Global Climate Change Digest: Main Page | Introduction | Archives | Calendar | Copy Policy | Abbreviations | Guide to Publishers


GCRIO Home ->arrow Library ->arrow Archives of the Global Climate Change Digest May 1997 ->arrow NEWS... ARCTIC OZONE Search

U.S. Global Change Research Information Office logo and link to home

Last Updated:
February 28, 2007

GCRIO Program Overview

 

 

Library 
Our extensive collection of documents.

 

Get Acrobat Reader

Privacy Policy

Global Climate Change DigestArchives of the
Global Climate Change Digest

A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 10, NUMBER 5, MAY 1997

NEWS...
ARCTIC OZONE


Item #d97may93

Arctic ozone levels during late March 1997 were the lowest ever measured there by the satellite-borne Total Ozone Mapping Spectrometer (TOMS), according to NASA scientists. The 1996-1997 polar stratospheric vortex was unusually strong and persistent, providing the cold temperatures necessary to form polar stratospheric cloud particles, a key factor in ozone destruction by anthropogenic chlorine. This year the vortex was centered on the pole; last winter it had shifted toward the North Atlantic, closer to populated areas.

Although this year's levels were twice as high as the lowest measured over Antarctica, some scientists are concerned about the low winter temperatures that have persisted late in the season for the past several years and have contributed to ozone loss. They are beginning to consider whether the winter temperatures could be driven by some mechanism related to ozone depletion or greenhouse gases. (See New Scientist, p. 13, Apr. 19, 1997, and feature article in Global Environ. Change Rep., pp. 1-3, Apr. 11.)

  • Guide to Publishers
  • Index of Abbreviations

  • Hosted by U.S. Global Change Research Information Office. Copyright by Center for Environmental Information, Inc. For more information contact U.S. Global Change Research Information Office, Suite 250, 1717 Pennsylvania Ave, NW, Washington, DC 20006. Tel: +1 202 223 6262. Fax: +1 202 223 3065. Email: Web: www.gcrio.org. Webmaster:
    U.S. Climate Change Technology Program Intranet Logo and link to Home