Skepticism on climate change - The Boston Globe
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There has been a recorded trend of global (air and sea) temperature warming. Anyone who denies that is not looking at the data objectively, IMO. There is a correlation between greenhouse gases and the warming is in dispute by two hard core sectors of science and education guesses, but I believe that the correlating data is strongly suggestive of a cause and effect scenario.
In the past, I cited links to observed air and sea temperature rises, showed pictures and presented data of glacial melt and retreats (search this forum for those threads), but none of the critics of global warming responded when I asked for comments on the evidence. If you were among that group of two or three -- it is pointless to reply. I defend against superficial barbs in response to data. ;) -
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the experiment I am referring to is where they duplicated the atmosphere and added the same gases they attribute to global warming. It caused a warming. But you're right, all that laboratory experimentation is nonsense............Fin D likes this. -
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If you are harping on the fact that they can not implement the system as a whole exactly in the lab, those wonderful computers you were harping on can. :up: Not really sure what climate drivers you are referring to? -
Unfortunately, we are on the verge of a major cooling period. We are teetering on the back edge of one of the few and very coveted climatic optimums of the last 400,000 years. As you can see from below, the last half million years were dominated by ice age climates.
Gold (global warming) = life
Light Blue (global cooling) = mass starvation and death.
Sorry, but the billions wasted on Kyoto protocol should instead be used to prepare humanity for the inevidable. -
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Ancient shells tell tale of climate change — Saeon
Ancient shells tell tale of climate change
by Vene — last modified 2007-11-22 08:24
The shell is the thermometer that indicates the growth temperature of a fossil.
By studying the chemical composition of ancient marine fossils, researchers have found new evidence that greenhouse gases such as carbon dioxide have a big impact on climate.
The researchers used a new method of studying marine fossils to learn temperatures millions of years ago, turning each ancient shell or piece of coral into a climate thermometer.
"All of the information needed to study the surface temperature at the time the animal lived is stored in the fossil itself," said Rosemarie Came of the California Institute of Technology, whose study appears in the journal Nature.
This new method relies on a study of rare clumps of oxygen and carbon isotopes - charged particles - that bond with each other. This bonding varies depending on surface temperature, with more formed at low temperatures and fewer formed at higher temperatures.
By knowing the age of the marine fossil and measuring the concentration of these isotopes, the scientists can tell the temperature of the seawater in which they lived.
"The shell is the thermometer," said John Eiler, a Caltech professor of geochemistry who worked on the study. He said the researchers studied the concentration of these isotopes, which are made up of oxygen-18 and carbon-13 atoms.
"We measure how many are stuck to each other rather than being randomly scattered. That tells us the growth temperature of that fossil," Eiler said.
The method differs from the current approach that involves a study of both the fossil's carbon and oxygen content and the knowledge about the chemistry of ancient seawater.
Using this new method, researchers studied fossil growth temperatures from two ancient time periods to see if changes in atmospheric carbon dioxide are actually linked with temperature change, an important part of understanding climate change.
They studied fossils from the Silurian period about 400 million years ago, during which carbon dioxide levels are believed to have been 10 times higher than at present.
They compared these with fossil temperature readings in the Carboniferous period, roughly 300 million years ago, during which atmospheric carbon dioxide concentrations are thought to have resembled current levels.
"Our study found that in fact there was a huge temperature change - that the time of high carbon dioxide was a time of quite high temperature in tropical oceans, about 34 degrees centigrade (93 F)," Eiler said. "If you got in it, you would think it was a pretty warm bath."
Based on this finding, the researchers believe they have fossil evidence that changes in atmospheric carbon dioxide are associated with changes in temperature.
"It shows that carbon dioxide has been a powerful driver of climate change in the Earth's past," Eiler said.
Source: Reuters News Service -
Of course these guys wouldn't dare mention the Orodovian period, when we were in the depths of the coldest ice age on record, all while Co2 levels were 12 TIMES HIGHER than today. Good grief, deliberately misleading people is rewarded with more grant money. When is this **** gonna end. -
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It's snowing in San Antonio Texas. 1st time since 1941.
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