SIRS/Nimbus-4 Level 1 Radiance Data V001 (SIRSN4L1) at GES DISC

Metadata Updated: November 5, 2019

SIRSN4L1 is the Nimbus-4 Satellite Infrared Spectrometer (SIRS) Level 1 Radiance Data product. SIRS measured infrared radiation (11 to 36 micrometers) emitted from the earth and its atmosphere in 13 selected spectral intervals in the carbon dioxide and water vapor bands plus one channel in the 11-micrometer atmospheric window. The radiances were used to determine the vertical temperature and water vapor profiles of the atmosphere. The data were recovered from the original 6250 tapes, and are now stored online as daily files in their original proprietary binary format each with about 14 orbits per day.

The Nimbus-4 SIRS used a scan mirror to observe 12.5 deg to either side of the subsatellite track. Spatial coverage is near global from latitude -85 to +85 degrees. The data are available from 08 April 1970 (day of year 98) to 08 April 1971. The principal investigator for the SIRS experiment was Dr. David Q. Wark from the NOAA National Environmental Satellite Data and Information Service.

This product was previously available from the NSSDC with the identifier ESAD-00130 (old ID 70-025A-04A).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date November 5, 2019
Metadata Updated Date November 5, 2019

Metadata Source

Harvested from NASA Data.json

Graphic Preview

Typical data coverage of a Nimbus 4 SIRS Level 1 data file.

Additional Metadata

Resource Type Dataset
Metadata Created Date November 5, 2019
Metadata Updated Date November 5, 2019
Unique Identifier C1622768259-GES_DISC
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Citation NASA/GSFC. 2019-07-02. SIRSN4L1. Version 001. SIRS/Nimbus-4 Level 1 Radiance Data V001. Greenbelt, MD, USA. Archived by National Aeronautics and Space Administration, U.S. Government, Goddard Earth Sciences Data and Information Services Center (GES DISC). Digital Science Data.
Data Presentation Form Digital Science Data
Graphic Preview Description Typical data coverage of a Nimbus 4 SIRS Level 1 data file.
Graphic Preview File
Harvest Object Id 10426705-7afe-4cc1-90d1-9a4cdd632191
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2013-04-29
Homepage URL
Language en-US
Metadata Type geospatial
Data Last Modified 2019-02-04
Program Code 026:001
Release Place Greenbelt, MD, USA
Series Name SIRSN4L1
Source Datajson Identifier True
Source Hash 2fcf47e56f831a45b2f4fa24b94bb06fc31fddaa
Source Schema Version 1.1
Spatial -180.0 -85.0 180.0 85.0
Temporal 1970-04-08T00:00:00Z/1971-04-08T23:59:59Z
Category NIMBUS, geospatial

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