Implementing the Nearshore Wave Prediction System as an on-demand coastal wave guidance system on WCOSS

Roberto Padilla
1:30 pm November 24 in Room 2552

The Nearshore Wave Prediction System (NWPS) is currently developed to provide on-demand, high-resolution nearshore wave guidance to the coastal forecasters of the National Weather Service (NWS). The nearshore wave model applied is SWAN (Booij et al., 1999), and alternatively a nearshore version of WAVEWATCH III (Tolman et al., 2002). Wave boundary conditions are received from the National Centers for Environmental Prediction's (NCEP) global WAVEWATCH III model, and during storm events in the Atlantic and Gulf of Mexico, wave boundary conditions are ingested from the NWPS implemented at NHC-TAFB domain from where the official winds are also used, surface currents are ingested from RTOFS Global and water levels are taken from the Extratropical Surge and Tide Operational Forecast System (ESTOFS, Feyen et al., 2013). NWPS produces various types of output, including fields of integral wave parameters, spectra and individual partitioned and tracked wave systems. This model guidance is subsequently ingested into AWIPS to aid in the generation of detailed coastal marine forecasts. NWPS has been designed to run locally at NWS’s coastal Weather Forecast Offices (WFOs), covering their forecast domains of responsibility and is driven by forecaster developed wind grids from the Advanced Weather Interactive Processing System’s (AWIPS) Graphical Forecast Editor (GFE). However, servers at WFOs are severely constrain by all the processes and applications and for this reason NWPS will be installed on WCOSS, this poses several challenges: the architecture of NWPS must be changed to fulfill NCO requirements; forecasters will still provide the wind fields from AWIPS through LDM at their respective HQ and, they will have the control when NWPS will run on their geographical domain. Moreover, the NWPS results will need to be transfer to every coastal WFO via SBN.