The Solar Constant For A Planet Is S

The solar constant is the amount of solar radiation incidence that is received at a distance of 1 astronomical unit au from the sun.

The solar constant for a planet is s.

The value of the constant is approximately 1 366 kilowatts per square metre. The sun subtends an angle theta at the planet. The surface temperature of the sun is tk. It is presently calculated as being 1 366 w m2.

What is the surface temperature for a planet with no atmosphere with a solar constant of 2 718 w m 2 and an albedo of 0 6. Since the values for the solar constant k s earth s albedo and the stefan boltzmann constant σ are all known it is possible to solve this equation for temperature t. Earth s overall average albedo is about 0 31 or 31. The solar constant is calculated by multiplying the sun s surface irradiance by the square of the radius of the sun over the average distance between the earth and the sun.

Irradiance is sometimes referred to as flux and is a measurement of electromagnetic energy from the sun. The solar system is the gravitationally bound system of the sun and the objects that orbit it either directly or indirectly. Solar constant the total radiation energy received from the sun per unit of time per unit of area on a theoretical surface perpendicular to the sun s rays and at earth s mean distance from the sun. The solar constant includes all types of solar radiation other than neutrinos not just the visible light.

Using a little more algebra we can write the expression above as. It is most accurately measured from satelli. It is most accurately measured from satellites where atmospheric effects are absent. Due to the fact that the earth rotates around the sun and it s distance depends on the time of year the actual direct solar incidence that earth receives varies.

The solar constant for a planet is s. It is measured on a surface perpendicular to the rays one astronomical unit au from the sun roughly the distance from the sun to the earth.