[4] | 1 | SUBROUTINE ice_rad(nlay_s,nlay_i,kideb,kiut) |
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| 2 | |
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| 3 | !=============================================================================! |
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| 4 | ! |
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| 5 | ! ice_rad : |
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| 6 | ! |
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| 7 | ! Transmission / absorption of radiation |
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| 8 | ! through the snow-ice system |
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| 9 | ! |
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| 10 | ! (c) v1.0 Martouf, UCL-ASTR, June 2007. Nadal Federer 1 set partout |
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| 11 | ! v2.0 Oct 2011: clarification of snow and the SSL. |
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| 12 | ! Les diables n'y sont pas |
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| 13 | ! |
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| 14 | ! Practically, downwelling radiation decreases exponentially |
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| 15 | ! through the snow-ice surface, except near the surface |
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| 16 | ! The uppermost portion of the snow is highly scattering (Perovich, |
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| 17 | ! J. Glaciol., 2007). For sea ice, if melt has occured, a |
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| 18 | ! a highly scattering layer is formed near the surface (Light et |
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| 19 | ! al., JGR 2008). This layer is referred to as "Surface Scattering Layer" (SSL) |
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| 20 | ! |
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| 21 | ! We assume that the surface layer, both in snow and ice, absorbs |
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| 22 | ! all near infrared radiation, so that the remaining radiation is |
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| 23 | ! only in the visible part of the SW spectrum. |
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| 24 | ! |
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| 25 | ! Here, snow and sea ice are represented as a highly-scattering |
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| 26 | ! surface layer (thickness h_not_s / h_not_i) and a deeper layer |
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| 27 | ! |
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| 28 | ! The surface layer has radiative properties zrad_kappa_i_su_x, |
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| 29 | ! zrad_kappa_s_su_x, |
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| 30 | ! Depth has radiative properties zrad_kappa_s_de_x, |
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| 31 | ! zrad_kappa_i_de_x |
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| 32 | ! |
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| 33 | ! Algae and detritus also absorb radiation |
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| 34 | ! |
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| 35 | ! If sea ice is snow covered the SSL has a depth equal to zero |
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| 36 | ! |
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| 37 | ! 2 schemes for the SSL are used |
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| 38 | ! ... more ... |
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| 39 | ! |
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| 40 | ! 2 discretizations for radiative transfer are coded |
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| 41 | ! ... more ... |
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| 42 | ! |
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| 43 | !=============================================================================! |
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| 44 | ! |
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| 45 | |
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| 46 | USE lib_fortran |
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| 47 | |
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| 48 | INCLUDE 'type.com' |
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| 49 | INCLUDE 'para.com' |
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| 50 | INCLUDE 'const.com' |
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| 51 | INCLUDE 'ice.com' |
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| 52 | INCLUDE 'thermo.com' |
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| 53 | INCLUDE 'bio.com' |
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| 54 | |
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| 55 | !-----------------------------------------------------------------------------! |
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| 56 | |
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| 57 | ! Local variables |
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| 58 | REAL(8), DIMENSION(maxnlay) :: |
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| 59 | & zkappa_alg , !: extinction coefficient for algae |
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| 60 | & zkappa_det !: extinction coefficient for detritus |
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| 61 | |
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| 62 | LOGICAL :: ln_write |
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| 63 | |
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| 64 | zeps = 1.0e-20 |
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| 65 | |
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| 66 | ln_write = .FALSE. |
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| 67 | !==============================================================================! |
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| 68 | |
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| 69 | WRITE(numout,*) |
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| 70 | WRITE(numout,*) ' ** ice_rad : ' |
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| 71 | WRITE(numout,*) ' ~~~~~~~~~~~~ ' |
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| 72 | WRITE(numout,*) ' c_rad_scheme : ', c_rad_scheme |
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| 73 | WRITE(numout,*) ' c_rad_discr : ', c_rad_discr |
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| 74 | WRITE(numout,*) ' h_not_s: ', h_not_s |
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| 75 | WRITE(numout,*) ' h_not_i: ', h_not_i |
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| 76 | |
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| 77 | WRITE(numout,*) |
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| 78 | |
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| 79 | DO ji = kideb, kiut |
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| 80 | ! |
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| 81 | !------------------------------------------------------------------------------! |
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| 82 | ! 1) Surface transmission parameter ! |
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| 83 | !------------------------------------------------------------------------------! |
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| 84 | ! |
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| 85 | IF ( ln_write ) THEN |
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| 86 | WRITE(numout,*) |
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| 87 | WRITE(numout,*) ' Surface transmission parameter ' |
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| 88 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
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| 89 | ENDIF |
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| 90 | |
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| 91 | !-------------------------------- |
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| 92 | ! Snow and surface melt switches |
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| 93 | !-------------------------------- |
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| 94 | ! Is there snow or not ? |
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| 95 | isnow = INT( 1.0 - MAX( 0.0 , SIGN( 1.0d0 , - ht_s_b(ji) ) ) ) |
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| 96 | |
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| 97 | IF ( ln_write ) THEN |
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| 98 | WRITE(numout,*) ' Test isnow ', ji |
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| 99 | WRITE(numout,*) ' ht_s_b : ', ht_s_b(ji) |
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| 100 | WRITE(numout,*) ' SIGN : ', SIGN( 1.0d0 , - ht_s_b(ji) ) |
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| 101 | WRITE(numout,*) ' MAX : ', MAX( 0.0 , |
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| 102 | & SIGN( 1.0d0 , - ht_s_b(ji) ) ) |
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| 103 | WRITE(numout,*) ' ARG : ', 1.0 - MAX( 0.0 , SIGN( 1.0d0 , |
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| 104 | & - ht_s_b(ji) ) ) |
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| 105 | ENDIF |
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| 106 | |
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| 107 | ! Melting or not |
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| 108 | imelt_su = INT( MAX( 0.0 , SIGN( 1.0d0 , t_su_b(ji)-tpw) ) ) ! 1 if surface melt |
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| 109 | imelt_sn = INT( MAX( 0.0 , SIGN( 1.0d0 , t_s_b(ji,1)-tpw) ) ) ! 1 if snow melts |
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| 110 | imelt = 0 |
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| 111 | IF ( ( imelt_su .EQ. 1 ) .OR. ( imelt_sn .EQ. 1 ) ) imelt = 1 |
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| 112 | |
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| 113 | !----------------------------------- |
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| 114 | ! Surface transmissivity i_o (inot) |
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| 115 | !----------------------------------- |
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| 116 | IF ( c_rad_scheme .EQ. 'INOT' ) THEN |
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| 117 | z_inot_vis_snow = rad_inot_s_dry * ( 1.0 - imelt ) + |
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| 118 | & rad_inot_s_wet * imelt |
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| 119 | z_inot_vis_ice = rad_inot_i_dry * ( 1.0 - imelt ) + |
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| 120 | & rad_inot_i_wet * imelt |
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| 121 | z_inot_vis = isnow * z_inot_vis_snow + |
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| 122 | & ( 1.0 - isnow ) * z_inot_vis_ice |
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| 123 | ! z_inot_vis = isnow * rad_inot_s + ( 1.0 - isnow ) * rad_inot_i |
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| 124 | z_inot = z_inot_vis * fpar_fsw |
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| 125 | ENDIF |
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| 126 | IF ( c_rad_scheme .EQ. 'EXTC' ) THEN |
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| 127 | z_inot = 1.0 |
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| 128 | ENDIF |
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| 129 | ab(ji) = 1.0 - z_inot ! used in other routines |
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| 130 | |
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| 131 | !------------------------------------------- |
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| 132 | ! Solar radiation transmitted below the SSL |
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| 133 | !------------------------------------------- |
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| 134 | ftrice = fsolgb(ji) * ( 1.0 - ab(ji) ) |
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| 135 | |
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| 136 | IF ( ln_write ) THEN |
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| 137 | WRITE(numout,*) ' isnow : ', isnow |
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| 138 | WRITE(numout,*) ' imelt : ', imelt |
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| 139 | WRITE(numout,*) ' z_inot: ', z_inot |
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| 140 | WRITE(numout,*) ' ab : ', ab(ji) |
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| 141 | WRITE(numout,*) ' ftrice : ', ftrice |
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| 142 | ENDIF |
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| 143 | ! |
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| 144 | !------------------------------------------------------------------------------! |
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| 145 | ! 2) Extinction coefficients |
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| 146 | !------------------------------------------------------------------------------! |
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| 147 | ! |
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| 148 | IF ( ln_write ) THEN |
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| 149 | WRITE(numout,*) |
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| 150 | WRITE(numout,*) ' Extinction coefficients ' |
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| 151 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 152 | WRITE(numout,*) |
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| 153 | ENDIF |
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| 154 | |
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| 155 | zmurad = 0.656 ! angle factor |
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| 156 | zchla = 0.0 ! temporary value of chla in mg/m-3 |
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| 157 | |
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| 158 | ! Chlorophyll a interpolation |
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| 159 | IF ( c_bio_model .EQ. 'KRILL' ) THEN |
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| 160 | CALL ice_bio_interp_bio2phy(kideb,kiut,nlay_i,.FALSE.) |
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| 161 | ELSE |
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| 162 | DO layer = 1, nlay_bio |
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| 163 | chla_i(layer) = 0.0 |
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| 164 | END DO |
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| 165 | ENDIF |
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| 166 | |
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| 167 | IF ( ln_write ) THEN |
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| 168 | WRITE(numout,*) ' chla_i : ', |
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| 169 | & ( chla_i(layer), layer = 1, nlay_i ) |
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| 170 | WRITE(numout,*) |
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| 171 | ENDIF |
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| 172 | |
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| 173 | ! chlorophyll and detritus extinction coefficients |
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| 174 | DO layer = 1, nlay_i |
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| 175 | zchla = chla_i(layer) |
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| 176 | zkappa_alg(layer) = zchla * astar_alg / zmurad |
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| 177 | zkappa_det(layer) = zkappa_alg(layer) * fdet_alg |
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| 178 | END DO |
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| 179 | |
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| 180 | ! snow and ice extinction coefficients |
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| 181 | IF ( c_rad_scheme .EQ. 'INOT' ) THEN |
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| 182 | zrad_kappa_s_su = 0.0 |
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| 183 | zrad_kappa_i_su = 0.0 |
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| 184 | ENDIF |
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| 185 | IF ( c_rad_scheme .EQ. 'EXTC' ) THEN |
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| 186 | zrad_kappa_s_su = ( 1 - imelt ) * rad_kappa_s_su_d + |
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| 187 | & imelt * rad_kappa_s_su_m |
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| 188 | zrad_kappa_i_su = ( 1 - imelt ) * rad_kappa_i_su_d + |
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| 189 | & imelt * rad_kappa_i_su_m |
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| 190 | ENDIF |
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| 191 | |
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| 192 | ! deep snow extinction coefficient |
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| 193 | zrad_kappa_s_de = ( 1 - imelt ) * rad_kappa_s_de_d + |
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| 194 | & imelt * rad_kappa_s_de_m |
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| 195 | |
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| 196 | ! deep ice extinction coefficient |
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| 197 | zrad_kappa_i_de = ( 1 - imelt ) * rad_kappa_i_de_d + |
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| 198 | & imelt * rad_kappa_i_de_m |
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| 199 | |
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| 200 | IF ( ln_write ) THEN |
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| 201 | WRITE(numout,*) ' zrad_kappa_s_su : ', zrad_kappa_s_su |
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| 202 | WRITE(numout,*) ' zrad_kappa_s_de : ', zrad_kappa_s_de |
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| 203 | WRITE(numout,*) ' zrad_kappa_i_de : ', zrad_kappa_i_de |
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| 204 | WRITE(numout,*) ' zrad_kappa_i_su : ', zrad_kappa_i_su |
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| 205 | |
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| 206 | WRITE(numout,*) ' zkappa_alg : ', ( zkappa_alg(layer), |
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| 207 | & layer = 1, nlay_i ) |
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| 208 | WRITE(numout,*) ' zkappa_det : ', ( zkappa_det(layer), |
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| 209 | & layer = 1, nlay_i ) |
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| 210 | ENDIF |
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| 211 | ! |
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| 212 | !------------------------------------------------------------------------------! |
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| 213 | ! 3) Radiation transmitted through / absorbed by snow ! |
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| 214 | !------------------------------------------------------------------------------! |
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| 215 | ! |
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| 216 | IF ( ln_write ) THEN |
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| 217 | WRITE(numout,*) |
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| 218 | WRITE(numout,*) ' Radiation absorption in snow ' |
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| 219 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
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| 220 | WRITE(numout,*) |
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| 221 | ENDIF |
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| 222 | |
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| 223 | radtr_s(0) = ftrice |
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| 224 | zdh1 = MIN( h_not_s, ht_s_b(ji) ) |
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| 225 | zdh2 = MIN( MAX( ht_s_b(ji) - h_not_s, 0. ), ht_s_b(ji) ) |
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| 226 | |
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| 227 | IF ( ln_write ) THEN |
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| 228 | WRITE(numout,*) ' ftrice : ', ftrice |
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| 229 | WRITE(numout,*) ' zdh1 : ', zdh1 |
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| 230 | WRITE(numout,*) ' zdh2 : ', zdh2 |
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| 231 | ENDIF |
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| 232 | |
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| 233 | ! scheme based on transmission |
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| 234 | ! other scheme based on transmission, more exact, the other one seems |
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| 235 | ! not to work for high transmission coefficient and small SSL |
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| 236 | IF ( c_rad_discr .EQ. 'TRA' ) THEN |
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| 237 | zi1 = radtr_s(0) * EXP( -zrad_kappa_s_su * zdh1 ) |
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| 238 | radtr_s(1) = zi1 * EXP( -zrad_kappa_s_de * zdh2 ) |
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| 239 | radab_s(1) = radtr_s(0) - radtr_s(1) |
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| 240 | IF ( ln_write) WRITE(numout,*) ' zi1 : ', zi1 |
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| 241 | ENDIF |
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| 242 | |
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| 243 | ! scheme based on absorption |
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| 244 | IF ( c_rad_discr .EQ. 'ABS' ) THEN |
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| 245 | zrada1 = radtr_s(0) * zdh1 * zrad_kappa_s_su * |
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| 246 | & EXP( - zrad_kappa_s_su * zdh1 ) |
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| 247 | zi1 = radtr_s(0) - zrada1 |
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| 248 | zrada2 = zi1 * zdh2 * zrad_kappa_s_de * |
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| 249 | & EXP( - zrad_kappa_s_de * zdh2 ) |
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| 250 | |
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| 251 | IF ( ln_write ) THEN |
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| 252 | WRITE(numout,*) ' zrada1 : ', zrada1 |
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| 253 | WRITE(numout,*) ' zi1 : ', zi1 |
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| 254 | WRITE(numout,*) ' zrada2 : ', zrada2 |
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| 255 | ENDIF |
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| 256 | |
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| 257 | radab_s(1) = zrada1 + zrada2 |
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| 258 | radtr_s(1) = radtr_s(0) - radab_s(1) |
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| 259 | ENDIF |
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| 260 | |
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| 261 | IF ( ln_write ) THEN |
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| 262 | WRITE(numout,*) ' ht_s_b : ', ht_s_b(ji) |
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| 263 | WRITE(numout,*) ' radtr_s : ', |
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| 264 | & ( radtr_s(layer) , layer = 0, nlay_s ) |
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| 265 | WRITE(numout,*) ' radab_s : ', |
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| 266 | & ( radab_s(layer) , layer = 1, nlay_s ) |
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| 267 | ENDIF |
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| 268 | ! |
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| 269 | !------------------------------------------------------------------------------! |
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| 270 | ! 4) Radiation transmitted through / absorbed by ice ! |
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| 271 | !------------------------------------------------------------------------------! |
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| 272 | ! |
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| 273 | IF ( ln_write ) THEN |
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| 274 | WRITE(numout,*) |
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| 275 | WRITE(numout,*) ' Radiation absorption in ice ' |
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| 276 | WRITE(numout,*) ' ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ' |
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| 277 | WRITE(numout,*) |
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| 278 | ENDIF |
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| 279 | |
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| 280 | ! transmitted at the upper ice layer |
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| 281 | radtr_i(0) = isnow * radtr_s(nlay_s) + ( 1. - isnow ) * ftrice |
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| 282 | ! thickness of surface SSL in sea ice is zero if there is no snow |
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| 283 | zh_ssl = isnow * 0. + ( 1. - isnow ) * h_not_i |
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| 284 | IF ( ln_write ) THEN |
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| 285 | WRITE(numout,*) ' zh_ssl : ', zh_ssl |
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| 286 | ENDIF |
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| 287 | |
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| 288 | ! radiation absorbed physically and biologically in each layer |
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| 289 | zz0 = 0. |
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| 290 | zz1 = 0. |
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| 291 | DO layer = 1, nlay_i |
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| 292 | zz1 = zz1 + deltaz_i_phy(layer) |
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| 293 | |
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| 294 | IF ( ln_write ) THEN |
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| 295 | WRITE(numout,*) ' zz0 : ', zz0 |
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| 296 | WRITE(numout,*) ' zz1 : ', zz1 |
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| 297 | ENDIF |
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| 298 | |
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| 299 | zdh1 = MIN ( MAX ( zh_ssl - zz0 , 0. ) , |
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| 300 | & deltaz_i_phy(layer) ) ! part of the ice layer belonging to the SSL |
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| 301 | zdh2 = MIN ( MAX ( zz1 - zh_ssl , 0. ) , |
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| 302 | & deltaz_i_phy(layer) ) ! part of the ice layer belonging to the deep ice |
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| 303 | zz0 = zz1 |
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| 304 | |
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| 305 | IF ( ln_write ) THEN |
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| 306 | WRITE(numout,*) ' zh_ssl : ', zh_ssl |
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| 307 | WRITE(numout,*) ' zz1-zh_ssl ',zz1 - zh_ssl |
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| 308 | WRITE(numout,*) ' deltaz_i_phy : ', deltaz_i_phy(layer) |
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| 309 | |
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| 310 | WRITE(numout,*) ' ' |
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| 311 | WRITE(numout,*) ' layer : ', layer |
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| 312 | WRITE(numout,*) ' zdh1 : ', zdh1 |
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| 313 | WRITE(numout,*) ' zdh2 : ', zdh2 |
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| 314 | WRITE(numout,*) ' deltaz_i_phy : ', deltaz_i_phy(layer) |
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| 315 | WRITE(numout,*) ' ' |
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| 316 | ENDIF |
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| 317 | |
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| 318 | ! Extinction coefficient in the SSL |
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| 319 | zkappa1_phy = zrad_kappa_i_su + zkappa_det(layer) ! physical extinction in SSL |
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| 320 | zkappa1 = zkappa1_phy + zkappa_alg(layer) ! total extinction |
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| 321 | |
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| 322 | ! Extinction coefficient deeper in the ice |
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| 323 | zkappa2_phy = zrad_kappa_i_de + zkappa_det(layer) ! physical extinction at depth |
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| 324 | zkappa2 = zkappa2_phy + zkappa_alg(layer) ! total extinction at depth |
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| 325 | |
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| 326 | IF ( ln_write ) THEN |
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| 327 | WRITE(numout,*) ' zkappa1_phy : ', zkappa1_phy |
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| 328 | WRITE(numout,*) ' zkappa1 : ', zkappa1 |
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| 329 | WRITE(numout,*) ' zkappa2_phy : ', zkappa2_phy |
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| 330 | WRITE(numout,*) ' zkappa2 : ', zkappa2 |
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| 331 | ENDIF |
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| 332 | |
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| 333 | !------------------------------ |
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| 334 | ! Scheme based on transmission |
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| 335 | !------------------------------ |
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| 336 | IF ( c_rad_discr .EQ. 'TRA' ) THEN |
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| 337 | zi1 = radtr_i(layer-1) * EXP ( -zkappa1*zdh1 ) |
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| 338 | WRITE(numout,*) ' Discretization : ', 'TRA' |
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| 339 | WRITE(numout,*) ' zi1 : ', zi1 |
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| 340 | WRITE(numout,*) |
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| 341 | |
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| 342 | ! transmitted radiation |
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| 343 | radtr_i(layer) = zi1 * EXP( -zkappa2 * zdh2 ) |
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| 344 | ! absorbed radiation |
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| 345 | radab_i(layer) = radtr_i(layer-1) - radtr_i(layer) |
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| 346 | |
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| 347 | ! physically absorbed |
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| 348 | radab_phy_i(layer) = radab_i(layer) * deltaz_i_phy(layer) |
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| 349 | & * ( zkappa1_phy * zdh1 / MAX( zkappa1, zeps) |
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| 350 | & + zkappa2_phy * zdh2 / MAX( zkappa2, zeps) ) |
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| 351 | |
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| 352 | IF ( ln_write ) THEN |
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| 353 | WRITE(numout,*) ' deltaz_i_phy : ', deltaz_i_phy(layer) |
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| 354 | WRITE(numout,*) ' zkappa2 : ', zkappa2 |
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| 355 | WRITE(numout,*) ' zkappa2_phy : ', zkappa2_phy |
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| 356 | WRITE(numout,*) ' zdh2 : ', zdh2 |
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| 357 | WRITE(numout,*) ' radab_i : ', radab_i(layer) |
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| 358 | WRITE(numout,*) ' zkappa1 : ', zkappa1 |
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| 359 | WRITE(numout,*) ' zkappa1_phy : ', zkappa1_phy |
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| 360 | WRITE(numout,*) ' zdh1 : ', zdh1 |
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| 361 | ENDIF |
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| 362 | |
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| 363 | ! biologically absorbed |
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| 364 | radab_alg_i(layer) = zkappa_alg(layer) * radab_i(layer) |
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| 365 | & / deltaz_i_phy(layer) |
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| 366 | & * ( zdh1 / MAX ( zkappa1, zeps ) |
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| 367 | & + zdh2 / MAX ( zkappa2, zeps ) ) |
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| 368 | |
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| 369 | ENDIF |
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| 370 | |
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| 371 | !---------------------------- |
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| 372 | ! Scheme based on absorption |
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| 373 | !---------------------------- |
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| 374 | IF ( c_rad_discr .EQ. 'ABS' ) THEN |
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| 375 | zdummy = radtr_i(layer-1) * zdh1 * |
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| 376 | & EXP( - zkappa1 * zdh1 ) |
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| 377 | zrada1_phy = zkappa1_phy * zdummy ! physically absorbed |
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| 378 | zrada1_alg = zkappa_alg(layer) * zdummy ! biologically absorbed |
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| 379 | zrada1 = zrada1_phy + zrada1_alg ! total absorption |
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| 380 | zi1 = radtr_i(layer-1) - zrada1 ! radiance available below the SSL |
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| 381 | |
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| 382 | IF ( ln_write) THEN |
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| 383 | WRITE(numout,*) ' Discretization : ', 'ABS' |
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| 384 | WRITE(numout,*) ' zi1 : ', zi1 |
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| 385 | WRITE(numout,*) |
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| 386 | WRITE(numout,*) ' zdummy : ', zdummy |
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| 387 | WRITE(numout,*) ' zrada1_phy : ', zrada1_phy |
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| 388 | WRITE(numout,*) ' zrada1_alg : ', zrada1_alg |
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| 389 | WRITE(numout,*) ' zrada1 : ', zrada1 |
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| 390 | ENDIF |
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| 391 | |
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| 392 | zdummy = zi1 * zdh2 * EXP ( - zkappa2 * zdh2 ) |
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| 393 | zrada2_phy = zkappa2_phy * zdummy ! physically absorbed |
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| 394 | zrada2_alg = zkappa_alg(layer) * zdummy ! biologically absorbed |
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| 395 | zrada2 = zrada2_phy + zrada2_alg ! total absorption |
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| 396 | |
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| 397 | IF ( ln_write) THEN |
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| 398 | WRITE(numout,*) ' zdummy : ', zdummy |
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| 399 | WRITE(numout,*) ' zrada2_phy : ', zrada2_phy |
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| 400 | WRITE(numout,*) ' zrada2_alg : ', zrada2_alg |
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| 401 | WRITE(numout,*) ' zrada2 : ', zrada2 |
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| 402 | ENDIF |
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| 403 | |
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| 404 | ! Cumulated absorption |
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| 405 | radab_phy_i(layer) = zrada1_phy + zrada2_phy |
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| 406 | radab_alg_i(layer) = zrada1_alb + zrada2_alg |
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| 407 | radab_i(layer) = radab_phy_i(layer) + radab_alg_i(layer) |
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| 408 | |
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| 409 | ! Transmission below the layer |
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| 410 | radtr_i(layer) = radtr_i(layer-1) - radab_phy_i(layer) |
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| 411 | & - radab_alg_i(layer) |
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| 412 | ENDIF |
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| 413 | |
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| 414 | IF ( ln_write ) THEN |
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| 415 | WRITE(numout,*) ' radab_phy_i : ', radab_phy_i(layer) |
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| 416 | WRITE(numout,*) ' radab_alg_i : ', radab_alg_i(layer) |
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| 417 | WRITE(numout,*) ' radab_i : ', radab_i(layer) |
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| 418 | WRITE(numout,*) ' sum of both : ', radab_phy_i(layer) |
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| 419 | & + radab_alg_i(layer) |
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| 420 | WRITE(numout,*) ' radtr_i : ', radtr_i(layer) |
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| 421 | ENDIF |
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| 422 | |
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| 423 | END DO |
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| 424 | |
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| 425 | ! radiation sent to the ocean |
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| 426 | ftroce = radtr_i(nlay_i) |
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| 427 | |
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| 428 | ! |
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| 429 | !------------------------------------------------------------------------------! |
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| 430 | ! 5) PAR (phy and bio grids) |
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| 431 | !------------------------------------------------------------------------------! |
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| 432 | ! |
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| 433 | IF ( ln_write ) THEN |
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| 434 | WRITE(numout,*) |
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| 435 | WRITE(numout,*) ' PAR ' |
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| 436 | WRITE(numout,*) ' ~~~~' |
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| 437 | WRITE(numout,*) |
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| 438 | ENDIF |
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| 439 | ! PAR on phy grid (top of each layer) |
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| 440 | ! this choice was made to minimize sensitivity to grid type at comparable resolution) |
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| 441 | |
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| 442 | IF ( ln_write ) WRITE(numout,*) ' * physical grid ... ' |
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| 443 | |
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| 444 | WRITE(numout,*) ' qpar_fsw : ', qpar_fsw |
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| 445 | WRITE(numout,*) ' fpar_fsw : ', fpar_fsw |
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| 446 | |
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| 447 | DO layer = 1, nlay_i |
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| 448 | par(layer) = qpar_fsw / fpar_fsw * radtr_i(layer-1) |
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| 449 | END DO |
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| 450 | |
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| 451 | ! ! PAR on bio grid (top of each layer) |
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| 452 | IF ( ln_write ) WRITE(numout,*) ' * biological grid ... ' |
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| 453 | |
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| 454 | DO layer_bio = 1, nlay_bio |
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| 455 | ! identify in which layer the upper boundary of the bio layer is |
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| 456 | DO layer_phy = 1, nlay_bio |
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| 457 | zzb = zb_i_bio(layer_bio-1) |
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| 458 | zzf1 = zb_i_phy(layer_phy-1) |
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| 459 | zzf2 = zb_i_phy(layer_phy) |
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| 460 | IF ( ( zzb .GE. zzf1 ) .AND. ( zzb .LT. zzf2 ) ) |
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| 461 | & zindex = layer_phy |
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| 462 | END DO |
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| 463 | zm = ( radtr_i(zindex) - radtr_i(zindex-1) ) / |
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| 464 | & ( zb_i_phy(zindex) - zb_i_phy(zindex-1) ) |
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| 465 | zdh = zb_i_bio(layer_bio-1) - zb_i_phy(zindex-1) |
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| 466 | zdrad = zm * zdh |
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| 467 | par_bio(layer_bio) = radtr_i(zindex-1) + zdrad ! at the upper interface of the layer |
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| 468 | |
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| 469 | ! IF ( ln_write ) THEN |
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| 470 | ! WRITE(numout,*) |
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| 471 | ! WRITE(numout,*) ' layer : ', layer_bio |
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| 472 | ! WRITE(numout,*) ' zindex : ', zindex |
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| 473 | ! WRITE(numout,*) ' zb_i_bio : ', zb_i_bio(layer_bio-1) |
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| 474 | ! WRITE(numout,*) ' zb_i_phy : ', zb_i_phy(zindex-1), |
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| 475 | ! & zb_i_phy(zindex) |
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| 476 | ! WRITE(numout,*) ' radtr_i : ', radtr_i(zindex-1), |
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| 477 | ! & radtr_i(zindex) |
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| 478 | ! WRITE(numout,*) ' In W/m2 ... ' |
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| 479 | ! WRITE(numout,*) ' par_bio : ', par_bio(layer_bio) |
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| 480 | ! ENDIF |
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| 481 | |
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| 482 | par_bio(layer_bio) = par_bio(layer_bio) * qpar_fsw / fpar_fsw |
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| 483 | |
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| 484 | ! IF ( ln_write ) THEN |
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| 485 | ! WRITE(numout,*) ' In microE/m2/s ... ' |
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| 486 | ! WRITE(numout,*) ' par_bio : ', par_bio(layer_bio) |
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| 487 | ! ENDIF |
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| 488 | |
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| 489 | END DO |
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| 490 | |
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| 491 | ! |
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| 492 | !------------------------------------------------------------------------------! |
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| 493 | ! 6) Conservation check |
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| 494 | !------------------------------------------------------------------------------! |
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| 495 | ! |
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| 496 | sumrad = radab_s(1) |
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| 497 | DO layer = 1, nlay_i |
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| 498 | sumrad = sumrad + radab_i(layer) |
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| 499 | END DO |
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| 500 | WRITE(numout,*) ' Conservation check ' |
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| 501 | WRITE(numout,*) ' ftrice - ftroce : ', ftrice-ftroce |
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| 502 | WRITE(numout,*) ' sumrad : ', sumrad |
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| 503 | |
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| 504 | ! Final write |
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| 505 | WRITE(numout,*) |
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| 506 | WRITE(numout,*) ' i0 : ', 1.0-ab(ji) |
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| 507 | WRITE(numout,*) ' ftrice : ', ftrice |
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| 508 | WRITE(numout,*) ' ftroce : ', ftroce |
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| 509 | WRITE(numout,*) ' radtr_i : ', |
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| 510 | & ( radtr_i(layer) , layer = 0, nlay_i ) |
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| 511 | WRITE(numout,*) ' radab_phy_i : ', |
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| 512 | & ( radab_phy_i(layer) , layer = 1, nlay_i ) |
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| 513 | WRITE(numout,*) ' radab_alg_i : ', |
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| 514 | & ( radab_alg_i(layer) , layer = 1, nlay_i ) |
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| 515 | WRITE(numout,*) ' par : ', ( par(layer), layer = 1, nlay_i ) |
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| 516 | WRITE(numout,*) ' par_bio : ', ( par_bio(layer), |
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| 517 | & layer = 1, nlay_bio ) |
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| 518 | |
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| 519 | |
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| 520 | WRITE(numout,*) |
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| 521 | WRITE(numout,*) ' End of ice_rad ' |
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| 522 | WRITE(numout,*) '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~' |
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| 523 | |
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| 524 | END DO !ji |
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| 525 | |
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| 526 | !==============================================================================! |
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| 527 | ! end of the subroutine |
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| 528 | |
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| 529 | END SUBROUTINE |
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