95-GHz cloud radar and lidar systems: preliminary results of cloud microphysics

Hajime Okamoto; Suginori Iwasaki; Motoaki Yasui; Hiroaki Horie; Hiroshi Kuroiwa; Hiroshi Kumagai

doi:10.1117/12.410618

21 December 2000 95-GHz cloud radar and lidar systems: preliminary results of cloud microphysics

Hajime Okamoto, Suginori Iwasaki, Motoaki Yasui, Hiroaki Horie, Hiroshi Kuroiwa, Hiroshi Kumagai

Proceedings Volume 4152, Microwave Remote Sensing of the Atmosphere and Environment II; (2000) https://doi.org/10.1117/12.410618
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

In this paper, we report the preliminary studies of cloud microphysics by using ground-based 95GHz cloud radar and lidar systems. Although the active sensors are expected to increase our knowledge about clouds, e.g., vertical profiles of clouds, the single use of radar or lidar gives limited information and it is difficult to retrieve the ice water content (IWC and effective radius of cloud particles. We develop the new method for the combinational use of radar and lidar signals. The algorithm includes the attenuation corrections on both signals which is a long standing problems especially in the analysis of lidar signals. The system enables to retrieve the vertical profiles of effective radius and IWC in each cloud layer. Since both active sensors have dual polarization capabilities, the system provides a unique opportunity to study cloud microphysics form many aspects, e.g., vertical profiles of the relationship between effective radius, IWC and/or depolarization ratio. This system also has a great potential to study aerosol-cloud interaction studies.

Citation Download Citation

Hajime Okamoto, Suginori Iwasaki, Motoaki Yasui, Hiroaki Horie, Hiroshi Kuroiwa, and Hiroshi Kumagai "95-GHz cloud radar and lidar systems: preliminary results of cloud microphysics", Proc. SPIE 4152, Microwave Remote Sensing of the Atmosphere and Environment II, (21 December 2000); https://doi.org/10.1117/12.410618

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