OCO-2 Level 1A collated, parsed, calibration data, Retrospective Processing V10r (OCO2_L1aIn_Pixel) at GES DISC

Description

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 Older versions will no longer be available and are superseded by Version 10r.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 Version 7r has been superseded by Version 8r.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. 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.

Resources

Name Format Description Link
21 Access the data via HTTP. https://oco2.gesdisc.eosdis.nasa.gov/data/OCO2_DATA/OCO2_L1aIn_Pixel.10r/
21 OCO-2 Documentation https://disc.gsfc.nasa.gov/information/documents?title=OCO-2+Documents
21 OCO-2 Project Home Page https://ocov2.jpl.nasa.gov/
21 OCO-2 Data Gaps https://disc.gsfc.nasa.gov/information/documents?title=OCO+Known+Data+Issues
22 OCO2_L1aIn_Pixel_8r.jpeg https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/OCO2_L1aIn_Pixel_8r.jpeg
21 Publications from the Science Team https://ocov2.jpl.nasa.gov/science/publications/
33 USER'S GUIDE https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/OCO2_OCO3_B10_DUG.pdf
21 Access the dataset landing page from the GES DISC website. https://disc.gsfc.nasa.gov/datacollection/OCO2_L1aIn_Pixel_10r.html
21 Subset recipe using OPeNDAP https://disc.gsfc.nasa.gov/information/howto?title=How+to+download+a+spatial+and+variable+subset+of+Level+1B+data+using+OPeNDAP
21 Access the data via the OPeNDAP protocol. https://oco2.gesdisc.eosdis.nasa.gov/opendap/OCO2_L1aIn_Pixel.10r/contents.html
33 Level 1A Software Interfase Specification. https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/SDOS_SIS_L1aIn.V7.pdf
33 README document. https://docserver.gesdisc.eosdis.nasa.gov/public/project/OCO/README.OCO2.pdf
21 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. https://github.com/nasa/RtRetrievalFramework
21 Use the Earthdata Search to find and retrieve data sets across multiple data centers. https://search.earthdata.nasa.gov/search?q=OCO2_L1aIn_Pixel

Tags

  • infrared-wavelengths
  • atmosphere
  • atmospheric-chemistry
  • spectral-engineering
  • earth-science

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