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 5, NUMBER 12, DECEMBER 1992
STRATOSPHERIC OZONE: TRENDS
"Evidence for Vertical Ozone Redistribution since 1967," R.
Furrer (Inst. Weltraumwissenschaften, Freie Univ. Berlin, Fabeckstr. 69, D-1000
Berlin 33, Ger.), W. Döhler et al., J. Atmos. Terr. Phys., 54(11-12),
1423-1445, Nov.-Dec. 1992.
Dobson and balloon-borne measurements made near Berlin have been processed
into the longest European data set of total column density, altitude-dependent
partial pressures and corresponding temperatures. Ozone concentrations over the
past 24 years increased in the middle stratosphere and in the troposphere, but
decreased in the lower stratosphere (consistent with destruction by
"Trends in Column Ozone Based on TOMS Data: Dependence on Month,
Latitude, and Longitude," X. Niu (Dept. Statistics, Florida State Univ.,
Tallahassee FL 32306), J.E. Frederick et al., J. Geophys. Res., 97(D13),
14,661-14,669, Sep. 20, 1992.
Statistical analysis of data from 70° S to 70° N for 1978-1990
shows that trends are highly seasonal and location dependent. For high latitudes
most of the monthly trends are negative; equatorial trends are near zero. The
largest negative trends found (29% per decade) appeared in October around
70° S and 20° W-100° W.
"On the Stability of the Ozone Layer at Tromso," K. Henriksen
(Auroral Observatory, Univ. Tromso, 9000 Tromso, Norway), T. Svenoe, S.H.H.
Larsen, J. Atmos. Terr. Phys., 54(9), 1113-1117, Sep. 1992.
Measurements since 1935 show no decreasing trend of ozone content and no
correlation with the increasing chlorine and halogen compound content of the
atmosphere in the Scandinavian sector of the Arctic.
"Long-Term Winter Total Ozone Changes at Macquarie Island," P.
Lehmann (Bur. Meteor., GPO Box 1289K, Melbourne, 3001 Australia), D.J. Karoly et
al., Geophys. Res. Lett., 19(14), 1459-1462, July 24, 1992.
Measurements at 55° S between the 1970s and 1987-90 show reductions of
about 12% during July and September.
Three items from J. Atmos. Terr. Phys., 54(5), May 1992:
"A New Umkehr Inversion Algorithm," C.L. Mateer (255 Bamburgh
Circ., #1210, Scarborough ON M1W 3T6, Can.), J.J. Deluisi, 537-556. Compares a
new and the old (1964) algorithms for vertical ozone profiles, and discusses
implications for trend analysis.
"Results of the New and Old Umkehr Algorithm Compared with Ozone
Soundings," H.U. Dutsch (Fed. Inst. Technol., CH-8092 Zurich, Switz.), J.
Staehelin, 557-569. Vertical ozone profiles retrieved using the new algorithm of
Mateer and DeLuisi (1992) were compared with those in use at the World Ozone
Data Center in Toronto. Implications for trend detection are discussed.
"Long-Term Tropospheric and Lower Stratospheric Ozone Variations from
Ozonesonde Observations," J. London (Dept. Astrophys., Univ. Colorado,
Boulder CO 80309), S.C. Liu, 599-625. Discusses long-term mean pressure-latitude
seasonal distributions for the four seasons spanning up to 20 years, including a
negative trend of 0.6% per year in the lower stratosphere.
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