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 4, NUMBER 8, AUGUST 1991
Arctic Ice Decrease. Satellite image analysis shows that the extent
of Arctic ice decreased slightly between 1978 and 1987; no change was observed
in the Antarctic. Although consistent with effects of greenhouse warming, the
results are considered far from conclusive. (See July 4, 1991, Nature
articles in Prof. Pubs./Trend Analysis, this Global Climate Change Digest
Ultraviolet monitoring is one of the new activities being planned in
the U.S. by the National Atmospheric Deposition Program. (See Reports/Earth
System Sciience, this Global Climate Change Digest issue--August 1991.)
"Antarctic Castaways Seek Icy Evidence of Global Warming," C.
Joyce, New Scientist, p. 13, July 27, 1991. Twenty scientists from the
U.S. and Soviet Union will drift on an ice flow for six months next year to
study the role of the Southern Ocean and its ice in climate.
"4 Ships to Battle Floes on Polar Expeditions," W. Sullivan, New
York Times, p. C9, July 16, 1991. Icebreakers from four nations will attempt
to reach the North Pole this summer, collecting evidence of global warming and
"Paleoclimate of Arctic Lakes and Estuaries: A New NSF Initiative,"
J. Andrews, Eos, p. 331, July 30, 1991. The program will seek to
understand examples of the response to climate controls similar in magnitude and
scope to those projected for the future.
"Fire and Ice Under the Deep-Sea Floor," T. Appenzeller, Science,
pp. 1790-1792, June 28, 1991. Vast undersea deposits of gas hydrates, including
methane hydrate, may play a major role in climate change and the future energy
"Supersonic Jets' Effect on Ozone Still Hazy," P. Zurer, Chem.
Eng. News, pp. 23-24, June 24, 1991. The role of heterogeneous reactions on
aerosols is among the uncertainties plaguing attempts to model this problem.
"Can Earth's Internal Heat Drive Ocean Circulation?" R. Kunzig,
Science, pp. 1620-1621, June 21, 1991. Discusses the possibly important
physical effects of plumes of heated water emerging from hydrothermal vents,
which could extensively mix chemicals and biology into the deep sea.
"Earth's Ice Hangs in the Balance," D. Charles, New
Scientist, p. 22, June 8, 1991. An MIT geophysicist has proposed a method
for determining whether the Antarctic ice sheet is growing thicker or thinner,
using very long baseline interferometry (VBLI).
"Chemistry of Greenland Ice Sheet Studied," Eos, pp.
250-251, June 4, 1991. The U.S. Greenland Ice Sheet Project Two (GISP2) began
taking ice cores in April, and is being coordinated with the European Greenland
Ice Core Project 30 km away.
"The Global Climate Observing System," Ambio, p. 165,
May 1991. Gives the executive summary of a World Climate Research Programme
report on the system, establishment of which was recommended by the Second World
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Index of Abbreviations