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Solar Spectral Irradiance

Sample image of NOAA CDR Solar Spectral Irradiance product; displaying a graph depicting Irradiance levels on the left of the graph and atmospheric height every 100 feet across the bottom.

The dataset provides a high quality Climate Data Record (CDR) of total solar irradiance (TSI) and the corresponding solar spectral irradiance (SSI) bands.

Solar spectral irradiance (SSI) 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 m-2 nm-1. The data record is constructed from solar irradiance models that determine the changes with respect to quiet Sun conditions when facular brightening and sunspot darkening features are present on the solar disk, where the magnitude of the changes in irradiance are determined from linear regression of the proxy Mg II index and sunspot area indices against the approximately decade-long solar irradiance measurements of the SOlar Radiation and Climate Experiment (SORCE).

Principal Investigator: Peter Pilewskie, University of Colorado - LASP

Cite dataset when used as a source. See the dataset's DOI landing page for citation details at doi:10.7289/V51J97P6.