Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/10752
TCCON and NDACC XCO measurements: difference, discussion and application
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dc.contributor.authorZhou, Minqianges_ES
dc.contributor.authorLangerock, Bavoes_ES
dc.contributor.authorVigouroux, Corinnees_ES
dc.contributor.authorSha, Mahesh K.es_ES
dc.contributor.authorHermans, Christianes_ES
dc.contributor.authorMetzger, Jean-Marces_ES
dc.contributor.authorChen, Huilines_ES
dc.contributor.authorRamonet, M.es_ES
dc.contributor.authorKivi, Rigeles_ES
dc.contributor.authorHeikkinen, Paulies_ES
dc.contributor.authorSmale, Danes_ES
dc.contributor.authorPollard, Davides_ES
dc.contributor.authorJones, Nicholases_ES
dc.contributor.authorVelazco, Voltaire A.es_ES
dc.contributor.authorGarcía Rodríguez, Omaira Elenaes_ES
dc.contributor.authorSchneider, Matthiases_ES
dc.contributor.authorPalm, Mathiases_ES
dc.contributor.authorWarneke, Thorstenes_ES
dc.contributor.authorMazière, Martine dees_ES
dc.date.accessioned2019-08-19T07:22:27Z-
dc.date.available2019-08-19T07:22:27Z-
dc.date.issued2019-
dc.identifier.citationAtmospheric Measurement Techniques. 2019, 12(11), p. 5979–5995es_ES
dc.identifier.issn1867-1381-
dc.identifier.issn1867-8548-
dc.identifier.urihttp://hdl.handle.net/20.500.11765/10752-
dc.description.abstractColumn-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 scaling factor to be applied to the TCCON XCO data. This paper also demonstrates that the smoothing error must be taken into account when comparing FTIR XCO data, and especially TCCON XCO data, with model or satellite data.es_ES
dc.description.sponsorshipThis study is supported by the EU-funded C3S_311a_Lot3 project. The TCCON site at Reunion Island is operated by the Royal Belgian Institute for Space Aeronomy with financial support in 2014, 2015, and 2016, 2017 under the EU project ICOS-Inwire and the ministerial decree for ICOS (FR/35/IC2) and local activities supported by LACy/UMR8105 - Université de La Réunion. The NDACC and TCCON stations Ny-Ålesund, Bremen, Izaña have been supported by the German Bundesministerium für Wirtschaft und Energie (BMWi) 10 via DLR under grants 50EE1711A-B. The Lauder FTIR measurements are core funded by NIWA from New Zealand’s Ministry of Business, Innovation and Employment through the Strategic Science Investment Fund. We thank the HIPPO team for making the aircraft measurements available http://hippo.ucar.edu/.es_ES
dc.language.isoenges_ES
dc.publisherEuropean Geosciences Uniones_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectMeasurementses_ES
dc.subjectTotal Carbon Column Observing Networkes_ES
dc.subjectCarbon monoxidees_ES
dc.titleTCCON and NDACC XCO measurements: difference, discussion and applicationes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://dx.doi.org/10.5194/amt-2019-266es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
Appears in Collections:Artículos científicos 2019-2021


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