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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 7, NUMBER 5, MAY 1994

PROFESSIONAL PUBLICATIONS... OF GENERAL INTEREST: GLOBAL WARMING SCIENCE

Item #d94may4

Two related items in Nature, 368(6473), Apr. 21, 1994:

"Diversity Begets Productivity," P. Kareiva (Dept. Zool., Univ. Washington, Seattle WA 98195), 686-687. Discusses how the Ecotron facility at Imperial College, which makespossible experiments with closed ecosystems, has started producing results unattainable otherwise, such as those reported in the following paper.

"Declining Biodiversity Can Alter the Performance of Ecosystems," S. Naeem (NERC Ctr. Population Biol., Imperial Coll. at Silwood Park, Ascot, Berkshire SL5 7PY, UK), 734-737. Direct experimental manipulation of diversity by over an order of magnitude provides evidence that reduced biodiversity [a possible result of climate change] may alter the performance [and carbon cycling] of ecosystems.

Item #d94may5

"Stellar Luminosity Variations and Global Warming," P. Foukal (Cambridge Res. & Instrumentation Inc., Cambridge MA 02139), Science, 264(5156), 238-239, Apr. 8, 1994.

Recent studies indicate that the variation in the sun's luminosity is less than observed in many other stars of similar magnetic activity, and that the sun could become dimmer if its magnetic activity exceeds present levels. However, the analysis of carbon-14 and beryllium-10 records over the past several millenia presented here shows that such a change in luminosity is unlikely in the present epoch.

Item #d94may6

"Quantifying Global Warming from the Retreat of Glaciers," J. Oerlemans (Inst. Atmos. Res., Utrecht Univ., Princetonplein 5, 3584 CC Utrecht, Neth.), Science, 264(5156), 243-245, Apr. 8, 1994.

Analysis of data compiled by the World Glacier Monitoring Service indicates that the retreat of glaciers during the last 100 years appears to be coherent over the globe. Calculations of the climate sensitivity of glaciers suggest that the observed retreat can be explained by a linear warming trend of 0.66 Kelvin per century.