- #36
Skyhunter
You are the one who said:Andre said:Ah we're getting in the name calling stage and seeing the fallacy density increasing remarkedly with several other type of red herrings, like the doubling CO2 thinghy. I wonder when Godwins law kicks in.
Besides I was not name calling. I am a Leprechaun.Andre said:5. Carbon dioxide is the strongest greenhouse gas and is the primary driver for climate changes.
That’s most definitely false. It is not, and I have showed that many times in the Earth science threads. The effect is minor, not something to worry about.
That is not ad hominem, that is disclosure.Andre said:How nice to quote Michael Mann on his blog in Dec 2004 and demonstrate that he taught you all, how to use the ad hominem:
linking to
http://www.environmentaldefense.org/article.cfm?contentid=3804&CFID=21084385&CFTOKEN=29888831
But keep them coming please. Nice material for the courts of justice in due time. We will not forget it when it's time to clean out this mess.
So where did you get that record from, from 1000AD to 2000AD? Or are you meaning the record of the 19th century where the skill of the corrollation r2 is not exceeding 0,00?
The observed temperature record is what is used to calibrate proxy evidence.
http://www.realclimate.org/index.php/archives/2006/11/strawmen-on-greenland/#more-374
Proxy records (ice cores, ocean sediments etc.) that are related to climate (in some imperfectly known way, but with non-climatic 'noise') go back further. But they need to be calibrated to the instrumental record in order to be used quantitatively. Given that proxy records don't always extend to the present (due to collection dates, collection method, the physics or biology of the specific proxy) and that it is important to retain some instrumental data for validation of any calibration, there are only ~60-100 years of record left for the calibration - making it very difficult to assess how well the low frequency component (a few decades or longer) is represented (and much of the recent attention to recent proxy reconstructions really relates to exactly this point, rather than technical arguments about data processing). Of course, proxy records can also be usefully combined in a qualitative ways that don't require calibration (such as Osborn and Briffa, 2006).
Andre said:Please be so kind and show where it is proven that the temperature reconstruction after removal of the Bristlecone pines still produces hockeysticks. After all if the reconstruction is robust, the removal of one proxy should not lead to strong abbarations.
It has not been to my knowledge. If you remove the bristlecones, you have a warmer MWP.
Again I ask, why remove the proxy evidence that most closely matches the instrumental record?
Andre said:The reproduction of the work of others is one of the cornerstones of science. So what is the problem? Obviously, when there is no science then there is a problem.
That should be the job of independant scientists, not industry representatives.
Andre said:Finally about
Whilst it was observed by Graybill and Idso (Graybill, D.A., and S.B. Idso, (1993). Global Biogeochemical Cycles, 7, 81-95.) that the remarkable accelerated growth in the Sierra Nevada as of 1850 could not be attributed to local climate changes, hence it was attributed to anthropogenic CO2 fertilization. You will find the source quoted over and over again. Personally I'm thinking of increased air pollution due to the use of coal with SOx/NOx type of fertilizers. But that's all forgotten now. Everything is caused by global warming of course
So you are now attacking the source that you were just using to attack the hockey stick?
Talk about a red herring.
[Edit]
Actually this entire thread is a red herring. Even if MM05 is the gospel on the MWP, it has little bearing on what is happening today.
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