claim: There is no single continuous satellite measurement of Total Solar Irradiance ( TSI ).
evidence: The Solar Radiation and Climate Experiment / Total Irradiance Measurement ( SORCE / TIM ) TSI values are lower than prior measurements by the Earth Radiometer Budget Experiment ( ERBE ) on the Earth Radiation Budget Satellite ( ERBS ), VIRGO on the Solar Heliospheric Observatory ( SoHO ) and the ACRIM instruments on the Solar Maximum Mission ( SMM ), Upper Atmosphere Research Satellite ( UARS ) and ACRIMSAT.