Articles | Volume 13, issue 10
https://doi.org/10.5194/amt-13-5149-2020
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, Isamu Morino, Voltaire A. Velazco, Theresa Klausner, Gerry Bagtasa, Matthäus Kiel, Matthias Frey, Akihiro Hori, Osamu Uchino, Tsuneo Matsunaga, Nicholas M. Deutscher, Joshua P. DiGangi, Yonghoon Choi, Glenn S. Diskin, Sally E. Pusede, Alina Fiehn, Anke Roiger, Michael Lichtenstern, Hans Schlager, Pao K. Wang, Charles C.-K. Chou, Maria Dolores Andrés-Hernández, and John P. Burrows

Data sets

TCCON data from Tsukuba (JP), 125HR, Release GGG2014.R2 I. Morino, T. Matsuzaki, and M. Horikawa https://doi.org/10.14291/tccon.ggg2014.tsukuba02.r2

TCCON data from Burgos, Ilocos Norte (PH), Release GGG2014.R0 I. Morino, V. A. Velazco, A. Hori, O. Uchino, and D. W. T. Griffith https://doi.org/10.14291/tccon.ggg2014.burgos01.r0

TCCON data from Rikubetsu (JP), Release GGG2014.R2 I. Morino, N. Yokozeki, T. Matsuzaki, and M. Horikawa https://doi.org/10.14291/tccon.ggg2014.rikubetsu01.r2

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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.