February 28, 2007
GCRIO Program Overview
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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 5, MAY 1991
U.K. Terrestrial Research: TIGER (Terrestrial Initiative in Global
Environmental Research) is a new, Ј7 million program sponsored by the
National Environmental Research Council. Key areas to be addressed through field
study, laboratory experiments and computer modeling are the carbon cycle, trace
greenhouse gases, and the water and energy budgets. TIGER will involve
university and polytechnic research groups as well as NERC and other research
institutes. Initial research proposals were due May 10, and research activity
will begin this summer within the U.K. and at sites such as the Amazon
rainforest and the Sahel. For information contact Program Mgr. Max Beran, Inst.
Hydrology, Maclean Bldg., Crowmarsh Gifford, Wallingford, Oxfordshire OX10 8BB
A national Global Change Center Directory is being prepared by the
Center for Environmental Information (CEI) for Oak Ridge National Laboratory.
Centers to be included will generally represent formal institutional
coordination in support of multidisciplinary research, aimed at a broad
understanding of global change as a basis for policy recommendation. Candidates
for inclusion may contact Carole Beal at CEI, 46 Prince St., Rochester NY 14607
Model evaluation: A Model Evaluation Consortium for Climate
Assessment (MECCA) was recently formed to quantify in detail the reliability of
projections of changes induced by greenhouse gases. Integrated analysis teams
and modelers, using supercomputer facilities at the National Center for
Atmospheric Research, will attempt to develop preliminary results for the June
1992 U.N. Conference on Environment and Development. The deadline for proposals
for Phase 1 (May-July, 1991) has passed. For information contact MECCA manager
Charles Hakkarinen, Elec. Power Res. Inst., POB 10412, Palo Alto CA 94303
"Buying Time in the War on Global Warming," R. Monastersky, Sci.
News, p. 183, Mar. 23, 1991. Potentially controversial results from a simple
climate model (see Schlesinger article, Nature, p. 219, Mar. 21 in Prof.
Pubs./Gen. Interest & Policy, this Global Climate Change Digest issue--May
1991) suggest that the penalty for delaying reductions of greenhouse gas
emissions is small.
"Methane's Sinks and Sources," P.J. Crutzen, Nature, p.
380, Apr. 4, 1991. The destruction rate of methane, a greenhouse gas also
involved in ozone destruction, may have been overestimated by up to 25%. (See
Vaghjiani article, ibid., p. 406, listed in Prof. Pubs./Gen. Interest &
Policy, this Global Climate Change Digest issue--May 1991.) In this
article Crutzen discusses the results and recommends a 15-20% reduction in
anthropogenic sources of methane, especially landfills and fossil fuels.
"A Radical Mechanism for Methane Buildup," W. Gibbons, Sci.
News, p. 116, Feb. 23, 1991. Los Alamos National Laboratory scientists have
concluded that rising levels of methane in the atmosphere may result from a
depletion of hydroxyl radical at twice the rate previously thought. This article
presents critical views on the results, announced so far only by press release,
from other atmospheric chemists.
"Gas Dispersion Method May Give Clue to Effects of CO2 on Biomass,"
J. Haggin, Chem. Eng. News, pp. 29-31, Apr. 1, 1991. Brookhaven National
Laboratory's Free Air Controlled Experiment (FACE) program has been developing a
system for exposing vegetation to controlled amounts of atmospheric gases in the
field, under otherwise natural growing conditions. This article describes the
system and the importance of understanding interactions between the atmospheric
and terrestrial carbon pools. Tests on cotton plants show that CO2 enrichment
produced 50% more biomass and crop maturity five weeks earlier than normal,
although damage from insects was greater--results that could not have been
determined from previous enclosed-chamber experiments.
"New Study of Forest Response to CO2 Underway," Environ.
Update (Elec. Power Res. Inst.), p. 3, Apr. 1991. In 1990 EPRI began a
program using open-top chambers to determine the long-term responses of plants
and trees to elevated CO2. Five-year experiments at Desert Research Institute
and Duke University are focusing on ponderosa pine and loblolly pine, both
commercially important timber species.
Guide to Publishers
Index of Abbreviations