[11589] | 1 | MODULE module_grid |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE module_grid *** |
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| 4 | !! ABL utilities to define and store vertical grids |
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| 5 | !!===================================================================== |
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| 6 | !! History : 2016-10 (F. Lemarié) Original code |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! FUNCTIONS : None |
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| 11 | !! SUBROUTINES : get_atm_grid, init_atm_mask, get_pot_temp |
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| 12 | !! Write_Grid_File, Init_output_File, init_target_grid |
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| 13 | !! flip_vert_dim, smooth_field |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | IMPLICIT NONE |
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| 16 | |
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| 17 | CONTAINS |
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| 18 | |
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| 19 | SUBROUTINE get_atm_grid( jpi, jpj, jpka, slp, temp, humi, Aw, Bw, & ! in |
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| 20 | & e3t, ghw ) ! out |
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| 21 | !!-------------------------------------------------------------------------- |
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| 22 | !! *** ROUTINE get_atm_grid *** |
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| 23 | !! |
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| 24 | !! ** Purpose : compute layer thickness and altitude of interfaces |
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| 25 | !! of the ECMWF atmospheric grid |
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| 26 | !! |
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| 27 | !! ** Method : |
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| 28 | !! (1) recompute the pressure levels thanks to the sea-level pressure |
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| 29 | !! (2) use the hydrostatic relation to convert pressure into altitudes |
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| 30 | !! |
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| 31 | !!--------------------------------------------------------------------------- |
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| 32 | INTEGER, INTENT(in ) :: jpi, jpj |
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| 33 | INTEGER, INTENT(in ) :: jpka |
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| 34 | REAL(8), INTENT(in ) :: slp ( 1:jpi, 1:jpj ) |
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| 35 | REAL(8), INTENT(in ) :: temp ( 1:jpi, 1:jpj, 1:jpka ) |
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| 36 | REAL(8), INTENT(in ) :: humi ( 1:jpi, 1:jpj, 1:jpka ) |
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| 37 | REAL(8), INTENT(in ) :: Aw ( 0:jpka ) |
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| 38 | REAL(8), INTENT(in ) :: Bw ( 0:jpka ) |
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| 39 | REAL(8), INTENT( out) :: e3t ( 1:jpi, 1:jpj, 1:jpka ) |
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| 40 | REAL(8) :: ghw ( 1:jpi, 1:jpj, 0:jpka ) |
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| 41 | REAL(8), PARAMETER :: g = 9.80665 |
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| 42 | REAL(8), PARAMETER :: Rd = 287.058 |
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| 43 | REAL(8), PARAMETER :: zvir = 0.609133 |
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| 44 | REAL(8), PARAMETER :: ig = 1./g |
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| 45 | !! |
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| 46 | INTEGER :: ji,jj,jk |
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| 47 | REAL(8) :: tv,ph(0:jpka) |
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| 48 | ! |
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| 49 | DO jj = 1, jpj |
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| 50 | DO ji = 1, jpi |
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| 51 | |
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| 52 | DO jk=0,jpka |
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| 53 | ph(jk) = Aw( jk ) + Bw( jk ) * slp( ji, jj ) !<-- Pa |
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| 54 | END DO |
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| 55 | |
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| 56 | DO jk=jpka,1,-1 |
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| 57 | tv = temp( ji, jj, jk ) * ( 1. + zvir*humi( ji, jj, jk ) ) !<-- Virtual temperature |
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| 58 | e3t ( ji, jj, jk ) = ig*( Rd * tv * log( ph( jk ) / ph( jk-1 ) ) ) |
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| 59 | ghw ( ji, jj, jk-1 ) = e3t( ji, jj, jk ) + ghw( ji, jj, jk ) |
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| 60 | END DO |
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| 61 | |
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| 62 | END DO |
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| 63 | END DO |
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| 64 | ! |
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| 65 | END SUBROUTINE get_atm_grid |
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| 66 | |
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| 67 | |
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| 68 | |
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| 69 | |
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| 70 | SUBROUTINE init_atm_mask( jpi, jpj, mask_file, mask_name, ln_lsm_land, tmask ) |
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| 71 | USE module_io |
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| 72 | !!--------------------------------------------------------------------- |
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| 73 | !! *** ROUTINE INIT_atm_MASK *** |
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| 74 | !! |
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| 75 | !! ** Purpose : extract the land/sea mask and remove isolated sea points |
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| 76 | !! |
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| 77 | !! ** Method : mask is 1 over the ocean and 0 over land |
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| 78 | !! |
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| 79 | !!---------------------------------------------------------------------- |
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| 80 | INTEGER, INTENT(in ) :: jpi, jpj |
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| 81 | LOGICAL, INTENT(in ) :: ln_lsm_land |
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| 82 | REAL(8) :: tmask ( 1:jpi, 1:jpj, 1 ) |
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| 83 | INTEGER :: jj, ji |
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| 84 | INTEGER :: status,ncid,varid |
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| 85 | CHARACTER(len = * ) :: mask_file, mask_name |
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| 86 | REAL(8) :: cff |
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| 87 | |
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| 88 | ! Read land-sea mask variable |
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| 89 | status = nf90_open(trim(mask_file),NF90_NOWRITE,ncid) |
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| 90 | status = nf90_inq_varid(ncid,mask_name,varid) |
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| 91 | status = nf90_get_var(ncid,varid,tmask,start=(/1,1,1/)) |
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| 92 | status = nf90_close(ncid) |
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| 93 | ! invert the mask (1 over the ocean, 0 over land if ln_lsm_land) |
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| 94 | IF(ln_lsm_land) THEN |
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| 95 | DO jj=1,jpj |
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| 96 | DO ji=1,jpi |
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| 97 | IF( tmask(ji,jj,1) <= 0. ) THEN |
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| 98 | tmask(ji,jj,1) = 1. !! Ocean points |
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| 99 | ELSE |
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| 100 | tmask(ji,jj,1) = 0. !! Land points |
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| 101 | END IF |
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| 102 | END DO |
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| 103 | END DO |
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| 104 | ENDIF |
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| 105 | ! remove some closed seas |
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| 106 | DO jj=2,jpj-1 |
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| 107 | DO ji=2,jpi-1 |
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| 108 | cff = MAX( tmask(ji+1,jj ,1),tmask(ji-1,jj ,1), & |
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| 109 | & tmask(ji ,jj+1,1),tmask(ji ,jj-1,1), & |
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| 110 | & tmask(ji+1,jj+1,1),tmask(ji-1,jj-1,1), & |
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| 111 | & tmask(ji+1,jj-1,1),tmask(ji-1,jj+1,1) ) |
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| 112 | IF( tmask( ji, jj, 1 ) .gt. 0.5 .and. cff .lt. 0.5 ) THEN |
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| 113 | tmask( ji, jj, 1 ) = 0. |
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| 114 | END IF |
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| 115 | END DO |
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| 116 | END DO |
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| 117 | WRITE(*,*)' init_atm_mask: ',mask_name,' in ',mask_file, ' OK' |
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| 118 | !!---------------------------------------------------------------------- |
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| 119 | ! |
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| 120 | END SUBROUTINE init_atm_mask |
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| 121 | |
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| 122 | |
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| 123 | |
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| 124 | SUBROUTINE get_pot_temp( jpi, jpj, jpka, slp, temp, Aw, Bw, tmask, method, hum1, z1 ) |
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| 125 | !!--------------------------------------------------------------------- |
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| 126 | !! *** ROUTINE get_pot_temp *** |
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| 127 | !! |
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| 128 | !! ** Purpose : compute the potential temperature based on the |
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| 129 | !! absolute temperature and the sea level pressure |
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| 130 | !! |
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| 131 | !! ** Method : five different ways are implemented depending on the |
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| 132 | !! value of 'method' |
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| 133 | !! (0) potential temperature = absolute temperature (not recommended) |
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| 134 | !! (1) potential temperature is computed using a local reference |
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| 135 | !! pressure equal to the sea-level-pressure |
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| 136 | !! (2) potential temperature is computed only on a perturbation of |
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| 137 | !! the absolute temperature around t0 |
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| 138 | !! (3) a local reference pressure is used consistently with AEROBULK gamma_moist |
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| 139 | !! (4) a constant global reference pressure is used |
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| 140 | !!---------------------------------------------------------------------- |
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| 141 | INTEGER, INTENT(in ) :: jpi, jpj |
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| 142 | INTEGER, INTENT(in ) :: jpka, method |
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| 143 | REAL(8), INTENT(in ) :: slp ( 1:jpi, 1:jpj ) |
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| 144 | REAL(8), INTENT(in ) :: tmask ( 1:jpi, 1:jpj ) |
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| 145 | REAL(8), INTENT(in ) :: z1 ( 1:jpi, 1:jpj ) |
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| 146 | REAL(8), INTENT(inout) :: temp ( 1:jpi, 1:jpj, 1:jpka ) |
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| 147 | REAL(8), INTENT(in ) :: hum1 ( 1:jpi, 1:jpj ) |
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| 148 | REAL(8), INTENT(in ) :: Aw ( 0:jpka ) |
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| 149 | REAL(8), INTENT(in ) :: Bw ( 0:jpka ) |
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| 150 | REAL(8), PARAMETER :: grav = 9.80665 |
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| 151 | REAL(8), PARAMETER :: R_dry = 287.058 |
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| 152 | REAL(8), PARAMETER :: R_vap = 461.495 |
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| 153 | REAL(8), PARAMETER :: Cp_dry = 1005. |
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| 154 | REAL(8), PARAMETER :: cevap = 2.5E+06 |
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| 155 | REAL(8), PARAMETER :: reps0 = R_dry / R_vap |
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| 156 | REAL(8), PARAMETER :: gamma = 2./7. |
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| 157 | REAL(8) :: pres0, gamma_moist, zrv, zirt |
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| 158 | REAL(8), PARAMETER :: t0 = 288. !<-- K |
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| 159 | !! |
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| 160 | INTEGER :: ji,jj,jk |
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| 161 | REAL(8) :: pres,ph(0:jpka), cff |
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| 162 | !! |
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| 163 | SELECT CASE ( method ) |
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| 164 | CASE(0) |
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| 165 | RETURN |
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| 166 | CASE(1) |
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| 167 | DO jj = 1, jpj |
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| 168 | DO ji = 1, jpi |
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| 169 | |
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| 170 | IF( tmask(ji,jj) .gt. 0.5 ) THEN |
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| 171 | DO jk=0,jpka |
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| 172 | ph(jk) = Aw( jk ) + Bw( jk ) * slp( ji, jj ) |
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| 173 | END DO |
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| 174 | |
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| 175 | pres0 = 0.5*(ph(jpka)+ph(jpka-1)) |
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| 176 | |
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| 177 | DO jk=1,jpka |
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| 178 | pres = 0.5*(ph(jk)+ph(jk-1)) |
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| 179 | cff = ( pres0/pres )**gamma |
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| 180 | temp( ji, jj, jk ) = cff * temp( ji, jj, jk ) |
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| 181 | END DO |
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| 182 | ELSE |
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| 183 | temp( ji, jj, 1:jpka ) = 273.15 |
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| 184 | END IF |
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| 185 | END DO |
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| 186 | END DO |
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| 187 | CASE(2) |
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| 188 | pres0 = 100900. |
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| 189 | DO jj = 1, jpj |
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| 190 | DO ji = 1, jpi |
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| 191 | IF( tmask(ji,jj) .gt. 0.5 ) THEN |
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| 192 | DO jk=0,jpka |
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| 193 | ph(jk) = Aw( jk ) + Bw( jk ) * slp( ji, jj ) |
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| 194 | END DO |
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| 195 | |
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| 196 | DO jk=1,jpka |
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| 197 | pres = 0.5*(ph(jk)+ph(jk-1)) |
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| 198 | cff = ( pres0/pres )**gamma |
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| 199 | temp( ji, jj, jk ) = cff * ( temp( ji, jj, jk ) - t0 ) + t0 |
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| 200 | END DO |
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| 201 | ELSE |
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| 202 | temp( ji, jj, 1:jpka ) = 273.15 |
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| 203 | END IF |
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| 204 | END DO |
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| 205 | END DO |
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| 206 | CASE(3) |
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| 207 | DO jj = 1, jpj |
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| 208 | DO ji = 1, jpi |
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| 209 | IF( tmask(ji,jj) .gt. 0.5 ) THEN |
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| 210 | DO jk=0,jpka |
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| 211 | ph(jk) = Aw( jk ) + Bw( jk ) * slp( ji, jj ) |
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| 212 | END DO |
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| 213 | !! compute gamma_moist consistently with AEROBULK |
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| 214 | zrv = hum1( ji, jj ) / ( 1. - hum1( ji, jj ) ) |
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| 215 | zirt = 1. / ( R_dry * temp( ji, jj, jpka ) ) |
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| 216 | gamma_moist = grav * ( 1. + cevap*zrv*ziRT ) & |
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| 217 | & / ( Cp_dry + cevap*cevap*zrv*reps0*ziRT/temp( ji, jj, jpka ) ) |
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| 218 | !! pressure at z = z1 |
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| 219 | pres = 0.5*(ph(jpka)+ph(jpka-1)) |
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| 220 | pres0 = pres * ( 1. + gamma_moist * z1(ji,jj) / temp( ji, jj, jpka ) )**(1./gamma) |
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| 221 | DO jk=1,jpka |
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| 222 | pres = 0.5*(ph(jk)+ph(jk-1)) |
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| 223 | cff = ( pres0/pres )**gamma |
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| 224 | temp( ji, jj, jk ) = cff * temp( ji, jj, jk ) |
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| 225 | END DO |
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| 226 | ELSE |
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| 227 | temp( ji, jj, 1:jpka ) = 273.15 |
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| 228 | END IF |
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| 229 | END DO |
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| 230 | END DO |
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| 231 | CASE(4) |
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| 232 | pres0 = 100900. |
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| 233 | DO jj = 1, jpj |
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| 234 | DO ji = 1, jpi |
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| 235 | IF( tmask(ji,jj) .gt. 0.5 ) THEN |
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| 236 | DO jk=0,jpka |
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| 237 | ph(jk) = Aw( jk ) + Bw( jk ) * slp( ji, jj ) |
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| 238 | END DO |
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| 239 | |
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| 240 | DO jk=1,jpka |
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| 241 | pres = 0.5*(ph(jk)+ph(jk-1)) |
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| 242 | cff = ( pres0/pres )**gamma |
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| 243 | temp( ji, jj, jk ) = cff * temp( ji, jj, jk ) |
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| 244 | END DO |
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| 245 | ELSE |
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| 246 | temp( ji, jj, 1:jpka ) = 273.15 |
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| 247 | END IF |
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| 248 | END DO |
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| 249 | END DO |
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| 250 | END SELECT |
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| 251 | ! |
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| 252 | END SUBROUTINE get_pot_temp |
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| 253 | |
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| 254 | |
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| 255 | SUBROUTINE Write_Grid_File( jpka, ght, ghw, e3t, e3w, grd_file ) |
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| 256 | !! |
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| 257 | USE module_io |
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| 258 | !!--------------------------------------------------------------------- |
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| 259 | !! *** ROUTINE write_Grid_File *** |
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| 260 | !! |
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| 261 | !! ** Purpose : write the ABL grid file |
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| 262 | !! |
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| 263 | !! ** Method : store the layer thickness and altitude of grid points |
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| 264 | !! |
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| 265 | !!---------------------------------------------------------------------- |
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| 266 | INTEGER, INTENT(in ) :: jpka |
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| 267 | REAL(8), INTENT(in ) :: ght ( 1:jpka+1 ) |
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| 268 | REAL(8), INTENT(in ) :: ghw ( 1:jpka+1 ) |
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| 269 | REAL(8), INTENT(in ) :: e3t ( 1:jpka+1 ) |
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| 270 | REAL(8), INTENT(in ) :: e3w ( 1:jpka+1 ) |
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| 271 | CHARACTER(*), INTENT(in ) :: grd_file |
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| 272 | !! |
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| 273 | INTEGER :: status, ncid |
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| 274 | !! |
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| 275 | status = nf90_create( grd_file, NF90_WRITE, ncid ) |
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| 276 | status = nf90_close ( ncid ) |
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| 277 | !! |
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| 278 | Call Write_Ncdf_dim ( 'jpka' , grd_file, jpka+1 ) |
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| 279 | Call Write_Ncdf_var ( 'ghw', 'jpka', grd_file, ghw, 'double' ) |
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| 280 | Call Write_Ncdf_var ( 'ght', 'jpka', grd_file, ght, 'double' ) |
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| 281 | Call Write_Ncdf_var ( 'e3t', 'jpka', grd_file, e3t, 'double' ) |
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| 282 | Call Write_Ncdf_var ( 'e3w', 'jpka', grd_file, e3w, 'double' ) |
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| 283 | ! |
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| 284 | END SUBROUTINE Write_Grid_File |
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| 285 | |
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| 286 | |
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| 287 | |
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| 288 | |
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| 289 | |
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| 290 | SUBROUTINE Init_output_File ( jpi, jpj, jpka, atm_file, abl_file, tmask ) |
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| 291 | !! |
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| 292 | USE module_io |
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| 293 | !!--------------------------------------------------------------------- |
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| 294 | !! *** ROUTINE Init_output_File *** |
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| 295 | !! |
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| 296 | !! ** Purpose : write longitude, latitude and mask in the output file |
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| 297 | !! |
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| 298 | !! ** Method : define dimensions in the netcdf file |
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| 299 | !!---------------------------------------------------------------------- |
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| 300 | INTEGER, INTENT(in ) :: jpi,jpj,jpka |
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| 301 | CHARACTER(*), INTENT(in ) :: atm_file |
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| 302 | CHARACTER(*), INTENT(in ) :: abl_file |
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| 303 | REAL(8) :: tmask(1:jpi,1:jpj) |
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| 304 | !! |
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| 305 | REAL(8), ALLOCATABLE, DIMENSION(: ) :: tmp1d |
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| 306 | INTEGER :: status, ncid |
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| 307 | CHARACTER(len= 20),DIMENSION(4) :: dimnames |
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| 308 | !! |
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| 309 | status = nf90_create( abl_file, NF90_WRITE, ncid ) |
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| 310 | status = nf90_close ( ncid ) |
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| 311 | !! |
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| 312 | CALL Write_Ncdf_dim ( 'lon' , abl_file, jpi ) |
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| 313 | CALL Write_Ncdf_dim ( 'lat' , abl_file, jpj ) |
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| 314 | CALL Write_Ncdf_dim ( 'jpka' , abl_file, jpka+1 ) |
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| 315 | CALL Write_Ncdf_dim ( 'time' , abl_file, 0 ) |
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| 316 | ! |
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| 317 | ALLOCATE( tmp1d( 1:jpi ) ) |
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| 318 | ! |
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| 319 | CALL Read_Ncdf_var ( 'lon', atm_file, tmp1d ) |
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| 320 | CALL Write_Ncdf_var ( 'lon', 'lon', abl_file, tmp1d, 'double' ) |
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| 321 | ! |
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| 322 | DEALLOCATE( tmp1d ) |
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| 323 | ! |
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| 324 | ALLOCATE( tmp1d( 1:jpj ) ) |
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| 325 | ! |
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| 326 | CALL Read_Ncdf_var ( 'lat', atm_file, tmp1d ) |
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| 327 | CALL Write_Ncdf_var( 'lat', 'lat', abl_file, tmp1d, 'double' ) |
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| 328 | ! |
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| 329 | DEALLOCATE( tmp1d ) |
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| 330 | ! |
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| 331 | dimnames(1) = 'lon' |
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| 332 | dimnames(2) = 'lat' |
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| 333 | CALL Write_Ncdf_var( 'lsm', dimnames , abl_file, tmask, 'float' ) |
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| 334 | ! |
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| 335 | END SUBROUTINE Init_output_File |
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| 336 | |
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| 337 | |
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| 338 | SUBROUTINE Init_output_File_c1d ( jpi, jpj, jpka, atm_file, abl_file, tmask, iloc, jloc ) |
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| 339 | !! |
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| 340 | USE module_io |
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| 341 | !!--------------------------------------------------------------------- |
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| 342 | !! *** ROUTINE Init_output_File *** |
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| 343 | !! |
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| 344 | !! ** Purpose : write longitude, latitude and mask in the output file |
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| 345 | !! |
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| 346 | !! ** Method : define dimensions in the netcdf file |
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| 347 | !!---------------------------------------------------------------------- |
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| 348 | INTEGER, INTENT(in ) :: iloc,jloc,jpi,jpj,jpka |
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| 349 | CHARACTER(*), INTENT(in ) :: atm_file |
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| 350 | CHARACTER(*), INTENT(in ) :: abl_file |
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| 351 | REAL(8) :: tmask(1:jpi,1:jpj) |
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| 352 | !! |
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| 353 | REAL(8), ALLOCATABLE, DIMENSION(: ) :: tmp1d |
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| 354 | REAL(8) :: tmp1d_loc(3),tmp2d_loc(3,3) |
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| 355 | INTEGER :: status, ncid |
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| 356 | CHARACTER(len= 20),DIMENSION(4) :: dimnames |
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| 357 | !! |
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| 358 | status = nf90_create( abl_file, NF90_WRITE, ncid ) |
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| 359 | status = nf90_close ( ncid ) |
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| 360 | !! |
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| 361 | CALL Write_Ncdf_dim ( 'lon' , abl_file, 3 ) |
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| 362 | CALL Write_Ncdf_dim ( 'lat' , abl_file, 3 ) |
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| 363 | CALL Write_Ncdf_dim ( 'jpka' , abl_file, jpka+1 ) |
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| 364 | CALL Write_Ncdf_dim ( 'time' , abl_file, 0 ) |
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| 365 | ! |
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| 366 | ALLOCATE( tmp1d ( 1:jpi ) ) |
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| 367 | ! |
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| 368 | CALL Read_Ncdf_var ( 'lon', atm_file, tmp1d ) |
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| 369 | tmp1d_loc( 1 ) = tmp1d(iloc) |
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| 370 | tmp1d_loc( 2 ) = tmp1d(iloc) |
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| 371 | tmp1d_loc( 3 ) = tmp1d(iloc) |
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| 372 | CALL Write_Ncdf_var ( 'lon', 'lon', abl_file, tmp1d_loc, 'double' ) |
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| 373 | print*,'1D column located at : ' |
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| 374 | print*,'longitude = ',tmp1d(iloc),' degree_east' |
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| 375 | ! |
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| 376 | DEALLOCATE( tmp1d ) |
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| 377 | ! |
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| 378 | ALLOCATE( tmp1d( 1:jpj ) ) |
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| 379 | ! |
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| 380 | CALL Read_Ncdf_var ( 'lat', atm_file, tmp1d ) |
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| 381 | tmp1d_loc( 1 ) = tmp1d(jloc) |
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| 382 | tmp1d_loc( 2 ) = tmp1d(jloc) |
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| 383 | tmp1d_loc( 3 ) = tmp1d(jloc) |
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| 384 | CALL Write_Ncdf_var( 'lat', 'lat', abl_file, tmp1d_loc, 'double' ) |
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| 385 | print*,'latitude = ',tmp1d(jloc),' degree_north' |
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| 386 | ! |
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| 387 | DEALLOCATE( tmp1d ) |
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| 388 | ! |
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| 389 | tmp2d_loc(:,:) = tmask(iloc,jloc) |
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| 390 | dimnames(1) = 'lon' |
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| 391 | dimnames(2) = 'lat' |
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| 392 | CALL Write_Ncdf_var( 'lsm', dimnames , abl_file, tmp2d_loc, 'float' ) |
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| 393 | ! |
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| 394 | END SUBROUTINE Init_output_File_c1d |
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| 395 | |
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| 396 | |
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| 397 | SUBROUTINE init_target_grid( jpka, ght, ghw, e3t, e3w, hmax, hc, theta_s, & |
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| 398 | & force_z1, z1 ) |
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| 399 | !!--------------------------------------------------------------------- |
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| 400 | !! *** ROUTINE init_target_grid *** |
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| 401 | !! |
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| 402 | !! ** Purpose : compute the layer thickness and altitude of grid points |
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| 403 | !! for the ABL model based on the namelist parameter values |
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| 404 | !! |
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| 405 | !! ** Method : depending on the logical 'force_z1' two methods are used |
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| 406 | !! (1) true -> the user chooses the value of the first vertical |
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| 407 | !! grid point. A few Newton iterations are used to correct |
---|
| 408 | !! the value of the parameter theta_s to satisfy this constraint |
---|
| 409 | !! (2) false -> use the parameter values in the namelist to |
---|
| 410 | !! compute the vertical grid |
---|
| 411 | !! |
---|
| 412 | !!---------------------------------------------------------------------- |
---|
| 413 | INTEGER, intent(in ) :: jpka |
---|
| 414 | REAL(8), intent(in ) :: hmax,hc |
---|
| 415 | REAL(8), intent(inout) :: theta_s |
---|
| 416 | LOGICAL, intent(in ) :: force_z1 |
---|
| 417 | REAL(8), intent(in ) :: z1 |
---|
| 418 | !! |
---|
| 419 | REAL(8), intent( out) :: ghw( 1:jpka+1 ) |
---|
| 420 | REAL(8), intent( out) :: ght( 1:jpka+1 ) |
---|
| 421 | REAL(8), intent( out) :: e3w( 1:jpka+1 ) |
---|
| 422 | REAL(8), intent( out) :: e3t( 1:jpka+1 ) |
---|
| 423 | !! |
---|
| 424 | REAL(8) :: ds,cff,sc_w,sc_r,alpha,x |
---|
| 425 | REAL(8) :: fx,fxp |
---|
| 426 | INTEGER :: jk,maxiter,jiter |
---|
| 427 | REAL(8), PARAMETER :: tol = 1.E-12 |
---|
| 428 | !! |
---|
| 429 | IF(force_z1) THEN |
---|
| 430 | IF(z1.LT.10.) THEN |
---|
| 431 | WRITE(*,*) " ERROR: z1 < 1st ECMWF level height (~10m)" |
---|
| 432 | STOP |
---|
| 433 | ELSE |
---|
| 434 | !! Newton iterations to find the appropriate value of theta_s |
---|
| 435 | maxiter = 1000 |
---|
| 436 | x = theta_s |
---|
| 437 | sc_r = (float(1)-0.5)/float(jpka) |
---|
| 438 | alpha = (z1 - hc*sc_r) / (hmax - hc) |
---|
| 439 | ! |
---|
| 440 | DO jiter=1,maxiter |
---|
| 441 | fx = (sinh(sc_r*x)/sinh(x))-alpha |
---|
| 442 | fxp = (sc_r*cosh(sc_r*x)-sinh(sc_r*x)*cosh(x)/sinh(x))/sinh(x) |
---|
| 443 | IF( abs(fx) .lt. tol ) THEN |
---|
| 444 | exit |
---|
| 445 | ENDIF |
---|
| 446 | cff = fx / fxp |
---|
| 447 | x = x - cff |
---|
| 448 | ENDDO |
---|
| 449 | ! |
---|
| 450 | theta_s = x |
---|
| 451 | END IF |
---|
| 452 | ! |
---|
| 453 | ENDIF |
---|
| 454 | ! |
---|
| 455 | ds =1./float(jpka) |
---|
| 456 | cff=(hmax-hc)/sinh(theta_s) |
---|
| 457 | ! |
---|
| 458 | DO jk = jpka,1,-1 |
---|
| 459 | sc_w = ds*float(jk) |
---|
| 460 | ghw(jk+1) = hc*sc_w + cff*sinh(theta_s*sc_w) |
---|
| 461 | sc_r = ds*(float(jk)-0.5) |
---|
| 462 | ght(jk+1) = hc*sc_r + cff*sinh(theta_s*sc_r) |
---|
| 463 | END DO |
---|
| 464 | ! |
---|
| 465 | ghw(1) = 0. |
---|
| 466 | e3t(1) = 0. |
---|
| 467 | ght(1) = 0. |
---|
| 468 | ! |
---|
| 469 | DO jk = 2,jpka+1 |
---|
| 470 | e3t(jk) = ghw(jk)-ghw(jk-1) |
---|
| 471 | END DO |
---|
| 472 | ! |
---|
| 473 | DO jk=1,jpka |
---|
| 474 | e3w(jk) = ght(jk+1)-ght(jk) |
---|
| 475 | END DO |
---|
| 476 | ! |
---|
| 477 | e3w(jpka+1) = ghw(jpka+1) - ght(jpka+1) |
---|
| 478 | ! |
---|
| 479 | IF(force_z1) THEN !++ print the new parameter values |
---|
| 480 | print*,'*** Updated grid parameters' |
---|
| 481 | print*,'theta_s = ',theta_s |
---|
| 482 | print*,'hc = ',hc |
---|
| 483 | print*,'hmax = ',hmax |
---|
| 484 | print*,'ght(2) = ',ght(2) |
---|
| 485 | ENDIF |
---|
| 486 | ! |
---|
| 487 | END SUBROUTINE init_target_grid |
---|
| 488 | |
---|
| 489 | |
---|
| 490 | |
---|
| 491 | |
---|
| 492 | |
---|
| 493 | |
---|
| 494 | SUBROUTINE flip_vert_dim( kstr, kend, jpi, jpj, tabin ) |
---|
| 495 | !!--------------------------------------------------------------------- |
---|
| 496 | !! *** ROUTINE flip_vert_dim *** |
---|
| 497 | !! |
---|
| 498 | !! ** Purpose : flip the vertical axis of the array tabin so that |
---|
| 499 | !! the vertical grid goes from k=kstr at the bottom |
---|
| 500 | !! of the ABL to k=kend at the top |
---|
| 501 | !!---------------------------------------------------------------------- |
---|
| 502 | INTEGER, intent(in ) :: kstr,kend |
---|
| 503 | INTEGER, intent(in ) :: jpi, jpj |
---|
| 504 | REAL(8), intent(inout) :: tabin( 1:jpi, 1:jpj, kstr:kend ) |
---|
| 505 | !! |
---|
| 506 | INTEGER :: ji,jj,jk,ks |
---|
| 507 | REAL(8) :: tabfl(kstr:kend) |
---|
| 508 | ! |
---|
| 509 | DO jj = 1,jpj |
---|
| 510 | DO ji = 1,jpi |
---|
| 511 | DO jk=kstr,kend |
---|
| 512 | ks=(kend-jk)+kstr |
---|
| 513 | tabfl(ks) = tabin( ji, jj, jk ) |
---|
| 514 | END DO |
---|
| 515 | tabin( ji, jj, kstr:kend ) = tabfl( kstr:kend ) |
---|
| 516 | END DO |
---|
| 517 | END DO |
---|
| 518 | ! |
---|
| 519 | END SUBROUTINE flip_vert_dim |
---|
| 520 | |
---|
| 521 | |
---|
| 522 | |
---|
| 523 | |
---|
| 524 | |
---|
| 525 | |
---|
| 526 | |
---|
| 527 | SUBROUTINE smooth_field( jpi, jpj, varin, tmask, niter ) |
---|
| 528 | !!--------------------------------------------------------------------- |
---|
| 529 | !! *** ROUTINE smooth_field *** |
---|
| 530 | !! |
---|
| 531 | !! ** Purpose : smooth the sea level pressure over the ocean |
---|
| 532 | !! to attenuate Gibbs oscillation |
---|
| 533 | !! ** Method : a 9-point isotropic laplacian filter is applied |
---|
| 534 | !! iteratively on ocean grid points only |
---|
| 535 | !! |
---|
| 536 | !! Proper treatment of the periodicity is still not yet implemented |
---|
| 537 | !! |
---|
| 538 | !!---------------------------------------------------------------------- |
---|
| 539 | INTEGER, INTENT(in ) :: jpi, jpj, niter |
---|
| 540 | REAL(8), INTENT(in ) :: tmask ( 1:jpi, 1:jpj ) |
---|
| 541 | REAL(8), INTENT(inout) :: varin ( 1:jpi, 1:jpj ) |
---|
| 542 | INTEGER :: ji,jj,nit |
---|
| 543 | REAL(8) :: smth_a,smth_b,umask,vmask |
---|
| 544 | REAL(8) :: FX ( 0:jpi , 0:jpj+1 ) |
---|
| 545 | REAL(8) :: FE1( 0:jpi+1, 0:jpj ) |
---|
| 546 | REAL(8) :: FE ( 1:jpi , 0:jpj ) |
---|
| 547 | !! |
---|
| 548 | !!========================================================= |
---|
| 549 | !! |
---|
| 550 | ! Hanning filter |
---|
| 551 | !smth_a = 1./8. |
---|
| 552 | !smth_b = 1./4. |
---|
| 553 | ! 9-point isotropic laplacian filter |
---|
| 554 | smth_a = 1./12. |
---|
| 555 | smth_b = 3./16. |
---|
| 556 | |
---|
| 557 | FX ( 0:jpi , 0:jpj+1 ) = 0. |
---|
| 558 | FE1( 0:jpi+1, 0:jpj ) = 0. |
---|
| 559 | FE ( 1:jpi , 0:jpj ) = 0. |
---|
| 560 | |
---|
| 561 | !!+++++++++ |
---|
| 562 | DO nit = 1,niter |
---|
| 563 | !!+++++++++ |
---|
| 564 | DO jj=1,jpj |
---|
| 565 | DO ji=1,jpi-1 |
---|
| 566 | umask = tmask(ji,jj)*tmask(ji+1,jj) |
---|
| 567 | FX ( ji, jj ) = ( varin( ji+1,jj ) - varin( ji ,jj ) ) * umask |
---|
| 568 | END DO |
---|
| 569 | END DO |
---|
| 570 | FX( 0 , 1:jpj ) = FX( jpi-1, 1:jpj ) |
---|
| 571 | FX ( jpi, 1:jpj ) = FX( 1, 1:jpj ) |
---|
| 572 | FX( 0:jpi, 0 ) = FX( 0:jpi, 1 ) |
---|
| 573 | FX( 0:jpi, jpj+1 ) = FX( 0:jpi, jpj) |
---|
| 574 | !! |
---|
| 575 | DO jj=1,jpj-1 |
---|
| 576 | DO ji=1,jpi |
---|
| 577 | vmask = tmask(ji,jj)*tmask(ji,jj+1) |
---|
| 578 | FE1( ji, jj ) = ( varin( ji, jj+1 ) - varin( ji ,jj ) ) * vmask |
---|
| 579 | END DO |
---|
| 580 | END DO |
---|
| 581 | !! |
---|
| 582 | FE1( 0 , 1:jpj-1 ) = FE1( jpi , 1:jpj-1 ) |
---|
| 583 | FE1( jpi+1 , 1:jpj-1 ) = FE1( 1 , 1:jpj-1 ) |
---|
| 584 | FE1( 0:jpi+1, 0 ) = 0. |
---|
| 585 | FE1( 0:jpi+1, jpj ) = 0. |
---|
| 586 | !! |
---|
| 587 | DO jj=0,jpj |
---|
| 588 | DO ji=1,jpi |
---|
| 589 | FE ( ji, jj ) = FE1( ji, jj ) & |
---|
| 590 | & + smth_a*( FX ( ji, jj+1 ) + FX( ji-1, jj ) & |
---|
| 591 | & - FX ( ji, jj ) - FX( ji-1, jj+1 ) ) |
---|
| 592 | END DO |
---|
| 593 | END DO |
---|
| 594 | !! |
---|
| 595 | DO jj = 1, jpj |
---|
| 596 | DO ji = 0,jpi |
---|
| 597 | FX( ji, jj ) = FX( ji, jj ) & |
---|
| 598 | & + smth_a*( FE1( ji+1, jj ) + FE1( ji , jj-1 ) & |
---|
| 599 | & -FE1( ji , jj ) - FE1( ji+1, jj-1 ) ) |
---|
| 600 | END DO |
---|
| 601 | DO ji = 1,jpi |
---|
| 602 | varin( ji ,jj ) = varin( ji ,jj ) & |
---|
| 603 | & + tmask(ji,jj) * smth_b * ( & |
---|
| 604 | & FX( ji, jj ) - FX( ji-1, jj ) & |
---|
| 605 | & +FE( ji, jj ) - FE( ji, jj-1 ) ) |
---|
| 606 | END DO |
---|
| 607 | END DO |
---|
| 608 | !! |
---|
| 609 | !!+++++++++ |
---|
| 610 | END DO |
---|
| 611 | !!+++++++++ |
---|
| 612 | |
---|
| 613 | END SUBROUTINE smooth_field |
---|
| 614 | |
---|
| 615 | |
---|
| 616 | |
---|
| 617 | |
---|
| 618 | |
---|
| 619 | |
---|
| 620 | |
---|
| 621 | |
---|
| 622 | |
---|
| 623 | |
---|
| 624 | |
---|
| 625 | |
---|
| 626 | |
---|
| 627 | |
---|
| 628 | |
---|
| 629 | |
---|
| 630 | |
---|
| 631 | |
---|
| 632 | |
---|
| 633 | |
---|
| 634 | |
---|
| 635 | |
---|
| 636 | |
---|
| 637 | ! SUBROUTINE DTV_Filter( jpi, jpj, varin, tmask, niter, time ) |
---|
| 638 | ! USE module_io |
---|
| 639 | ! !!--------------------------------------------------------------------- |
---|
| 640 | ! !! *** ROUTINE DTV_Filter *** |
---|
| 641 | ! !! |
---|
| 642 | ! !! ** Purpose : |
---|
| 643 | ! !! |
---|
| 644 | ! !! ** Method : |
---|
| 645 | ! !! |
---|
| 646 | ! !! ** Action : |
---|
| 647 | ! !!---------------------------------------------------------------------- |
---|
| 648 | ! INTEGER, INTENT(in ) :: jpi, jpj, niter, time |
---|
| 649 | ! REAL(8), INTENT(in ) :: tmask ( 1:jpi, 1:jpj ) |
---|
| 650 | ! REAL(8), INTENT(inout) :: varin ( 1:jpi, 1:jpj ) |
---|
| 651 | ! INTEGER :: jn, jj, ji, nit, nt_n, nt_a, nl2 |
---|
| 652 | ! REAL(8) :: var0,mean,sigma2,cff,lambda |
---|
| 653 | ! REAL(8) :: FX(0:jpi+1,0:jpj+1) |
---|
| 654 | ! REAL(8) :: FE(0:jpi+1,0:jpj+1) |
---|
| 655 | ! REAL(8) :: FL(0:jpi+1,0:jpj+1) |
---|
| 656 | ! REAL(8) :: FR(0:jpi+1,0:jpj+1) |
---|
| 657 | ! REAL(8) :: wrk ( 1:jpi, 1:jpj, 2 ) |
---|
| 658 | ! REAL(8) :: div ( 0:jpi+1, 0:jpj+1 ), diag |
---|
| 659 | ! REAL(8), PARAMETER :: rsmall = 1.E-08 |
---|
| 660 | ! REAL(8), PARAMETER :: rbig = 1.E+14 |
---|
| 661 | ! REAL(8) :: umask, vmask, fmask, wght(8), dt |
---|
| 662 | ! REAL(8) :: L2norm_n, L2norm_a |
---|
| 663 | ! REAL(8), ALLOCATABLE, DIMENSION(: ) :: tmp1d |
---|
| 664 | ! INTEGER :: status,ncid,varid1,varid2,dimid1,dimid2 |
---|
| 665 | ! !!========================================================= |
---|
| 666 | ! CHARACTER(len= 3 ) :: nn |
---|
| 667 | ! CHARACTER(len = 500) :: erai_file, smth_file |
---|
| 668 | ! LOGICAL :: ln_diag_smoothing |
---|
| 669 | ! ln_diag_smoothing = .true. |
---|
| 670 | ! IF( ln_diag_smoothing ) THEN |
---|
| 671 | ! erai_file = '/Users/florianlemarie/Documents/INRIA/SIMBAD/ERA_INTERIM_DECEMBRE_2015/phi_ml1_6h_erai_201512.nc' |
---|
| 672 | ! WRITE(nn,'(I3)') time |
---|
| 673 | ! DO ji=1,3 |
---|
| 674 | ! IF(nn(ji:ji)==' ') nn(ji:ji)='0' |
---|
| 675 | ! END DO |
---|
| 676 | ! |
---|
| 677 | ! smth_file = 'smoothing_results_DTV_'//nn//'.nc' |
---|
| 678 | ! status = nf90_create( trim(smth_file) , NF90_WRITE, ncid ) |
---|
| 679 | ! status = nf90_close ( ncid ) |
---|
| 680 | ! ! |
---|
| 681 | ! CALL Write_Ncdf_dim ( 'lon' , trim(smth_file) , jpi ) |
---|
| 682 | ! CALL Write_Ncdf_dim ( 'lat' , trim(smth_file) , jpj ) |
---|
| 683 | ! ! |
---|
| 684 | ! ALLOCATE( tmp1d( 1:jpi ) ) |
---|
| 685 | ! CALL Read_Ncdf_var ( 'lon', erai_file, tmp1d ) |
---|
| 686 | ! CALL Write_Ncdf_var ( 'lon', 'lon', trim(smth_file), tmp1d, 'double' ) |
---|
| 687 | ! DEALLOCATE( tmp1d ) |
---|
| 688 | ! ! |
---|
| 689 | ! ALLOCATE( tmp1d( 1:jpj ) ) |
---|
| 690 | ! CALL Read_Ncdf_var ( 'lat', erai_file, tmp1d ) |
---|
| 691 | ! CALL Write_Ncdf_var( 'lat', 'lat', trim(smth_file), tmp1d, 'double' ) |
---|
| 692 | ! DEALLOCATE( tmp1d ) |
---|
| 693 | ! ! |
---|
| 694 | ! status = nf90_open(trim(smth_file),NF90_WRITE,ncid) |
---|
| 695 | ! status = nf90_inq_dimid(ncid, 'lon', dimid1) |
---|
| 696 | ! status = nf90_inq_dimid(ncid, 'lat', dimid2) |
---|
| 697 | ! status = nf90_redef(ncid) |
---|
| 698 | ! status = nf90_def_var(ncid,'varinp',nf90_double,(/dimid1,dimid2/),varid1) |
---|
| 699 | ! status = nf90_def_var(ncid,'varout',nf90_double,(/dimid1,dimid2/),varid2) |
---|
| 700 | ! status = nf90_enddef(ncid) |
---|
| 701 | ! ! |
---|
| 702 | ! ! |
---|
| 703 | ! status = nf90_put_var(ncid,varid1,varin) |
---|
| 704 | ! END IF |
---|
| 705 | ! !!========================================================= |
---|
| 706 | ! nit = 0 |
---|
| 707 | ! nl2 = 0 |
---|
| 708 | ! L2norm_a = 0. |
---|
| 709 | ! L2norm_n = rbig |
---|
| 710 | ! nt_n = 1 + MOD( nit , 2 ) |
---|
| 711 | ! nt_a = 1 + MOD( nit+1, 2 ) |
---|
| 712 | ! var0 = varin( nint(0.5*jpi) , nint(0.5*jpj) ) |
---|
| 713 | ! varin( 1:jpi, 1:jpj ) = varin( 1:jpi, 1:jpj ) - var0 |
---|
| 714 | ! wrk ( 1:jpi, 1:jpj, nt_n ) = varin( 1:jpi, 1:jpj ) |
---|
| 715 | ! !! Compute the mean first |
---|
| 716 | ! mean = Get_Mean ( jpi , jpj, varin, tmask ) |
---|
| 717 | ! sigma2 = Get_Vari ( jpi , jpj, varin, tmask, mean ) |
---|
| 718 | ! !! |
---|
| 719 | ! print*,'mean value over the ocean = ',mean + var0 |
---|
| 720 | ! print*,'variance of the input field = ',sigma2 |
---|
| 721 | ! !! |
---|
| 722 | ! lambda = (1. / sigma2 ) |
---|
| 723 | ! dt = 1. / (16.+lambda) |
---|
| 724 | ! diag = 0. |
---|
| 725 | ! |
---|
| 726 | ! !!>>>>>>>>>>>>>>>> |
---|
| 727 | ! DO nit = 1,niter |
---|
| 728 | ! !!>>>>>>>>>>>>>>>> |
---|
| 729 | ! FX(0:jpi+1,0:jpj+1) = 0. |
---|
| 730 | ! FE(0:jpi+1,0:jpj+1) = 0. |
---|
| 731 | ! FL(0:jpi+1,0:jpj+1) = 0. |
---|
| 732 | ! FR(0:jpi+1,0:jpj+1) = 0. |
---|
| 733 | ! !! |
---|
| 734 | ! DO jj = 1,jpj |
---|
| 735 | ! DO ji = 1,jpi-1 |
---|
| 736 | ! umask = tmask(ji,jj)*tmask(ji+1,jj) |
---|
| 737 | ! FX( ji, jj ) = umask * ( wrk( ji+1, jj, nt_n ) - wrk( ji, jj, nt_n ) ) |
---|
| 738 | ! END DO |
---|
| 739 | ! END DO |
---|
| 740 | ! !! |
---|
| 741 | ! DO jj = 1,jpj-1 |
---|
| 742 | ! DO ji = 1,jpi |
---|
| 743 | ! vmask = tmask(ji,jj)*tmask(ji,jj+1) |
---|
| 744 | ! FE( ji, jj ) = vmask * ( wrk( ji, jj+1, nt_n ) - wrk( ji, jj, nt_n ) ) |
---|
| 745 | ! END DO |
---|
| 746 | ! END DO |
---|
| 747 | ! !! |
---|
| 748 | ! DO jj = 1,jpj-1 |
---|
| 749 | ! DO ji = 1,jpi-1 |
---|
| 750 | ! fmask = tmask(ji,jj)*tmask(ji+1,jj+1)*diag |
---|
| 751 | ! FL( ji, jj ) = fmask * ( wrk( ji+1, jj+1, nt_n ) - wrk( ji , jj, nt_n ) ) |
---|
| 752 | ! fmask = tmask(ji+1,jj)*tmask(ji,jj+1)*diag |
---|
| 753 | ! FR( ji, jj ) = fmask * ( wrk( ji , jj+1, nt_n ) - wrk( ji+1, jj, nt_n ) ) |
---|
| 754 | ! END DO |
---|
| 755 | ! END DO |
---|
| 756 | ! !! |
---|
| 757 | ! div( 0:jpi+1, 0:jpj+1 ) = rsmall |
---|
| 758 | ! !! |
---|
| 759 | ! DO jj = 1,jpj+1 |
---|
| 760 | ! DO ji = 1,jpi+1 |
---|
| 761 | ! div(ji,jj) = MAX( sqrt( FX(ji,jj)**2 + FX(ji-1,jj )**2 + FE(ji,jj )**2 + FX(ji,jj-1)**2 & |
---|
| 762 | ! & + FL(ji,jj)**2 + FL(ji-1,jj-1)**2 + FR(ji,jj-1)**2 + FR(ji-1,jj)**2 ), rsmall ) |
---|
| 763 | ! END DO |
---|
| 764 | ! END DO |
---|
| 765 | ! |
---|
| 766 | ! |
---|
| 767 | ! |
---|
| 768 | ! |
---|
| 769 | ! DO jj=1,jpj |
---|
| 770 | ! DO ji=1,jpi |
---|
| 771 | ! IF( div(ji,jj) .eq. rsmall .or. tmask(ji,jj).lt.0.5 ) THEN |
---|
| 772 | ! wrk(ji,jj,nt_a) = wrk(ji,jj,nt_n) |
---|
| 773 | ! ELSE |
---|
| 774 | ! wght(1) = 1. + div(ji,jj) / div(ji+1,jj ) |
---|
| 775 | ! wght(2) = 1. + div(ji,jj) / div(ji-1,jj ) |
---|
| 776 | ! wght(3) = 1. + div(ji,jj) / div(ji ,jj+1) |
---|
| 777 | ! wght(4) = 1. + div(ji,jj) / div(ji ,jj-1) |
---|
| 778 | ! wght(5) = 1. + div(ji,jj) / div(ji+1,jj+1) |
---|
| 779 | ! wght(6) = 1. + div(ji,jj) / div(ji-1,jj+1) |
---|
| 780 | ! wght(7) = 1. + div(ji,jj) / div(ji-1,jj-1) |
---|
| 781 | ! wght(8) = 1. + div(ji,jj) / div(ji+1,jj-1) |
---|
| 782 | ! |
---|
| 783 | ! wrk(ji,jj,nt_a) = wrk(ji,jj,nt_n) + dt*( & |
---|
| 784 | ! & + FX(ji ,jj ) * wght(1) & |
---|
| 785 | ! & - FX(ji-1,jj ) * wght(2) & |
---|
| 786 | ! & + FE(ji ,jj ) * wght(3) & |
---|
| 787 | ! & - FE(ji ,jj-1) * wght(4) & |
---|
| 788 | ! & + FL(ji ,jj ) * wght(5) & |
---|
| 789 | ! & + FR(ji-1,jj ) * wght(6) & |
---|
| 790 | ! & - FL(ji-1,jj-1) * wght(7) & |
---|
| 791 | ! & - FR(ji ,jj-1) * wght(8) & |
---|
| 792 | ! & - lambda * div(ji,jj) * ( wrk(ji,jj,nt_n) - varin(ji,jj) ) ) |
---|
| 793 | ! |
---|
| 794 | ! IF( isnan(wrk(ji,jj,nt_a)) ) THEN |
---|
| 795 | ! print*,'Nan in smoothing at iteration ',nit |
---|
| 796 | ! print*,'at grid point ',ji,jj |
---|
| 797 | ! END IF |
---|
| 798 | ! IF( abs(wrk(ji,jj,nt_a)) .gt. rbig ) THEN |
---|
| 799 | ! print*,'Inf in smoothing at iteration ',nit |
---|
| 800 | ! print*,'at grid point ',ji,jj |
---|
| 801 | ! END IF |
---|
| 802 | ! L2norm_a = L2norm_a + ( wrk(ji,jj,nt_n)-wrk(ji,jj,nt_a) )**2 |
---|
| 803 | ! END IF |
---|
| 804 | ! END DO |
---|
| 805 | ! END DO |
---|
| 806 | ! |
---|
| 807 | ! |
---|
| 808 | ! mean = Get_Mean ( jpi , jpj, wrk(:,:,nt_a), tmask ) |
---|
| 809 | ! sigma2 = Get_Vari ( jpi , jpj, wrk(:,:,nt_a), tmask, mean ) |
---|
| 810 | ! !! |
---|
| 811 | ! print*,'mean value over the ocean = ',mean + var0 |
---|
| 812 | ! print*,'variance of the input field = ',sigma2 |
---|
| 813 | ! |
---|
| 814 | ! |
---|
| 815 | ! IF( L2norm_a .gt. L2norm_n ) THEN |
---|
| 816 | ! print*,'convergence after ',nit,' iterations' |
---|
| 817 | !! EXIT |
---|
| 818 | ! END IF |
---|
| 819 | ! L2norm_n = L2norm_a |
---|
| 820 | ! L2norm_a = 0. |
---|
| 821 | ! nt_n = 1 + MOD( nit , 2 ) |
---|
| 822 | ! nt_a = 1 + MOD( nit+1, 2 ) |
---|
| 823 | ! |
---|
| 824 | ! !!>>>>>>>>>>>>>>>> |
---|
| 825 | ! END DO |
---|
| 826 | ! !!>>>>>>>>>>>>>>>> |
---|
| 827 | ! |
---|
| 828 | ! |
---|
| 829 | ! DO jj=1,jpj |
---|
| 830 | ! DO ji=1,jpi |
---|
| 831 | ! varin(ji,jj) = ( wrk(ji,jj,nt_n) + var0 )*tmask(ji,jj) |
---|
| 832 | ! END DO |
---|
| 833 | ! END DO |
---|
| 834 | ! |
---|
| 835 | ! IF( ln_diag_smoothing ) THEN |
---|
| 836 | ! status = nf90_put_var(ncid,varid2,varin) |
---|
| 837 | ! status = nf90_close(ncid) |
---|
| 838 | ! END IF |
---|
| 839 | ! ! |
---|
| 840 | ! END SUBROUTINE dtv_filter |
---|
| 841 | ! |
---|
| 842 | ! |
---|
| 843 | ! |
---|
| 844 | ! REAL(8) FUNCTION Get_Mean ( jpi , jpj, tabvar, tmask ) |
---|
| 845 | ! !!--------------------------------------------------------------------- |
---|
| 846 | ! !! *** FUNCTION Get_Mean *** |
---|
| 847 | ! !! |
---|
| 848 | ! !! ** Purpose : get the mean of the input field |
---|
| 849 | ! !! |
---|
| 850 | ! !!---------------------------------------------------------------------- |
---|
| 851 | ! INTEGER, INTENT(in) :: jpi,jpj |
---|
| 852 | ! REAL(8), INTENT(in) :: tabvar(jpi,jpj) |
---|
| 853 | ! REAL(8), INTENT(in) :: tmask (jpi,jpj) |
---|
| 854 | ! INTEGER :: ji,jj,jn |
---|
| 855 | ! |
---|
| 856 | ! !! Compute the mean first |
---|
| 857 | ! jn = 0 |
---|
| 858 | ! Get_Mean = 0. |
---|
| 859 | ! DO jj = 1, jpj |
---|
| 860 | ! DO ji = 1, jpi |
---|
| 861 | ! IF(tmask(ji,jj) .gt. 0.5) THEN |
---|
| 862 | ! Get_Mean = Get_Mean + tabvar( ji,jj ) |
---|
| 863 | ! jn=jn+1 |
---|
| 864 | ! END IF |
---|
| 865 | ! END DO |
---|
| 866 | ! END DO |
---|
| 867 | ! Get_Mean = (1./jn) * Get_Mean |
---|
| 868 | ! ! |
---|
| 869 | ! END FUNCTION Get_Mean |
---|
| 870 | ! |
---|
| 871 | ! |
---|
| 872 | ! |
---|
| 873 | ! |
---|
| 874 | ! |
---|
| 875 | ! REAL(8) FUNCTION Get_Vari ( jpi , jpj, tabvar, tmask, mean ) |
---|
| 876 | ! !!--------------------------------------------------------------------- |
---|
| 877 | ! !! *** FUNCTION Get_Mean *** |
---|
| 878 | ! !! |
---|
| 879 | ! !! ** Purpose : get the mean of the input field |
---|
| 880 | ! !! |
---|
| 881 | ! !!---------------------------------------------------------------------- |
---|
| 882 | ! INTEGER, INTENT(in) :: jpi,jpj |
---|
| 883 | ! REAL(8), INTENT(in) :: tabvar(jpi,jpj) |
---|
| 884 | ! REAL(8), INTENT(in) :: tmask (jpi,jpj), mean |
---|
| 885 | ! INTEGER :: ji,jj,jn |
---|
| 886 | ! |
---|
| 887 | ! jn = 0 |
---|
| 888 | ! Get_Vari = 0 |
---|
| 889 | ! !! |
---|
| 890 | ! DO jj = 1, jpj |
---|
| 891 | ! DO ji = 1, jpi |
---|
| 892 | ! IF(tmask(ji,jj) .gt. 0.5) THEN |
---|
| 893 | ! Get_Vari = Get_Vari + ( tabvar(ji,jj) - mean )**2 |
---|
| 894 | ! jn = jn+1 |
---|
| 895 | ! ENDIF |
---|
| 896 | ! END DO |
---|
| 897 | ! END DO |
---|
| 898 | ! Get_Vari = (1./jn) * Get_Vari |
---|
| 899 | ! ! |
---|
| 900 | ! END FUNCTION Get_Vari |
---|
| 901 | |
---|
| 902 | |
---|
| 903 | |
---|
| 904 | END MODULE module_grid |
---|