The Solar Radiation and Climate Experiment (SORCE) Mission for the NASA Earth Observing System (EOS).- The SORCE Mission.- SORCE Contributions to New Understanding of Global Change and Solar Variability.- An Overview of the Disposition of Solar Radiation in the Lower Atmosphere: Connections to the SORCE Mission and Climate Change.- The SORCE Spacecraft and Operations.- The Total Irradiance Monitor (TIM): Instrument Design.- The Total Irradiance Monitor (TIM): Instrument Calibration.- The Total Irradiance Monitor (TIM): Science Results.- The Spectral Irradiance Monitor: Scientific Requirements, Instrument Design, and Operation Modes.- The Spectral Irradiance Monitor: Measurement Equations and Calibration.- The Spectral Irradiance Monitor (SIM): Early Observations.- Solar-Stellar Irradiance Comparison Experiment II (SOLSTICE II): Instrument Concept and Design.- Solar-Stellar Irradiance Comparison Experiment II (SOLSTICE II): Pre-Launch and On-Orbit Calibrations.- Solar-Stellar Irradiance Comparison Experiment II (SOLSTICE II): Examination of the Solar-Stellar Comparison Technique.- The Mg II Index from SORCE.- XUV Photometer System (XPS): Overview and Calibrations.- XUV Photometer System (XPS): Solar Variations During the SORCE Mission.- The SORCE Science Data System.