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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 8, NUMBER 6, JUNE 1995
NEWS...
RESEARCH NEWS
Item #d95jun121
 U.S. climate trends: An
extensive analysis of U.S. weather records by Thomas Karl et al., published in
the first issue of Consequences, finds trends in weather extremes that
are consistent with those expected from greenhouse warming. (See NEWS/NEW
PUBLICATIONS, and PROF. PUBS./GEN. INTEREST/GENERAL AND POLICY, both in this
Digest issue--June 1995.) They stress however that the analysis only relates to
a limited area of the world, and results, while highly suggestive, do not
constitute proof of greenhouse warming. (See Science, pp. 363-364, Apr.
21; The New York Times, p. C4, May 23.)
Aerosol cooling: A different study by Karl et al. has revealed
evidence of aerosol cooling in global temperature records, which is strongest in
areas where aerosol pollution is heaviest. (See Science, p. 802, May
12.)
Item #d95jun122
"Drying Out the
Tropics," D. Rind, New Scientist, pp. 36-40, May 6. A climatologist
gives a detailed summary of recent evidence suggesting that, contrary to
conventional wisdom, global warming could substantially affect the tropical
climate. It is vital to track tropical temperatures and watch how they change.
Item #d95jun123
"Will Plants
Profit from High CO2?" E. Culotta, Science, 654-656,
May 5. Summarizes recent experiments, which indicate that elevated CO2
may help crops grow better, but the overall effect on plants in natural
ecosystems remains unknown. Elevated CO2 will alter the growth of
green plants whether or not it warms the globe.
Item #d95jun124
"NASA, Academy to
Re-examine EOS," A. Lawler, Science, p. 360, Apr. 21. As part of
the current political trend to cut government spending by Republicans,
Representative Robert Walker, chair of the House Science Committee, has called
for review of NASA's massive Earth Observation System, which currently plans to
launch a fleet of satellites in 1998. Walker would like to see a trimmed
program, although he does acknowledge the scientific value of the project.
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