Serving Collections of Forecast Model Runs with the THREDDS Data Server

Model Run Datasets The RUC model is run hourly, and 12 runs are shown in this collection; note that different runs contain different forecast hours. The complete results for a single run is a model run dataset. The selected example here is the run made on 2006-12-11 06:00 Z, having forecasts at 0,1,2,3,4,5,6,7,8,9 and 12 hours. Constant forecast/valid time datasets A constant forecast dataset is created from all the data that have the same forecast/valid time. Using the 0 hour analysis as the best state estimate, one can use this dataset to evaluate how accurate the forecasts are. The selected example here is for the forecast time 2006-12-11 12:00 Z, using forecasts from the runs made at 0, 3, 6, 9, 10, 11, and 12 Z. There are a total of 24 such datasets in this collection. Constant forecast offset datasets A constant offset dataset is created from all the data that have the same offset time. This collection has 11 such datasets: the 0,1,2,3,4,5,6,7,8,9, and 12 hour offsets. The selected example here is for the 6 hour offset, using forecasts from the runs made at 0, 3, 6, 9, and 12 Z. Best estimate dataset For each forecast time in the collection, the best estimate for that hour is used to create a best estimate dataset, which covers the entire time range of the collection. For this example, the best estimate is the 0 hour analyses from each run, plus all the forecasts from the latest run.