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Proceedings Paper

Path-averaged atmospheric CO2 measurement using a 1.57 μm active remote sensor compared with multi-positioned in situ sensors
Author(s): Daisuke Sakaizawa; Shuji Kawakami; Masakatsu Nakajima; Yosuke Sawa; Hidekazu Matsueda; Kazuhiro Asai; Syumpei Kameyama; Masaharu Imaki; Yoshihito Hirano; Shinichi Ueno
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Paper Abstract

The Green-house gas Observation SATellite (GOSAT) was launched to determine the continental CO2 inventories. Its sensor is based on a passive remote sensing technique developed to achieve less than 1% relative accuracy for atmospheric CO2 measurements. Meanwhile, a laser remote sensor with the differential absorption spectrometry has been developed for a candidate of a future space-based mission to observe the atmospheric CO2 or other trace gases. A prototype of the newly developed active remote sensor has been performed to demonstrate a properly validated performance for ground-based and airborne systems. This study shows the results of the in-house and field measurements. The in-house measurement demonstrated the linearity with the correlation coefficient of over 0.99 between the instrumental response and the known CO2 density in the cell. The diurnal variation obtained from our system is consistent (correlation coefficient of 0.95) with that of multi-positioned in situ sensors, indicates the spatial responsibility of the atmospheric CO2 obtained from our remote sensor with two ~3-km observation paths.

Paper Details

Date Published: 11 August 2009
PDF: 8 pages
Proc. SPIE 7460, Lidar Remote Sensing for Environmental Monitoring X, 746006 (11 August 2009); doi: 10.1117/12.828573
Show Author Affiliations
Daisuke Sakaizawa, Japan Aerospace Exploration Agency (Japan)
Shuji Kawakami, Japan Aerospace Exploration Agency (Japan)
Masakatsu Nakajima, Japan Aerospace Exploration Agency (Japan)
Yosuke Sawa, Meteorological research institute (Japan)
Hidekazu Matsueda, Meteorological research institute (Japan)
Kazuhiro Asai, Tohoku Institute of Technology (Japan)
Syumpei Kameyama, Mitsubishi Electric Corp. (Japan)
Masaharu Imaki, Mitsubishi Electric Corp. (Japan)
Yoshihito Hirano, Mitsubishi Electric Corp. (Japan)
Shinichi Ueno, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 7460:
Lidar Remote Sensing for Environmental Monitoring X
Upendra N. Singh, Editor(s)

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