but the effects felt are not always to warm.
I imagine flyingfsck's BS detector is pegging on this bit of rhetorical dodge. Normal people would call this the much more accurate "ANTHROPOGENIC GLOBAL WARMING" not the vague "CLIMATE CHANGE".
We add an additional 4% each year and there is nothing to balance that. We can also look at isotope ratios (fossil fuels are ancient carbon). It is our CO2.
http://www.skepticalscience.com/human-co2-smaller-than-natural-emissions-intermediate.htm
Take a walk in a redwood forest and see a cross section from a tree that was 2000 years old. It is obvious to even the simple minded that the rings on the tree show large and long cycles of strong grow and slow growth...none of those cycles of climate change in the past were due to man.
jsut athnoer menagiensls ltitle psrhae for you to dcoede. Why do we wtsae our tmie dnoig tihs?
Obviously. Are you merely illiterate, or just plain thick?
If those predictions are true, then we are fucked. FUBAR
"IF".
If we won't credit carbon dioxide with these extra superpowers, then the terrorists win.
Tubby or not tubby. Fat is the question
...the sky is literally falling
that cant be possible. I think God placed that tree there to test our faith.
There is no contradiction.
Go put your hand behind your fridge - notice that the iron grid there is quite a bit warmer than room temperature ?
But the inside of the fridge is cold...
See to make the fridge cold, we have to MOVE the heat inside it somewhere, that grid is where it ends up being radiated away from.
The grid gets warmer, so the fridge can get colder.
Is that a contradiction too ?
Unicode killed the ASCII-art *
When you take energy from the oxygen molecules and the radiate it, you don't get to pick a direction. Some will come down, some will go out to space. The net effect (of this phenomena) is cooling.
No, no, the CO2 from "volcanoes and stuff" is a factor, I'm sure.
But we should probably deal with the 99% of CO2 that comes from humans burning stuff, before moving on to the volcanoes releasing the other 1%.
So to sum up the summary, global warming is causing cooling that is reducing gravity and making satellites more efficient.
"Global warming" has "a cooling effect" that is "reducing the pull that Earth's atmosphere has" and "exerting less drag on satellites."
What great news!
Not really. GW is caused by conversion of high energy photons (light) into low energy photons (heat). If CO2 increases this conversion rate, then the result should be increased warmth at all levels of the atmosphere where increased concentrations of CO2 are present. This observation throws the fundamental axion of AGW into doubt--something I have been talking about for some time, as the heat capacity of CO2 is slightly below the average of other atmospheric gases, meaning that an increased fraction of CO2 should cause very minor cooling rather than warming. This article (or summary) seems to imply that this is the case. If there is global warming going on, it is likely to be from a different source than CO2 (I propose water vapor as the primary driver, as it's continuous output rise matches the slow rise in CO2 over relevant time scales, but I am open to alternative hypotheses). If that is the case, then REJOICE, because if we can find it, we can fix it. CO2 is the only one that we can't fix without a radical overhaul of worldwide energy infrastructure (which we would still benefit from, but which should be motivated by economic concerns rather than the threat of impending doom).
Your ability to explain any phenomena with the same cause is a strong indication that you are not a rationalist.
What sort of idiot eats chilli from a plate. I think we need an independent corroboration of this study. Has it been peer-reviewed by an acceptable scientific journal?
I'm Canadian eh. Global warming means that one can farm the tundra in Canada and Russia and will enable the planet to sustain a few billion more people. It is generally a good thing.
Excuse me, but please get off my Pennisetum Clandestinum, eh!
The grid gets warmer, so the fridge can get colder.
Is that a contradiction too ?
No, it is merely a phenomenon caused by an omniscient deity to test the faith of their believers -- Now THAT'S a contradiction.
Stop right there. CO2 does not convert light into infrared. It absorbs infrared. The conversion from visible light to infrared occurs when the earth absorbs visible light, heats up, and subsequently re-emits the heat as infrared waves.
Re-read TFA (if you really read it the first time) and note that this is about the increased CO2 in the upper atmosphere gaining energy from collisions with O2, and re-emitting that energy as infrared, much of which makes it into space, since it is happening above most of the atmosphere. Has nothing to do with trapping heat from the sun that is causing gloabl warming, other than both involve CO2 & infrared.
FYI, they are not "blaming" global warming for the reported cooling of the uppermost layers of the atmosphere, they are demonstrating that the increased CO2 measured at those levels has a cooling effect that causes that layer to contract.
Doesn't anyone in the climate warming business know anything about the basic physics of gases? To paraphrase TFA for brevity: CO2 'collisions' with O2 molecules are exciting the CO2 molecules making them radiate heat??? It is basic physics that ALL gases in the upper atmosphere are constantly colliding at a rate proportional to their temperature and are constantly radiating (and absorbing) photons at frequencies determined by their molecular structure. Both O2 molecules and the very scarce CO2 molecules (and the far more abundant N2 molecules) are continually radiating heat into space. And then we read: "The density of carbon dioxide is too thin above altitudes of about 30 miles for the the molecules to recapture this heat" which is utterly meaningless. The only way that anything about this article makes even a tiny bit of sense is if we assume that the author is attempting to claim that the upper atmosphere is cooler as a result of heat being blocked by carbon dioxide in the lower atmosphere and that is, itself, a ridiculous claim as the planet heat balance between the heat arriving and the heat being radiated is always very nearly in balance or the planet would overheat in a matter of days as a result of the massive amounts of heat arriving and leaving every day. A change in the atmospheric heat flux sufficient to significantly change the temperature of the planet's outer atmosphere on a short term basis is obviously from something other than carbon dioxide and is probably due to a change in solar radiation or a change in interstellar radiation or some other less understood effect.
CO2 is essentially transparent to visible light (your high energy photons). The visible light is absorbed (or reflected) by things that aren't transparent to it. That absorbed energy is then emitted sooner or later as energy in wave lengths according to Planck's law, generally in the infrared range at normal Earth temperatures. CO2 is not transparent to certain wave lengths of IR radiation so it captures it. The heat capacity of CO2 has nothing to do with it, it's strictly a matter of radiative physics.
It's impossible for water vapor to drive global warming. The level of of water vapor in the atmosphere is strictly limited by temperature. If the feedback from additional water vapor were high enough to drive global warming it would have driven the Earth to get so hot the oceans would boil and totally evaporate long ago.
The physical world is not always as simple as you'd like it to be.
AC didn't deserve the Troll rating. In a sense the sky really is falling because the upper atmosphere is contracting. The top of the sky is getting closer to the surface of the Earth. I thought it was a nice turn of phrase.
We have more to lose if the predictions are true and we don't try to do anything about it than if they are not true and we do try to do something about it. The first situation could be existential, the second merely financial and we get a cleaner world.
Waving away criticism by saying "it's complicated" is not rational. This is a curiosity stopper, and should be avoided.
Ok, do you want me to write a tl;dr reply? The fact is warming of the lower atmosphere and cooling of the upper atmosphere is not contradictory when it's caused by an increase in greenhouse gases. If the warming were caused by increases in solar radiation then both the lower and upper atmosphere would warm. All it takes is some physics to understand why.