The Solar Cycle, Earth’s Temperature And Climate Response

The Earth’s upper atmospheric winds are tied to the solar cycle. Above the equatorial zone the air temperature and wind direction change with a period of about 24 to 36 months, a variation called the Quasi-Biennial Oscillation (QBO). Karin Labitzke (Free University, Berlin) and Harry van Loon (National Center for Atmospheric Research) found that when these high-altitude winds come from the west, the upper-air temperature follows the 11-year solar cycle; when the QBO winds are from the east, the stratospheric temperatures anticorrelate with the cycle. Finally, Brian Tinsley. (University of Texas, Richardson) and his colleagues see a link between changes in solar magnetism and changes in the global electrical circuit of the Earth, with influences on cloud properties and thunderstorms, for example.

Cycle Of The Sun’s Magnetism

The observational record of sunspots begins around 1610 with systematic telescopic counts by Galileo, Christoph Scheiner, and others. In 1843, after 17 years of observing the Sun for evidence of the fictitious planet Vulcan, Samuel H. Schwabe noted roughly a 10-year periodicity in the number of sunspot groups and in the strings of days when no sunspots were seen. Then in 1908 George Ellery Hale at Mount Wilson Observatory found sunspots to have strong magnetic fields of up to several thousand gauss. Thus the historical

December 31, 2015 | Leave a Comment  Tags: ,