EVALUATION OF THE EFFECT OF SPORADIC-E ON HIGH FREQUENCY RADIO WAVE PROPAGATION IN THE ARCTIC Article Cameron T.G., Fiori R.A.D., Galeschuk D., Themens D.R., Warrington E.M., Thayaparan T. Journal of Atmospheric and Solar-Terrestrial Physics. Elsevier Ltd. Vol. 228. 2022. 105826 p.