JP1.4
Studies of clouds by shipborne 95GHz radar and lidar system during the Mirai cruises
Hajime Okamoto, Tohoku University, Sendai, Miyagi, Japan; and A. Kamei, H. Kuroiwa, H. Kumagai, N. Sugimoto, I. Matsui, A. Shimizu, and T. Nakajima
We develop the new forward algorithm for the retrieval of effective radius of cloud particles and ice/liquid water content (IWC/LWC) by using collocated the 95-GHz (3.16mm) cloud radar (CPR) and lidar. One unique feature of the algorithm is the attenuation-correction to the lidar signals. Several numerical analyses are performed for the potential sources of algorithm errors in order to characterize the errors in the retrieval values.
We demonstrate the retrieval of the cloud microphysics to the ground based data. The ground based synergy experiments have been performed for two years in Kashima, Japan. We also performed the two shipborne experiments by using Research vessel Mirai with the two active sensors; The MR01-K02 cruise is for 2 weeks in May, 2001 over Pacific Ocean near Japan, the MR01-K05 for three months from mid of September to mid of December 2001 over tropical region. It is expected to procure the longitudinal and latitudinal distribution of warm and cold clouds because of their large horizontal coverages, including their microphysics by applying the synergy algorithm to the data sets. We examine the vertical distribution of the effective radius, IWC/LWC, fall velocity and depolarization ratio as well as the interrelationships between them. The vertical distributions of effective radius and fall velocity turn out to be well correlated. The comprehensive analyses of these data sets by the application of the algorithms are presented in the conference.
Joint Poster Session 1, Cloud Remote Sensing (Joint between 11th Cloud Physics and 11th Atmospheric Radiation)
Monday, 3 June 2002, 1:00 PM-3:00 PM
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Extended Abstract (148K)