Question

What is the black body temperature of Earth?

Answer 1

1. An ideal body or surface that absorbs all radiant energy falling on it without reflection and radiates at all frequencies with a spectral energy distribution dependent on its absolute temperature is known as black body temperature.
2. A black body is a surface that absorbs all radiant energy falling on it.
3. A black body looks black at room temperature.
4. The temperature of a body's surface (such as a planet's surface, like the Earth) if it were not warmed by its own atmosphere. The Stefan–Boltzmann equation can be used to calculate it.
5. The Earth's black body temperature is $-23°C,$ but the actual surface temperature is around $15°C.$
6. The difference $(38°C)$ is the amount by which the planet is warmed by the natural greenhouse effect caused by the absorption of radiation within its atmosphere.