Monday, December 11, 2006

A downgrade in what we're doing to Gaia

UK SUNDAY DAILY TELEGRAPH: UN downgrades man's impact on the climate
Mankind has had less effect on global warming than previously supposed, a United Nations report on climate change will claim next year.
With the fourth report of the UN's Intergovernmental Panel on Climate Change (IPCC) about to be released early next year, jostling for position has already been taking place to spin the report. Just a couple of days ago, for example, we had this from Yahoo News: "the phone-book-sized report will convey an unvarnished message that will be bleak and quite possibly terrifying. Those close to the IPCC say it will not only confirm the grim warnings of the past but also amplify them."

Well, maybe not. Mongabay summarises the forthcoming Policy-makers' Summary of IPCC IV:
The Telegraph says that the report will reduce its estimate of man's role in global warming by 25 percent. However, the IPCC will still project global temperatures to climb by [up to] 4.5 C during the next century and rising sea levels, albeit by half the amount -- 17 inches instead of 34 inches by 2100 -- forecast by the IPCC's 2001 report. It will also note that atmospheric carbon dioxide levels have continued to climb over the past five years [See Not PC: More Restrictions, Less Power, More Carbon] but that the overall human effect on global warming since the industrial revolution has been dampened by cooling caused by particulate matter and aerosol sprays, which accumulate in the upper atmosphere and reflect heat from the sun.
There is no more persuasive or more widely-reported document in the global warming debate than the reports produced by the IPCC -- or, to be perfectly accurate, the Policy-makers' Summaries of the IPCC reports. Indeed, it was the predictions made in the first IPCC report in 1990 that kicked off the current hysteria, even though sixteen years later their predictions of global-warming-generated disaster have largely failed to materialise. (The Policy-makers Summary for the 1990 report predicted a 0.3 C-per-decade rise in global mean temperature due to what it called an "enhanced greenhouse effect," and a whopping six-centimetre-per-decade rise in the average sea level. In fact temperatures have been falling since a 1988 El-Nino high, and sea level rises have persistently refused to accelerate as predicted, remaining at just 2.4 ± 1.0 mm/year.)

In the absence of significant, real planet-wide warming or of any sea-level rises to report anywhere near that magnitude, it is computer models and myths upon which scaremongers have to rely for their evidence of warming, and it is the Policy-makers' Summaries of IPCC reports on which the media relies for their own reports, even though these summaries themselves have been widely criticised for being misleading and unrepresentative (British scientist Keith Shine for example: "We produce a draft, and then the policy-makers go through it line by line and change the way it is presented.... It's peculiar that they have the final say in what goes into a scientists' report" [1995]).

Astute readers will have noticed that each IPCC report since the first in 1990 have resulted in a downgrade in the alarmism. The last report for instance predicted "that global mean temperatures would rise by between 1.4 and 5.8 C (2.5-10.4 F) by 2100 compared with their 1990 level." The upper range in this latest report is now put at 4.5 C.

As Julian Pistorius suggests: "Look for more of these sorts of 'downgrades' in the future, until the next environmental scare can be cooked up."

LINKS: UN says man's global warming impact lower than thought - Mongabay.Com
"UN downgrades man's impact on climate" - Julian Pistorius
'Global warming' at a glance - Junk Science


RELATED:
Science, Global Warming

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7 Comments:

Anonymous Falafulu Fisi said...

It is about time to see commonsense in the science of the climate change. Thank God that perhaps the right formulation of computer simulation which I assume have included into the model the very complex phenomena of 'feedback dynamical coupling systems' such as 'atmospheric' coupled to 'oceanic' systems. There are many different types of coupling systems, which were already known to weather scientists, but were omitted due to difficulties of how to develop and model them. There were separate systems models due to pure 'atmospheric' by itself. Another separate models due to 'oceanic' dynamics, but were difficult to model them as one system due to the highly "non-linear" of both individual systems, plus another difficulty arises because they are coupled to each other, meaning if one systems is affected (perturbed) by one variable, the other system is automatically affected, but with some process time-delay is incurred. The process is vice-versa. These problems were addressed in a symposium in 'Feedback variable in Climate Change' about 3 years ago, which was organised by NASA.

Commonsense must prevail over paranoia and scare mongering.

12/11/2006 04:09:00 pm  
Anonymous hemi said...

Hooray for consensus science!

12/11/2006 04:16:00 pm  
Anonymous Luke H said...

Add to this the report that cows are responsible for more greenhouse gas emissions than all forms of transport put together, and the classic environmentalist approach to climate change seems even more flawed.

cows are responsible for more greenhouse gas emissions than all forms of transport put together

12/11/2006 07:53:00 pm  
Anonymous Anonymous said...

Linking to Exxon funded JunkScience really doesn't help your credibility on this issue.

12/12/2006 04:22:00 am  
Anonymous kg said...

remember, PC, if Eeevil Exxon funds scientific research: BAD!
Scientists in receipt of taxpayer's money research: GOOD!

Anonymous, there's no such thing as a "bad" source of funding. Only good or bad research. Where the money comes from is irrelevant. Of more concern is the way bureaucrats get to amend and spin the reports.

12/12/2006 06:44:00 am  
Blogger PC said...

Posting anonymously does nothing for your own credibility, or for that of your comment.

Perhaps, anonymite, I can point you to 'Establishing an Establishment: A Different Kind of Censorship' to see what government funding of research tends to do?

12/12/2006 09:03:00 am  
Anonymous James said...

Linking to Exxon funded JunkScience really doesn't help your credibility on this issue."

I guess the fact that BP and Shell donate to Greenpeace shoots them out of the water too then Anon....?

12/12/2006 02:26:00 pm  

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