formula.expert

Constants library

1 value, each with its units, its uncertainty, and where it came from.

Astronomical 1

Solar Constant (Total Solar Irradiance) measured

S0=1361 W/m2S_0 = 1361\ \text{W/m}^{2}

W/m²Total solar irradiance above the atmosphere at one au, about 1361 W/m² — the input to every climate model and solar panel estimate.