Data Reduction Method for the Laser Long-Path Absorption Measurement of Atmospheric Trace Species Using the Retroreflector in Space

Nobuo SUGIMOTO  Atsushi MINATO  

IEICE TRANSACTIONS on Communications   Vol.E78-B   No.12   pp.1585-1590
Publication Date: 1995/12/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Satellite Remote Sensing)
laser long-path absorption method,  Retroreflector in Space (RIS),  ADEOS,  atmospheric trace species,  inversion method,  

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Data reduction method for the earth-satellite-earth laser long-path absorption measurements of atmospheric trace species using the Retroreflector in Space (RIS) on the Advanced Earth Observing Satellite (ADEOS) is described. In the RIS experiment, atmospheric absorption will be measured with single-longitudinal-mode pulsed CO2 lasers and their second and third harmonics. High-resolution absorption spectra are measured by using the Doppler shift of the return beam which is caused by the satellite movement. Vertical profiles of O3 and CH4 are retrieved from the measured absorption line shapes with the inversion method. Also, column contents of CFC12, HNO3, CO2, CO, N2O are derived by the least squares method with assumptions on the relative vertical profiles. Errors in the measurement were evaluated by computer simulation.