Solar Observations in Ancient China and Solar Variability

Details Solar Observations in Ancient China and Solar Variability Solar Observations in Ancient China and Solar Variability

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990rspta.330..513z&link_type=abstract

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 330, Issue 1615,

Physics

7

Scientific paper

In this paper I review both the history of solar observations in ancient China and recent researches on solar variability. The paper consists of three parts. In the first part I describe Sun worship and the early observations of solar phenomena. In the second part I concentrate on sunspot observations and improving the catalogue of naked-eye sunspot records. In the third part I discuss long-term variations of solar activity by using historical sunspot records over 2000 years. The 210-year cycle, which has the largest significance in the power spectrum, may have an important influence on the forecasting of the next cycle (no. 22).

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