Atmospheric optics is a branch of optics and photonics that studies how light behaves in the Earth’s atmosphere. This can include both understanding naturally occurring effects involving sunlight and the propagation and distortion of electromagnetic signals through air. The study of the optical characteristics of the atmosphere or products of atmospheric processes. The term is usually confined to visible and near visible radiation. But, unlike meteorological optics, it routinely includes temporal and spatial resolutions beyond those discernible with the naked eye.