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New method for inferring total ozone and aerosol optical thickness from multispectral extinction measurements using eigenvalue analysis
Author(s) -
Taha Ghassan,
Box Gail P.
Publication year - 1999
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 - 10.1029/1999gl010823
Subject(s) - ozone , total ozone mapping spectrometer , aerosol , environmental science , spectroradiometer , remote sensing , satellite , wavelength , multispectral image , atmospheric sciences , meteorology , optics , physics , ozone layer , reflectivity , geology , astronomy
Eigenvalue analysis provides a way of predicting the measurement value at a particular wavelength from measurements made at other wavelengths. It was applied to MFRSR data to find the aerosol contribution made to the measured total optical thickness at the Chappuis band centered near 0.614 µm, within the measurement accuracy. This was used to calculate the total ozone column. The estimated total ozone columns using this technique are compared with the ozone determined using the method described by (King and Byrne, 1976), both were compared with ADEOS and EP total ozone mapping spectroradiometer (TOMS) measurements. The new method gave an excellent agreement with the satellite measurements. The weekly mean percentage difference between the total ozone and both ADEOS and EP/TOMS was 1% and 2% respectively.