Terrestrial weather The amount of energy entering the troposphere and stratosphere from space weather phenomena is trivial compared to the solar insolation in the visible and infrared portions of the solar electromagnetic spectrum. Although some linkage between the 11-year sunspot cycle and the Earth's climate has been claimed.,Variability of the solar cycle length during the past five centuries and the apparent association with terrestrial climate, K. Lassen and E. Friis-Christensen, 57, 8, pp. 835–845, 1995 this has never been verified. For example, the Maunder minimum, a 70-year period almost devoid of sunspots, has often been suggested to be correlated to a cooler climate, but these correlations have disappeared after deeper studies. The suggested link from changes in cosmic-ray flux causing changes in the amount of cloud formationWhat do we really know about the Sun-climate connection?, E. Friis-Christensen and H. Svensmark, Adv. Space Res., 20, 4/5, pp. 913–921, 1997. did not survive scientific tests. Another suggestion, that variations in the extreme ultraviolet (EUV) flux subtly influence existing drivers of the climate and tip the balance between El Niño/La Niña eventsAmplifying the Pacific climate system response to a small 11-year solar cycle forcing, Meehl, G.A.; Arblaster, J.M.; Matthes, K.; Sassi, F.; van Loon, H., Science, 325, 5944, 1114-18, 28 Aug. 2009 collapsed when new research showed this was not possible. As such, a linkage between space weather and the climate has not been demonstrated.
Terrestrial weather The amount of energy entering the troposphere and stratosphere from space weather phenomena is trivial compared to the solar insolation in the visible and infrared portions of the solar electromagnetic spectrum Although some linkage between the 11-year sunspot cycle and the Earth's climate has been claimedVariability of the solar cycle length during the past five centuries and the apparent association with terrestrial climate K Lassen and E Friis-Christensen 57 8 pp 835–845 1995 this has never been verified For example the Maunder minimum a 70-year period almost devoid of sunspots has often been suggested to be correlated to a cooler climate but these correlations have disappeared after deeper studies The suggested link from changes in cosmic-ray flux causing changes in the amount of cloud formationWhat do we really know about the Sun-climate connection E Friis-Christensen and H Svensmark Adv Space Res 20 4/5 pp 913–921 1997 did not survive scientific tests Another suggestion that variations in the extreme ultraviolet (EUV) flux subtly influence existing drivers of the climate and tip the balance between El Niño/La Niña eventsAmplifying the Pacific climate system response to a small 11-year solar cycle forcing Meehl GA; Arblaster JM; Matthes K; Sassi F; van Loon H Science 325 5944 1114-18 28 Aug 2009 collapsed when new research showed this was not possible As such a linkage between space weather and the climate has not been demonstrated