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 5, NUMBER 2, FEBRUARY 1992
Hydroxyl levels overestimated: Field measurements by NOAA scientists
show that global levels of the hydroxyl radical have been overestimated by
5-10%. (See Butler et al. in Prof. Pubs.--Gen. Interest, this GLOBAL CLIMATE
CHANGE DIGEST issue--Feb. 1992.) This means that the atmospheric lifetime of
planned CFC substitutes, which still cause some ozone depletion, may be longer
than expected since hydroxyl plays a major role in their removal.
The DMS-cloud-climate hypothesis, by which sulfur compound
(DMS) emissions from ocean plankton influence cloud characteristics and hence
climate, is supported by measurements reported by Ayers and Gras in Nature
(see Prof. Pubs.--Clouds and the Sulfur Cycle, this GLOBAL CLIMATE CHANGE
DIGEST issue--Feb. 1992; New Scientist, p. 24, Nov. 9, 1991).
IGBP News. "Challenging Research Opportunity for Ecologists," Ambio,
p. 403, Dec. 1991. Summary of the developing Global Change and Terrestrial
Ecosystems (GCTE) portion of the International Geosphere-Biosphere Program. It
will focus on: ecosystem physiology (e.g., exposure to elevated CO2 in
controlled environment chambers); ecosystem structure (building predictive
models); and impacts on agriculture and forestry.
"Data and Information System," IGBP Newsletter, pp. 2-4,
Dec. 1991. (From IGBP Secretariat, Royal Swed. Acad. Sci., Box 50005, S-104 05
Stockholm, Swed.) A detailed summary of a workshop (Toulouse, France, June 1991)
on creating long-term, global data sets necessary for IGBP projects and model
"The Inter-American Institute for Global Change Research," ibid.,
pp. 4-5. President Bush proposed such an institute in April 1990, to conduct and
facilitate scientific, social and economics research on global change issues
that are both unique to the region and important to the world. A planning
workshop was held in San Juan, Puerto Rico, July 1991.
"Land Ocean Interactions in the Coastal Zone (LOICZ)," ibid.,
pp. 5-6. Results of a planning meeting on a proposed IGBP core project on this
topic, held in Toulouse, France (Oct. 1991), in conjunction with a NATO Advanced
Workshop on the Impacts of Global Change on Coastal Oceans. A science plan is
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Index of Abbreviations