| 1 | ! ================================================================================================================================= |
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| 2 | ! MODULE : grid |
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| 3 | ! |
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| 4 | ! CONTACT : orchidee-help _at_ ipsl.jussieu.fr |
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| 5 | ! |
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| 6 | ! LICENCE : IPSL (2006) |
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| 7 | ! This software is governed by the CeCILL licence see ORCHIDEE/ORCHIDEE_CeCILL.LIC |
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| 8 | ! |
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| 9 | !>\BRIEF This module define variables for the grid to gathered points. |
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| 10 | !! |
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| 11 | !!\n DESCRIPTION: |
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| 12 | !! |
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| 13 | !! RECENT CHANGE(S): None |
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| 14 | !! |
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| 15 | !! REFERENCE(S) : None |
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| 16 | !! |
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| 17 | !! SVN : |
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| 18 | !! $HeadURL$ |
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| 19 | !! $Date$ |
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| 20 | !! $Revision$ |
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| 21 | !! \n |
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| 22 | !_ ================================================================================================================================ |
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| 23 | |
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| 24 | MODULE grid |
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| 25 | |
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| 26 | USE defprec |
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| 27 | USE constantes |
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| 28 | USE mod_orchidee_para |
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| 29 | |
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| 30 | IMPLICIT NONE |
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| 31 | |
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| 32 | ! |
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| 33 | ! PARAMETERS |
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| 34 | ! default resolution (m) |
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| 35 | REAL(r_std), PARAMETER :: default_resolution = 250000. |
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| 36 | ! |
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| 37 | ! VARIABLES |
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| 38 | ! |
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| 39 | ! Global map or not. |
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| 40 | ! There is little change that if iim <=2 and jjm <= 2 that we have global grid. |
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| 41 | ! Furthermore using the second line allows to avoid pole problems for global grids |
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| 42 | LOGICAL, SAVE :: global = .TRUE. |
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| 43 | !$OMP THREADPRIVATE(global) |
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| 44 | ! |
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| 45 | !- |
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| 46 | !- Variable to help describe the grid |
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| 47 | !- once the points are gathered. |
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| 48 | !- |
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| 49 | !! Limits of the domain |
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| 50 | REAL(r_std), SAVE :: limit_west, limit_east, & |
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| 51 | & limit_north, limit_south |
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| 52 | !$OMP THREADPRIVATE(limit_west, limit_east, limit_north, limit_south) |
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| 53 | !- |
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| 54 | !! Geographical coordinates |
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| 55 | REAL(r_std), ALLOCATABLE, DIMENSION (:,:), SAVE :: lalo |
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| 56 | !$OMP THREADPRIVATE(lalo) |
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| 57 | !! index of land points |
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| 58 | INTEGER, ALLOCATABLE, DIMENSION (:), SAVE :: ilandindex,jlandindex |
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| 59 | !$OMP THREADPRIVATE(ilandindex, jlandindex) |
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| 60 | !- |
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| 61 | !! Fraction of continents. |
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| 62 | REAL(r_std), ALLOCATABLE, DIMENSION (:), SAVE :: contfrac |
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| 63 | !$OMP THREADPRIVATE(contfrac) |
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| 64 | ! |
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| 65 | ! indices of the 4 neighbours of each grid point (1=N, 2=E, 3=S, 4=W) |
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| 66 | ! a zero or negative index means that this neighbour is not a land point |
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| 67 | INTEGER(i_std), ALLOCATABLE, DIMENSION (:,:), SAVE :: neighbours |
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| 68 | !$OMP THREADPRIVATE(neighbours) |
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| 69 | ! |
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| 70 | ! resolution at each grid point in m (1=E-W, 2=N-S) |
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| 71 | ! (size in x an y of the grid) |
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| 72 | REAL(r_std), ALLOCATABLE, DIMENSION (:,:), SAVE :: resolution |
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| 73 | !$OMP THREADPRIVATE(resolution) |
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| 74 | REAL(r_std), DIMENSION(2), SAVE :: min_resol,max_resol |
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| 75 | !$OMP THREADPRIVATE(min_resol, max_resol) |
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| 76 | REAL(r_std), ALLOCATABLE, DIMENSION (:), SAVE :: area |
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| 77 | !$OMP THREADPRIVATE(area) |
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| 78 | ! |
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| 79 | ! |
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| 80 | ! Get the direction of the grid |
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| 81 | ! |
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| 82 | CHARACTER(LEN=2), DIMENSION(2), SAVE, PRIVATE :: grid_dir |
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| 83 | !$OMP THREADPRIVATE(grid_dir) |
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| 84 | ! |
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| 85 | ! Rose gives the geographical direction for the various index increments |
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| 86 | ! The following corespondences exist |
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| 87 | ! WE&NS WE&SN and so on ! |
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| 88 | ! rose(1) = i+0 & j-1 NN SS |
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| 89 | ! rose(2) = i+1 & j-1 NE SE |
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| 90 | ! rose(3) = i+1 & j+0 EE EE |
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| 91 | ! rose(4) = i+1 & j+1 SE NE |
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| 92 | ! rose(5) = i+0 & j+1 SS NN |
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| 93 | ! rose(6) = i-1 & j+1 SW NW |
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| 94 | ! rose(7) = i-1 & j+0 WW WW |
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| 95 | ! rose(8) = i-1 & j-1 NW SW |
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| 96 | INTEGER(i_std), DIMENSION(8), SAVE, PRIVATE :: rose |
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| 97 | !$OMP THREADPRIVATE(rose) |
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| 98 | ! |
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| 99 | ! The calendar |
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| 100 | CHARACTER(LEN=20), SAVE :: calendar_str |
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| 101 | !$OMP THREADPRIVATE(calendar_str) |
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| 102 | ! |
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| 103 | ! The date |
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| 104 | REAL(r_std), SAVE :: in_julian |
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| 105 | !$OMP THREADPRIVATE(in_julian) |
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| 106 | ! Diff with day 0 |
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| 107 | REAL(r_std), SAVE :: julian_diff |
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| 108 | !$OMP THREADPRIVATE(julian_diff) |
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| 109 | ! |
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| 110 | INTEGER(i_std), SAVE :: year, month, day |
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| 111 | !$OMP THREADPRIVATE(year, month, day) |
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| 112 | REAL(r_std), SAVE :: sec |
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| 113 | !$OMP THREADPRIVATE(sec) |
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| 114 | ! |
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| 115 | ! month_len (d) |
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| 116 | INTEGER(i_std), SAVE :: month_len |
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| 117 | !$OMP THREADPRIVATE(month_len) |
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| 118 | ! |
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| 119 | ! year length (d) |
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| 120 | INTEGER(i_std), SAVE :: year_length=0 |
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| 121 | !$OMP THREADPRIVATE(year_length) |
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| 122 | ! |
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| 123 | ! Ration between calendar year in days (ie 360d or 365d ...) to gregorian year length |
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| 124 | REAL(r_std), SAVE :: year_spread |
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| 125 | !$OMP THREADPRIVATE(year_spread) |
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| 126 | ! |
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| 127 | CONTAINS |
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| 128 | |
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| 129 | !! ================================================================================================================================ |
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| 130 | !! SUBROUTINE : init_grid |
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| 131 | !! |
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| 132 | !>\BRIEF |
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| 133 | !! |
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| 134 | !! DESCRIPTION : None |
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| 135 | !! |
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| 136 | !! RECENT CHANGE(S): None |
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| 137 | !! |
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| 138 | !! MAIN OUTPUT VARIABLE(S): |
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| 139 | !! |
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| 140 | !! REFERENCE(S) : |
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| 141 | !! |
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| 142 | !! FLOWCHART : None |
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| 143 | !! \n |
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| 144 | !_ ================================================================================================================================ |
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| 145 | |
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| 146 | SUBROUTINE init_grid ( npts ) |
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| 147 | |
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| 148 | IMPLICIT NONE |
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| 149 | |
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| 150 | !! 0. Parameter and variables declaration |
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| 151 | |
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| 152 | !! 0.1 Input variables |
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| 153 | |
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| 154 | INTEGER(i_std), INTENT(in) :: npts !! Domain size : Number of local continental points |
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| 155 | |
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| 156 | !_ ================================================================================================================================ |
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| 157 | |
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| 158 | ! |
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| 159 | ! Create the internal coordinate table |
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| 160 | ! |
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| 161 | IF ( (.NOT.ALLOCATED(lalo))) THEN |
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| 162 | ALLOCATE(lalo(npts,2)) |
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| 163 | lalo(:,:) = val_exp |
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| 164 | ENDIF |
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| 165 | !- |
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| 166 | !- Store variable to help describe the grid |
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| 167 | !- once the points are gathered. |
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| 168 | !- |
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| 169 | IF ( (.NOT.ALLOCATED(neighbours))) THEN |
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| 170 | ALLOCATE(neighbours(npts,8)) |
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| 171 | neighbours(:,:) = -999999 |
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| 172 | ENDIF |
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| 173 | IF ( (.NOT.ALLOCATED(resolution))) THEN |
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| 174 | ALLOCATE(resolution(npts,2)) |
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| 175 | resolution(:,:) = val_exp |
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| 176 | ENDIF |
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| 177 | IF ( (.NOT.ALLOCATED(area))) THEN |
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| 178 | ALLOCATE(area(npts)) |
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| 179 | area(:) = val_exp |
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| 180 | ENDIF |
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| 181 | ! |
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| 182 | !- Store the fraction of the continents only once so that the user |
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| 183 | !- does not change them afterwards. |
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| 184 | ! |
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| 185 | IF ( (.NOT.ALLOCATED(contfrac))) THEN |
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| 186 | ALLOCATE(contfrac(npts)) |
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| 187 | contfrac(:) = val_exp |
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| 188 | ENDIF |
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| 189 | ! |
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| 190 | ! Allocation of index coordinates |
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| 191 | IF (.NOT. ALLOCATED(ilandindex)) THEN |
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| 192 | ALLOCATE(ilandindex(npts),jlandindex(npts)) |
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| 193 | ilandindex(:) = -10000000 |
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| 194 | jlandindex(:) = -10000000 |
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| 195 | ENDIF |
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| 196 | ! |
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| 197 | END SUBROUTINE init_grid |
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| 198 | |
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| 199 | |
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| 200 | !! ================================================================================================================================ |
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| 201 | !! SUBROUTINE : grid_stuff |
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| 202 | !! |
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| 203 | !>\BRIEF |
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| 204 | !! |
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| 205 | !! DESCRIPTION : None |
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| 206 | !! |
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| 207 | !! RECENT CHANGE(S): None |
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| 208 | !! |
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| 209 | !! MAIN OUTPUT VARIABLE(S): |
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| 210 | !! |
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| 211 | !! REFERENCE(S) : |
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| 212 | !! |
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| 213 | !! FLOWCHART : None |
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| 214 | !! \n |
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| 215 | !_ ================================================================================================================================ |
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| 216 | |
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| 217 | SUBROUTINE grid_stuff (npts_glo, iim, jjm, grid_lon, grid_lat, kindex) |
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| 218 | |
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| 219 | IMPLICIT NONE |
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| 220 | |
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| 221 | !! 0. Parameter and variables declaration |
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| 222 | |
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| 223 | !! 0.1 Input variables |
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| 224 | |
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| 225 | INTEGER(i_std), INTENT(in) :: npts_glo !! Domain size |
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| 226 | INTEGER(i_std), INTENT(in) :: iim, jjm !! Size of cartesian grid |
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| 227 | REAL(r_std), DIMENSION(iim,jjm), INTENT(in) :: grid_lon !! Longitudes on cartesian grid |
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| 228 | REAL(r_std), DIMENSION(iim,jjm), INTENT(in) :: grid_lat !! Latitudes on cartesian grid |
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| 229 | INTEGER(i_std), DIMENSION(:), INTENT(in) :: kindex !! Index of land point on 2D map (in local position) |
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| 230 | |
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| 231 | !! 0.4 Local variables |
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| 232 | |
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| 233 | INTEGER, ALLOCATABLE, DIMENSION (:) :: index_p !! Index of land point on 2D map (in global position) |
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| 234 | INTEGER(i_std), DIMENSION(iim,jjm) :: correspondance !! which STOMATE point corresponds to |
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| 235 | !! the given point on the cartesian grid |
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| 236 | REAL(r_std) :: coslat !! cosine of the latitude |
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| 237 | INTEGER(i_std) :: ndefault_lon, ndefault_lat !! number of points where default resolution is used |
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| 238 | INTEGER(i_std) :: i,ip,jp, imm1, imp1, imm1l, imp1l, ii !! Indices |
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| 239 | INTEGER(i_std), SAVE :: bavard = 2 !! |
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| 240 | !$OMP THREADPRIVATE(bavard) |
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| 241 | |
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| 242 | !_ ================================================================================================================================ |
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| 243 | |
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| 244 | IF ( bavard .GE. 4 ) WRITE(numout,*) 'Entering grid_stuff' |
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| 245 | |
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| 246 | ! default resolution |
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| 247 | IF ( bavard .GT. 1 ) WRITE(numout,*) 'grid stuff: default resolution (m): ',default_resolution |
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| 248 | ! |
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| 249 | !- |
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| 250 | IF (is_root_prc) THEN |
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| 251 | ! Check if we have a global map or not. |
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| 252 | ! There is little change that if iim <=2 and jjm <= 2 that we have global grid. |
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| 253 | ! Furthermore using the second line allows to avoid pole problems for global grids |
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| 254 | IF (iim <= 2 .OR. jjm <= 2) THEN |
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| 255 | global = .FALSE. |
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| 256 | ELSE |
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| 257 | ! We assume here that the longitude is in increasing order and in degrees. |
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| 258 | IF ( grid_lon(iim,2)-grid_lon(1,2) >= 360. - (grid_lon(2,2)-grid_lon(1,2)) ) THEN |
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| 259 | global = .TRUE. |
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| 260 | ELSE |
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| 261 | global = .FALSE. |
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| 262 | ENDIF |
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| 263 | ENDIF |
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| 264 | ! |
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| 265 | ! Get the direction of the grid |
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| 266 | ! |
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| 267 | IF ( iim > 1 ) THEN |
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| 268 | IF ( grid_lon(1,1) <= grid_lon(2,1) ) THEN |
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| 269 | grid_dir(1) = 'WE' |
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| 270 | ELSE |
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| 271 | grid_dir(1) = 'EW' |
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| 272 | ENDIF |
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| 273 | ELSE |
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| 274 | grid_dir(1) = 'WE' |
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| 275 | ENDIF |
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| 276 | ! |
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| 277 | IF ( jjm > 1 ) THEN |
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| 278 | IF ( grid_lat(1,1) >= grid_lat(1,2) ) THEN |
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| 279 | grid_dir(2) = 'NS' |
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| 280 | ELSE |
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| 281 | grid_dir(2) = 'SN' |
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| 282 | ENDIF |
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| 283 | ELSE |
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| 284 | grid_dir(2) = 'NS' |
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| 285 | ENDIF |
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| 286 | ! |
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| 287 | !! WRITE(numout,*) 'Longitude direction :', grid_dir(1) |
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| 288 | !! WRITE(numout,*) 'Latitude direction :', grid_dir(2) |
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| 289 | ! |
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| 290 | ndefault_lon = 0 |
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| 291 | ndefault_lat = 0 |
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| 292 | ! initialize output |
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| 293 | neighbours_g(:,:) = -1 |
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| 294 | resolution_g(:,:) = zero |
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| 295 | min_resol(:) = 1.e6 |
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| 296 | max_resol(:) = moins_un |
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| 297 | |
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| 298 | correspondance(:,:) = -1 |
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| 299 | DO i = 1, npts_glo |
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| 300 | ! |
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| 301 | ! 1 find numbers of the latitude and longitude of each point |
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| 302 | ! |
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| 303 | |
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| 304 | ! index of latitude |
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| 305 | jp = INT( (index_g(i)-1) /iim ) + 1 |
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| 306 | |
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| 307 | ! index of longitude |
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| 308 | ip = index_g(i) - ( jp-1 ) * iim |
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| 309 | ! |
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| 310 | !correspondance(ip,jp) = kindex(i) |
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| 311 | ! |
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| 312 | correspondance(ip,jp) = i |
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| 313 | |
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| 314 | ENDDO |
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| 315 | |
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| 316 | ! |
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| 317 | ! Get the "wind rose" for the various orientation of the grid |
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| 318 | ! |
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| 319 | IF ( grid_dir(1) .EQ. 'WE' .AND. grid_dir(2) .EQ. 'NS' ) THEN |
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| 320 | rose(1) = 1 |
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| 321 | rose(2) = 2 |
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| 322 | rose(3) = 3 |
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| 323 | rose(4) = 4 |
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| 324 | rose(5) = 5 |
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| 325 | rose(6) = 6 |
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| 326 | rose(7) = 7 |
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| 327 | rose(8) = 8 |
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| 328 | ELSE IF ( grid_dir(1) .EQ. 'EW' .AND. grid_dir(2) .EQ. 'NS' ) THEN |
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| 329 | rose(1) = 1 |
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| 330 | rose(2) = 8 |
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| 331 | rose(3) = 7 |
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| 332 | rose(4) = 6 |
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| 333 | rose(5) = 5 |
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| 334 | rose(6) = 4 |
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| 335 | rose(7) = 3 |
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| 336 | rose(8) = 2 |
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| 337 | ELSE IF ( grid_dir(1) .EQ. 'WE' .AND. grid_dir(2) .EQ. 'SN' ) THEN |
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| 338 | rose(1) = 5 |
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| 339 | rose(2) = 4 |
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| 340 | rose(3) = 3 |
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| 341 | rose(4) = 2 |
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| 342 | rose(5) = 1 |
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| 343 | rose(6) = 8 |
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| 344 | rose(7) = 7 |
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| 345 | rose(8) = 6 |
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| 346 | ELSE IF ( grid_dir(1) .EQ. 'EW' .AND. grid_dir(2) .EQ. 'SN' ) THEN |
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| 347 | rose(1) = 5 |
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| 348 | rose(2) = 6 |
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| 349 | rose(3) = 7 |
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| 350 | rose(4) = 8 |
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| 351 | rose(5) = 1 |
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| 352 | rose(6) = 2 |
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| 353 | rose(7) = 3 |
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| 354 | rose(8) = 4 |
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| 355 | ELSE |
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| 356 | WRITE(numout,*) 'We can not be here' |
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| 357 | STOP 'grid_stuff' |
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| 358 | ENDIF |
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| 359 | |
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| 360 | DO i = 1, npts_glo |
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| 361 | |
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| 362 | ! index of latitude |
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| 363 | jp = INT( (index_g(i)-1) /iim ) + 1 |
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| 364 | |
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| 365 | ! index of longitude |
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| 366 | ip = index_g(i) - ( jp-1 ) * iim |
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| 367 | |
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| 368 | ! |
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| 369 | ! 2 resolution |
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| 370 | ! |
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| 371 | |
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| 372 | ! |
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| 373 | ! 2.1 longitude |
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| 374 | ! |
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| 375 | |
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| 376 | ! prevent infinite resolution at the pole |
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| 377 | coslat = MAX( COS( grid_lat(ip,jp) * pi/180. ), mincos ) |
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| 378 | IF ( iim .GT. 1 ) THEN |
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| 379 | |
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| 380 | IF ( ip .EQ. 1 ) THEN |
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| 381 | resolution_g(i,1) = & |
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| 382 | ABS( grid_lon(ip+1,jp) - grid_lon(ip,jp) ) * & |
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| 383 | pi/180. * R_Earth * coslat |
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| 384 | ELSEIF ( ip .EQ. iim ) THEN |
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| 385 | resolution_g(i,1) = & |
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| 386 | ABS( grid_lon(ip,jp) - grid_lon(ip-1,jp) ) * & |
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| 387 | pi/180. * R_Earth * coslat |
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| 388 | ELSE |
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| 389 | resolution_g(i,1) = & |
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| 390 | ABS( grid_lon(ip+1,jp) - grid_lon(ip-1,jp) )/2. *& |
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| 391 | pi/180. * R_Earth * coslat |
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| 392 | ENDIF |
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| 393 | |
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| 394 | ELSE |
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| 395 | |
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| 396 | resolution_g(i,1) = default_resolution |
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| 397 | |
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| 398 | ndefault_lon = ndefault_lon + 1 |
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| 399 | |
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| 400 | ENDIF |
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| 401 | |
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| 402 | ! |
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| 403 | ! 2.2 latitude |
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| 404 | ! |
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| 405 | |
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| 406 | IF ( jjm .GT. 1 ) THEN |
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| 407 | |
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| 408 | IF ( jp .EQ. 1 ) THEN |
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| 409 | resolution_g(i,2) = & |
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| 410 | ABS( grid_lat(ip,jp) - grid_lat(ip,jp+1) ) * & |
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| 411 | pi/180. * R_Earth |
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| 412 | ELSEIF ( jp .EQ. jjm ) THEN |
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| 413 | resolution_g(i,2) = & |
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| 414 | ABS( grid_lat(ip,jp-1) - grid_lat(ip,jp) ) * & |
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| 415 | pi/180. * R_Earth |
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| 416 | ELSE |
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| 417 | resolution_g(i,2) = & |
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| 418 | ABS( grid_lat(ip,jp-1) - grid_lat(ip,jp+1) )/2. *& |
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| 419 | pi/180. * R_Earth |
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| 420 | ENDIF |
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| 421 | |
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| 422 | ELSE |
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| 423 | |
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| 424 | resolution_g(i,2) = default_resolution |
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| 425 | |
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| 426 | ndefault_lat = ndefault_lat + 1 |
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| 427 | |
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| 428 | ENDIF |
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| 429 | min_resol(1) = MIN(resolution_g(i,1),min_resol(1)) |
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| 430 | min_resol(2) = MIN(resolution_g(i,2),min_resol(2)) |
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| 431 | max_resol(1) = MAX(resolution_g(i,1),max_resol(1)) |
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| 432 | max_resol(2) = MAX(resolution_g(i,2),max_resol(2)) |
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| 433 | |
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| 434 | area_g(i) = resolution_g(i,1)*resolution_g(i,2) |
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| 435 | |
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| 436 | ! |
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| 437 | ! 3 find neighbours |
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| 438 | ! |
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| 439 | imm1 = 0 |
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| 440 | IF ( ip .GT. 1 ) THEN |
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| 441 | imm1 = ip - 1 |
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| 442 | ELSEIF ( global ) THEN |
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| 443 | imm1 = iim |
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| 444 | ENDIF |
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| 445 | |
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| 446 | imp1 = 0 |
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| 447 | IF ( ip .LT. iim ) THEN |
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| 448 | imp1 = ip + 1 |
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| 449 | ELSEIF ( global ) THEN |
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| 450 | imp1 = 1 |
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| 451 | ENDIF |
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| 452 | ! |
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| 453 | ! East and West |
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| 454 | ! |
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| 455 | IF ( imp1 > 0 ) THEN |
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| 456 | neighbours_g(i,rose(3)) = correspondance(imp1,jp) |
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| 457 | ELSE |
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| 458 | neighbours_g(i,rose(3)) = -1 |
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| 459 | ENDIF |
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| 460 | IF ( imm1 > 0 ) THEN |
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| 461 | neighbours_g(i,rose(7)) = correspondance(imm1,jp) |
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| 462 | ELSE |
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| 463 | neighbours_g(i,rose(7)) = -1 |
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| 464 | ENDIF |
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| 465 | ! |
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| 466 | ! North |
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| 467 | ! |
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| 468 | IF ( jp .GT. 1 ) THEN |
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| 469 | |
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| 470 | neighbours_g(i,rose(1)) = correspondance(ip,jp-1) |
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| 471 | IF ( imp1 > 0 ) THEN |
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| 472 | neighbours_g(i,rose(2)) = correspondance(imp1,jp-1) |
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| 473 | ELSE |
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| 474 | neighbours_g(i,rose(2)) = -1 |
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| 475 | ENDIF |
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| 476 | IF ( imm1 > 0 ) THEN |
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| 477 | neighbours_g(i,rose(8)) = correspondance(imm1,jp-1) |
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| 478 | ELSE |
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| 479 | neighbours_g(i,rose(8)) = -1 |
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| 480 | ENDIF |
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| 481 | |
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| 482 | ELSE |
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| 483 | IF ( global ) THEN |
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| 484 | |
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| 485 | ! special treatment for the pole if we are really in a 2d grid |
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| 486 | |
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| 487 | IF ( ( iim .GT. 1 ) .AND. ( jjm .GT. 1 ) ) THEN |
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| 488 | ! |
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| 489 | ii = MOD(ip+iim/2-1,iim)+1 |
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| 490 | imm1l = ii - 1 |
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| 491 | IF ( imm1l .LT. 1 ) imm1l = iim |
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| 492 | imp1l = ii + 1 |
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| 493 | IF ( imp1l .GT. iim ) imp1l = 1 |
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| 494 | ! |
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| 495 | IF ( ABS( ( grid_lat(ip,jp) ) - 90. ) .LT. min_sechiba ) THEN |
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| 496 | ! the grid point sits exactly on the pole. The neighbour is situated |
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| 497 | ! at a lower latitude. |
|---|
| 498 | neighbours_g(i,rose(1)) = correspondance( ii, jp+1 ) |
|---|
| 499 | neighbours_g(i,rose(2)) = correspondance( imm1l, jp+1 ) |
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| 500 | neighbours_g(i,rose(8)) = correspondance( imp1l, jp+1 ) |
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| 501 | ELSE |
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| 502 | ! look across the North Pole |
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| 503 | neighbours_g(i,rose(1)) = correspondance( ii, jp ) |
|---|
| 504 | neighbours_g(i,rose(2)) = correspondance( imm1l, jp ) |
|---|
| 505 | neighbours_g(i,rose(8)) = correspondance( imp1l, jp ) |
|---|
| 506 | ENDIF |
|---|
| 507 | ENDIF |
|---|
| 508 | |
|---|
| 509 | ELSE |
|---|
| 510 | |
|---|
| 511 | neighbours_g(i,rose(1)) = -1 |
|---|
| 512 | neighbours_g(i,rose(2)) = -1 |
|---|
| 513 | neighbours_g(i,rose(8)) = -1 |
|---|
| 514 | |
|---|
| 515 | ENDIF |
|---|
| 516 | |
|---|
| 517 | ENDIF |
|---|
| 518 | |
|---|
| 519 | ! South |
|---|
| 520 | IF ( jp .LT. jjm ) THEN |
|---|
| 521 | |
|---|
| 522 | neighbours_g(i,rose(5)) = correspondance(ip,jp+1) |
|---|
| 523 | IF ( imp1 > 0 ) THEN |
|---|
| 524 | neighbours_g(i,rose(4)) = correspondance(imp1,jp+1) |
|---|
| 525 | ELSE |
|---|
| 526 | neighbours_g(i,rose(4)) = -1 |
|---|
| 527 | ENDIF |
|---|
| 528 | IF ( imm1 > 0 ) THEN |
|---|
| 529 | neighbours_g(i,rose(6)) = correspondance(imm1,jp+1) |
|---|
| 530 | ELSE |
|---|
| 531 | neighbours_g(i,rose(6)) = -1 |
|---|
| 532 | ENDIF |
|---|
| 533 | |
|---|
| 534 | ELSE |
|---|
| 535 | |
|---|
| 536 | IF ( global ) THEN |
|---|
| 537 | |
|---|
| 538 | ! special treatment for the pole if we are really in a 2d grid |
|---|
| 539 | |
|---|
| 540 | IF ( ( iim .GT. 1 ) .AND. ( jjm .GT. 1 ) ) THEN |
|---|
| 541 | ! |
|---|
| 542 | ii = MOD(ip+iim/2-1,iim)+1 |
|---|
| 543 | imm1l = ii - 1 |
|---|
| 544 | IF ( imm1l .LT. 1 ) imm1l = iim |
|---|
| 545 | imp1l = ii + 1 |
|---|
| 546 | IF ( imp1l .GT. iim ) imp1l = 1 |
|---|
| 547 | ! |
|---|
| 548 | IF ( ( ABS( grid_lat(ip,jp) ) - 90. ) .LT. min_sechiba ) THEN |
|---|
| 549 | ! the grid point sits exactly on the pole. The neighbour is situated |
|---|
| 550 | ! at a lower latitude. |
|---|
| 551 | neighbours_g(i,rose(5)) = correspondance( ii, jp-1 ) |
|---|
| 552 | neighbours_g(i,rose(4)) = correspondance( imm1l, jp-1 ) |
|---|
| 553 | neighbours_g(i,rose(6)) = correspondance( imp1l, jp-1 ) |
|---|
| 554 | ELSE |
|---|
| 555 | ! look across the South Pole |
|---|
| 556 | neighbours_g(i,rose(5)) = correspondance( ii, jp ) |
|---|
| 557 | neighbours_g(i,rose(4)) = correspondance( imm1l, jp ) |
|---|
| 558 | neighbours_g(i,rose(6)) = correspondance( imp1l, jp ) |
|---|
| 559 | ENDIF |
|---|
| 560 | ENDIF |
|---|
| 561 | |
|---|
| 562 | ELSE |
|---|
| 563 | |
|---|
| 564 | neighbours_g(i,rose(5)) = -1 |
|---|
| 565 | neighbours_g(i,rose(4)) = -1 |
|---|
| 566 | neighbours_g(i,rose(6)) = -1 |
|---|
| 567 | |
|---|
| 568 | ENDIF |
|---|
| 569 | ENDIF |
|---|
| 570 | |
|---|
| 571 | ENDDO |
|---|
| 572 | |
|---|
| 573 | IF ( bavard .GT. 1 ) THEN |
|---|
| 574 | WRITE(numout,*) ' > Total number of points: ',npts_glo |
|---|
| 575 | WRITE(numout,*) ' > Using default zonal resolution at',ndefault_lon,' points.' |
|---|
| 576 | WRITE(numout,*) ' > Using default meridional resolution at',ndefault_lat,' points.' |
|---|
| 577 | ENDIF |
|---|
| 578 | ! |
|---|
| 579 | ENDIF ! (root_prc) |
|---|
| 580 | |
|---|
| 581 | CALL scatter(neighbours_g,neighbours) |
|---|
| 582 | CALL scatter(resolution_g,resolution) |
|---|
| 583 | CALL scatter(area_g,area) |
|---|
| 584 | CALL bcast(min_resol) |
|---|
| 585 | CALL bcast(max_resol) |
|---|
| 586 | IF ( bavard .EQ. 5 ) THEN |
|---|
| 587 | WRITE(numout,*) ' > resolution = ',resolution |
|---|
| 588 | WRITE(numout,*) ' > rose = ',rose |
|---|
| 589 | WRITE(numout,*) ' > neighbours = ',neighbours |
|---|
| 590 | ENDIF |
|---|
| 591 | IF ( bavard .GT. 1 ) WRITE(numout,*) 'Leaving grid_stuff' |
|---|
| 592 | |
|---|
| 593 | END SUBROUTINE grid_stuff |
|---|
| 594 | |
|---|
| 595 | |
|---|
| 596 | END MODULE grid |
|---|
