697 citations · 1.6k across the 26 of their papers we have counts for
28 papers
Re-calibration of the Sunspot Number: Status Report
F. Clette, L. Lefèvre, T. Chatzistergos +18
We report progress on the ongoing recalibration of the Wolf sunspot number (SN) and Group sunspot number (GN) following the release of version 2.0 of SN in 2015. This report consti…
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…
Several Populations of Sunspot Group Numbers -- Resolving a Conundrum
Leif Svalgaard
The long-standing disparity between the sunspot number record and the Hoyt and Schatten (1998, H&S) Group Sunspot Number series was initially resolved by the Clette et al. (2014) r…
Calibration of the Sunspot and Group Numbers Using the Waldmeier Effect
Leif Svalgaard, David H. Hathaway
The Waldmeier Effect is the observation that the rise time of a sunspot cycle varies inversely with the cycle amplitude: strong cycles rise to their maximum faster than weak cycles…
Prediction of Solar Cycle 25
Leif Svalgaard
Prediction of solar cycle is an important goal of Solar Physics both because it serves as a touchstone for our understanding of the sun and also because of its societal value for a…
Calibration of the Total Solar Irradiance Data Record
Leif Svalgaard
Solar surface magnetic field seems to be able to explain variations in Total Solar Irradiance on timescales from hours to decades. Using magnetograms from spacecraft (MDI and HMI)…