SAMS/Nimbus-7 Level 1 Radiance Data from CD-ROM V001 (SAMSN7L1RAD_CDROM) at GES DISC

SAMSN7L1RAD_CDROM is the gridded Nimbus-7 Stratospheric and Mesospheric Sounder (SAMS) Level 1 Radiance Data Product. The radiances were selected to derive gas concentrations at the wavelength bands 15 (CO2), 25-100 (H2O) 4-5 (CO and NO), and 7.7 (N2O and CH4) microns in the stratosphere and mesosphere, with a resolution of 100 km in the horizontal by 10 km in the vertical at the limb. This product contains radiances in a daily 2.5 degree latitude x 10 degree longitude grid format, gridded temperature profiles at 100, 30, 10, 3, 1, 0.3, 0.1, 0.03, 0.01 and 0.003 hPa, as well as the calibration, apriori and reformatted copies of the original tapes. The data for this product are available from 22 October 1978 through June 9 1983, with a few additional raw radiances to 16 April 1984. The principal investigators for the SAMS experiment were Prof. John T. Houghton and Dr. Fredric W. Taylor from Oxford University.

This product was created by the Oxford University's Atmospheric, Oceanic and Planetary Physics (AOPP) group. The data are stored on a set of 53 CD-ROMs in ASCII files of hexadecimal characters, and are available in gzipped Unix tar archive files. The first CD-ROM contains the a-priori temperature profile, monthly mean retrieved temperature profile, pre-launch calibration, housekeeping and instrument subsystem status files. CD-ROMs 2-5 contain the gridded temperature data. CD-ROMs 6-22 contain the radiances from the C-series and G-series tapes, and CD-ROMs 34-53 contain the raw radiance values from the R-series tape. The byte-ordering in the data files follows the DEC convention for 16-bit integers of less significant byte first. Normal 2's complement integer storage is assumed.

Data and Resources

Additional Info

Field Value
Maintainer JAMES JOHNSON
Last Updated February 19, 2025, 03:07 (UTC)
Created February 19, 2025, 03:07 (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 Oxford University AOPP. 2017-10-31. SAMSN7L1RAD_CDROM. Version 001. SAMS/Nimbus-7 Level 1 Radiance Data from CD-ROM V001. 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/SAMSN7L1RAD_CDROM_001.html. Digital Science Data.
creator Oxford University AOPP
data-presentation-form Digital Science Data
graphic-preview-description Nimbus-7 SAMS zonal mean temperature cross section for 6 November 1978.
graphic-preview-file https://docserver.gesdisc.eosdis.nasa.gov/public/project/Nimbus/images/N7SAMS_sample.png
harvest_object_id 428dd45c-63ee-4ad0-9d93-85a1d4d67143
harvest_source_id b37e5849-07d2-41cd-8bb6-c6e83fc98f2d
harvest_source_title DNG Legacy Data
identifier C1432636975-GES_DISC
issued 1998-04-20
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1432636975-GES_DISC.html
language {en-US}
metadata_type geospatial
modified 1998-04-20
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GCDC/GESDISC
references {https://doi.org/10.1098/rsta.1980.0166}
release-place Greenbelt, MD, USA
resource-type Dataset
series-name SAMSN7L1RAD_CDROM
source_datajson_identifier true
source_hash 368240fe299f2cfb18d48f56577b3751827202ff19a54b63373e1eabc3ccf40d
source_schema_version 1.1
spatial -180.0 -50.0 180.0 67.5
temporal 1978-10-22T00:00:00Z/1984-04-16T23:59:59.999Z
theme {Nimbus,geospatial}