The amount of energy coming from the sun to the top of the atmosphere is 1364 w/m² = 393.8 kelvin or 120°C, and not 340 w/m² = 278 kelvin or 4.85°C. Author; Rogelio Perez C Abstract The amount of energy coming from the sun to the earth is measured by the solar constant. Which has a value of 1364 w/m², this energy is the value of radiation emission from the sun for the area of a sphere 4πr², at the distance of an area of a sphere 4πr² from an astronomical unit, as the earth only receives sunlight the area of a circle πr², then 4 parts of that energy are not reaching the earth, then the value of the constant is divided by four (1364 w/m²/4), therefore the amount of energy at the top of the atmosphere is approximately 340 w/m², which is equivalent to a temperature of 278 kelvin or 4.85°C, but this work shows that the value of the solar constant does not change when we measure the energy emitted by the sun, in an area of the solar circle (πr²), between the value of th...