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- W4384338105 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Two global networks of ground-based Fourier transform spectrometers are measuring abundances of atmospheric trace gases that absorb in the near and mid infrared, Network for the Detection of Atmospheric Composition Change (NDACC) and Total Carbon Column Observing Network (TCCON). The first lacks a CO2 product, therefore this study focuses on developing a xCO2 retrieval method for NDACC from a spectral window in the 4800 cm<sup>−1</sup> region. This retrieval will allow to extend ground-based measurements back in time, which we will demonstrate with historical data available from Ny-Ålesund. This region is covered by both TCCON and NDACC, which is an advantage for collocated comparisons where available. The results are compared with collocated TCCON measurements of column-averaged dry-air mole fractions of CO2 (denoted by xCO2) in Ny-Ålesund, Svalbard and only TCCON in Burgos, Philippines. We found that it is possible to retrieve xCO2 from NDACC spectra with a precision from 0.2 % . The comparison between the new retrieval to TCCON showed that the sensitivity of the new retrieval is high in the troposphere and lower in the upper stratosphere, similar to TCCON, and that the seasonality is well captured. We determined an optimal retrieval setup covered in section 7." @default.
- W4384338105 created "2023-07-15" @default.
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- W4384338105 date "2023-07-14" @default.
- W4384338105 modified "2023-10-01" @default.
- W4384338105 title "Reply on RC2" @default.
- W4384338105 doi "https://doi.org/10.5194/amt-2023-32-ac2" @default.
- W4384338105 hasPublicationYear "2023" @default.
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