|
|
Post by missouriboy on Nov 30, 2023 19:54:43 GMT
Monthly hemispheric sunspot numbers are only published since 1992. Note that Cycle 23 was fairly balanced across its range ... with southern hemisphere slightly higher in the 2nd half. Weaker Cycle 24 showed northern hemisphere dominance in parts of the first half ... and southern hemisphere dominance in parts of the second half. The second seems to coincide with the dramatic drop in the south polar field (chart 3). So far, Cycle 25 seems fairly balanced between hemispheres. In a year or so, we should know if hemispheric strength in SC25 changes.   |
|
|
|
Post by missouriboy on Dec 8, 2023 21:59:38 GMT
In Preparation for the second half of SC25.
Recognizing that no two solar cycles are exactly the same, I have been banging on about the visual similarities between cycles 12-13 and 24-25. Two weak cycle progressions: the first at the beginning of the Centennial Minimum, 145 years and 13 cycles ago. Their sunspot magnitudes, shape and progression are very similar. Both SC12 and SC24 were double-peaked. SC13 had a single peak. SC25 ‘may’ have a single peak. We will see in the next year or two. Acid has his bet in on a single peak.
Geomagnetic activity for SC24 and 25 appear to be weaker than SC12 and 13, particularly in the first half. The progression is similar, but staggered. SC12 and SC24 are still double-peaked, but SC24’s first peak is lower. SC13 still shows one peak, but it is offset toward the cycle start. So far. SC25 also shows this offset. NOTE on Chart 5 that the longer trends for Geomagnetic Activity during SC24 & SC25 are much lower than for SC12 & SC13.
   |
|
|
|
Post by acidohm on Dec 9, 2023 19:37:21 GMT
Nice summary MoBoy. The similarity with 24 and 12 is striking!!! Nice association with a dozen too.... I'd just draw attention to cycle 24  And 25  Whereas N&S hemisphere rose similarly initially, the southern hemisphere is going of the boil. I don't expect it'll recover as its spots are very equatorial, total ssn will rely increasingly on just the NH, I think solar peak was July. If I'm wrong, I have maybe 3 more solar cycles to hone my craft 😉 |
|
|
|
Post by missouriboy on Dec 10, 2023 0:22:52 GMT
Exciting times ahead. Rocketship SC25 seems to have fizzled dramatically. La Ninas on the backside of SC25 could approach the intensity of those on the tail of SC20. The winters of the mid-late 1970s are well-remembered here.
|
|
|
|
Post by walnut on Dec 10, 2023 1:43:04 GMT
Exciting times ahead. Rocketship SC25 seems to have fizzled dramatically. La Ninas on the backside of SC25 could approach the intensity of those on the tail of SC20. The winters of the mid-late 1970s are well-remembered here. When our NEOK waterways and lakes used to freeze over every year. |
|
|
|
Post by missouriboy on Dec 10, 2023 22:29:26 GMT
Exciting times ahead. Rocketship SC25 seems to have fizzled dramatically. La Ninas on the backside of SC25 could approach the intensity of those on the tail of SC20. The winters of the mid-late 1970s are well-remembered here. When our NEOK waterways and lakes used to freeze over every year. Not to mention Solar Cycles 12 & 13 ... with 1899 when the Mississippi River froze over above New Orleans.
And there are more ...
|
|
|
|
Post by missouriboy on Dec 11, 2023 0:31:27 GMT
I added another AP Chart to my previous post (5 up). NOTE on Chart 5 that the longer trends for Geomagnetic Activity during SC24 & SC25 are much lower than for SC12 & SC13.
|
|
|
|
Post by glennkoks on Dec 11, 2023 21:25:13 GMT
Looks more like the River Thames in London than Buffalo Bayou in Houston, Texas circa 1895 during that solar cycle...
/photo/1?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1359710959804305411%7Ctwgr%5Ec9489053ea96c7c63d14d857bcee6b3dec01dc31%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fwww.chron.com%2Fweather%2Farticle%2Fhouston-record-snow-1895-15952020.php
|
|
|
|
Post by missouriboy on Dec 13, 2023 23:26:17 GMT
The Solar - Pacific Ocean-Atmospheric Interface - Solar Cycles 22, 23, 24 & 25
Strong tradewinds suppress Nino to the negative (La Nina) phase and vice versa. Nino temperatures rise across the active face of the solar cycle.  |
|
|
|
Post by code on Dec 15, 2023 1:46:17 GMT
Exciting times ahead. Rocketship SC25 seems to have fizzled dramatically. La Ninas on the backside of SC25 could approach the intensity of those on the tail of SC20. The winters of the mid-late 1970s are well-remembered here. Oh please Santa |
|
|
|
Post by missouriboy on Dec 15, 2023 2:02:32 GMT
Exciting times ahead. Rocketship SC25 seems to have fizzled dramatically. La Ninas on the backside of SC25 could approach the intensity of those on the tail of SC20. The winters of the mid-late 1970s are well-remembered here. Oh please Santa Europe is just a carbon credit away.  |
|
|
|
Post by acidohm on Dec 15, 2023 5:44:08 GMT
|
|
|
|
Post by blustnmtn on Dec 16, 2023 11:38:21 GMT
|
|
|
|
Post by Sigurdur on Dec 16, 2023 14:31:31 GMT
|
|
|
|
Post by Sigurdur on Dec 16, 2023 23:17:24 GMT
|
|
