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


Ignore:
Timestamp:
2019-02-22T13:28:02+01:00 (18 months ago)
Author:
smueller
Comment:

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  • 2019WP/ENHANCE-12_SimonM-Tides

    v4 v5  
    2727 * module {{{bdytides}}} (source:/NEMO/trunk/src/OCE/BDY/bdytides.F90). 
    2828 
    29 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. 
     29In 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. 
    3030 
    3131=== 2. Proposed addition of an alternative set of tidal component parameters 
    3232 
    33 ''To be outlined.'' 
     33The 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. 
     34 
     35The 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. 
     36 
     37Further, the proposed revision adds long-periodic components (if selected) to the tide potential that currently only comprises the selected diurnal and semidiurnal components. 
     38 
     39For 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. 
    3440 
    3541=== 3. Proposed combination of tide-related functionality into one module in a new source-code subdirectory {{{OCE/TDE}}}