Four systems forecasting mid-Atlantic bight ocean circulation have been developed under MARACOOS: three dynamical data-assimilative models with different domain configurations, numerics, data inputs and assimilation methodologies (1-3 below), and one statistically-based surface current system using HF-RADAR velocity data (4). Additionally a fifth model highlighting storm surge is linked below.
-
Rutgers Ocean Modeling Regional Forecast (ROMS & ESPRESSO : covers the Mid-Atlantic Bight from the center of Cape Cod southward to Cape Hatters, from the coast to beyond the shelf break and shelf/slope front.
-
University of Massachusetts Dartmouth Ocean Forecasts (HOPS): covers from Cape Hatteras to Newfoundland and offshore to the Gulf Stream ring and meander region
-
Stevens Institute of Technology Ocean Forecasts (NYHOPS): covers many of the bays and harbors of the New York Bight including Long Island sound, NY Harbor and the Hudson River
-
University of Connecticut Ocean Forecasts (STPS): covers the Mid-Atlantic Bight
-
Stevens Insitute of Technology Storm Surge Forecast: covers the immediate coastlines, bays and rivers of the Mid-Atlantic Bight
Comparisons of the first three dynamical models shown above are shown in the table below.
MARACOOS Dynamic Models: Comparison and Current Status
|
|
|
UMass/HOPS
|
Stevens/NYHOPS
|
Rutgers/ROMS
|
|
CONFIGURATION |
resolution |
15 km
16 sigma-levels |
50 m to 11 km
10 sigma-levels |
5 km
36 s-levels |
|
|
domain |
Cape Hatteras to Grand Banks, Gulf of Maine, Gulf Stream |
MD to Nantucket shelf h<200m; high resolution NY Harbor |
Cape Hatteras to Nantucket Shoals and Slope Sea |
|
|
model code home |
Link |
Link |
Link |
|
EXTERNAL FORCING |
meteorology |
NCEP GFS 50 km
6-hourly, 7 days |
NCEP NAM 12 km
3-hourly; 3 days |
NCEP NAM 12 km
3-hourly; 3 days |
|
|
rivers |
no |
NOAA AHPS 6-hourly forecast |
USGS daily observed |
|
|
urban freshwater |
no |
280 point sources |
no |
|
|
tides |
no |
yes
EastCoast2001 Mukai et al. 2002 |
yes
EastCoast2001 Mukai et al. 2002 |
|
|
subtidal open boundary conditions |
GS ring and front analysis feature model, SST, and dynamic adjustment (Brown et al. 2007a,b) |
subtidal sea level from NOAA ETSURGE , temp/salt from World Ocean Atlas |
Global 1/12 deg HyCOM with NCODA SSH/SST/Argo assimilation (Chassignet et al. 2009) |
|
ASSIMILATION |
method |
sequential Optimal Interpolation
Brown et al. 2007a,b |
sequential Optimal Interpolation |
4D variational strong constraint
Zhang et al. 2010 |
|
REAL-TIME FORECAST |
|
since Mar 2009 |
since Jan 2007 |
since Sep 2009 |
|
|
cycle interval |
7 days |
1 day |
1 day |
|
|
duration |
5 days |
2 days |
3 days |
|
OUTPUT |
data sent to EDS |
yes |
yes |
yes |
|
|
CF-compliant output data server |
Link |
Link |
Link |
|
|
numeric output interval |
3-hour snapshots |
10-minute averages |
2-hour snapshots
2-hour averages |
|
|
online browse plots |
Link |
Link |
Link |
|
|
ncWMS interactive plots |
Link |
Link |
Link |
|
|
google earth overlays |
|
Link |
Link |
|
CONTACT PERSON |
science |
Avijit Gangopadhyay |
Alan Blumberg |
John Wilkin |
|
|
model output data server |
Andre Schmidt |
Nickitas Georgas |
David Robertson |