What is the percentage of the Earth's warmth that the Earth's hot centre is responsible for? What would be the temperature of the atmosphere if the Earth's centre was 18° C (average temperature on the surface)?
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2$\begingroup$ partly relevant : i.imgur.com/wUb82yS.png $\endgroup$– shreyJan 9, 2017 at 8:19
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$\begingroup$ @shrey Could you please share the whole document $\endgroup$– ProbablyJan 9, 2017 at 11:51
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1$\begingroup$ (around pg 221 ) -- elibrary.bsu.az/azad/new/2194.pdf $\endgroup$– shreyJan 9, 2017 at 11:59
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1$\begingroup$ 0.03% per Wikipedia: en.wikipedia.org/wiki/… $\endgroup$– userLTKJan 10, 2017 at 2:32
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$\begingroup$ Why ask such a what-if about an 18° C core? $\endgroup$– wogslandJan 26, 2017 at 17:56
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1 Answer
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Given the insulating effect of 6370 km of rock (the average radius of the Earth) & its low thermal conductivity, if the temperature at the center of the earth was 18 °C it contribution to warming the atmosphere would be negligible.
The temperature at the center of the Earth is about 7000 °C, while the average temperature of the surface is about 10 °C. So if the temperature at the Earth's center was 18 °C its contribution to the surface temperature would be exceedingly small.
