It's Herby, actually. The clue is in the way I spell it.
=Perhaps, therefore, you could explain and/or describe this mechanism, in language which is brief and simple enough for us all to be able to understand.
I don't have time this evening to go into it in detail. Suffice to say that energy reaching the Earth from the sun does so at frequencies which are not absorbed by carbon dioxide, but energy re-emitted is at infra-red frequencies which are absorbed and thus trapped by CO2. Very simple chemistry, and chemistry which has been well understood for over a century.
Also you claimed:
[=Looks like water vapour is the problem then. Why hasn't GB taxed it yet then?
The area of most concern is the upper atmosphere, where there is little water vapour, but where increasing concentrations of CO2 are having a significant impact. As an aside, a likely outcome of this, though, is that as the atmospheric temperature increases, so does the amount of water vapour it can hold, which is only likely to accelerate atmospheric warming.
Finally I'd love to see your temperature rise data and time scale data plus subsequent maths for this little gem:
=Do you know nothing about the sudden inundation of the Black Sea? Our distant ancestors have told us about it in many ways, including written and oral. What mechanism caused that apart from a rapid rise in temperature and subsequent melting of land based ice.
Local changes at the end of the last ice age were moderately rapid - perhaps over as little as 70-100 years (some authorities claim even shorter time-spans). The adjustment of global mean temperatures was much more gradual than that. We are discussing a global situation here, not local climatic changes.
As is so often the case in this type of discussion, you have in this thread digressed, perhaps in an attempt to deflect - once in reference to the millenium bug, implying that that was all just a scare story. Perhaps it has not occurred to you that nothing came of it because tens of thousands of people worldwide worked very hard to make sure of that. Secondly, here, in reference to BSE - again, I suspect, to try and make the point that if one scare story turns out to be false, they must all therefore be false. This is, of course, flawed logic (again), and sadly you have chosen particularly poor examples. The millenium bug was indeed a serious threat, averted because it was identified in time. As for BSE, we still have no idea if this is a problem, or will be a problem, owing to the protracted incubation period of this nasty disease.
Nothing fatuous there, I think you will find.