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OCO-2 Data Center

Data Access & Updates

August 12, 2020

The “official” OCO-2 v10r L2 FP, L2 Diagnostic, L2 XCO2 Lite, and SIF Lite products are now posted on the GES DISC for global access: Click Here.

The current products are the reprocessed results of the entire OCO-2 data record, extending across the entire mission from 2014-09-06 to 2020-07-30. These results supersede and should replace the v10r beta products distributed earlier for internal review.

For more details, please click here.

4/21/2020: The ACOS/GOSAT V9r data have been released!

This "ACOS" Level 2 data product contains estimates of the carbon dioxide (CO2) column averaged dry air mole fraction and other environmental variables for all cloud free soundings that converged during for a period extending from April 2009 through January 1, 2020.

The GOSAT team at JAXA produces GOSAT TANSO-FTS Level 1B (L1B) data products for internal use and for distribution to collaborative partners, including NASA. The OCO-2 Project augments these L1B products with additional information and uses them as input to the ACOS Level 2 production process. For the period extending from April 2009 through February 2018, the JAXA GOSAT L1B version 205205 (v205205) products were used as input. The GOSAT L1B v210210 products were used after that. These two L1B products are identical in the near infrared and shortwave infrared bands used to generate the ACOS products. All Level 2 products were generated using the ACOS GOSAT Build 9 algorithm. These are the highest-level products made available by the OCO-2 Project, using TANSO-FTS spectral radiances.

If you are interested in a OCO-2 L4 flux product, please visit:

OCO-2 v10 MIP Flux Maps


On October 10, 2018, OCO-2 released the latest version of the Level 2 (L2) data Product. This version of the L2 Product is release 9.0 (V9) and has been processed based on version 8.0 (V8) of the OCO-2 Level 1 and Level 2 algorithms, but with a new processing that updated the ABP, IDP, Met and XCO2 Lite products. For exact details to the differences between V8 and V9, please see OCO-2 Data Quality Statement: Level 2 Lite File Data Release 9 (V9) (PDF, 1.05 MB)

There are two ways to access OCO-2 data - either from the NASA DAAC or the CO2 portal:

  • Please visit the NASA Data Archive page GES DISC for all OCO-2 data products or
  • Please visit the Nasa Earthdata Search. You will be able to access the Lite files (not full physics), which would be suitable if you are interested in creating imagery or data animations. Documentation will be on the portal.

Helpful documentation to review before your start are at OCO-2 Documents.

If you are interested in our Level 2 products, please go to L2 Products.

These data have been produced by the OCO-2 project, and are provided freely to the public.

OCO-2 L2 Full Physics Code was open sourced and lives on Github- OCO-2 L2 Full Physics Code and the User's Guide for it is available at Users Guide. Please note that Users of the code NEED the ABSCO tables, which are available at ABSCO Tables. To run the L2 code, users will need at least the L1B and Met products.

In order to improve our product and have continued support for this work, we need user feedback and user acknowledgement of data usage. Therefore, we request that when publishing using OCO-2 data, please acknowledge NASA and the OCO-2 project.

  • Include OCO-2 as a keyword to facilitate subsequent searches of bibliographic databases if it is a significant part of the publication
  • Include a bibliographic citation for OCO-2 data. The most relevant citations currently are Wunch et al. [2011a and 2011b], O’Dell et al. [2012], Crisp et al. [2012], and Frankenberg et al. [2014a and 2014b]
  • Include the following acknowledgements: “These data were produced by the OCO-2 project at the Jet Propulsion Laboratory, California Institute of Technology, and obtained from the OCO-2 data archive maintained at the NASA Goddard Earth Science Data and Information Services Center.”
  • We recommend sending courtesy copies of publications to the OCO-2 Project Scientist,, and Deputy Project Scientist,

We are happy to hear your comments and questions – please email

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