Calibration of TCCON column-averaged CO2: the first aircraft campaign over European TCCON sites

  • The Total Carbon Column Observing Network (TCCON) is a ground-based network of Fourier Transform Spectrometer (FTS) sites around the globe, where the column abundances of CO2, CH4, N2O, CO and O2 are measured. CO2 is constrained with a precision better than 0.25% (1-σ). To achieve a similarly high accuracy, calibration to World Meteorological Organization (WMO) standards is required. This paper introduces the first aircraft calibration campaign of five European TCCON sites and a mobile FTS instrument. A series of WMO standards in-situ profiles were obtained over European TCCON sites via aircraft and compared with retrievals of CO2 column amounts from the TCCON instruments. The results of the campaign show that the FTS measurements are consistently biased 1.1% ± 0.2% low with respect to WMO standards, in agreement with previous TCCON calibration campaigns. The standard a priori profile for the TCCON FTS retrievals is shown to not add a bias. The same calibration factor is generated using aircraft profiles as a priori and with the TCCON standard a priori. With a calibration to WMO standards, the highly precise TCCON CO2 measurements of total column concentrations provide a suitable database for the calibration and validation of nadir-viewing satellites

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Author:Janina Messerschmidt, Marc Christoph Geibel, Thomas Blumenstock, Hilin Chen, Nicholas M. Deutscher, Andreas EngelORCiD, Dietrich G. Feist, Christoph Gerbig, Michael Gisi, Frank Hase, Krzysztof Katrynski, Olaf Kolle, Jost-Valentin Lavrič, Justus Notholt, Mathias Palm, Michael Ramonet, Markus Rettinger, Martina Schmidt, Ralf Sussmann, Geoffrey C. ToonGND, Francois Truong, Thorsten WarnekeGND, Paul O. Wennberg, Debra Wunch, Irene Xueref-Remy
URN:urn:nbn:de:hebis:30:3-234812
URL:http://www.atmos-chem-phys.net/11/10765/2011/
DOI:https://doi.org/doi:10.5194/acp-11-10765-2011
ISSN:1680-7316
Parent Title (English):Atmospheric chemistry and physics
Publisher:European Geosciences Union
Place of publication:Katlenburg-Lindau
Document Type:Article
Language:English
Date of Publication (online):2011/11/02
Date of first Publication:2011/11/02
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2012/01/17
Volume:11
Page Number:13
First Page:10765
Last Page:10777
HeBIS-PPN:301313105
Institutes:Geowissenschaften / Geographie / Geowissenschaften
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 2.0