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On the relationship between spotless days and the sunspot cycle: a supplement
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hathaway, David H. Wilson, Robert M. |
| Copyright Year | 2006 |
| Description | This study provides supplemental material to an earlier study concerning the relationship between spotless days and the sunspot cycle. Our previous study, Technical Publication (TP)-2005-213608 determined the timing and size of sunspot minimum and maximum for the new sunspot cycle, relative to the occurrence of the first spotless day during the declining phase of the old sunspot cycle and the last spotless day during the rising portion of the new cycle. Because the number of spotless days (NSD) rapidly increases as the cycle nears sunspot minimum and rapidly decreases thereafter, the size and timing of sunspot minimum and maximum might be more accurately determined using a higher threshold for comparison, rather than using the first and last spotless day occurrences. It is this aspect that is investigated more thoroughly in this TP. |
| File Size | 461773 |
| Page Count | 68 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070018264 |
| Archival Resource Key | ark:/13960/t5hb43g7p |
| Language | English |
| Publisher Date | 2006-08-01 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Research Sunspots Sun Sunspot Cycle Predictions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
