抄録
Structures of sea and land breeze over the Osaka Bay area are complex because of westerly general wind flow and complex topographical conditions. The purpose of this study is to simulate three dimensional structures of realized sea and land breeze over the area by introducing the objective analysis data. Vertical profiles of wind velocity were measured by a Doppler sodar anemometer at the Osaka Nanko area in the 2003 summer. Numerical model simulations were carried out to produce weather conditions which occurred during the measurement. Simulated vertical profiles of horizontal wind velocity vectors agreed quite well with the observed one. However vertical velocity couldn't be simulated accurately. Some modification will be needed for the numerical model to calculate behavior of atmospheric pollutants emitted in the bay area.
