Campbell Island upper air data impact study
A study was performed to determine i f the removal of Campbell Island upper air data would significantly affect the Bracknell Global Numerical Weather Prediction (NWP) model output. Eight weather situations between September 1993 and July 1994 were re-run on the Bracknell model with and without upper air data from Campbell Island. The differences between the two model runs in the New Zealand area were assessed in each case to determine the impact of the data on the model output. In the situations studied, the results indicated that the effect was minimal.