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Multi-year (1995–2013) velocity data collected by the Super Dual Auroral\udNetwork (SuperDARN) HF radars are considered to investigate seasonal and\udsolar cycle variations of the convection reversal boundary (CRB) location\udfor interplanetary magnetic field (IMF) Bz < 0. By considering monthly\uddata sets we show that the CRB is at higher latitudes in summer between 1995\udand 2007. The poleward shifts are on the order of 2–5°.\udAfter 2007, the seasonal effect weakens, and the highest latitudes for the\udCRB start to occur during the winter time. We show that the CRB latitudes\uddecrease with an increase of the IMF transverse component at a rate of\ud(1–2°)/2 nT. Because of this effect, on average, the\udCRB latitudes are lower during high solar activity periods with stronger\udIMFs. We also confirm the effect of the CRB dawn-dusk shifts related to the\udIMF changes in the IMF By sign

Seasonal and solar cycle variations in the ionospheric convection reversal boundary location inferred from monthly SuperDARN data sets