The solar altitude (height of the sun) determines the Sunīs location on its
apparent path
around the Earth. It is described in form of polar coordinates by the angle to the horizon h (0° - 90°)
and the azimuth angle az (0° - 360°).
The solar altitude determines the angle of incidence of the sunlight, its intensity and by that the temperature.
The smaller the angle, the smaller the area where a certain number of sun rays are concentrated, the stronger the intensity
and the higher the temperature.
The angle decreases from the equator to the poles and from the summer to the winter
solstice and by that the temperature.
During a solar day, the solar altitude becomes maximum at noon ((time at sunrise - time at sunset)/2).
For any location on Earth, the solar altitude can be visualized in a
polar diagram.
