Solar luminosity refers to the total amount of energy that the Sun emits or gives off. It is a measure of how bright and powerful the Sun is, and it plays a crucial role in sustaining life on Earth by providing heat and light. Full definition
is inconsistent with rising GHG levels but entirely consistent with the gradual decline in the bicentennial component of solar luminosity since just prior to 1990 (joannenova.com.au)
«Enhanced CO2 Greenhouse to Compensate for Reduced Solar Luminosity on Early Earth.» (history.aip.org)
This is inconsistent with rising GHG levels but entirely consistent with the gradual decline in the bicentennial component of solar luminosity since just prior to 1990: - (joannenova.com.au)