Why is the Arctic colder than the equator?

The Arctic is colder than the equator primarily due to the angle at which the Earth receives solar radiation. At the equator, the Sun's rays hit the Earth more directly, concentrating the energy over a smaller area. In contrast, the Arctic is at a high latitude, meaning the Sun's rays strike at a much lower angle, spreading the same amount of energy over a larger surface. This results in less intense heating. Additionally, the high reflectivity of snow and ice in the Arctic further reduces the absorption of solar energy. The Earth's axial tilt also causes hemispheres to lean away from the Sun during their respective winters, receiving significantly less direct sunlight.1234