Changes between Version 4 and Version 5 of 2019WP/ENHANCE-12_SimonM-Tides

Timestamp:

2019-02-22T13:28:02+01:00 (4 years ago)

Author:

smueller

Comment:

--

2019WP/ENHANCE-12_SimonM-Tides

@@ -27 +27 @@
  * module {{{bdytides}}} (source:/NEMO/trunk/src/OCE/BDY/bdytides.F90).
 
-In addition, the parameters for the currently selectable tidal constituents are supplied via an include file (source:/NEMO/trunk/src/OCE/SBC/tide.h90). Further, the computation of the surface pressure gradient (source:/NEMO/trunk/src/OCE/DYN/dynspg.F90 and source:NEMO/trunk/src/OCE/DYN/dynspg_ts.F90) with activated tidal potential as well as the harmonic analysis (module {{{diaharm}}}, source:/NEMO/trunk/src/OCE/DIA/diaharm.F90) call subroutines and access variables of the modules listed above.
+In addition, the parameters for the current set of selectable tidal constituents are supplied via an include file (source:/NEMO/trunk/src/OCE/SBC/tide.h90). Further, the computation of the surface pressure gradient (source:/NEMO/trunk/src/OCE/DYN/dynspg.F90 and source:NEMO/trunk/src/OCE/DYN/dynspg_ts.F90) with activated tidal potential as well as the harmonic analysis (module {{{diaharm}}}, source:/NEMO/trunk/src/OCE/DIA/diaharm.F90) call subroutines and access variables of the modules listed above.
 
 === 2. Proposed addition of an alternative set of tidal component parameters
 
-''To be outlined.''
+The proposed revision of the tidal-forcing functionality of NEMO allows for the possibility to apply tidal boundary conditions that are derived from the [https://www.aviso.altimetry.fr/en/data/products/auxiliary-products/global-tide-fes.html FES2014 version of the Global Tide FES data product], which provides tide elevations, currents and loadings for 34 tidal components (https://www.aviso.altimetry.fr/en/data/products/auxiliary-products/global-tide-fes.html). It includes the addition of an alternative tidal-component parameter set that extends the currently available set of tidal components (19 components; source:/NEMO/trunk/src/OCE/SBC/tide.h90) to correspond to the full range of components available in the FES2014 data product.
+
+The coefficients for the proposed new parameter set have already been compiled, and the coefficients relating to the equilibrium tide amplitudes of all components (including those of the 19 components available in the current model version) have newly been recomputed in a form that is compatible with the conventions used for the existing tidal forcing implementation.
+
+Further, the proposed revision adds long-periodic components (if selected) to the tide potential that currently only comprises the selected diurnal and semidiurnal components.
+
+For reproducibility of the current tidal forcing, a new namelist parameter, `ln_tide_var`, is proposed to permit the combined selection of tidal parameter set and variant of tide-potential computation; the proposed default is the revised parameter set and the inclusion of long-periodic tides in the tide-potential computation.
 
 === 3. Proposed combination of tide-related functionality into one module in a new source-code subdirectory {{{OCE/TDE}}}