Recent Efforts at NCC/CMA to Develop a High Resolution CGCM for Seasonal Forecast. Yong Luo, Yihui Ding, Min Dong and Yongjia Song National Climate Center China Meteorological Administration Beijing 100081, China.
Recent Efforts at NCC/CMA to Develop a High Resolution CGCM for Seasonal Forecast
Yong Luo, Yihui Ding, Min Dong and Yongjia Song
National Climate Center
China Meteorological Administration
Beijing 100081, China
During the recent five years, National Climate Center/China Meteorological Administration has made an effort to develop a high resolution CGCM for operational seasonal forecast purpose by support of a National Key Project of Studies on Short Term Climate Prediction System in China;
The model system has been completed at the end of 2000;
Further evaluation of the model performance is still in process.
Node No. Wallclock Time (s) Speedup Ratio Efficiency
1 267.62 1 100%
2 134.24 1.99 99.5%
4 66.88 4.00 100%
8 37.09 7.22 90.3%
AMIP-II run to validate the performance of atmospheric model
Atmospheric Model Intercomparison Project, Phase II
Jan.1979--Feb. 1996 SST and Sea Ice
A daily flux anomaly coupling methodology has been applied in the coupling scheme between atmospheric and oceanic model.
A 30 year’s integration of the CGCM has been finished.
500hPa height (Jan of the 26th model year)
500hPa height (Aug of the 26th model year)
Precipitation (Jan of the 26th model year)
Precipitation (Aug of the 26th model year)
Experimental seasonal forecast by the AGCM
SST: Persistent SSTA of February
Initial: 00Z March 16
Period: March 16 - August 31
Forecast: Precipitation and 500 hPa
Preliminary analyses of the model results show an ability in reasonably reproducing the current climatology and a potential in experimental seasonal forecast.