Global estimates of internal tide generation rates at 1/30º resolution

Date 2018-12-04
Author(s) Falahat Saeed1, Nycander JonasORCID1, de Lavergne CasimirORCID2, 3, Roquet FabienORCID4, Madec GurvanORCID2, Vic ClémentORCID5
Affiliation(s) 1 : Department of Meteorology (MISU), Stockholm University, 114 18 Stockholm, Sweden
2 : LOCEAN Laboratory, Sorbonne Université-CNRS-IRD-MNHN, Paris F-75005, France
3 : School of Mathematics and Statistics, University of New South Wales, Sydney NSW 2052, Australia
4 : Department of Marine Sciences, University of Gothenburg, S-404 30 Gothenburg, Sweden
5 : University of Southampton, National Oceanography Centre, Southampton, United Kingdom
DOI 10.17882/58153
Publisher SEANOE
Keyword(s) tides, internal waves, ocean mixing
Abstract

The dataset contains global estimates of barotropic-to-baroclinic tidal energy conversion at 1/30-degree resolution. Three types of estimates are available:

1. Non-modal conversion rates calculated by Falahat et al. (2014) following the method of Nycander (2005). A map for each of the eight most energetic tidal constituents (M2, S2, K1, O1, N2, K2, P1, Q1) is provided.

2. Mode-by-mode conversion rates calculated by Falahat et al. (2014). A map for each of the three most energetic tidal constituents (M2, S2, K1) and each of vertical normal modes 1, 2, 3, 4, 5 and 6-10 is provided.

3. Mode-by-mode conversion rates calculated by Falahat et al. (2014), to which an ad hoc correction to eliminate negative conversion rates has been applied (following de Lavergne et al., 2019). The correction preserves basin-integrated, depth-dependent conversion rates. A map for each of the three most energetic tidal constituents (M2, S2, K1) and each of vertical normal modes 1, 2, 3, 4, 5 and 6-10 is provided.

All maps were computed using the WOCE global climatology of stratification, the ETOPO2v2 bathymetry product and the TXO6.2 atlas of barotropic tidal velocities. Detailed methods and documentation can be found in the following publications:

Nycander, J. Generation of internal waves in the deep ocean by tides. Journal of Geophysical Research 110, C10028 (2005). doi:10.1029/2004JC002487

Falahat, S., Nycander, J., Roquet, F., Moundheur, Z. Global calculation of tidal energy conversion into vertical normal modes. Journal of Physical Oceanography 44, 3225-3244 (2014). doi:10.1175/JPO-D-14-0002.1

de Lavergne, C., Falahat, S., Madec, G., Roquet, F., Nycander, J., Vic, C. Toward global maps of internal tide energy sinks. Ocean Modelling,137, 52-75 (2019). doi:10.1016/j.ocemod.2019.03.010.

Licence CC0
Data
File Size Format Processing Access
Non-modal tidal conversion by constituent 690 MB NC, NetCDF Open access
Original M2 generation by mode 709 MB NC, NetCDF Open access
Corrected K1 generation by mode 203 MB NC, NetCDF Open access
Original K1 generation by mode 317 MB NC, NetCDF Open access
Corrected M2 generation by mode 461 MB NC, NetCDF Open access
Corrected S2 generation by mode 488 MB NC, NetCDF Open access
Original S2 generation by mode 760 MB NC, NetCDF Open access
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How to cite 

Falahat Saeed, Nycander Jonas, de Lavergne Casimir, Roquet Fabien, Madec Gurvan, Vic Clément (2018). Global estimates of internal tide generation rates at 1/30º resolution. SEANOE. https://doi.org/10.17882/58153


In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :


Falahat Saeed, Nycander Jonas, Roquet Fabien, Zarroug Moundheur (2014). Global Calculation of Tidal Energy Conversion into Vertical Normal Modes. Journal of Physical Oceanography, 44(12), 3225-3244. https://doi.org/10.1175/JPO-D-14-0002.1

Nycander J. (2005). Generation of internal waves in the deep ocean by tides. Journal of Geophysical Research, 110(C10), -. https://doi.org/10.1029/2004JC002487