The presentations and discussions which took place during the second meeting of the Solar Cycle Workshop are summarized under the headings: sunspot minimum, the extended cycle, the large-scale photospheric motions, the large-scale magnetic fields and the polar reversal, the small-scale fields, global cyclic phenomena and the fundamental processes. The progress achieved so far is assessed and the directions for future observational and theoretical work are suggested. 206 P.R. WILSON September 1986. He forecasts that small old-cycle regions would continue to emerge at least until about March 1988.
However, K. Harvey found that, while the ephemeral active regions (ERs) were approximately in phase with the sunspot number count, their minimum had occurred about a year before sunspot minimum. Further, W. Livingston noted that the equivalent widths of photospheric lines and of Ca K indicated that minimum occurred early in 1985, but that data from the CN bandhead supported the date suggested by McIntosh. These variations presumably stem from the different contributions from the high-and low-latitude components of the extended cycle to these different phenomena.
D. Hathaway presented a colour-coded butterfly diagram constructed using sunspot areas derived from the Greenwich data for 1880-1980. The display illustrated the tendency for large-amplitude cycles to extend to higher latitudes and have shorter periods, and also showed the asymmetry between northern and southern hemispheres in amplitude, phase and latitude distributions.