Premium
A comparison of ozone trends from SME and SBUV satellite observations and model calculations
Author(s) -
Rusch D. W.,
Clancy R. T.
Publication year - 1988
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl015i008p00776
Subject(s) - ozone , stratopause , atmospheric sciences , latitude , environmental science , southern hemisphere , flux (metallurgy) , northern hemisphere , backscatter (email) , satellite , mixing ratio , total ozone mapping spectrometer , ultraviolet , mesosphere , climatology , ozone layer , meteorology , stratosphere , physics , geology , chemistry , telecommunications , organic chemistry , astronomy , computer science , wireless , quantum mechanics
Trends in the ozone mixing ratio near the stratopause are presented for global observations by the Ultraviolet Spectrometer (UVS) instrument on the Solar Mesosphere Explorer (SME) and the Solar Backscatter Ultraviolet Instrument (SBUV) on NIMBUS‐7. The June, September, and January data are separately analyzed for trends as a function of latitude over the 1982‐1986 period. The SME UVS data indicate trends in the range −0.5±1.3%/yr in ozone for the summer hemisphere at 1.0 mbar for January, June, and for all latitudes in September. The SBUV data show decreases of 2‐5%/yr for all three months. Model calculations of ozone trends at 1.0 mb, including 5%/yr Cl X increases, measured solar flux decreases over the 1982‐1986 time period, and measured temperatures, reproduce the SME trends. The solar flux and Cl X trends contribute equally to the measured changes at 1.0 mb. The SBUV and UVS data exhibit remarkably similar seasonal and latitudinal variations in ozone trends over the five years. The detailed variations of ozone trends from both data sets are reproduced by photochemical model calculations which include latitude‐dependent NMC temperature trends over the 1982‐1986 period.