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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 11, NUMBER 3, MARCH 1998

PROFESSIONAL PUBLICATIONS...
OZONE DEPLETION: Ozone Chemistry and Physics


Item #d98mar60

"New TOMS Instrument Measures Ozone and Aerosols," J.A. Kaye (NASA-MTPE, Washington DC 20546), R.D. McPeters et al.,Eos, Trans. Amer. Geophys. Union, 79(5), 57, 63, Feb. 3, 1997.

New instruments launched in 1996 have provided new and better information about ozone distribution, SO2 concentrations following large volcanic eruptions, the distributions of UV-absorbing aerosols (including ash plumes) in the troposphere, and the flux of UV reaching the Earth's surface.


Item #d98mar61

"Increased Stratospheric Ozone Depletion Due to Mountain-Induced Atmospheric Waves," K.S. Carslaw (M. Planck Inst. Chem., POB 3060, D-55020 Mainz, Ger.; e-mail: carslaw@mpch-mainz), M. Wirth et al.,Nature, 391(6668), 675-678, Feb. 12, 1998.

Describes aircraft observations and model calculations to show that mountain-induced waves lower temperatures locally and enhance ozone destruction. This process occurs in several regions of the Arctic, and may explain the underprediction of ozone depletion by 3-D models of the Arctic stratosphere.


Item #d98mar62

"The Effect of Uncertainties in Kinetic and Photochemical Data on Model Predictions of Stratospheric Ozone Depletion," D.J. Fish (Dept. Meteor., Univ. of Reading, Whiteknights, POB 243, Reading RG6 6BB, UK), M.R. Burton,J. Geophys. Res., 102(D21), 25,537-25,542, Nov. 20, 1997.

This analysis shows that Arctic ozone destruction can be modeled with an uncertainty of 25% (1 sigma); two reactions out of over 100 account for more than a third of the uncertainty. Midlatitude uncertainty is 50%.


Item #d98mar63

"Observation of Stratospheric Ozone Depletion in Rocket Exhaust Plumes," M.N. Ross (Environ. Systems, The Aerospace Corp., POB 92957, Los Angeles CA 90009; e-mail: ross@courier3.aero.org), J.R. Benbrook et al.,Nature, 390(6655), 62 ff, Nov. 6, 1997.

Measurements in the wake of two Titan IV rockets show that ozone dropped near zero temporarily across regions 4-8 km wide. However, exhaust from solid-fuel rockets probably has no globally significant impact on stratospheric chemistry.


Item #d98mar64

"A Reexamination of the Impact of Anthropogenically Fixed Nitrogen on Atmospheric N2O and the Stratospheric O3 Layer," C. Nevison (NOAA/ERL, R/E/AL8, 325 Broadway, Boulder CO 80303; e-mail: cnevison@al.noaa.gov), E. Holland,J. Geophys. Res., 102(D21), 25,519-25,536, Nov. 20, 1997.

Calculations show that continued growth in the rate of anthropogenic nitrogen fixation, mainly related to crop production, would cause a small loss of ozone, which would be superimposed upon a larger recovery due to the phaseout of anthropogenic halocarbons.


Item #d98mar65

"Heterogeneous Chlorine Chemistry in the Tropopause Region," S. Solomon (Aeronomy Lab., NOAA, R/E/AL8, 325 S. Broadway, Boulder CO 80303; e-mail: solomon@al.noaa.gov), S. Borrmann et al.,J. Geophys. Res., 102(D17), 21,411-21,429, Sep. 20, 1997.

Uses satellite observations of cloud properties and frequencies to show that cirrus clouds can provide surfaces for ozone destruction, especially near the midlatitude tropopause of the Northern Hemisphere in summer.


Item #d98mar66

"Catalytic Destruction of Stratospheric Ozone," D.J. Lary (Dept. Chem., Univ. Cambridge, Lensfield Rd., Cambridge CB2 1EW, UK; e-mail: david@atm.cm.cam.ac.uk),J. Geophys. Res., 102(D17), 21,515-21,526, Sep. 20, 1997.

Reviews the main ozone destroying catalytic cycles operating in the stratosphere. Cycles involving HO2 and halogens (especially bromine) are particularly important.


Item #d98mar67

"A Twenty-Five Year Record of Stratospheric Hydrogen Chloride," L. Wallace (Natl. Optical Astronomy Observatories, POB 26732, Tucson AZ 85726; e-mail: lwallace@noao.edu), W. Livingston, D.N.B. Ball,Geophys. Res. Lett., 24(19), 2363-2366, Oct. 1, 1997.

Ground-based spectroscopic observations of the sun show a three-to-four fold increase in HCl from 1971 to 1997, although the rate of increase may have slowed around 1990.


Item #d98mar68

"Modeling the Composition of Liquid Stratospheric Aerosols," K.S. Carslaw (Max Planck Inst. Chemie, Mainz, Ger.), S.L. Clegg,Rev. Geophys., 35(2), 125-154, May 1997.

Reviews thermodynamic models of the liquid phase and implications for our understanding of stratospheric ozone destruction.


Item #d98mar69

"Trends in Daily Wintertime Temperatures in the Northern Stratosphere," S. Pawson (Inst. Meteor., Carl-Heinrich-Becker-Weg 6-10, 12165 Berlin, Ger.; pawson@strat01.met.fu-berlin.de), B. Naujokat,Geophys. Res. Lett., 24(5), 575-578, Mar. 1, 1997.

Examination of a 31-year record of daily temperatures shows that the area cold enough for the formation of polar stratospheric clouds increased noticeably over the period.

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