OCO-2 Level 0 spacecraft ephemerides, Retrospective Processing V10r (OCO2_Eph) at GES DISC

Version 10r is the current version of the data set. Older versions will no longer be available and are superseded by Version 10r.

Version 8r is the current version of the data set. Version 7r has been superseded by Version 8r. The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere. The OCO-2 project uses the LEOStar-2 spacecraft that carries a single instrument. It incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and in molecular oxygen (O2) A-Band at 0.76 micrometers . Each band has 1016 spectral elements.This product contains the position and velocity of the spacecraft for each orbit. It is generated using the following input data:+ APID 20 telemetry+ Orbit Boundary File.It is essential in generating the Geolocations of the science data.This is the retrospective processing where the calibration data is estimated from the full timeseries of data (before, during, and after the measurements), and is expected to be of slightly higher quality.

Data and Resources

Additional Info

Field Value
Maintainer JENNIFER WEI, PH. D
Last Updated July 17, 2025, 16:20 (UTC)
Created March 31, 2025, 21:14 (UTC)
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation OCO-2 Science Team/Michael Gunson, Annmarie Eldering. 2019-07-01. OCO2_Eph. Version 10r. OCO-2 Level 0 spacecraft ephemerides, Retrospective Processing V10r. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). https://disc.gsfc.nasa.gov/datacollection/OCO2_Eph_10r.html. Digital Science Data.
creator OCO-2 Science Team/Michael Gunson, Annmarie Eldering
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/OCO2_Eph_8r.jpeg
harvest_object_id 97068f97-14f4-4c9e-9f72-a6a19f24a951
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C1685783856-GES_DISC
issued 2019-06-27
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1685783856-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2017-06-17
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name OCO2_Eph
source_datajson_identifier true
source_hash 73dc313574384cc2501572a5aace47b38bc51f79cbff2a54c23eae6701e7fdc1
source_schema_version 1.1
spatial -180.0 -90.0 180.0 90.0
temporal 2014-07-02T00:00:00Z/2022-01-17T00:00:00Z
theme {OCO-2,geospatial}