AquaModel contains flow models and site data to be modeled.



EASy is the GIS program that simulates the sites, integrating high quality imagery and analytical tools.


Coastal Flow Models

AquaModel now interfaces with four types of modeled 3-dimensional ocean curent data: ROMS, ECCO2, ADCIRC, and the University of Hawai'i Coastal Circulation Model.  This modeled data provides the detail necessary to evaluate the effects of convergent and divergent current flows as well as eddy circulation.  It addresses the problem of matching differences in temporal and spatial resolution between the circulation model output and that used by AquaModel to simulate the processes of waste production, waste transport, and the biological transformations of the waste.

For this study, we used 3-dimensional tidal currents from the University of Hawai'i combined with local current meter measurement data. The characteristics of the four ocean current models are as follows:

U of H Ocean Circulation ModelUniversity of Hawai'i Ocean Circulation Model
  • Provides detailed tidal current data around individual Hawai'ian Islands
    • Temporal resolution of 1 hour
    • Spatial resolution 1 kilometer
ROMS ModelNASA Jet Propulsion Laboratory ROMS Model
  • Provides 3-dimensional current vectors for specific regions.
    (We have used the Southern California Bight region)
    • Temporal resolution of 3 hours
    • Spatial resolution of 2 kilometers
  • Provides 3-dimensional current vectors worldwide
  • Also provides predicted temperature and salinity
    • Temporal resolution of 6 hours
    • Spatial resolution of 25 kilometers
  • Provides detailed tidal data for a specified region.
    • Temporal resolution of 15 minutes
    • Spatial resolution varies between 30 and 800 meters