A. F. Pazmiño1, E. Wolfram1, M. B. Lavorato2, E. J. Quel2, S. Godin 3 and G. Megie3
1Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
2CEILAP (CITEFA-CONICET), Villa Martelli, Buenos Aires, Argentina.
3Institut Pierre Simon Laplace, Paris VI, Paris, France.
A ground-based DIfferential Absorption Lidar (DIAL) system has been implemented at CEILAP (CITEFA-CONICET) laboratories (34° 33' S, 58° 30' W), located in the Buenos Aires industrial suburbs. The goal was to perform measurements of the stratospheric ozone layer. Since December 1998 systematic measurements of ozone concentration profiles from 18 to 35 Km altitude are performed. A description of the experimental DIAL system and the statistical and systematic errors are given. The signals processing take into account the influence of the temperature profile on the ozone cross section. The temperature data is obtained from the radiosonde of Ezeiza International Airport, given by the National Weather Service (SMN). The CIRA model is used to extrapolate the temperature profiles up to 50 Km. The evolution of the stratospheric ozone profile is studied for different months. Results are compared with the data obtained by different satellites like SAGE II and HALOE. The spatial and temporal evolution of the satellites must be tacked into account.
