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Preprints
https://doi.org/10.5194/essd-2019-172
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2019-172
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: data description paper 11 Nov 2019

Submitted as: data description paper | 11 Nov 2019

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A revised version of this preprint was accepted for the journal ESSD and is expected to appear here in due course.

A new site: ground-based FTIR XCO2, XCH4 and XCO measurements at Xianghe, China

Yang Yang1,3,2, Minqiang Zhou2, Bavo Langerock2, Mahesh Kumar Sha2, Christian Hermans2, Ting Wang1,3, Denghui Ji1,3, Corinne Vigouroux2, Nicolas Kumps2, Gengchen Wang1,3, Martine De Mazière2, and Pucai Wang1,3 Yang Yang et al.
  • 1LAGEO, the Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
  • 2Royal Belgian Institute for Space Aeronomy, Brussels, Belgium
  • 3University of Chinese Academy of Sciences, Beijing, China

Abstract. The column-averaged dry-air mole fractions of CO2 (XCO2), CH4 (XCH4) and CO (XCO) have been measured with a Bruker IFS 125HR Fourier transform infrared spectrometer (FTIR) at Xianghe (39.75° N, 116.96° E, North China) since June 2018. The site and the FTIR system are described in this study. The instrumental setup follows the guidelines of the Total Carbon Column Observing Network (TCCON), and the near-infrared spectra are recorded by an InGaAs detector together with a CaF2 beam splitter. The HCl cell measurements that are recorded regularly to derive the instrument line shape (ILS) show that the instrument is correctly aligned. The Xianghe site lies in a polluted area in North China where there are currently no TCCON sites. It can fill the TCCON gap in this region and expand the global coverage of the TCCON measurements. The TCCON standard retrieval code (GGG2014) is applied to retrieve XCO2, XCH4 and XCO. The time series, seasonal cycles and day-to-day variations of XCO2, XCH4 and XCO measurements at Xianghe between June 2018 and July 2019 are shown and discussed. In addition, the FTIR measurements have been used to validate Orbiting Carbon Observatory-2 (OCO-2) and Tropospheric Monitoring Instrument (TROPOMI) satellite observations, as also shown in this paper. The Xianghe FTIR CO2, CH4 and CO data can be accessed at https://doi.org/10.18758/71021049 (Yang et al., 2019).

Yang Yang et al.

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Yang Yang et al.

Data sets

Ground-based FTIR CO2, CH4 and CO measurements at Xianghe, China Yang, Y., Zhou, M., Langerock, B., Sha, M., Hermans, C., Wang, T., Ji, D., Vigouroux, C., Kumps, N., Wang, G., De Mazière, M., and Wang, P https://doi.org/10.18758/71021049

Yang Yang et al.

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Short summary
The column-averaged dry-air mole fractions of CO2 (XCO2), CH4 (XCH4) and CO (XCO) have been measured with a Bruker IFS 125HR Fourier transform infrared spectrometer (FTIR) at Xianghe (39.75° N, 116.96° E, North China) since June 2018. The instrumental setup follows the guidelines of the Total Carbon Column Observing Network (TCCON). The site and the FTIR system are described in this study. The FTIR measurements are discussed and been applied for satellite validations.
The column-averaged dry-air mole fractions of CO2 (XCO2), CH4 (XCH4) and CO (XCO) have been...
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