Space weather solar activity

The solar cycle, or the solar magnetic activity cycle, is the main source of periodic solar variation driving variations in space weather. The cycle is observed by counting the frequency and placement of sunspots visible on the sun. The solar cycle was discovered in 1843 by Samuel Heinrich Schwabe. Rudolf Wolf compiled and studied these and other observations, reconstructing the cycle back to 1745, eventually... 

Space Weather Solar-terrestrial interactions, typically within Earth s magnetosphere, that can give rise to geomagnetic activity, radio blackouts, or radiation storms. 

Land/atmospheric interfacial processes which impact climate and biological activity on earth are illustrated in Figure 3. Emissions of carbon dioxide, methane, nitrogen dioxide, and chlorofluorocarbons (CFCs) have been linked to the transmission of solar radiation to the surface of the earth as well as to the transmission of terrestrial radiation to space. Should solar radiation be an internal process or an external driver of the hydrologic cycle, weather, and air surface temperatures Compounds of sulfur and nitrogen are associated with acidic precipitation and damage to vegetation, aquatic life, and physical structures. 

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