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Since of the Earth's atmosphere is out-of-balance with the conditions expected from simple chemical equilibrium, it is very hard to say what precisely sets the level of the carbon dioxide content in the air throughout geologic time. While scientists are fairly certain that a 100 million years ago carbon dioxide values were many times higher than now, the exact value is in doubt. In very general terms, long-term reconstructions of atmospheric CO2 levels going back in time show that 500 million years ago atmospheric CO2 was some 20 times higher than present values. It dropped, then rose again some 200 million years ago to 4-5 times present levels--a period that saw the rise of giant fern forests--and then continued a slow decline until recent pre-industrial time
Dr. R. Tim Patterson is a Professor of Geology, Department of Earth Sciences, at Carleton University in Ottawa, Ontario, Canada. He uses sediments, microfossils and geochemistry to study evidence of past and present climate change in lake and oceanic sediments, his CU biography states. [1]
Patterson is a member of the Science Advisory Board for Friends of Science and appeared in the FoS anti-Kyoto video entitled "Climate Catastrophe Cancelled". He is also a member of the Science Advisory Committee for the Natural Resources Stewardship Project, a Canadian non-profit group, including a number of leading climate change sceptics, that was launched October 12, 2006. [2]
Patterson partcipated in the Kyoto's Fatal Flaws Revealed press conference, organized by Tom Harris of APCO Worldwide and held in Ottawa on November 13, 2002, along with other climate change sceptics including Fred Singer and Tim Ball.
Patterson also delivered remarks at the Risk: Regulation and Reality Conference, co-hosted by Tech Central Station, and held on October 7, 2004 in Toronto, ON.
Patterson says that he "has never received any funding whatsoever from any non-governmental agency" (as stated in a section, written by himself, in a previous version of this article).
Contents
Patterson on CO2 levels and global warming
In 2005, "US paleoclimatologist Tim Patterson told a congressional committee ... that there was no meaningful correlation between carbon dioxide levels and Earth's temperature during this geologic time frame.
"'In fact, when carbon dioxide levels were over 10 times higher than they are now, about 450 million years ago, the planet was in the depths of the absolute coldest period in the last half-billion years,' Patterson said." [3]
Profiles
Carleton University
According to his Carleton University biography, last updated October 14, 2005, Patterson "received both a B.Sc. in Biology (1980) and a B.A. in Geology (1983) from Dalhousie University, Halifax, N.S. and a Ph.D. in Geology from the University of California at Los Angeles (UCLA) in 1986 with Dr. Helen Tappan Loeblich and late Dr. Alfred R. Loeblich. After brief stints at the University of Southern California and University of California at Berkeley he joined Carleton University in 1988 as an Assistant Professor. He was promoted to Full Professor in 1999.
"He is Canadian leader of the International Geological Correlation Program Project IGCP 495 'Quaternary Land-Ocean interactions' and is Principal Investigator of a Canadian Foundation For Climate and Atmospheric Sciences project studying high-resolution Holocene climate records from anoxic fjords and coast lakes in British Columbia.
"Other areas of research interest include the use of marsh foraminifera to identify neotectonic and paleo-sea level changes in coastal British Columbia and New Brunswick, the further development of arcellacea as a new class of paleolimnological indicators, and to determine whether the methods of non-linear dynamics are applicable in the study of evolutionary phenomena."
Research
Patterson is "Principal Investigator for two major research initiatives: a Natural Sciences and Engineering Research Council Strategic Project studying the effect of past climate change (on scales varying from seasonal to millennia) on fish populations that are important to the North American west coast fishing industry; and a Canadian Foundation For Climate and Atmospheric Sciences that is investigating climate cyclicity as recorded in the varved sediments preserved in anoxic fjords along the coast of British Columbia. Other areas of research interest include the use of foraminifera to identify neotectonic and paleoceanographic phenomena on the west coast of Canada, the further development of arcellacea as a new class of paleolimnological indicators, and to determine whether the methods of non-linear dynamics are applicable in the study of evolutionary phenomena."—Staff Bio, Palaeontologia Electronica. [4]
Originally posted by misinformational
reply to post by mc_squared
And dude, John Christy works with the IPCC and has compiled numerous reports for IPCC - So is the guy a double agent now?
Originally posted by misinformational
reply to post by mc_squared
You are right - They are indicators. Indication does not equate proof.
So I have no interest in engaging in another pointless pissing contest with one of you. You want to throw all these denier myths at me about how:
- "oh it's natural"
- "all the planets are warming up"
- "CO2 lags temperature"
- blah blah blah
Originally posted by misinformational
reply to post by mc_squared
Alright then, let's follow your logic. It has been PROVEN that CO2 levels have been at least 10x (probably 20x) higher than they are now. Following your fear-mongering supposed science, if we had 20x the amount of CO2 now, what should the temperature of the earth be?
But wait - that period where CO2 levels were 10 - 20x as high was during the COLDEST ICE AGE in the planets history.
Atmospheric CO2 levels have reached spectacular values in the deep past, possibly topping over 5000 ppm in the late Ordovician around 440 million years ago. However, solar activity also falls as you go further back. In the early Phanerozoic, solar output was about 4% less than current levels. The combined net effect from CO2 and solar variations are shown in Figure 2. Periods of geographically widespread ice are indicated by shaded areas.
Originally posted by misinformational
reply to post by mc_squared
I was under the impression that one posted a thread on this site expecting intelligent debate over the it. I suppose my expectations are not aligned to yours.
There's no such thing as proof.
But when all the evidence and all the indicators start adding up to the same conclusion - it comes pretty damn close.
Skeptics lying to you to push a 'big oil' agenda
Or
People pushing global warming to steal even more money from you through various schemes
Both as bad as each other, let's not hate on the global warming skeptics without looking at the other side too.
It's funny, one secretly hiding an agenda that will damage the environment, and another trying to profit off their very opponents' lies.
Either way, the common man (us) will get screwed over
Originally posted by Aristophrenia
You see this is what is so utterly ridiculous about denialists - - random quotes, no context, no links, and above all NO DATES. The only dates available are inside the quotes and these generally appear to be from 20 years ago - all copy and pasted do doubt from some template response of 6 quotes which are all that are needed in the face of almost universal and total agreement on this issue - even from the most ardent denialists - absolutely mind numbingly ridiculous.
Like I said - things are not as obvious as they seem. You need more than just logic. Logic is important, but it can also fool you if you get too cocky with it. It's more important to have diligence and the patience and humility to examine ALL the evidence before making a conclusion.