Pure Rotational Raman Lidar for Temperature Measurements from 5-40 Km Over Wuhan, China
1 Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan 430071, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
3 Department of Atmospheric and Planetary Sciences, Center for Atmospheric Sciences, Hampton University, Hampton, Virginia 23668, USA.
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Published online: 7 June 2016
In this paper a pure rotational Raman lidar (PRR) was established for the atmospheric temperature measurements from 5 km to 40 km over Wuhan, China (30.5°N, 114.5°E). To extract the expected PRR signals and simultaneously suppress the elastically backscattered light, a high-spectral resolution polychromator for light splitting and filtering was designed. Observational results revealed that the temperature difference measured by PRR lidar and the local radiosonde below 30 km was less than 3.0 K. The good agreement validated the reliability of the PRR lidar. With the 1-h integration and 150-m spatial resolution, the statistical temperature error for PRR lidar increases from 0.4 K at 10 km up to 4 K at altitudes of about 30 km. In addition, the whole night temperature profiles were obtained for study of the long-term observation of atmospheric fluctuations.
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