OCO-2 Level 1B calibrated, geolocated calibration spectra, Retrospective Processing V11r (OCO2_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 Older versions will no longer be available and are superseded by Version 11r.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 is the first NASA missiondesigned to collect space-based measurements of atmospheric carbon dioxidewith the precision, resolution, and coverage needed to characterize theprocesses 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 ofreflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and inmolecular 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 tothe 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 OCO2_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.

Data and Resources

Additional Info

Field Value
Maintainer KRISTAN MORGAN
Last Updated March 31, 2025, 14:58 (UTC)
Created March 31, 2025, 14:58 (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_L1B_Calibration. Version 11r. OCO-2 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/OCO2_L1B_Calibration_11r.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_L1B_Calibration_8r.jpeg
harvest_object_id f886e683-b35b-43ea-8484-47d72d83fdfe
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier C2248663235-GES_DISC
issued 2019-06-27
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C2248663235-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_L1B_Calibration
source_datajson_identifier true
source_hash 4f3d623d17d1305e425f90f6cc8ae220be5f45741e78682d78319e7b85ba6518
source_schema_version 1.1
spatial -180.0 -90.0 180.0 90.0
temporal 2014-09-06T00:00:00Z/2023-03-01T00:00:00Z
theme {OCO-2,geospatial}