[M-SD42] 将来の衛星地球観測

[MSD42-11] ドップラー雲レーダと多視野角・高スペクトル分解・ 偏光ドップラーライダによる雲・エアロゾル・鉛直流観測ミッション

岡本 創¹、鈴木 健太郎²、*西澤 智明³、神 慶孝³、石井 昌憲⁴、富田 英一⁵ (1.九州大学応用力学研究所、2.東京大学大気海洋研究所、3.国立環境研究所、4.東京都立大学、5.宇宙航空研究開発機構)

キーワード：雲レーダ、ライダ、雲、エアロゾル、鉛直速度

We propose a synergy space-borne observation mission using 94GHz Doppler cloud radar and high spectral resolution lidar (HSRL) with doppler, multi-field-of-view, and depolarization measurement functions to study clouds, aerosol and convection. Expected products include (1) microphysics of clouds, aerosols and precipitations, (2) fall velocity of clouds, rain and snow particles, and (3) air motion in cloud, above clouds and in clear sky condition. Lidar wavelengths are 532nm and 1064nm. HSRL function is considered for 532nm. Polarization capability is implemented for 532nm and 1064nm. Direct detection method is used to estimate Doppler velocity at 532nm. Both 94GHz cloud radar and lidar have a function to observe Doppler velocity at multiple directions, including nadir and off-nadir directions, to derive three-dimensional air motion inside clouds as well as in clear sky, respectively. High spectral resolution function at 532nm with polarization distinguishes cloud particle type and aerosols. The lidar has multiple-field-of-view in order to obtain information from relatively thick clouds. Since the 94GHz cloud radar has capability to observe inside of the clouds and lidar measures aerosols and clouds, it will be an extended version of space-mission to CloudSat and CALIPSO launched in 2006 and EarthCARE satellite in 2023. The mission will also serve to construct long continuous records of clouds and aerosols for climate change studies with CloudSat, CALIPSO, EarthCARE and future missions such as ACCP.