Changes between Initial Version and Version 1 of Ticket #896


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Timestamp:
09/10/21 01:37:08 (4 years ago)
Author:
arango
Comment:

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  • Ticket #896

    • Property Resolution → Done
    • Property Status new → closed

  • Ticket #896 – Description

    initial v1  
    6666   TIME_REF   =  20050101.5d0               ! yyyymmdd.dd
    6767}}}
    68  Usually, '''tide_start = 0''' implies that the zero-phase's tidal forcing date is the same as the application reference date '''time_ref'''. ROMS does not know how to check if it is the case.  Thus, it is assumed that the user was careful when configuring their application.
     68 Usually, '''tide_start = 0''' implies that the zero-phase tidal forcing date is the same as the application reference date '''time_ref'''. ROMS does not know how to check if it is the case.  Thus, it is assumed that the user was careful when configuring their application.
    6969
    7070 In this case, ROMS will report to standard output:
    … …  
    7777}}}
    7878
     79This capability was also added to the '''ADM''', '''TLM''', and '''RPM''' pressure gradient routines. However, I noticed that it slows the 4D-Var algorithm convergence.  I need to test in other applications.
     80
     81I look forward to advanced users helping us test the TGF implementation in their tide forced applications.
     82
    7983----
    8084
    … …  
    8589
    8690As expected, the '''TGF''' makes very small corrections to the boundary tidal forcing.  It implies that the tide boundary forcing is well calibrated for this application. Users will need to activate both tidal forcings ('''SSH_TIDES''', '''UV_TIDES''', '''TIDE_GENERATING_FORCES''').  The '''ATM_PRESS''' is activated for all solutions.
     91
     92
     93----
     94
     95'''WARNINGS:'''
     96
     97* All the standard input files ('''roms_*.in''') in the repositories were modified to add the '''Lnodal''' input switch for the '''TGF''' harmonics:
     98{{{
     99! If tide generating forces, set switch (T/F) to apply an 18.6-year lunar
     100! nodal correction to equilibrium tide constituents.
     101
     102      Lnodal =  T
     103}}}
     104
     105* The file '''varinfo.dat''' was updated to include the '''zero_phase_date''' metadata:
     106 {{{
     107'zero_phase_date'                                  ! Input
     108  'tidal reference date for zero phase'
     109  'days as %Y%m%d.%f'                              ! YYYYMMDD.dddd
     110  'nulvar'
     111  'nulvar'
     112  'idTref'
     113  'nulvar'
     114  1.0d0
     115}}}
    87116
    88117----