Depolarization properties of Asian dust (Kosa) measured from 1998 to 2000 at Okayama, Japan

He Wei; Ryuji Koga; Kengo Iokibe; Osami Wada; Yoshitaka Toyota; Naoki Kagawa

doi:10.1117/12.417092

13 February 2001 Depolarization properties of Asian dust (Kosa) measured from 1998 to 2000 at Okayama, Japan

He Wei, Ryuji Koga, Kengo Iokibe, Osami Wada, Yoshitaka Toyota, Naoki Kagawa

Proceedings Volume 4153, Lidar Remote Sensing for Industry and Environment Monitoring; (2001) https://doi.org/10.1117/12.417092
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

A Mie lidar system was built at Okayama University in 1998. The system is featured by the ability of discriminating depolarization of received signals with a spatial resolution of 15m. Examinations were conducted on the received rangenormalized signal and the depolarization ratio from Asian dust. Intense Asian dust occurred in springs of 1998-2000. Vertical distribution of Asian dust was found to be inhomogeneous contrary to the homogeneity assumption employed in preceding works. Multiple scattering in the layers of Asian dust also observed. Complicated structure of Asian dust wrapped by liquid or water droplets were also conjectured from the sudden changes of depolarization ratio in Asian dust layers.

Citation Download Citation

He Wei, Ryuji Koga, Kengo Iokibe, Osami Wada, Yoshitaka Toyota, and Naoki Kagawa "Depolarization properties of Asian dust (Kosa) measured from 1998 to 2000 at Okayama, Japan", Proc. SPIE 4153, Lidar Remote Sensing for Industry and Environment Monitoring, (13 February 2001); https://doi.org/10.1117/12.417092

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