A prototype implementation of the high resolution rapid refresh for Alaska
This presentation outlines the evolution of the prototype ARSC HRRR and its use by the NWS in Alaska. Originally initialized with the 12km NAM, the ARSC HRRR is now initialized with the 13km RR, opening the possibility to optimize for more frequent runs. Additionally, given some concerns over lengthy model spin-up times, experiments will be performed to gauge the efficacy of running the ARSC HRRR in a warm-start mode, initializing each forecast with the previous ARSC HRRR forecast, and then extending the experiments to assess the desirability of performing local data assimilation with each run. These activities are taking place during Summer and Fall 2010 and will be reported on during this presentation.