Cecil Moore wrote:
Michael Coslo wrote:
Man has no effect upon the weather? Fine, show me the mechanism by
which the retention of heat in the atmosphere is not affect by the
percentage of greenhouse gases and water vapor. We would not exist
without the effect, so discarding the effect is impossible.

Therefore, get rid of all the water and CO2?

Hmmm, did you get that I was inferring that from saying we would not
exist without the Greenhouse effect? I'm not trying to eliminate everyone.




It
appears from the following graph that C02 density
is a lagging indicator introducing the next ice age.
25000 years from now, those greenhouse gases will
come in really handy.

Aren't you arguing both sides of the issue now, Cecil? If Greenhouse
induced warming is bogus, then those gases won't come in handy, will they?

Given that climate change is going to happen regardless of human input,
I'd make a guess that at the turning point of a heating cycle, the
oceanic currents will shift, due to loss of ice blockage at the poles.
Then, the change is agumented/mitigated by solar output. Also
augumenting/repressing is effects such as atmospheric dust and sulfur
dioxide content, and yes, the amount of greenhouse gases in the atmosphere.

All this gives rise to varying average temperatures, and depending on
the timing, can make a greater or lesser cooling or heating effect.

Now given that there is a lot of natural variability, does it follow
that humans should pay no mind to their own additions to the load?

I believe that we need to find out the effect, and the extent of the effect.

Taking the idea of the greenhouse gases coming in handy, I can envision
being at one of those sharp drops in Temperature, and using gases to
moderate the temperature. There is a lot of Methane in the form of
clathrate hydrates, that might just spell the survival of humanity. Or
maybe not. Maybe we should know what it will do.


http://upload.wikimedia.org/wikipedi...core-petit.png

Looks to me like a pretty fair correlation, Cecil. Now what I am
interested in is the event that occurred at those peaks, and also the
valleys. It's fairly sharp. I don't doubt that as things rapidly cooled,
that there was a reduction in CO2 in the atmosphere. What was the cause?
It's a great graph for speculation. Interestingly regular.

- 73 de Mike N3LI -