February 28, 2007
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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 4, APRIL 1995
OF GENERAL INTEREST: GLOBAL WARMING SCIENCE
Roles of Carbon Dioxide and Water Vapour in Warming and Cooling
the Earth's Troposphere," J. Barrett (Dept. Chem., Imperial
Coll., S. Kensington, London SW7 2AY, UK), Spectrochim. Acta, 51A(3),
415-417, Mar. 1995.
The widely held notion that rising levels of CO2
will lead to atmospheric warming, and current global model
simulations of that effect, depend on certain assumptions. The
atmosphere is assumed to behave as a continuous emitter of broad
spectrum cavity-type radiation as it re-emits the initially
absorbed terrestrial radiation, and vibrational fluorescence of
CO2 is assumed to occur substantially at all
altitudes. This article presents evidence countering these
assumptions. (See RES. NEWS.)
"Evaluation of the Potential Impact of Methane Clathrate
Destabilization on Future Global Warming," L.D.D. Harvey
(Dept. Geog., Univ. Toronto, Toronto ON M5S 1A1, Can.), Z. Huang, J.
Geophys. Res., 100(D2), 2905-2926, Feb. 20, 1995.
Methane clathrates, icelike compounds found in permafrost
regions and in ocean sediments, are a potential source of
positive warming feedback if rising temperatures release the
trapped methane. Model simulations using a variety of
anthropogenic emission scenarios and parameter assumptions show
that the potential impact on global warming is smaller than the
warming difference between low and medium, or medium and high,
anthropogenic CO2 emission scenarios.
"Planned EOS Observation of the Land, Ocean and
Atmosphere," J. Dozier (Ctr. Remote Sensing, Univ.
California, Santa Barbara CA 93106), Atmos. Res., 31(4),
329-357, Apr. 1994.
Describes in detail the Earth Observing System, the major NASA
contribution to the U.S. Global Change Research Program. Based on
a series of satellites with sensors designed to measure the
crucial variables to study processes and monitor changes in the
land, ocean, and atmosphere, it is to be launched beginning in
1998. The information collected, to be handled using the existing
EOS Data and Information System, will address the highest
priority science and policy questions identified by the Committee
on Earth and Environmental Sciences and the IPCC.
"Long-Term Study of the Natural Environment-Perceptive
Science or Mindless Monitoring?" (See GENERAL & POLICY
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Index of Abbreviations