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A Guide to Information on Greenhouse Gases and Ozone Depletion
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FROM VOLUME 7, NUMBER 1, JANUARY 1994

NEWS...

• RESEARCH NEWS

Item #d94jan117

Methane increase drops: Global measurements reveal a sharp drop in the rate of increase of atmospheric methane in 1992 that researchers tentatively attribute to decreased emissions in the former Soviet Union. (See Dlugokencky paper, Prof. Pubs./Gen. Int. Sci.) A brief article in New Scientist (p. 10, Oct. 9) discusses the work, which was presented at a meeting in Australia.

Item #d94jan118

Solar-climate relationships: Astronomers Sallie Baliunas and Robert Jastrow are publishing findings, based on surveys of dozens of stars, that could help explain a correlation reported in 1991 between the length of the solar cycle and the observed record of global temperature. See Science, pp. 1372-1373, Nov. 26.

Item #d94jan119

Canadian Climate Research Network: Letters of intent to participate in developing this network, intended for research on a variety of interdisciplinary Earth science topics, are being solicited. Contact Ross Brown, Clim. Res. Br., Atmos. Environ. Serv. (613-996-4488).

Item #d94jan120

"The Whole World Had a Case of Ice Age Shivers," R.A. Kerr, Science, pp. 1972-1973, Dec. 24. Several studies presented at the fall meeting of the American Geophysical Union suggest that the temperature fluctuations and iceberg surges that have characterized the last ice age were apparently felt all over the globe. Paleoclimatologists are considering changes in the deep ocean circulation as well as changes in the Earth's orbit as possible causes.

Item #d94jan121

"Bahamas Backs Theory of Sudden Climate Change," J. Hecht, New Scientist, p. 14, Dec. 18. Geologic evidence indicates that an abrupt 15-meter drop in sea level at the end of the last interglacial period might have occurred in less than a century.

Item #d94jan122

"Minor Climate Change Can Unravel a Forest," R. Monastersky, Science News, p. 359, Nov. 27. Modeling of the effect of the Little Ice Age on Canadian forests shows that a relatively minor, prolonged climate change can dramatically alter forests. See Campbell paper, Nature, p. 336, Nov. 25 (GCCD, Dec. 1993).