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Deciphering Solar Magnetic Activity: Some (Unpopular) Thoughts On the Coupling of the Sun's "Weather" and "Climate"
Scott W. McIntosh, Robert J. Leamon
The Sun exhibits episodic surges of magnetic activity across a range of temporal and spatial scales, the most prominent of which is the 11-ish year modulation of sunspot production…
Uniting The Sun's Hale Magnetic Cycle and `Extended Solar Cycle' Paradigms
Scott W. McIntosh, Phillip H. Scherrer, Leif Svalgaard +1
Through meticulous daily observation of the Sun's large-scale magnetic field the Wilcox Solar Observatory (WSO) has catalogued two magnetic (Hale) cycles of solar activity. Those t…
Deciphering Solar Magnetic Activity: The (Solar) Hale Cycle Terminator of 2021
Scott W McIntosh, Robert J. Leamon, R. Egeland
We previously identified an event in the solar timeline that appeared to play a role in how Sunspot Cycle 23 (SC23) transitioned into Sunspot Cycle 24 (SC24). The timeframe for thi…
The Sun's magnetic (Hale) cycle and 27 day recurrences in the geomagnetic index
S. C. Chapman, S. W. McIntosh, R. J. Leamon +1
We construct a new solar cycle phase clock which maps each of the last 18 solar cycles onto a single normalized epoch for the approximately 22 year Hale (magnetic polarity) cycle,…
Deciphering Solar Magnetic Activity: 140 Years Of The `Extended Solar Cycle' -- Mapping the Hale Cycle
Scott W. McIntosh, Robert J. Leamon, Ricky Egeland +6
We investigate the occurrence of the "extended solar cycle" (ESC) as it occurs in a host observational data spanning 140 years. Investigating coronal, chromospheric, photospheric a…
Overlapping Magnetic Activity Cycles and the Sunspot Number: Forecasting Sunspot Cycle 25 Amplitude
Scott W. McIntosh, Sandra C. Chapman, Robert J. Leamon +2
The Sun exhibits a well-observed modulation in the number of spots on its disk over a period of about 11 years. From the dawn of modern observational astronomy sunspots have presen…