Climate change refers to long-term alterations in temperature, precipitation, wind patterns, and other aspects of Earth's climate system. While recent climate change is largely driven by human activities, particularly the emission of greenhouse gases from fossil fuel combustion and deforestation, it is important to understand that climate change has natural drivers as well. These natural drivers have been shaping Earth’s climate for millions of years, long before human influence became significant. The primary natural drivers of climate change include solar variability, volcanic activity, oceanic processes, Earth's orbital changes, and internal climate feedback mechanisms. One of the most fundamental natural drivers of climate change is solar variability. The Sun is the primary source of energy for Earth's climate system, and variations in solar radiation can significantly influence global climate patterns. Solar variability refers to the changes in the amount of solar energy reaching the Earth’s atmosphere. These changes are mainly caused by fluctuations in solar output due to sunspot cycles, which typically span approximately 11 years. During periods of high sunspot activity, the Sun emits slightly more energy, which can result in temporary warming of Earth's surface. Conversely, periods of low solar activity can contribute to cooler global temperatures. A famous historical example is the Maunder Minimum (approximately 1645 to 1715), a prolonged period of low sunspot activity that coincided with the "Little Ice Age," when Europe and North America experienced significantly colder conditions. Volcanic activity is another important natural driver of climate change. When a volcano erupts, it releases massive quantities of gases and particles into the atmosphere, including carbon dioxide (CO₂), sulfur dioxide (SO₂), ash, and other aerosols. While the CO₂ released by volcanoes is small compared to human-generated emissions, the sulfur dioxide can have a significant short-term impact. SO₂ reacts in the atmosphere to form sulfate aerosols, which reflect sunlight away from the Earth and cause temporary global cooling. Large volcanic eruptions, such as the eruption of Mount Tambora in 1815, have led to noticeable climate effects. The year following this eruption, 1816, became known as the "Year Without a Summer," with widespread crop failures and cooler temperatures across the Northern Hemisphere. Although volcanic cooling effects are usually temporary (lasting from a few months to a few years), they demonstrate how natural processes can influence global climate on relatively short timescales. Another major natural driver of climate change is oceanic processes, especially phenomena such as the El Niño-Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO), and the Atlantic Multidecadal Oscillation (AMO). ENSO, in particular, consists of periodic fluctuations in ocean temperatures and atmospheric