High Resolution Global Model of KMA- Preliminary Results

Korea Meteorological Administration (KMA) has operated the Global Data and Assimilation and Prediction System (GDAPS) based on the Japan Meteorological Agency (JMA) global spectral model, T106L20 GSM8911, since 1998. After KMA has had many ongoing efforts for improving the performance of GDAPS, especially for improving analysis system and resolution, current GDPAS with 3dVar analysis system and T213L30 resolution shows good performance for short range forecast (by 3 days) compared to the performances of global models operated by other meteorological centers. However, GDAPS still needs to be handled to improve the performance of medium range forecast over 4 days. Owing to installation of new supercomputer Cray X1-3/192-L at KMA, the new NWP system is being launched on Cray X1-3/192-L after the migration of NWP system on SX-5 in 2005. The high resolution global models GDAPS T426L40 are prepared for test to improve the performance. The recent results of the experiments for GDAPS T426L40 on new super computer will be presented. According to preliminary results for the new high resolution global model of KMA, T426L40 shows stable performance and better results for medium range forecast over 4 days compared to current GDAPS T213L40.