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 10, NUMBER 6, JUNE 1997
ENERGY & EMISSION ANALYSES & TRENDS: UNITED STATES
Methane Emissions from the Natural Gas Industry, 1997, (US EPA).
Prepared by the Gas Res. Inst. and the U.S. Environ. Protect. Agency.
Confirms the suspicion that gains in the reduction of CO2 emissions from
switching from coal or oil to natural gas are not significantly offset by
methane leakage and emission from natural gas industry operations. However,
natural gas leakage and emissions in the U.S. are higher than previously thought
by a factor of nearly two; 37% come from transmission and storage, 26% from
distribution, and 12% from processing. An increase in natural gas production
would be expected to use newer, lower-emitting technologies.
Annual Energy Outlook 1997, Dec. 1996 (EIA/DOE; US GPO). Also see
the EIA's Web site: WWW: http://www.eia.doe.gov.
Energy-related CO2 emissions could increase by 14.8% over 1990 levels, an
estimate that is somewhat higher than in the 1996 report because lower costs for
energy have resulted in higher projected energy use and lower penetration of
renewables. By 2015, energy-related CO2 emissions could increase by 34% over
1990 levels. These projections indicate that the U.S. may not be able to
stabilize greenhouse gas emissions at 1990 levels by 2000.
Emissions of Greenhouse Gases in the United States 1995, 1996
(EIA). For the full text see this Web site:
For 1995 compared to 1994, the U.S. emitted 0.8% more CO2, 1.8% more nitrous
oxide, and 11% more HFCs and PFCs. Emissions of CFCs declined, while those of
HCFCs were relatively constant. Data on methane emissions were not available at
the time of publication. Although CO2 emissions have continued to grow, they are
growing more slowly than the U.S. economy, population and overall energy
Voluntary Reporting of Greenhouse Gases 1995, July 1996 (EIA). To
obtain a CD ROM or other materials call 800 803 5182, or send e-mail to
More than 100 companies, accounting for about 23% of U.S. CO2 emissions,
reported about 645 projects to reduce greenhouse gas emissions. In this first
year of reporting, 12 of the 15 largest electric utilities were among the 96
filing reports on projects that included improved plant efficiencies,
cogeneration, and the use of non-fossil fuels including nuclear power. Other
projects included methane recovery, urban forestry, and tree planting.
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