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[A−3.2 Studies on Data Utilization Methods for Space-Borne Lidars]


[Contact person]

      Nobuo Sugimoto
      National Institute for Environmental Studies
      Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan
      Phone +81-298-50-2459, Fax +81-298-51-4732
      E-mail nsugimot@nies.go.jp


[Total Budget for FY1998-2000]

 72,500,000 Yen
 (FY 1998; 22,903,000 Yen)

[Abstract]

 Space-borne lidars are effective tools for observing global distributions of clouds and aerosols, which play important roles in the radiative processes related to the climate change. This study aims at establishing data reduction algorithms and data utilization methods for space-borne lidars. Data reduction algorithms for deriving distributions and optical characteristics of clouds and aerosols were studied by means of computer simulation. The algorithm was tested using the simulation data generated with a space lidar simulator program based on an atmospheric model and the realistic lidar system parameters. The developed algorithm was also applied to the data of the Lidar In-Space Technology Experiment (LITE) which was carried out by NASA in 1994 with the space shuttle. Data utilization methods for applying space lidar data to climate studies were studied using data from ground-based lidars and a ship-board lidar. Methods for validating space-borne lidar observation and researches combining space-borne lidar data and ground-based (ship-board) lidars were investigated. Applications to validation of climate models were also investigated.


[Key Words]

 space-borne lidar, laser radar, cloud, cirrus, aerosol, climate model