Modelling hourly wind speeds for forecasting using arma and arima model

Hey I have a dataset that consist of hourly wind speed data that is from January 2000 to December 2007 and I am trying to model the data to fit an arma & arima model. I first transformed the data to make it more gaussian shaped. I am trying to remove the seasonalities now and after i remove the daily seasonality, the acf still shows that the data has periods. How do I go about fixing this? Do I apply a yearly seasonality now?