Is the current fear over climate change justified?

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Is the current fear over climate change justified?

It seems our world has been through much warmer periods in the recent past, and that what we experience now may just be part of the warming and cooling cycle.

... Quote:
The fact is that when the earth has warmed a little bit, the amount of carbon dioxide in the atmosphere follows along behind the warming. It does not precede it and, therefore, could not be the cause.


As illustrated in this chart of ice core data from the Soviet Station Vostok in Antarctica, CO2 concentrations in Earth’s atmosphere move with temperature. That is, not the other way around.

Moreover, Climate change is controlled primarily by cyclical eccentricities in Earth’s rotation and orbit, as well as variations in the sun’s energy output.

'Greenhouse gases' in Earth's atmosphere also influence Earth's temperature, but in a much smaller way. Human additions to total greenhouse gases play a still smaller role, contributing about 0.2% - 0.3% to Earth's greenhouse effect.

Approximately 99.72% of the 'greenhouse effect' is due to natural causes - mostly water vapor and traces of other gases, which we can do nothing at all about. Eliminating human activity altogether would have little impact on climate change.


Much more on the site

 http://donkeysview.blogspot...
By netchicken: posted on 30-7-2007

Here is another article on the natural warming and cooling cycle of the earth

Human activities have little to do with the Earth's current warming trend, according to a new book by Denis Avery and Fred Singer, Adjunct Scholars with the National Center for Policy Analysis (NCPA). In fact, the book concludes that global warming and cooling seem to be part of a 1,500-year cycle of moderate temperature swings.

"The evidence supporting a 1,500- year cycle is too great to dismiss," said S. Fred Singer, co-author of the book, professor emeritus of environmental science at the University of Virginia and president of the Science and Environment Policy Project.

"Evidence from every continent and ocean confirms the 1,500-year cycle," added Dennis Avery, senior fellow at the Hudson Institute and the book's other co-author.

According to Avery and Singer, within the 90,000-year Ice Age cycles, the Earth also experiences 1,500-year warming-cooling cycles. The current warming began about 1850 and will possibly continue for another 500 years.

Their findings are drawn from physical evidence of past climate cycles that have been documented by researchers around the world from tree rings and ice cores, stalagmites and dust plumes, prehistoric villages and collapsed cultures, fossilized pollen and algae skeletons, titanium profiles and niobium ions, and other sources.

 http://eteam.ncpa.org/news/...
By netchicken: posted on 30-7-2007

Historically when the Romans were in England, they grew grapes as far north as York. Thats how they could march around in those small metal skirts.

However only a few 100 years back England was so cold that in teh winter they had to live on pigeons, nothing else would surivie the winter apart from their housed stock, and the Thames was frozen over enough to have parties on it.

The climate swings warm, dcold, etc, its just swinging cold now.

Remember back in the 90's when there were the pronouncements of doom over a new iceage? What happened to all those doom laden predictions?

Here we go...

 http://www2.sunysuffolk.edu...

... Quote:
The cold began on January 6, 1709, and lasted in all its rigor until the twenty-fourth. The crops that had been sewn were all completely destroyed.... Most of the hens had died of cold, as had the beasts in the stables. When any poultry did survive the cold, their combs were seen to freeze and fall off.

Many birds, ducks, partidges, woodcock, and blackbirds died and were found on the roads and on the thick ice and frequent snow. Oaks, ashes, and other valley trees split with cold.

Two thirds of the vines died.... No grape harvest was gathered at all in Anjou.... I myself did not get enough wine from my vineyard to fill a nutshell.



Yet earlier it was a warm period
 http://www2.sunysuffolk.edu...

The very warm climate during the MWP allowed this great migration to flourish. Drift ice posed the greatest hazard to sailors but reports of drift ice in old records do not appear until the thirteenth century (Bryson, 1977.)

The warmer climate would also result in a greater harvest in Iceland than would be experienced today so the land must have looked more inviting in the past than it does today.
By netchicken: posted on 30-7-2007








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