Development of a high-spectral-resolution lidar for continuous observation of aerosols in South America

Yoshitaka Jin; Nobuo Sugimoto; Tomoaki Nishizawa; Pablo Ristori; Sebastian Papandrea; Lidia Otero; Eduardo Quel; Akira Mizuno

doi:10.1117/12.2223879

5 May 2016 Development of a high-spectral-resolution lidar for continuous observation of aerosols in South America

Yoshitaka Jin, Nobuo Sugimoto, Tomoaki Nishizawa, Pablo Ristori, Sebastian Papandrea, Lidia Otero, Eduardo Quel, Akira Mizuno

Author Affiliations +

Proceedings Volume 9879, Lidar Remote Sensing for Environmental Monitoring XV; 987912 (2016) https://doi.org/10.1117/12.2223879
Event: SPIE Asia-Pacific Remote Sensing, 2016, New Delhi, India

Abstract

Continuous monitoring of aerosol profiles using lidar is helpful for a quasi-real-time indication of aerosol concentration. For instance, volcanic ash concentration and its height distribution are essential information for plane flights. Depolarization ratio and multi-wavelength measurements are useful for characterizing aerosol types such as volcanic ash, smoke, dust, sea-salt, and air pollution aerosols. High spectral resolution lidar (HSRL) and Raman scattering lidar can contribute to such aerosol characterization significantly since extinction coefficients can be measured independently from backscattering coefficients. In particular, HSRL can measure aerosol extinction during daytime and nighttime with a high sensitivity. We developed an HSRL with the iodine filter method for continuous observation of aerosols at 532nm in the northern region of Argentina in the framework of the South American Environmental Atmospheric Risk Management Network (SAVER.Net)/SATREPS project. The laser wavelength of the HSRL was controlled by a feedback system to tune the laser wavelength to the center of an iodine absorption line. The stability of the laser wavelength with the system satisfied the requirement showing very small systematic errors in the retrieval of extinction and backscatter.

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Yoshitaka Jin, Nobuo Sugimoto, Tomoaki Nishizawa, Pablo Ristori, Sebastian Papandrea, Lidia Otero, Eduardo Quel, and Akira Mizuno "Development of a high-spectral-resolution lidar for continuous observation of aerosols in South America", Proc. SPIE 9879, Lidar Remote Sensing for Environmental Monitoring XV, 987912 (5 May 2016); https://doi.org/10.1117/12.2223879

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KEYWORDS

Aerosols

LIDAR

Backscatter

Raman spectroscopy

Absorption

Signal attenuation

Iodine

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