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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



Item #d90apr28

"Stratospheric Hydroperoxyl Measurements," W.A. Traub (Harvard-Smithsonian Ctr. Astrophys., 60 Garden St., Cambridge MA 02138), D.G. Johnson, K.V. Chance, Science, 247(4941), 446-449, Jan. 26, 1990.

HO2 plays a key role in stratospheric chemistry through the HOx catalytic cycle of ozone destruction. Measurements of HO2 made with a balloon-borne far-infrared spectrometer show the measured daytime profile is in agreement with theory up to 40 km; above this level the measurements exceed theory by 30%, perhaps because of underprediction of ozone at these altitudes. The nighttime HO2 profile is strongly depressed with respect to the daytime profile, generally in agreement with theory.

Item #d90apr29

"A Study of Air Particle Motions During a Stratospheric Warming and Their Influence on Photochemistry," J. Austin (Dept. Atmos. Sci. AK-40, Univ. Wash., Seattle WA 98195), N. Butchart, Q.J.R. Meteorol. Soc., 115(488), 841-866, July 1989.

Calculates middle stratospheric ten-day trajectories during the minor warming of January 1979 using satellite data for air particles initially situated on the edge of the circumpolar vortex. Employment of a comprehensive photochemical model along the trajectories establishes that, for this warming, the distortion of the vortex from zonal symmetry led to substantial decreases in the destruction of ozone and in the production of nitric acid on the edge of the vortex.

Item #d90apr30

"Several Plausible Hypotheses for the Formation of the Antarctic Ozone Hole," C. Wang (Wahui Inst. Opt. Fire Mech., Acad. Sin., Hefei, PRC), D. Xie, J. Cai, Huanjing Kexue, 10(1), 89-92, 1989. In Chinese. Reviews possible causes of ozone depletion including: the odd-N theory, the upwelling hypothesis, the multiphase reaction hypothesis, and the roles of Br and Cl.

Item #d90apr31

"Action of Chlorofluorocarbons in the Formation of the Ozone Hole," J. Xu (Coll. Pharmacol., Beijing Med. Univ., Beijing, PRC), Huaxue Tongbao, 3, 6-10, 1989. In Chinese. Reviews the effects of CFCs, HOx, NOx, Cl and Br on stratospheric ozone.

Item #d90apr32

"A Multiwave Method of Atmospheric Ozone Measurements with Optimization of Parameters According to the Results of Observations," A.M. Lyudchik (NII Prikl. Fiz. Probl. im. Sevchenko, USSR), V.V. Zhuchkevich et al., Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana, 25(1), 45-52, 1989. In Russian. Describes a method for determining total ozone from measurement of solar UV. Discusses an approach for reducing systematic error based on the observations taken.

Item #d90apr33

"Retrieval of Atmospheric Gas Concentrations from Limb Sounding Data," G.S. Gurevich (Central Aerologic Observ., USSR), V.U. Khattatov, Izvestiya, Atmos. Ocean Phys., 24(6), 1988 (Eng. Ed., 436-440, Dec. 1988; publ. 1989).

Proposes a new approach to satellite tomography in which the unknown atmospheric gas concentration field is broken down into a system of approximate eigenfunctions of the corresponding integral equation. Shows how corrections for the local spherical symmetry approximation may be large for the most prominent real horizontal variations in the concentration of atmospheric gases, particularly in the vicinity of the Antarctic ozone hole.

Item #d90apr34

"Effect of the Accuracy of Photochemical Reaction Rates on Calculated Concentrations of Minor Gases in the Atmosphere," I.L. Karol' (Main Geophys. Observ., USSR), A.A. Kiselev, ibid., 483-486.

Using refined kinetic parameters, presents an updated table of the principal photochemical conversions among 30 components of the oxygen, nitrogen, hydrocarbon and chlorine cycles in the atmosphere from the surface up to 50 km.

Item #d90apr35

"Variations of Atmospheric Ozone in Spring-Summer According to Data from Soviet Arctic Stations," A.I. Voskresenskii, V.V. Nesterov et al., Soviet Meteor. Hydrol., No. 2, 93-96, 1989 (Eng. transl. of Meteorologiya i Gidrologiya, No. 2, 113-116). Preliminary data on the total ozone content in the Antarctic in 1987 confirm the increasing depth of the ozone hole, with the greatest decrease measured in the layers from 12 to 22 km.

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