noaa/nos/coast survey development laboratory port of new york/new jersey operational forecast system...
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NOAA/NOS/Coast Survey Development Laboratory
Port of New York/New Jersey Port of New York/New Jersey Operational Forecast System Operational Forecast System
(NYOFS)(NYOFS)and Tracer Simulationand Tracer Simulation
Eugene WeiCoastal Survey Development Laboratory
NOAA/National Ocean Service
Ted CaplowPeter Schlosser
Earth and Environmental Engineering Department
Columbia University
2003 Terrain-Following Ocean Models Users Workshop
4-6 August, 2003, PMEL/NOAA, Seattle WA
NOAA/NOS/Coast Survey Development Laboratory
Port of New York/New Jersey Port of New York/New Jersey Operational Forecast System Operational Forecast System
(NYOFS)(NYOFS) and Tracer Simulation and Tracer Simulation
ObjectivesObjectives
Promote Safe NavigationPromote Safe Navigation Provide mariners and port managers Provide mariners and port managers
with with near real-time and forecastnear real-time and forecast water levels and currents water levels and currents throughout the harborthroughout the harbor
Tracer dispersion study and Tracer dispersion study and predictionprediction
NOAA/NOS/Coast Survey Development Laboratory
Physical Oceanographic Real-Time System
Center for Operational Oceanographic Products and Services
NOAA/NOS/Coast Survey Development Laboratory
NeedsNeeds
Near real-time water level and Near real-time water level and current information at many non-current information at many non-gage locationsgage locations
Short term water level and current Short term water level and current forecast guidance informationforecast guidance information
Detail current information (Kill Detail current information (Kill Van Kull) for Coast Guard ship Van Kull) for Coast Guard ship “right of way” decision“right of way” decision
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
Technical Technical ApproachApproach
3-D barotropic Princeton Ocean 3-D barotropic Princeton Ocean Model (POM)Model (POM)
Coarse grid: 73X134 cells, 7 levels, Coarse grid: 73X134 cells, 7 levels, 130 m – 1 km130 m – 1 km
Higher resolution nested fine grid: Higher resolution nested fine grid: 126X34 cells, 7 levels, 70 m – 130 m126X34 cells, 7 levels, 70 m – 130 m
One-way couplingOne-way coupling
NOAA/NOS/Coast Survey Development Laboratory
- One-way coupling
The fine grid (FG) models obtain their open boundary conditions from the coarse grid (CG) models and FG model through a common block. Two models run as a single model.
NOAA/NOS/Coast Survey Development Laboratory
Model Nowcast/Forecast Model Nowcast/Forecast FlowchartFlowchart
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
Model and System Skill Assessments
* Astronomical tide simulation* Hindcast* Semi-operational nowcasts/forecasts* Operational nowcasts/forecasts
NOAA/NOS/Coast Survey Development Laboratory
http://co-ops.nos.noaa.gov/NYOFS/nyofs.shtml
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
* Near real-time model input - Boundary conditions (water levels) at Sandy Hook and Kings Point
Operational Model Forecast System Challenge
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
* Near real-time model input - Boundary conditions (water levels) at Sandy Hook and Kings Point
* System operational flags - CORMS (Continuous Operational Real-time Monitoring
System)
Operational Model Forecast System Challenge
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
* Near real-time model input - Boundary conditions (water levels) at Sandy Hook and Kings Point
* System operational flags - CORMS (Continuous Operational Real-time Monitoring
System)
* System failure automatic recovery procedure - what if a network interruption ? - what if a system server shutdown or reboot ?
Operational Model Forecast System Challenge
NOAA/NOS/Coast Survey Development Laboratory
SF6 Tracer Experiments and Simulations
Earth and Environmental Engineering Department Columbia University
• July 14-25, 2002 at Newark Bay
• injected at 1600 UTC July 14• ~ 0.94 mol dissolved through water column• automatic sampling at 1.2 m depth• gas extractor and gas chromatograph
• passive tracer concentration simulation using NYOFS model • initial concentration and gas exchange rate
NOAA/NOS/Coast Survey Development Laboratory
Daily average concentration agrees well between model and data. Model shows dispersion into lower bay even on Day 1
Daily average concentration agrees well between model and data. Model shows dispersion into lower bay even on Day 1
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory
Measured and Simulated Total SF6 Inventory
Initial Injection: 0.9 molModel is forced with exponential decay gas exchange
Model is forced with exponential decay gas exchange
NOAA/NOS/Coast Survey Development Laboratory
Longitudinal SF6 Concentration Model Data Comparison Along Arthur Kill
Distance inland from Arthur Kill Mouth
Model seems underestimate tracer dispersion probably due to less current speed along AK
Model seems underestimate tracer dispersion probably due to less current speed along AK
NOAA/NOS/Coast Survey Development Laboratory
Longitudinal SF6 Concentration Model Data Comparison Along Kill Van Kull
Distance seaward from Bergen Pt.
Model better representing current speed in KVK, straight channel
Model better representing current speed in KVK, straight channel
NOAA/NOS/Coast Survey Development Laboratory
SF6 Tracer Experiments and Simulations
Earth and Environmental Engineering Department Columbia University
• June 17-July 5, 2003 at East River
• ~ 1.0 mol dissolved through water column• concentration dispersion predictions to assist planning
NOAA/NOS/Coast Survey Development Laboratory
Move the injection location north because the prediction showing dispersion to upper bay faster than expected
Move the injection location north because the prediction showing dispersion to upper bay faster than expected
NOAA/NOS/Coast Survey Development Laboratory
NYOFS is running operationally at NOS’s CO-OPS with hourly nowcast and four times a day 30-hour forecasts
Most model water level and current skills meet NOS standard
Data validated model for tracer concentration prediction to assist field work planning
http://co-ops.nos.noaa/NYOFS/nyofs.shtml
SummarySummary
NOAA/NOS/Coast Survey Development Laboratory
NOAA/NOS/Coast Survey Development Laboratory