The Taiwan Central Weather Bureau Regional Spectral Model for Seasonal Prediction: Multiparallel Implementation and Preliminary Results

Henry Juang, Hann-Ming; Shiao, Chih-Hui; Cheng, Ming-Dean
August 2003
Monthly Weather Review;Aug2003 Parts 1 and 2, Vol. 131 Issue 8, p1832
Academic Journal
A regional spectral model (RSM) is developed at the Taiwan Central Weather Bureau (CWB). It is based on the same model structure, dynamics, and physics of the CWB global spectral model (GSM) and the perturbation concept of the National Centers for Environmental Prediction (NCEP) RSM for lateral boundary treatment. The advantages of this new regional model include minimization of possible inconsistency between GSM and RSM through lateral boundary influence and reduction of resources used to manage and maintain the model. One-dimensional decomposition is utilized to slice the model into subdomains to run on a massive parallel-processor machine. The Message-Passing Interface (MPI) is adopted to communicate among each subdomain. The computational dependency, such as the summation in spectral transformation, is a restriction for the decomposition, so that the reproducibility using different numbers of processors is achieved. The performance in terms of wall-clock time follows the theoretical curve of parallelization. It can reach 95% parallelization by "homemade" PC Linux cluster, and 90% by CWB Fujitsu VPP5000. One case is selected to perform 2-month integration in a simulation mode and a forecast mode. The results indicate a reasonable monsoon frontal evolution as compared with analysis, and it has similar or less root-mean-square error (rmse) as compared to that of CWB GSM. The same run with NCEP RSM nested into CWB GSM shows a larger rmse than CWB RSM; it demonstrates the advantage of having the same model structure, dynamics, and physics between CWB GSM and CWB RSM.


Related Articles

  • Virtual Geographic Information System (VGIS).  // Poptronics;Oct2001, Vol. 2 Issue 10, p14 

    Reports the invention of the Virtual Geographic Information System (VGIS) for weather prediction. Conversion of storm data into a model of storm systems; Incorporation of the system with weather research facilities; Impact of VGIS on weather forecasting.

  • WEATHER WATCH.  // Stonewall County Courier (Aspermont, TX);3/ 1/2012, Vol. 25 Issue 10, p1 

    The article offers information on the weather condition in Stonewall County, Texas provided by the National Weather Service Observer.

  • Cooperation and collaboration among the nation's meteorology, oceanography, and satellite... Dumont, Robert J.; Nelson, Cynthia A. // Bulletin of the American Meteorological Society;Sep96, Vol. 77 Issue 9, p2067 

    Looks into the cooperation and collaboration in weather and ocean prediction between the various meteorological, oceanographic and satellite operating processing centers (OPC) in the United States. Missions of the individual OPCs; Forces for change and future directions for improved cooperation...

  • weather report.  // Clarendon Enterprise (TX);3/3/2011, Vol. 22 Issue 12, p3 

    The article presents a weather report in Clarendon, Texas from February 21-27, 2011.

  • Storm clouds gather. Murphy, Damien // Bulletin with Newsweek;12/26/1995-1/2/1996, Vol. 116 Issue 6002, p26 

    Discusses about the Meteorological Service of New Zealand's (MetService) filing of a complaint against Australia's Bureau of Meteorology's use of unfair and anti-competitive moves to keep New Zealand out of the Australian weather picture. MetService's offering of on-line computerized, colored...

  • Stormy Weather. Mohnkern, Priscilla // Oklahoma Today;Jan/Feb2001, Vol. 51 Issue 1, p19 

    Features the Center for the Analysis and Prediction of Storms, a weather-forecasting center which is located within the Oklahoma Weather Center. Utilization of a forecast system called the Advanced Regional Prediction System; Sources of funding.

  • Weather Whys.  // Lakelander (Whitney, TX);12/9/2015, Vol. 28 Issue 47, p4 

    The article presents questions and answers related to weather balloons including how the U.S. weather service and other agencies use them and the first uses of weather balloons beginning in the 1890s.

  • Whither weather. Jones, Morris // Bulletin with Newsweek;9/9/2003, Vol. 121 Issue 6389, p70 

    The article focuses on the possibility of meteorological forecasts tailored to personal needs of individuals. Making fun of weather forecasts is an Australian tradition but deeper research show that predictions are more accurate than folklore would have one believe. At present, the Australian...

  • LAKELAND WEATHER INFORMATION.  // Lake District (Landmark Visitors Guide);2004 2nd Edition, p216 

    This section presents a directory of weather information in the Lake District in England.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics