Climate forcing due to optimization of maximal leaf conductance... - Temp goes down with higher CO2

National Academy of Sciences (will be linked downthread when available) ^ | March, 2011 | Prof. David Dilcher

[Ditto]

Whether it is cyclical or not is not germane to this particular discussion.

Looking at your charts, I see that the relative humidity at the 1000 mb range (i.e. sea level to 2000-3000 ft. altitude level is hardly unchanged over the last 60 years. As you go higher to Alpine altitudes to the 600 mb range, where vegetation is far less sparse, the humidity varies greater, and at very high altitudes where there is no vegetation, the variance is greatest.

Frankly, I don't see a correlation to whatever percent of stomata are on vegetation with what the relative humidity is at 40,000 feet altitude. I can't make a logical connection there.

Are jet contrails making the humidity decrease at those altitudes? Is it some solar effect? A change in magnetic flux?

I have no idea, and to postulate when we have no idea of what the humidity of that altitude was 100 years ago let along a 1000 years ago, is jumping the shark.

We have some data over the last 60 year -- a blink of the eye, but it does not make any correlation with less humidity in the stratosphere as far as I can see. Don't jump to conclusions as the Warmers would have us. We understand little to nothing of how the climate works.