Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 16, issue 1
Articles | Volume 16, issue 1
https://doi.org/10.5194/amt-16-109-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-16-109-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 1
Research article
 | 
12 Jan 2023
Research article |  | 12 Jan 2023

Exploring bias in the OCO-3 snapshot area mapping mode via geometry, surface, and aerosol effects

Emily Bell, Christopher W. O'Dell, Thomas E. Taylor, Aronne Merrelli, Robert R. Nelson, Matthäus Kiel, Annmarie Eldering, Robert Rosenberg, and Brendan Fisher

Data sets

OCO-3 Level 2 bias-corrected XCO2 and other select fields from the full-physics retrieval aggregated as daily files OCO-2/OCO-3 Science Team, A. Chatterjee, and V. Payne https://doi.org/10.5067/970BCC4DHH24

CarbonTracker CT2019B (https://gml.noaa.gov/aftp/products/carbontracker/co2/CT2019B/molefractions/co2_total/) A. Jacobson, K. Schuldt, J. Miller, et al. https://doi.org/10.25925/20201008

NCEP/NCAR Reanalysis 1 NOAA/NCEP https://psl.noaa.gov/data/gridded/data.ncep.reanalysis.html

MCD43A1 MODIS/Terra+Aqua BRDF/Albedo Model Parameters Daily L3 Global - 500m V006 C. Schaaf and Z. Wang https://doi.org/10.5067/MODIS/MCD43A1.006

Model code and software

hcronk/oco_vistool: Initial official release (v1.0.0) H. Cronk, A. Merrelli, and M. Tkachev https://doi.org/10.5281/zenodo.7517017

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Short summary
A small percentage of data from the Orbiting Carbon Observatory-3 (OCO-3) instrument has been shown to have a geometry-related bias in the earliest public data release. This work shows that the bias is due to a complex interplay of aerosols and viewing geometry and is largely mitigated in the latest data version through improved bias correction and quality filtering.
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