Studying marine fog using Weather Research and Forecast (WRF) model

Fog can seriously affect daily life. However, due to the complex mechanisms involved, accurate and in time fog forecasts are still difficult. This study has used the Weather Research and Forecast model (WRF) to simulate marine advection fog over Sable Island, NS in summer 2018. Chapter 2 uses the real case simulation to find a good physics parameterization and apply it as a daily forecast. The results show that the model tends to give much lower visibility than observations on this small offshore island. Chapter 3 uses the single column model to simulate an advection fog. Different gravitational settling options have been examined, and it is found that the turbulent deposition can be a good solution to the problem. In Chapter 4 the turbulent deposition is tested in the real case simulation. The results show that the visibility can become higher, but further study is needed