February 28, 2007
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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 5, NUMBER 10, OCTOBER 1992
Greenhouse thermostat challenged: Ramanathan and Collins have proposed that
cirrus clouds act to keep sea surface temperatures from rising above
32° C, a mechanism that could limit greenhouse warming. However, a recent
study using satellite data leads others to conclude that no such "thermostat"
mechanism exists. See papers in Nature, July 30, 1992 (listed in Prof. Pub./Gen.
Int.--Science, this GCCD issue--Oct. 1992). An article in Science News (p. 69,
Aug. 1) discusses the continuing debate.
Elevated Antarctic UV: Measurements under the 1990 ozone hole show that
biologically damaging ultraviolet radiation was elevated to several times its
normal value. See Stamnes paper in Prof. Pub./Gen. Int.--Science, this GCCD
issue--Oct. 1992; an article in New Scientist (p. 17, July 18) discusses the
New developments on the carbon budget are presented in four articles in the
August 27, 1992, issue of Nature. (See Prof. Pub./Global Carbon Budget, this
GCCD issue--Oct. 1992.) One of them, by Keeling and Shertz, shows that declining
levels of atmospheric oxygen may be a key to sorting out the fate of fossil fuel
CO2. The papers are discussed in New Scientist, p. 16, Sep. 12.
UK social science research: The Global Environmental Change Program of the
UK's ESRC (Economic and Social Research Council), launched in 1991, now has a
newsletter. The initial eight-page issue describes research teams and projects,
a data network, fellowships, workshops and publications. To receive the three
issues per year or to submit information contact Alister Scott, Environment
Section, Wye College, Wye, Kent, TN25 5AH, UK (tel: 0233-812401).
Forest sector carbon budgets will be studied as part of the NCASI (Nat.
Council of the Paper Industry for Air & Stream Improvement) Global Change
Program. Collaborators are being sought for the analysis, which will cover
current carbon storage and cycling, and mitigation strategies. Contact Eric
Vance, NCASI, POB 141020, Gainesville FL 32614 (904-377-4708, ext. 228).
Global ocean monitoring: The framework for a Global Ocean Observing System
is being established, finally making ocean monitoring the possibility many
oceanographers have sought. The program is an initiative of the International
Oceanographic Commission of UNESCO, in cooperation with WMO and UNEP. See Eos,
pp. 370-371, Sep. 1, 1992.
"Coffins Lift the Lid on Atmospheric Change," S. Adkins, New
Scientist, p. 7, Aug. 29, 1992. Scientists will try to determine the composition
of air in the 1680s by carefully analyzing the contents of three sealed lead
coffins that were discovered in the graveyard of a colonial church in Maryland
"Where is EOS Headed?" L.T. Simarski, Eos, pp. 345-346, Aug. 18,
1992. Discusses scientists' concerns about whether NASA's Earth Observing System
can keep absorbing funding cuts and remain viable.
"Researchers See Obstacles in Using Spy Data," T. Watson,
Nature, p. 178, July 16, 1992. Now that the military has begun to release some
of its previously classified data for environmental research, many scientists
are questioning the usefulness of the observations.
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