Sell your sailplane before 2030

Quick Google search says that it is estimated that the temperature at the core of the earth is over 10,000 F. So, there is one whale of a lot of heat being radiated up from below.

And a whole load of rock to insulate us. Average heat flow from the interior is around 0.08W/m^2 at the surface, compared to 700 - 1400W/m^2 from the sun. So yes, the hot core has an effect but it's pretty small.

Not doubting that Man has his local impacts. But to try and imply that we are the cause of all the changes? I think someone has a bit too high an opinion of himself...

We're the cause of one slow trend, superimposed on other trends and other oscillations. We turn trapped carbon into CO2, CO2 absorbs infrared and heats up, so a small change in the 0.04% CO2 atmosphere content means a small but inexorable warming.

The climate in 50 or 100 years is still up for debate, most of it around the effects and prevalence of clouds, but it's never a good idea to crap in your own nest.

Hey ho. Happy Tuesday.

DH