[adsi] Re: [them] Arctic ice cap oscillations have happened before
- From: "Ken Schmahl, P.E." <kschmahl@xxxxxxxx>
- To: adsi@xxxxxxxxxxxxx
- Date: Fri, 16 Nov 2007 13:58:30 -0800
Fox news! Well, I won't have to read the article then to believe 'em.
Sorry, but Fox has lost its credibility. I'll have to go back to the
original studies to get the truth on this.
To be clear, I'm bitter about Fox News, and not you Milt.
ks
On 11/16/07, Milton Scritsmier <Milton_Scritsmier@xxxxxxxxxxxxxx> wrote:
>
> Once again, scientific results are coming in showing that the
> interaction between the climate and mankind is not nearly so
> simple as "An Inconvenient Truth" would have us believe. This
> time it has to do with the shrinking of the arctic ice cap over
> the last few decades (and by the way, how often do you hear
> that the antarctic ice cap is now at a maximum?). According to
> two independent scientific studies, it appears that the arctic
> ice cap has gone through rapid periods of shrinking and
> expanding over at least the last few hundred years, well before
> mankind had any real effect on the climate.
>
> For a quick overview of the first study, here is what Fox News
> Channel's "Grapevine" on "Special Report with Brit Hume" had to
> say:
>
> ===
>
> What NASA Says Is Really Happening to the Arctic Ice Cap
>
> Friday, November 16, 2007
>
> By Brit Hume
> Fox News Channel
>
> Perfectly Natural
>
> Many global warming activists point to changes in the arctic
> icecap as proof of the dangerous effects of man-made global
> warming. Now a report from NASA's Jet Propulsion Laboratory
> says those changes are in fact the result of natural ocean
> circulation patterns. A team of scientists used satellite and
> deep-sea pressure gauge data to monitor ocean patterns.
>
> Says team leader James Morison of the University of
> Washington's Polar Science Center — "Our study confirms many
> changes seen in upper Arctic Ocean circulation in the 1990s
> were mostly decadal in nature, rather than trends caused by
> global warming."
>
> ===
>
> The "Grapevine" report does leave out that Dr. Morison believes
> that mankind-induced global warming is accelerating the
> oscillations in the arctic ice cap. The JPL news release on Dr.
> Morison's findings is at
>
> http://www.jpl.nasa.gov/news/news.cfm?release=2007-131
>
> Significantly, another independent study also shows that the
> arctic ice cap has gone through rapid oscillations. Dr. Simon
> Belt and his team from the University of Plymouth in England
> looked for a particular lipid produced by an algae that can
> only live in sea ice. As this lipid is produced, it drifts down
> to the ocean bottom and becomes embedded in the sediment. As
> the sediment builds up over time, the amount of this lipid in
> each layer of the sediment gives an indication of the amount of
> algae at that time, and hence the amount of sea ice. By
> collecting various "sediment cores" and measuring the lipid,
> Dr. Belt and his team have found that the arctic ice cap has
> varied greatly in the last several hundred years. Dr. Belt
> believes that mankind's recent changes to the environment may
> be making it harder for arctic ice to recover from its latest
> retreat. But he also notes that "Significantly, periods of sea
> ice cover frequently coincide with dramatic changes to human
> populations due to famines and illnesses." In other words,
> whether or not mankind is changing the climate, the climate
> still has had a powerful effect on mankind.
>
> A good article about Dr. Belt's research can be found at
>
> http://news.bbc.co.uk/2/hi/science/nature/7044808.stm
>
> If you get HDNet on satellite or cable, check out this week's
> "Dan Rather Reports" entitled "A Crack in the Ice". There's an
> interview with Dr. Belt on the research vessel where he did his
> study discussing his results and showing his team collecting
> and analyzing sediment.
>
>
>
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