The winter anomaly of 1983/84 as observed in the A3-absorption and 5 kHz atmospherics in Central Europe

The MAP/WINE winter 1983/84 is studied using the LF-MF-HF A3 absorption and 5 kHz atmospherics observed in Czechoslovakia and some other data. The “normal” winter anomaly in Central Europe is developed well in this winter (maximum in mid-January) and appears to be “free of geomagnetic contamination”. The stratospheric warming activity and related changes of prevailing zonal wind in the lower thermosphere in February and March 1984 are followed by decreases of absorption of radio waves. It agrees with our results from preceding winters /1/.