1 | ! $Id$ |
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2 | MODULE regr_pr_time_av_m |
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3 | |
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4 | USE write_field_phy |
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5 | USE mod_phys_lmdz_transfert_para, ONLY: bcast |
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6 | USE mod_phys_lmdz_para, ONLY: mpi_rank, omp_rank |
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7 | IMPLICIT NONE |
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8 | |
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9 | !------------------------------------------------------------------------------- |
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10 | ! Purpose: Regrid pressure with an averaging method. Operations done: |
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11 | ! * on the root process: read a NetCDF 3D or 4D field at a given day. |
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12 | ! * pack the fields to the LMDZ "horizontal "physics" grid and scatter |
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13 | ! to all threads of all processes; |
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14 | ! * in all the threads of all the processes, regrid the fields in pressure |
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15 | ! to the LMDZ vertical grid. |
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16 | ! * the forcing fields are stretched if the following arguments are present: |
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17 | ! - "lat_in": input file latitudes. |
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18 | ! - "pcen_in": input file cells center pressure levels. |
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19 | ! - "ptrop_ou": target grid (LMDZ) tropopause pressure. |
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20 | ! so that the tropopause is shifted to the position of the one of LMDZ. |
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21 | ! Note that the ozone quantity conservation is not ensured. |
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22 | !------------------------------------------------------------------------------- |
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23 | ! Initial routine: regr_pr_av_m module (L. Guez). |
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24 | ! Present version: David Cugnet ; corresponding additions: |
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25 | ! - time interpolation |
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26 | ! - 3D compliant |
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27 | ! - vertical stretching of the field to allow tropopause matching between |
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28 | ! input field and current lmdz field. |
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29 | !------------------------------------------------------------------------------- |
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30 | ! Remarks: |
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31 | ! * 3D fields are zonal means, with dimensions (latitude, pressure, julian day) |
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32 | ! * 4D fields have the dimensions: (longitude, latitude, pressure, julian day) |
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33 | ! * All the fields are already on the horizontal grid (rlatu) or (rlatu,rlonv), |
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34 | ! except that the latitudes are in ascending order in the input file. |
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35 | ! * We assume that all the input fields have the same coordinates. |
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36 | ! * The target vertical LMDZ grid is the grid of layer boundaries. |
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37 | ! * Regridding in pressure is conservative, second order. |
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38 | ! * All the fields are regridded as a single multi-dimensional array, so it |
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39 | ! saves CPU time to call this procedure once for several NetCDF variables |
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40 | ! rather than several times, each time for a single NetCDF variable. |
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41 | ! * The input file pressure at tropopause can be (in decreasing priority): |
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42 | ! 1) read from the file if "tropopause_air_pressure" field is available. |
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43 | ! 2) computed using "tro3" and "tro3_at_tropopause' (if available). |
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44 | ! 3) computed using "tro3" and a fixed threshold otherwise, determined using |
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45 | ! an empirical three parameters law: |
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46 | ! o3t(ppbV)=co1+co2*SIN(PI*(month-2)/6)*TANH(lat_deg/co3) |
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47 | ! => co1 and co2 are in ppbV, and co3 in degrees. |
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48 | ! => co3 allow a smooth transition between north and south hemispheres. |
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49 | ! * If available, the field "ps" (input file pressure at surface) is used. |
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50 | ! If not, the current LMDZ ground pressure is taken instead. |
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51 | ! * Fields with suffix "m"/"p" are at the closest records earlier/later than |
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52 | ! the mid-julian day "julien", on the global "dynamics" horizontal grid. |
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53 | ! * Fields(i,j,k,l) are at longitude-latitude "rlonv(i)-rlatu(j)", pressure |
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54 | ! interval "pint_in(k:k+1)]" and variable "nam(l)". |
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55 | ! * In the 2D file case, the values are the same for all longitudes. |
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56 | ! * The tropopause correction works like this: the input fields (file) are |
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57 | ! interpolated on output (LMDZ) pressure field, which is streched using a power |
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58 | ! law in a limited zone made of 3 layers: |
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59 | ! 1) between the two tropopauses (file and LMDZ) |
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60 | ! 2) in an upper and a lower transitions layers |
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61 | ! The stretching function has the following form: |
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62 | ! Sigma_str = Sigma^(1+alpha), with alpha=LOG(SigT_in/SigT_ou)/LOG(SigT_ou) |
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63 | ! This value shifts the file tropopause to the height of the one of LMDZ. |
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64 | ! The stretching is fully applied in the central zone only, and only partially |
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65 | ! in the transitions zones, thick enough to guarantee a growing stretched |
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66 | ! pressure field. The ponderation function for alpha to modulate the stretching |
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67 | ! is constant equal to 1 in the central layer, and quasi-linear (from 1 to 0) |
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68 | ! in the transition layers (from 1 to 0 ; in fact: sections of 1/log function), |
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69 | ! making this localisation function quasi-trapezoidal. |
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70 | ! |
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71 | ! * The following fields are on the global "dynamics" grid, as read from files: |
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72 | REAL, SAVE, ALLOCATABLE :: v1m(:,:,:,:) !--- Previous ozone fields |
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73 | REAL, SAVE, ALLOCATABLE :: v1p(:,:,:,:) !--- Next ozone fields |
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74 | REAL, SAVE, ALLOCATABLE :: psm(:,:), psp(:,:) !--- Surface pressure |
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75 | REAL, SAVE, ALLOCATABLE :: ptm(:,:), ptp(:,:) !--- Tropopause pressure |
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76 | REAL, SAVE, ALLOCATABLE :: otm(:,:), otp(:,:) !--- Tropopause o3 mix. ratio |
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77 | INTEGER, SAVE :: ntim_in !--- Records nb in input file |
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78 | INTEGER, SAVE :: itrp0 !--- idx above chem tropop. |
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79 | INTEGER, SAVE :: irec !--- Current time index |
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80 | ! * for daily input files: current julian day number |
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81 | ! * for monthly input files: julien is in [time_in(irec),time_in(irec+1)] |
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82 | LOGICAL, SAVE :: linterp !--- Interpolation in time |
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83 | LOGICAL, SAVE :: lPrSurf !--- Surface pressure flag |
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84 | LOGICAL, SAVE :: lPrTrop !--- Tropopause pressure flag |
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85 | LOGICAL, SAVE :: lO3Trop !--- Tropopause ozone flag |
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86 | LOGICAL, SAVE :: lfirst=.TRUE. !--- First call flag |
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87 | !$OMP THREADPRIVATE(lfirst) |
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88 | REAL, PARAMETER :: pTropUp=5.E+3 !--- Value < tropopause pressure (Pa) |
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89 | REAL, PARAMETER :: gamm = 0.4 !--- Relative thickness of transitions |
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90 | REAL, PARAMETER :: rho = 1.3 !--- Max tropopauses sigma ratio |
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91 | REAL, PARAMETER :: o3t0 = 1.E-7 !--- Nominal O3 vmr at tropopause |
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92 | LOGICAL, PARAMETER :: lo3tp=.FALSE. !--- Use parametrized O3 vmr at tropopause |
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93 | |
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94 | CONTAINS |
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95 | |
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96 | !------------------------------------------------------------------------------- |
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97 | ! |
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98 | SUBROUTINE regr_pr_time_av(fID, nam, julien, pint_in, pint_ou, v3, & |
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99 | time_in, lon_in, lat_in, pcen_in, ptrop_ou) |
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100 | ! |
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101 | !------------------------------------------------------------------------------- |
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102 | USE dimphy, ONLY: klon |
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103 | USE netcdf95, ONLY: NF95_INQ_VARID, NF95_INQUIRE_VARIABLE, handle_err, & |
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104 | NF95_INQ_DIMID, NF95_INQUIRE_DIMENSION |
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105 | USE netcdf, ONLY: NF90_INQ_VARID, NF90_GET_VAR, NF90_NOERR |
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106 | USE assert_m, ONLY: assert |
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107 | USE assert_eq_m, ONLY: assert_eq |
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108 | !! USE comvert_mod, ONLY: scaleheight |
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109 | USE interpolation, ONLY: locate |
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110 | USE regr_conserv_m, ONLY: regr_conserv |
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111 | USE regr_lint_m, ONLY: regr_lint |
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112 | USE slopes_m, ONLY: slopes |
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113 | USE mod_phys_lmdz_mpi_data, ONLY: is_mpi_root |
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114 | USE mod_grid_phy_lmdz, ONLY: nbp_lon, nbp_lat, nbp_lev |
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115 | USE mod_phys_lmdz_transfert_para, ONLY: scatter2d, scatter |
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116 | USE phys_cal_mod, ONLY: calend, year_len, days_elapsed, jH_cur |
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117 | !------------------------------------------------------------------------------- |
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118 | ! Arguments: |
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119 | INTEGER, INTENT(IN) :: fID !--- NetCDF file ID |
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120 | CHARACTER(LEN=13), INTENT(IN) :: nam(:) !--- NetCDF variables names |
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121 | REAL, INTENT(IN) :: julien !--- Days since Jan 1st |
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122 | REAL, INTENT(IN) :: pint_in(:) !--- Interfaces file Pres, Pa, ascending |
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123 | REAL, INTENT(IN) :: pint_ou(:,:) !--- Interfaces LMDZ pressure, Pa (g,nbp_lev+1) |
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124 | REAL, INTENT(OUT) :: v3(:,:,:) !--- Regridded field (klon,llm,SIZE(nam)) |
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125 | REAL, INTENT(IN), OPTIONAL :: time_in(:) !--- Records times, in days |
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126 | ! since Jan 1 of current year |
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127 | REAL, INTENT(IN), OPTIONAL :: lon_in(:) !--- Input/output longitudes vector |
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128 | REAL, INTENT(IN), OPTIONAL :: lat_in(:) !--- Input/output latitudes vector |
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129 | REAL, INTENT(IN), OPTIONAL :: pcen_in(:) !--- Mid-layers file pressure |
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130 | REAL, INTENT(IN), OPTIONAL :: ptrop_ou(:)!--- Output tropopause pres (klon) |
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131 | !------------------------------------------------------------------------------- |
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132 | ! Local variables: |
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133 | include "clesphys.h" |
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134 | include "YOMCST.h" |
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135 | CHARACTER(LEN=80) :: sub |
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136 | CHARACTER(LEN=320) :: str |
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137 | INTEGER :: vID, ncerr, n_var, ibot, ibo0, nn, itrp |
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138 | INTEGER :: i, nlev_in, n_dim, itop, ito0, i0 |
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139 | LOGICAL :: lAdjTro !--- Need to adjust tropopause |
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140 | REAL :: y_frac !--- Elapsed year fraction |
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141 | REAL :: alpha, beta, al !--- For stretching/interpolation |
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142 | REAL :: SigT_in, SigT_ou !--- Input and output tropopauses |
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143 | REAL :: Sig_bot, Sig_top !--- Fully strained layer bounds |
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144 | REAL :: Sig_bo0, Sig_to0 !--- Total strained layers bounds |
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145 | REAL :: Sig_in(SIZE(pint_in)) !--- Input field sigma levels |
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146 | REAL :: Sig_ou (nbp_lev+1) !--- Output LMDZ sigma levels |
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147 | REAL :: phi (nbp_lev+1) !--- Stretching exponent anomaly |
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148 | REAL :: pstr_ou(nbp_lev+1) !--- Stretched pressure levels |
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149 | REAL :: pintou (nbp_lev+1) !--- pint_ou in reversed order |
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150 | REAL :: v1(nbp_lon,nbp_lat,SIZE(pint_in)-1,SIZE(nam)) |
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151 | REAL :: v2(klon, SIZE(pint_in)-1,SIZE(nam)) |
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152 | ! v1: Field read/interpol at time "julien" on the global "dynamics" horiz. grid. |
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153 | ! v2: Field scattered to the partial "physics" horizontal grid. |
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154 | ! In the 2D file case, the values are the same for all longitudes. |
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155 | ! "v2(i, k, l)" is at longitude-latitude "xlon(i)-xlat(i)". |
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156 | ! Both are for pressure interval "press_in_edg(k:k+1)]" and variable "nam(l)" |
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157 | REAL, DIMENSION(nbp_lon, nbp_lat) :: ps1, pt1, ot1 |
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158 | REAL, DIMENSION(klon) :: ps2, pt2, ot2, ptropou |
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159 | LOGICAL :: ll |
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160 | !------------------------------------------------------------------------------- |
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161 | sub="regr_pr_time_av" |
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162 | nlev_in=SIZE(pint_in)-1 |
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163 | CALL assert(SIZE(v3,1)==klon, TRIM(sub)//" v3 klon") |
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164 | CALL assert(SIZE(v3,2)==nbp_lev, TRIM(sub)//" v3 nbp_lev") |
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165 | n_var = assert_eq(SIZE(nam),SIZE(v3,3),TRIM(sub)//" v3 n_var") |
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166 | CALL assert(SIZE(pint_ou,1)==klon ,TRIM(sub)//" pint_ou klon") |
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167 | CALL assert(SIZE(pint_ou,2)==nbp_lev+1,TRIM(sub)//" pint_ou nbp_lev+1") |
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168 | IF(PRESENT(lon_in)) CALL assert(SIZE(lon_in )==klon,TRIM(sub)//" lon_in klon") |
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169 | IF(PRESENT(lat_in)) CALL assert(SIZE(lat_in )==klon,TRIM(sub)//" lat_in klon") |
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170 | IF(PRESENT(ptrop_ou)) CALL assert(SIZE(ptrop_ou)==klon,TRIM(sub)//" ptrop_ou klon") |
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171 | IF(PRESENT(pcen_in)) CALL assert(SIZE(pcen_in )==nlev_in,TRIM(sub)//" pcen_in") |
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172 | lAdjTro=PRESENT(ptrop_ou) |
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173 | IF(lAdjTro.AND.(.NOT.PRESENT(lat_in).OR..NOT.PRESENT(pcen_in))) & |
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174 | CALL abort_physic(sub, 'Missing lat_in and/or pcen_in (adjust_tropopause=T)', 1) |
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175 | |
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176 | !$OMP MASTER |
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177 | IF(is_mpi_root) THEN |
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178 | |
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179 | !=== CHECK WHICH FIELDS ARE AVAILABLE IN THE INPUT FILE |
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180 | IF(lfirst) THEN |
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181 | lPrSurf=NF90_INQ_VARID(fID,"ps" ,vID)==NF90_NOERR |
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182 | lPrTrop=NF90_INQ_VARID(fID,"tropopause_air_pressure",vID)==NF90_NOERR |
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183 | lO3Trop=NF90_INQ_VARID(fID,"tro3_at_tropopause" ,vID)==NF90_NOERR |
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184 | CALL NF95_INQ_DIMID(fID,"time",vID) |
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185 | CALL NF95_INQUIRE_DIMENSION(fID,vID,nclen=ntim_in) |
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186 | linterp=PRESENT(time_in).AND.ntim_in==14 |
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187 | IF(linterp) THEN |
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188 | ALLOCATE(v1m(nbp_lon,nbp_lat,nlev_in,n_var)) |
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189 | ALLOCATE(v1p(nbp_lon,nbp_lat,nlev_in,n_var)) |
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190 | ALLOCATE(psm(nbp_lon,nbp_lat),psp(nbp_lon,nbp_lat)) |
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191 | ALLOCATE(ptm(nbp_lon,nbp_lat),ptp(nbp_lon,nbp_lat)) |
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192 | IF(lO3Trop) ALLOCATE(otm(nbp_lon,nbp_lat),otp(nbp_lon,nbp_lat)) |
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193 | END IF |
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194 | !--- INITIAL INDEX: LOCATE A LAYER WELL ABOVE TROPOPAUSE (50hPa) |
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195 | IF(lAdjTro) itrp0=locate(pcen_in,pTropUp) |
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196 | CALL msg(lPrSurf,'Using GROUND PRESSURE from input O3 forcing file.',sub) |
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197 | CALL msg(linterp,'Monthly O3 files => ONLINE TIME INTERPOLATION.',sub) |
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198 | CALL msg(lAdjTro,'o3 forcing file tropopause location uses:',sub) |
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199 | IF(lPrTrop) THEN |
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200 | CALL msg(lAdjTro,' PRESSURE AT TROPOPAUSE from file.') |
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201 | ELSE IF(lO3Trop) THEN |
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202 | CALL msg(lAdjTro,' O3 CONCENTRATION AT TROPOPAUSE from file.') |
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203 | ELSE IF(lo3tp) THEN |
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204 | CALL msg(lAdjTro,' PARAMETRIZED O3 concentration at tropopause.') |
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205 | ELSE |
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206 | CALL msg(lAdjTro,' CONSTANT O3 concentration at tropopause.') |
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207 | END IF |
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208 | END IF |
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209 | |
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210 | !=== UPDATE (ALWAYS FOR DAILY FILES, EACH MONTH FOR MONTHLY FILES) |
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211 | CALL update_fields() |
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212 | |
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213 | !=== TIME INTERPOLATION FOR MONTHLY INPUT FILES |
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214 | IF(linterp) THEN |
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215 | WRITE(str,'(3(a,f12.8))')'Interpolating O3 at julian day ',julien,' from '& |
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216 | &//'fields at times ',time_in(irec),' and ', time_in(irec+1) |
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217 | CALL msg(.TRUE.,str,sub) |
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218 | al=(time_in(irec+1)-julien)/(time_in(irec+1)-time_in(irec)) |
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219 | v1=al*v1m+(1.-al)*v1p |
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220 | IF(lPrSurf) ps1=al*psm+(1.-al)*psp |
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221 | IF(lPrTrop) pt1=al*ptm+(1.-al)*ptp |
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222 | IF(lO3Trop) ot1=al*otm+(1.-al)*otp |
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223 | END IF |
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224 | END IF |
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225 | !$OMP END MASTER |
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226 | IF(lfirst) THEN |
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227 | lfirst=.FALSE.; CALL bcast(lfirst) |
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228 | IF(lAdjTro) CALL bcast(itrp0) |
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229 | CALL bcast(lPrTrop); CALL bcast(lPrSurf) |
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230 | CALL bcast(lO3Trop); CALL bcast(linterp) |
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231 | END IF |
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232 | CALL scatter2d(v1,v2) |
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233 | !--- No "ps" in input file => assumed to be equal to current LMDZ ground press |
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234 | IF(lPrSurf) THEN; CALL scatter2d(ps1,ps2); ELSE; ps2=pint_ou(:,1); END IF |
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235 | IF(lPrTrop) CALL scatter2d(pt1,pt2) |
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236 | IF(lO3Trop) CALL scatter2d(ot1,ot2) |
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237 | |
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238 | !--- REGRID IN PRESSURE ; 3rd index inverted because "paprs" is decreasing |
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239 | IF(.NOT.lAdjTro) THEN |
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240 | DO i=1,klon |
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241 | pintou = pint_ou(i,nbp_lev+1:1:-1) |
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242 | CALL regr_conserv(1,v2(i,:,:), pint_in(:), pintou(:), & |
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243 | v3(i,nbp_lev:1:-1,:), slopes(1,v2(i,:,:), pint_in(:))) |
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244 | END DO |
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245 | ELSE |
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246 | y_frac=(REAL(days_elapsed)+jH_cur)/year_len |
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247 | |
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248 | !--- OUTPUT SIGMA LEVELS |
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249 | DO i=1,klon |
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250 | |
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251 | !--- LOCAL INPUT/OUTPUT (FILE/LMDZ) SIGMA LEVELS AT INTERFACES |
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252 | pintou=pint_ou(i,nbp_lev+1:1:-1) !--- increasing values |
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253 | Sig_in(:) = [pint_in(1:nlev_in+1)/ps2(i)] !--- increasing values |
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254 | Sig_ou(:) = [pintou (1:nbp_lev)/ps2(i),1.0] !--- increasing values |
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255 | |
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256 | !--- INPUT (FILE) AND OUTPUT (LMDZ) SIGMA LEVELS AT TROPOPAUSE |
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257 | SigT_in = get_SigTrop(i,itrp) |
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258 | SigT_ou = ptrop_ou(i)/ps2(i) |
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259 | |
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260 | !--- AVOID THE FILAMENTS WHICH WOULD NEED A VERY THICK STRETCHED REGION |
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261 | IF(SigT_ou>SigT_in*rho) SigT_ou = SigT_in*rho |
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262 | IF(SigT_ou<SigT_in/rho) SigT_ou = SigT_in/rho |
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263 | ptropou(i)=SigT_ou*ps2(i) |
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264 | |
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265 | !--- STRETCHING EXPONENT INCREMENT FOR SIMPLE POWER LAW |
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266 | alpha = LOG(SigT_in/SigT_ou)/LOG(SigT_ou) |
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267 | |
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268 | !--- FULLY STRETCHED LAYER BOUNDS (FILE AND MODEL TROPOPAUSES) |
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269 | Sig_bot = MAX(SigT_in,SigT_ou) ; ibot = locate(Sig_ou(:),Sig_bot) |
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270 | Sig_top = MIN(SigT_in,SigT_ou) ; itop = locate(Sig_ou(:),Sig_top) |
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271 | |
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272 | !--- PARTIALLY STRETCHED LAYER BOUNDS, ENSURING >0 DERIVATIVE |
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273 | beta = LOG(Sig_top)/LOG(Sig_bot) |
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274 | Sig_bo0 = Sig_bot ; IF(alpha<0.) Sig_bo0 = Sig_bot**(1/beta) |
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275 | Sig_to0 = Sig_top ; IF(alpha>0.) Sig_to0 = Sig_top ** beta |
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276 | |
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277 | !--- SOME ADDITIONAL MARGIN, PROPORTIONAL TO STRETCHED REGION THICKNESS |
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278 | !--- gamma<log(Sig_bo0/|alpha|) to keep Sig_bo0<1 |
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279 | Sig_bo0 = MIN(Sig_bo0*EXP( gamm*ABS(alpha)), 0.95+(1.-0.95)*Sig_bo0) |
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280 | Sig_to0 = Sig_to0*EXP(-gamm*ABS(alpha)) |
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281 | ibo0 = locate(Sig_ou(:),Sig_bo0) |
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282 | ito0 = locate(Sig_ou(:),Sig_to0) |
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283 | |
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284 | !--- FUNCTION FOR STRETCHING LOCALISATION |
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285 | ! 0 < Sig_to0 < Sig_top <= Sig_bo0 < Sig_bot < 1 |
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286 | phi(:)=0. |
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287 | phi(itop+1:ibot) = 1. |
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288 | phi(ito0+1:itop) = (1.-LOG(Sig_to0)/LOG(Sig_ou(ito0+1:itop)))& |
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289 | *LOG(Sig_top)/LOG(Sig_top/Sig_to0) |
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290 | phi(ibot+1:ibo0) = (1.-LOG(Sig_bo0)/LOG(Sig_ou(ibot+1:ibo0)))& |
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291 | *LOG(Sig_bot)/LOG(Sig_bot/Sig_bo0) |
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292 | |
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293 | !--- LOCAL STRAINED OUTPUT (LMDZ) PRESSURE PROFILES (INCREASING ORDER) |
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294 | pstr_ou(:) = pintou(:) * Sig_ou(:)**(alpha*phi(:)) |
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295 | |
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296 | !--- REGRID INPUT PROFILE ON STRAINED VERTICAL OUTPUT LEVELS |
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297 | CALL regr_conserv(1, v2(i,:,:), pint_in(:), pstr_ou(:), & |
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298 | v3(i,nbp_lev:1:-1,:), slopes(1,v2(i,:,:),pint_in(:))) |
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299 | |
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300 | !--- CHECK CONCENTRATIONS. strato: 50ppbV-15ppmV ; tropo: 5ppbV-300ppbV. |
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301 | i0=nbp_lev-locate(pintou(:),ptropou(i))+1 |
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302 | ll=check_ozone(v3(i, 1:i0 ,1),lon_in(i),lat_in(i),1 ,'troposphere', & |
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303 | 5.E-9,3.0E-7) |
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304 | ! IF(ll) CALL abort_physic(sub, 'Inconsistent O3 values in troposphere', 1) |
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305 | ll=check_ozone(v3(i,i0:nbp_lev,1),lon_in(i),lat_in(i),i0,'stratosphere', & |
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306 | 5.E-8,1.5E-5) |
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307 | ! IF(ll) CALL abort_physic(sub, 'Inconsistent O3 values in stratosphere', 1) |
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308 | |
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309 | END DO |
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310 | END IF |
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311 | |
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312 | CONTAINS |
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313 | |
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314 | |
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315 | !------------------------------------------------------------------------------- |
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316 | ! |
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317 | SUBROUTINE update_fields() |
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318 | ! |
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319 | !------------------------------------------------------------------------------- |
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320 | IF(.NOT.linterp) THEN !=== DAILY FILES: NO TIME INTERPOLATION |
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321 | CALL msg(.TRUE.,sub,'Updating Ozone forcing field: read from file.') |
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322 | irec=MIN(INT(julien)+1,ntim_in) !--- irec is just the julian day number |
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323 | !--- MIN -> Security in the unlikely case of roundup errors. |
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324 | CALL get_3Dfields(v1) !--- Read ozone field(s) |
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325 | IF(lAdjTro) THEN !--- Additional files for fields strain |
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326 | IF(lPrSurf) CALL get_2Dfield(ps1,"ps") |
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327 | IF(lPrTrop) CALL get_2Dfield(pt1,"tropopause_air_pressure") |
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328 | IF(lO3Trop) CALL get_2Dfield(ot1,"tro3_at_tropopause") |
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329 | END IF |
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330 | ELSE !=== MONTHLY FILES: GET 2 NEAREST RECS |
---|
331 | IF(lfirst) irec=locate(time_in,julien) !--- Need to locate surrounding times |
---|
332 | IF(.NOT.lfirst.AND.julien<time_in(irec+1)) RETURN |
---|
333 | CALL msg(.TRUE.,'Refreshing adjacent Ozone forcing fields.',sub) |
---|
334 | IF(lfirst) THEN !=== READ EARLIEST TIME FIELDS |
---|
335 | WRITE(str,'(a,i3,a,f12.8,a)')'Previous available field update (step 1): '& |
---|
336 | //'reading record ',irec,' (time ',time_in(irec),')' |
---|
337 | CALL msg(.TRUE.,str,sub) |
---|
338 | CALL get_3Dfields(v1m) !--- Read ozone field(s) |
---|
339 | IF(lAdjTro) THEN !--- Additional files for fields strain |
---|
340 | IF(lPrSurf) CALL get_2Dfield(psm,"ps") |
---|
341 | IF(lPrTrop) CALL get_2Dfield(ptm,"tropopause_air_pressure") |
---|
342 | IF(lO3Trop) CALL get_2Dfield(otm,"tro3_at_tropopause") |
---|
343 | END IF |
---|
344 | ELSE !=== SHIFT FIELDS |
---|
345 | irec=irec+1 |
---|
346 | WRITE(str,'(a,i3,a,f12.8,a)')'Previous available field update: shifting'& |
---|
347 | //' current next one (',irec,', time ',time_in(irec),')' |
---|
348 | CALL msg(.TRUE.,str,sub) |
---|
349 | v1m=v1p !--- Ozone fields |
---|
350 | IF(lAdjTro) THEN !--- Additional files for fields strain |
---|
351 | IF(lPrSurf) psm=psp !--- Surface pressure |
---|
352 | IF(lPrTrop) ptm=ptp !--- Tropopause pressure |
---|
353 | IF(lO3Trop) otm=otp !--- Tropopause ozone |
---|
354 | END IF |
---|
355 | END IF |
---|
356 | irec=irec+1 |
---|
357 | WRITE(str,'(a,i3,a,f12.8,a)')'Next available field update: reading record'& |
---|
358 | ,irec,' (time ',time_in(irec),')' |
---|
359 | CALL msg(.TRUE.,str,sub) |
---|
360 | CALL get_3Dfields(v1p) !--- Read ozone field(s) |
---|
361 | IF(lAdjTro) THEN !--- Additional files for fields strain |
---|
362 | IF(lPrSurf) CALL get_2Dfield(psp,"ps") |
---|
363 | IF(lPrTrop) CALL get_2Dfield(ptp,"tropopause_air_pressure") |
---|
364 | IF(lO3Trop) CALL get_2Dfield(otp,"tro3_at_tropopause") |
---|
365 | END IF |
---|
366 | irec=irec-1 |
---|
367 | END IF |
---|
368 | |
---|
369 | END SUBROUTINE update_fields |
---|
370 | ! |
---|
371 | !------------------------------------------------------------------------------- |
---|
372 | |
---|
373 | |
---|
374 | !------------------------------------------------------------------------------- |
---|
375 | ! |
---|
376 | SUBROUTINE get_2Dfield(v,var) |
---|
377 | ! |
---|
378 | !------------------------------------------------------------------------------- |
---|
379 | ! Purpose: Shortcut to get the "irec"th record of the surface field named "var" |
---|
380 | ! from the input file. |
---|
381 | ! Remark: In case the field is zonal, it is duplicated along first dimension. |
---|
382 | !------------------------------------------------------------------------------- |
---|
383 | ! Arguments: |
---|
384 | REAL, INTENT(INOUT) :: v(:,:) |
---|
385 | CHARACTER(LEN=*), INTENT(IN) :: var |
---|
386 | !------------------------------------------------------------------------------- |
---|
387 | CALL NF95_INQ_VARID(fID, TRIM(var), vID) |
---|
388 | CALL NF95_INQUIRE_VARIABLE(fID, vID, ndims=n_dim) |
---|
389 | IF(n_dim==2) ncerr=NF90_GET_VAR(fID,vID,v(1,:), start=[ 1,irec]) |
---|
390 | IF(n_dim==3) ncerr=NF90_GET_VAR(fID,vID,v(:,:), start=[1,1,irec]) |
---|
391 | CALL handle_err(TRIM(sub)//" NF90_GET_VAR "//TRIM(var),ncerr,fID) |
---|
392 | |
---|
393 | !--- Flip latitudes: ascending in input file, descending in "rlatu". |
---|
394 | IF(n_dim==3) THEN |
---|
395 | v(1,:) = v(1,nbp_lat:1:-1) |
---|
396 | v(2:,:)= SPREAD(v(1,:),DIM=1,ncopies=nbp_lon-1) !--- Duplication |
---|
397 | ELSE |
---|
398 | v(:,:) = v(:,nbp_lat:1:-1) |
---|
399 | END IF |
---|
400 | |
---|
401 | END SUBROUTINE get_2Dfield |
---|
402 | ! |
---|
403 | !------------------------------------------------------------------------------- |
---|
404 | |
---|
405 | |
---|
406 | !------------------------------------------------------------------------------- |
---|
407 | ! |
---|
408 | SUBROUTINE get_3Dfields(v) |
---|
409 | ! |
---|
410 | !------------------------------------------------------------------------------- |
---|
411 | ! Purpose: Shortcut to get the "irec"th record of the 3D fields named "nam" |
---|
412 | ! from the input file. Fields are stacked on fourth dimension. |
---|
413 | ! Remark: In case the field is zonal, it is duplicated along first dimension. |
---|
414 | !------------------------------------------------------------------------------- |
---|
415 | ! Arguments: |
---|
416 | REAL, INTENT(INOUT) :: v(:,:,:,:) |
---|
417 | !------------------------------------------------------------------------------- |
---|
418 | DO i=1,SIZE(nam) |
---|
419 | CALL NF95_INQ_VARID(fID, TRIM(nam(i)), vID) |
---|
420 | CALL NF95_INQUIRE_VARIABLE(fID, vID, ndims=n_dim) |
---|
421 | IF(n_dim==3) ncerr=NF90_GET_VAR(fID,vID,v(1,:,:,i), start=[ 1,1,irec]) |
---|
422 | IF(n_dim==4) ncerr=NF90_GET_VAR(fID,vID,v(:,:,:,i), start=[1,1,1,irec]) |
---|
423 | CALL handle_err(TRIM(sub)//" NF90_GET_VAR "//TRIM(nam(i)),ncerr,fID) |
---|
424 | END DO |
---|
425 | |
---|
426 | !--- Flip latitudes: ascending in input file, descending in "rlatu". |
---|
427 | IF(n_dim==3) THEN |
---|
428 | v(1,:,:,:) = v(1,nbp_lat:1:-1,:,:) |
---|
429 | v(2:,:,:,:)= SPREAD(v(1,:,:,:),DIM=1,ncopies=nbp_lon-1) !--- Duplication |
---|
430 | ELSE |
---|
431 | v(:,:,:,:) = v(:,nbp_lat:1:-1,:,:) |
---|
432 | END IF |
---|
433 | |
---|
434 | END SUBROUTINE get_3Dfields |
---|
435 | ! |
---|
436 | !------------------------------------------------------------------------------- |
---|
437 | |
---|
438 | |
---|
439 | |
---|
440 | !------------------------------------------------------------------------------- |
---|
441 | ! |
---|
442 | FUNCTION get_SigTrop(ih,it) |
---|
443 | ! |
---|
444 | !------------------------------------------------------------------------------- |
---|
445 | ! Arguments: |
---|
446 | INTEGER, INTENT(IN) :: ih |
---|
447 | INTEGER, INTENT(OUT) :: it |
---|
448 | REAL :: get_Sigtrop |
---|
449 | !------------------------------------------------------------------------------- |
---|
450 | !--- Pressure at tropopause is read in the forcing file |
---|
451 | IF(lPrTrop) THEN !--- PrTrop KNOWN FROM FILE |
---|
452 | get_SigTrop=pt2(ih)/ps2(ih); RETURN |
---|
453 | END IF |
---|
454 | !--- Chemical tropopause definition is used using a particular threshold |
---|
455 | IF(lO3Trop) THEN !--- o3trop KNOWN FROM FILE |
---|
456 | get_SigTrop=chem_tropopause(ih,it,itrp0,pint_in,v2(:,:,1),pcen_in,ot2(ih)) |
---|
457 | ELSE IF(lo3tp) THEN !--- o3trop PARAMETRIZATION |
---|
458 | get_SigTrop=chem_tropopause(ih,it,itrp0,pint_in,v2(:,:,1),pcen_in) |
---|
459 | ELSE !--- o3trop CONSTANT |
---|
460 | get_SigTrop=chem_tropopause(ih,it,itrp0,pint_in,v2(:,:,1),pcen_in,o3t0) |
---|
461 | END IF |
---|
462 | get_SigTrop=get_SigTrop/ps2(ih) |
---|
463 | |
---|
464 | END FUNCTION get_SigTrop |
---|
465 | ! |
---|
466 | !------------------------------------------------------------------------------- |
---|
467 | |
---|
468 | |
---|
469 | !------------------------------------------------------------------------------- |
---|
470 | ! |
---|
471 | FUNCTION chem_tropopause(ih,it,it0,pint,o3,pcen,o3trop) |
---|
472 | ! |
---|
473 | !------------------------------------------------------------------------------- |
---|
474 | ! Purpose: Determine the tropopause using chemical criterium, ie the pressure |
---|
475 | ! at which the ozone concentration reaches a certain level. |
---|
476 | !------------------------------------------------------------------------------- |
---|
477 | ! Remarks: |
---|
478 | ! * Input field is upside down (increasing pressure // increasing vertical idx) |
---|
479 | ! The sweep is done from top to ground, starting at the 50hPa layer (idx it0), |
---|
480 | ! where O3 is about 1,5 ppmV, until the first layer where o3<o3t is reached: |
---|
481 | ! the O3 profile in this zone is decreasing with pressure. |
---|
482 | ! * Threshold o3t can be given as an input argument ("o3trop", in ppmV) or |
---|
483 | ! determined using an empirical law roughly derived from ... & al. |
---|
484 | !------------------------------------------------------------------------------- |
---|
485 | ! Arguments: |
---|
486 | REAL :: chem_tropopause !--- Pressure at tropopause |
---|
487 | INTEGER, INTENT(IN) :: ih !--- Horizontal index |
---|
488 | INTEGER, INTENT(OUT) :: it !--- Index of tropopause layer |
---|
489 | INTEGER, INTENT(IN) :: it0 !--- Idx: higher than tropopause |
---|
490 | REAL, INTENT(IN) :: pint(:) !--- Cells-interf Pr, increasing |
---|
491 | REAL, INTENT(IN) :: o3(:,:) !--- Ozone field (pptV) |
---|
492 | REAL, OPTIONAL, INTENT(IN) :: pcen(:) !--- Cells-center Pr, increasing |
---|
493 | REAL, OPTIONAL, INTENT(IN) :: o3trop !--- Ozone at tropopause |
---|
494 | !------------------------------------------------------------------------------- |
---|
495 | ! Local variables: |
---|
496 | REAL :: o3t !--- Ozone concent. at tropopause |
---|
497 | REAL :: al !--- Interpolation coefficient |
---|
498 | REAL :: coef !--- Coeff of latitude modulation |
---|
499 | REAL, PARAMETER :: co3(3)=[91.,28.,20.] !--- Coeff for o3 at tropopause |
---|
500 | !------------------------------------------------------------------------------- |
---|
501 | !--- DETERMINE THE OZONE CONCENTRATION AT TROPOPAUSE IN THE CURRENT COLUMN |
---|
502 | IF(PRESENT(o3trop)) THEN !=== THRESHOLD FROM ARGUMENTS |
---|
503 | o3t=o3trop |
---|
504 | ELSE !=== EMPIRICAL LAW |
---|
505 | coef = TANH(lat_in(ih)/co3(3)) !--- Latitude modulation |
---|
506 | coef = SIN (2.*RPI*(y_frac-1./6.)) * coef !--- Seasonal modulation |
---|
507 | o3t = 1.E-9 * (co3(1)+co3(2)*coef) !--- Value from parametrization |
---|
508 | END IF |
---|
509 | |
---|
510 | !--- FROM 50hPa, GO DOWN UNTIL "it" IS SUCH THAT o3(ih,it)>o3t>o3(ih,it+1) |
---|
511 | it=it0; DO WHILE(o3(ih,it+1)>=o3t); it=it+1; END DO |
---|
512 | al=(o3(ih,it)-o3t)/(o3(ih,it)-o3(ih,it+1)) |
---|
513 | IF(PRESENT(pcen)) THEN |
---|
514 | chem_tropopause = pcen(it)**(1.-al) * pcen(it+1)**al |
---|
515 | ELSE |
---|
516 | chem_tropopause = SQRT( pint(it)**(1.-al) * pint(it+2)**al * pint(it+1) ) |
---|
517 | END IF |
---|
518 | it = locate(pint(:), chem_tropopause) !--- pint(it)<ptrop<pint(it+1) |
---|
519 | |
---|
520 | END FUNCTION chem_tropopause |
---|
521 | ! |
---|
522 | !------------------------------------------------------------------------------- |
---|
523 | |
---|
524 | |
---|
525 | !------------------------------------------------------------------------------- |
---|
526 | ! |
---|
527 | FUNCTION check_ozone(o3col, lon, lat, ilev0, layer, vmin, vmax) |
---|
528 | ! |
---|
529 | !------------------------------------------------------------------------------- |
---|
530 | IMPLICIT NONE |
---|
531 | !------------------------------------------------------------------------------- |
---|
532 | ! Arguments: |
---|
533 | LOGICAL :: check_ozone !--- .T. => some wrong values |
---|
534 | REAL, INTENT(IN) :: o3col(:), lon, lat |
---|
535 | INTEGER, INTENT(IN) :: ilev0 |
---|
536 | CHARACTER(LEN=*), INTENT(IN) :: layer |
---|
537 | REAL, OPTIONAL, INTENT(IN) :: vmin |
---|
538 | REAL, OPTIONAL, INTENT(IN) :: vmax |
---|
539 | !------------------------------------------------------------------------------- |
---|
540 | ! Local variables: |
---|
541 | INTEGER :: k |
---|
542 | LOGICAL :: lmin, lmax |
---|
543 | REAL :: fac |
---|
544 | CHARACTER(LEN=6) :: unt |
---|
545 | !------------------------------------------------------------------------------- |
---|
546 | !--- NOTHING TO DO |
---|
547 | lmin=.FALSE.; IF(PRESENT(vmin)) lmin=COUNT(o3col<vmin)/=0 |
---|
548 | lmax=.FALSE.; IF(PRESENT(vmax)) lmax=COUNT(o3col>vmax)/=0 |
---|
549 | check_ozone=lmin.OR.lmax; IF(.NOT.check_ozone) RETURN |
---|
550 | |
---|
551 | !--- SOME TOO LOW VALUES FOUND |
---|
552 | IF(lmin) THEN |
---|
553 | CALL unitc(vmin,unt,fac) |
---|
554 | DO k=1,SIZE(o3col); IF(o3col(k)>vmin) CYCLE |
---|
555 | WRITE(*,'(a,2f7.1,i3,a,2(f8.3,a))')'WARNING: inconsistent value in ' & |
---|
556 | //TRIM(layer)//': O3(',lon,lat,k+ilev0-1,')=',fac*o3col(k),unt//' < ', & |
---|
557 | fac*vmin,unt//' in '//TRIM(layer) |
---|
558 | END DO |
---|
559 | END IF |
---|
560 | |
---|
561 | !--- SOME TOO HIGH VALUES FOUND |
---|
562 | IF(lmax) THEN |
---|
563 | CALL unitc(vmax,unt,fac) |
---|
564 | DO k=1,SIZE(o3col); IF(o3col(k)<vmax) CYCLE |
---|
565 | WRITE(*,'(a,2f7.1,i3,a,2(f8.3,a))')'WARNING: inconsistent value in ' & |
---|
566 | //TRIM(layer)//': O3(',lon,lat,k+ilev0-1,')=',fac*o3col(k),unt//' > ', & |
---|
567 | fac*vmax,unt//' in '//TRIM(layer) |
---|
568 | END DO |
---|
569 | END IF |
---|
570 | |
---|
571 | END FUNCTION check_ozone |
---|
572 | ! |
---|
573 | !------------------------------------------------------------------------------- |
---|
574 | |
---|
575 | |
---|
576 | !------------------------------------------------------------------------------- |
---|
577 | ! |
---|
578 | SUBROUTINE unitc(val,unt,fac) |
---|
579 | ! |
---|
580 | !------------------------------------------------------------------------------- |
---|
581 | IMPLICIT NONE |
---|
582 | !------------------------------------------------------------------------------- |
---|
583 | ! Arguments: |
---|
584 | REAL, INTENT(IN) :: val |
---|
585 | CHARACTER(LEN=6), INTENT(OUT) :: unt |
---|
586 | REAL, INTENT(OUT) :: fac |
---|
587 | !------------------------------------------------------------------------------- |
---|
588 | ! Local variables: |
---|
589 | INTEGER :: ndgt |
---|
590 | !------------------------------------------------------------------------------- |
---|
591 | ndgt=3*FLOOR(LOG10(val)/3.) |
---|
592 | SELECT CASE(ndgt) |
---|
593 | CASE(-6); unt=' ppmV '; fac=1.E6 |
---|
594 | CASE(-9); unt=' ppbV '; fac=1.E9 |
---|
595 | CASE DEFAULT; unt=' vmr '; fac=1.0 |
---|
596 | END SELECT |
---|
597 | |
---|
598 | END SUBROUTINE unitc |
---|
599 | ! |
---|
600 | !------------------------------------------------------------------------------- |
---|
601 | |
---|
602 | |
---|
603 | !------------------------------------------------------------------------------- |
---|
604 | ! |
---|
605 | SUBROUTINE msg(ll,str,sub) |
---|
606 | ! |
---|
607 | !------------------------------------------------------------------------------- |
---|
608 | USE print_control_mod, ONLY: lunout |
---|
609 | IMPLICIT NONE |
---|
610 | !------------------------------------------------------------------------------- |
---|
611 | ! Arguments: |
---|
612 | LOGICAL, INTENT(IN) :: ll |
---|
613 | CHARACTER(LEN=*), INTENT(IN) :: str |
---|
614 | CHARACTER(LEN=*), OPTIONAL, INTENT(IN) :: sub |
---|
615 | !------------------------------------------------------------------------------- |
---|
616 | IF(.NOT.ll) RETURN |
---|
617 | IF(PRESENT(sub)) THEN |
---|
618 | WRITE(lunout,*)TRIM(sub)//': '//TRIM(str) |
---|
619 | ELSE |
---|
620 | WRITE(lunout,*)TRIM(str) |
---|
621 | END IF |
---|
622 | |
---|
623 | END SUBROUTINE msg |
---|
624 | ! |
---|
625 | !------------------------------------------------------------------------------- |
---|
626 | |
---|
627 | END SUBROUTINE regr_pr_time_av |
---|
628 | ! |
---|
629 | !------------------------------------------------------------------------------- |
---|
630 | |
---|
631 | END MODULE regr_pr_time_av_m |
---|