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Global Climate Change Digest

A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999



Item #d96sep74

Precipitation variability trend: A new analysis of precipitation records finds that although mean global precipitation has not changed over the past century, decadal variability has increased, consistent with model simulations of greenhouse warming. (See Tsonis paper, Prof. Pubs./Of Gen. Interest, this Digest issue--Sep. 1996.)

Item #d96sep75

UV trend updated: A refined estimate of the upward trend in ultraviolet radiation reaching the Earth's surface has been developed from satellite data. (See New Scientist, p. 13, Aug. 10, 1996; The New York Times, p. 30, Aug. 4; and Herman paper, Prof. Pubs./Of Gen. Interest, this Digest issue--Sep. 1996.)

Item #d96sep76

Hawaiian ozone dips: Stratospheric ozone fell to a record low over Hawaii in 1994-95, mainly as a result of shifts in stratospheric winds. The steady decline in worldwide ozone levels could make new record lows likely. (See New Scientist, p. 13, July 20, 1996, and Hofmann paper in Prof. Pubs./Ozone Depletion/Distribution and Trends, this Digest issue--Sep. 1996.)

Item #d96sep77

Volcanic aerosols and ozone: A new modeling study shows that volcanic aerosols have a surprisingly strong influence on anthropogenic ozone depletion, and suggests that emissions of aerosols from aircraft could be more important for ozone depletion than nitrogen oxide emissions. (See Chem. Eng. News, p. 7, Apr. 8, 1996, and Solomon paper, Prof. Pubs./Ozone Depletion/CHem. & Dynamics, this Digest issue--Sep. 1996.)

Item #d96sep78

NIGEC grants: The National Institute for Global Environmental Change has issued its 1997-98 request for proposals, available on the World Wide Web at or from Karen Woodward, NIGEC, 294 Pierce Hall, Harvard Univ., Cambridge MA 02138 (tel: 617 496 2347; fax: 617 496 7247; e-mail: nigec@io.harvard. edu).

Item #d96sep79

Mad cows and climate change: A British researcher has analyzed implications for the carbon cycle if the U.K. moves all cattle to new pasture to eradicate "mad cow disease." (See Smith paper, Prof. Pubs./Carbon Cycle, this Digest issue--Sep. 1996.)

Item #d96sep80

"New Satellite Puts Japan in Top Tier of Remote Sensing," D. Normile, Science, p. 1038, Aug. 23, 1996. In August, Japan's National Space Development Agency (NASDA) launched a $1 billion Advanced Earth Observing Satellite (ADEOS). The event marks the beginning of an ambitious program that should take NASDA beyond its historical role as a rocket and satellite developer to become a major player in research.

Item #d96sep81

"Calibrating Ozone Damage," Science, pp. 37, 39, July 5, 1996. The Antarctic ozone hole can cause a 10-fold jump in UV-B exposure at the surface, but whether the increased radiation harms organisms such as ocean plankton is a current debate. Now two Berkeley researchers have come up with a simple test for damage to phytoplankton. (See Lao paper, Prof. Pubs./Ozone Depletion/UV Radiation, this Digest issue--Sep. 1996.)

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