"No Rise of Atmospheric Carbon Dioxide Fraction in Past 160 Years, New Research Finds."
According to "Science Daily": http://www.sciencedaily.com/releases/2009/12/091230184221.htm
My regards,
Widewing
Interesting paper...I wonder if you actually read it, Wolfgang Knorr's
actual paper? It uses much of the same data that
Khatiwala et al and
Le Quéré used, but they came to a conflicting result, saying the uptake is slowing. The difference between his work and theirs? Knorr used
annual data, whereas Khatiwala used
monthly data in order to account for seasonal variability. Carbon uptake varies by seasons you see..... Knorr can't account for that, a fact he actually alludes to within his own submission. The work in both papers is very good, otherwise. I'll highlight the major ideas for you.
Knorr himself cautions at his own paper's use for the very purpose you are representing it.
So is this good news for climate negotiations in Copenhagen? "Not necessarily", says Knorr. "Like all studies of this kind, there are uncertainties in the data, so rather than relying on Nature to provide a free service, soaking up our waste carbon, we need to ascertain why the proportion being absorbed has not changed"
I figure you just took the data analysis on "Science Daily" and arranged it to suit what point you were trying to make. Dr. Knorr would abhor this use.... after all, he is on the IPCC Scientific Working Group. You remember the IPCC right? The people that you say are behind this whole conspiracy right, lol?
Knorr, W, Law, R, Lenton, T, Lindsay, K, Maier-Reimer, E, Manning, AC, Matear, RJ, McGuire, AD, Melillo, JM, Meyer, R, Mund, M, Orr, JC, Piper, S, Platner, K, Rayner, PJ, Sitch, S, Slater, R, Taguchi, S, Tans, PP, Tian, HQ, Weirig, MF, Whorf, T & Yool, A. 'The carbon cycle and atmospheric CO2', in J.T. Houghton, Y. Ding, D.J. Griggs et al (Eds.), Climate Change 2000: The Science of Climate Change. Contributions of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change, (pp. 183-237), Cambridge University Press, 2001.
Again, a little background work. You might even try actually reading Wolfgang Knorr's "monstrous" 3 page online journal submission that you are quoting, rather than the short synopsis on "
Science Daily". After that, a quick search of Dr. Knorr's publications will assert his work on the subject, which are quite extensive and thorough. He is a pretty staunch supporter of AGW....
I mean, this is all work, not to be simply spoon fed to you. You're a smart enough guy. Read the actual work, before you use it out of context for the discussion. The use of his work in the way you did illustrates you didn't even actually look at the
abstract of the man's work. Or maybe you just didn't
understand it?
In your pursuit of this knowledge, you might want to consider the difference between
"airborne fraction of CO2" (which is what Knorr's paper is detailing) and
"CO2 fraction in the air", which is what causes AGW.
If you need a little help, just ask. Knorr is actually just detailing that his analysis of the data shows that the sink has increased with increase in volume of emissions,
not that there hasn't been an increase in CO2 in the air. Read a little.
Knorr finds that since 1850, the airborne fraction has Remained relatively constant. When CO2 emissions were low, the amount of CO2 absorbed by natural carbon sinks was correspondingly low. As human CO2 Sharply Increased emissions in the 20th Century, the amount absorbed by nature correspondingly Increased. The airborne fraction Remained level at around 43%. The trend since 1850 is found to be 0.7 ± 1.4% per decade.
There are several differences in methodology between Knorr 2009 and Le Quere 2009. Knorr's result does not include the filtering for ENSO and volcanic activity employed by Le Quéré. However, when filtering Knorr does include this in his analysis, he finds a trend of 1.2 ± 0.9% per decade. This is smaller than Le Quere's result but is statistically significant.
Knorr also finds the 150 year trend while Le Quéré looks at the last 50 years. This may be significant. If the airborne fraction is increasing, it is likely due to natural carbon sinks losing their absorption ability due to becoming saturated. Several recent studies have found drops in the uptake of CO2 by oceans (Le Quere 2007, Schuster 2007, Park 2008).
The "Airborne Fraction" refers to the amount of CO2 released into the air, after absorption. This has remained unchanged, for reasons unknown. It does not refer to the "fraction of CO2 contained in the atmosphere". This has increased constantly.
In other words, in 1850 when say 100 tonnes of CO2 was released, 43% of that was taken up, leaving the remaining 57% (57 tonnes) to go into the atmosphere. In 2000, when say 100 billion tonnes of CO2 was released, that same 43% was absorbed by the carbon cycle, leaving 57 billion tonnes to soak into the atmosphere. The percentage absorbed didn't change, the percentage in the atmosphere DID, obviously. This is what Knorr's paper was detailing, which you would have known had you taken the time to read it.
All it takes is a little critical thinking, some thought, and less spoon fed response, Widewing. If you read a little, you'd find Knorr agrees with AGW, his analysis of the CO
2 sink simply finds the 150 year trend.
And, although Penguin didn't do this either and his response is too quick in discounting Dr. Knorr's work (which is very good, BTW) without obvious cause, his point is generally valid. "Junior" is owning you.