Re: An Early Kwaaaaanzaa gift for CourageWolf
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Scott E White</div><div class="ubbcode-body"><object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/DRaeEIN5Sh8"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/DRaeEIN5Sh8" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object> </div></div>
That vid is a blast from the past. It's old hat trickery though.
"Sometimes a house gets warmer even when the central heating is turned off. Does this prove that its central heating does not work? Of course not. Perhaps it's a hot day outside, or the oven's been left on for hours.
Just as there's more than one way to heat a house, so there's more than one way to heat a planet.
Ice cores from Antarctica show that at the end of recent ice ages, the concentration of carbon dioxide in the atmosphere usually started to rise only after temperatures had begun to climb. There is uncertainty about the timings, partly because the air trapped in the cores is younger than the ice, but it appears the lags might sometimes have been 800 years or more.
This proves that rising CO2 was not the trigger that caused the initial warming at the end of these ice ages - but no climate scientist has ever made this claim. <span style="font-weight: bold">It certainly does not challenge the idea that more CO2 heats the planet.</span>
We know that CO2 is a greenhouse gas because it absorbs and emits certain frequencies of infrared radiation. Basic physics tells us that gases with this property trap heat radiating from the Earth, that the planet would be a lot colder if this effect was not real and that adding more CO2 to the atmosphere will trap even more heat.
What is more, CO2 is just one of several greenhouses gases, and greenhouse gases are just one of many factors affecting the climate. There is no reason to expect a perfect correlation between CO2 levels and temperature in the past: if there is a big change in another climate "forcing", the correlation will be obscured."
http://www.newscientist.com/article/dn11....html?full=true
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Scott E White</div><div class="ubbcode-body"><object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/DRaeEIN5Sh8"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/DRaeEIN5Sh8" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object> </div></div>
That vid is a blast from the past. It's old hat trickery though.
"Sometimes a house gets warmer even when the central heating is turned off. Does this prove that its central heating does not work? Of course not. Perhaps it's a hot day outside, or the oven's been left on for hours.
Just as there's more than one way to heat a house, so there's more than one way to heat a planet.
Ice cores from Antarctica show that at the end of recent ice ages, the concentration of carbon dioxide in the atmosphere usually started to rise only after temperatures had begun to climb. There is uncertainty about the timings, partly because the air trapped in the cores is younger than the ice, but it appears the lags might sometimes have been 800 years or more.
This proves that rising CO2 was not the trigger that caused the initial warming at the end of these ice ages - but no climate scientist has ever made this claim. <span style="font-weight: bold">It certainly does not challenge the idea that more CO2 heats the planet.</span>
We know that CO2 is a greenhouse gas because it absorbs and emits certain frequencies of infrared radiation. Basic physics tells us that gases with this property trap heat radiating from the Earth, that the planet would be a lot colder if this effect was not real and that adding more CO2 to the atmosphere will trap even more heat.
What is more, CO2 is just one of several greenhouses gases, and greenhouse gases are just one of many factors affecting the climate. There is no reason to expect a perfect correlation between CO2 levels and temperature in the past: if there is a big change in another climate "forcing", the correlation will be obscured."
http://www.newscientist.com/article/dn11....html?full=true
