A straightforward estimation of the maximum sunspot number for cycle 23
oleh: B. Mendoza, B. Mendoza, J. Ramírez
| Format: | Article |
|---|---|
| Diterbitkan: | Copernicus Publications 1999-05-01 |
Deskripsi
Using the annual number of geomagnetically quiet days (<i>aa</i> < 20 γ) for the year <i>after</i> the solar minimum, this precursor method predicts that the maximum sunspot number for cycle 23 will be 140 ± 32, indicating that cycle 23 will be similar to cycles 21 and 22.<br><br><b>Key words.</b> Solar physics · astrophysics and astronomy (magnetic fields; general)