NEUTRAL WIND-INDUCED F REGION MOVEMENTS UNDER THE COUPLING OF IONOSPHERE-THERMOSPHERE

Responses of ionospheric F₂ peak to three types of meridional winds,namely constant winds,Servo Model-based winds and HWM-90 winds,are investigated numerically for Wuchang (30.5'N,114.4"E) and Wakkanai(45°5,N,141.7°E),with the help of a theoretical model for one-dimensional and time dependent ionospheric profile.The results indicate thats(1) the response is north-south and day-night asymmetrical,and the latitudinal difference is obvious as can be expected.It shows that within an actual atmosphere background,the ionosphere-ther.mosph#re may be strongly coupled through the neutral wind.(2) The Servo Model-based meridional wind is verified to be reasonable and reliable.(3) HWM-90 gives a passable description of the meridional wind for the two stations concened,while it looks not so good as the Servo Model-based wind.