SherryMayo wrote:
The graphs that were posted of past climate (on another thread?) earlier neglected to include the almost vertical uptick that represents the recent warming.
Which may or may not exist. Thats the point. It has been argued that the hockey stick is an artifact of the method used to analyse the data.
http://www.climate2003.com/pdfs/2004GL012750.pdf
McKintyre and McKitrick wrote:Geophysical Research Letters, Vol 32(3), Feb 12 2005, copyright 2005 American Geophysical Union (doi: 2004GL012750). Further reproduction or electronic distribution is not permitted. This is a preprint of the GRL paper that shows Mann's program mines for hockey sticks and overstates the statistical significance of the final result. As of today (July 22, 2005) there have been 4 technical comments submitted to GRL in response. We submitted replies to all 4, and they were sent out for refereeing. Two of the comments have been rejected by GRL."
Its not a case of pure logic like a peak of global oil production, which
has to exist if one accepts that the world is finite and that crude is not somehow being continuously magicked into existence...
The uptick is based on a lot of proxy data and complex analysis including a lot of 'adjustments' or fudge factors as I perfer to think of them. How the data is interpretted is arguable. Mann (who producced the famous 'hockey stick' graph) has already had to issue corrigenda (published in Nature) for his slop under criticism from Ross Mckitrick and Steven McIntyre. The Hockey stick graph is the only one of many published studies of past temperatires which makes the (at least previously) widely accepted Mediaeval Maximum mysteriously disapear..Its not as clear cut as it is often presented.
once you've persuaded me convincingly that the 'uptick' is real then we can start discussing how much of it is anthropogenic and how much natural. I doubt there will ever be an answer to that one.
Personally, compared with the potential problems associated with Peak Oil I dont think its worth discussing. Nothing will ever be done to significantly reduce CO2 emissions. If we accept the CO2 hypothesis as it is presented, people will not starve or freeze themselves to death or voluntarily make themselves significantly poorer to make the world cooler in 2100. The Kyoto limits (even if adhered to, which they wont be) will make no signficant difference.
Who pays for any research is irrelevant. Mentioning it constitutes an ad hominem attack. One could say the same thing about all the climate scientists who have garnered many billions of government and charity money supporting 'global warming' research over the last 15 years. Nice work if you can get it! Thanks, Al. All that matters is the data and arguments . If its good research I dont really care if Aldolph Hilter, Pol Pot or Ghenghis khan paid for it.
Personally Im convinced that anthropogenic climate change
does exist, just as Im convinced that climate also changes naturally, both cyclically and erratically, sometimes quickly sometimes slowly. The changes are both local, regional and global. for instance on a regional level, Alaska is currently getting warmer while the interior of Antarctica is getting colder. The Mediterranean basin is getting drier while the Southern Sahara is getting wetter (or at least noticably greener)
Im also convinced that we'll never be able to disentangle the two effects. We dont and never will understand the processes which constitute 'climate' nearly enough to make accurate predictions for 100 years down the line, anymore than the stock markets 100 years down the line. The 2 problems are similarly complex, as well as, I think, being equally poorly understood.
one good link deserves another...
http://climateaudit.org/
http://www.john-daly.com/
http://www.newscientist.com/article.ns?id=dn4216
make your own minds up folks... I'd ignore what the bunch of burocrats called the IPCC , environmentalists and environment ministers have to say and take a look at the raw data and basic science, if you have the patience. The recent reconcilliation of balloon and satellite data ( which had previously contradicted eachother in terms of the climate models) is good support for a recent warming trend. going further back things get more murky...
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and finally finally (added later) talking of murk...
Phil Jones, well known climate 'scientist', whose work heavily underpins the last IPCC report on climate change, in an email to Warwick Hughes, Australian sceptic :-
"Even if WMO (World Meterological Association) agrees, I will still not pass on the data. We have 25 or so years invested in the work. Why should I make the data available to you, when your aim is to
try and find something wrong with it."
okey dokey... never challenge the priesthood. They get irrational and start frothing when challenged by mere mortals... mere mortals should not be allowed to find
something wrong with their work... science? lol
...and why would WMO not agree to the public release of bog standard meteorological data? State secret or something? Only the priesthood who can be relied on to give it the 'correct' interpretation allowed to get a look see?
http://www.warwickhughes.com/climate/