From: "Robert Comer" 

>That does not even make sense. It's far too small a percentage to make
>squat difference in >heat retention.

Exactly, that doesn't make sense -- that's WAY to simple a model to say
anything about atmosphere, remember there's sunlight component and a heat
radiation into space component.  the CO2 allows for less radiation, that's
the problem, not that the CO2 physically makes a difference in how much
heat is in the atmosphere.  Think of how much warmer a real greenhouse is
compared to outside the greenhouse...

>Second question, what causes the drop in CO2 levels over the 400K years?
>Plants? Ok >so if plants are removing CO2 and they have existed pretty
>constantly thru the last 400K >years, then what is releasing CO2 and
>causing the levels to rise so sharply? I mean why >didn't CO2 levels drop
>to zero if nothing is producing CO2? It wasn't us.. so obviously >there is
>some huge production of CO2 happening naturally.

There's various things that can cause a CO2 drop, one being plants, others
are diatoms (can be included in plants I guess), and then there's
absorption in things like water. (water absorption makes for more acidic
water btw, which is not that great).  I expect there are other ways too...

>then what is releasing CO2 and causing the levels to rise so sharply? I
>mean why didn't >CO2 levels drop to zero if nothing is producing CO2? It
>wasn't us.. so obviously there is >some huge production of CO2 happening
>naturally.

Very true, CO2 comes from other sources than just us!  We're adding to that
natural production though...  Also remember that there are other greenhouse
gases than CO2, and some are quite a bit more efficient at it than CO2 --
one being methane.

>Now, if you can't answer that question, then how do you know what the cause
>of the >current CO2 rise is? Can you rule out the historic cause?

I did answer that question, it is natural sources *and* manmade.  We never
had the manmade sources before and, that's what could be the straw that
broke the camels back.

>Lastly, note the peak at 100K years ago, see the platau? If we assume CO2
>does cause >warming, or at least happens in conjunction with warming, is
>that platau caused because >ice isn't a good measure of peak CO2 levels (ie
>it melts when the temperature goes up >and while it's melting it doesn't
>record the CO2 level)?

I don't think so, all melting does is erase layers, the layers that are
there had to have precipitated out of the air at some time and will have
the proper markers.  Now if it leaches these markers out at a lower temp
than what melts ice, I suppose it could have some effect, but I really
don't know enough about that.

--
Bob Comer





"Geo."  wrote in message
news:45daee95$4{at}w3.nls.net... Ok, First facts.



as you can see from the partial graph (notice how the one side starts at
200, and please ignore the unproven title claim) you can see that CO2 level
as a percentage of air volume varies between .02% and .04%.

Now the question. If we take a clear box 1 meter x 1 meter x 1 meter and
fill it with air and another box just like it also filled with air and in
the second box we increase the CO2 level to .05% by volume, this second box
is going to get measurably hotter than the first when sunlight is shined on
it?

That does not even make sense. It's far too small a percentage to make
squat difference in heat retention.

Second question, what causes the drop in CO2 levels over the 400K years?
Plants? Ok so if plants are removing CO2 and they have existed pretty
constantly thru the last 400K years, then what is releasing CO2 and causing
the levels to rise so sharply? I mean why didn't CO2 levels drop to zero if
nothing is producing CO2? It wasn't us.. so obviously there is some huge
production of CO2 happening naturally.

Now, if you can't answer that question, then how do you know what the cause
of the current CO2 rise is? Can you rule out the historic cause?

Lastly, note the peak at 100K years ago, see the platau? If we assume CO2
does cause warming, or at least happens in conjunction with warming, is
that platau caused because ice isn't a good measure of peak CO2 levels (ie
it melts when the temperature goes up and while it's melting it doesn't
record the CO2 level)?

Geo.

--- BBBS/NT v4.01 Flag-5