Comparisons of the Orbiting Carbon Observatory-2 (OCO-2) XCO2 measurements with TCCON

Autor: Wunch, Debra, Wennberg, Paul, Osterman, Gregory, Fisher, Brendan, Naylor, Bret, Roehl, Coleen, O'Dell, Christopher, Mandrake, Lukas, Viatte, Camille, Kiel, Matthäus, Griffith, David W. T., Deutscher, Nicholas M., Velazco, Voltaire, Notholt, Justus, Warneke, Thorsten, Petri, Christof, De Mazière, Martine, Sha, Mahesh, Sussmann, Ralf, Rettinger, Markus, Pollard, David, Robinson, John, Morino, Isamu, Uchino, Osamu, Hase, Frank, Blumenstock, Thomas, Feist, Dietrich G., Arnold, Sabrina G., Strong, Kimberly, Mendonca, Joseph, Kivi, Rigel, Heikkinen, Paul, Iraci, Laura, Podolske, James, Hillyard, Patrick W., Kawakami, Shuji, Dubey, Manvendra K., Parker, Harrison A., Sepúlveda, Eliezer, Garcìa, Omaira E., Té, Yao, Jeseck, Pascal, Gunson, Michael R., Crisp, David, Eldering, Annmarie
Přispěvatelé: California Institute of Technology (CALTECH), University of Toronto, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Colorado State University [Fort Collins] (CSU), Institut für Meteorologie und Klimaforschung - Atmosphärische Spurengase und Fernerkundung (IMK-ASF), Karlsruher Institut für Technologie (KIT), University of Wollongong [Australia], Centre for Atmospheric Chemistry [Wollongong] (CAC), University of Bremen, Institut für Umweltphysik [Bremen] (IUP), Universität Bremen, Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU), National Institute of Water and Atmospheric Research [Lauder] (NIWA), National Institute for Environmental Studies (NIES), Max Planck Institute for Biogeochemistry (MPI-BGC), Max-Planck-Gesellschaft, Department of Physics [Toronto], Finnish Meteorological Institute (FMI), NASA Ames Research Center (ARC), Bay Area Environmental Research Institute (BAER), Japan Aerospace Exploration Agency [Tsukuba] (JAXA), Los Alamos National Laboratory (LANL), Izaña Atmospheric Research Center (IARC), Agencia Estatal de Meteorología (AEMet), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS-PSL)
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Atmospheric Measurement Techniques
Atmospheric Measurement Techniques, European Geosciences Union, 2017, 10 (6), pp.2209-2238. ⟨10.5194/amt-10-2209-2017⟩
Atmospheric Measurement Techniques, 2017, 10 (6), pp.2209-2238. ⟨10.5194/amt-10-2209-2017⟩
ISSN: 1867-1381
1867-8548
Popis: International audience; NASA's Orbiting Carbon Observatory-2 (OCO-2) has been measuring carbon dioxide column-averaged dry-air mole fraction, XCO2, in the Earth's atmosphere for over 2 years. In this paper, we describe the comparisons between the first major release of the OCO-2 retrieval algorithm (B7r) and XCO2 from OCO-2's primary ground-based validation network: the Total Carbon Column Observing Network (TCCON). The OCO-2 XCO2 retrievals, after filtering and bias correction, agree well when aggregated around and coincident with TCCON data in nadir, glint, and target observation modes, with absolute median differences less than 0.4 ppm and RMS differences less than 1.5 ppm. After bias correction, residual biases remain. These biases appear to depend on latitude, surface properties, and scattering by aerosols. It is thus crucial to continue measurement comparisons with TCCON to monitor and evaluate the OCO-2 XCO2 data quality throughout its mission.
Databáze: OpenAIRE
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