An Improvement on Retrieval Method of Total Ozone's Determination Using Backscattered Ultraviolet Earth Radiances' Measurements

Values of the total ozone content of an atmospheric column are estimated from the simulated measurements of the intensity of radiation backscattered by a horizontally homogeneous earth-atmosphere system by means of SBDART radiative transfer computation mode with atmo- sphere containing varions kinds of aerosols. The retrieval method used is the Version7 algorithm. When all kinds of aerosols are present in the atmosphere the retrieval error is analyzed and the main reason which brings the error is the assumption of the residues being linear at the properly chosen triplet of wavelengths. In the paper a method is introduced to correct the initial ozone estimate Ω0 using the intensity radiation backscattered measured at different continuous ultraviolet spectral region which is selected on the basis of the ozone slant column density sΩ0. At last the results obtained by the new method and Version7 algorithm are compared. The comparing result proves the new method＇s validity.