Ground-based (Bruker 125 HR) and satellite (OCO-2) datasets of simultaneous CO2 measurements in the vicinity of St. Petersburg were compared. Correction of the ground-based XCO2 values by 2.5% and the choice of the optimal setup during spectral analysis allowed good agreement to be reached between the satellite and groundbased measurements. The bias between the two datasets was –0.01–0.16 ppm (–0.00–0.04%), standard deviations of the means, 1.42–1.49 ppm (0.35–0.37%), with a spatial mismatch of the XCO2 data pairs of 100–300 km. Such small disagreement between the two types of measurements permits both methods to be used to solve the inverse problem of atmospheric transfer, i.e., estimation of anthropogenic emissions of CO2.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 87, No. 5, pp. 816–820, September–October, 2020.
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Virolainen, Y.A., Nikitenko, A.A. & Timofeyev, Y.M. Intercalibration of Satellite and Ground-Based Measurements of CO2 Content at the NDACC St. Petersburg Station. J Appl Spectrosc 87, 888–892 (2020). https://doi.org/10.1007/s10812-020-01085-0
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DOI: https://doi.org/10.1007/s10812-020-01085-0