Atmospheric Measurement Techniques (Jun 2017)
Comparisons of the Orbiting Carbon Observatory-2 (OCO-2) <i>X</i><sub>CO<sub>2</sub></sub> measurements with TCCON
- D. Wunch,
- D. Wunch,
- P. O. Wennberg,
- G. Osterman,
- G. Osterman,
- B. Fisher,
- B. Fisher,
- B. Naylor,
- B. Naylor,
- C. M. Roehl,
- C. O'Dell,
- L. Mandrake,
- L. Mandrake,
- C. Viatte,
- M. Kiel,
- M. Kiel,
- D. W. T. Griffith,
- N. M. Deutscher,
- N. M. Deutscher,
- V. A. Velazco,
- J. Notholt,
- T. Warneke,
- C. Petri,
- M. De Maziere,
- M. K. Sha,
- R. Sussmann,
- M. Rettinger,
- D. Pollard,
- J. Robinson,
- I. Morino,
- O. Uchino,
- F. Hase,
- T. Blumenstock,
- D. G. Feist,
- S. G. Arnold,
- K. Strong,
- J. Mendonca,
- R. Kivi,
- P. Heikkinen,
- L. Iraci,
- J. Podolske,
- P. W. Hillyard,
- P. W. Hillyard,
- S. Kawakami,
- M. K. Dubey,
- H. A. Parker,
- E. Sepulveda,
- O. E. García,
- Y. Te,
- P. Jeseck,
- M. R. Gunson,
- M. R. Gunson,
- D. Crisp,
- D. Crisp,
- A. Eldering,
- A. Eldering
Affiliations
- D. Wunch
- California Institute of Technology, Pasadena, CA, USA
- D. Wunch
- University of Toronto, Toronto, Canada
- P. O. Wennberg
- California Institute of Technology, Pasadena, CA, USA
- G. Osterman
- Jet Propulsion Laboratory, Pasadena, CA, USA
- G. Osterman
- California Institute of Technology, Pasadena, CA, USA
- B. Fisher
- Jet Propulsion Laboratory, Pasadena, CA, USA
- B. Fisher
- California Institute of Technology, Pasadena, CA, USA
- B. Naylor
- Jet Propulsion Laboratory, Pasadena, CA, USA
- B. Naylor
- California Institute of Technology, Pasadena, CA, USA
- C. M. Roehl
- California Institute of Technology, Pasadena, CA, USA
- C. O'Dell
- Colorado State University, Fort Collins, CO, USA
- L. Mandrake
- Jet Propulsion Laboratory, Pasadena, CA, USA
- L. Mandrake
- California Institute of Technology, Pasadena, CA, USA
- C. Viatte
- California Institute of Technology, Pasadena, CA, USA
- M. Kiel
- California Institute of Technology, Pasadena, CA, USA
- M. Kiel
- Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-ASF), Karlsruhe, Germany
- D. W. T. Griffith
- University of Wollongong, Wollongong, Australia
- N. M. Deutscher
- University of Wollongong, Wollongong, Australia
- N. M. Deutscher
- University of Bremen, Bremen, Germany
- V. A. Velazco
- University of Wollongong, Wollongong, Australia
- J. Notholt
- University of Bremen, Bremen, Germany
- T. Warneke
- University of Bremen, Bremen, Germany
- C. Petri
- University of Bremen, Bremen, Germany
- M. De Maziere
- Royal Belgian Institute for Space Aeronomy, Brussels, Belgium
- M. K. Sha
- Royal Belgian Institute for Space Aeronomy, Brussels, Belgium
- R. Sussmann
- Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-IFU), Garmisch-Partenkirchen, Germany
- M. Rettinger
- Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-IFU), Garmisch-Partenkirchen, Germany
- D. Pollard
- National Institute of Water and Atmospheric Research, Lauder, New Zealand
- J. Robinson
- National Institute of Water and Atmospheric Research, Lauder, New Zealand
- I. Morino
- National Institute for Environmental Studies (NIES), Tsukuba, Japan
- O. Uchino
- National Institute for Environmental Studies (NIES), Tsukuba, Japan
- F. Hase
- Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-ASF), Karlsruhe, Germany
- T. Blumenstock
- Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-ASF), Karlsruhe, Germany
- D. G. Feist
- Max Planck Institute for Biogeochemistry, Jena, Germany
- S. G. Arnold
- Max Planck Institute for Biogeochemistry, Jena, Germany
- K. Strong
- University of Toronto, Toronto, Canada
- J. Mendonca
- University of Toronto, Toronto, Canada
- R. Kivi
- Finnish Meteorological Institute, Sodankylä, Finland
- P. Heikkinen
- Finnish Meteorological Institute, Sodankylä, Finland
- L. Iraci
- NASA Ames Research Center, Moffett Field, CA, USA
- J. Podolske
- NASA Ames Research Center, Moffett Field, CA, USA
- P. W. Hillyard
- NASA Ames Research Center, Moffett Field, CA, USA
- P. W. Hillyard
- Bay Area Environmental Research Institute, Petaluma, CA, USA
- S. Kawakami
- Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan
- M. K. Dubey
- Los Alamos National Laboratory, Los Alamos, NM, USA
- H. A. Parker
- Los Alamos National Laboratory, Los Alamos, NM, USA
- E. Sepulveda
- Izaña Atmospheric Research Center, Meteorological State Agency of Spain (AEMet), Tenerife, Spain
- O. E. García
- Izaña Atmospheric Research Center, Meteorological State Agency of Spain (AEMet), Tenerife, Spain
- Y. Te
- LERMA-IPSL, Sorbonne Universités, UPMC Univ Paris 06, CNRS, Observatoire de Paris, PSL Research University, 75005 Paris, France
- P. Jeseck
- LERMA-IPSL, Sorbonne Universités, UPMC Univ Paris 06, CNRS, Observatoire de Paris, PSL Research University, 75005 Paris, France
- M. R. Gunson
- Jet Propulsion Laboratory, Pasadena, CA, USA
- M. R. Gunson
- California Institute of Technology, Pasadena, CA, USA
- D. Crisp
- Jet Propulsion Laboratory, Pasadena, CA, USA
- D. Crisp
- California Institute of Technology, Pasadena, CA, USA
- A. Eldering
- Jet Propulsion Laboratory, Pasadena, CA, USA
- A. Eldering
- California Institute of Technology, Pasadena, CA, USA
- DOI
- https://doi.org/10.5194/amt-10-2209-2017
- Journal volume & issue
-
Vol. 10
pp. 2209 – 2238
Abstract
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.
