TPXO Global Tidal Models
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.
The TPXO models include complex amplitudes 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) harmonic constituents.
TPXO9 latest versions also include minor constituents: 2N2, S1, 2Q1, J1, L2, M3, MU2, NU2, OO1.
TPXO10v1 (coming soon!) besides those in TPXO9 also includes MSF, M1 and T2 tides.
You have to download latest update of OTPS(nc) to be able to work with added constituents.
TPXO models are provided at two resolutions - on 1/6 degree and on 1/30 degree grids for atlas solutions. Latest TPXO-atlases include 15 tides: M2, S2, N2, K2, K1, O1, P1, Q1, Mf, Mm, M4, MS4, MN4, 2N2, S1
TPXO models are served in binary and netcdf formats. The binary format can be read using OTPS (Fortran based) or TMD2.5 (Matlab based).
TPXO global tide models are available for academic research, and other non-commercial uses and require registration.
Read more on TPXO10-atlas (coming soon!)
To refer to our models/software in your publications please use the citation:
Check out our TPXO Web Service to get tide predictions from TPXO9-atlas at any location and time.