000003012 001__ 3012
000003012 005__ 20170106113920.0
000003012 0247_ $$2DOI$$a10.1007/s11207-016-0970-6
000003012 037__ $$aSCART-2017-0008
000003012 100__ $$aDudok de Wit, Thierry
000003012 245__ $$aUncertainties in the Sunspot Numbers: Estimation and Implications
000003012 260__ $$c2016
000003012 520__ $$aSunspot number series are subject to various uncertainties that are still poorly known. The need to understand these better was recently highlighted by the major revision of the international Sunspot Number (Clette et al., in Space Sci. Rev. 186, 35, 2014). We present the first thorough estimation of these uncertainties, which behave as Poisson-like random variables with a multiplicative coefficient that is time- and observatory-dependent. We provide a simple expression for these uncertainties, and reveal how their evolution in time coincides with changes in the observations and processing of the data. Knowing their value is essential for properly building composites out of multiple observations, and for preserving the stability of the composites in time.
000003012 594__ $$aSTCE
000003012 6531_ $$aSunspots
000003012 6531_ $$aStatistics
000003012 700__ $$a Lefèvre, Laure
000003012 700__ $$aClette, Frédéric
000003012 773__ $$c2709-2731$$n9-10$$pSolar Physics$$v291$$y2016
000003012 8560_ $$flaure.lefevre@observatoire.be
000003012 905__ $$apublished in
000003012 980__ $$aREFERD