TPXO is a series of fully-global models of ocean barotropic tides, which best-fits, in a least-squares sense, the Laplace Tidal Equations and assimilated data. Each next model in TPXO series is based on updated bathymetry and assimilates more satellite altimetry data compared to previous versions. All TPXO global models were obtained with OTIS , the software, implementing methods described in details by Egbert, Bennett, and Foreman,1994  and further by Egbert and Erofeeva,2002.

    ALL global TPXO models include gridded harmonic constants of MSL-relative sea-surface elevations and transports/currents for eight primary (M2, S2, N2, K2, K1, O1, P1, Q1), two long period (Mf,Mm) and 3 non-linear (M4, MS4, MN4) tides. TPXO9 and TPXO10 also include 9 and 11 minor tides correspondingly.

 TPXO models are provided at two resolutions

• 1/6 degree for TPXO10, TPXO9, TPXO10v*a, TPXO9v*a

• 1/30 degree for TPXO-atlases

 TPXO models are served in two polular formats:

• binary, that can be read using OTPS (Fortran based) or TMD2.5 (Matlab based) packages

• netcdf  format 

Note: our netcdf format is different from TMD3 consolidated netcdf format

Read more on TPXO10

Read more on TPXO10-atlas

TPXO global tide models are available for academic research, and other non-commercial uses and require registration.

 HOW TO REGISTER

COMMERCIAL USE

To refer to our models/software in your publications please use the citation:

Egbert, Gary D., and Svetlana Y. Erofeeva. "Efficient inverse modeling of barotropic ocean tides." Journal of Atmospheric and Oceanic Technology 19.2 (2002): 183-204.

Check out our TPXO Web Service to get tide predictions from TPXO10-atlas at any location and time.