PacIOOS’ Simulating WAves Nearshore (SWAN) model is a 5-day, hourly forecast for the region surrounding the island of Oʻahu in the State of Hawaiʻi at approximately 500-m resolution. This high-resolution wave model helps capture shallow water effects and nearshore coastal dynamics such as refracting, shoaling, and shadowing.
IOOS Modeling Community of Practice Models and Products
IOOS® data comes from a variety of instruments that are part of the nationwide observing system, including buoys, high frequency radar systems, water level sensors and gliders. Understanding the current and future state of our Nation’s coasts, oceans, and Great Lakes from these disparate and complex data sets is a challenge.
The IOOS® Regional Associations, academic, industry, and local and state government partners use models and tailored model products to understand and communicate current marine conditions, and forecast future marine conditions. Multiple user focused applications and products are often developed from one model, making the IOOS® Modeling Community of Practice model portfolio efficient and specifically tailored to stakeholder needs in their respective regions. IOOS® delivers and disseminates these models, forecasts, and products so that decision-makers can take action to improve safety, enhance the economy, and protect the environment.
Often, models developed by IOOS® partners are transitioned to NOAA for operational use; these are not included in the IOOS® modeling catalog, but are included in NOAA’s Operational Forecast Systems and Harmful Algal Bloom (HAB) forecasts. Additional model outputs from IOOS® partners can also be visualized in the IOOS® Model Viewer.
WHY USE MODELS?
IOOS uses models to understand current marine conditions, and forecast and predict future marine conditions.
Data Models organize and standardize data elements to understand how they relate to one another and to ocean, coastal, and Great Lakes properties
Model Applications translate and visualize modeling outputs to make data easier to see and understand.
Catalog of Models and Products
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Active
Region: Pacific
Time Range: 5-day forecast
Model Component: SWAN
Outputs: Wave Direction, Wave Height, Wave Period
Products:
A three-dimensional ocean modeling system for the Prince William Sound (PWS) consisting of a regional ocean model component forced by output from a regional atmospheric component and includes a data assimilation component for the ocean. Model run from 2011-2018.
Region: Pacific
Time Range: Nowcast; 48-hour forecasts
Model Component: ROMS
Outputs: Currents, Salinity, Temperature
A bathymetric digital elevation model with nominal 1-km grid spacing that is mostly based on ship sounding datapoints, including Electronic Navigation Chart (point soundings, research vessel underway soundings, multibeam swath mapping datasets and digitized point soundings from paper nautical charts.
Region: Pacific
Time Range: N/A
Outputs: Bathymetry, Depth
PacIOOS’ Regional Ocean Modeling System (ROMS) provides a 7-day, 3-hourly forecast for the region surrounding the main Hawaiian Islands at approximately 4-km (2.5-mile) resolution. Outputs a current forecast, temperature forecast, and salinity forecast.
Region: Pacific
Time Range: 7-day forecast, reanalysis
Model Component: ROMS
Outputs: Currents, Salinity, Temperature
PacIOOS’ Regional Ocean Modeling System (ROMS) provides a 7-day, 3-hourly forecast for the region surrounding the southern half of the island of Oʻahu and parts of adjacent Penguin Bank offshore of Molokaʻi in the State of Hawaiʻi at approximately 1-km (0.6-mile) resolution. Outputs a current forecast, temperature forecast, and salinity forecast.
Region: Pacific
Time Range: 7-day forecast
Model Component: ROMS
Outputs: Currents, Salinity, Temperature
PacIOOS’ Regional Ocean Modeling System (ROMS) provides a 3-day, 3-hourly forecast for the region surrounding the south shore of the island of Oʻahu in the State of Hawaiʻi at approximately 200-m (656-ft) resolution. Outputs a current forecast, temperature forecast, and salinity forecast.
Region: Pacific
Time Range: 72-hour forecast
Model Component: ROMS
Outputs: Currents, Salinity, Temperature
Active
PacIOOS’ Weather Research and Forecasting (WRF) model provides 2.5-day, hourly forecasts for the region surrounding the island of Oʻahu in the State of Hawaiʻi at approximately 1.5-km (0.9-mile) resolution, including forecasts of wind, air temperature at 2 meters (6.6 ft) above the sea surface, and ainfall rate (the amount of rain that would fall over the course of an hour). Rainfall can be categorized as light (< 0.1 in/h) (< 2.5 mm/h), medium (0.1-0.3 in/h) (2.5-7.6 mm/h), heavy (> 0.3 in/h) (> 7.6 mm/h), or violent (> 2.0 in/h) (> 50 mm/h). The forecast is run daily and gets updated on this website between 1:30 PM and 2:30 PM Hawaiʻi Standard Time (UTC-10) every afternoon.
Region: Pacific
Time Range: 60-hour forecast
Model Component: WRF
Outputs: Air Temperature, Precipitation, Rain, Wind
Products:
PacIOOS’ Regional Ocean Modeling System (ROMS) provides a 3-day, hourly forecast for the region surrounding the beaches of Waikīkī along the south shore of Oʻahu in the State of Hawaiʻi at approximately 40-m (131-ft) resolution. The forecast is run daily and gets updated on this website around 1:30 PM Hawaiʻi Standard Time (UTC-10) every afternoon. Outputs a current forecast, temperature forecast, and salinity forecast.
Region: Pacific
Time Range: 72-hour forecast
Model Component: ROMS
Outputs: Currents, Salinity, Temperature
Active
PacIOOS’ Weather Research and Forecasting (WRF) model provides a 6-day, hourly forecast for the region surrounding the Mariana Islands, including Guam and the main islands of the Commonwealth of the Northern Mariana Islands (CNMI), at approximately 3-km (1.9-mile) resolution including forecasts of wind, air temperature at 2 meters (6.6 ft) above the sea surface, and rainfall rate (the amount of rain that would fall over the course of an hour). Rainfall can be categorized as light (< 0.1 in/h) (< 2.5 mm/h), medium (0.1-0.3 in/h) (2.5-7.6 mm/h), heavy (> 0.3 in/h) (> 7.6 mm/h), or violent (> 2.0 in/h) (> 50 mm/h). The forecast is run daily and gets updated on this website between 9:30 AM and 10:30 AM Chamorro Standard Time (UTC+10) every morning.
Region: Pacific
Time Range: 6-day forecast
Model Component: WRF
Outputs: Air Temperature, Precipitation, Rain, Wind
Products:
PacIOOS’ Regional Ocean Modeling System (ROMS) provides a 6-day, 3-hourly forecast for the region surrounding the Mariana Islands, including Guam and the main islands of the Commonwealth of the Northern Mariana Islands (CNMI), at approximately 2-km (1.2-mile) resolution. Outputs a current forecast, temperature forecast, and salinity forecast.
Region: Pacific
Time Range: 6-day forecast
Model Component: ROMS
Outputs: Currents, Salinity, Temperature