Lidar measurements of dynamics and composition in earth's atmosphere

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The University of Western Ontario's Purple Crow Lidar (PCL) measures temperature and composition of Earth's atmosphere from the surface to 110 km altitude. The PCL is able to make these measurements at unprecedented accuracy by using a 2.65 m diameter liquid mirror telescope. The liquid mirror is a Canadian technology which allows large mirrors to be built at a fraction of the cost of traditional glass mirrors. The long-term objectives of this research program are to search for atmospheric change and to help improve weather forecasting.