Articles of category "Solar variation"

Sunspots are relatively dark areas on the surface of the Sun and are thus cooler than its average surface. The Sun has profound influence on our atmosphere. Changes in sunspot activity or other solar events may affect Earth in ways that are indirect but that can have a significant impact. Energy from the Sun may influence global temperatures indirectly by affecting the formation of clouds.

Solar variations are fluctuations in the amount of energy emitted by the Sun. Small variations have been measured from satellites during recent decades. Solar variation theory is one attempt to account for global warming. Various hypotheses have been proposed to link terrestrial temperature variations to solar variability. The solar variation theory shows that the intensity of sunlight at the Earth's surface actually fell from the 1950s?1990s.