Articles | Volume 13, issue 10
Atmos. Meas. Tech., 13, 5149–5163, 2020
https://doi.org/10.5194/amt-13-5149-2020

Special issue: Effect of Megacities on the Transport and Transformation of...

Atmos. Meas. Tech., 13, 5149–5163, 2020
https://doi.org/10.5194/amt-13-5149-2020

Research article 30 Sep 2020

Research article | 30 Sep 2020

Validation of XCO2 and XCH4 retrieved from a portable Fourier transform spectrometer with those from in situ profiles from aircraft-borne instruments

Hirofumi Ohyama et al.

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Short summary
Column-averaged dry-air mole fractions of CO2 and CH4 measured by a solar viewing portable Fourier transform spectrometer (EM27/SUN) were validated with in situ profile data obtained during the transfer flights of two aircraft campaigns. Atmospheric dynamical properties based on ERA5 and WRF-Chem were used as criteria for selecting the best aircraft profiles for the validation. The resulting air-mass-independent correction factors for the EM27/SUN data were 0.9878 for CO2 and 0.9829 for CH4.