++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The DTU10 global ocean tide model From: DTU Space Institut for Rumforskning og-teknologi Danmarks Tekniske Universitet DTU Space National Space Institute Technical University of Denmark Juliane Maries Vej 30 Building Rockefeller 2100  Copenhagen, Denmark ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The DTU10 stands for global ocean tide model derived at DTU Space in 2010 using response method for residual analysis of multi-missions altimeter data. The extended global tidal model FES2004 (Finite Element Solutions) was used as a reference model. The model is an empirical ocean tide model model which means that it does not include tidal currents. Both phase A and four years of phase B data from multi-mission altimetry measurements (TOPEX/POSEIDON and Jason-1/2) are applied for the development of the new global tide model. The combined altimeter datasets from ERS-2, Geosat Follow On (GFO) and Envisat is used below and above 66°S and 66°N to extend the coverage at high latitudes. Outside the coverage of altimetry the model relaxes to FES2004. The Ocean tide model is extended onto land in order to enable proper interpolation close to the coast. In case a mask is used we suggest that you use a detailed mask like DTU10BAT or use the mask provided in the BATHYMETRY_MASK directory. The performance of the model can be seen: Yongcun Cheng, Ole Baltazar Andersen, (2010). Improvement in global ocean tide model in shallow water regions. Poster, SV.1-68 45, OSTST, Lisbon, Oct.18-22. The pdf-version of this poster is available with the model Detailed description on DTU10 will be published shortly Yongcun Cheng, Ole Baltazar Andersen, (2010). A new global ocean tide model and its improvements in shallow waters and the Arctic regions. Journal of Geophysical research. In preparation. -------------------------------------------------------------- -------------------------------------------------------------- The model is available at the anonymous ftp ftp.space.dtu.dk/pub/DTU10/TIDE_MODEL Ocean tide version is available in the OCEAN_TIDE_GRIDS directory Elastic Ocean tide (Ocean+Load) tide version is available in the OCEAN+LOAD_TIDE_GRIDS directory DTU10 consists of M2, S2, N2, K2, K1, O1, P1 and Q1 tidal constituents. The S1,M4 tide is from GOT4.7 of R.Ray. Accordingly,the file pattern in the GOT47_FORMAT directory is 'xx.d' for ocean tides which has similar format to GOT4.7. 'xx' stands for any of the constituents listed above Alternatively, the file pattern in the FES2004_FORMAT directory is 'xxDTU10.asc' which has similar format to FES2004, so the data files can also be used with the FES2004 driver software. The resolution of 7.5’x7.5’is identical to that of FES2004 which was used as reference model for the residual tide response analysis. The grid files can be used to pridict the tidal height at given time and positions using i.e. the Perth3 software from R. Ray. The DTU10 driver software can be found in the ../software directory. The original software is available at the anonymous ftp ftp://iliad.gsfc.nasa.gov/ray/GOT4.7/ -------------------------------------------------------------- -------------------------------------------------------------- The development of DTU10 was funded by the :):):):):):):):) The DTU10 global ocean tide model is distributed for research purporses and there are no warranties for a particular purpose or use. By: Yongcun Cheng (cych@space.dtu.dk), Ole Baltazar Andersen(oa@space.dtu.dk) November, 2010