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 9, SEPTEMBER 1992
Mt. Pinatubo's impact on ozone has been documented by researchers
who found that stratospheric ozone levels decreased by up to 20 percent at the
altitude (24 km) where the greatest concentrations of volcanic particles reside.
See Grant et al., Geophys. Res. Lett., p. 1109, June 2, 1992, in Prof.
Pubs./Strat. Ozone, this GLOBAL CLIMATE CHANGE DIGEST issue--Sep. 1992,
and New Scientist, p. 16, Aug. 1.
Methane accumulation slows: new results based on widespread global
measurements indicate that the rise in atmospheric methane concentration may be
reaching a peak. See Steele et al., Nature, July 23, in Prof. Pub./Gen.
Int.--Science, this GLOBAL CLIMATE CHANGE DIGEST issue--Sep. 1992; also
Sci. News, p. 55, July 25.
Mysterious plumes solved: Plume-like cloud streaks emanating from
Bennett Island in the East Siberian Sea were initially observed by satellite in
1983, and thought by some to indicate deposits of frozen methane leaking from
the ocean floor. The recent demise of the Cold War enabled researchers to sample
the plume by aircraft and determine that it contains normal levels of methane.
The streaks are apparently water clouds created by air flow over the island's
mountains. See Sci. News, p. 422, June 27, 1992; Science, p. 35,
ARM Program information: The U.S. Department of Energy (DOE) has
begun publication of ARM Outreach, a bulletin to inform a broad
readership of researchers, policy makers, managers and educators about its
Atmospheric Radiation Measurement Program, DOE's largest contribution to the
U.S. Global Change Research Program. The 20-page Spring 1992 issue describes the
program's setting within DOE; its purpose, goals and organization; its
investigators and their research in a general fashion, and two specific research
projects. Available (no charge) from Carbon Dioxide Info. Analysis Ctr., Oak
Ridge Nat. Lab., MS-6355, POB 2008, Oak Ridge TN 37831 (615-574-0390).
Also available is ARM Bulletin, a monthly update of ARM activities
with calendar listings and other brief notes of interest to the research and
policy community. Contact Ted Cress, Pacific NW Lab., K1-74, POB 999, Richland
WA 99352 (509-375-6964).
Methane data sought: The Carbon Dioxide Information Analysis Center
(CDIAC) of the U.S. DOE is constantly on the lookout for new databases bearing
on global climate change. A dozen specific types of methane data desired are
listed in CDIAC Communications (p. 24, Winter 1992). Contact CDIAC at
the address given in the previous item.
"Mt. Pinatubo's Cloud Shades Global Climate," Sci. News,
p. 37, July 18, 1992. Provides further details on climate model results and
measurements of decreased solar radiation indicating that the Pinatubo eruption
has had the expected effect on climate. (See Research News, GLOBAL
CLIMATE CHANGE DIGEST, Aug. 1992.)
"Flourishing Forests Mop up Missing Carbon," F. Pearce, New
Scientist, p. 10, July 11, 1992. Roger Sedjo at Resources for the Future
finds that, contrary to the conventional view of broad global deforestation,
Northern Hemisphere forests have expanded so much in the past four decades that
they are counteracting the greenhouse effect. (See his article in the June 1992
Ambio, listed in GLOBAL CLIMATE CHANGE DIGEST, Prof.
Pubs./Global Carbon Cycle, Aug. 1992)
"International Meeting Airs Ozone Studies," Eos, pp. 273,
275-276, June 30, 1992. The Quadrennial Ozone Symposium (June 4-13,
Charlottesville, Virginia) gave as much attention to increasing levels of
tropospheric ozone as it did to stratospheric ozone, its traditional topic. It
included a progress report on the effects of Mt. Pinatubo on stratospheric
"Summary Report of the IUGG-IAMAP Workshop MW5: Climatic Effects of
Atmospheric Trace Constituents," (Aug. 19-20, 1991, Vienna), W.-C. Wang et
al., Bull. Amer. Meteor. Soc., pp. 801-804, June 1992.
"NADW Formation as a Branch of the Hydrological Cycle," T.F.
Stocker, W.S. Broecker, Eos, May 5, 1992. Summary of a conference on
North Atlantic deep water formation (NADW) held Nov. 1991 at Lamont-Doherty
Geological Observatory, Palisades, New York.
Guide to Publishers
Index of Abbreviations