Articles | Volume 12, issue 1
Atmos. Meas. Tech., 12, 35–50, 2019
https://doi.org/10.5194/amt-12-35-2019
Atmos. Meas. Tech., 12, 35–50, 2019
https://doi.org/10.5194/amt-12-35-2019

Research article 03 Jan 2019

Research article | 03 Jan 2019

Using a speed-dependent Voigt line shape to retrieve O2 from Total Carbon Column Observing Network solar spectra to improve measurements of XCO2

Joseph Mendonca et al.

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Latest update: 17 Sep 2021
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Short summary
In order to study the carbon cycle, accurate remote sensing measurements of XCO2 are required. This means that accurate absorption coefficients of CO2 and O2 in the retrieval algorithm are required. We use high-resolution laboratory spectra of O2 to derive accurate absorption coefficients. By applying the O2 absorption coefficients to the retrieval of XCO2 from ground-based solar absorption spectra we show that the error on retrieved XCO2 is decreased.