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Comparisons of the Orbiting Carbon Observatory-2 (OCO-2) XCO2 measurements with TCCON
Title: Comparisons of the Orbiting Carbon Observatory-2 (OCO-2) XCO2 measurements with TCCON
Authors: Wunch, DebraWennberg, Paul O.Osterman, GregoryFisher, BrendanNaylor, BretRoehl, Coleen M.O'Dell, ChristopherMandrake, LukasViatte, CamilleKiel, MatthaeusGriffith, David W. T.Deutscher, Nicholas MichaelVelazco, Voltaire A.Notholt, JustusWarneke, ThorstenPetri, ChristofDe Mazière, MartineSha, Mahesh KumarSussmann, RalfRettinger, MarkusPollard, David F.Robinson, JohnMorino, IsamuUchino, OsamuHase, FrankBlumenstock, ThomasFeist, Dietrich G.Arnold, Sabrina G.Strong, KimberlyMendonca, JosephKivi, RigelHeikkinen, PauliIraci, LauraPodolske, JamesHillyard, Patrick W.Kawakami, ShujiDubey, Manvendra K.Parker, Harrison A.Sepúlveda Hernández, EliezerGarcía Rodríguez, Omaira Elena ORCID RESEARCHERID Autor AEMETTe, YaoJeseck, PascalGunson, Michael R.Crisp, DavidEldering, Annmarie
Keywords: Orbiting Carbon Observatory-2; Total Carbon Column Observing Network; Aerosol scattering
Issue Date: 2017
Publisher: European Geosciences Union
Citation: Atmospheric Measurement Techniques. 2018, 10(6), p. 2209–2238
Publisher version:
Abstract: NASA’s Orbiting Carbon Observatory-2 (OCO-2) has been measuring carbon dioxide column-averaged dryair 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.
ISSN: 1867-1381
Appears in Collections:Artículos científicos 2015-2018

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