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Proceedings Paper

Rotational vibrational-rotational Raman lidar: design and performance of the RASC Raman lidar at Shigaraki, Japan (34.8 degrees N, 136.1 degrees E)
Author(s): Andreas Behrendt; Takuji Nakamura; Yukihiko Sawai; Michitaka Onishi; Toshitaka Tsuda
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Paper Abstract

The design and the performance of the new Raman lidar of the Radio Science Center for Space and Atmosphere (RASC) at Kyoto University are presented. The system is located at near Shigaraki, Japan, where also one of the world largest atmospheric radars, the MU radar, is operated. Measurement parameters of the lidar are atmospheric temperature (with rotational Raman and with Rayleigh integration technique), water vapor mixing ratio, and optical particle properties. Common Raman lidar takes vibrational-rotational Raman backscatter of nitrogen as a reference signal. In contrast to this, our system makes use of the approximately 10-times stronger pure-rotational Raman signals for deriving both atmospheric temperature and a temperature independent Raman reference signal. This modification leads to a significant reduction of measurement uncertainties. With the RASC lidar, rotational Raman signals with, to our best knowledge, unprecedented intensity can be taken by means of a high-throughput receiver. This allows not only nighttime temperature measurements with a resolution of, e.g., a few minutes near the tropopause, but made also, to our knowledge, the first daytime measurements possible.

Paper Details

Date Published: 9 January 2002
PDF: 12 pages
Proc. SPIE 4484, Lidar Remote Sensing for Industry and Environment Monitoring II, (9 January 2002); doi: 10.1117/12.452774
Show Author Affiliations
Andreas Behrendt, Kyoto Univ. (Japan)
Takuji Nakamura, Kyoto Univ. (Japan)
Yukihiko Sawai, Kyoto Univ. (Japan)
Michitaka Onishi, Kyoto Univ. (Japan)
Toshitaka Tsuda, Kyoto Univ. (Japan)

Published in SPIE Proceedings Vol. 4484:
Lidar Remote Sensing for Industry and Environment Monitoring II
Upendra N. Singh, Editor(s)

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