NOAA Climate Data Record (CDR) of NASA NOAA LASP Total Solar Irradiance (NNLTSI), Version 3

This Climate Data Record (CDR) contains total solar irradiance (TSI) as a function of time created with the NASA NOAA Laboratory for Atmospheric and Space Physics (LASP) (NNL) Version 1 model for total, spectral and high-resolution spectral solar irradiance. The CDR Version 3 improves the scientific quality of the earlier version, version 2.1, based on new research from several NASA Solar Irradiance Science Team activities, from improved accuracy, precision and stability of solar irradiance observations made by the TSIS-1 mission, and from operational and improved sources for facular brightening and sunspot darkening proxies. Total solar irradiance is the total, spectrally integrated 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. The dataset was created by Odele Coddington, Judith Lean, and Peter Pilewskie (Laboratory for Atmospheric and Space Science, University of Colorado). The daily- and monthly-averaged TSI data range from 1874 to the present, and annual-averaged TSI 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.