February 28, 2007
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A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 7, NUMBER 3, MARCH 1994
decline and UV-B: Oregon researchers have published evidence
that exposure to rising levels of ultraviolet light from ozone
depletion is a factor in the worldwide decline being observed in
some amphibian populations. (See "UV Repair and Resistance
to Solar UV-B in Amphibian Eggs: A Link to Population
Declines?" A.R. Blaustein, P.L. Hoffman et al., Proc.
Natl. Acad. Sci., 91(5), 1791-1795, Mar. 1994. See
also articles in Chem. Eng. News, p. 5, Mar. 7; New
Scientist, p. 7, Mar. 5; The New York Times, p. C4,
bromide from fires: The recent finding that biomass burning
may contribute significantly to methyl bromide emissions raises
questions about the control of this chemical under the Montreal
Protocol. (See two items in Science, 263(5151),
Mar. 4, 1994: "Fires, Atmospheric Chemistry and the Ozone
Layer," R.J. Cicerone, 1243-1244; and "Emission of
Methyl Bromide from Biomass Burning," S. Manö, M.O.
Andreae, 1255-1257. See also Chem. Eng. News, pp. 5-6,
trend: In summarizing the finding of Dlugokencky et al., that
the rise in atmospheric methane abruptly leveled off in 1991 (GCCD,
Jan. 1994), an article in Science (p. 751, Feb. 11) points
out that the rise in carbon dioxide also slowed, and oxygen took
an unusual jump. With further monitoring, the relative
fluctuations of these gases could prove instructive. Speculation
that the methane rate change results from the repair of leaks in
Russian gas lines is discounted in this article and in an
extensive analysis in Energy, Econ. & Clim. Change
(pp. 12-15, Jan.).
Still Reeling from Pinatubo Blast," R. Monastersky, Science
News, p. 70, Jan. 29. The eruption caused stratospheric
temperatures to plummet to record lows by the end of 1993.
CO2 Model Shows Whole Earth 'Breathing,'" B. Hileman, Chem.
Eng. News, p. 6, Jan. 10. Workers at the NASA Ames Research
Center have developed the first geographically precise, global
image of the removal of CO2 from the atmosphere by photosynthesis
and the release of CO2 into it from soils. (See "Terrestrial
Ecosystem Production: A Process Model Based on Global Satellite
and Surface Data," C.S. Potter, J.T. Randerson et al., Global
Biogeochem. Cycles, 7(4), Dec. 1993: 811-841).
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