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Global Climate Change DigestArchives of the
Global Climate Change Digest

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

FROM VOLUME 10, NUMBER 4, APRIL 1997

NEWS...
RESEARCH NEWS


Item #d97apr52

Vapor trails and warming: Scientists at NASA's annual meeting on aircraft emissions agreed that vapor trails could be an overlooked source of atmospheric warming from aircraft, in addition to their CO2 and nitrogen oxide emissions. If commercial aircraft are making a significant contribution to global warming, the problem will escalate rapidly because air traffic is expected to double in the next 15 years. (See New Scientist, p. 5, Mar. 29, 1997.)


Item #d97apr53

Nitrogen impacts: A team of ecologists has concluded that human activities have dramatically increased the flow of nitrogen into the biological world, with serious and long-term consequences, including effects on the carbon cycle and emissions of greenhouse gases. Their synthesis of previous studies was presented at the latest meeting of the American Association for the Advancement of Science, and will be published in the August issue of Ecological Applications. (See Science News, p. 100, Feb. 1, 1997. An unrelated article on the same topic appears in PROF. PUBS./OF GEN. INTEREST, this Global Climate Change Digest issue--Apr. 1997.)


Item #d97apr54

Global water cycle: Highlights of the recent Global Energy and Water Experiment (GEWEX) Science Conference, including recommendations for future research, are discussed in Eos, pp. 134, 139, Apr. 1, 1997. (The proceedings are available on the World Wide Web at http://www.cais.com/gewex/gewex.html.)


Item #d97apr55

"Southern Oceans Hold Key to Climate," F. Pearce, New Scientist, p. 21, Apr. 5, 1997. Research to be published in the journal Paleoceanography gives evidence of rapid climate changes in the Southern Hemisphere oceans that appear to be related to similar changes in the Northern Hemisphere. If the global oceans play as great a role in climate change as the results suggest, predictions about the impact of greenhouse gas emissions may have to be revised.


Item #d97apr56

"Chop Down a Tree To Save the Forest," B. Holmes, New Scientist, p. 10, Feb. 22, 1997. Sustainable forestry can do more harm than good, tropical forestry experts explained at the American Association for the Advancement of Science meeting.

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