1 | subroutine soil_settings(nid,ngrid,nsoil,tsurf,tsoil,indextime) |
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2 | |
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3 | ! use netcdf |
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4 | use comsoil_h, only: layer, mlayer, inertiedat, volcapa |
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5 | use iostart, only: inquire_field_ndims, get_var, get_field, |
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6 | & inquire_field, inquire_dimension_length |
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7 | implicit none |
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8 | |
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9 | !====================================================================== |
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10 | ! Author: Ehouarn Millour (07/2006) |
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11 | ! |
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12 | ! Purpose: Read and/or initialise soil depths and properties |
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13 | ! |
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14 | ! Modifications: Aug.2010 EM : use NetCDF90 to load variables (enables using |
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15 | ! r4 or r8 restarts independently of having compiled |
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16 | ! the GCM in r4 or r8) |
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17 | ! June 2013 TN : Possibility to read files with a time axis |
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18 | ! |
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19 | ! |
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20 | ! This subroutine reads from a NetCDF file (opened by the caller) |
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21 | ! of "startfi.nc" format. |
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22 | ! The various actions and variable read/initialized are: |
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23 | ! 1. Check out the number of soil layers (in datafile); if it isn't equal |
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24 | ! to nsoil, then some interpolation will be required |
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25 | ! Also check if data in file "startfi.nc" is in older format (ie: |
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26 | ! thermal inertia was depth-independent; and there was no "depth" |
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27 | ! coordinate. |
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28 | ! Read/build layer (and midlayer) depths |
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29 | ! 2. Read volumetric specific heat (or initialise it to default value) |
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30 | ! 3. Read Thermal inertia |
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31 | ! 4. Read soil temperatures |
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32 | ! 5. Interpolate thermal inertia and temperature on the new grid, if |
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33 | ! necessary |
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34 | !====================================================================== |
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35 | |
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36 | !====================================================================== |
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37 | ! arguments |
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38 | ! --------- |
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39 | ! inputs: |
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40 | integer,intent(in) :: nid ! Input Netcdf file ID |
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41 | integer,intent(in) :: ngrid ! # of horizontal grid points |
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42 | integer,intent(in) :: nsoil ! # of soil layers |
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43 | real,intent(in) :: tsurf(ngrid) ! surface temperature |
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44 | integer,intent(in) :: indextime ! position on time axis |
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45 | ! output: |
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46 | real,intent(out) :: tsoil(ngrid,nsoil) ! soil temperature |
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47 | |
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48 | !====================================================================== |
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49 | ! local variables: |
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50 | integer ierr ! status (returned by NetCDF functions) |
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51 | integer nvarid ! ID of NetCDF variable |
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52 | integer dimid ! ID of NetCDF dimension |
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53 | integer dimlen ! length along the "depth" dimension |
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54 | integer ndims ! # of dimensions of read <inertiedat> data |
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55 | integer ig,iloop ! loop counters |
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56 | |
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57 | integer edges(3),corner(3) ! to read a specific time |
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58 | |
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59 | logical :: olddepthdef=.false. ! flag |
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60 | logical :: interpol=.false. ! flag: true if interpolation will be requiered |
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61 | |
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62 | ! to store "old" values |
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63 | real,dimension(:),allocatable :: surfinertia !surface thermal inertia |
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64 | real,dimension(:),allocatable :: oldmlayer |
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65 | real,dimension(:,:),allocatable :: oldinertiedat |
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66 | real,dimension(:,:),allocatable :: oldtsoil |
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67 | |
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68 | ! for interpolation |
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69 | real,dimension(:),allocatable :: oldgrid |
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70 | real,dimension(:),allocatable :: oldval |
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71 | real,dimension(:),allocatable :: newval |
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72 | |
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73 | real alpha,lay1 ! coefficients for building layers |
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74 | real xmin,xmax ! to display min and max of a field |
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75 | |
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76 | real,parameter :: default_volcapa=1.e6 |
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77 | |
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78 | logical :: found,ok |
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79 | |
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80 | !====================================================================== |
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81 | |
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82 | ! 1. Depth coordinate |
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83 | ! ------------------- |
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84 | |
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85 | ! 1.1 Start by reading how many layers of soil there are |
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86 | |
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87 | ! ierr=nf90_inq_dimid(nid,"subsurface_layers",dimid) |
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88 | ! if (ierr.ne.nf90_noerr) then |
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89 | ! write(*,*)'soil_settings: Problem reading <subsurface_layers>' |
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90 | ! write(*,*)trim(nf90_strerror(ierr)) |
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91 | ! call abort |
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92 | ! endif |
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93 | |
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94 | ! ierr=nf90_inquire_dimension(nid,dimid,len=dimlen) |
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95 | ! if (ierr.ne.nf90_noerr) then |
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96 | ! write(*,*)'soil_settings: Problem getting <subsurface_layers>', |
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97 | ! & 'length' |
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98 | ! write(*,*)trim(nf90_strerror(ierr)) |
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99 | ! call abort |
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100 | ! endif |
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101 | dimlen=inquire_dimension_length("subsurface_layers") |
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102 | |
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103 | if (dimlen.ne.nsoil) then |
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104 | write(*,*)'soil_settings: Interpolation of soil temperature ', |
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105 | & 'and thermal inertia will be required!' |
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106 | ! if dimlen doesn't match nsoil, then interpolation of |
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107 | ! soil temperatures and thermal inertia will be requiered |
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108 | interpol=.true. |
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109 | endif |
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110 | |
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111 | ! 1.2 Find out the # of dimensions <inertiedat> was defined as using |
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112 | ! (in ye old days, thermal inertia was only given at the "surface") |
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113 | ! Look for thermal inertia data |
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114 | ! ierr=nf90_inq_varid(nid,"inertiedat",nvarid) |
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115 | ! if (ierr.NE.nf90_noerr) then |
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116 | ! write(*,*)'soil_settings: Field <inertiedat> not found!' |
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117 | ! write(*,*)trim(nf90_strerror(ierr)) |
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118 | ! call abort |
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119 | ! endif |
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120 | ! |
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121 | ! ! Read the # of dimensions <inertidat> was defined as using |
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122 | ! ierr=nf90_inquire_variable(nid,nvarid,ndims=ndims) |
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123 | ! ! if (ndims.eq.1) then we have the "old 2D-surface" format |
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124 | ndims=inquire_field_ndims("inertiedat") |
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125 | |
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126 | ! 1.3 Read depths values or set olddepthdef flag and values |
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127 | if (ndims.eq.1) then ! we know that there is none |
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128 | write(*,*)'soil_settings: no <soildepth> field expected' |
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129 | write(*,*)'building one mimicking old definitions' |
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130 | olddepthdef=.true. |
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131 | interpol=.true. |
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132 | ! allocate oldmlayer |
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133 | if (.not.allocated(oldmlayer)) then |
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134 | allocate(oldmlayer(dimlen),stat=ierr) |
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135 | if (ierr.ne.0) then |
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136 | write(*,*) 'soil_settings: failed allocation of oldmlayer!' |
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137 | call abort_physic("soil_settings", |
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138 | & "failed oldmlayer allocation",1) |
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139 | endif |
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140 | endif |
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141 | do iloop=1,dimlen |
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142 | oldmlayer(iloop)=sqrt(887.75/3.14)*((2.**(iloop-0.5))-1.) |
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143 | enddo |
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144 | else ! Look for depth |
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145 | ! ierr=nf90_inq_varid(nid,"soildepth",nvarid) |
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146 | ! if (ierr.ne.nf90_noerr) then |
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147 | ! write(*,*)'soil_settings: Field <soildepth> not found!' |
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148 | ! write(*,*)trim(nf90_strerror(ierr)) |
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149 | ! call abort |
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150 | ! endif |
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151 | ! read <depth> coordinate |
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152 | if (interpol) then !put values in oldmlayer |
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153 | ! ierr=nf90_get_var(nid,nvarid,oldmlayer) |
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154 | ! if (ierr.ne.nf90_noerr) then |
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155 | ! write(*,*)'soil_settings: Problem while reading <soildepth>' |
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156 | ! write(*,*)trim(nf90_strerror(ierr)) |
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157 | ! call abort |
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158 | ! endif |
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159 | call get_var("soildepth",oldmlayer,found) |
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160 | if (.not.found) then |
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161 | write(*,*)'soil_settings: Problem while reading <soildepth>' |
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162 | endif |
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163 | else ! put values in mlayer |
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164 | ! ierr=nf90_get_var(nid,nvarid,mlayer) |
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165 | ! if (ierr.ne.nf90_noerr) then |
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166 | ! write(*,*)'soil_settings: Problem while reading <soildepth>' |
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167 | ! write(*,*)trim(nf90_strerror(ierr)) |
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168 | ! call abort |
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169 | ! endif |
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170 | call get_var("soildepth",mlayer,found) |
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171 | if (.not.found) then |
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172 | write(*,*)'soil_settings: Problem while reading <soildepth>' |
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173 | endif |
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174 | endif !of if (interpol) |
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175 | endif !of if (ndims.eq.1) |
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176 | |
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177 | ! 1.4 Build mlayer(), if necessary |
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178 | if (interpol) then |
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179 | ! default mlayer distribution, following a power law: |
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180 | ! mlayer(k)=lay1*alpha**(k-1/2) |
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181 | lay1=2.e-4 |
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182 | alpha=2 |
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183 | do iloop=0,nsoil-1 |
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184 | mlayer(iloop)=lay1*(alpha**(iloop-0.5)) |
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185 | enddo |
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186 | endif |
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187 | |
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188 | ! 1.5 Build layer(); following the same law as mlayer() |
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189 | ! Assuming layer distribution follows mid-layer law: |
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190 | ! layer(k)=lay1*alpha**(k-1) |
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191 | lay1=sqrt(mlayer(0)*mlayer(1)) |
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192 | alpha=mlayer(1)/mlayer(0) |
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193 | do iloop=1,nsoil |
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194 | layer(iloop)=lay1*(alpha**(iloop-1)) |
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195 | enddo |
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196 | |
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197 | ! 2. Volumetric heat capacity (note: it is declared in comsoil_h) |
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198 | ! --------------------------- |
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199 | ! "volcapa" is (so far) 0D and written in "controle" table of startfi file |
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200 | ! volcapa is read or set when "controle" is read (see tabfi.F) |
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201 | ! Just in case, we check here that it is not zero. If it is, we |
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202 | ! set it to "default_volcapa" |
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203 | |
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204 | if (volcapa.le.0.0) then |
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205 | write(*,*)'soil_settings: Warning, volcapa = ',volcapa |
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206 | write(*,*)' That doesn t seem right' |
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207 | write(*,*)' Initializing Volumetric heat capacity to ', |
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208 | & default_volcapa |
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209 | volcapa=default_volcapa |
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210 | endif |
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211 | ! Look for it |
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212 | ! ierr=NF_INQ_VARID(nid,"volcapa",nvarid) |
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213 | ! if (ierr.NE.nf90_noerr) then |
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214 | ! write(*,*)'soil_settings: Field <volcapa> not found!' |
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215 | ! write(*,*)'Initializing Volumetric heat capacity to ', |
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216 | ! & default_volcapa |
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217 | ! volcapa=default_volcapa |
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218 | ! else |
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219 | !#ifdef NC_DOUBLE |
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220 | ! ierr = NF_GET_VAR_DOUBLE(nid,nvarid,volcapa) |
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221 | !#else |
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222 | ! ierr = NF_GET_VAR_REAL(nid,nvarid,volcapa) |
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223 | !#endif |
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224 | ! if (ierr.ne.nf90_noerr) then |
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225 | ! write(*,*)'soil_settings: Problem while reading <volcapa>' |
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226 | ! call abort |
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227 | ! endif |
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228 | ! endif |
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229 | |
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230 | ! 3. Thermal inertia (note: it is declared in comsoil_h) |
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231 | ! ------------------ |
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232 | |
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233 | ! 3.1 Look (again) for thermal inertia data (to reset nvarid) |
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234 | ! ierr=nf90_inq_varid(nid,"inertiedat",nvarid) |
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235 | ! if (ierr.NE.nf90_noerr) then |
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236 | ! write(*,*)'soil_settings: Field <inertiedat> not found!' |
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237 | ! write(*,*)trim(nf90_strerror(ierr)) |
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238 | ! call abort |
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239 | ! endif |
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240 | |
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241 | ! 3.2 Knowing the # of dimensions <inertidat> was defined as using, |
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242 | ! read/build thermal inertia |
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243 | |
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244 | if (ndims.eq.1) then ! "old 2D-surface" format |
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245 | write(*,*)'soil_settings: Thermal inertia is only given as surfac |
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246 | &e data!' |
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247 | ! Read Surface thermal inertia |
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248 | allocate(surfinertia(ngrid)) |
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249 | ! ierr=nf90_get_var(nid,nvarid,surfinertia) |
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250 | ! if (ierr.NE.nf90_noerr) then |
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251 | ! write(*,*)'soil_settings: Problem while reading <inertiedat>' |
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252 | ! write(*,*)trim(nf90_strerror(ierr)) |
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253 | ! call abort |
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254 | ! endif |
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255 | call get_field("inertiedat",surfinertia,found) |
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256 | if (.not.found) then |
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257 | write(*,*) "soil_settings: Failed loading <inertiedat>" |
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258 | call abort_physic("soil_settings", |
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259 | & "failed loading <inertiedat>",1) |
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260 | endif |
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261 | |
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262 | write(*,*)' => Building soil thermal inertia (using reference sur |
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263 | &face thermal inertia)' |
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264 | do iloop=1,nsoil |
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265 | inertiedat(:,iloop)=surfinertia(:) |
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266 | enddo |
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267 | deallocate(surfinertia) |
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268 | |
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269 | else ! "3D surface+depth" format |
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270 | if (interpol) then ! put values in oldinertiedat |
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271 | if (.not.allocated(oldinertiedat)) then |
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272 | allocate(oldinertiedat(ngrid,dimlen),stat=ierr) |
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273 | if (ierr.ne.0) then |
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274 | write(*,*) 'soil_settings: failed allocation of ', |
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275 | & 'oldinertiedat!' |
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276 | call abort_physic("soil_settings", |
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277 | & "failed allocation of oldinertiedat",1) |
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278 | endif |
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279 | endif ! of if (.not.allocated(oldinertiedat)) |
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280 | ! ierr=nf90_get_var(nid,nvarid,oldinertiedat) |
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281 | ! if (ierr.NE.nf90_noerr) then |
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282 | ! write(*,*)'soil_settings: Problem while reading <inertiedat>' |
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283 | ! write(*,*)trim(nf90_strerror(ierr)) |
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284 | ! call abort |
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285 | ! endif |
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286 | call get_field("inertiedat",oldinertiedat,found) |
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287 | if (.not.found) then |
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288 | write(*,*) "soil_settings: Failed loading <inertiedat>" |
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289 | call abort_physic("soil_settings", |
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290 | & "failed loading <inertiedat>",1) |
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291 | endif |
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292 | else ! put values in therm_i |
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293 | ! ierr=nf90_get_var(nid,nvarid,inertiedat) |
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294 | ! if (ierr.NE.nf90_noerr) then |
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295 | ! write(*,*)'soil_settings: Problem while reading <inertiedat>' |
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296 | ! write(*,*)trim(nf90_strerror(ierr)) |
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297 | ! call abort |
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298 | call get_field("inertiedat",inertiedat,found) |
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299 | if (.not.found) then |
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300 | write(*,*) "soil_settings: Failed loading <inertiedat>" |
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301 | call abort_physic("soil_settings", |
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302 | & "failed loading <inertiedat>",1) |
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303 | endif |
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304 | ! endif |
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305 | endif ! of if (interpol) |
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306 | endif ! of if (ndims.eq.1) |
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307 | |
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308 | ! 4. Read soil temperatures |
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309 | ! ------------------------- |
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310 | |
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311 | ! ierr=nf90_inq_varid(nid,"tsoil",nvarid) |
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312 | ok=inquire_field("tsoil") |
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313 | ! if (ierr.ne.nf90_noerr) then |
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314 | if (.not.ok) then |
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315 | write(*,*)'soil_settings: Field <tsoil> not found!' |
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316 | write(*,*)' => Building <tsoil> from surface values <tsurf>' |
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317 | do iloop=1,nsoil |
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318 | tsoil(:,iloop)=tsurf(:) |
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319 | enddo |
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320 | else ! <tsoil> found |
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321 | if (interpol) then ! put values in oldtsoil |
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322 | if (.not.allocated(oldtsoil)) then |
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323 | allocate(oldtsoil(ngrid,dimlen),stat=ierr) |
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324 | if (ierr.ne.0) then |
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325 | write(*,*) 'soil_settings: failed allocation of ', |
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326 | & 'oldtsoil!' |
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327 | call abort_physic("soil_settings", |
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328 | & "failed allocation of oldtsoil",1) |
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329 | endif |
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330 | endif |
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331 | ! ierr=nf90_get_var(nid,nvarid,oldtsoil) |
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332 | ! if (ierr.ne.nf90_noerr) then |
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333 | ! write(*,*)'soil_settings: Problem while reading <tsoil>' |
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334 | ! write(*,*)trim(nf90_strerror(ierr)) |
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335 | ! call abort |
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336 | ! endif |
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337 | call get_field("tsoil",oldtsoil,found) |
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338 | if (.not.found) then |
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339 | write(*,*) "soil_settings: Failed loading <tsoil>" |
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340 | call abort_physic("soil_settings", |
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341 | & "failed loading <tsoil>",1) |
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342 | endif |
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343 | else ! put values in tsoil |
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344 | ! corner(1)=1 |
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345 | ! corner(2)=1 |
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346 | ! corner(3)=indextime |
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347 | ! edges(1)=ngrid |
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348 | ! edges(2)=nsoil |
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349 | ! edges(3)=1 |
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350 | ! !ierr=nf90_get_var(nid,nvarid,tsoil,corner,edges) |
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351 | ! ierr=nf90_get_var(nid,nvarid,tsoil) |
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352 | ! if (ierr.ne.nf90_noerr) then |
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353 | ! write(*,*)'soil_settings: Problem while reading <tsoil>' |
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354 | ! write(*,*)trim(nf90_strerror(ierr)) |
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355 | ! call abort |
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356 | ! endif |
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357 | call get_field("tsoil",tsoil,found,timeindex=indextime) |
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358 | if (.not.found) then |
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359 | write(*,*) "soil_settings: Failed loading <tsoil>" |
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360 | call abort_physic("soil_settings", |
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361 | & "failed loading <tsoil>",1) |
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362 | endif |
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363 | endif ! of if (interpol) |
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364 | endif! of if (.not.ok) |
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365 | |
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366 | ! 5. If necessary, interpolate soil temperatures and thermal inertias |
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367 | ! ------------------------------------------------------------------- |
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368 | |
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369 | if (olddepthdef) then |
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370 | ! tsoil needs to be interpolated, but not therm_i |
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371 | allocate(oldgrid(dimlen+1)) |
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372 | allocate(oldval(dimlen+1)) |
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373 | allocate(newval(nsoil)) |
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374 | |
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375 | do ig=1,ngrid |
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376 | ! copy values |
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377 | oldval(1)=tsurf(ig) |
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378 | oldval(2:dimlen+1)=oldtsoil(ig,1:dimlen) |
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379 | ! build vertical coordinate |
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380 | oldgrid(1)=0. ! ground |
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381 | oldgrid(2:dimlen+1)=oldmlayer(1:dimlen)* |
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382 | & (inertiedat(ig,1)/volcapa) |
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383 | ! interpolate |
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384 | call interp_line(oldgrid,oldval,dimlen+1,mlayer,newval,nsoil) |
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385 | ! copy result in tsoil |
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386 | tsoil(ig,:)=newval(:) |
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387 | enddo |
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388 | |
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389 | ! cleanup |
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390 | deallocate(oldgrid) |
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391 | deallocate(oldval) |
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392 | deallocate(newval) |
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393 | interpol=.false. ! no need for interpolation any more |
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394 | endif !of if (olddepthdef) |
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395 | |
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396 | if (interpol) then |
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397 | write(*,*)'soil_settings: Vertical interpolation along new grid' |
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398 | ! interpolate soil temperatures and thermal inertias |
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399 | if (.not.allocated(oldgrid)) then |
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400 | allocate(oldgrid(dimlen+1)) |
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401 | allocate(oldval(dimlen+1)) |
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402 | allocate(newval(nsoil)) |
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403 | endif |
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404 | |
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405 | ! thermal inertia |
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406 | do ig=1,ngrid |
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407 | ! copy data |
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408 | oldval(1:dimlen)=oldinertiedat(ig,dimlen) |
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409 | ! interpolate |
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410 | call interp_line(oldmlayer,oldval,dimlen,mlayer,newval,nsoil) |
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411 | !copy result in inertiedat |
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412 | inertiedat(ig,:)=newval(:) |
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413 | enddo |
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414 | |
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415 | ! soil temperature |
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416 | ! vertical coordinate |
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417 | oldgrid(1)=0.0 |
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418 | oldgrid(2:dimlen+1)=oldmlayer(1:dimlen) |
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419 | do ig=1,ngrid |
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420 | ! data |
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421 | oldval(1)=tsurf(ig) |
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422 | oldval(2:dimlen+1)=oldtsoil(ig,1:dimlen) |
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423 | ! interpolate |
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424 | call interp_line(oldgrid,oldval,dimlen+1,mlayer,newval,nsoil) |
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425 | ! copy result in inertiedat |
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426 | tsoil(ig,:)=newval(:) |
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427 | enddo |
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428 | |
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429 | !cleanup |
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430 | deallocate(oldgrid) |
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431 | deallocate(oldval) |
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432 | deallocate(newval) |
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433 | deallocate(oldinertiedat) |
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434 | deallocate(oldtsoil) |
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435 | endif ! of if (interpol) |
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436 | |
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437 | ! 6. Report min and max values of soil temperatures and thermal inertias |
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438 | ! ---------------------------------------------------------------------- |
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439 | |
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440 | write(*,*) |
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441 | write(*,*)'Soil volumetric heat capacity:',volcapa |
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442 | |
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443 | xmin = MINVAL(inertiedat) |
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444 | xmax = MAXVAL(inertiedat) |
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445 | write(*,*)'Soil thermal inertia <inertiedat>:',xmin,xmax |
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446 | |
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447 | xmin = 1.0E+20 |
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448 | xmax = -1.0E+20 |
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449 | xmin = MINVAL(tsoil) |
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450 | xmax = MAXVAL(tsoil) |
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451 | write(*,*)'Soil temperature <tsoil>:',xmin,xmax |
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452 | |
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453 | end |
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