10-Year Reanalysis of Hawaiian Islands Ocean Forecast System
10-Year Reanalysis of Hawaiian Islands Ocean Forecast System
Posted January 27, 2019Since 2009, PacIOOS has been generating daily forecasts of the ocean state around the main Hawaiian Islands through the Regional Ocean Modeling System (ROMS). To optimize the forecast, ocean and atmospheric near real-time observations are incorporated daily to create the most realistic dynamical state from which to forecast. Some observational data are accessible with a delay, preventing them from entering the daily assimilations. Going back and assimilating all available data is called a reanalysis.
In a recent study, published in the Journal Geoscientific Model Development and authored by Dale Partridge, Tobias Friedrich, and PacIOOS co-investigator Professor Brian Powell, researchers used advanced techniques to reanalyze 10-years worth of ocean circulation data around Hawaiʻi. Observational information, such as surface current observations, satellite, sea gliders, ARGO floats, and other data, play a vital role to improve modeled forecasting capacities. This reanalysis provides a consistent dataset for further studies of the ocean dynamics around Hawaiʻi and demonstrates the interplay, value, and need of observational and forecasting data.
