OBJECTIVE ALGORITHMS FOR THE AEROSOL PROBLEM

Retrieval of the aerosol size distribution from optical measurements a t ground level is well known to be a difficult problem. Nowadays objec tive techniques that can give a solution without the intervention of t he researcher do not exist; We propose several objective methods that are well based in the mathematical and physical points of view. Their accuracy is evaluated and the top performance of the objective inversi on techniques is presented. Moreover physical and experimental suggest ions can be drawn to improve the accuracy. Inversions with experimenta l optical depths are also shown.