| 1 | module lwflux_mod |
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| 2 | |
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| 3 | implicit none |
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| 4 | |
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| 5 | contains |
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| 6 | |
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| 7 | subroutine lwflux (ig0,kdlon,kflev,dp |
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| 8 | . ,bsurf,btop,blev,blay,dbsublay |
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| 9 | . ,tlay, tlev, dt0 ! pour sortie dans g2d uniquement |
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| 10 | . ,emis |
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| 11 | . , tautotal,omegtotal,gtotal |
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| 12 | . ,coolrate,fluxground,fluxtop |
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| 13 | . ,netrad) |
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| 14 | |
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| 15 | c---------------------------------------------------------------------- |
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| 16 | c LWFLUX computes the fluxes |
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| 17 | c---------------------------------------------------------------------- |
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| 18 | |
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| 19 | use dimradmars_mod, only: ndlo2, nir, ndlon, nuco2, nflev |
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| 20 | use yomlw_h, only: nlaylte, xi, xi_ground, gcp |
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| 21 | implicit none |
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| 22 | |
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| 23 | c---------------------------------------------------------------------- |
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| 24 | c 0.1 arguments |
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| 25 | c --------- |
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| 26 | c inputs: |
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| 27 | c ------- |
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| 28 | integer,intent(in) :: ig0 |
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| 29 | integer,intent(in) :: kdlon ! part of ngrid |
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| 30 | integer,intent(in) :: kflev ! part of nlayer |
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| 31 | |
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| 32 | real,intent(in) :: dp (ndlo2,kflev) ! layer pressure thickness (Pa) |
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| 33 | |
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| 34 | real,intent(in) :: bsurf (ndlo2,nir) ! surface spectral planck function |
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| 35 | real,intent(in) :: blev (ndlo2,nir,kflev+1) ! level spectral planck function |
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| 36 | real,intent(in) :: blay (ndlo2,nir,kflev) ! layer spectral planck function |
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| 37 | real,intent(in) :: btop (ndlo2,nir) ! top spectral planck function |
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| 38 | real,intent(in) :: dbsublay (ndlo2,nir,2*kflev) ! layer gradient spectral planck |
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| 39 | ! function in sub layers |
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| 40 | |
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| 41 | real,intent(in) :: dt0 (ndlo2) ! surface temperature discontinuity |
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| 42 | real,intent(in) :: tlay (ndlo2,kflev) ! layer temperature |
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| 43 | real,intent(in) :: tlev (ndlo2,kflev+1) ! level temperature |
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| 44 | |
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| 45 | real,intent(in) :: emis (ndlo2) ! surface emissivity |
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| 46 | |
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| 47 | real,intent(in) :: tautotal(ndlo2,kflev,nir) ! \ Total single scattering |
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| 48 | real,intent(in) :: omegtotal(ndlo2,kflev,nir) ! > properties (Addition of the |
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| 49 | real,intent(in) :: gtotal(ndlo2,kflev,nir) ! / NAERKIND aerosols prop.) |
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| 50 | |
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| 51 | |
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| 52 | c outputs: |
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| 53 | c -------- |
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| 54 | real,intent(out) :: coolrate(ndlo2,kflev) ! radiative cooling rate (K/s) |
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| 55 | real,intent(out) :: netrad (ndlo2,kflev) ! radiative budget (W/m2) |
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| 56 | real,intent(out) :: fluxground(ndlo2) ! downward flux on the ground |
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| 57 | ! for surface radiative budget |
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| 58 | real,intent(out) :: fluxtop(ndlo2) ! upward flux on the top of atm ("OLR") |
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| 59 | |
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| 60 | |
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| 61 | c---------------------------------------------------------------------- |
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| 62 | c 0.2 local arrays |
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| 63 | c ------------ |
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| 64 | |
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| 65 | integer ja,jl,j,i,ig1d,ig,l |
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| 66 | real ksidb (ndlon,nuco2+1,0:nflev+1,0:nflev+1) ! net exchange rate (W/m2) |
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| 67 | |
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| 68 | real dpsgcp (0:nflev+1,0:nflev+1) ! dp/(g.cp) |
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| 69 | real temp (0:nflev+1,0:nflev+1) |
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| 70 | |
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| 71 | real fluxdiff(ndlon,2,nflev+1) ! diffusion flux: upward(1) downward(2) |
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| 72 | |
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| 73 | real*4 reel4 |
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| 74 | |
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| 75 | c To compute IR flux in the atmosphere (For diagnostic only !!) |
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| 76 | logical computeflux |
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| 77 | real coefd(kdlon,nuco2,nflev+1,nflev+1) |
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| 78 | real coefu(kdlon,nuco2,0:nflev,nflev+1) |
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| 79 | real flw_up(kdlon,nflev+1), flw_dn(kdlon,nflev+1) ! fluxes (W/m2) |
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| 80 | |
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| 81 | |
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| 82 | ksidb(:,:,:,:)=0 |
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| 83 | |
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| 84 | c---------------------------------------------------------------------- |
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| 85 | c 1.1 exchanges (layer i <--> all layers up to i) |
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| 86 | c ------------------------------------------- |
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| 87 | |
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| 88 | do i = 1,nlaylte |
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| 89 | do j = i+1,nlaylte |
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| 90 | do ja = 1,nuco2 |
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| 91 | do jl = 1,kdlon |
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| 92 | |
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| 93 | ksidb(jl,ja,i,j) = xi(ig0+jl,ja,i,j) |
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| 94 | . * (blay(jl,ja,j)-blay(jl,ja,i)) |
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| 95 | c ksidb reciprocity |
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| 96 | c ----------------- |
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| 97 | ksidb(jl,ja,j,i) = -ksidb(jl,ja,i,j) |
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| 98 | |
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| 99 | enddo |
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| 100 | enddo |
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| 101 | enddo |
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| 102 | enddo |
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| 103 | |
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| 104 | c---------------------------------------------------------------------- |
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| 105 | c 1.2 exchanges (ground <--> all layers) |
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| 106 | c ---------------------------------- |
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| 107 | |
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| 108 | do i = 1,nlaylte |
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| 109 | do ja = 1,nuco2 |
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| 110 | do jl = 1,kdlon |
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| 111 | |
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| 112 | ksidb(jl,ja,i,0) = xi(ig0+jl,ja,0,i) |
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| 113 | . * (bsurf(jl,ja)-blay(jl,ja,i)) |
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| 114 | c ksidb reciprocity |
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| 115 | c ----------------- |
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| 116 | ksidb(jl,ja,0,i) = -ksidb(jl,ja,i,0) |
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| 117 | |
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| 118 | enddo |
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| 119 | enddo |
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| 120 | enddo |
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| 121 | |
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| 122 | c-------------------------------------------------------- |
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| 123 | c Here we add the neighbour contribution |
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| 124 | c for exchanges between ground and first layer |
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| 125 | c-------------------------------------------------------- |
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| 126 | |
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| 127 | do ja = 1,nuco2 |
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| 128 | do jl = 1,kdlon |
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| 129 | |
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| 130 | ksidb(jl,ja,1,0) = ksidb(jl,ja,1,0) |
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| 131 | . - xi_ground(ig0+jl,ja) |
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| 132 | . * (blev(jl,ja,1)-blay(jl,ja,1)) |
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| 133 | |
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| 134 | cc ksidb reciprocity |
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| 135 | cc ----------------- |
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| 136 | ksidb(jl,ja,0,1) = - ksidb(jl,ja,1,0) |
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| 137 | |
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| 138 | enddo |
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| 139 | enddo |
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| 140 | |
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| 141 | c---------------------------------------------------------------------- |
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| 142 | c 1.3 exchanges (layer i <--> space) |
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| 143 | c ------------------------------ |
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| 144 | |
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| 145 | do i = 1,nlaylte |
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| 146 | do ja = 1,nuco2 |
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| 147 | do jl = 1,kdlon |
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| 148 | |
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| 149 | ksidb(jl,ja,i,nlaylte+1) = xi(ig0+jl,ja,i,nlaylte+1) |
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| 150 | . * (-blay(jl,ja,i)) |
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| 151 | c ksidb reciprocity |
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| 152 | c ----------------- |
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| 153 | ksidb(jl,ja,nlaylte+1,i) = - ksidb(jl,ja,i,nlaylte+1) |
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| 154 | |
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| 155 | enddo |
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| 156 | enddo |
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| 157 | enddo |
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| 158 | |
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| 159 | c---------------------------------------------------------------------- |
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| 160 | c 1.4 exchanges (ground <--> space) |
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| 161 | c ----------------------------- |
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| 162 | |
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| 163 | do ja = 1,nuco2 |
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| 164 | do jl = 1,kdlon |
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| 165 | |
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| 166 | ksidb(jl,ja,0,nlaylte+1) = xi(ig0+jl,ja,0,nlaylte+1) |
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| 167 | . * (-bsurf(jl,ja)) |
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| 168 | |
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| 169 | c ksidb reciprocity |
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| 170 | c ----------------- |
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| 171 | ksidb(jl,ja,nlaylte+1,0) = - ksidb(jl,ja,0,nlaylte+1) |
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| 172 | |
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| 173 | enddo |
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| 174 | enddo |
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| 175 | |
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| 176 | c---------------------------------------------------------------------- |
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| 177 | c 2.0 sum of band 1 and 2 of co2 contribution |
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| 178 | c --------------------------------------- |
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| 179 | |
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| 180 | do i = 0,nlaylte+1 |
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| 181 | do j = 0,nlaylte+1 |
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| 182 | do jl = 1,kdlon |
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| 183 | |
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| 184 | ksidb(jl,3,i,j)= ksidb(jl,1,i,j) + ksidb(jl,2,i,j) |
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| 185 | |
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| 186 | enddo |
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| 187 | enddo |
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| 188 | enddo |
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| 189 | |
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| 190 | c---------------------------------------------------------------------- |
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| 191 | c 3.0 Diffusion |
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| 192 | c --------- |
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| 193 | |
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| 194 | i = nlaylte+1 |
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| 195 | do jl = 1,kdlon |
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| 196 | fluxdiff(jl,1,i) = 0. |
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| 197 | fluxdiff(jl,2,i) = 0. |
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| 198 | enddo |
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| 199 | |
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| 200 | call lwdiff (kdlon,kflev |
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| 201 | . ,bsurf,btop,dbsublay |
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| 202 | . ,tautotal,omegtotal,gtotal |
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| 203 | . ,emis,fluxdiff) |
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| 204 | |
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| 205 | c---------------------------------------------------------------------- |
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| 206 | c 4.0 Radiative Budget for each layer i |
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| 207 | c --------------------------------- |
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| 208 | |
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| 209 | do i = 1,nlaylte |
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| 210 | do jl = 1,kdlon |
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| 211 | netrad(jl,i) = 0. |
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| 212 | enddo |
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| 213 | enddo |
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| 214 | |
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| 215 | do i = 1,nlaylte |
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| 216 | do j = 0,nlaylte+1 |
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| 217 | do jl = 1,kdlon |
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| 218 | |
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| 219 | netrad(jl,i) = netrad(jl,i) + ksidb(jl,3,i,j) |
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| 220 | |
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| 221 | enddo |
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| 222 | enddo |
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| 223 | enddo |
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| 224 | c diffusion contribution |
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| 225 | c ---------------------- |
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| 226 | do i = 1,nlaylte |
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| 227 | do jl = 1,kdlon |
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| 228 | |
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| 229 | netrad(jl,i) = netrad(jl,i) |
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| 230 | . - fluxdiff(jl,1,i+1) - fluxdiff(jl,2,i+1) |
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| 231 | . + fluxdiff(jl,1,i) + fluxdiff(jl,2,i) |
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| 232 | |
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| 233 | enddo |
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| 234 | enddo |
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| 235 | |
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| 236 | c---------------------------------------------------------------------- |
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| 237 | c 4.0 cooling rate for each layer i |
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| 238 | c ----------------------------- |
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| 239 | |
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| 240 | do i = 1,nlaylte |
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| 241 | do jl = 1,kdlon |
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| 242 | |
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| 243 | coolrate(jl,i) = gcp * netrad(jl,i) / dp(jl,i) |
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| 244 | |
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| 245 | enddo |
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| 246 | enddo |
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| 247 | |
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| 248 | c---------------------------------------------------------------------- |
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| 249 | c 5.0 downward flux (all layers --> ground): "fluxground" |
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| 250 | c --------------------------------------------------- |
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| 251 | |
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| 252 | do jl = 1,kdlon |
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| 253 | fluxground(jl) = 0. |
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| 254 | enddo |
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| 255 | |
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| 256 | do i = 1,nlaylte |
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| 257 | do ja = 1,nuco2 |
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| 258 | do jl = 1,kdlon |
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| 259 | |
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| 260 | fluxground(jl) = fluxground(jl) |
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| 261 | . + xi(ig0+jl,ja,0,i) * (blay(jl,ja,i)) |
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| 262 | |
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| 263 | enddo |
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| 264 | enddo |
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| 265 | enddo |
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| 266 | |
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| 267 | do jl = 1,kdlon |
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| 268 | fluxground(jl) = fluxground(jl) - fluxdiff(jl,2,1) |
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| 269 | enddo |
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| 270 | |
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| 271 | c---------------------------------------------------------------------- |
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| 272 | c 6.0 outgoing flux (all layers --> space): "fluxtop" |
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| 273 | c --------------------------------------------------- |
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| 274 | |
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| 275 | do jl = 1,kdlon |
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| 276 | fluxtop(jl) = 0. |
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| 277 | enddo |
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| 278 | |
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| 279 | do i = 0,nlaylte |
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| 280 | do jl = 1,kdlon |
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| 281 | fluxtop(jl) = fluxtop(jl)- ksidb(jl,3,i,nlaylte+1) |
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| 282 | enddo |
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| 283 | enddo |
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| 284 | |
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| 285 | do jl = 1,kdlon |
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| 286 | fluxtop(jl) = fluxtop(jl) + fluxdiff(jl,1,nlaylte+1) |
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| 287 | enddo |
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| 288 | |
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| 289 | c---------------------------------------------------------------------- |
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| 290 | c 6.5 ONLY FOR DIAGNOSTIC : Compute IR flux in the atmosphere |
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| 291 | c ------------------- |
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| 292 | c The broadband fluxes (W.m-2) at every level from surface level (l=1) |
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| 293 | c up the top of the upper layer (here: l=nlaylte+1) are: |
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| 294 | c upward : flw_up(ig1d,l) ; downward : flw_dn(ig1d,j) |
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| 295 | c |
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| 296 | computeflux = .false. |
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| 297 | |
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| 298 | IF (computeflux) THEN ! not used by the GCM only for diagnostic ! |
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| 299 | c upward flux |
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| 300 | c ~~~~~~~~~~~ |
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| 301 | do i = 0,nlaylte |
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| 302 | do j = 1,nlaylte+1 |
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| 303 | do ja = 1,nuco2 |
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| 304 | do jl = 1,kdlon |
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| 305 | coefu(jl,ja,i,j) =0. |
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| 306 | do l=j,nlaylte+1 |
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| 307 | coefu(jl,ja,i,j)=coefu(jl,ja,i,j)+xi(ig0+jl,ja,l,i) |
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| 308 | end do |
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| 309 | |
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| 310 | enddo |
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| 311 | enddo |
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| 312 | enddo |
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| 313 | enddo |
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| 314 | do j = 1,nlaylte+1 |
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| 315 | do jl = 1,kdlon |
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| 316 | flw_up(jl,j) = 0. |
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| 317 | do ja = 1,nuco2 |
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| 318 | flw_up(jl,j)=flw_up(jl,j)+bsurf(jl,ja)*coefu(jl,ja,0,j) |
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| 319 | do i=1,j-1 |
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| 320 | flw_up(jl,j)=flw_up(jl,j)+blay(jl,ja,i)*coefu(jl,ja,i,j) |
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| 321 | end do |
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| 322 | end do |
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| 323 | flw_up(jl,j)=flw_up(jl,j) + fluxdiff(jl,1,j) |
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| 324 | end do |
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| 325 | end do |
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| 326 | |
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| 327 | c downward flux |
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| 328 | c ~~~~~~~~~~~~~ |
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| 329 | do i = 1,nlaylte+1 |
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| 330 | do j = 1,nlaylte+1 |
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| 331 | do ja = 1,nuco2 |
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| 332 | do jl = 1,kdlon |
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| 333 | coefd(jl,ja,i,j) =0. |
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| 334 | do l=0,j-1 |
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| 335 | coefd(jl,ja,i,j)=coefd(jl,ja,i,j)+xi(ig0+jl,ja,l,i) |
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| 336 | end do |
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| 337 | enddo |
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| 338 | enddo |
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| 339 | enddo |
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| 340 | enddo |
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| 341 | do j = 1,nlaylte+1 |
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| 342 | do jl = 1,kdlon |
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| 343 | flw_dn(jl,j) = 0. |
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| 344 | do ja = 1,nuco2 |
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| 345 | do i=j,nlaylte |
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| 346 | flw_dn(jl,j)=flw_dn(jl,j)+blay(jl,ja,i)*coefd(jl,ja,i,j) |
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| 347 | end do |
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| 348 | end do |
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| 349 | flw_dn(jl,j)=flw_dn(jl,j) - fluxdiff(jl,2,j) |
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| 350 | end do |
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| 351 | end do |
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| 352 | END IF ! of IF (computeflux) |
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| 353 | |
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| 354 | end subroutine lwflux |
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| 355 | |
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| 356 | end module lwflux_mod |
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