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CONTENTS

Configuration Files

This directory contains the different configuration files to compute:

NOTE

The configuration files are supplied for use with the tree as described below.

data/
└── fes2014
    ├── eastward_velocity
    ├── load_tide
    ├── northward_velocity
    ├── ocean_tide
    └── ocean_tide_extrapolated

Database Contents

The various sub directories located here are empty. Indeed, data necessary to calculate the different tides are not distributed here, but on the AVISO website. You will find on the AVISO FTP server authenticated the following archives for filling empty directories:

  • eastward_velocity.tar.xz
  • load_tide.tar.xz
  • northward_velocity.tar.xz
  • ocean_tide.tar.xz
  • ocean_tide_extrapolated.tar.xz

To allow you to download as small as possible archives, the archives have been compressed using the xz program using the LZMA2 compression algorithms. To decompress the archive, you must use this command or 7-zip if you use Windows.

NOTE

The decompression of these archives will need 193 MiB of memory.

Database description

The FES2014 tides database includes 3 components: Tide elevations, currents and loading. Each component contains 34 tidal components:

2N₂, J₁, K₁, K₂, L₂, MKS₂, MN₄, MS₄, Mf, Mm, Msf, Msqm, Mtm, M₂, M₃, M₄, M₆, M₈, N₂, N₄, O₁, P₁, P₁, R₂, Sa, Ssa, S₁, S₂, S₄, T₂, µ₂, ε₂, λ₂, ν₂

Tide Elevations

FES2014b ocean tide model is distributed; this model has been computed using the new FES2014 tidal loading grids. Two versions are available:

  • Non extrapolated version contained in the ocean_tide.tar.xz archive: the model is defined on a 1/16° grid directly interpolated from the finite element native grid of the model.

  • Extrapolated version contained in the ocean_tide_extrapolated.tar.xz: the above version has been extrapolated on the coasts in order to cover nearly entirely the coastal regions. The procedure is a simple extrapolation applied on 10 pixels and using mean values when necessary, it cannot be accurate enough in some regions.

Tide Currents

Tidal currents derived from FES2014a models are delivered on the 1/16° grid, directly interpolated from the finite element native grid. No extrapolation is done on the coasts of the currents. This database is contained in two separate archives: eastward_velocity.tar.xz and northward_velocity.tar.xz.

Tide Loading

The new FES2014a tide loading is supplied on the same 1/16° grid. This dataset is provided into the load_tide.tar.xz archive.