OCO-2 Level 1A collated, parsed, calibration data, Retrospective Processing V8r (OCO2_L1aIn_Pixel) at GES DISC

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 Version 7r has been superseded by Version 8r.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. 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 Single-pixel Mode of operation.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

Field Value
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
identifier C1412974293-GES_DISC
issued 2017-06-17
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1412974293-GES_DISC.html
metadata_type geospatial
modified 2019-12-13
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
resource-type Dataset
source_datajson_identifier true
source_hash 6ea1c18b29f6be2b1b5d3fcb31da28d1c539733d
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
temporal 2014-06-01T00:00:00Z/2019-12-12T00:00:00Z
theme {OCO,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • atmosphere
  • atmospheric-chemistry
  • ckan
  • earth-science
  • geo
  • geoss
  • infrared-wavelengths
  • national
  • national-geospatial-data-asset
  • ngda
  • north-america
  • spectral-engineering
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer ARIF ALBAYRAK
maintainer_email arif.albayrak@nasa.gov
metadata_created 2025-11-22T21:36:44.163384
metadata_modified 2025-11-22T21:36:44.163388
notes 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. 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 Single-pixel Mode of operation.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.
num_resources 13
num_tags 15
title OCO-2 Level 1A collated, parsed, calibration data, Retrospective Processing V8r (OCO2_L1aIn_Pixel) at GES DISC