OCO-3 Level 1B calibrated, geolocated calibration spectra, Retrospective Processing V11r (OCO3_L1B_Calibration) at GES DISC

Version 11r is the current version of the data set. Older versions will no longer be available and are superseded by Version 11r.

The Orbiting Carbon Observatory -3 (OCO-3) was deployed to the International Space Station in May, 2019. It is technically a single instrument, almost identical to OCO-2.

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-3 incorporates three high-resolution spectrometers that make coincident measurements ofreflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and in molecular oxygen (O2) A-Band at 0.76 micrometers. The three spectrometers have different characteristics and are calibrated independently. Their raw data numbers (DN) are delivered correlated in time to the Level 1B process as Level 1A products. Each band has 1016 spectralelements, although some are masked out in the L2 retrieval.

This L1B product results from calibration mode measurements (e.g., Lunar,Solar, Dark observations), and thus it differs from the OCO3_L1B_Science(L1bSc) product. The differences in the product formats are only in the geolocation information provided. Whereas the L1bSc products report geolocation data for each sounding, calibration products report the directionof the boresight vector.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.

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 February 19, 2025, 08:50 (UTC)
Created February 19, 2025, 08:50 (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
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citation OCO-3 Science Team/Michael Gunson, Annmarie Eldering. 2024-04-01. OCO3_L1B_Calibration. Version 11r. OCO-3 Level 1B calibrated, geolocated calibration spectra, Retrospective Processing V11r. 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/OCO3_L1B_Calibration_11r.html. Digital Science Data.
creator OCO-3 Science Team/Michael Gunson, Annmarie Eldering
data-presentation-form Digital Science Data
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/OCO3.jpeg
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harvest_source_id b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title DNG Legacy Data
identifier C2916548539-GES_DISC
issued 2024-04-01
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C2916548539-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 2024-04-01
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
release-place Greenbelt, MD, USA
resource-type Dataset
series-name OCO3_L1B_Calibration
source_datajson_identifier true
source_hash c24cdfa816b54847c7478612855f34f6b9fc0cda6ce4a24e0a22a2febf09f1aa
source_schema_version 1.1
spatial -180.0 -53.0 180.0 53.0
temporal 2019-08-06T00:00:00Z/2024-10-07T00:00:00Z
theme {OCO-3,geospatial}