Physics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18..420r&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 18, March 1991, p. 420-423. Aerospace Corp.-supported research.
Physics
10
Atmospheric Tides, Ozone Depletion, Solar Radiation, Stratosphere, Trace Contaminants, Atmospheric Chemistry, Chlorocarbons, Diurnal Variations, Fluorocarbons, Pressure Oscillations
Scientific paper
Depletion of stratospheric ozone by anthropogenic trace gases reduces the thermal forcing of the solar-driven atmospheric tides. Changes that have occurred in the diurnal and semidiurnal upward propagating tides since the onset of stratospheric ozone depletion are examined. Estimated reductions in tide amplitudes since circa 1960 vary among the different modes but are generally less than about 10 percent. The most accurate measure of tidal strength for the main symmetric semidiurnal mode, the tropical semidiurnal surface pressure oscillation, has decreased about 3 percent since the begining of ozone depletion, an amount that might be detected in the barometric record. Reductions in upper atmospheric tidal momentum fluxes are generally less than about 20 percent. The amplitudes of the solar forced tides will continue to decrease as ozone depletion continues.
Ross Martin N.
Walterscheid Richard L.
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