J
John Larkin
Guest
On Sat, 28 Nov 2009 16:32:53 -0800 (PST), Bill Sloman
<bill.sloman@ieee.org> wrote:
John
<bill.sloman@ieee.org> wrote:
What could be more real than building things that work?On Nov 27, 8:53 am, John Larkin
jjSNIPlar...@highTHISlandtechnology.com> wrote:
On Fri, 27 Nov 2009 09:41:07 +0000, Martin Brown
|||newspam...@nezumi.demon.co.uk> wrote:
Jan Panteltje wrote:
On a sunny day (Thu, 26 Nov 2009 09:53:04 -0800 (PST)) it happenedBill Sloman
bill.slo...@ieee.org> wrote in
4688b1c8-f155-4b23-bb22-a8e56c28f...@c34g2000yqn.googlegroups.com>:
And even if you assumed CO2 levels did, where did the CO2 come from?
CO2 is being subducted - as carbonate rock - all the time. The
carbonate is unstable once it gets into the outer mantle and comes out
again in volcanic eruptions. The spectacular volcanic eruptions that
created the Deccan Traps and the Siberian Traps released a lot of CO2
in a relatively short time - geologically speaking.
Good, so it does not come from us burning stuff.
We already know how much fuel we burn and the residual amount staying in
the atmosphere is around 60% from Keelings original work at Mauna Lau.
Now refined by NOAA with global monitoring. You can even watch the
fossil fuel CO2 emitted by the northern hemisphere industrial nations
move to the southern hemisphere with a suitable time lag.
AND you can tell it isn't coming out of the oceans because the changing
isotopic signature matches the fossil fuel that we burnt.
Be careful what you wish for...today volcanic activity contributes about
1% of the carbon dioxide net increase. The rest is coming from us. A
reasonably detailed article on CO2 from vulcanism is online at:
http://www.bgs.ac.uk/downloads/directDownload.cfm?id=432&noexcl=true&...
Climate change around the time of the Deccan traps vulcanism 65 Million
years ago was one of the worst periods of global extinction the Earth
has seen. Do you really want to go the way of the dinosaurs?
The fact that some of the laval flow came up through coal fields meant
that they burnt a fair bit of fossil carbon in the process.
It is much more simple (Occam's) to think CO2 levels went up because the =
warmer climate
had more animals populate the earth....
But even that may not be so.
It isn't. there aren't enough animals around to to have much direct
effect on the CO2 level in the atmosphere - if they don't go in for
digging up and burning fossil carbon on an industrial scale.
Good, then we can forget all that Gore stuff about farting cows and pigs that are bad for the world,
and need to be more taxed.
He has a point at least where methane emissions are concerned.
CH4 though short lived is a more potent GHG in the atmosphere than CO2.
And it could be a real menace if we release the huge volumes trapped in
permafrost and oceanic seabed clathrates.
And it would improve the health of the US population to eat a bit less
meat. Japans high life expectancy is in part due to a much better diet.
Regards,
Martin Brown
Don't you people ever do electronic design? One nice thing about
electronics is that you know pretty soon whether you're right or not.
Another is that you can finish one thing and move on to another.
Unfortunately, real life is less accomodating.
John