Abstract: The diurnal variations of the ionosphere over the deat Wall Station reveal theWeddell Sea Anomaly in the summer. In this paper, the diumal variations of f₀F₂ andhm are simulared by using a one-dimensional and hme-dependent theorehcal model.We studied the effects of the neutral wind and O⁺ flux on f₀F₂ and h_m and concludedthat one reason why simulated f₀F₂ are greater than measurements is the upperboundary values are overeshmated by IRI. In the last part of the paper, a method forobtaining the actual f₀F₂ and h_m is presented.