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0:00 / 4:47•Watch full video

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Animación de la temperatura del aire global en un año

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Animación de la temperatura del aire global en un año

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When sunlight reaches the Earth's surface, some of it is absorbed and some is reflected. The relative amount (ratio) of light that a surface reflects compared to the total sunlight that falls on it is called albedo. Surfaces that reflect a lot of the light falling on them are bright, and they have a high albedo. Surfaces that don't reflect much light are dark, and they have a low albedo. Snow has a high a albedo, and forests have a low albedo.

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Welcome to NASA Earth Observations, where you can browse and download imagery of satellite data from NASAs Earth Observing System. Over 50 different global datasets are represented with daily, weekly, and monthly snapshots, and images are available in a variety of formats.