Real-Time MIT Product and Descriptive Pages for PN07

P.F.J. Lermusiaux, P.J. Haley, Jr.,
W.G. Leslie, O. Logutov, J. Xu,
A. Agarwal, L. Burton, H. Hornick, M. Ueckermann
H. Schmidt

Massachusetts Institute of Technology
Center for Ocean Engineering
Mechanical Engineering
Cambridge, Massachusetts

MIT PN07 Team Leaders
H. Schmidt, A. Baggeroer, J. Curcio, J. Leonard, P. Lermusiaux and D. Rus

PN07 Real-time Exercise

Estimates of Present Environmental-Acoustic Conditions in the PN07 Domain

Section Locations	Sound Spd. Sec. Along Dabob Bay	Trans. Loss (900Hz, sd=30m) Along Dabob Bay	Sound Spd. Sec. Across Dabob Bay	Trans. Loss (900Hz, sd=30m) Across Dabob Bay

Velocity Ave. 0-100m	Sound Speed 0m	Sound Speed 20m	Temperature 0m	Temperature 20m

Snapshot Time-Series of the Estimated Ocean State (every 6 hours)
T 0m	T 20m	T 50m	C 0m	C 20m	C 50m	Vel. 0m	Vel. 20m	Vel. 50m	0-100m Ave. Vel.	Wind Stress

Vertical Sections
T. along Dabob Bay	T. across Dabob Bay	C. along Dabob Bay	C. across Dabob Bay

Transmission Loss Estimates (at 06Z and 18Z)

5 Oct. 6 Oct. 7 Oct. 8 Oct. 9 Oct. 10 Oct. 11 Oct.

Transmission Loss Estimates (at 06Z and 18Z)
5 Oct.	6 Oct.	7 Oct.	8 Oct.	9 Oct.	10 Oct.	11 Oct.

The ocean predictions are obtained using our Multidisciplinary Simulation, Estimation and Assimilation System (MSEAS) and its free-surface primitive-equation model and data assimilation schemes. These predictions are combined with a range-dependent seabed model (courtesy of NAVOCEANO and Mike Porter and his HLS team) to estimate the environmental fields used for acoustic predictions. The acoustic model utilized is the Coupled SACLANTCEN normal mode propagation loss model (C-SNAP). It is a range-dependent one-way coupled modes model with impedance matching to account for energy conservation.
Files Containing our Data-driven Model Estimates and Predictions
- ASCII formatted files for NAFCON
Barotropic tidal predictions for PN07 in Dabob Bay
- Calculation of Barotropic Tides
- Sea Surface Height
- Tidal Current at 3 hour intervals
- Tidal Current at hourly intervals
As these results show, we expect barotropic tidal currents to be stronger on Sep 30-Oct 01 and weaker around Oct 09, 2007. Tidal variability is the largest in the Hood Canal. The center portion of Dabob Bay is a shadow zone for tides (weak barotropic tides).