Loading...
Please wait, while we are loading the content...
Similar Documents
Sunspot minimum between solar cycles No 23 and 24. Prediction of solar cycle No 24 magnitude on the base of
| Content Provider | Semantic Scholar |
|---|---|
| Author | Komitov, Boris Duchlev, Peter I. Stoychev, Kancho Dechev, Momchil Ts. Koleva, Kostadinka |
| Copyright Year | 2010 |
| Abstract | The main purpose of this study is the determination of solar minimum date of the new sunspot cycle No 24. It is provided by using of four types of mean daily data values for the period Jan 01. 2006 - Dec 31. 2009: (1) the solar radioindex F10.7; (2) the International sunspot number Ri; (3) the total solar irradiance index (TSI), and (4) the daily number of X-ray flares of classes from "B" to "X" from the soft X-ray GOES satellite channel (0.1 - 0.8 nm). It is found that the mean starting moment of the upward solar activity tendency (the mean solar minimum) is Nov. 06th, 2008. So, the solar cycle No 23 length is estimated to ~12.6 years. A conclusion for a relatively weak general magnitude of solar cycle No 24 is made. By using of relationship based on the "Waldmeier's rule" a near maximal mean yearly sunspot number value of 72 \pm 27 has been determined. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://arxiv.org/pdf/1008.0375v1.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |