Articles | Volume 12, issue 11
Atmos. Meas. Tech., 12, 6125–6141, 2019
https://doi.org/10.5194/amt-12-6125-2019
Atmos. Meas. Tech., 12, 6125–6141, 2019
https://doi.org/10.5194/amt-12-6125-2019

Research article 25 Nov 2019

Research article | 25 Nov 2019

Retrieval of atmospheric CH4 vertical information from ground-based FTS near-infrared spectra

Minqiang Zhou et al.

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Latest update: 07 Dec 2021
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Short summary
In this study, CH4 vertical profile is retrieved by SFIT4 code from FTIR NIR spectra based on six sites during 2016–2017. The degree of freedom for signal of the SFIT4NIR retrieval is about 2.4, with two distinct species of information in the troposphere and in the stratosphere. By comparison against other measurements, e.g. TCCON standard products, satellite observations and AirCore measurements, the uncertainties of the SFIT4NIR total column and partial columns are estimated and discussed.