Originally posted by: abj13
Originally posted by: LegendKiller
Are you telling me that you are going to take a peak that is proven to be variable and somehow say that *WE* caused that peak, which has been happening for a good 10,000+ years and say that 70 years, or .7% of the time, was caused absolutely by man?
Well, since you like to cite a random graph from the Petit et al paper, why aren't you citing what is actually written in the paper?
"The extension of the greenhouse-gas record shows that present-day levels of CO2 and CH4 (360 p.p.m.v. and 1,700 p.p.b.v., respectively) are unprecedented during the past 420 kyr. Pre-industrial Holocene levels (280 p.p.m.v. and 650 p.p.b.v., respectively) are found during all interglacials, while values higher than these are found in stages 5.5, 9.3 and 11.3 (this last stage is probably incomplete), with the highest values during stage 9.3 (300 p.p.m.v. and 780 p.p.b.v., respectively)."
For their entire data set, the CO2 levels, and the methane levels are at their highest levels. It isn't just barely higher, rather the current reading of CO2 is 20% higher than the higest value for the past 420,000 years, and the methane level has more than doubled.
Originally posted by: LegendKiller
Please, that ignores all basic premise of science, where you statistically analyze the data, coming up with a correlation coefficient. From what I have seen, nobody has done this. That could be for two reasons.
1. They have done it and the R2 absolutely sucks and you cannot prove a direct correlation with any high amount of certainty and the info was buried because nobody wants to admit they are full of crap.
2. They won't do it because they know it's a hopeless study, because if somebody did it and released the data, they'd be ridiculed for being Republican shills, they know that the R2 is too low to be conclusive.
Seriously, did you actually take the time to read the Petit et al paper, because right after their discussion of the unprecidented CO2 and methane levels, they said:
"The overall correlation between our CO2 and CH4 records and the Antarctic isotopic temperature5, 9, 16 is remarkable (r2 = 0.71 and 0.73 for CO2 and CH4, respectively). This high correlation indicates that CO2 and CH4 may have contributed to the glacial?interglacial changes over this entire period by amplifying the orbital forcing along with albedo, and possibly other changes15,16. "
So not only are the CO2 and methane levels unprecidented, they have a good correlation between those gases and temperature. This begs the question, why cite their paper in the first place?
Originally posted by: WHAMPOM
I can't believe some of you are still denying human caused global warming. Millions of tons of CO2 are released into the atmosphere daily and have no effect? Think of the effect of lead or murcury, before we found how dangerous a minute amount was.
Wwe are tallking about Gore's Movie, not the Bush Administration.Originally posted by: BrownTown
think how dangerous a bunch of people are who are convinced they are doing what is right when really they are completely misguided.
Originally posted by: LegendKiller
Originally posted by: WHAMPOM
I can't believe some of you are still denying human caused global warming. Millions of tons of CO2 are released into the atmosphere daily and have no effect? Think of the effect of lead or murcury, before we found how dangerous a minute amount was.
And how many times in history according to the Vostok cores have we gone through a cycle like we are now? How many times has Co2 peaked *higher* than it had peaked before? Several in fact. The earth is random and drawing direct correlations is stupid, especially when nobody has done a proper statistical analysis of Man's effect.
Thats because, according to the Vostok cores, we were at a peak some 1,000 years ago, we are just higher than the last peak. However, that doesn't mean *WE* caused that higher peak or we have extended it, it could just mean that the Earth has changed in some other way or it could be that the Sun, as mentioned above, is outputting more heat?
I find it amazing how arrogant people are to think they know exactly what the Earth is doing and they think that they have figured out ALL variables in a multi-variable regression and can firmly say that they have determined that randomness is not random, but ordered and directly influenced.
Only those ignorant to statistics would claim anything but random until a proper analysis is carried out.
Originally posted by: sandorski
Originally posted by: LegendKiller
Originally posted by: WHAMPOM
I can't believe some of you are still denying human caused global warming. Millions of tons of CO2 are released into the atmosphere daily and have no effect? Think of the effect of lead or murcury, before we found how dangerous a minute amount was.
And how many times in history according to the Vostok cores have we gone through a cycle like we are now? How many times has Co2 peaked *higher* than it had peaked before? Several in fact. The earth is random and drawing direct correlations is stupid, especially when nobody has done a proper statistical analysis of Man's effect.
Thats because, according to the Vostok cores, we were at a peak some 1,000 years ago, we are just higher than the last peak. However, that doesn't mean *WE* caused that higher peak or we have extended it, it could just mean that the Earth has changed in some other way or it could be that the Sun, as mentioned above, is outputting more heat?
I find it amazing how arrogant people are to think they know exactly what the Earth is doing and they think that they have figured out ALL variables in a multi-variable regression and can firmly say that they have determined that randomness is not random, but ordered and directly influenced.
Only those ignorant to statistics would claim anything but random until a proper analysis is carried out.
Keep believing that. I'll accept the science instead though.
Originally posted by: maluckey
Originally posted by: Carlis
Global warming as a resault of mans transformation of vegetation and the use of fossile fuel is as close to being proved as it gets. Some people with economic / political interests would have us belive different however.
1) It is a fact that the level of CO2 has increased dramatically during the last 250 years, particulary during the 20th cent.
2) It is a fact that CO2 blocks theremal radiation but is transparant to visible light. Hence it prohibits heat from radiating from the surface of earth and out into space. From a primitive radiation balance calculation it can be shown that the average temp on earth would be -18 C if we had no atmosphere. The transparancy at certain wavelengts (or lack of) of various gases in the atmosphere is responsible for the fact that radiative balance is established at a significantly higher temperature (about 16C). The green house effect IS A FACT. That we would not change the temperature for radiative balance by altering the components of the atmosphere would be against all experiance.
3) It is a fact that the altered levels of CO2 in the atmosphere results from human activity. During a period of a little more than 200 years conentrations of CO2 has increased by >30%. Acording to a previous post those levels havent been seen for 650 000 years. I cant verify this is the exact figure but it is something of that proportion. 650 000 years ago is before the existence of dinosaurs, it is in the beginnings of advanced life with a completely different eco system. That should give some perspective on the scale of this.
4) It is a fact that temperatures have changed dramatically during the last 100 years, in a way never seen before.
So. We have altered the components of the atmosphere. We have very strong reasons to belive that this should result in global warming. During the last 100 years we have seen rising temperatures that has nog equality in history or prehistory.
What conclusion should we make from this? The most resoneble one is that global warming results from human activity, particulary the use of fossile fuel. Is it proved? From a strict scientific point of view it isnt. When scientists say we lack a proof it is mainly out of a acaemic point of view. I have met a lot of scientists working with this matter both at my University and in a private company. They all regard this as a fact. its time we admit what is going on and focus on solving the problem instead...
As for the price of failure, global warming means more masstransport. Areas near the equator will be hoter and dryer while land remote from the equator will be wetter and warmer. This means parts of the world will become uninhabitable. Many countries close to the equator are poor and lack the resoureces necessary to deal with extreme wether. In fact, it is proposed by researchers that missing rain periods in parts of africa may result from this. If that is true, the bodycount is about 2 000 000 allready. Of course this is not a fact but it can give you some perspective on the effect of altering our climate. Also keep in mind that this is only the beginning. In some decades the impact of this will surface. we can expect destroyd ecosystems, eliminated species and millions of human causalties in the third world. The fact that the scientific evidence of global warming was some what incomplete will not be very usefull then.
Apparently you disregarded every non-conforming science opinion that is out there......It is a FACT that CO2 is on the rise. It is a FACT that there has been FAR higher CO2 readings in the 1930's than now. It is a FACT that CO2 readings have in the past been even higher than that. It is a FACT that the earth has been hotter and COOLER than is is at the moment.
Some studies suggest that CO2 is not the sole terror suspect in Global Warming..
Critics to Global warming
Leading scientist recants global warming CO2 connection
Discussion on the CO2/ global cooling link
It is NOT a proven fact that humans are responsible for any global warming pattern at all. Suppositions and assumptions are fine, but call them what they are.
I do however, believe that reducing pollution will certainly not hurt the status quo.
Originally posted by: AnitaPeterson
Amazing how some people (on AT and in the U.S., in general, if AT is a representative sample) can be against taking measures to prevent - or reverse - not only global warming, but also pollution and waste (although many such measures are simple, efficient and cost-effective), but they will advocate continuing the war in Iraq and what's generally known as the current "war on terror".
Originally posted by: AnitaPeterson
Oh, really?
All I've seen in this thread is "shoot the messenger" knee-jerk reactions. I have yet to see one of you naysayers coming up with a reply like "Al Gore's film is full of crap, but it's making a good point, so here are things that I do, and everybody else should try"
Originally posted by: AnitaPeterson
LegendKiller,
I didn't call you a moron anywhere in my posts. I believe I maintained a civil tone throughout my input. But you obviously miss some civil education, so I'll take my gloves off as well.
You come across as a hysterical individual, clamoring for attention. And your incessant demands for utter and irrefutable proofs of human activity changing the climate, bleeting "correlation does not equal causation", do very little to convince me otherwise.
If you re-read my first post, I'm not even pointing a finger at you, or anyone else in particular. I said "some people here." Now, who's generalizing, Miss Hissy-Fits?
bah...
Sorry, everyone else, for the detour.
In the end, it boils down to this: Whether the climate change is caused primarily by humans or someone else, it is nonetheless true that we have the possibility to stop and prevent further damage to the eco-system, and there's no excuse for not doing so.
Originally posted by: LegendKiller
It cannot be replicable on a global scale nor has Man's influence been statistically proven. It just cannot be. Why? Because the current Co2 and temperature peak started tens of thousands of years ago.
Originally posted by: LegendKiller
You people are so gullible, you swallow and head in the direction that anybody points you in, forgetting reason, statisitics, and truthful science.
Originally posted by: LegendKiller
You refuse to acknowledge that the ice caps weren't in existance before nor will they always be there in the global cyclical pattern.
Originally posted by: LegendKiller
You refuse to acknowledge that the ice caps are getting thicker in the middle but smaller along the periphery.
Originally posted by: LegendKiller
You fail to acknowledge that the Sun's ouput has increased over the past 30 years when we finally have had accurate readings.
Originally posted by: LegendKiller
You fail to acknowledge that the Vostok cores show that peaks and valleys existed long before man.
Originally posted by: LegendKiller
I just refuse to acknowledge that man's Co2 = GW, because no matter what you say, it is *NOT* scientifically nor statistically proven.
Originally posted by: LegendKiller
blind to the reality that the Earth has been doing this stuff long before we got here.
Originally posted by: Grabo
As for the sun's fingers: http://www.cnn.com/2006/TECH/science/09/15/global.warming.sun.reut/index.html
What other 'natural' causes of the present warming are still alive and kicking?
Of course, LegendKiller will typically note the last sentence. It doesn't really mattery what is growing increasingly likely to environmental scientists across the globe, it doesn't really matter that >50million years ago, when the levels of co2 were likely much higher than today- there were no humans to suffer the consequences- that we don't know very well what conditions prevailed on the globe then, or even if the lvl of co2 rose , naturally, as sharply as it is doing now- because some will not admit something exists even when it knocks them over the head.
We know co2 is a greenhous gas. Not the most important - that is water - but we aren't adding water to the atmosohere at a disastrous rate.
From Wikipedia (http://en.wikipedia.org/wiki/Image:Carbon_History_and_Flux-2.png
"
The net flux of carbon into the atmosphere before the rise of fossil fuel burning may be a natural fluctuation or it may also be related to human activities such as the clearing of forests or changes agriculture during the first industrial revolution. As seen at right, the modest changes from ~1750-1850 are largely within the margin of natural variability, but the subsequent accummulation of carbon dioxide far exceeds any concentration witnessed in the last 400,000 years and may have not occurred over the last tens of millions of years." How dangerous is it not to think this is a 'coincidence'?
Notice how there isn't a 'Disputed' sign there.
Originally posted by: blackllotus
Originally posted by: LegendKiller
It cannot be replicable on a global scale nor has Man's influence been statistically proven. It just cannot be. Why? Because the current Co2 and temperature peak started tens of thousands of years ago.
CO2 levels did start rising about 10-20 thousand years ago, however this was following the normal trend of CO2 variations along with ice age cycles. The CO2 levels did not dramatically rise until the Industrial Revolution.
Originally posted by: LegendKiller
You people are so gullible, you swallow and head in the direction that anybody points you in, forgetting reason, statisitics, and truthful science.
This is a very interesting claim since your views are at odd with the vast majority of scientists in this world.
Originally posted by: LegendKiller
You refuse to acknowledge that the ice caps weren't in existance before nor will they always be there in the global cyclical pattern.
This is irrelevant, because the current rate of melting will end up putting a much larger strain on humans than a long-term gradual melting would.
Originally posted by: LegendKiller
You refuse to acknowledge that the ice caps are getting thicker in the middle but smaller along the periphery.
Again, this is irrelevant. All that matters is that the ice caps are melting faster than they are growing. At the current rate of warming, the global sea level could rise 20-40 feet within a century. This would displace hundreds of millions of people.
Originally posted by: LegendKiller
You fail to acknowledge that the Sun's ouput has increased over the past 30 years when we finally have had accurate readings.
This is true, however, unlike the warming trend, there is no reason to believe it is unusual. Based on a longer record provided by tree rings and sunspots, fluctuations in the sun's output appear to be related to past warming/cooling cyclesl.
Originally posted by: LegendKiller
You fail to acknowledge that the Vostok cores show that peaks and valleys existed long before man.
I believe there is only one Vostok Core, and it provides the exact data that has led scientists to conclude that the current warming trend is out of the ordinary. The current warming trend is not consistent with the temperature cycles over the past 400,000 years.
Originally posted by: LegendKiller
I just refuse to acknowledge that man's Co2 = GW, because no matter what you say, it is *NOT* scientifically nor statistically proven.
Scientifically the evidence is extremely strong. The current warming trend coincides with the current skyrocketing of CO2 levels AND with the Industrial Revolution. Graphs of the data are easy to find and the correlation between them is clear. The chance that this is all happening by coincidence (as you claim) is so small, that no rational human with knowledge of all the facts would consider it.
Originally posted by: LegendKiller
blind to the reality that the Earth has been doing this stuff long before we got here.
The sad thing about this claim is that even a thirty second glance at the data shows that the current warming trend is not consistent with any past climate activity on earth.
Originally posted by: piasabird
Maybe if we built a gigantic ship that could make big blocks of ice we could dump ice in the ocean and slowly cool down the planet??
