What is the main source of energy that drives Earth's climate system?

The primary source of energy that drives Earth's climate system is the Sun. Solar energy reaches the Earth and provides the necessary warmth and light that sustain life and shape atmospheric and oceanic circulation patterns. This energy influences weather systems, ocean currents, and climate zones, contributing to various ecological processes and the overall dynamics of the planet.

The Sun's energy is integral to processes such as photosynthesis, which supports plant life, and it affects heat distribution across the Earth's surface, leading to temperature differences that drive wind patterns and ocean currents. Without this solar input, the Earth would be a much colder and less hospitable place.

While geothermal energy and fossil fuels contribute additional energy to the Earth's systems, they do not play a primary role in driving the natural climate processes. The Moon influences tidal patterns but does not significantly impact the overall climate system. Thus, the Sun remains the fundamental driver of the Earth's climate.