Article View: sci.energy
Article #2776Re: carbon in atmosphere HIGHEST ever
From: Peter Webb
Date: Sat, 18 Jun 2011 13:10
Date: Sat, 18 Jun 2011 13:10
33 lines
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2660 bytes
"Sam Wormley" <swormley1@gmail.com> wrote in message news:-Y2dnbMEZMfVBWHQnZ2dnUVZ_rydnZ2d@mchsi.com... > On 6/18/11 7:18 AM, Peter Webb wrote: >> >> "Sam Wormley" <swormley1@gmail.com> wrote in message >> news:-Y2dnbYEZMfQC2HQnZ2dnUVZ_rydnZ2d@mchsi.com... >>> On 6/18/11 7:01 AM, Jim wrote: >>>> So Scinece knows what the CO2 levels were 500 million years ago? Get >>>> real >>>> please. >>>> >>> >>> Proxy data is data that paleoclimatologists gather from natural >>> recorders of climate variability, e.g., tree rings, ice cores, fossil >>> pollen, ocean sediments, coral and historical data. By analyzing >>> records taken from these and other proxy sources, scientists can >>> extend our understanding of climate far beyond the 140 year >>> instrumental record. >>> >> >> And hence can demonstrate that the current atmospheric CO2 levels are >> almost the lowest ever recorded. > > But not the history that includes human beings. We humans > could not have survived on this planet for most of its history. > Yes. For example during snowball earth. But the claim is that CO2 levels are the highest ever. In fact, as you correctly point out, atmospheric CO2 levels have been far, far higher in the past.
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X-Google-Thread: 54ac8f410d,b17555bec477b50f X-Google-Attributes: gid54ac8f410d,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!news1.optus.net.au!optus!newsfeeder.syd.optusnet.com.au!news.optusnet.com.au!not-for-mail From: "Peter Webb" <webbfamily@optusnetDIESPAMDIE.com.au> Newsgroups: sci.energy,alt.politics.democrats.d,talk.politics.misc,dc.politics,sci.physics References: <40248226-2638-4127-8f9a-fc57eebb093a@l6g2000vbn.googlegroups.com> <itgksg$hfb$1@dont-email.me> <d4SdneWh1fVzfWbQnZ2dnUVZ_sSdnZ2d@mchsi.com> <iti43d$pqj$1@dont-email.me> <-Y2dnbYEZMfQC2HQnZ2dnUVZ_rydnZ2d@mchsi.com> <4dfc9788$0$22468$afc38c87@news.optusnet.com.au> <-Y2dnbMEZMfVBWHQnZ2dnUVZ_rydnZ2d@mchsi.com> In-Reply-To: <-Y2dnbMEZMfVBWHQnZ2dnUVZ_rydnZ2d@mchsi.com> Subject: Re: carbon in atmosphere HIGHEST ever Date: Sat, 18 Jun 2011 23:10:17 +1000 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 Lines: 35 Message-ID: <4dfca3c1$0$2444$afc38c87@news.optusnet.com.au> NNTP-Posting-Host: 122.106.220.237 X-Trace: 1308402625 2444 122.106.220.237