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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

NEWS...
RESEARCH NEWS

Item #d92feb71

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.

Item #d92feb72

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).

Item #d92feb73

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 development.

"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 being prepared.