The primary source of energy for the Earth’s climate system is the sun. Solar radiation drives most of Earth’s weather and climate patterns by heating the atmosphere, land, and oceans. This energy influences energy exchanges through processes like evaporation, condensation, and the greenhouse effect. The sun’s energy is absorbed and redistributed by various components of the Earth system, impacting ecosystems, ocean currents, and atmospheric conditions. Understanding solar energy's role is vital for predicting climate changes and managing natural resources sustainably.