Articles | Volume 14, issue 2
Atmos. Meas. Tech., 14, 1239–1252, 2021
https://doi.org/10.5194/amt-14-1239-2021
Atmos. Meas. Tech., 14, 1239–1252, 2021
https://doi.org/10.5194/amt-14-1239-2021

Research article 17 Feb 2021

Research article | 17 Feb 2021

Characterization and potential for reducing optical resonances in Fourier transform infrared spectrometers of the Network for the Detection of Atmospheric Composition Change (NDACC)

Thomas Blumenstock et al.

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Short summary
This study investigates the level of channeling (optical resonances) of each FTIR spectrometer within the Network for the Detection of Atmospheric Composition Change (NDACC). Since the air gap of the beam splitter is a significant source of channeling, we propose new beam splitters with an increased wedge of the air gap. This study shows the potential for reducing channeling in the FTIR spectrometers operated by the NDACC, thereby increasing the quality of recorded spectra across the network.