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<blockquote data-quote="lindisfel" data-source="post: 2221159" data-attributes="member: 57698"><p>Co2 is a complex product of the carbon cycle and released extra carbon, re:anthropogenic release of co2, major volcanic eruptions etc, and temperature variation due to the long earth sun cyclical variations affecting the fertility of oceans plus land available for green biomass.</p><p></p><p>I am ignoring short term variations, re: medeval warm period and similar length cold periods,</p><p>They will average out.</p><p></p><p>We are atm in an interglacial period and the normal co2 is c.280ppm.</p><p>Deep in the ice ages it is 180ppm!</p><p></p><p>NB, before man the temperature change normally controlled the co2. But positive feedback also occurred. It did so at the beginning and end of the ice ages.</p><p>Today it is over 400ppm due to human release of co2 since industrial times. This will result, apparently, to an average temperature increase of 1.5 deg C. As of now.</p><p>So the co2 we produce will control the temperature.</p><p>Problematically this causes up to 6 deg increase in the Arctic and will result in a release of carbon from the permafrost.</p><p></p><p>I dont go in for conspiracy theories.</p><p>The science of co2 retaining infrared radiant heat at the Earth surface has been known for over a hundred year and is quite simple.</p><p></p><p>IMHO Can we do anything about it? Perhaps coronavirus or some other agent will mutate and remove homo sapiens from the planet?</p><p>I can't see Johnson or anybody else getting it sorted. I am glad I will not live to see the next mass extinction, I've seen too many species lost already.</p><p>D.</p></blockquote><p></p>
[QUOTE="lindisfel, post: 2221159, member: 57698"] Co2 is a complex product of the carbon cycle and released extra carbon, re:anthropogenic release of co2, major volcanic eruptions etc, and temperature variation due to the long earth sun cyclical variations affecting the fertility of oceans plus land available for green biomass. I am ignoring short term variations, re: medeval warm period and similar length cold periods, They will average out. We are atm in an interglacial period and the normal co2 is c.280ppm. Deep in the ice ages it is 180ppm! NB, before man the temperature change normally controlled the co2. But positive feedback also occurred. It did so at the beginning and end of the ice ages. Today it is over 400ppm due to human release of co2 since industrial times. This will result, apparently, to an average temperature increase of 1.5 deg C. As of now. So the co2 we produce will control the temperature. Problematically this causes up to 6 deg increase in the Arctic and will result in a release of carbon from the permafrost. I dont go in for conspiracy theories. The science of co2 retaining infrared radiant heat at the Earth surface has been known for over a hundred year and is quite simple. IMHO Can we do anything about it? Perhaps coronavirus or some other agent will mutate and remove homo sapiens from the planet? I can't see Johnson or anybody else getting it sorted. I am glad I will not live to see the next mass extinction, I've seen too many species lost already. D. [/QUOTE]
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