23rd Conference on Weather Analysis and Forecasting/19th Conference on Numerical Weather Prediction


Renovation of JMA-GSM

Kengo Miyamoto, AESTO/JMA, Tokyo, Japan

JMA-GSM is the global atmospheric model for official weather forecasting in Japan. The model was renovated at 5 August, 2008. Although the principles were not changed from the conventional model, the implementation was renovated: reduced spectral transformation was introduced; the calculation domain was two-dimensionally decomposed; the procedures of inter-node communication were refined; OpenMP was adopted for shared memory parallelization; some defectives were corrected; the source program was reorganized.

In this presentation, we will introduce the details of the renovation and show how the renovation makes the model faster and improves the accuracy.

Session 2A, Model Overviews and Recent Updates
Monday, 1 June 2009, 10:30 AM-12:00 PM, Grand Ballroom East

Previous paper  Next paper

Browse or search entire meeting

AMS Home Page