Using the 1986 data of Indian observatories, new results are given on 8 landmark parameters that depict the structures of hourly latitudinal profiles of worldwide part of Sq (WSq) current from 0700 to 1700 local time. Diurnal and seasonal features are discussed. Variations of the ratio of peak return to peak forward current intensity demonstrates that, when the current contracts, it intensifies relatively greater at a farther than at a nearer distance to the current centre. Some evidence was found for the possible existence of counter worldwide part of Sq (CWSq) when the WSq current flows counter to its normal direction. About 14 per cent of CWSq profiles are found predominantly in the morning and afternoon hours and their parameters are discussed.
Journal of Atmospheric and Solar-Terrestrial Physics 04/1996; 58(5):541-553. DOI:10.1016/0021-9169(95)00055-0