LCOV - code coverage report
Current view: | top level - physics/cam - tidal_diag.F90 (source / functions) |  |  | Hit | Total | Coverage
Test: | coverage.info |  | Lines: | 68 | 114 | 59.6 %
Date: | 2024-12-17 22:39:59 |  | Functions: | 3 | 3 | 100.0 %

              Line data    Source code
           1             : module tidal_diag
           2             :
           3             :   !---------------------------------------------------------------------------------
           4             :   ! Module to compute fourier coefficients for the diurnal and semidiurnal tide
           5             :   !
           6             :   ! Created by: Dan Marsh
           7             :   ! Date: 12 May 2008
           8             :   !---------------------------------------------------------------------------------
           9             :
          10             :   use shr_kind_mod,  only: r8 => shr_kind_r8
          11             :   use ppgrid,        only: pcols, pver
          12             :
          13             :   implicit none
          14             :
          15             :   private
          16             :
          17             :   ! Public interfaces
          18             :
          19             :   public :: tidal_diag_init   ! create coefficient history file variables
          20             :   public :: tidal_diag_write  ! calculate and output dignostics
          21             :   public :: get_tidal_coeffs
          22             :
          23             : contains
          24             :
          25             :   !===============================================================================
          26             :
          27     2979888 :   subroutine  tidal_diag_init()
          28             :     !-----------------------------------------------------------------------
          29             :     ! Purpose: create fourier coefficient history file variables
          30             :     !-----------------------------------------------------------------------
          31             :
          32             :     use cam_history, only: addfld, add_default, horiz_only
          33             :     use phys_control,only: phys_getopts
          34             :
          35             :     logical :: history_waccm
          36             :
          37        3072 :     call addfld ('T_24_COS',     (/ 'lev' /), 'A','K','Temperature 24hr. cos coeff.')
          38        3072 :     call addfld ('T_24_SIN',     (/ 'lev' /), 'A','K','Temperature 24hr. sin coeff.')
          39        3072 :     call addfld ('T_12_COS',     (/ 'lev' /), 'A','K','Temperature 12hr. cos coeff.')
          40        3072 :     call addfld ('T_12_SIN',     (/ 'lev' /), 'A','K','Temperature 12hr. sin coeff.')
          41        3072 :     call addfld ('T_08_COS',     (/ 'lev' /), 'A','K','Temperature  8hr. cos coeff.')
          42        3072 :     call addfld ('T_08_SIN',     (/ 'lev' /), 'A','K','Temperature  8hr. sin coeff.')
          43             :
          44        3072 :     call addfld ('U_24_COS',     (/ 'lev' /), 'A','m/s','Zonal wind 24hr. cos coeff.')
          45        3072 :     call addfld ('U_24_SIN',     (/ 'lev' /), 'A','m/s','Zonal wind 24hr. sin coeff.')
          46        3072 :     call addfld ('U_12_COS',     (/ 'lev' /), 'A','m/s','Zonal wind 12hr. cos coeff.')
          47        3072 :     call addfld ('U_12_SIN',     (/ 'lev' /), 'A','m/s','Zonal wind 12hr. sin coeff.')
          48        3072 :     call addfld ('U_08_COS',     (/ 'lev' /), 'A','m/s','Zonal wind  8hr. cos coeff.')
          49        3072 :     call addfld ('U_08_SIN',     (/ 'lev' /), 'A','m/s','Zonal wind  8hr. sin coeff.')
          50             :
          51        3072 :     call addfld ('V_24_COS',     (/ 'lev' /), 'A','m/s','Meridional wind 24hr. cos coeff.')
          52        3072 :     call addfld ('V_24_SIN',     (/ 'lev' /), 'A','m/s','Meridional wind 24hr. sin coeff.')
          53        3072 :     call addfld ('V_12_COS',     (/ 'lev' /), 'A','m/s','Meridional wind 12hr. cos coeff.')
          54        3072 :     call addfld ('V_12_SIN',     (/ 'lev' /), 'A','m/s','Meridional wind 12hr. sin coeff.')
          55        3072 :     call addfld ('V_08_COS',     (/ 'lev' /), 'A','m/s','Meridional wind  8hr. cos coeff.')
          56        3072 :     call addfld ('V_08_SIN',     (/ 'lev' /), 'A','m/s','Meridional wind  8hr. sin coeff.')
          57             :
          58        1536 :     call addfld ('PS_24_COS',    horiz_only,  'A','Pa','surface pressure 24hr. cos coeff.')
          59        1536 :     call addfld ('PS_24_SIN',    horiz_only,  'A','Pa','surface pressure 24hr. sin coeff.')
          60        1536 :     call addfld ('PS_12_COS',    horiz_only,  'A','Pa','surface pressure 12hr. cos coeff.')
          61        1536 :     call addfld ('PS_12_SIN',    horiz_only,  'A','Pa','surface pressure 12hr. sin coeff.')
          62        1536 :     call addfld ('PS_08_COS',    horiz_only,  'A','Pa','surface pressure  8hr. cos coeff.')
          63        1536 :     call addfld ('PS_08_SIN',    horiz_only,  'A','Pa','surface pressure  8hr. sin coeff.')
          64             :
          65        3072 :     call addfld ('OMEGA_24_COS', (/ 'lev' /), 'A','Pa/s','vertical pressure velocity 24hr. cos coeff.')
          66        3072 :     call addfld ('OMEGA_24_SIN', (/ 'lev' /), 'A','Pa/s','vertical pressure velocity 24hr. sin coeff.')
          67        3072 :     call addfld ('OMEGA_12_COS', (/ 'lev' /), 'A','Pa/s','vertical pressure velocity 12hr. cos coeff.')
          68        3072 :     call addfld ('OMEGA_12_SIN', (/ 'lev' /), 'A','Pa/s','vertical pressure velocity 12hr. sin coeff.')
          69        3072 :     call addfld ('OMEGA_08_COS', (/ 'lev' /), 'A','Pa/s','vertical pressure velocity  8hr. cos coeff.')
          70        3072 :     call addfld ('OMEGA_08_SIN', (/ 'lev' /), 'A','Pa/s','vertical pressure velocity  8hr. sin coeff.')
          71             :
          72        1536 :     call phys_getopts( history_waccm_out = history_waccm )
          73             :
          74        1536 :     if (history_waccm) then
          75           0 :        call add_default ('T_24_COS', 1, ' ')
          76           0 :        call add_default ('T_24_SIN', 1, ' ')
          77           0 :        call add_default ('T_12_COS', 1, ' ')
          78           0 :        call add_default ('T_12_SIN', 1, ' ')
          79           0 :        call add_default ('U_24_COS', 1, ' ')
          80           0 :        call add_default ('U_24_SIN', 1, ' ')
          81           0 :        call add_default ('U_12_COS', 1, ' ')
          82           0 :        call add_default ('U_12_SIN', 1, ' ')
          83           0 :        call add_default ('V_24_COS', 1, ' ')
          84           0 :        call add_default ('V_24_SIN', 1, ' ')
          85           0 :        call add_default ('V_12_COS', 1, ' ')
          86           0 :        call add_default ('V_12_SIN', 1, ' ')
          87           0 :        call add_default ('PS_24_COS', 1, ' ')
          88           0 :        call add_default ('PS_24_SIN', 1, ' ')
          89           0 :        call add_default ('PS_12_COS', 1, ' ')
          90           0 :        call add_default ('PS_12_SIN', 1, ' ')
          91             :     endif
          92             :
          93        1536 :     return
          94             :
          95        1536 :   end subroutine tidal_diag_init
          96             :
          97             :   !===============================================================================
          98             :
          99     1489176 :   subroutine  tidal_diag_write(state)
         100             :
         101             :     !-----------------------------------------------------------------------
         102             :     ! Purpose: calculate fourier coefficients and save to history files
         103             :     !-----------------------------------------------------------------------
         104        1536 :     use cam_history,   only: outfld, hist_fld_active
         105             :     use physics_types, only: physics_state
         106             :
         107             :     implicit none
         108             :
         109             :     !-----------------------------------------------------------------------
         110             :     !
         111             :     ! Arguments
         112             :     !
         113             :     type(physics_state), intent(in) :: state
         114             :     !
         115             :     !---------------------------Local workspace-----------------------------
         116             :
         117             :     integer  :: lchnk
         118             :
         119             :     real(r8) :: dcoef(6)
         120             :     integer :: ncol
         121             :
         122             :     !-----------------------------------------------------------------------
         123             :
         124     1489176 :     lchnk = state%lchnk
         125     1489176 :     ncol = state%ncol
         126             :
         127     1489176 :     call get_tidal_coeffs( dcoef )
         128             :
         129     1489176 :     if ( hist_fld_active('T_24_COS') .or. hist_fld_active('T_24_SIN') ) then
         130           0 :        call outfld( 'T_24_SIN', state%t(:ncol,:)*dcoef(1), ncol, lchnk )
         131           0 :        call outfld( 'T_24_COS', state%t(:ncol,:)*dcoef(2), ncol, lchnk )
         132             :     endif
         133     1489176 :     if ( hist_fld_active('T_12_COS') .or. hist_fld_active('T_12_SIN') ) then
         134           0 :        call outfld( 'T_12_SIN', state%t(:ncol,:)*dcoef(3), ncol, lchnk )
         135           0 :        call outfld( 'T_12_COS', state%t(:ncol,:)*dcoef(4), ncol, lchnk )
         136             :     endif
         137     1489176 :     if ( hist_fld_active('T_08_COS') .or. hist_fld_active('T_08_SIN') ) then
         138           0 :        call outfld( 'T_08_SIN', state%t(:ncol,:)*dcoef(5), ncol, lchnk )
         139           0 :        call outfld( 'T_08_COS', state%t(:ncol,:)*dcoef(6), ncol, lchnk )
         140             :     endif
         141             :
         142     1489176 :     if ( hist_fld_active('U_24_COS') .or. hist_fld_active('U_24_SIN') ) then
         143           0 :        call outfld( 'U_24_SIN', state%u(:ncol,:)*dcoef(1), ncol, lchnk )
         144           0 :        call outfld( 'U_24_COS', state%u(:ncol,:)*dcoef(2), ncol, lchnk )
         145             :     endif
         146     1489176 :     if ( hist_fld_active('U_12_COS') .or. hist_fld_active('U_12_SIN') ) then
         147           0 :        call outfld( 'U_12_SIN', state%u(:ncol,:)*dcoef(3), ncol, lchnk )
         148           0 :        call outfld( 'U_12_COS', state%u(:ncol,:)*dcoef(4), ncol, lchnk )
         149             :     endif
         150     1489176 :     if ( hist_fld_active('U_08_COS') .or. hist_fld_active('U_08_SIN') ) then
         151           0 :        call outfld( 'U_08_SIN', state%u(:ncol,:)*dcoef(5), ncol, lchnk )
         152           0 :        call outfld( 'U_08_COS', state%u(:ncol,:)*dcoef(6), ncol, lchnk )
         153             :     endif
         154             :
         155     1489176 :     if ( hist_fld_active('V_24_COS') .or. hist_fld_active('V_24_SIN') ) then
         156           0 :        call outfld( 'V_24_SIN', state%v(:ncol,:)*dcoef(1), ncol, lchnk )
         157           0 :        call outfld( 'V_24_COS', state%v(:ncol,:)*dcoef(2), ncol, lchnk )
         158             :     endif
         159     1489176 :     if ( hist_fld_active('V_12_COS') .or. hist_fld_active('V_12_SIN') ) then
         160           0 :        call outfld( 'V_12_SIN', state%v(:ncol,:)*dcoef(3), ncol, lchnk )
         161           0 :        call outfld( 'V_12_COS', state%v(:ncol,:)*dcoef(4), ncol, lchnk )
         162             :     endif
         163     1489176 :     if ( hist_fld_active('V_08_COS') .or. hist_fld_active('V_08_SIN') ) then
         164           0 :        call outfld( 'V_08_SIN', state%v(:ncol,:)*dcoef(5), ncol, lchnk )
         165           0 :        call outfld( 'V_08_COS', state%v(:ncol,:)*dcoef(6), ncol, lchnk )
         166             :     endif
         167             :
         168     1489176 :     if ( hist_fld_active('PS_24_COS') .or. hist_fld_active('PS_24_SIN') ) then
         169           0 :        call outfld( 'PS_24_SIN', state%ps(:ncol)*dcoef(1), ncol, lchnk )
         170           0 :        call outfld( 'PS_24_COS', state%ps(:ncol)*dcoef(2), ncol, lchnk )
         171             :     endif
         172     1489176 :     if ( hist_fld_active('PS_12_COS') .or. hist_fld_active('PS_12_SIN') ) then
         173           0 :        call outfld( 'PS_12_SIN', state%ps(:ncol)*dcoef(3), ncol, lchnk )
         174           0 :        call outfld( 'PS_12_COS', state%ps(:ncol)*dcoef(4), ncol, lchnk )
         175             :     endif
         176     1489176 :     if ( hist_fld_active('PS_08_COS') .or. hist_fld_active('PS_08_SIN') ) then
         177           0 :        call outfld( 'PS_08_SIN', state%ps(:ncol)*dcoef(5), ncol, lchnk )
         178           0 :        call outfld( 'PS_08_COS', state%ps(:ncol)*dcoef(6), ncol, lchnk )
         179             :     endif
         180             :
         181     1489176 :     if ( hist_fld_active('OMEGA_24_COS') .or. hist_fld_active('OMEGA_24_SIN') ) then
         182           0 :        call outfld( 'OMEGA_24_SIN', state%omega(:ncol,:)*dcoef(1), ncol, lchnk )
         183           0 :        call outfld( 'OMEGA_24_COS', state%omega(:ncol,:)*dcoef(2), ncol, lchnk )
         184             :     endif
         185     1489176 :     if ( hist_fld_active('OMEGA_12_COS') .or. hist_fld_active('OMEGA_12_SIN') ) then
         186           0 :        call outfld( 'OMEGA_12_SIN', state%omega(:ncol,:)*dcoef(3), ncol, lchnk )
         187           0 :        call outfld( 'OMEGA_12_COS', state%omega(:ncol,:)*dcoef(4), ncol, lchnk )
         188             :     endif
         189     1489176 :     if ( hist_fld_active('OMEGA_08_COS') .or. hist_fld_active('OMEGA_08_SIN') ) then
         190           0 :        call outfld( 'OMEGA_08_SIN', state%omega(:ncol,:)*dcoef(5), ncol, lchnk )
         191           0 :        call outfld( 'OMEGA_08_COS', state%omega(:ncol,:)*dcoef(6), ncol, lchnk )
         192             :     endif
         193             :
         194     1489176 :     return
         195             :
         196     1489176 :   end subroutine tidal_diag_write
         197             :
         198             :   !===============================================================================
         199     2978352 :   subroutine get_tidal_coeffs( dcoef )
         200             :
         201             :     !-----------------------------------------------------------------------
         202             :     ! Purpose: calculate fourier coefficients
         203             :     !-----------------------------------------------------------------------
         204             :
         205     1489176 :     use time_manager,  only: get_curr_date
         206             :     use physconst, only: pi, cday
         207             :
         208             :     real(r8), intent(out) :: dcoef(6)
         209             :
         210             :  !  variables to calculate tidal coeffs
         211             :     real(r8), parameter :: pi_x_2 = 2._r8*pi
         212             :     real(r8), parameter :: pi_x_4 = 4._r8*pi
         213             :     real(r8), parameter :: pi_x_6 = 6._r8*pi
         214             :     integer  :: year, month
         215             :     integer  :: day              ! day of month
         216             :     integer  :: tod              ! time of day (seconds past 0Z)
         217             :     real(r8) :: gmtfrac
         218             :
         219             :  !  calculate multipliers for Fourier transform in time (tidal analysis)
         220     2978352 :     call get_curr_date(year, month, day, tod)
         221     2978352 :     gmtfrac = tod / cday
         222             :
         223     2978352 :     dcoef(1) = 2._r8*sin(pi_x_2*gmtfrac)
         224     2978352 :     dcoef(2) = 2._r8*cos(pi_x_2*gmtfrac)
         225     2978352 :     dcoef(3) = 2._r8*sin(pi_x_4*gmtfrac)
         226     2978352 :     dcoef(4) = 2._r8*cos(pi_x_4*gmtfrac)
         227     2978352 :     dcoef(5) = 2._r8*sin(pi_x_6*gmtfrac)
         228     2978352 :     dcoef(6) = 2._r8*cos(pi_x_6*gmtfrac)
         229             :
         230     2978352 :   end subroutine get_tidal_coeffs
         231             :
         232             : end module tidal_diag
         233             :

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