From an analysis of geomagnetic and solar wind data, Lockwood et al (1999) (hereinafter referred to as LSW99) reported that The solar coronal magnetic field had increased by more than a factor of two during the last century. If true, this would be an important discovery. Recently, Svalgaard and Cliver (2006) (hereinafter referred to as SCOS) reported an analysis based on our newly developed interdiurnal variability (IDV) index of geomagnetic ...