| [135] | 1 | subroutine aeroptproperties(ngrid,nlayer,reffrad,nueffrad, & |
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| 2 | QVISsQREF3d,omegaVIS3d,gVIS3d, & |
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| 3 | QIRsQREF3d,omegaIR3d,gIR3d, & |
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| 4 | QREFvis3d,QREFir3d) |
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| 5 | |
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| 6 | use radinc_h, only: L_NSPECTI,L_NSPECTV,naerkind,nsizemax |
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| 7 | use radcommon_h, only: QVISsQREF,omegavis,gvis,QIRsQREF,omegair,gir |
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| 8 | use radcommon_h, only: radiustab,nsize,qrefvis,qrefir |
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| 9 | |
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| 10 | implicit none |
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| 11 | |
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| 12 | !================================================================== |
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| 13 | ! |
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| 14 | ! Purpose |
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| 15 | ! ------- |
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| 16 | ! Compute the scattering parameters in each grid |
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| 17 | ! box, depending on aerosol grain sizes. |
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| 18 | ! |
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| 19 | ! Notes |
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| 20 | ! ----- |
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| 21 | ! Don't forget to set the value of varyingnueff below; If |
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| 22 | ! the effective variance of the distribution for the given |
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| 23 | ! aerosol is considered homogeneous in the atmosphere, please |
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| 24 | ! set varyingnueff(iaer) to .false. Resulting computational |
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| 25 | ! time will be much better. |
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| 26 | ! |
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| 27 | ! Authors |
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| 28 | ! ------- |
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| 29 | ! J.-B. Madeleine, F. Montmessin |
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| 30 | ! Slightly modified and converted to F90 by R. Wordsworth (2009) |
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| 31 | ! Varying nueff section removed by R. Wordsworth for simplicity |
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| 32 | ! |
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| 33 | !================================================================== |
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| 34 | |
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| 35 | #include "dimensions.h" |
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| 36 | #include "dimphys.h" |
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| 37 | #include "callkeys.h" |
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| 38 | |
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| 39 | ! Local variables |
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| 40 | ! --------------- |
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| 41 | |
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| 42 | ! ============================================================= |
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| 43 | LOGICAL, PARAMETER :: varyingnueff(naerkind) = .false. |
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| 44 | ! ============================================================= |
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| 45 | |
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| 46 | ! Radius axis used for integration |
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| 47 | DOUBLE PRECISION :: radiusint(nsizemax+1) |
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| 48 | ! Min. and max radii of the interpolation grid (in METERS) |
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| 49 | REAL, PARAMETER :: refftabmin = 2e-8 |
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| 50 | ! REAL, PARAMETER :: refftabmax = 35e-6 |
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| 51 | REAL, PARAMETER :: refftabmax = 1e-3 ! CHANGED BY RDW |
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| 52 | ! Log of the min and max variance of the interpolation grid |
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| 53 | REAL, PARAMETER :: nuefftabmin = -4.6 |
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| 54 | REAL, PARAMETER :: nuefftabmax = 0. |
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| 55 | ! Number of effective radii of the interpolation grid |
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| 56 | INTEGER, PARAMETER :: refftabsize = 200 |
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| 57 | ! Number of effective variances of the interpolation grid |
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| 58 | ! INTEGER, PARAMETER :: nuefftabsize = 100 |
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| 59 | INTEGER, PARAMETER :: nuefftabsize = 1 ! CHANGED BY RDW |
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| 60 | ! Interpolation grid indices (reff,nueff) |
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| 61 | INTEGER :: grid_i,grid_j |
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| 62 | ! Volume ratio of the look-up table (different in VIS and IR) |
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| 63 | DOUBLE PRECISION :: vrat |
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| 64 | ! r_g and sigma_g for the log-normal distribution |
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| 65 | ! as defined by [hansen_1974] |
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| 66 | REAL :: r_g,sigma_g |
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| 67 | ! Error function used for integration |
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| 68 | DOUBLE PRECISION :: derf |
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| 69 | ! Density function f(x)dx of the log-normal distribution |
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| 70 | REAL :: dfi |
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| 71 | DOUBLE PRECISION :: dfi_tmp(nsizemax+1) |
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| 72 | ! Intermediate variable |
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| 73 | REAL :: var_tmp,var3d_tmp(ngridmx,nlayermx) |
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| 74 | ! Bilinear interpolation factors |
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| 75 | REAL :: kx,ky,k1,k2,k3,k4 |
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| 76 | ! Indices |
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| 77 | INTEGER :: i,j,k,l,m,iaer,idomain |
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| 78 | INTEGER :: ig,lg,chg |
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| 79 | |
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| 80 | ! Local saved variables |
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| 81 | ! --------------------- |
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| 82 | |
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| 83 | ! Radius axis of the interpolation grid |
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| 84 | DOUBLE PRECISION,SAVE :: refftab(refftabsize) |
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| 85 | ! Variance axis of the interpolation grid |
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| 86 | DOUBLE PRECISION,SAVE :: nuefftab(nuefftabsize) |
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| 87 | ! Volume ratio of the grid |
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| 88 | DOUBLE PRECISION,SAVE :: logvratgrid,vratgrid |
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| 89 | ! Grid used to remember which calculation is done |
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| 90 | LOGICAL,SAVE :: checkgrid(refftabsize,nuefftabsize,naerkind,2) & |
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| 91 | = .false. |
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| 92 | ! Optical properties of the grid (VISIBLE) |
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| 93 | REAL,SAVE :: epVISgrid(refftabsize,nuefftabsize,L_NSPECTV,naerkind) |
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| 94 | REAL,SAVE :: omegVISgrid(refftabsize,nuefftabsize,L_NSPECTV,naerkind) |
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| 95 | REAL,SAVE :: gVISgrid(refftabsize,nuefftabsize,L_NSPECTV,naerkind) |
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| 96 | ! Optical properties of the grid (INFRARED) |
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| 97 | REAL,SAVE :: epIRgrid(refftabsize,nuefftabsize,L_NSPECTI,naerkind) |
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| 98 | REAL,SAVE :: omegIRgrid(refftabsize,nuefftabsize,L_NSPECTI,naerkind) |
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| 99 | REAL,SAVE :: gIRgrid(refftabsize,nuefftabsize,L_NSPECTI,naerkind) |
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| 100 | ! Optical properties of the grid (REFERENCE WAVELENGTHS) |
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| 101 | REAL,SAVE :: eprefVISgrid(refftabsize,nuefftabsize,naerkind) |
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| 102 | REAL,SAVE :: eprefIRgrid(refftabsize,nuefftabsize,naerkind) |
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| 103 | ! Firstcall |
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| 104 | LOGICAL,SAVE :: firstcall = .true. |
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| 105 | |
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| 106 | ! Inputs |
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| 107 | ! ------ |
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| 108 | |
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| 109 | INTEGER :: ngrid,nlayer |
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| 110 | ! Aerosol effective radius used for radiative transfer (meter) |
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| 111 | REAL :: reffrad(ngridmx,nlayermx,naerkind) |
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| 112 | ! Aerosol effective variance used for radiative transfer (n.u.) |
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| 113 | REAL :: nueffrad(ngridmx,nlayermx,naerkind) |
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| 114 | |
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| 115 | ! Outputs |
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| 116 | ! ------- |
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| 117 | |
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| 118 | REAL :: QVISsQREF3d(ngridmx,nlayermx,L_NSPECTV,naerkind) |
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| 119 | REAL :: omegaVIS3d(ngridmx,nlayermx,L_NSPECTV,naerkind) |
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| 120 | REAL :: gVIS3d(ngridmx,nlayermx,L_NSPECTV,naerkind) |
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| 121 | |
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| 122 | REAL :: QIRsQREF3d(ngridmx,nlayermx,L_NSPECTI,naerkind) |
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| 123 | REAL :: omegaIR3d(ngridmx,nlayermx,L_NSPECTI,naerkind) |
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| 124 | REAL :: gIR3d(ngridmx,nlayermx,L_NSPECTI,naerkind) |
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| 125 | |
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| 126 | REAL :: QREFvis3d(ngridmx,nlayermx,naerkind) |
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| 127 | REAL :: QREFir3d(ngridmx,nlayermx,naerkind) |
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| 128 | |
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| 129 | DO iaer = 1, naerkind ! Loop on aerosol kind |
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| 130 | |
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| 131 | IF ( (nsize(iaer,1).EQ.1).AND.(nsize(iaer,2).EQ.1) ) THEN |
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| 132 | |
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| 133 | !================================================================== |
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| 134 | ! If there is one single particle size, optical |
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| 135 | ! properties of the considered aerosol are homogeneous |
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| 136 | DO lg = 1, nlayer |
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| 137 | DO ig = 1, ngrid |
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| 138 | DO chg = 1, L_NSPECTV |
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| 139 | QVISsQREF3d(ig,lg,chg,iaer)=QVISsQREF(chg,iaer,1) |
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| 140 | omegaVIS3d(ig,lg,chg,iaer)=omegaVIS(chg,iaer,1) |
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| 141 | gVIS3d(ig,lg,chg,iaer)=gVIS(chg,iaer,1) |
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| 142 | ENDDO |
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| 143 | DO chg = 1, L_NSPECTI |
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| 144 | QIRsQREF3d(ig,lg,chg,iaer)=QIRsQREF(chg,iaer,1) |
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| 145 | omegaIR3d(ig,lg,chg,iaer)=omegaIR(chg,iaer,1) |
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| 146 | gIR3d(ig,lg,chg,iaer)=gIR(chg,iaer,1) |
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| 147 | ENDDO |
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| 148 | QREFvis3d(ig,lg,iaer)=QREFvis(iaer,1) |
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| 149 | QREFir3d(ig,lg,iaer)=QREFir(iaer,1) |
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| 150 | ENDDO |
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| 151 | ENDDO |
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| 152 | |
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| 153 | if (firstcall) then |
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| 154 | print*,'Optical properties of the aerosol are homogenous for:' |
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| 155 | print*,'iaer = ',iaer |
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| 156 | endif |
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| 157 | |
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| 158 | ELSE ! Varying effective radius and variance |
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| 159 | DO idomain = 1, 2 ! Loop on visible or infrared channel |
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| 160 | !================================================================== |
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| 161 | ! 1. Creating the effective radius and variance grid |
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| 162 | ! -------------------------------------------------- |
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| 163 | IF (firstcall) THEN |
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| 164 | ! 1.1 Effective radius |
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| 165 | refftab(1) = refftabmin |
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| 166 | refftab(refftabsize) = refftabmax |
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| 167 | |
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| 168 | logvratgrid = log(refftabmax/refftabmin) / & |
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| 169 | float(refftabsize-1)*3. |
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| 170 | vratgrid = exp(logvratgrid) |
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| 171 | |
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| 172 | do i = 2, refftabsize-1 |
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| 173 | refftab(i) = refftab(i-1)*vratgrid**(1./3.) |
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| 174 | enddo |
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| 175 | |
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| 176 | ! 1.2 Effective variance |
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| 177 | do i = 0, nuefftabsize-1 |
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| 178 | nuefftab(i+1) = exp( nuefftabmin + & |
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| 179 | i*(nuefftabmax-nuefftabmin)/(nuefftabsize-1) ) |
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| 180 | enddo |
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| 181 | firstcall = .false. |
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| 182 | ENDIF |
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| 183 | |
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| 184 | |
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| 185 | |
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| 186 | ! 2. Compute the scattering parameters using linear |
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| 187 | ! interpolation over grain sizes and constant nueff |
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| 188 | ! --------------------------------------------------- |
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| 189 | |
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| 190 | ! 2.1 Initialization |
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| 191 | |
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| 192 | vrat = log(radiustab(iaer,idomain,nsize(iaer,idomain)) / & |
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| 193 | radiustab(iaer,idomain,1)) / & |
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| 194 | float(nsize(iaer,idomain)-1)*3. |
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| 195 | vrat = exp(vrat) |
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| 196 | |
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| 197 | radiusint(1) = 1.e-9 |
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| 198 | DO i = 2,nsize(iaer,idomain) |
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| 199 | radiusint(i) = ( (2.*vrat) / (vrat+1.) )**(1./3.) * & |
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| 200 | radiustab(iaer,idomain,i-1) |
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| 201 | ENDDO |
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| 202 | radiusint(nsize(iaer,idomain)+1) = 1.e-2 |
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| 203 | |
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| 204 | DO lg = 1,nlayer |
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| 205 | DO ig = 1,ngrid |
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| 206 | ! 2.1 Effective radius index and kx calculation |
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| 207 | var_tmp=reffrad(ig,lg,iaer)/refftabmin |
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| 208 | var_tmp=log(var_tmp)*3. |
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| 209 | var_tmp=var_tmp/logvratgrid+1. |
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| 210 | grid_i=floor(var_tmp) |
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| 211 | IF (grid_i.GE.refftabsize) THEN |
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| 212 | WRITE(*,*) 'Warning: Aerosol particle size in grid box #' |
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| 213 | WRITE(*,*) ig,' is too large to be used by the ' |
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| 214 | WRITE(*,*) 'radiative transfer; please extend the ' |
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| 215 | WRITE(*,*) 'interpolation grid to larger sizes.' |
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| 216 | |
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| 217 | grid_i=refftabsize-1 |
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| 218 | kx = 1. |
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| 219 | ELSEIF (grid_i.LT.1) THEN |
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| 220 | WRITE(*,*) 'Warning: Aerosol particle size in grid box #' |
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| 221 | WRITE(*,*) ig,' is too small to be used by the ' |
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| 222 | WRITE(*,*) 'radiative transfer; please extend the ' |
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| 223 | WRITE(*,*) 'interpolation grid to smaller sizes.' |
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| 224 | grid_i=1 |
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| 225 | kx = 0. |
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| 226 | ELSE |
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| 227 | kx = ( reffrad(ig,lg,iaer)-refftab(grid_i) ) / & |
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| 228 | ( refftab(grid_i+1)-refftab(grid_i) ) |
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| 229 | ENDIF |
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| 230 | ! 2.3 Integration |
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| 231 | DO j=grid_i,grid_i+1 |
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| 232 | ! 2.3.1 Check if the calculation has been completed |
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| 233 | IF (.NOT.checkgrid(j,1,iaer,idomain)) THEN |
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| 234 | ! 2.3.2 Compute r_g and sigma_g for the log-normal |
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| 235 | ! distribution as defined by [hansen_1974], "Light |
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| 236 | ! scattering in planetary atmospheres", Space |
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| 237 | ! Science Reviews 16 527-610, p558 |
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| 238 | sigma_g = log(1.+nueffrad(1,1,iaer)) |
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| 239 | r_g = exp(2.5*sigma_g) |
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| 240 | sigma_g = sqrt(sigma_g) |
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| 241 | r_g = refftab(j) / r_g |
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| 242 | IF (idomain.EQ.1) THEN ! VISIBLE DOMAIN ----------- |
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| 243 | ! 2.3.3.vis Initialization |
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| 244 | epVISgrid(j,1,:,iaer)=0. |
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| 245 | omegVISgrid(j,1,:,iaer)=0. |
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| 246 | gVISgrid(j,1,:,iaer)=0. |
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| 247 | eprefVISgrid(j,1,iaer)=0. |
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| 248 | ! 2.3.4.vis Log-normal distribution |
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| 249 | DO l=1,nsize(iaer,idomain)+1 |
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| 250 | dfi_tmp(l) = log(radiusint(l)/r_g) / & |
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| 251 | sqrt(2.)/sigma_g |
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| 252 | ENDDO |
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| 253 | DO l=1,nsize(iaer,idomain) |
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| 254 | dfi = 0.5*( derf(dfi_tmp(l+1)) - & |
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| 255 | derf(dfi_tmp(l)) ) |
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| 256 | DO m=1,L_NSPECTV |
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| 257 | epVISgrid(j,1,m,iaer) = & |
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| 258 | epVISgrid(j,1,m,iaer) & |
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| 259 | + QVISsQREF(m,iaer,l)*dfi |
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| 260 | omegVISgrid(j,1,m,iaer) = & |
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| 261 | omegVISgrid(j,1,m,iaer) & |
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| 262 | + omegaVIS(m,iaer,l)*dfi |
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| 263 | gVISgrid(j,1,m,iaer) = & |
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| 264 | gVISgrid(j,1,m,iaer) & |
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| 265 | + gVIS(m,iaer,l)*dfi |
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| 266 | ENDDO !L_NSPECTV |
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| 267 | eprefVISgrid(j,1,iaer) = & |
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| 268 | eprefVISgrid(j,1,iaer) & |
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| 269 | + QREFvis(iaer,l)*dfi |
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| 270 | ENDDO !nsize |
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| 271 | ELSE ! INFRARED DOMAIN ---------- |
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| 272 | ! 2.3.3.ir Initialization |
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| 273 | epIRgrid(j,1,:,iaer)=0. |
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| 274 | omegIRgrid(j,1,:,iaer)=0. |
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| 275 | gIRgrid(j,1,:,iaer)=0. |
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| 276 | eprefIRgrid(j,1,iaer)=0. |
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| 277 | ! 2.3.4.ir Log-normal distribution |
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| 278 | DO l=1,nsize(iaer,idomain)+1 |
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| 279 | dfi_tmp(l) = log(radiusint(l)/r_g) / & |
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| 280 | sqrt(2.)/sigma_g |
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| 281 | ENDDO |
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| 282 | DO l=1,nsize(iaer,idomain) |
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| 283 | dfi = 0.5*( derf(dfi_tmp(l+1)) - & |
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| 284 | derf(dfi_tmp(l)) ) |
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| 285 | DO m=1,L_NSPECTI |
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| 286 | epIRgrid(j,1,m,iaer) = & |
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| 287 | epIRgrid(j,1,m,iaer) & |
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| 288 | + QIRsQREF(m,iaer,l)*dfi |
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| 289 | omegIRgrid(j,1,m,iaer) = & |
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| 290 | omegIRgrid(j,1,m,iaer) & |
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| 291 | + omegaIR(m,iaer,l)*dfi |
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| 292 | gIRgrid(j,1,m,iaer) = & |
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| 293 | gIRgrid(j,1,m,iaer) & |
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| 294 | + gIR(m,iaer,l)*dfi |
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| 295 | ENDDO !L_NSPECTI |
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| 296 | eprefIRgrid(j,1,iaer) = & |
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| 297 | eprefIRgrid(j,1,iaer) & |
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| 298 | + QREFir(iaer,l)*dfi |
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| 299 | ENDDO !nsize |
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| 300 | ENDIF ! -------------------------- |
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| 301 | checkgrid(j,1,iaer,idomain) = .true. |
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| 302 | ENDIF !checkgrid |
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| 303 | ENDDO !grid_i |
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| 304 | ! 2.4 Linear interpolation |
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| 305 | k1 = (1-kx) |
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| 306 | k2 = kx |
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| 307 | IF (idomain.EQ.1) THEN ! VISIBLE ------------------------ |
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| 308 | DO m=1,L_NSPECTV |
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| 309 | QVISsQREF3d(ig,lg,m,iaer) = & |
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| 310 | k1*epVISgrid(grid_i,1,m,iaer) + & |
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| 311 | k2*epVISgrid(grid_i+1,1,m,iaer) |
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| 312 | omegaVIS3d(ig,lg,m,iaer) = & |
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| 313 | k1*omegVISgrid(grid_i,1,m,iaer) + & |
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| 314 | k2*omegVISgrid(grid_i+1,1,m,iaer) |
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| 315 | gVIS3d(ig,lg,m,iaer) = & |
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| 316 | k1*gVISgrid(grid_i,1,m,iaer) + & |
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| 317 | k2*gVISgrid(grid_i+1,1,m,iaer) |
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| 318 | ENDDO !L_NSPECTV |
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| 319 | QREFvis3d(ig,lg,iaer) = & |
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| 320 | k1*eprefVISgrid(grid_i,1,iaer) + & |
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| 321 | k2*eprefVISgrid(grid_i+1,1,iaer) |
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| 322 | ELSE ! INFRARED ----------------------- |
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| 323 | DO m=1,L_NSPECTI |
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| 324 | QIRsQREF3d(ig,lg,m,iaer) = & |
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| 325 | k1*epIRgrid(grid_i,1,m,iaer) + & |
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| 326 | k2*epIRgrid(grid_i+1,1,m,iaer) |
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| 327 | omegaIR3d(ig,lg,m,iaer) = & |
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| 328 | k1*omegIRgrid(grid_i,1,m,iaer) + & |
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| 329 | k2*omegIRgrid(grid_i+1,1,m,iaer) |
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| 330 | gIR3d(ig,lg,m,iaer) = & |
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| 331 | k1*gIRgrid(grid_i,1,m,iaer) + & |
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| 332 | k2*gIRgrid(grid_i+1,1,m,iaer) |
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| 333 | ENDDO !L_NSPECTI |
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| 334 | QREFir3d(ig,lg,iaer) = & |
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| 335 | k1*eprefIRgrid(grid_i,1,iaer) + & |
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| 336 | k2*eprefIRgrid(grid_i+1,1,iaer) |
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| 337 | ENDIF ! -------------------------------- |
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| 338 | ENDDO !nlayermx |
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| 339 | ENDDO !ngridmx |
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| 340 | |
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| 341 | ENDDO ! idomain |
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| 342 | |
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| 343 | |
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| 344 | ENDIF ! nsize = 1 |
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| 345 | ENDDO ! iaer (loop on aerosol kind) |
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| 346 | |
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| 347 | ! open(116,file='QIRsQREF3dO.dat') |
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| 348 | ! write(116,*) QIRsQREF3d |
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| 349 | ! close(116) |
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| 350 | ! open(117,file='omegaIR3dO.dat') |
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| 351 | ! write(117,*) omegaIR3d |
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| 352 | ! close(117) |
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| 353 | ! open(118,file='gIR3dO.dat') |
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| 354 | ! write(118,*) gIR3d |
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| 355 | ! close(118) |
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| 356 | ! stop |
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| 357 | |
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| 358 | RETURN |
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| 359 | END subroutine aeroptproperties |
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