there is no single continuous satellite measurement of total solar irradiance (tsi).
there is no single continuous satellite measurement of total solar irradiance (tsi).
sunlight:59
total solar irradiance (tsi) – the amount of solar radiation received at the top of earth's atmosphere – has been measured since 1978 by a series of overlapping nasa and esa satellite experiments to be 1.365 kilo⁠watts per square meter (kw/m²).