Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON
High-resolution solar absorption spectra, taken within the Network for the Detection of Atmospheric Composition Change Infrared Working Group (NDACC-IRWG) in the mid-infrared spectral region, are used to infer partial or total column abundances of many gases. In this paper we present the retrieval o...
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ftcopernicus:oai:publications.copernicus.org:amt31755 2023-05-15T17:48:27+02:00 Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON Buschmann, Matthias Deutscher, Nicholas M. Sherlock, Vanessa Palm, Mathias Warneke, Thorsten Notholt, Justus 2018-01-15 application/pdf https://doi.org/10.5194/amt-9-577-2016 https://amt.copernicus.org/articles/9/577/2016/ eng eng doi:10.5194/amt-9-577-2016 https://amt.copernicus.org/articles/9/577/2016/ eISSN: 1867-8548 Text 2018 ftcopernicus https://doi.org/10.5194/amt-9-577-2016 2020-07-20T16:24:16Z High-resolution solar absorption spectra, taken within the Network for the Detection of Atmospheric Composition Change Infrared Working Group (NDACC-IRWG) in the mid-infrared spectral region, are used to infer partial or total column abundances of many gases. In this paper we present the retrieval of a column-averaged mole fraction of carbon dioxide from NDACC-IRWG spectra taken with a Fourier transform infrared (FTIR) spectrometer at the site in Ny-Ålesund, Spitsbergen. The retrieved time series is compared to colocated standard TCCON (Total Carbon Column Observing Network) measurements of column-averaged dry-air mole fractions of CO 2 (denoted by xCO 2 ). Comparing the NDACC and TCCON retrievals, we find that the sensitivity of the NDACC retrieval is lower in the troposphere (by a factor of 2) and higher in the stratosphere, compared to TCCON. Thus, the NDACC retrieval is less sensitive to tropospheric changes (e.g., the seasonal cycle) in the column average. Text Ny Ålesund Ny-Ålesund Spitsbergen Copernicus Publications: E-Journals Ny-Ålesund Atmospheric Measurement Techniques 9 2 577 585 |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
High-resolution solar absorption spectra, taken within the Network for the Detection of Atmospheric Composition Change Infrared Working Group (NDACC-IRWG) in the mid-infrared spectral region, are used to infer partial or total column abundances of many gases. In this paper we present the retrieval of a column-averaged mole fraction of carbon dioxide from NDACC-IRWG spectra taken with a Fourier transform infrared (FTIR) spectrometer at the site in Ny-Ålesund, Spitsbergen. The retrieved time series is compared to colocated standard TCCON (Total Carbon Column Observing Network) measurements of column-averaged dry-air mole fractions of CO 2 (denoted by xCO 2 ). Comparing the NDACC and TCCON retrievals, we find that the sensitivity of the NDACC retrieval is lower in the troposphere (by a factor of 2) and higher in the stratosphere, compared to TCCON. Thus, the NDACC retrieval is less sensitive to tropospheric changes (e.g., the seasonal cycle) in the column average. |
format |
Text |
author |
Buschmann, Matthias Deutscher, Nicholas M. Sherlock, Vanessa Palm, Mathias Warneke, Thorsten Notholt, Justus |
spellingShingle |
Buschmann, Matthias Deutscher, Nicholas M. Sherlock, Vanessa Palm, Mathias Warneke, Thorsten Notholt, Justus Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON |
author_facet |
Buschmann, Matthias Deutscher, Nicholas M. Sherlock, Vanessa Palm, Mathias Warneke, Thorsten Notholt, Justus |
author_sort |
Buschmann, Matthias |
title |
Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON |
title_short |
Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON |
title_full |
Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON |
title_fullStr |
Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON |
title_full_unstemmed |
Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON |
title_sort |
retrieval of xco2 from ground-based mid-infrared (ndacc) solar absorption spectra and comparison to tccon |
publishDate |
2018 |
url |
https://doi.org/10.5194/amt-9-577-2016 https://amt.copernicus.org/articles/9/577/2016/ |
geographic |
Ny-Ålesund |
geographic_facet |
Ny-Ålesund |
genre |
Ny Ålesund Ny-Ålesund Spitsbergen |
genre_facet |
Ny Ålesund Ny-Ålesund Spitsbergen |
op_source |
eISSN: 1867-8548 |
op_relation |
doi:10.5194/amt-9-577-2016 https://amt.copernicus.org/articles/9/577/2016/ |
op_doi |
https://doi.org/10.5194/amt-9-577-2016 |
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Atmospheric Measurement Techniques |
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9 |
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2 |
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577 |
op_container_end_page |
585 |
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1766154532107059200 |