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[A-3.1.1 Development of a Spectroscopic Method for Earth-Satellite-Earth Laser Long-Path Absorption Measurements]

[Contact Person]

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

[Total Budget for FY1990-1994]

133,391,000 Yen (FY1994 28,775,000 Yen)

[Abstract]

　Spectroscopic method for earth-satellite-earth laser long-path absorption measurements of atmospheric trace species has been established. The ground laser transmitter/receiver system and data processing system based on the method were developed for the experiment using the Retroreflector in Space(RIS) for the ADEOS satellite. The ground system employs two single-longitudinal-mode pulsed CO₂ lasers. High resolution atmospheric absorption spectra are measured by using the Doppler shift of the return light caused by the movement of the satellite. Vertical profiles of O₃ and CH₄, and column contents of CFC12, HNO₃, CO, N₂O, etc. will be measured in the RIS project.

[Key Words]

Ozone, Atmospheric Trace Species, Remote Sensing, Laser Long-Path Absorption, Satellite Retroreflector