Flux correction for closed-path laser spectrometers without internal water vapor measurements.

The article presents a study which explores the concept of flux correction for closed-path laser spectrometers. The study uses a Fast Greenhouse Gas Analyzer in an effort to look into water's (H2O) phase shift and damping with respect of methane (CH4) signal. It discovers that the measurement of trace gas flux is directly affected by the damping of the water vapor signal and cross-sensitivity effects to water.