INTERCOMPARISON OF STRATOSPHERIC OZONE PROFILES OBTAINED BY STRATOSPHERIC AEROSOL AND GAS EXPERIMENT-II, HALOGEN OCCULTATION EXPERIMENT, AND OZONESONDES IN 1994-1995
Jj. Lu et al., INTERCOMPARISON OF STRATOSPHERIC OZONE PROFILES OBTAINED BY STRATOSPHERIC AEROSOL AND GAS EXPERIMENT-II, HALOGEN OCCULTATION EXPERIMENT, AND OZONESONDES IN 1994-1995, JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 102(D13), 1997, pp. 16137-16144
Stratospheric ozone mixing ratio profiles measured by satellite-borne
Stratospheric Aerosol and Gas Experiment (SAGE II data version 5.93) a
nd Halogen Occultation Experiment (HALOE data versions 17 and 18) are
compared with each other and with balloon-borne ozonesonde profiles at
Payerne, Lauder, and Macquarie Island stations during 1994-1995. The
SAGE II-HALOE ozone mixing ratio profiles are compared at 13-55 km alt
itudes, and the satellite-ozonesonde profiles are compared at 13-33 km
altitudes. It is found that HALOE data version 18 ozone values are sy
stematically larger than HALOE data version 17, particularly in the lo
wer stratosphere. HALOE data version 18 ozone profiles are about 2%, 5
-8%, and 10-20% larger than the corresponding HALOE data version 17 at
40-55, 25-40, and 15-25 km altitudes, respectively. The new version o
f HALOE ozone agrees better with SAGE II and Payerne ozonesonde profil
es than HALOE data version 17 does. In general, the agreements between
satellite-borne sensors and ozonesondes are all within their stated l
evel of uncertainties, Intercomparison results between SAGE II-Payerne
ozonesonde and SAGE II-Lauder ozonesonde are compared with earlier co
mparative studies between SAGE I-Payerne ozonesonde and SAGE II-Lauder
ozonesonde by Veiga et al. [1995], Better agreement is achieved at Pa
yerne station, but no improvement is discernible at Lauder ozonesonde
station. At altitudes above 20 km the intercomparisons between SAGE II
and HALOE data version 18 and between SAGE II and ozonesondes seem to
indicate that aerosol has no statistically significant impact on SAGE
II ozone retrieval during the period of 1994-1995.