Sunspot Index

Time-series List

• Sunspot Index : Standard PSL Format, CSV, and NetCDF (What is standard format?)

Related Time-series

Solar flux

Links

• SIILSO web site.
• NOAA Space Weather Prediction Center

Original Source

• Data is from SIILSO at their web site. This is version 1.0. There is an updated version available at their site.
  

Time-series source dataset(s)

Observed count

Citation

• Please site "credit: Source: WDC-SILSO, Royal Observatory of Belgium, Brussels, `year(s)-of-data'".

References

• See https://wwwbis.sidc.be/silso/datafiles
• Clette, F., Svalgaard, L., Vaquero, J.M., Cliver, E. W., 2014: Revisiting the Sunspot Number. A 400-Year Perspective on the Solar Cycle, Space Science Reviews, Volume 186, Issue 1-4, pp. 35-103. DOI: 10.1007/s11214-014-0074-2 or as an ISSI book: The Solar Activity Cycle, Space Sciences Series of ISSI, Volume 53. ISBN 978-1-4939-2583-4, Springer, pp. 35-103. DOI: 10.1007/978-1-4939-2584-1_3
• Clette, F., Lefèvre, L., 2016, The New Sunspot Number: assembling all corrections, Solar Physics, 291, DOI: 10.1007/s11207-016-1014-y
• Clette, F., Lefèvre, L., Cagnotti, M., Cortesi, S., Bulling, A., 2016: The Revised Brussels-Locarno Sunspot Number (1981 - 2015), Solar Physics, 291, DOI: 10.1007/s11207-016-0875-4
• An entire issue of the Solar Physics Journal is dedicated to the recent recalibration of the Sunspot number:
Clette, F., Cliver, E.W., Lefèvre, L, Svalgaard, L., Vaquero, J.M., Leibacher, J.W., 2016: Preface to Topical Issue: Recalibration of the Sunspot Number, Solar Phys., 291, DOI: 10.1007/s11207-016-1017-8