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Perbandingan Hasil Luaran Model Prakiraan Cuaca Conformal-Cubic Atmospheric Model (CCAM) terhadap Arpege dan Tlaps
This research accomplished the comparison of weather forecast output of CCAM upon ARPEGE and TLAPS to examine• the performance of CCAM in Indonesia region. The Global Forecasting System (GFS) model output was used as the initial condition of cc AM. The comparison was applied to theforecast output on 1-28 February 2009 which represents the rainy season and 1-31 Mays 2009 which represents the onset of dry season in Indonesia. The comparison was conducted qualitatively by image visual comparison and quantitatively by spatial correlation calculation using Grid Analysis and Display System (GrADS) software version 18SLlI. The result showed that the output from the three models have almost similar pattern, however output of ARPEGE and TLAPS were fairly better than CCAM. This result might emerge from the use of the ARPEGE and TLAPS data analysis as representation of observation data. The average spatial correlation showed a
• decreasing trend pattern while the average of RMSE showed a rising trend pattern along with the increasing of prediction time length. For zonal and meridional wind, it was found of having similar pattern as ARPEGE and TLAPS results. While for surface temperature and MSLP parameters, it was found of a significant difference in RMSE. As conclusion, CCAM has showed a fairly good performance upon generating weather forecast at regional scale in Indonesia, though there is still need to be improvedfurther model tunning and validation.
A0001547 | Jurnal Meteorologi dan Giofisika:11(1)2010:20-31 | Available |
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