[4015] | 1 | MODULE crsini |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE crsini *** |
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| 4 | !! Manage the grid coarsening module initialization |
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| 5 | !!====================================================================== |
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| 6 | !! History 2012-05 (J. Simeon, G. Madec, C. Ethe, C. Calone) Original code |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | |
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[5836] | 9 | !!---------------------------------------------------------------------- |
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| 10 | !! crs_init : |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | USE par_kind, ONLY: wp |
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[7646] | 13 | USE par_oce ! For parameter jpi,jpj |
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[6140] | 14 | USE dom_oce ! For parameters in par_oce |
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[5836] | 15 | USE crs ! Coarse grid domain |
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[4015] | 16 | USE phycst, ONLY: omega, rad ! physical constants |
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| 17 | USE crsdom |
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| 18 | USE crsdomwri |
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| 19 | USE crslbclnk |
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[5836] | 20 | ! |
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| 21 | USE iom |
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| 22 | USE in_out_manager |
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[4015] | 23 | USE lib_mpp |
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| 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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[5836] | 28 | PUBLIC crs_init ! called by nemogcm.F90 module |
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[4015] | 29 | |
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[5836] | 30 | !!---------------------------------------------------------------------- |
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[9598] | 31 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[5215] | 32 | !! $Id$ |
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[10068] | 33 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[5836] | 34 | !!---------------------------------------------------------------------- |
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[4015] | 35 | CONTAINS |
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| 36 | |
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[12928] | 37 | SUBROUTINE crs_init( Kmm ) |
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[4015] | 38 | !!------------------------------------------------------------------- |
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| 39 | !! *** SUBROUTINE crs_init |
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| 40 | !! ** Purpose : Initialization of the grid coarsening module |
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| 41 | !! 1. Read namelist |
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| 42 | !! X2. MOVE TO crs_dom.F90 Set the domain definitions for coarse grid |
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| 43 | !! a. Define the coarse grid starting/ending indices on parent grid |
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| 44 | !! Here is where the T-pivot or F-pivot grids are discerned |
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| 45 | !! b. TODO. Include option for north-centric or equator-centric binning. |
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| 46 | !! (centered only for odd reduction factors; even reduction bins bias equator to the south) |
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| 47 | !! 3. Mask and mesh creation. => calls to crsfun |
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| 48 | !! a. Use crsfun_mask to generate tmask,umask, vmask, fmask. |
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| 49 | !! b. Use crsfun_coordinates to get coordinates |
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| 50 | !! c. Use crsfun_UV to get horizontal scale factors |
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| 51 | !! d. Use crsfun_TW to get initial vertical scale factors |
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| 52 | !! 4. Volumes and weights jes.... TODO. Updates for vvl? Where to do this? crsstp.F90? |
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| 53 | !! a. Calculate initial coarse grid box volumes: pvol_T, pvol_W |
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| 54 | !! b. Calculate initial coarse grid surface-averaging weights |
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| 55 | !! c. Calculate initial coarse grid volume-averaging weights |
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| 56 | !! |
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| 57 | !! X5. MOVE TO crs_dom_wri.F90 Using iom_rstput output the initial meshmask. |
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| 58 | !! ?. Another set of "masks" to generate |
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| 59 | !! are the u- and v- surface areas for U- and V- area-weighted means. |
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| 60 | !! Need to put this somewhere in section 3? |
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| 61 | !! jes. What do to about the vvl? GM. could separate the weighting (denominator), so |
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| 62 | !! output C*dA or C*dV as summation not mran, then do mean (division) at moment of output. |
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| 63 | !! As is, crsfun takes into account vvl. |
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[6140] | 64 | !! Talked about pre-setting the surface array to avoid IF/ENDIF and division. |
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[4015] | 65 | !! But have then to make that preset array here and elsewhere. |
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| 66 | !! that is called every timestep... |
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| 67 | !! |
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| 68 | !! - Read in pertinent data ? |
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| 69 | !!------------------------------------------------------------------- |
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[12928] | 70 | INTEGER, INTENT(in) :: Kmm ! time level index |
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| 71 | ! |
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[4015] | 72 | INTEGER :: ji,jj,jk ! dummy indices |
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| 73 | INTEGER :: ierr ! allocation error status |
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[4154] | 74 | INTEGER :: ios ! Local integer output status for namelist read |
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[9125] | 75 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: ze3t, ze3u, ze3v, ze3w |
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[4015] | 76 | |
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[9169] | 77 | NAMELIST/namcrs/ nn_factx, nn_facty, nn_binref, ln_msh_crs, nn_crs_kz, ln_crs_wn |
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[4015] | 78 | !!---------------------------------------------------------------------- |
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| 79 | ! |
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| 80 | !--------------------------------------------------------- |
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| 81 | ! 1. Read Namelist file |
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| 82 | !--------------------------------------------------------- |
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| 83 | ! |
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[4154] | 84 | READ ( numnam_ref, namcrs, IOSTAT = ios, ERR = 901) |
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[12178] | 85 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcrs in reference namelist' ) |
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[4154] | 86 | READ ( numnam_cfg, namcrs, IOSTAT = ios, ERR = 902 ) |
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[12178] | 87 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namcrs in configuration namelist' ) |
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[4624] | 88 | IF(lwm) WRITE ( numond, namcrs ) |
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[4154] | 89 | |
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[4015] | 90 | IF(lwp) THEN |
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| 91 | WRITE(numout,*) |
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[9168] | 92 | WRITE(numout,*) 'crs_init : Initializing the grid coarsening module' |
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| 93 | WRITE(numout,*) '~~~~~~~~' |
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| 94 | WRITE(numout,*) ' Namelist namcrs ' |
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| 95 | WRITE(numout,*) ' coarsening factor in i-direction nn_factx = ', nn_factx |
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| 96 | WRITE(numout,*) ' coarsening factor in j-direction nn_facty = ', nn_facty |
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| 97 | WRITE(numout,*) ' bin centering preference nn_binref = ', nn_binref |
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[9169] | 98 | WRITE(numout,*) ' create a mesh file (=T) ln_msh_crs = ', ln_msh_crs |
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[9168] | 99 | WRITE(numout,*) ' type of Kz coarsening (0,1,2) nn_crs_kz = ', nn_crs_kz |
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[12928] | 100 | WRITE(numout,*) ' ww coarsened or computed using hdiv ln_crs_wn = ', ln_crs_wn |
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[4015] | 101 | ENDIF |
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| 102 | |
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| 103 | rfactx_r = 1. / nn_factx |
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| 104 | rfacty_r = 1. / nn_facty |
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| 105 | |
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| 106 | !--------------------------------------------------------- |
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| 107 | ! 2. Define Global Dimensions of the coarsened grid |
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| 108 | !--------------------------------------------------------- |
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| 109 | CALL crs_dom_def |
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| 110 | |
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| 111 | !--------------------------------------------------------- |
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| 112 | ! 3. Mask and Mesh |
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| 113 | !--------------------------------------------------------- |
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| 114 | |
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| 115 | ! Set up the masks and meshes |
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| 116 | |
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| 117 | ! 3.a. Get the masks |
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| 118 | |
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| 119 | CALL crs_dom_msk |
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| 120 | |
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| 121 | |
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| 122 | ! 3.b. Get the coordinates |
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| 123 | ! Odd-numbered reduction factor, center coordinate on T-cell |
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| 124 | ! Even-numbered reduction factor, center coordinate on U-,V- faces or f-corner. |
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| 125 | ! |
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| 126 | IF ( nresty /= 0 .AND. nrestx /= 0 ) THEN |
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| 127 | CALL crs_dom_coordinates( gphit, glamt, 'T', gphit_crs, glamt_crs ) |
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| 128 | CALL crs_dom_coordinates( gphiu, glamu, 'U', gphiu_crs, glamu_crs ) |
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| 129 | CALL crs_dom_coordinates( gphiv, glamv, 'V', gphiv_crs, glamv_crs ) |
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| 130 | CALL crs_dom_coordinates( gphif, glamf, 'F', gphif_crs, glamf_crs ) |
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| 131 | ELSEIF ( nresty /= 0 .AND. nrestx == 0 ) THEN |
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| 132 | CALL crs_dom_coordinates( gphiu, glamu, 'T', gphit_crs, glamt_crs ) |
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| 133 | CALL crs_dom_coordinates( gphiu, glamu, 'U', gphiu_crs, glamu_crs ) |
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| 134 | CALL crs_dom_coordinates( gphif, glamf, 'V', gphiv_crs, glamv_crs ) |
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| 135 | CALL crs_dom_coordinates( gphif, glamf, 'F', gphif_crs, glamf_crs ) |
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| 136 | ELSEIF ( nresty == 0 .AND. nrestx /= 0 ) THEN |
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| 137 | CALL crs_dom_coordinates( gphiv, glamv, 'T', gphit_crs, glamt_crs ) |
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| 138 | CALL crs_dom_coordinates( gphif, glamf, 'U', gphiu_crs, glamu_crs ) |
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| 139 | CALL crs_dom_coordinates( gphiv, glamv, 'V', gphiv_crs, glamv_crs ) |
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| 140 | CALL crs_dom_coordinates( gphif, glamf, 'F', gphif_crs, glamf_crs ) |
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| 141 | ELSE |
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| 142 | CALL crs_dom_coordinates( gphif, glamf, 'T', gphit_crs, glamt_crs ) |
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| 143 | CALL crs_dom_coordinates( gphif, glamf, 'U', gphiu_crs, glamu_crs ) |
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| 144 | CALL crs_dom_coordinates( gphif, glamf, 'V', gphiv_crs, glamv_crs ) |
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| 145 | CALL crs_dom_coordinates( gphif, glamf, 'F', gphif_crs, glamf_crs ) |
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| 146 | ENDIF |
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| 147 | |
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| 148 | |
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| 149 | ! 3.c. Get the horizontal mesh |
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| 150 | |
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| 151 | ! 3.c.1 Horizontal scale factors |
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| 152 | |
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| 153 | CALL crs_dom_hgr( e1t, e2t, 'T', e1t_crs, e2t_crs ) |
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| 154 | CALL crs_dom_hgr( e1u, e2u, 'U', e1u_crs, e2u_crs ) |
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| 155 | CALL crs_dom_hgr( e1v, e2v, 'V', e1v_crs, e2v_crs ) |
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| 156 | CALL crs_dom_hgr( e1f, e2f, 'F', e1f_crs, e2f_crs ) |
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| 157 | |
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| 158 | e1e2t_crs(:,:) = e1t_crs(:,:) * e2t_crs(:,:) |
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| 159 | |
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| 160 | |
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| 161 | ! 3.c.2 Coriolis factor |
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| 162 | |
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[7646] | 163 | !!gm Not sure CRS needs Coriolis parameter.... |
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| 164 | !!gm If needed, then update this to have Coriolis at both f- and t-points |
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[4015] | 165 | |
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[7646] | 166 | ff_crs(:,:) = 2. * omega * SIN( rad * gphif_crs(:,:) ) |
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[4015] | 167 | |
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[7646] | 168 | CALL ctl_warn( 'crsini: CAUTION, CRS only designed for Coriolis defined on the sphere' ) |
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[4015] | 169 | |
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| 170 | |
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| 171 | ! 3.d.1 mbathy ( vertical k-levels of bathymetry ) |
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| 172 | |
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| 173 | CALL crs_dom_bat |
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| 174 | |
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| 175 | ! |
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[12928] | 176 | ze3t(:,:,:) = e3t(:,:,:,Kmm) |
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| 177 | ze3u(:,:,:) = e3u(:,:,:,Kmm) |
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| 178 | ze3v(:,:,:) = e3v(:,:,:,Kmm) |
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| 179 | ze3w(:,:,:) = e3w(:,:,:,Kmm) |
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[4015] | 180 | |
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| 181 | ! 3.d.2 Surfaces |
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[6140] | 182 | CALL crs_dom_sfc( tmask, 'W', e1e2w_crs, e1e2w_msk, p_e1=e1t, p_e2=e2t ) |
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| 183 | CALL crs_dom_sfc( umask, 'U', e2e3u_crs, e2e3u_msk, p_e2=e2u, p_e3=ze3u ) |
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| 184 | CALL crs_dom_sfc( vmask, 'V', e1e3v_crs, e1e3v_msk, p_e1=e1v, p_e3=ze3v ) |
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[4015] | 185 | |
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| 186 | facsurfu(:,:,:) = umask_crs(:,:,:) * e2e3u_msk(:,:,:) / e2e3u_crs(:,:,:) |
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| 187 | facsurfv(:,:,:) = vmask_crs(:,:,:) * e1e3v_msk(:,:,:) / e1e3v_crs(:,:,:) |
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| 188 | |
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| 189 | ! 3.d.3 Vertical scale factors |
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| 190 | ! |
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[6140] | 191 | CALL crs_dom_e3( e1t, e2t, ze3t, e1e2w_crs, 'T', tmask, e3t_crs, e3t_max_crs) |
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| 192 | CALL crs_dom_e3( e1u, e2u, ze3u, e2e3u_crs, 'U', umask, e3u_crs, e3u_max_crs) |
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| 193 | CALL crs_dom_e3( e1v, e2v, ze3v, e1e3v_crs, 'V', vmask, e3v_crs, e3v_max_crs) |
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| 194 | CALL crs_dom_e3( e1t, e2t, ze3w, e1e2w_crs, 'W', tmask, e3w_crs, e3w_max_crs) |
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[4015] | 195 | |
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[5836] | 196 | ! Replace 0 by e3t_0 or e3w_0 |
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[4015] | 197 | DO jk = 1, jpk |
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| 198 | DO ji = 1, jpi_crs |
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| 199 | DO jj = 1, jpj_crs |
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[4294] | 200 | IF( e3t_crs(ji,jj,jk) == 0._wp ) e3t_crs(ji,jj,jk) = e3t_1d(jk) |
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| 201 | IF( e3w_crs(ji,jj,jk) == 0._wp ) e3w_crs(ji,jj,jk) = e3w_1d(jk) |
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| 202 | IF( e3u_crs(ji,jj,jk) == 0._wp ) e3u_crs(ji,jj,jk) = e3t_1d(jk) |
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| 203 | IF( e3v_crs(ji,jj,jk) == 0._wp ) e3v_crs(ji,jj,jk) = e3t_1d(jk) |
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[4015] | 204 | ENDDO |
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| 205 | ENDDO |
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| 206 | ENDDO |
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| 207 | |
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| 208 | ! 3.d.3 Vertical depth (meters) |
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[6140] | 209 | CALL crs_dom_ope( gdept_0, 'MAX', 'T', tmask, gdept_crs, p_e3=ze3t, psgn=1.0 ) |
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| 210 | CALL crs_dom_ope( gdepw_0, 'MAX', 'W', tmask, gdepw_crs, p_e3=ze3w, psgn=1.0 ) |
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[4015] | 211 | |
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| 212 | |
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| 213 | !--------------------------------------------------------- |
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| 214 | ! 4. Coarse grid ocean volume and averaging weights |
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| 215 | !--------------------------------------------------------- |
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| 216 | ! 4.a. Ocean volume or area unmasked and masked |
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[6140] | 217 | CALL crs_dom_facvol( tmask, 'T', e1t, e2t, ze3t, ocean_volume_crs_t, facvol_t ) |
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[4015] | 218 | ! |
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| 219 | bt_crs(:,:,:) = ocean_volume_crs_t(:,:,:) * facvol_t(:,:,:) |
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| 220 | ! |
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| 221 | r1_bt_crs(:,:,:) = 0._wp |
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| 222 | WHERE( bt_crs /= 0._wp ) r1_bt_crs(:,:,:) = 1._wp / bt_crs(:,:,:) |
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| 223 | |
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[6140] | 224 | CALL crs_dom_facvol( tmask, 'W', e1t, e2t, ze3w, ocean_volume_crs_w, facvol_w ) |
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[4015] | 225 | ! |
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| 226 | !--------------------------------------------------------- |
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[9598] | 227 | ! 5. Write out coarse meshmask (see OCE/DOM/domwri.F90 for ideas later) |
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[4015] | 228 | !--------------------------------------------------------- |
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| 229 | |
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[9169] | 230 | IF( ln_msh_crs ) THEN |
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[4015] | 231 | CALL dom_grid_crs ! Save the parent grid information & Switch to coarse grid domain |
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| 232 | CALL crs_dom_wri |
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| 233 | CALL dom_grid_glo ! Return to parent grid domain |
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| 234 | ENDIF |
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| 235 | |
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[5836] | 236 | !--------------------------------------------------------- |
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| 237 | ! 7. Finish and clean-up |
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| 238 | !--------------------------------------------------------- |
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| 239 | ! |
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[4015] | 240 | END SUBROUTINE crs_init |
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| 241 | |
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| 242 | !!====================================================================== |
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| 243 | END MODULE crsini |
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