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  Recalibration of the Sunspot-Number: Status Report

Clette, F., Lefèvre, L., Chatzistergos, T., Hayakawa, H., Carrasco, V. M. S., Arlt, R., et al. (2023). Recalibration of the Sunspot-Number: Status Report. Solar Physics, 298: 44. doi:10.1007/s11207-023-02136-3.

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Clette, F., Autor
Lefèvre, L., Autor
Chatzistergos, T.1, Autor           
Hayakawa, H., Autor
Carrasco, V. M. S., Autor
Arlt, R., Autor
Cliver, E. W., Autor
Dudok de Wit, T., Autor
Friedli, T. K., Autor
Karachik, N., Autor
Kopp, G., Autor
Lockwood, M., Autor
Mathieu, S., Autor
Muñoz-Jaramillo, A., Autor
Owens, M., Autor
Pesnell, D., Autor
Pevtsov, A., Autor
Svalgaard, L., Autor
Usoskin, I. G., Autor
van Driel-Gesztelyi, L., Autor
Vaquero, J. M., Autor mehr..
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 Zusammenfassung: We report progress on the ongoing recalibration of the Wolf sunspot number ($S_{\mathrm{N}}$) and group-sunspot number ($G_{\mathrm{N}}$) following the release of version 2.0 of $S_{\mathrm{N}}$in 2015. This report constitutes both an update of the efforts reported in the 2016 Topical Issue of Solar Physics and a summary of work by the International Space Science Institute (ISSI) International Team formed in 2017 to develop optimal $S_{\mathrm{N}}$and $G_{\mathrm{N}}$reconstruction methods while continuing to expand the historical sunspot-number database. Significant progress has been made on the database side while more work is needed to bring the various proposed $S_{\mathrm{N}}$and (primarily) $G_{\mathrm{N}}$reconstruction methods closer to maturity, after which the new reconstructions (or combinations thereof) can be compared with (a) “benchmark” expectations for any normalization scheme (e.g., a general increase in observer normalization factors going back in time), and (b) independent proxy data series such as F10.7 and the daily range of variations of Earth’s undisturbed magnetic field. New versions of the underlying databases for $S_{\mathrm{N}}$and $G_{\mathrm{N}}$will shortly become available for years through 2022 and we anticipate the release of the next versions of these two time series in 2024.

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 Datum: 2023
 Publikationsstatus: Erschienen
 Seiten: 44
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1007/s11207-023-02136-3
Anderer: Clette2023
 Art des Abschluß: -

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Titel: Solar Physics
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: 44 Band / Heft: 298 Artikelnummer: 44 Start- / Endseite: - Identifikator: ISBN: 1573-093X