Hi Stephen (ref. http://judithcurry.com/2011/10/15/letter-to-the-dragon-slayers/#comment-191200) thanks for once again trying to enlighten Dougy and maybe, just maybe, he’s starting to move ever so slightly those blinkers that the “Slayers” may have given him as a gift when he joined their PSI blogging group. I recall that you made a similar but more detailed explanation for Dougy’s benefit on the 8th Feb. (http://judithcurry.com/2011/10/15/letter-to-the-dragon-slayers/#comment-166940). It had no impression on him then but there is always hope, even with Dougy.
You never did get back about my response regarding Catastrophic Anthropogenic Climate Change (CACC) campaigner Professor Iain Stewart’s deliberately rigged demonstration in the CACC-supporting BBC’s “Climate Wars” propaganda series. In that demo. then Dr. Stewart deliberately tried to mislead the audience into thinking that CO2 is opaque to IR.
I repeat what I said on 8th Feb. QUOTE:
There is one thing that you are totally wrong about, “ .. we know that C02 is opaque to IR. Here is a video that shows how C02 “blocks” IR. http://www.youtube.com/watch?v=SeYfl45X1wo .. ”.
CO2 is NOT opaque to IR, it is opaque to only a very narrow band of IR. Water vapour, which is opaque to much more IR than CO2 is not opaque to all IR. The set-up for the demonstration to which you linked, presented by Professor (then Dr.) Iain Stewart for the BBC’s “Climate Wars” programme was designed by Dr. Jonathan Hare. He was forcewd to rig the set-up in order to give the impression to the viewers that the IR emitted by the candle flame was prevented from reaching the IR camera by the CO2.
Without the use of a 4 micron filter the demonstration would have provided no indication whatsoever that CO2 absorbs any IR. See my comment here on November 6, 2011 at 9:01 am for further details (I’m surprised that you missed it) .. UNQUOTE (http://judithcurry.com/2011/10/15/letter-to-the-dragon-slayers/#comment-166967).
Any comment this time on that bit of BBC CACC propaganda?
Best regards, Pete Ridley