Mar 03 2014
Well its about time I get back to current events. The big milestone at work is past, so we can all go back to something resembling a 40 hour work week. [Note: the emphasis]. So let’s begin with reality – and climate.
I ran across this article on WUWT, and I really wanted to emphasize a portion of the document:
Perhaps the simplest way to expose the fallacy of “extreme certainty” is to look at the historical record. With the historical record, we do have some degree of certainty compared to predictions of the future. When modern life evolved over 500 million years ago, CO2 was more than 10 times higher than today, yet life flourished at this time. Then an Ice Age occurred 450 million years ago when CO2 was 10 times higher than today. There is some correlation, but little evidence, to support a direct causal relationship between CO2 and global temperature through the millennia. The fact that we had both higher temperatures and an ice age at a time when CO2 emissions were 10 times higher than they are today fundamentally contradicts the certainty that human-caused CO2 emissions are the main cause of global warming.
Today we remain locked in what is essentially still the Pleistocene Ice Age, with an average global temperature of 14.5°C. This compares with a low of about 12°C during the periods of maximum glaciation in this Ice Age to an average of 22°C during the Greenhouse Ages, which occurred over longer time periods prior to the most recent Ice Age. During the Greenhouse Ages, there was no ice on either pole and all the land was tropical and sub-tropical, from pole to pole. As recently as 5 million years ago the Canadian Arctic islands were completely forested. Today, we live in an unusually cold period in the history of life on earth and there is no reason to believe that a warmer climate would be anything but beneficial for humans and the majority of other species. There is ample reason to believe that a sharp cooling of the climate would bring disastrous results for human civilization.
What the settled science indicates here is very important. We live – today – on an an unusually cold Earth.
Got that? Compared to recent geological history, the Earth we inhabit is colder than usual. The Little Ice Age we have been coming out of (until recently) was even a more rare event. That means the odds are Earth’s climate will warm up again. It really is only a question of when, not if. And it will do so whether humans are around or not.
So wen people babble on about Global Climate Change and the fear of a warmer Earth, they should be immediately challenged to explain why the current rare COLD conditions should be maintained instead of going back to the norm? And even better, how could humankind achieve such a reversal of natural forces beyond our current comprehension?
And when these scientifically challenged (and yes, this group does include people with PhDs) point to CO2, then simply point them to the other historic fact: it has been much warmer and much colder than today on Earth. And during some of those periods, there has been TEN TIMES HIGHER than today! That means managing CO2 will do NOTHING to warm or cool the planet.
These two facts – scientifically based and not seriously challenged in terms of what happened in Earth’s geologic past – obliterate the entire argument about Global Warming induced by us meager humans via CO2. Vaporized as a logical conclusion.
Michael Mann might have an ego the size of a planet (dude: that is a comedic analogy to a paranoid robot in Hitchhikers Guide to The Galaxy – so put your lawyers away), but just because he thinks he can change the forces of nature does not mean he actually can!