Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms
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 two (∼22-year long) Hale cycles have yielded four (∼11-year long) sunspot cycles (numbers 21 through 24). Recent research...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-10-01
|
| Series: | Frontiers in Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fspas.2022.923049/full |
| _version_ | 1817978339079487488 |
|---|---|
| author | Scott W. McIntosh Philip H. Scherrer Leif Svalgaard Robert J. Leamon Robert J. Leamon |
| author_facet | Scott W. McIntosh Philip H. Scherrer Leif Svalgaard Robert J. Leamon Robert J. Leamon |
| author_sort | Scott W. McIntosh |
| collection | DOAJ |
| description | 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 two (∼22-year long) Hale cycles have yielded four (∼11-year long) sunspot cycles (numbers 21 through 24). Recent research has highlighted the persistence of the “Extended Solar Cycle” (ESC) and its connection to the fundamental Hale Cycle–albeit through a host of proxies resulting from image analysis of the solar photosphere, chromosphere and corona. This short manuscript presents the correspondence of the ESC, the surface toroidal magnetic field evolution, and the evolution of the Hale Cycle. As Sunspot Cycle 25 begins, interest in observationally mapping the Hale and Extended cycles could not be higher given potential predictive capability that synoptic scale observations can provide. |
| first_indexed | 2024-04-13T22:28:38Z |
| format | Article |
| id | doaj.art-8820c04712e24af496365b208d87134e |
| institution | Directory Open Access Journal |
| issn | 2296-987X |
| language | English |
| last_indexed | 2024-04-13T22:28:38Z |
| publishDate | 2022-10-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj.art-8820c04712e24af496365b208d87134e2022-12-22T02:27:00ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2022-10-01910.3389/fspas.2022.923049923049Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigmsScott W. McIntosh0Philip H. Scherrer1Leif Svalgaard2Robert J. Leamon3Robert J. Leamon4National Center for Atmospheric Research, Boulder, CO, United StatesHansen Experimental Physics Laboratory, Stanford University, Stanford, CA, United StatesHansen Experimental Physics Laboratory, Stanford University, Stanford, CA, United StatesGoddard Planetary Heliophysics Institute, University of Maryland–Baltimore County, Baltimore, MD, United StatesNASA Goddard Space Flight Center, Greenbelt, MD, United StatesThrough 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 two (∼22-year long) Hale cycles have yielded four (∼11-year long) sunspot cycles (numbers 21 through 24). Recent research has highlighted the persistence of the “Extended Solar Cycle” (ESC) and its connection to the fundamental Hale Cycle–albeit through a host of proxies resulting from image analysis of the solar photosphere, chromosphere and corona. This short manuscript presents the correspondence of the ESC, the surface toroidal magnetic field evolution, and the evolution of the Hale Cycle. As Sunspot Cycle 25 begins, interest in observationally mapping the Hale and Extended cycles could not be higher given potential predictive capability that synoptic scale observations can provide.https://www.frontiersin.org/articles/10.3389/fspas.2022.923049/fullSunsolar cyclesolar magnetic cycledynamosunspots |
| spellingShingle | Scott W. McIntosh Philip H. Scherrer Leif Svalgaard Robert J. Leamon Robert J. Leamon Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms Frontiers in Astronomy and Space Sciences Sun solar cycle solar magnetic cycle dynamo sunspots |
| title | Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms |
| title_full | Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms |
| title_fullStr | Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms |
| title_full_unstemmed | Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms |
| title_short | Uniting the Sun’s Hale magnetic cycle and “extended solar cycle” paradigms |
| title_sort | uniting the sun s hale magnetic cycle and extended solar cycle paradigms |
| topic | Sun solar cycle solar magnetic cycle dynamo sunspots |
| url | https://www.frontiersin.org/articles/10.3389/fspas.2022.923049/full |
| work_keys_str_mv | AT scottwmcintosh unitingthesunshalemagneticcycleandextendedsolarcycleparadigms AT philiphscherrer unitingthesunshalemagneticcycleandextendedsolarcycleparadigms AT leifsvalgaard unitingthesunshalemagneticcycleandextendedsolarcycleparadigms AT robertjleamon unitingthesunshalemagneticcycleandextendedsolarcycleparadigms AT robertjleamon unitingthesunshalemagneticcycleandextendedsolarcycleparadigms |