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A new inversion algorithm to retrieve instantaneous values for the aerosol optical depth from spectral irradiance measurements

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3 Author(s)
Martinez-Lozano, J.A. ; Dept. de Termodinamica, Valencia Univ., Spain ; Pilar Utrillas, M. ; Tena, F.

A new algorithm to determine both the instantaneous values of the aerosol optical depth ταλ and the daily atmospheric ozone content Oz is presented. The algorithm is based on inversion methods and uses instantaneous experimental data of the total atmospheric optical depth τTλ. A description of the method and an analysis of the Oz and ταλ values for clear days in Valencia (Spain) is presented. The values estimated by means of this algorithm have been compared with those obtained by the algorithm proposed by Flittner et al. (1993) and by an algorithm, based on Flittner but employing the covariance matrix associated with the experimental errors in its calculations. Experimental measurements of direct spectral irradiance at normal incidence have been used as input parameters in these algorithms. The error analysis shows that the errors introduced by this method are small. Furthermore, the proposed method has the additional advantage of showing the variations of the aerosol optical depth with the optical air mass

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:38 ,  Issue: 1 )