Gravitational effect of ocean and atmospheric tides
Here we provide ocean and atmospheric tide models for easy consideration in precise satellite orbit determination. The gravitational effect of tides including loading effects at a given time can be represented as corrections to the Stokes coefficients of a spherical harmonics expansion. This requires not only an atlas of selected major tidal consitutents but also a calculation rule to complement all frequency lines. This can be done by interpolation using an admittance matrix. For this purpose, a file format and an algorithm are defined here. All required information can be found in the README. We provide also reference implementations in MATLAB, Python and Fortran.
The following models are currently available
- FES2014b (Lyard et al. 2021)
- EOT20 (Hart-Davis et al. 2021)
- EOT11a (Savcenko et al. 2012)
- TiME22 (Sulzbach et al. 2022)
- TiME22 atmospheric tides (Balidakis et al. 2022)
- ... more models will be published in the future.
Please cite the models accordingly and respect their license.
Download
- README.pdf: format description and evaluation algorithm
- FTP-Server: directory with README, all models, and software
- oceanAndAtmosphericTides.zip: all in one file
Conversion of other tide models from gridded data
If you want to convert your own ocean tide model from NETCDF data you can use our GROOPS software (https://github.com/groops-devs/groops). A example script with description is provided at our FTP-Server.
Steyrergasse 30/III
8010 Graz
Austria
Tel: +43 316 873-6359
Fax: +43 316 873-6845
mayer-guerr@tugraz.at
Felix Öhlinger
Steyrergasse 30/III
8010 Graz
Austria
Tel: +43/316/873- 6333
Fax: +43/316/873-6845
felix.oehlinger@tugraz.at