La energía solar que incide en la Tierra alcanza en promedio...

La energía solar que incide en la Tierra alcanza en promedio 169 watts por metro cuadrado. La energía irradiada por la superficie terrestre equivale en promedio a 390 watts por metro cuadrado. Al comparar estos números, cabría esperar que el planeta se enfriase rápidamente; $\sin$ embargo, no ocurre asi. ¿Por qué?

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Key Concepts

Energy Balance

This concept refers to the equilibrium between the energy a planet receives and the energy it emits. In the context of Earth, the balance is achieved not by matching the raw figures of solar radiation and terrestrial radiation but through complex processes that regulate temperature, including absorption, reflection, and atmospheric effects.

Radiation Flux

Radiation flux is the measure of the energy transmitted per unit area per unit time, expressed here in watts per square meter. It is a key metric in understanding how much energy is coming in from the Sun versus how much is radiated away from the Earth, and it helps frame the discussion about energy gain and loss at the planetary surface.

Greenhouse Effect

The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat by absorbing and reemitting infrared radiation. This mechanism is crucial in preventing the rapid cooling of the planet by ensuring that a portion of the Earth's outgoing radiation is redirected back towards the surface, maintaining a warmer climate than would be expected based solely on the direct balance of incoming solar energy and outgoing terrestrial energy.

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