TCCON and NDACC XCO measurements: difference, discussion and application
Column-averaged dry-air mole fraction of CO (XCO) measurements are obtained from two ground-based Fourier transform infrared (FTIR) spectrometers networks: the Total Carbon Column Observing Network (TCCON) and the Network for the Detection of Atmospheric Composition Change (NDACC). In this study, th...
Published in: | Atmospheric Measurement Techniques |
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ftaemet:oai:repositorio.aemet.es:20.500.11765/10752 2024-06-23T07:55:45+00:00 TCCON and NDACC XCO measurements: difference, discussion and application Zhou, Minqiang Langerock, Bavo Vigouroux, Corinne Sha, Mahesh Kumar Hermans, Christian Metzger, Jean-Marc Chen, Huilin Ramonet, Michel Kivi, Rigel Heikkinen, Pauli Smale, Dan Pollard, David F. Jones, Nicholas Velazco, Voltaire A. García Rodríguez, Omaira Elena Schneider, Matthias Palm, Mathias Warneke, Thorsten De Mazière, Martine 2019 https://hdl.handle.net/20.500.11765/10752 eng eng European Geosciences Union https://doi.org/10.5194/amt-12-5979-2019 Atmospheric Measurement Techniques. 2019, 12(11), p. 5979–5995 1867-1381 1867-8548 http://hdl.handle.net/20.500.11765/10752 Licencia CC: Reconocimiento CC BY info:eu-repo/semantics/openAccess Measurements Total Carbon Column Observing Network Carbon monoxide info:eu-repo/semantics/article 2019 ftaemet https://doi.org/20.500.11765/1075210.5194/amt-12-5979-2019 2024-06-03T14:17:56Z Column-averaged dry-air mole fraction of CO (XCO) measurements are obtained from two ground-based Fourier transform infrared (FTIR) spectrometers networks: the Total Carbon Column Observing Network (TCCON) and the Network for the Detection of Atmospheric Composition Change (NDACC). In this study, the differences between the TCCON and NDACC XCO measurements are investigated and discussed based on six NDACC/TCCON sites using data over the period 2007–2017. The NDACC XCO measurements are about 5.5 % larger than the TCCON data at Ny-Ålesund, Bremen, and Izaña (Northern Hemisphere), and about 0.3 % larger than the TCCON data at St Denis, Wollongong and Lauder (Southern Hemisphere). The hemispheric dependence of the bias is mainly attributed to their smoothing errors. The systematic smoothing error of the TCCON XCO data varies in the range between 0.2 % (Bremen) and 7.9 % (Lauder), and the random smoothing error in the range between 2.0 % and 3.6 %. The systematic smoothing error of NDACC data is between 0.1 % and 0.8 %, and the random smoothing error of NDACC data is about 0.3 %. For TCCON data, the smoothing error can be significant in that it is much higher than the reported uncertainty for TCCON XCO. To reduce the influence from the a priori profiles and different vertical sensitivities, the scaled NDACC a priori profiles are used as the common a priori profiles for comparing TCCON and NDACC retrievals. As a result, the biases between TCCON and NDACC XCO measurements become more consistent (5.6–8.5 %) with a mean value of 6.8 % at these sites. To understand the remaining bias, regular AirCore measurements at Orleans and Sodankylä are compared to co-located TCCON measurements. It is found that TCCON XCO measurements are 6.0 ± 1.9 % and 6.9 ± 2.5 % smaller than the AirCore measurements at Orleans and Sodankylä respectively, indicating that the scaling factor of TCCON XCO data should be around 1.0000 instead of 1.0672. Further investigations should be carried out in the TCCON community to determine the correct ... Article in Journal/Newspaper Ny Ålesund Ny-Ålesund Sodankylä ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) Ny-Ålesund Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Orleans ENVELOPE(-60.667,-60.667,-63.950,-63.950) Atmospheric Measurement Techniques 12 11 5979 5995 |
institution |
Open Polar |
collection |
ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) |
op_collection_id |
ftaemet |
language |
English |
topic |
Measurements Total Carbon Column Observing Network Carbon monoxide |
spellingShingle |
Measurements Total Carbon Column Observing Network Carbon monoxide Zhou, Minqiang Langerock, Bavo Vigouroux, Corinne Sha, Mahesh Kumar Hermans, Christian Metzger, Jean-Marc Chen, Huilin Ramonet, Michel Kivi, Rigel Heikkinen, Pauli Smale, Dan Pollard, David F. Jones, Nicholas Velazco, Voltaire A. García Rodríguez, Omaira Elena Schneider, Matthias Palm, Mathias Warneke, Thorsten De Mazière, Martine TCCON and NDACC XCO measurements: difference, discussion and application |
topic_facet |
Measurements Total Carbon Column Observing Network Carbon monoxide |
description |
Column-averaged dry-air mole fraction of CO (XCO) measurements are obtained from two ground-based Fourier transform infrared (FTIR) spectrometers networks: the Total Carbon Column Observing Network (TCCON) and the Network for the Detection of Atmospheric Composition Change (NDACC). In this study, the differences between the TCCON and NDACC XCO measurements are investigated and discussed based on six NDACC/TCCON sites using data over the period 2007–2017. The NDACC XCO measurements are about 5.5 % larger than the TCCON data at Ny-Ålesund, Bremen, and Izaña (Northern Hemisphere), and about 0.3 % larger than the TCCON data at St Denis, Wollongong and Lauder (Southern Hemisphere). The hemispheric dependence of the bias is mainly attributed to their smoothing errors. The systematic smoothing error of the TCCON XCO data varies in the range between 0.2 % (Bremen) and 7.9 % (Lauder), and the random smoothing error in the range between 2.0 % and 3.6 %. The systematic smoothing error of NDACC data is between 0.1 % and 0.8 %, and the random smoothing error of NDACC data is about 0.3 %. For TCCON data, the smoothing error can be significant in that it is much higher than the reported uncertainty for TCCON XCO. To reduce the influence from the a priori profiles and different vertical sensitivities, the scaled NDACC a priori profiles are used as the common a priori profiles for comparing TCCON and NDACC retrievals. As a result, the biases between TCCON and NDACC XCO measurements become more consistent (5.6–8.5 %) with a mean value of 6.8 % at these sites. To understand the remaining bias, regular AirCore measurements at Orleans and Sodankylä are compared to co-located TCCON measurements. It is found that TCCON XCO measurements are 6.0 ± 1.9 % and 6.9 ± 2.5 % smaller than the AirCore measurements at Orleans and Sodankylä respectively, indicating that the scaling factor of TCCON XCO data should be around 1.0000 instead of 1.0672. Further investigations should be carried out in the TCCON community to determine the correct ... |
format |
Article in Journal/Newspaper |
author |
Zhou, Minqiang Langerock, Bavo Vigouroux, Corinne Sha, Mahesh Kumar Hermans, Christian Metzger, Jean-Marc Chen, Huilin Ramonet, Michel Kivi, Rigel Heikkinen, Pauli Smale, Dan Pollard, David F. Jones, Nicholas Velazco, Voltaire A. García Rodríguez, Omaira Elena Schneider, Matthias Palm, Mathias Warneke, Thorsten De Mazière, Martine |
author_facet |
Zhou, Minqiang Langerock, Bavo Vigouroux, Corinne Sha, Mahesh Kumar Hermans, Christian Metzger, Jean-Marc Chen, Huilin Ramonet, Michel Kivi, Rigel Heikkinen, Pauli Smale, Dan Pollard, David F. Jones, Nicholas Velazco, Voltaire A. García Rodríguez, Omaira Elena Schneider, Matthias Palm, Mathias Warneke, Thorsten De Mazière, Martine |
author_sort |
Zhou, Minqiang |
title |
TCCON and NDACC XCO measurements: difference, discussion and application |
title_short |
TCCON and NDACC XCO measurements: difference, discussion and application |
title_full |
TCCON and NDACC XCO measurements: difference, discussion and application |
title_fullStr |
TCCON and NDACC XCO measurements: difference, discussion and application |
title_full_unstemmed |
TCCON and NDACC XCO measurements: difference, discussion and application |
title_sort |
tccon and ndacc xco measurements: difference, discussion and application |
publisher |
European Geosciences Union |
publishDate |
2019 |
url |
https://hdl.handle.net/20.500.11765/10752 |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) ENVELOPE(-60.667,-60.667,-63.950,-63.950) |
geographic |
Ny-Ålesund Sodankylä Orleans |
geographic_facet |
Ny-Ålesund Sodankylä Orleans |
genre |
Ny Ålesund Ny-Ålesund Sodankylä |
genre_facet |
Ny Ålesund Ny-Ålesund Sodankylä |
op_relation |
https://doi.org/10.5194/amt-12-5979-2019 Atmospheric Measurement Techniques. 2019, 12(11), p. 5979–5995 1867-1381 1867-8548 http://hdl.handle.net/20.500.11765/10752 |
op_rights |
Licencia CC: Reconocimiento CC BY info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11765/1075210.5194/amt-12-5979-2019 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
12 |
container_issue |
11 |
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5979 |
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5995 |
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1802648437863219200 |