Design of a new DIAL system for tropospheric and lower stratospheric ozone monitoring in Northern Greece |
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| Institution: | 1. Physics Department, National Technical University of Athens, Zografou Campus, Greece;2. Service d''Aéronomie du CNRS, B. P 3, 91371 Verrières-le-Buisson, Cedex, France;3. Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, PO. Box 149, Thessalonikki, Greece;1. Fenner School of Environment and Society, Australian National University, Canberra, Australia;2. Solar Consulting Services, Colebrook, NH, USA;1. Department of Space Physics, School of Electronic Information, Wuhan University, Wuhan, Hubei, China;2. School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan 430200, China;1. School of Management, ShenZhen Polytechnic, Shenzhen, China;2. Department of Advanced Design and Systems Engineering, City University of Hong Kong, Hong Kong, China;3. School of Design, South China University of Technology, Guangzhou, China;4. Shenzhen Research Institute, City University of Hong Kong, Shenzhen, China;1. Atmospheric Sciences Research Center, University at Albany, SUNY, Albany, NY, USA;2. School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, USA |
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| Abstract: | An improved ozone Differential Absorption Lidar (DIAL) system has been designed for tropospheric and lower stratospheric ozone monitoring in Northern Greece. The system is based on a frequency quadrupled pulsed Nd:YAG laser and the Raman shifting technique in D2 and H2 gases. The lidar system emits simultaneously 4 wavelengths (266 mn, 289 nm, 299 nm and 316 nm) at 10 Hz repetition rate using a single low pressure Raman cell. The optical receiving system is based on a 50 cm concave telescope which is directly coupled to a specially conceived grating spectrometer. This lidar system uses analog (12 bits-40 MHz) and photon counting (250 MHz) detection systems, able to measure lidar signals up 16 km height. Ozone vertical profiles are to be measured from 0.8 km up to 15 km height, with a 30–500 m spatial and a 1-minute temporal resolution. In this paper the major technical characteristics of the improved lidar system are presented. The system is foreseen to provide the first daytime/nighttime ozone vertical profiles during early winter 1999. |
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