ADCIRC Tidal Databases

The Western North Atlantic, Caribbean and Gulf of Mexico Tidal Databases cover all waters west of the 60 deg W Meridian and east of the North American continent.  They include the M2, S2, N2, K2, O1, K1, Q1, M4, M6 and STEADY tidal constituents. All phases are relative to the Greenwich Meridian.  The accuracies of the nonlinearly generated constituents (STEADY, M4, M6) have not been verified and therefore should be used with considerable caution. Included in each archive is a grid file and Fortran source code that extracts all constituents at user specified locations. Three versions of the tidal database are available:

Version ec_95d was completed in 1995 on a grid consisting of 31,435 nodes.  It contains elevations and depth-averaged velocities.  The database has been verified using tidal elevation data from over 65 observational stations throughout the domain.  The database is packaged as a 8 Mbytes zip archive.

Version ec2001_v2d was completed in 2001 on a grid consisting of 254,565 nodes.  It contains elevations only. This database has been verified using tidal elevation data from over 100 observational stations throughout the domain.  Verification and use of this database is described in an HTML report and a longer PDF
report
.  The database is packaged as a 34 Mbytes zip archive

Version ec2001_v2e a slightly updated version of ec2001_v2d with 254,565 nodes.  It contains elevations and depth-averaged velocities.  It is packaged as a 76 Mbytes zip archive.

The Eastern Pacific Tidal Database covers waters along the Northern Mexican Coast, the US West Coast, the Canadian West Coast and the Alaskan South Coast.  It includes M2, S2, N2, K2, O1, K1, P1, Q1, M4, M6 and STEADY tidal constituents.  All phases are relative to the Greenwich Meridian.  The accuracies of the nonlinearly generated constituents (STEADY, M4, M6) have not been verified and therefore should be used with considerable caution.  Included in each archive is a grid file and Fortran source code that extracts all constituents at user specified locations.

Version wc_2003 was completed in 2003. The grid contains 272,913 nodes. The database includes elevations and depth-averaged velocities and is packaged as a 89 Mbytes zip archive. Verification and use of this database is described in a PDF report.


Support for the development of these databases has been provided by the US Army Corps of Engineers. They are made available free of charge for use as boundary conditions for local area circulation models and are not intended for navigational purposes. The authors and the US Army Corps of Engineers assume no responsibility for their accuracy.