On 18/11/15 22:41, mcp wrote:
On Wed, 18 Nov 2015 22:13:24 +0000, dennis@home
wrote:

On 18/11/2015 20:49, mcp wrote:

Of course water vapour has the biggest radiative effect but the amount
of water in the atmosphere is driven by temperature. I love the way
this fact always gets trotted out as if it's some kind of relevation.


Not exactly true though is it?
If water vapour were driven by temp and it is the biggest greenhouse gas
then we would have runaway increases in both.

This indicates that the expected effect of greenhouse gas isn't quite right.

Would you like to inform us of why it doesn't runaway?

Mainly by increasing cloud cover.

So does more water and cloud make the earth warmer, or colder?

Are cloudtops above or below the area of greatest CO2 concentration?

How much radiant energy do clouds reflect back to space?

How much radiant energy does snow reflect back to space?

How much radiant energy do clouds reflect back to earth at night?

How does the turbulent nature of convection get modelled in the standard
climate models?

Are any of the above issues correctly handled in any of the climate models?


--
the biggest threat to humanity comes from socialism, which has utterly
diverted our attention away from what really matters to our existential
survival, to indulging in navel gazing and faux moral investigations
into what the world ought to be, whilst we fail utterly to deal with
what it actually is.