the LONGEST low density stretch yet........ [latitude vs time - each slice is a daily histogram]... the naughty longitude seems to finally be fading.
from the longitude perspective - averaging over 10 degrees centered on the Sun's equator - the reduction that started in May [equating to the small, 5-10SFU] step in f10.7 - looks to finally be close to completing the 360 degree ring.... We watch and wait #Terminator
"f10.7" - the upward step in the monthly minimum (or rotational minimum) is clear. Post-terminator that minimum will be >90 SFU
for those "concerned" about #SunspotCycle25 amplitude - the #terminator taking place right now would yield a decently *above average* #SunspotCycle. The green vertical line shows you where it would sit relative to our fall 2020 initial estimate. [NB method under-predicts big SCs]
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#TerminatorWatch. Why has #SunspotCycle25 taken off.......? Well..... the #Terminator has arrived. In this thread we'll show some of the preliminary observations and discuss the implications for our forecast of #SunspotCycle25 strength.
@leamonrj@rickyegeland Using small features in the Sun's corona [called "EUV BrightPoints"] we trace the progress of the Sun's magnetic #HaleCycle. Hale Cycles overlap, but come to an abrupt end - #terminator - at the Sun's equator. The #terminator causes the next Sunspot Cycle to blossom.
The BrightPoint density for 2021 showed a bald patch of BrightPoints at the Sun's equator that varied a lot over the year - until December 13, 2021. Will show you something cool about the bald patches later. We've been waiting on that big drop.