Atmospheric factors that determine the radiation received at the Earth’s surface include the amount of the atmosphere, its physical structure, and its composition. The amount of the atmosphere affects the amount of radiation that is blocked from entering the Earth’s surface, while its physical structure affects the scattering and absorption of radiation along its path. The composition of the atmosphere also affects the amount of absorption and scattering of radiation, with components such as water vapor, dust, and ozone having different influences on the radiation’s path. Additionally, the angle of the sun’s radiation, the amount of reflection from the Earth’s surface, and the amount of cloudiness, can also affect how much radiation reaches the surface.