On Sunday, 25 September 2016 12:14:10 UTC+1, Len Wood wrote:

I'll pitch in for what it's worth.
I think Alastair's cold radiation is referring to net radiative cooling,
i.e. surface (or layer) losing more radiation than gaining, therefore cooling.

Temperature is a on a scale.
It is bad physics to talk about a warm temperature. Temperatures are relative and it is better and correct to talk about a higher temperature rather than hot temperature.
Radiation is also on a scale.
A body is emitting radiation from a point high or low on the scale.
So strictly the terms warm or cold radiation are not allowed.

Having said that, the terms warm and cold temperatures are in common usage and the public don't complain about them.
So perhaps Alastair's cold and warm radiation will also come into commom usage.

If I may I correct you, please:

Heat is relative, temperature is precise, that is why all those relatives in the OP were dying.

Put it anther way, there is a fellow in Coimbatore that has a ladder fixed top and bottom to a wall facing the sun. In sunny weather he is able to make forecasts about earthquakes.

That was because he noticed that on some sunny days it was warm and on others it was cold. It appeared he was receiving the same amount of radiation but it tuns out (presumably) that ice clouds too high to form a cohesive mass were cooling his ladder.

From the positions of the shadows cast he was able to give a broad spectrum forecast, either of large convergence waves; or nothing out of the ordinary "no worries" waves.

What appears to be happening in the mirror experiment, as opposed to the thermograph one, is that the ice is affecting the thermometer in a negative direction. And until someone arranges enough mirrors to demonstrate it; once and for all to see, we are never going to get to the end of this bus crash of an argument to nowhere.

I suggest that some of us, with the ability to arrange such things, have a look at the Youtube videos of converting satellite dishes to mirrors and sets up a couple of them to demonstrate it one way or the other. And until then, just shut the **** up!

All the wrong focii:
https://www.youtube.com/watch?v=3ldwWIPAwqk

Or at least refrain from ad hominem attacks like a bunch of dawlishes.

Meanwhile if you want to know what ice cloud creation appears as in a weather chart take a look at them developing by t+150 in this morning BoM's Southern Hemisphere run 25 September 2016. 06:00 + T+150: (actually 00:00 plus 150.)

http://www.bom.gov.au/australia/char... =Refresh+View

Now all you have to do is wait and see what the world's wettest sea has in its store rooms ready for the day of war.