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- Path: sparky!uunet!gatech!rutgers!uwvax!daffy!skool.ssec.wisc.edu!tobis
- From: tobis@skool.ssec.wisc.edu (Michael Tobis)
- Newsgroups: sci.environment
- Subject: Re: Gallup Poll on Global Warming
- Message-ID: <1992Sep14.171454.11959@daffy.cs.wisc.edu>
- Date: 14 Sep 92 17:14:54 GMT
- References: <1992Sep8.201012.3286@meteor.wisc.edu> <6195@taurus.cs.nps.navy.mil> <dhalliwe.716066187@muskwa.ucs.ualberta.ca> <1992Sep9.222855.25704@meteor.wisc.edu> <dhalliwe.716173595@muskwa.ucs.ualberta.ca> <STEINLY.92Sep11141803@topaz.ucsc.edu> <dhalliwe.716273811
- Sender: news@daffy.cs.wisc.edu (The News)
- Organization: Space Science and Engineering Center, UW Madison
- Lines: 34
-
- In article <1992Sep14.121231.17480@wega.rz.uni-ulm.de>, SCHLOERER@rzmain.rz.uni-ulm.de (Jan Schloerer) writes:
- |> In <STEINLY.92Sep12144323@topaz.ucsc.edu>
- |> steinly@topaz.ucsc.edu (Steinn Sigurdsson) wrote :
- |>
- |> Probably it's Robert A. Berner, Paleo-CO2 and climate, Nature 358
- |> (9 July 1992), 114.
-
- Owing to vagaries of the UW library system, I have difficulty getting
- to the most recent issues so I can't comment on this.
-
- |>In Thomas J. Crowley and Gerald R. North, Paleoclimatology,
- |> Oxford Univ.Press, New York 1991 (was finished sometime in 1990)
- |> which I haven't handy, I remember having read about the same. Again,
- |> the warm and cool epochs of the past 500+ million years more or less
- |> fitted in with the CO2 record, the Ordovician glaciation was "the"
- |> puzzle, and, as far as I recall, no plausible explanation was yet
- |> known for that puzzle.
-
- Crowley & North p 226 (re Ordovician glaciation):
-
- "How can extensive ice sheets and high CO2 coexist? One
- consideration involves the seasonal cycle - if the pole
- is located in coastal regions there may be a small seasonal
- cycle because of the proximity of water. Summer temperatures
- might not get above freezing even with higher CO2. The above
- hypothesis has been tested with EBMs [energy balance models] ...
- Glaciated conditions may still be possible for higher CO2
- levels if the pole is located in coastal regions. Thus a
- perplexing paleoclimate paradox may be resolvable in an economic
- way and in a manner entirely consistent with present climate
- theory. However, this conclusion warrants considerably more
- testing before it can be accepted."
-
- mt
-