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 2, NUMBER 5, MAY 1989
Ambio (XVIII(1), 1989) contains a series of articles that
compares the Arctic and Antarctic and points out their importance in a global
context. In addition to the following three articles, others cover the politics
of science, environmental impact assessment and future challenges of the
Antarctic. This issue also includes the regular news page for IGBP
(International Geosphere-Biosphere Program), which discusses the properties of
polar regions that are key global processes: biogenic trace gas emissions, solar
reflectivity, thermal regulation and ice formation. Also discusses these
indicators of global change: ozone concentrations, ice cores, polar ice levels
and polar regional temperatures.
"Antarctic Submicron Aerosols and Long-Range Transport of
Pollutants," T. Ito (Observ. Dept., Japan Meteor. Agency, 1-3-4,
Ohte-machi, Chiyoda, Tokyo 100, Japan), 34-41.
Summarizes findings on the behavior of the two types of submicron aerosols
observed in the Antarctic troposphere. During the cold months, maritime air
brings sea-salt particles and ammonium sulfate particles that dominate the
aerosol. During the warm months, sulfuric acid aerosols formed by photochemical
oxidation of sulfur-bearing gases in the sunlit troposphere over Antarctica
dominate. Most Antarctic submicron particles are of tropospheric, not
stratospheric or anthropogenic origin.
"Atmospheric and Climatic Change in the Arctic and Antarctic,"
J.B. Maxwell (Atmos. Environ. Svc., 4905 Dufferin St., Downsview, Ont. M3H 5T4,
Can.), L.A. Barrie, 42-49.
Discusses the global and regional impacts on the polar regions from the
greenhouse effect, solar variations and stratospheric aerosols. Includes
physical and biological changes and changes in socioeconomic activities.
Expects significant changes in sea-ice extent and thickness, in land-ice
mass and in the permafrost regime. Gradual adjustment of vegetation and wildlife
patterns will take place. Suggests that present policies and methodologies will
need to be reassessed as a result.
"Arctic Haze: Air Pollution in Polar Regions," J.
Heintzenberg (Dept. Meteor., Univ. Stockholm, Arrhenius Lab., S-106 91,
Stockholm, Sweden), 50-55.
Reviews the problem of Arctic haze. Presents horizontal, vertical and
seasonal distributions of particulate matter as well as a comparison of physical
and chemical properties of the haze particles to those of continental aerosols.
Reviews evidence that relates Arctic haze to mid-latitude anthropogenic sources
and discusses unresolved issues of possible trends in Arctic air pollution.
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