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Solar Irradiance Variability: Modeling the Measurements

Kopp, G.; Lean, J. L.; Marchenko, S. V. +3 more

New models of the Sun's irradiance variability are developed from 15 years of direct observations made by the Solar Radiation and Climate Experiment (SORCE) spacecraft from 2003 to 2017 (inclusive). Multiple linear regression parameterizes the observations in terms of facular brightening and sunspot darkening, which are the primary sources of sola…