Re: Biggest rise in CO2 for 800,000 years
- From: " cupra" <NOcupra.sSPAM@xxxxxxxxx>
- Date: Tue, 5 Sep 2006 07:41:14 +0100
iiiiDougiiii wrote:
http://news.independent.co.uk/environment/article1362736.ece
" The rapid rise in greenhouse gases over the past century is
unprecedented in at least 800,000 years, according to a study of the
oldest Antarctic ice core which highlights the reality of climate
change.
Air bubbles trapped in ice for hundreds of thousands of years have
revealed that humans are changing the composition of the atmosphere in
a manner that has no known natural parallel.
Scientists at the British Antarctic Survey (BAS) in Cambridge have
found there have been eight cycles of atmospheric change in the past
800,000 years when carbon dioxide and methane have risen to peak
levels.
Each time, the world also experienced the relatively high temperatures
associated with warm, inter-glacial periods, which were almost
certainly linked with levels of carbon dioxide and possibly methane in
the atmosphere.
However, existing levels of carbon dioxide and methane are far higher
than anything seen during these earlier warm periods, said Eric Wolff
of the BAS..."
What were the levels 800,001 years ago?
.
- References:
- Biggest rise in CO2 for 800,000 years
- From: iiiiDougiiii
- Biggest rise in CO2 for 800,000 years
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