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| quote: | Originally posted by Magnetonium
models suggest that changes in the Sun's energy output may have caused a small cooling at that time, but it is still unclear how these small changes in solar activity may have triggered such a widespread cooling"
LOL, yeah, thats so confirmed. |
Nothing has to be entirely "confirmed" in this particular instance. What's clear, however, is that you have not offered much of any verifiable alternative theories at all to explain, well, to be honest I'm really not sure what on earth you are explaining anymore. Perhaps a summary of points on what you're arguing is in order at this point?
| quote: | | Look - I am not going to waste hours digging up all the references, professor lectures, book links and their references - the point is, if you wish to not believe it you'll always find excuse for discrediting the information. So I wont bother. |
That's a pretty laim excuse to bow out of an argument on a debating forum. I took some time to support my assertions, and admittedly climatology is not my specialty by any stretch. Yet it took a little googling and an email or two to a fellow researcher at KU whom I spent some time doing undergrad. biol. stuff with to find some rather straightforward answers.
Of course it's your perogative, but it doesn't help your case much.
| quote: | | The books I'll recommend you to read are EARTH IN THE BALANCE by Al Gore and LAST HOURS OF ANCIENT SUNLIGHT by Thom Hartmann, as well as ice core samples information, historic records, look for professor discussion evidence, etc. |
Perhaps a couple of quotes from these authors in their books would help support your arguments, then? With my current school-load plus outside leisure reading, I really haven't a heckuva lotta time to skim through these books. I'm sure they're quite fascinating, and what's even stranger is I'd probably agree with nearly everything they are saying.
What I'm trying to figure out right now, however, is how what they are saying is somehow in disagreement with what I am arguing, and how it somehow bolsters your argument. Perhaps you could explain this a bit more?
| quote: | | Also, havent you noticed that rotation of the Earth, the spin / axis, which has its own cycle, "equinoxes", have a huge role in climate change, like like winter/summer transition. And thats proven. My points like these were previously ignored - |
Incorrect. I believe we covered that, and the myriad of flaws in the argument you provided with your link:
http://en.wikipedia.org/wiki/Milankovitch_cycles
I believe I also supplied this to support my argument as well:
| quote: | These are not small problems with the hypothesis. They are quite vast. These problems, especially the ~100kyr (95kyr+120kyr+400kyr) eccentricity problem are big enough to be disproven by the lack of their own merit. Furthermore, this paper by Muller and Macdonald:
http://muller.lbl.gov/papers/nature.html
demonstrates that there is little to no evidence of a 95kyr, 120kyr or a 400kyr frequency in the climate data. There is, however, a very narrow 100kyr frequency. Putting this together with the fact that the eccentricity cycle is the weakest of the Milankovitch cycles seemingly points rather convincingly that Milankovitch was not a cause of the ice ages.
The 100kyr frequency, however, does point to another source, the sun's magnetic cycles:
http://www.sciencedaily.com/release...20607073439.htm
You'll notice in that paper that a correlation between Be10 and O18 in that above paper improves when it is corrected for geomagnetic variation, which gives more credence against a fallacious correlation. |
So by no means did I ignore your point. I simply did not agree with it and supported my reasons as to why.
| quote: | | I also like to add thatt global glaciation kills no less species of life than global warming - and global warming at least causes life explosion - its just claimed that its going to negatively affect our lifestyles. |
What on earth are you arguing here? Am I to understand that you are saying we shouldn't be worried about global warming because, in comparison to global glaciation, no less species are killed off? Are you being serious? I really don't want to misunderstand you here, so could you perhaps explain a bit more on this comparison and how that supports your point?
| quote: | With further CO2 cuts in our atmosphere, there will be increase of nitrogen and decrease of oxygen because less plants will convert CO2 to oxygen, which will eventually lead to unbreathable air and kill us all. Earth was used to be at one point made up of up to 35% oxygen. today's 0.4% CO2 content is way too low:
"Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen, 21% oxygen, 0.93% argon, 0.04% carbon dioxide, and trace amounts of other gases, in addition to water vapor. This mixture of gases is commonly known as air."
http://en.wikipedia.org/wiki/Earth%27s_atmosphere
Buddy, here's another quote from that same link, all referenced and common sense, by the way:
"Photosynthesising plants would later evolve and convert more carbon dioxide into oxygen. Over time, excess carbon became locked in fossil fuels, sedimentary rocks (notably limestone), and animal shells. As oxygen was released, it reacted with ammonia to release nitrogen; in addition, bacteria would also convert ammonia into nitrogen. But most of the modern day level of nitrogen are due mostly to sunlight-powered photolysis of ammonia released steadily over the aeons from volcanoes.
As more plants appeared, the levels of oxygen increased significantly, while carbon dioxide levels dropped. At first the oxygen combined with various elements (such as iron), but eventually oxygen accumulated in the atmosphere, resulting in mass extinctions and further evolution. With the appearance of an ozone layer (ozone is an allotrope of oxygen) lifeforms were better protected from ultraviolet radiation. This oxygen-nitrogen atmosphere is the "third atmosphere". 200 - 250 million years ago, up to 35 percent of the atmosphere was oxygen (bubbles of ancient atmosphere were found in an amber).
This modern atmosphere has a composition which is enforced by oceanic blue-green algae as well as geological processes. O2 does not remain naturally free in an atmosphere, but tends to be consumed (by inorganic chemical reactions, as well as by animals, bacteria, and even land plants at night), while CO2 tends to be produced by respiration and decomposition and oxidation of organic matter. Oxygen would vanish within a few million years due to chemical reactions and CO2 dissolves easily in water and would be gone in millennia if not replaced. Both are maintained by biological productivity and geological forces seemingly working hand-in-hand to maintain reasonably steady levels over millions of years."
Come on, now, dont bullshit me. |
I'm really trying hard to understand exactly what you are arguing here. You gave me a summary of historical carbon dioxide formation, and a very brief summary of the carbon cycle in of itself. How on earth does this in any way negate the rising CO2 levels in parts per million (ppm), the highest levels in 650k yrs, as well as known rising CO2 levels in the ocean (our greatest carbon sink)? I don't disagree with any of these points in that last post from Wikipedia (do you utilize any other sources, btw?), what I don't understand is how that negates any of my previous points. Please exlain in detail. And please don't be afraid to use other scientific sources to support your contentions.
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Whence September dusk grows crisper still,
with leaves all crimson conquered,
I yearn to shout,
and dance about,
and stick pickles in my honker...
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