OCO-2 Level 1A collated, parsed, science or calibration data V10 (OCO2_L1aIn_Sample) at GES DISC
Version 10 is the current version of the data set. Older versions will no longer be available and are superseded by Version 10.
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. 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 spectral elements, although some are masked out in the L2 retrieval.This product is the input to the Level 1B process. It is depacketized raw data formatted into a standard granularity with calibrated engineering data (for both science and calibration observations), in the Sample Mode of operation.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"026:00"
]
|
| contactPoint |
{
"fn": "ARIF ALBAYRAK",
"@type": "vcard:Contact",
"hasEmail": "mailto:arif.albayrak@nasa.gov"
}
|
| description | Version 10 is the current version of the data set. Older versions will no longer be available and are superseded by Version 10. 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. 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 spectral elements, although some are masked out in the L2 retrieval.This product is the input to the Level 1B process. It is depacketized raw data formatted into a standard granularity with calibrated engineering data (for both science and calibration observations), in the Sample Mode of operation. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "View the primary investigator's documentation for this dataset",
"format": "PDF",
"mediaType": "application/pdf",
"description": "Level 1A Software Interfase Specification.",
"downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/SDOS_SIS_L1aIn.V7.pdf"
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{
"@type": "dcat:Distribution",
"title": "View documentation related to this dataset",
"format": "HTML",
"mediaType": "text/html",
"description": "OCO-2 Data Gaps",
"downloadURL": "https://disc.gsfc.nasa.gov/information/documents?title=OCO+Known+Data+Issues"
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{
"@type": "dcat:Distribution",
"title": "View documentation related to this dataset",
"format": "HTML",
"mediaType": "text/html",
"description": "OCO-2 Documentation",
"downloadURL": "https://disc.gsfc.nasa.gov/information/documents?title=OCO-2+Documents"
},
{
"@type": "dcat:Distribution",
"title": "The dataset's project home page",
"format": "HTML",
"mediaType": "text/html",
"description": "OCO-2 Project Home Page",
"downloadURL": "https://ocov2.jpl.nasa.gov/"
},
{
"@type": "dcat:Distribution",
"title": "View documentation related to this dataset",
"format": "HTML",
"mediaType": "text/html",
"description": "Publications from the Science Team",
"downloadURL": "https://ocov2.jpl.nasa.gov/science/publications/"
},
{
"@type": "dcat:Distribution",
"title": "View this dataset's read me document",
"format": "PDF",
"mediaType": "application/pdf",
"description": "README document.",
"downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/README.OCO2.pdf"
},
{
"@type": "dcat:Distribution",
"title": "View this dataset's how-to documentation",
"format": "HTML",
"mediaType": "text/html",
"description": "Subset recipe using OPeNDAP",
"downloadURL": "https://disc.gsfc.nasa.gov/information/howto?title=How+to+download+a+spatial+and+variable+subset+of+Level+1B+data+using+OPeNDAP"
},
{
"@type": "dcat:Distribution",
"title": "Downloadable software applications",
"format": "HTML",
"mediaType": "text/html",
"description": "This software (NASA NTR-49044) retrieves a set of atmospheric/surface/instrument parameters from a simultaneous fit to spectra from multiple absorption bands. The software uses an iterative, non-linear retrieval technique (optimal estimation). After the retrieval process has converged, the software performs an error analysis. The products of the software include all quantities needed to understand the information content of the measurement, its uncertainty, and its dependence on interfering atmospheric properties.
Jet Propulsion Laboratory, California Institute of Technology.
Copyright 2016 California Institute of Technology.
U.S. Government sponsorship acknowledged.",
"downloadURL": "https://github.com/nasa/RtRetrievalFramework"
},
{
"@type": "dcat:Distribution",
"title": "View this dataset's user's guide",
"format": "PDF",
"mediaType": "application/pdf",
"description": "USER'S GUIDE",
"downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/OCO2_OCO3_B10_DUG.pdf"
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{
"@type": "dcat:Distribution",
"title": "Download this dataset through Earthdata Search",
"format": "HTML",
"mediaType": "text/html",
"description": "Use the Earthdata Search to find and retrieve data sets across multiple data centers.",
"downloadURL": "https://search.earthdata.nasa.gov/search?q=OCO2_L1aIn_Sample"
},
{
"@type": "dcat:Distribution",
"title": "Get a related visualization",
"format": "JPEG",
"mediaType": "image/jpeg",
"downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/OCO2_logo.jpg"
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|
| identifier | C1685783979-GES_DISC |
| issued | 2020-01-17 |
| keyword |
[
"atmosphere",
"atmospheric-chemistry",
"earth-science",
"infrared-wavelengths",
"spectral-engineering"
]
|
| landingPage | https://cmr.earthdata.nasa.gov:443/search/concepts/C1685783979-GES_DISC.html |
| language |
[
"en-US"
]
|
| modified | 2025-07-17 |
| programCode |
[
"026:001"
]
|
| publisher |
{
"name": "NASA/GSFC/SED/ESD/GCDC/GESDISC",
"@type": "org:Organization"
}
|
| spatial | -180.0 -90.0 180.0 90.0 |
| temporal | 2019-11-30T00:00:00Z/2022-01-17T00:00:00Z |
| theme |
[
"OCO-2",
"geospatial"
]
|
| title | OCO-2 Level 1A collated, parsed, science or calibration data V10 (OCO2_L1aIn_Sample) at GES DISC |
