Originally Posted by
Through
Bray D and Hans von Storch conducted surveys of climate scientists from as many countries as they could in 1996 and again in 2003. They are currently preparing to conduct another repeat survey. These surveys show that a large proportion of climate scientists disagree that human activities cause global warming.
I have taken a keen interest in Greenhouse Theory and the subsequent Global Warming, Climate Change and Antropogenic Global Warming since I first discovered the theory in Environmental Chemistry around 1981.
Having changed my mind twice, I now disagree that human activites are the main or even a significant cause of global warming, climate change or anything else that you choose to call it.
My reasons are purely scientific and rely on actual scientific evidence, as published in scientific papers.
I have a great many friends, colleagues and associates who are scientists and engineers at all levels from graduates to Professors Emeritus. On the whole, I have to report that more of the scientist I speak to, also disagree that carbon dioxide causes global warming.
When I meet scientists who agree that carbon dioxide cause global warming, I find that many have not investigated the available evidence and cannot sustain a logical debate.
Of those who can argue beyond the basics, there are two groups. One group go off to try and find better arguments. The other group avoid arguing over the real evidence, but rather decide to agree to disagree and cling to the theory and models. More about models later.
Rothman D H, 2002. Atmospheric carbon dioxide levels for the last 500 million years. Proceedings of the National Academy of Sciences USA 99: 4167 - 4171. Was able to show not only that carbon dioxide levels were up to 4 times as high as they were today, but also that carbon dioxide history "exhibits no systematic correspondence with the geological record of climatic variations at tectonic time scales."
If Greenhouse Theory was correct, carbon dioxide at four times the levels of today, would cause rapid warming, increasing carbon dioxide, even more rapid warming and so on. This means that we humans are living proof that carbon dioxide does not cause global warming, since we would not be here to discuss the issue.
Many other research teams have found historical instances when carbon dioxide and temperature did completely different things.
For example,
Fischer H Wahlen, et al 1999. Ice core records of atmospheric CO2 around the last three glacial terminations. Science 283: 1712 - 1714.
Mudelsee M, et al 2001. The phase relations among atmospheric CO2 content, temperature and global ice volume over the past 420 ka. Quaternary Science Reviews 20: 583 - 589.
Pagani et al 2005. Marked decline in atmospheric carbon dioxide concentrations during the paleogene. Science 309: 600 - 603.
If you want more, please message me and I can supply several more references on this theme.
Even one instance of carbon dioxide and temperature going their own separate ways would be enough to disprove the theory that carbon dioxide causes global warming. History shows us that there are many such events.
Many more research teams have published findings that show past temperature changes have led changes in carbon dioxide levels by periods of hundreds to thousands of years.