Weather Banter - View Single Post - Greenhouse Gas Level Not 'Natural Cycle' and Highly Correlated With Warm Climates.

Steve Schulin

In article ,
(Eric Swanson) wrote, in part:

says...

I'm sorry that you're so discombobulated about who's said what on the
issue of the implications of the 800-year lag of CO2 rise behind
temperature rise in ice core. I appreciate the plausibility of your
theory given your assumptions. Even sharing some of those assumptions,
however, is not reason to embrace your theory about the particulars of
the lag.

What theory of mine? ...

Your theory as to why the ice core analyses show CO2 rise lagging
800-1,000 years behind temperature rise.

... Wasn't you that wrote this??

A lag of 800-1,000 years might mean that recent rise in CO2 is
a response to Medieval Warm Period.

It's this "theory" of yours that I find not even remotely plausible and
prompted my reply to this thread. What happened during the so-called WMP has
nothing to do with today's ongoing increase in CO2, AIUI. ...

The fact is we don't know why the CO2 lags temperature. Your notion that
it's due to melting ice is a reasonable one. It could also have been
some other reason, such as upwelling and downwelling changes long after
the warming of surface waters, due to mixing. When you say "AIUI" here
and "the recent well documented increase in atmospheric CO2, which is
rather solidly linked to mankind's emissions", I question the scientific
basis for these comments. If the warming in the distant past resulted in
increased atmospheric CO2 concentrations after 800-1,000 years, perhaps
the same thing is happening now due to what happened, temperature-wise,
800-1,000 years ago.

... You have posted a
notion that has no merit, which I think you realize as you have not provided
any scientific foundation for the claim.

Well, it's one thing to be willing to accept, as a reasonable assumption
for purposes of policy, that man's CO2 emissions are the reason for the
observed rise in atmospheric concentrations. It's quite another matter
to pretend that we understand the ins and outs of why and how atmospherc
CO2 varies. There's very interesting research going on in different
ocean locations trying to help understand. The role of wind patterns is
an example of question which might be vital to understanding.

Very truly,

Steve Schulin
http://www.nuclear.com