Stratopheric Ozone Lidar Mobile System at Buenos Aires, Argentina

E. WOLFRAM, A. PAZMIÑO, L. A. OTERO, J. SALVADOR, R. PIACENTINE, J. PORTENEUVE, S. GODIN-BEEKMANN, E. QUEL

Reviewed and Revised Papers Presented at the 22nd International Laser Radar Conference

ESA

Año: 2004 vol. II p. 589 - 592

0379-6566

A new ground-based DIfferential Absorption Lidar (DIAL) systems has been developed at CEILAP (CITEFA-CONICET) laboratory (34º 33’ S, 58º 30’W), located in the Buenos Aires industrial suburbs, Argentina. This system is an improvement of the previous one operative since 1999. The DIAL technique is used for the determination of the stratospheric ozone profile between 15 km and 45 km. The XeCl excimer laser which emit at a wavelength of 308 nm is used since ozone has at this wavelength a strong absorption line. A Nd-YAG laser 355 nm third harmonic is employed as a reference wavelength. This new instrument has an increased emitter performance, a bigger optic reception area. The detection channels used for stratospheric ozone retrieval have been increased to six. The two elastically backscattered signals of the emitted wavelengths are detected to high and low energy. Also the two backscattered signals corresponding to the first Stokes nitrogen Raman spectrum channels will be employed to avoid problems linked to stratospheric aerosol contamination. A detailed description of the stratospheric ozone lidar, placed inside a portable shelter, is given in the present work together with the first ozone profile measurement made with this instrument.