Ocean Model Current Areas
***Attention*** The NCOM regional files format
was changed on April 5, 2013 by the Navy for their better use along with the new HYCOM model.
The resolution was decreased slightly from 3 km to about 3.6 km but the grid
regions are very close to the old files. For details please see
The NCEP Global Real-Time Ocean Forecast System (RTOFS-Global) data is based on the U.S. Navy implementation of Global HYCOM.
Regional NCOM data is provided by the Naval Oceanographic Office (NAVO).
(Mouseover and click the desired area to view the valid Global Ocean Model Currents 0-72 hour forecast data)
***Attention*** NCOM Regional files are not available via the NCEP Nomads Open DAP server until late
in the week of April 15 -19. In the mean time please use the NCDDC Ocean Nomads server for archived
NCOM Data (2nd link below).
For NCOM Regional Data via ftp: http://ftp.opc.ncep.noaa.gov/grids/operational/NCOM/regional/
For archived NCOM Data: http://www.ncddc.noaa.gov/ocean-nomads/global-ncom/
For Data via Nomads GDS server: http://nomads.ncep.noaa.gov:9090/dods/ncom
For East Coast images: http://ftp.opc.ncep.noaa.gov/grids/operational/NCOM/images/
For RTOFS Global Data via ftp: http://ftp.opc.ncep.noaa.gov/grids/operational/GLOBALHYCOM/
***Attention*** NAVO's Global NCOM model has been replaced by a 1/12 deg.
eddy resolving global HYCOM model on February 27, 2013. The global
NCOM model data service will be terminated on about March 6, 2013.
NCOM data users are advised to switch to the NCEP implementation of the NAVO's
global HYCOM, known as RTOFS-Global (Global Real-Time Ocean Forecast System)
via the NCEP operational NOMADS server at:
RTOFS GLOBAL MODEL INFORMATION
The Global Real-Time Ocean Forecast System is based on NAVO's configuration of the 1/12 deg. eddy resolving
global HYCOM model and is initialized daily with NAVO generated initial conditions using the NCODA system.
RTOFS Global is forced with NCEP's operational GFS winds.
For more details see:NOAA/NCEP/MMAB RTOFS Global Web Page
REGIONAL NCOM MODEL INFORMATION
The Regional NCOM models have a resolution
of 1/36 deg. (3 km). The U.S. Navy Operational Global Ocean Model (NCOM),
developed by the Naval Research Laboratory (Barron et al, 1&2)
and maintained by the Naval Oceanographic Office, provides boundary
conditions for the regional models. The regional NCOM models found here
include the U.S. East Coast (ncom_useast), The Southern California Coast
(ncom_socal), Hawaii Coasts (ncom_relo_hawaii) and the Gulf of Mexico and
Caribaean Seas (ncom_relo_amseas).
The Navy Coupled Ocean Data Assimilation
System (NCODA) provides the data assimilation for NCOM including SSH,
SST, and in situ observations. For more information about NCOM see:
Overview by NRL or
NRL Press Release
Publications and Validation Test Report
1. Barron, C.N., A.B. Kara, H.E. Hurlburt, C.
Rowley, and L.F. Smedstad, 2004: Sea surface height predictions
from the Global Navy Coastal Ocean Model (NCOM) during 1998-2001.
J. Atmos. Oceanic Technol., 21(12), 1876-1894.
2. Barron, C.N., A.B. Kara, P.J. Martin, R.C.
Rhodes, and L.F. Smedstad, 2006: Formulation, implementation and
examination of vertical coordinate choices in the global Navy
Coastal Ocean Model (NCOM). Ocean Modeling, 11,
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