[3] | 1 | MODULE domhgr |
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| 2 | !!============================================================================== |
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[93] | 3 | !! *** MODULE domhgr *** |
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[3] | 4 | !! Ocean initialization : domain initialization |
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| 5 | !!============================================================================== |
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[2528] | 6 | !! History : OPA ! 1988-03 (G. Madec) Original code |
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| 7 | !! 7.0 ! 1996-01 (G. Madec) terrain following coordinates |
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| 8 | !! 8.0 ! 1997-02 (G. Madec) print mesh informations |
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| 9 | !! 8.1 ! 1999-11 (M. Imbard) NetCDF format with IO-IPSL |
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| 10 | !! 8.2 ! 2000-08 (D. Ludicone) Reduced section at Bab el Mandeb |
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| 11 | !! - ! 2001-09 (M. Levy) eel config: grid in km, beta-plane |
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| 12 | !! NEMO 1.0 ! 2002-08 (G. Madec) F90: Free form and module, namelist |
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| 13 | !! - ! 2004-01 (A.M. Treguier, J.M. Molines) Case 4 (Mercator mesh) |
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| 14 | !! use of parameters in par_CONFIG-Rxx.h90, not in namelist |
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| 15 | !! - ! 2004-05 (A. Koch-Larrouy) Add Gyre configuration |
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[5836] | 16 | !! 3.7 ! 2015-09 (G. Madec, S. Flavoni) add cell surface and their inverse |
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| 17 | !! add optional read of e1e2u & e1e2v |
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[7646] | 18 | !! - ! 2016-04 (S. Flavoni, G. Madec) new configuration interface: read or usrdef.F90 |
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[473] | 19 | !!---------------------------------------------------------------------- |
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[3] | 20 | |
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| 21 | !!---------------------------------------------------------------------- |
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[2528] | 22 | !! dom_hgr : initialize the horizontal mesh |
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[7646] | 23 | !! hgr_read : read horizontal information in the domain configuration file |
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[3] | 24 | !!---------------------------------------------------------------------- |
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[2528] | 25 | USE dom_oce ! ocean space and time domain |
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[7646] | 26 | USE par_oce ! ocean space and time domain |
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[2528] | 27 | USE phycst ! physical constants |
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[7646] | 28 | USE usrdef_hgr ! User defined routine |
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[5836] | 29 | ! |
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[2528] | 30 | USE in_out_manager ! I/O manager |
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[7646] | 31 | USE iom ! I/O library |
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[2528] | 32 | USE lib_mpp ! MPP library |
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[3294] | 33 | USE timing ! Timing |
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[3] | 34 | |
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| 35 | IMPLICIT NONE |
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| 36 | PRIVATE |
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| 37 | |
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[2528] | 38 | PUBLIC dom_hgr ! called by domain.F90 |
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| 39 | |
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[3] | 40 | !!---------------------------------------------------------------------- |
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[9598] | 41 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[7753] | 42 | !! $Id$ |
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[10068] | 43 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[3] | 44 | !!---------------------------------------------------------------------- |
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| 45 | CONTAINS |
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| 46 | |
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| 47 | SUBROUTINE dom_hgr |
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| 48 | !!---------------------------------------------------------------------- |
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| 49 | !! *** ROUTINE dom_hgr *** |
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| 50 | !! |
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[7646] | 51 | !! ** Purpose : Read or compute the geographical position (in degrees) |
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| 52 | !! of the model grid-points, the horizontal scale factors (in meters), |
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| 53 | !! the associated horizontal metrics, and the Coriolis factor (in s-1). |
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[3] | 54 | !! |
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[7646] | 55 | !! ** Method : Controlled by ln_read_cfg logical |
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| 56 | !! =T : all needed arrays are read in mesh_mask.nc file |
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| 57 | !! =F : user-defined configuration, all needed arrays |
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| 58 | !! are computed in usr-def_hgr subroutine |
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[3] | 59 | !! |
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[7646] | 60 | !! If Coriolis factor is neither read nor computed (iff=0) |
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| 61 | !! it is computed from gphit assuming that the mesh is |
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| 62 | !! defined on the sphere : |
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| 63 | !! ff = 2.*omega*sin(gphif) (in s-1) |
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| 64 | !! |
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| 65 | !! If u- & v-surfaces are neither read nor computed (ie1e2u_v=0) |
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| 66 | !! (i.e. no use of reduced scale factors in some straits) |
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| 67 | !! they are computed from e1u, e2u, e1v and e2v as: |
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| 68 | !! e1e2u = e1u*e2u and e1e2v = e1v*e2v |
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| 69 | !! |
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| 70 | !! ** Action : - define longitude & latitude of t-, u-, v- and f-points (in degrees) |
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| 71 | !! - define Coriolis parameter at f-point (in 1/s) |
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| 72 | !! - define i- & j-scale factors at t-, u-, v- and f-points (in meters) |
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| 73 | !! - define associated horizontal metrics at t-, u-, v- and f-points |
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| 74 | !! (inverse of scale factors 1/e1 & 1/e2, surface e1*e2, ratios e1/e2 & e2/e1) |
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[3] | 75 | !!---------------------------------------------------------------------- |
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[7646] | 76 | INTEGER :: ji, jj ! dummy loop indices |
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| 77 | INTEGER :: ie1e2u_v ! flag for u- & v-surfaces |
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| 78 | INTEGER :: iff ! flag for Coriolis parameter |
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[3] | 79 | !!---------------------------------------------------------------------- |
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[3294] | 80 | ! |
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[9019] | 81 | IF( ln_timing ) CALL timing_start('dom_hgr') |
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[3294] | 82 | ! |
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[3] | 83 | IF(lwp) THEN |
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| 84 | WRITE(numout,*) |
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| 85 | WRITE(numout,*) 'dom_hgr : define the horizontal mesh from ithe following par_oce parameters ' |
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[7646] | 86 | WRITE(numout,*) '~~~~~~~ ' |
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| 87 | WRITE(numout,*) ' namcfg : read (=T) or user defined (=F) configuration ln_read_cfg = ', ln_read_cfg |
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[3] | 88 | ENDIF |
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[5836] | 89 | ! |
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| 90 | ! |
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[7646] | 91 | IF( ln_read_cfg ) THEN !== read in mesh_mask.nc file ==! |
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[3] | 92 | IF(lwp) WRITE(numout,*) |
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[9169] | 93 | IF(lwp) WRITE(numout,*) ' ==>>> read horizontal mesh in ', TRIM( cn_domcfg ), ' file' |
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[5836] | 94 | ! |
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[7646] | 95 | CALL hgr_read ( glamt , glamu , glamv , glamf , & ! geographic position (required) |
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| 96 | & gphit , gphiu , gphiv , gphif , & ! - - |
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| 97 | & iff , ff_f , ff_t , & ! Coriolis parameter (if not on the sphere) |
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| 98 | & e1t , e1u , e1v , e1f , & ! scale factors (required) |
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| 99 | & e2t , e2u , e2v , e2f , & ! - - - |
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| 100 | & ie1e2u_v , e1e2u , e1e2v ) ! u- & v-surfaces (if gridsize reduction in some straits) |
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[5836] | 101 | ! |
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[7646] | 102 | ELSE !== User defined configuration ==! |
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[3] | 103 | IF(lwp) WRITE(numout,*) |
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[7646] | 104 | IF(lwp) WRITE(numout,*) ' User defined horizontal mesh (usr_def_hgr)' |
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[5836] | 105 | ! |
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[7646] | 106 | CALL usr_def_hgr( glamt , glamu , glamv , glamf , & ! geographic position (required) |
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| 107 | & gphit , gphiu , gphiv , gphif , & ! |
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| 108 | & iff , ff_f , ff_t , & ! Coriolis parameter (if domain not on the sphere) |
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| 109 | & e1t , e1u , e1v , e1f , & ! scale factors (required) |
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| 110 | & e2t , e2u , e2v , e2f , & ! |
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| 111 | & ie1e2u_v , e1e2u , e1e2v ) ! u- & v-surfaces (if gridsize reduction is used in strait(s)) |
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[5836] | 112 | ! |
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[7646] | 113 | ENDIF |
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| 114 | ! |
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| 115 | ! !== Coriolis parameter ==! (if necessary) |
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| 116 | ! |
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| 117 | IF( iff == 0 ) THEN ! Coriolis parameter has not been defined |
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| 118 | IF(lwp) WRITE(numout,*) ' Coriolis parameter calculated on the sphere from gphif & gphit' |
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[7753] | 119 | ff_f(:,:) = 2. * omega * SIN( rad * gphif(:,:) ) ! compute it on the sphere at f-point |
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| 120 | ff_t(:,:) = 2. * omega * SIN( rad * gphit(:,:) ) ! - - - at t-point |
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[7646] | 121 | ELSE |
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| 122 | IF( ln_read_cfg ) THEN |
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| 123 | IF(lwp) WRITE(numout,*) ' Coriolis parameter have been read in ', TRIM( cn_domcfg ), ' file' |
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| 124 | ELSE |
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| 125 | IF(lwp) WRITE(numout,*) ' Coriolis parameter have been set in usr_def_hgr routine' |
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[389] | 126 | ENDIF |
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[7646] | 127 | ENDIF |
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| 128 | |
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[5836] | 129 | ! |
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[7646] | 130 | ! !== associated horizontal metrics ==! |
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| 131 | ! |
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[7753] | 132 | r1_e1t(:,:) = 1._wp / e1t(:,:) ; r1_e2t (:,:) = 1._wp / e2t(:,:) |
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| 133 | r1_e1u(:,:) = 1._wp / e1u(:,:) ; r1_e2u (:,:) = 1._wp / e2u(:,:) |
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| 134 | r1_e1v(:,:) = 1._wp / e1v(:,:) ; r1_e2v (:,:) = 1._wp / e2v(:,:) |
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| 135 | r1_e1f(:,:) = 1._wp / e1f(:,:) ; r1_e2f (:,:) = 1._wp / e2f(:,:) |
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| 136 | ! |
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| 137 | e1e2t (:,:) = e1t(:,:) * e2t(:,:) ; r1_e1e2t(:,:) = 1._wp / e1e2t(:,:) |
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| 138 | e1e2f (:,:) = e1f(:,:) * e2f(:,:) ; r1_e1e2f(:,:) = 1._wp / e1e2f(:,:) |
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[7646] | 139 | IF( ie1e2u_v == 0 ) THEN ! u- & v-surfaces have not been defined |
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| 140 | IF(lwp) WRITE(numout,*) ' u- & v-surfaces calculated as e1 e2 product' |
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[7753] | 141 | e1e2u (:,:) = e1u(:,:) * e2u(:,:) ! compute them |
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| 142 | e1e2v (:,:) = e1v(:,:) * e2v(:,:) |
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[7646] | 143 | ELSE |
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| 144 | IF(lwp) WRITE(numout,*) ' u- & v-surfaces have been read in "mesh_mask" file:' |
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| 145 | IF(lwp) WRITE(numout,*) ' grid size reduction in strait(s) is used' |
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[5836] | 146 | ENDIF |
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[7753] | 147 | r1_e1e2u(:,:) = 1._wp / e1e2u(:,:) ! compute their invert in any cases |
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| 148 | r1_e1e2v(:,:) = 1._wp / e1e2v(:,:) |
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| 149 | ! |
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| 150 | e2_e1u(:,:) = e2u(:,:) / e1u(:,:) |
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| 151 | e1_e2v(:,:) = e1v(:,:) / e2v(:,:) |
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[5836] | 152 | ! |
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[3294] | 153 | ! |
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[9019] | 154 | IF( ln_timing ) CALL timing_stop('dom_hgr') |
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[3294] | 155 | ! |
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[3] | 156 | END SUBROUTINE dom_hgr |
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| 157 | |
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| 158 | |
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[7646] | 159 | SUBROUTINE hgr_read( plamt , plamu , plamv , plamf , & ! gridpoints position (required) |
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| 160 | & pphit , pphiu , pphiv , pphif , & |
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| 161 | & kff , pff_f , pff_t , & ! Coriolis parameter (if not on the sphere) |
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| 162 | & pe1t , pe1u , pe1v , pe1f , & ! scale factors (required) |
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| 163 | & pe2t , pe2u , pe2v , pe2f , & |
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| 164 | & ke1e2u_v , pe1e2u , pe1e2v ) ! u- & v-surfaces (if gridsize reduction in some straits) |
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[3] | 165 | !!--------------------------------------------------------------------- |
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[81] | 166 | !! *** ROUTINE hgr_read *** |
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[3] | 167 | !! |
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[7646] | 168 | !! ** Purpose : Read a mesh_mask file in NetCDF format using IOM |
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[3] | 169 | !! |
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| 170 | !!---------------------------------------------------------------------- |
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[7646] | 171 | REAL(wp), DIMENSION(:,:), INTENT(out) :: plamt, plamu, plamv, plamf ! longitude outputs |
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| 172 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pphit, pphiu, pphiv, pphif ! latitude outputs |
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| 173 | INTEGER , INTENT(out) :: kff ! =1 Coriolis parameter read here, =0 otherwise |
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| 174 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pff_f, pff_t ! Coriolis factor at f-point (if found in file) |
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| 175 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1t, pe1u, pe1v, pe1f ! i-scale factors |
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| 176 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe2t, pe2u, pe2v, pe2f ! j-scale factors |
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| 177 | INTEGER , INTENT(out) :: ke1e2u_v ! =1 u- & v-surfaces read here, =0 otherwise |
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| 178 | REAL(wp), DIMENSION(:,:), INTENT(out) :: pe1e2u, pe1e2v ! u- & v-surfaces (if found in file) |
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[5836] | 179 | ! |
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[7646] | 180 | INTEGER :: inum ! logical unit |
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[3] | 181 | !!---------------------------------------------------------------------- |
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[5836] | 182 | ! |
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[3] | 183 | IF(lwp) THEN |
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| 184 | WRITE(numout,*) |
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[9190] | 185 | WRITE(numout,*) ' hgr_read : read the horizontal coordinates in mesh_mask' |
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| 186 | WRITE(numout,*) ' ~~~~~~~~ jpiglo = ', jpiglo, ' jpjglo = ', jpjglo, ' jpk = ', jpk |
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[3] | 187 | ENDIF |
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[5836] | 188 | ! |
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[7646] | 189 | CALL iom_open( cn_domcfg, inum ) |
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[5836] | 190 | ! |
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[7646] | 191 | CALL iom_get( inum, jpdom_data, 'glamt', plamt, lrowattr=ln_use_jattr ) |
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| 192 | CALL iom_get( inum, jpdom_data, 'glamu', plamu, lrowattr=ln_use_jattr ) |
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| 193 | CALL iom_get( inum, jpdom_data, 'glamv', plamv, lrowattr=ln_use_jattr ) |
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| 194 | CALL iom_get( inum, jpdom_data, 'glamf', plamf, lrowattr=ln_use_jattr ) |
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[5836] | 195 | ! |
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[7646] | 196 | CALL iom_get( inum, jpdom_data, 'gphit', pphit, lrowattr=ln_use_jattr ) |
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| 197 | CALL iom_get( inum, jpdom_data, 'gphiu', pphiu, lrowattr=ln_use_jattr ) |
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| 198 | CALL iom_get( inum, jpdom_data, 'gphiv', pphiv, lrowattr=ln_use_jattr ) |
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| 199 | CALL iom_get( inum, jpdom_data, 'gphif', pphif, lrowattr=ln_use_jattr ) |
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[5836] | 200 | ! |
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[7646] | 201 | CALL iom_get( inum, jpdom_data, 'e1t' , pe1t , lrowattr=ln_use_jattr ) |
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| 202 | CALL iom_get( inum, jpdom_data, 'e1u' , pe1u , lrowattr=ln_use_jattr ) |
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| 203 | CALL iom_get( inum, jpdom_data, 'e1v' , pe1v , lrowattr=ln_use_jattr ) |
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| 204 | CALL iom_get( inum, jpdom_data, 'e1f' , pe1f , lrowattr=ln_use_jattr ) |
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[5836] | 205 | ! |
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[7646] | 206 | CALL iom_get( inum, jpdom_data, 'e2t' , pe2t , lrowattr=ln_use_jattr ) |
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| 207 | CALL iom_get( inum, jpdom_data, 'e2u' , pe2u , lrowattr=ln_use_jattr ) |
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| 208 | CALL iom_get( inum, jpdom_data, 'e2v' , pe2v , lrowattr=ln_use_jattr ) |
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| 209 | CALL iom_get( inum, jpdom_data, 'e2f' , pe2f , lrowattr=ln_use_jattr ) |
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[5836] | 210 | ! |
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[7646] | 211 | IF( iom_varid( inum, 'ff_f', ldstop = .FALSE. ) > 0 .AND. & |
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| 212 | & iom_varid( inum, 'ff_t', ldstop = .FALSE. ) > 0 ) THEN |
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| 213 | IF(lwp) WRITE(numout,*) ' Coriolis factor at f- and t-points read in ', TRIM( cn_domcfg ), ' file' |
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| 214 | CALL iom_get( inum, jpdom_data, 'ff_f' , pff_f , lrowattr=ln_use_jattr ) |
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| 215 | CALL iom_get( inum, jpdom_data, 'ff_t' , pff_t , lrowattr=ln_use_jattr ) |
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| 216 | kff = 1 |
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| 217 | ELSE |
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| 218 | kff = 0 |
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| 219 | ENDIF |
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| 220 | ! |
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[5836] | 221 | IF( iom_varid( inum, 'e1e2u', ldstop = .FALSE. ) > 0 ) THEN |
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[7646] | 222 | IF(lwp) WRITE(numout,*) ' e1e2u & e1e2v read in ', TRIM( cn_domcfg ), ' file' |
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| 223 | CALL iom_get( inum, jpdom_data, 'e1e2u' , pe1e2u , lrowattr=ln_use_jattr ) |
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| 224 | CALL iom_get( inum, jpdom_data, 'e1e2v' , pe1e2v , lrowattr=ln_use_jattr ) |
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[5836] | 225 | ke1e2u_v = 1 |
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| 226 | ELSE |
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| 227 | ke1e2u_v = 0 |
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| 228 | ENDIF |
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| 229 | ! |
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[473] | 230 | CALL iom_close( inum ) |
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[7646] | 231 | ! |
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| 232 | END SUBROUTINE hgr_read |
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[473] | 233 | |
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[3] | 234 | !!====================================================================== |
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| 235 | END MODULE domhgr |
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