Retrieval of Vertical Ozone Profile Using Satellite Solar Occultation Method and Tests of its Sensitivity

Details Retrieval of Vertical Ozone Profile Using Satellite Solar Occultation Method and Tests of its Sensitivity Retrieval of Vertical Ozone Profile Using Satellite Solar Occultation Method and Tests of its Sensitivity

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jass...15..119c&link_type=abstract

Journal of Astronomy and Space Sciences, vol. 15, no. 1, p. 119-138.

Astronomy and Astrophysics

Astronomy

Scientific paper

Recently measurements of atmospheric trace gases from satellite are vigorous. So the development of its data processing algorithm is important. In this study, retrieval of vertical ozone profile from the atmospheric transmittance measured by satellite solar occultation method and its sensitivity to temperature and pressure are investigated. The measured transmittance from satellite is assumed to be given by the limb path transmittance simulated using annual averaged Umkehr data for Seoul. The limb path transmittance between wavelengths 9.89micro m and 10.02micro m is simulated with respect to tangent heights using the ozone data of HALOE SIDS(Hallogen Occultation Experiment Simulated Instrument Data Set) as an initial profile. Other input data such as pressure and temperature are also from HALOE SIDS. Vertical ozone profile is correctly retrieved from the measured transmittance by onion-peeling method from 50km to 11km tangent heights with the vertical resolution of 3km. The bias error of +/- 0.001 in measured transmittance, the forced error of +/- 3K in each layer temperature, and the forced +/- 3% error in each layer pressure are assumed for sensitivity tests. These errors are based on the ADEOS/ILAS error limitation. The error in ozone amount ranges from -6.5% to +6.9% due to transmittance error, from -9.5% to +10.5% due to temperature error, and from -5.1% to +5.4% due to pressure error, respectively. The present study suggests that accurate vertical ozone profile can be retrieved from satellite solar occultation method. Accuracy of vertical temperature profile is especially important in the retrieval of vertical ozone profile.

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