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    • NOAA Climate Data Record (CDR) of Solar Spectral Irradiance (SSI), NRLSSI Version 2.1

    Metadata Updated: September 2, 2023

    This Climate Data Record (CDR) contains solar spectral irradiance (SSI) as a function of time and wavelength created with the Naval Research Laboratory model for spectral and total irradiance (Version 2.1). Version 2.1 improves the scientific quality of the earlier Version 2.0 based on new research to achieve high accuracy and improved understanding of uncertainties with the Solar Irradiance CDR. Solar spectral irradiance is the wavelength-dependent energy input to the top of the Earth's atmosphere, at a standard distance of one Astronomical Unit from the Sun. Its units are W per m2 per nm. Also included is the value of total (spectrally integrated) solar irradiance in units W per m2. The dataset was created by Judith Lean (Space Science Division, Naval Research Laboratory), Odele Coddington and Peter Pilewskie (Laboratory for Atmospheric and Space Science, University of Colorado). The daily- and monthly-averaged SSI data range from 1882 to the present, and annual-averaged SSI data begin in 1610. The data file format is netCDF-4 following CF metadata conventions. The dataset is accompanied by algorithm documentation, data flow diagram and source code for the NOAA CDR Program.

    Access & Use Information

    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

    Dates

    Metadata Date August 28, 2023
    Metadata Created Date December 23, 2022
    Metadata Updated Date September 2, 2023
    Reference Date(s) December 1, 2017 (publication)
    Frequency Of Update quarterly

    Metadata Source

    Harvested from ncdc

    Other Data Resources

    Graphic Preview

    Solar Spectral Irradiance (SSI) image.

    Additional Metadata

    Resource Type Dataset
    Metadata Date August 28, 2023
    Metadata Created Date December 23, 2022
    Metadata Updated Date September 2, 2023
    Reference Date(s) December 1, 2017 (publication)
    Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
    Contact Email
    Guid gov.noaa.ncdc:C01542
    Access Constraints Cite as: Odele Coddington, Judith L. Lean, Doug Lindholm, Peter Pilewskie, Martin Snow, and NOAA CDR Program (2017): NOAA Climate Data Record (CDR) of Solar Spectral Irradiance (SSI), NRLSSI Version 2.1. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V53776SW [access date]., Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long 180.0
    Bbox North Lat 90.0
    Bbox South Lat -90.0
    Bbox West Long -180.0
    Coupled Resource
    Frequency Of Update quarterly
    Graphic Preview Description Solar Spectral Irradiance (SSI) image.
    Graphic Preview File https://www.ncei.noaa.gov/pub/data/metadata/images/C01542_SSI.png
    Graphic Preview Type PNG
    Harvest Object Id 549b5561-52cb-460c-99b1-efca05cbe37f
    Harvest Source Id 2cb3ef77-1683-4c2a-9119-dc65e50917c6
    Harvest Source Title ncdc
    Licence For a complete description of the use limiataions for this CDR, see the Algorithm Theoretical Basis Document.
    Lineage The data were produced by the Naval Research Laboratory and the University of Colorado, and are archived at the NOAA National Centers for Environmental Information (NCEI). Version 2 indicates the current version of the Naval Research Laboratory solar variability models, denoted NRLTSI2 and NRLSSI2, for total solar irradiance and solar spectral irradiance, respectively. This version labeling distinguishes the models from their original formulation, NRLTSI and NRLSSI (i.e,. Version 1, or original version). The Solar Irradiance Climate Data Record transitioned to the NOAA CDR program is specific to Version 2.1, although the original formulation of the model has created solar irradiance records used in many previous climate modeling studies, including for the IPCC.
    Metadata Language eng; USA
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
    Progress onGoing
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 1882-01-01

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