Comparing v11.2 OCO‐2 and v11 OCO‐3 XCO2 Retrievals With Ground‐Based COCCON Measurements

Das, Saswati; Sha, Mahesh Kumar; Dubravica, Darko; Taylor, Thomas E.; Kiel, Matthäus; Laughner, Joshua L.; Osterman, Gregory B.; O'Dell, Christopher W.; Fisher, Brendan; Nelson, Robert R.; Alberti, Carlos; Baier, Bianca C.; Balis, Dimitrios; Bösch, Hartmut; Butz, Andre; Cai, Zhaonan; Chen, Jia; Chevallier, Frédéric; Dandocsi, Alexandru; Deutscher, Nicholas M.; Dubey, Manvendra K.; Feist, Dietrich G.; Feld, Lena; Franklin, Jonathan E.; Frey, Matthias M.; Garcia, Omaira; Gottlieb, Elaine; Gribanov, Konstantin; Griffith, David W. T.; Grutter, Michel; Hase, Frank; Hernández, Eliezer S.; Humpage, Neil; Iraci, Laura T.; Jacobs, Nicole; Jeong, Sujong; Jeseck, Pascal; Karppinen, Tomi; Kivi, Rigel; Lopez, Morgan; Luther, Andreas; Makarova, Maria; Makowski, Moritz; Mcgee, Erin; Mermigkas, Marios; Morino, Isamu; Notholt, Justus; Ohyama, Hirofumi; Panou, Thomas; Park, Hayoung; Parker, Robert; Pollard, David F.; Rettinger, Markus; Roche, Sébastien; Roehl, Coleen M.; Rousogenous, Constantina; Shiomi, Kei; Simpson, William R.; Stremme, Wolfgang; Strong, Kimberly; Sussmann, Ralf; Taquet, Noemie L.; Té, Yao; Topaloglou, Chrysanthi; Toon, Geoffrey; Tu, Qiansi; Vrekoussis, Mihalis; Wang, Pucai; Warneke, Thorsten; Wofsy, Steven C.; Wunch, Debra; Zhou, Minqiang; Spicer, Elizabeth; Eldering, Annmarie; Kulawik, Susan; Chatterjee, Abhishek; Payne, Vivienne H.

doi:10.1029/2025ea004646

i

Comparing v11.2 OCO‐2 and v11 OCO‐3 XCO2 Retrievals With Ground‐Based COCCON Measurements

2026
By Das, Saswati ; Sha, Mahesh Kumar ; Dubravica, Darko
Source Earth and Space Science, 13(6)

Details

Journal Title:

Earth and Space Science
Personal Author:

Das, Saswati ; Sha, Mahesh Kumar ; Dubravica, Darko ; Taylor, Thomas E. ; Kiel, Matthäus ; Laughner, Joshua L. ; Osterman, Gregory B. ; O'Dell, Christopher W. ; Fisher, Brendan ; Nelson, Robert R. ; Alberti, Carlos ; Baier, Bianca C. ; Balis, Dimitrios ; Bösch, Hartmut ; Butz, Andre ; Cai, Zhaonan ; Chen, Jia ; Chevallier, Frédéric ; Dandocsi, Alexandru ; Deutscher, Nicholas M. ; Dubey, Manvendra K. ; Feist, Dietrich G. ; Feld, Lena ; Franklin, Jonathan E. ; Frey, Matthias M. ; Garcia, Omaira ; Gottlieb, Elaine ; Gribanov, Konstantin ; Griffith, David W. T. ; Grutter, Michel ; Hase, Frank ; Hernández, Eliezer S. ; Humpage, Neil ; Iraci, Laura T. ; Jacobs, Nicole ; Jeong, Sujong ; Jeseck, Pascal ; Karppinen, Tomi ; Kivi, Rigel ; Lopez, Morgan ; Luther, Andreas ; Makarova, Maria ; Makowski, Moritz ; Mcgee, Erin ; Mermigkas, Marios ; Morino, Isamu ; Notholt, Justus ; Ohyama, Hirofumi ; Panou, Thomas ; Park, Hayoung ; Parker, Robert ; Pollard, David F. ; Rettinger, Markus ; Roche, Sébastien ; Roehl, Coleen M. ; Rousogenous, Constantina ; Shiomi, Kei ; Simpson, William R. ; Stremme, Wolfgang ; Strong, Kimberly ; Sussmann, Ralf ; Taquet, Noemie L. ; Té, Yao ; Topaloglou, Chrysanthi ; Toon, Geoffrey ; Tu, Qiansi ; Vrekoussis, Mihalis ; Wang, Pucai ; Warneke, Thorsten ; Wofsy, Steven C. ; Wunch, Debra ; Zhou, Minqiang ; Spicer, Elizabeth ; Eldering, Annmarie ; Kulawik, Susan ; Chatterjee, Abhishek ; Payne, Vivienne H.
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIRA (Cooperative Institute for Research in the Atmosphere) ; GML (Global Monitoring Laboratory)
Description:

The Orbiting Carbon Observatory‐2 and ‐3 (collectively termed "OCO‐2/3," hereafter) missions, together, provide precise and accurate global data records that contribute to a better understanding of the variability in atmospheric carbon dioxide (CO 2). The retrieval algorithm used to process the satellite data, Atmospheric Carbon Observations from Space (ACOS), continues to be updated. The latest v11.2 OCO‐2 and v11 OCO‐3 data releases include significant improvements compared to past data versions. The Total Carbon Column Observing Network (TCCON), a network of ground‐based Fourier Transform Spectrometers (FTS), has historically, been the validation data source for OCO‐2/3. The COllaborative Carbon Column Observing Network (COCCON), an emerging network of ground‐based portable Fourier Transform Infrared Spectrometers (EM27/SUN), aids satellite validation efforts by providing observations in geographic locations where there are no TCCON measurements being made. This study provides the first global comparison between the OCO‐2/3 data sets and the COCCON observations. Currently, the COCCON data set, most useful for global analysis, is version 1 (v1), which our analysis shows is typically lower than the satellites by ∼0.50-1.00 ppm, with scatter against OCO‐2/3 roughly similar to TCCON versus OCO‐2/3. This analysis includes comparisons of results from the latest v2.x COCCON data version for the sites with the data available. Comparisons with the v2.x COCCON data version generally show improved comparisons against OCO‐2/3. Our analysis illustrates the ways in which the COCCON data set, used globally, regionally, or in specific locations, can provide insight into the quality of satellite observations of atmospheric CO 2 .
Source:

Earth and Space Science, 13(6)
DOI:

https://doi.org/10.1029/2025ea004646
ISSN:

2333-5084 ; 2333-5084
Format:

pdf
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Download URL:

https://repository.library.noaa.gov/view/noaa/75931/noaa_75931_DS1.pdf
File Type:

[PDF - 6.61 MB]
Collection(s):

Office of Oceanic and Atmospheric Research (OAR) ; NOAA Cooperative Institutes
Main Document Checksum:

urn:sha-512:1b2495dbd981d2f00e55c2c6bdd22885daa4eedfbb61fd2ec16306756e5b927a8d775edda680813def1aee75c2269791a0816d2038144d5d5131d409e77e9760

ON THIS PAGE

Details

Found an issue?

Send us an email at:

noaa.repository@noaa.gov

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

BACK TO TOP