Ocean State and Forecast Component

J. Aucan, G. Carter, C. Chavanne, Y.-L. Chen, K.-F. Cheung, P. Flament, M.

Garces, P. Hacker, Y.-L. Jia, R. Lukas, D. Luther, M. Merrifield, J. Park, G.

Pawlak, J. Potemra, K. Richards, H.-C. Yeh

Observations Models

Applications

Daily High-Resolution Wind Modeling over the Hawaiian Islands

Yi-Leng Chen and Hsi-Chyi Yeh, Meteorology

MM5 wind speed (a) and wind direction (b) around the Hawaiian Islands (color-coded) with tugboat route (black line) between Oahu and the Big Island. Note very enhanced winds in main Alenuihaha channel

Tug

Wind fields and interisland shipping

Improved wind fields around island topography

Models for Wave Hindcast & Forecast

Boussinesq Model

Global WaveWatch 3

SWAN – Littoral Wave Model

Regional WaveWatch3

K-F Cheung, ORE

Directional Wave Buoys

J. Aucan, M. Merrifield, OceanographyACE, CDIP

Kaumalapau Harbor,Lanai

Harbor Conditions

Barbers Point Harbor

M. Merrifield, D. Luther, J. Aucan - Oceanography

Wave & water level stations

Kilo Nalu: Real-time Wave/Current Data

KN web site products: www.soest.hawaii.edu/OE/KiloNalu

Waves (via ADCP at 10m, 20m, 20 min avg) Directional wave spectra, wave characteristicsCurrents vs depth (10m, 20m, 20 min avg)StratificationTemperature vs depth (10m, 20m), Salinity (10m)

G. Pawlak - ORE

ISLA

100m

100m

100m

20m

d=20m

d=30m

d=30m

Node

Hydrophone

Hydrophone

150m

Hydrophone

d=80m

3 Hydrophone +ADCP + T-Chain

d=30m

150mShore Station

Kona Ocean Monitoring Network – KOMNet

ISLA

Regional Navy models: Sea surface height & temperature

5/20/08

SSH

5/20/08

SST

J. Potemra & P. Hacker, IPRC, HIGP

Ocean circulation model comparisons

Oahu Region, 17 Sep. 2007

Note:• Coastline resolution• Channel resolution• Open-ocean and near-shore currents

Enhanced resolution model captures eddies.Model output need to be evaluated with observations.

Oahu South Shore

Island of Oahu

0.02°

0.01°

Y.-L. Jia, K. Richards - IPRC, Oceanography

RX antennas Ko’Olina

X

HF Radio CurrentsP. Flament, C. Chavanne - Oceanography

RX antennas Kaena

X

X

HF Radio currentsP. Flament, C. Chavanne - Oceanography

HIOOS High Frequency Radio Surface Currents

Ocean Gliders

G. Carter, Oceanography

Tidal currents

G. Carter, Oceanography

Tidal elevation

G. Carter, Oceanography

High surf + high tide

High tide + high sea level

High tide + high sea level

High tide + high sea level