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In Situ and Real-Time Measurement of Methane Concentration in Rice Paddy Field at Okayama University Using Tunable Diode Laser Absorption Spectrometry

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Copyright (c) 1993 The Japan Society of Applied Physics
, , Citation Naoki Kagawa et al 1993 Jpn. J. Appl. Phys. 32 244 DOI 10.1143/JJAP.32.244

1347-4065/32/1R/244

Abstract

A transportable device based on absorption spectrometry was constructed and the atmospheric methane concentration over a rice paddy was measured. An open optical path of 50 m length was employed along with a PbSnTe diode laser. Diurnal change of methane concentration was recorded in association with meteorological parameters. Feasibility was proven for practical application to in situ study of atmospheric methane.

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10.1143/JJAP.32.244