Cecil Moore wrote in news:Pzy_j.1428$uE5.167
@flpi144.ffdc.sbc.com:

M0WYM wrote:
So you can't trust statistics - wow that's news.

Can we trust the statistic that says the global-warming/ice-age
cycle has repeated itself at 90K-150k year intervals for the
last half million years?

How many of those cycles have been influenced by the release of green
house gases by humans?

It becomes almost a non-sequitar to bring that out.

But in search of an answer to your questions:

yes, there appears to be cyclic warming/cooling going on.

This warming/cooling has many possible sources. We're finding outh what
they are at this time. Some seem pretty likely, and some are not known
as of yet. CO@ levels look pretty convincing, and things like th
eMaunder minimum are almost just speculation.

Does the past allow us to predict what is going to happen tomorrow? Not
even close. All the cycles we have can only be applied after the fact.

That one is very important, because each and every cycle has
individuality. I've just seen something about a meteoric impact possibly
affecting the Clovis culture, and possible the glacier flow pattern into
the arctic and Atlantic Ocean. That is an individual event, not likely
to be repeated.

Neither is the release of large amounts of sequestered carbon. This can
happen in more than one fashion. It might come about through large scal
volcanic activity. It also might come about through the combustion of
those carbon bearing minerals. The source of the release is
inconsequential, the effects are not.

- 73 de Mike N3LI -