February 28, 2007
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A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 4, NUMBER 12, DECEMBER 1991
Sun and Climate: A recent paper by Danish researchers demonstrates a
remarkable correlation between the global temperature over the past century and
the exact length of the roughly 11-year sunspot cycle. Proof of this correlation
will require several more decades of observation. (See Friis-Christensen and
Lassen, Science, p. 698, Nov. 1, 1991, listed in Prof. Pubs./Of Gen.
Interest, this Global Climate Change Digest issue--Dec. 1991.) Many
previous attempts to establish associations between solar activity and the
atmosphere have proved fruitless, but they generally relied on sunspot number as
an index of solar activity. Even if the relationship is maintained in the
future, significant effects from greenhouse warming are not precluded, and there
is no way of predicting whether the sun's influence would contribute to warming
or cooling. Other implications for greenhouse warming are discussed in Science,
pp. 652-653, Nov. 1, and New Scientist, p. 22, Nov. 23.
"Warmth Doth Stretch Antarctica's Tongues," R. Monasterskey,
Sci. News, p. 311, Nov. 16, 1991. New geological evidence suggests that
the ice shelves surrounding Antarctica have expanded in past warm periods, not
contracted as might be expected. (See Domack et al., Geology, p. 1059,
Nov. 1991, listed in Prof. Pubs./Antarctic Ice Sheet, this Global Climate
Change Digest issue--Dec. 1991.)
"UV Pours Through Ozone Hole," Sci. News, p. 214, Oct.
5, 1991. Ground measurements show that the radiation reaching Antarctica last
summer may have been the strongest the region has experienced since the ozone
layer formed a billion years ago. (See Frederick and Alberts paper listed in
Prof. Pubs./UV Measurements, this Global Climate Change Digest issue--Dec.
"The Restructured Earth Observing System: Instrument Recommendations,"
B. Moore III, Eos, pp. 505, 510, 516, Nov. 12, 1991. Extensive summary
of an October meeting of the Payload Advisory Panel for EOS, which has revised
and reduced the original instrument plan of 1990. Summarizes cost savings of the
revised plan, what has been lost, and what is at risk.
In the Sep. 1991 Global Change NewsLetter (IGBP Secretariat, Roy.
Swedish Acad. Sci., Box 50005, S-104 05 Stockholm, Swed.):
"Strategy for Global Modelling Developed at Stockholm," pp. 1-2.
Report from the third meeting of the Scientific Committee for the International
"Ocean Biogeochemistry and Air-Sea CO2 Exchange," P. Williamson,
T. Platt., pp. 3-4. Discusses multidisciplinary Joint Global Ocean Flux Study
(JGOFS) studies in the North Atlantic that have illustrated the complex nature
of the influence of phytoplankton on the exchange of CO2 between the ocean and
"Past Global Changes: Defining Research Activities," J. Eddy, pp.
5-8. A synopsis of the implementation plan for PAGES (Past Global Changes),
which grew out of the first meeting of the PAGES Scientific Steering Committee
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