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Politics : Formerly About Advanced Micro Devices
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TideGlider
To: J_F_Shepard who wrote (1161995)9/5/2019 3:55:17 PM
From: Sdgla1 Recommendation  Read Replies (1) of 1576346
 
Climate myths: Ice cores show CO2 increases lag behind temperature rises, disproving the link to global warmingThe lag proves that rising CO2 did not cause the initial warming as past ice ages ended, but it does not in any way contradict the idea that higher CO2 levels cause warming.

EARTH 16 May 2007
By Michael Le Page and Catherine Brahic

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.

Initial warmingThis 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. It certainly does not challenge the idea that more CO2 heats the planet.

Read more: newscientist.com
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