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Originally posted by PuterMan
reply to post by melatonin
You have basically posted unsubstantiated hype from the warmist bible and have not backed it up with one single reference and in addition have accused a member of being a liar.
Originally posted by Nathan-D
You don't understand the logarithmic effect. An increase from 3000ppm to 5600ppm is not the same as an increase from 300ppm to 560ppm. Here is a graph (below) using the IPCC's logarithmic computation (over-exaggerated) showing how when CO2 gets past 500ppm it's radiative forcing effect is essentially on a curve asymptotically approaching zero. Because CO2 has a strong logarithmic effect the only way climate models can produce catastrophic warming is through various feedback factors.
Link.
Originally posted by Nathan-D
Laugh all you like my friend. You won't be the first and you surely won't be the last. Not sure why my post deserves a 'lol'. After about 1400ppm the warming effect is so infinitesimal the 2600ppm increase from 3000ppm to 5600ppm (even though it's a substantially greater increase) still wouldn't rival the 260ppm increase from 300ppm to 560ppm using the IPCC's logarithmic equation
Originally posted by Nathan-D
reply to post by mc_squared
You clearly have no idea what this graph even is. It is a Planck distribution. The numbers on the bottom are wavenumbers, aka frequencies - not CO2 concentrations.
Where did I ever say that the numbers at the bottom represented CO2 concentrations? I never did. That was simply dreamt-up in your over-active imagination. I merely said after around 500-600ppm the effect is ever-diminishing which is clearly presented on the graph in blue (top right-hand corner).
Originally posted by melatonin
Look, Nathan, you really do not have a clue. Earlier you said:
That was simply dreamt-up in your over-active imagination. I merely said after around 500-600ppm the effect is ever-diminishing which is clearly presented on the graph in blue (top right-hand corner).
Now I would assume here that you mean the "600ppm CO2 F^ = 256.72Wm-2" (the only part in blue in the RH corner), which you infer shows an ever-diminishing radiative effect of CO2. And, by jove, it's lower than for the 300ppm measure using the modtran radiative transfer code (260.12wm-2)
Do you actually even have a clue what that means? Because it doesn't say what you think it does. The clue as to what it does mean is in the title of the plot. It does show a diminishing of something, not radiative forcing.
....
Now go and do some lernin' of what 'upward irradiance at 20km' might be telling you.
Once upon a time, a confused child found hisself at 20km above the earth in the stratosphere looking down at the surface, he happened to have a spectrophotometer and measured the irradiance leaving the earth. One year he measured it at 300ppm, and then later at 600ppm...
Originally posted by Danbones
and that there has been no statistically significant global warming since 1995"
www.geographictravels.com...
The link lists enough of the proven global warming scandals to leave little doubt as to its actual credibility.
Originally posted by PuterMan
reply to post by melatonin
Thank you for that. You completely missed the point, but then I am not surprised. Whether the other member was incorrect or not was not my issue. The issue was they way that you dealt with it and your numerous science quotations with not one single reference to back any of them up.
I shall still peruse your efforts tomorrow however since you did take the time to respond
Originally posted by melatonin
the other thread (where you decided I didn't post evidence
The points you made in that other thread, about how models have only just accounted for solar and volcanic forcings, is actually wrong. Hansen actually used data from the Pinatubo eruption to support the veracity of the NASA-GISS model in 1992:
To be honest, the erroneous points you made were of no interest to me. The only things I needed to do to support my points are that:
(i) human sourced GHGs (e.g., CO2) can alter climate (I did that with Harries et al., 2001)
(ii) The estimated effects of CO2 are potential adverse (I did that with Annan & Hargreaves, 2006)
And, as your response showed in that thread, the fact you don't get that climate sensitivity is an important point is not really my problem.
Must sleep. Ciao.
Originally posted by PuterMan
Originally posted by melatonin
the other thread (where you decided I didn't post evidence
The other thread. Are you serious? Since when in my posts in this thread have I referred to anything you posted in another thread?
Oh dear, it seems that you are not up with current news. I was referring to an article I read today - which I cannot just now lay my hands on - where this was stated. I assumed that being a interested in climate change you would follow the news but obviously not. I will find the article and post it tomorrow. You could say it was sort of tongue in cheek which had you read the article you might have recognised.
Please do not omit factoring in the effect of our star on that as well, since as was recently 'discovered' the fact that the sun and volcanoes, when taken in to account in the computer models, do have an effect upon climate, something which was originally not taken into consideration it would seem.
You state 'human sourced GHGs can alter climate. Yes they can and so can non-human sourced. You also refer to human sourced but make no mention of what proportion of the total increase in CO2 this human element represents. (By the way if you answer that be prepared to back it up with peer reviewed figures from a reputable source.) Your inference by making that statement is that ONLY human sources are relevant. Once again I am having to try and get you to be a bit more 'scientific' in the way you present information. It is not sufficient to say eggs from brown hens produce flatulence.
GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L21710, 5 PP., 2009
doi:10.1029/2009GL040613
Is the airborne fraction of anthropogenic CO2 emissions increasing?
Wolfgang Knorr
Department of Earth Sciences, University of Bristol, Bristol, UK
Several recent studies have highlighted the possibility that the oceans and terrestrial ecosystems have started loosing part of their ability to sequester a large proportion of the anthropogenic CO2 emissions. This is an important claim, because so far only about 40% of those emissions have stayed in the atmosphere, which has prevented additional climate change. This study re-examines the available atmospheric CO2 and emissions data including their uncertainties. It is shown that with those uncertainties, the trend in the airborne fraction since 1850 has been 0.7 ± 1.4% per decade, i.e. close to and not significantly different from zero. The analysis further shows that the statistical model of a constant airborne fraction agrees best with the available data if emissions from land use change are scaled down to 82% or less of their original estimates. Despite the predictions of coupled climate-carbon cycle models, no trend in the airborne fraction can be found.
You have to say that "In a study of hens it was found that eggs from browns hens caused flatulence whereas eggs from whilte hens did not." (Assuming of course that this was the result of the study.) Can you not see your erroneous method of reporting what you consider to be facts?
I have made no erroneous points and I take exception to your rude and disparaging tone. Your ignorance of how to refer to a scientific paper, considering your time on ATS and your supposed interest in science astounds me. Once again as I said before if you have the full text to Harries et al then quote it. An abstract is not sufficient.
My response in that thread showed no such thing. I am perfectly aware of climate sensitivity and once again if you bother to read what I said you would have seen that I agreed with you. You however do not want to read what is written, only what you think is written and then to make disparaging and inaccurate remarks about others to cover up your own shortcomings. In addition on that other thread which was NOT about climate change, you decided to make it so despite being requested not to.
This is a completely irrelevant point. Is anyone arguing about the sensitivity? You are pointing out effect and not cause.
Originally posted by melatonin
Climate sensitivity is the warming resulting from a doubling of CO2. It's both effect and cause. CO2 is the cause, and 3'C warming is the estimated effect.
I don't have a good feeling about discussion with you puterman. At the moment, you seem rather worried about your ego. The last person I was in a discussion with hurt ego issues was Nathan. Don't be so delicate. No harm or shame in not knowing things, or being wrong, or just learning stuff.
I'm usually wrong about a dozen or more times a day. It goes with the territory.
Originally posted by melatonin
What you mean that you didn't support a claim you were making? I'm shocked. I thought it was like some sort of rule of discussions with you.
Humans can account for 100% of the yearly increases in CO2. This doesn't need peer-review. Accounting of human sourced emissions show this. We emit around 30 billion tonnes of CO2 each year. The ocean and biosphere take in up to half of this. The remainder accumulates. In other words, we emit more than is required to account for the yearly increases. Are you actually questioning whether human are the cause of CO2 increases since the beginning of the industrial age? Burning old crusty dead things locked out the carbon cycle will do that, you know...
The approximate annual human contribution to the overall atmospheric CO2 content is apparently about 8 billion (some say six billion) tons per year. Humans emit approximately 8 billion tons of CO2 per year. It sounds like a lot doesn't it? But if we compare that to the total amount of CO2 in the atmosphere we can put that figure into perspective. Approximately 8 gigatons is the total human annual output of CO2.
It is said that the atmosphere contains an average of about 750 gigatons of CO2 which is roughly 385 ppm. (parts per million)
8 gigatons into 750 gigatons = 93.75
385 ppm ÷ 93.75 = 4.1066666666666665 ppm.
So assuming these figures are correct, our annual contribution of CO2 to the total average of 385 ppm is at most, a fraction over 4.1 parts per million. 4.1 ppm is the entire annual CARBON FOOTPRINT of the whole of the human race. That means that if all 6.8 billion of us reverted to a state before the discovery of fire we could reduce atmospheric CO2 by a staggering 4.1 ppm per year, out of a claimed total average of 385 ppm
Last year alone global levels of atmospheric carbon dioxide, the primary driver of global climate change, increased by 0.6 percent, or 19 billion tons. Additionally methane rose by 27 million tons after nearly a decade with little or no increase.
This study was actually pushed by deniers, as usual they barely had a clue what it meant.
GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L21710, 5 PP., 2009
doi:10.1029/2009GL040613
Is the airborne fraction of anthropogenic CO2 emissions increasing?
Originally posted by PuterMan
Originally posted by melatonin
What you mean that you didn't support a claim you were making? I'm shocked. I thought it was like some sort of rule of discussions with you.
Certainly is an I have apologised for not having the material to hand. I will seek it out.
William Pratt. The Debate is not over.
Don't worry you will get over the taint.
....We emit around 30 billion tonnes of CO2 each year....
The approximate annual human contribution to the overall atmospheric CO2 content is apparently about 8 billion (some say six billion) tons per year. Humans emit approximately 8 billion tons of CO2 per year. It sounds like a lot doesn't it? But if we compare that to the total amount of CO2 in the atmosphere we can put that figure into perspective. Approximately 8 gigatons is the total human annual output of CO2.
Now I am not saying you are wrong, but my 'source' gives a different figure. You do not quote your source, you just pluck a figure out of thin air. Now do you see my problem?
Run with this for a moment assuming that the 8 billion figure is right. He then goes on to say:
It is said that the atmosphere contains an average of about 750 gigatons of CO2 which is roughly 385 ppm. (parts per million)
8 gigatons into 750 gigatons = 93.75
385 ppm ÷ 93.75 = 4.1066666666666665 ppm.
So assuming these figures are correct, our annual contribution of CO2 to the total average of 385 ppm is at most, a fraction over 4.1 parts per million. 4.1 ppm is the entire annual CARBON FOOTPRINT of the whole of the human race. That means that if all 6.8 billion of us reverted to a state before the discovery of fire we could reduce atmospheric CO2 by a staggering 4.1 ppm per year, out of a claimed total average of 385 ppm
It is patently obvious that neither of these figures is correct when applied on a straight line back 200 years so we need a figure that accounts for the correct annualised ppm.
Well I am too tired to work out that maths but this NOAA site shows < 1ppm in the 60s 1.5ppm in the 80s and 2.4ppm in 2006
Last year alone global levels of atmospheric carbon dioxide, the primary driver of global climate change, increased by 0.6 percent, or 19 billion tons. Additionally methane rose by 27 million tons after nearly a decade with little or no increase.
Mauna Loa observatory confirms a continuing trend at the same rate so we are at 390+ppm now.
I believe both our figures are incorrect. By the way before anyone says you can't take CO2 samples at a volcano I had good discussion with a scientist involved in this and he ably demonstrated that indeed you can.
Just for good measure here is another site that attempts to put forward 6.0ppm even though NOAA only say 2.4ppm. Oh yes they are all out there.
...............sorry, something has come up - gotta go. I will get back to it.
Nathan starts here:
A single doubling is probably certain at this point in time. A second is possible. Indeed, some groups are talking about aiming for 650ppm rather than the 450ppm that was proposed as the best we could achieve. Thus we are talking of a best of over 3'C, with an upper potential of 6'C.
That is significant. Indeed, we will be in a situation not seen for a very long time. The estimates of climate sensitivity are based on observational data and modelling. Again, you are just a dishonest ideologue.
Much like water vapour (which some may know deniers will constantly remind people is an important greenhouse gas and therefore causes warming), CO2 is affected by temperature. Thus, when temperature rises, the atmosphere can hold more water vapour (which is sourced from oceans). This increase in water vapour causes warming. So in this case water vapour is a feedback.
For CO2, when ice-age terminations are triggered by orbital variations, the initial warming results in release of CO2 from oceans, this CO2 causes warming. In this situation, CO2 is a feedback.
So the idea he is proposing here is that because temperature causes CO2 increases during ice-age terminations (well-accepted and even predicted), CO2 cannot 'control' temperature. Yet earlier in his post he says:
Agreed. The CO2 in the atmosphere will be having an effect. But how much warming is caused by MMGW due to CO2?
You might note that after making a total hash of trying to look like he knew what he was talking about and blatantly lying about what his said posts to save face, he disappeared for a few days to resurface spouting the same old BS.
he dissapered for a few days
Originally posted by Nathan-D
Agreed. The CO2 in the atmosphere will be having an effect.
Ummm! That would be trends in the average anomaly going up, and up observed over a time period that appears anomalous in conjunction with the observed increase in CO2 contributed by Anthropogenic activity.
But how much warming is caused by MMGW due to CO2?
No-one has offered any empirical evidence that it is more than insignificant, or that what has happened to the temperature is not merely mother Earth rolling on with natural temperature cycles has she has done for millennia.
I have done my homework, I just use valid material rather then dismissing the issue with red herrings.
Oh atlasastro, you haven't been doing your homework, have you? All glaciological proxies, without exception, show that temperature controls CO2.
Which you introduce as conjecture to explain the recent warming whilst ignoring all that I mention above.
There is a lag lasting, on average, 800 years between changes in temperature and corresponding changes in CO2.
This is because the oceans are so vast and deep they literally take hundreds of years longer than the continents to react to temperature changes - especially at the very bottom of the oceans where the deepest ocean currents take the longest to circulate. And as everyone knows, as the oceans warm they release more CO2 and as they cool they suck more CO2 out of the atmosphere - thus the "cause and effect" link is most likely the other way around. Instead of CO2 controlling temperature, it is more likely that temperature actually controls CO2, thus explaining the correlation.
Right. But we already know that CO2 follows temperature, right?
You will also note that solar irradience is also trended in the link and graph above in relation to net forcingm which you should consider in relation to the following.
The graph you cited, I'm assuming is from Lockwood and Frohlich.
The counterargument to Lockwood's and Frohlich's methodology can be found here: icecap.us... You should note that other scientists like Willie Soon and Douglas Hoyt have come to different conclusions so this is by no means a settled subject. Even if the correlation between solar activity and temperature had broken down from 1970 onwards, that doesn't prove anything because the alternative possible drivers of observed global temperature changes are innumerable and climate scientists have hardly begun to explore the tip of this vast iceberg as yet. What about PDO, AMO, and GCRs? All possible alternatives. If we are doing proper science we must endeavour to exhaust all of the possibilities - thoroughly.
The average 800-year time-lag between temperature-changes and corresponding CO2-changes is certainly not conjecture. See here: www.palisad.com... These detailed graphics from analysis of Dome and Vostok ice core data mathematically show that CO2 follows temperatures.
Again, we already know that temperature controls CO2 levels, so why should we be surprised to see a correlation?
Explain the Ocean anomalies then.
NASA's GISS data is compromised because the surface temperature readings from thermometers are conveniently sited next to the air-conditioning vents of large buildings.
NASA's temperature data is in pretty bad shape. Please see here: wattsupwiththat.com... Quote from the article:
NASA's disgrace was affirmed in March 2010 when they finally conceded that their data was in worse shape than the much-maligned Climatic Research Unit (CRU) at the UK's University of East Anglia. (Dr Anderson) advises it is fair to assume that NOAA were using this temperature anomaly to favourably hype a doom saying agenda of ever-increasing temperatures that served the misinformation process of government propaganda.
Here is a more revealing graph of the surface temperature readings from the GISS data. See any significant warming since 1995? See here: www.junkscience.com...
Statistically speaking 1998 is significant as the warmest year on record comes after 1995. Statistically speaking it is significant of a trend in warming. Statistically speaking it is evidence of the trend in warming we are seeing and is related to anthropogenic CO2 that statistically is noted to precede these statistically significant warm records.
I didn't say no warming. I said no statistically significant warming.
The rate of warming is trended from absolute temperatures. It can be trended for the globe, my use of the graphic was to show the trend. Wether you reduce to anomaly trends or trends in absolutes, it is the same. Up. For the globe.
Firstly, that graph concerns only one country, not the globe, and secondly, I am talking about the rate of warming, not absolute temperatures.
The trends are more or less the same.
Oh, atlasastro. The rate of warming between around 1975-2000 in the graph I presented in my initial post (and above) is exactly the same as the rate of warming that occurred between around 1910-1945 and both occurred during significantly different periods of anthropogenic emissions.
Where does the level of anthropogenic CO2 input appear as being cyclical so as to dismiss it as insignificant to the warming trends?
Excuse me?
Originally posted by Nathan-D
Where did I ever say that the numbers at the bottom represented CO2 concentrations? I never did. That was simply dreamt-up in your over-active imagination.
B - Do you agree that from 1995 to the present there has been no statistically-significant global warming
Yes, but only just. I also calculated the trend for the period 1995 to 2009. This trend (0.12C per decade) is positive, but not significant at the 95% significance level. The positive trend is quite close to the significance level. Achieving statistical significance in scientific terms is much more likely for longer periods, and much less likely for shorter periods.
E - How confident are you that warming has taken place and that humans are mainly responsible?
I'm 100% confident that the climate has warmed. As to the second question, I would go along with IPCC Chapter 9 - there's evidence that most of the warming since the 1950s is due to human activity.
Originally posted by s7ryk3r
reply to post by Muckster
I do not think your Google search really proved your case either, you can do that for almost every other year as well and will be bound to get something. Just try it for yourself....
Based on all of the information presented on this first page and after studying most of it I can safely assume we have no catastrophe to be worried about in regards to human climate change.
Perhaps it is your concern for the environment which has clouded your judgement which is by all means understandable but why continue trying to deny it? Instead of trying to debunk the skeptics how about you promote information about why we should take care of our environment instead?
For me it was looking at the original data which was modified during the "Climategate Scandal" which made me realize what is happening and with this new Carbon Tax; my theory has only been confirmed.....
"You don't have to understand the desert: all you have to do is contemplate a simple grain of sand, and you will see in it all the marvels of creation."
No, it is not more likely. Because you point out we know we are increasing CO2 concentration very rapidly.
That would be trends in the average anomaly going up, and up observed over a time period that appears anomalous in conjunction with the observed increase in CO2 contributed by anthropogenic activity.
It is a pretty simple equation Nathan. But Like I noted in a previous post, math is not your strong suite is it? For further clarification please refer to the sudden increase in one of the two variables (that would be CO2), the one which you agree effects the other (that would be temperature).
It is the fact that our activity is unprecedented, that makes it significant as a variable related to climate change when considering the patterns of natural cycles and events that are extracted from historical records like Ice Core Data.
Can you please point out in the cycles and the history of "Mother Earth rolling on" that 6 billion people existed and pumped massive amounts of sequestered Carbon that we then converted by way of combustion into a Gas, a gas that you agree effects temperature. Can you point that human activity out in the "History of natural cycles of Mother earth rolling on "so as to dismiss it as being insignificant and just a part of the normal cycles.
What you fail to consider is that proper scientific investigation actually looks at the trends in net radiative forcing involved (of which CO2 is just one, but one that increases rapidly) so as to validate the idea that CO2 is driving the trends we are seeing now, and especially the last 35 years. By calculating the net forcing involved we see that it correlates with the temperature anomalies. Again, whilst your criticisms of correlations are noted, so too is your acceptance that CO2 will effect temperature. And that is exactly what the net radiative forcing is, a calculation of the increased CO2. So we are able to see a trend in CO2 that precedes the temp rises, calculate the net value of the forcing and see if it matches the temp. anomaly trends. And guess what Nathan, they do. Imagine using the laws of physics to calculate a value of impact from GHG's in relation to climate temperature.
So you can see that the concept that temp increase is responsible for the increase in CO2 seems rather weak.
Yes, but again you failed to consider the value of the warming. But you actually cleared that up for us above.
Put simply, instead of suggesting that TSI has increased and this alone explains the temp anomalies, simply calculate the net forcing involved with the adjusted TSI and show it matches the temp records. Do they do that? No. Fail. Again.
And it is relevant to this discussion, because your blatant intellectual dishonesty on this topic becomes automatically relevant to any thread you decide to post on at this point. As melatonin said - you will disappear for a day or two and then be right back on here pretending nothing happened and posting the same tired arguments that have already been debunked over and over and over again. It's really lame.