1 | ! |
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2 | MODULE calcul_fluxs_mod |
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3 | |
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4 | |
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5 | CONTAINS |
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6 | SUBROUTINE calcul_fluxs( knon, nisurf, dtime, & |
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7 | tsurf, p1lay, cal, beta, coef1lay, ps, & |
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8 | precip_rain, precip_snow, snow, qsurf, & |
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9 | radsol, dif_grnd, t1lay, q1lay, u1lay, v1lay, & |
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10 | petAcoef, peqAcoef, petBcoef, peqBcoef, & |
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11 | tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l) |
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12 | |
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13 | USE dimphy, ONLY : klon |
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14 | |
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15 | ! Cette routine calcule les fluxs en h et q a l'interface et eventuellement |
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16 | ! une temperature de surface (au cas ou ok_veget = false) |
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17 | ! |
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18 | ! L. Fairhead 4/2000 |
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19 | ! |
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20 | ! input: |
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21 | ! knon nombre de points a traiter |
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22 | ! nisurf surface a traiter |
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23 | ! tsurf temperature de surface |
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24 | ! p1lay pression 1er niveau (milieu de couche) |
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25 | ! cal capacite calorifique du sol |
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26 | ! beta evap reelle |
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27 | ! coef1lay coefficient d'echange |
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28 | ! ps pression au sol |
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29 | ! precip_rain precipitations liquides |
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30 | ! precip_snow precipitations solides |
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31 | ! snow champs hauteur de neige |
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32 | ! runoff runoff en cas de trop plein |
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33 | ! petAcoef coeff. A de la resolution de la CL pour t |
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34 | ! peqAcoef coeff. A de la resolution de la CL pour q |
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35 | ! petBcoef coeff. B de la resolution de la CL pour t |
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36 | ! peqBcoef coeff. B de la resolution de la CL pour q |
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37 | ! radsol rayonnement net aus sol (LW + SW) |
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38 | ! dif_grnd coeff. diffusion vers le sol profond |
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39 | ! |
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40 | ! output: |
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41 | ! tsurf_new temperature au sol |
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42 | ! qsurf humidite de l'air au dessus du sol |
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43 | ! fluxsens flux de chaleur sensible |
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44 | ! fluxlat flux de chaleur latente |
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45 | ! dflux_s derivee du flux de chaleur sensible / Ts |
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46 | ! dflux_l derivee du flux de chaleur latente / Ts |
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47 | ! |
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48 | |
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49 | INCLUDE "YOETHF.h" |
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50 | INCLUDE "FCTTRE.h" |
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51 | INCLUDE "indicesol.h" |
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52 | INCLUDE "YOMCST.h" |
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53 | |
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54 | ! Parametres d'entree |
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55 | !**************************************************************************************** |
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56 | INTEGER, INTENT(IN) :: knon, nisurf |
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57 | REAL , INTENT(IN) :: dtime |
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58 | REAL, DIMENSION(klon), INTENT(IN) :: petAcoef, peqAcoef |
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59 | REAL, DIMENSION(klon), INTENT(IN) :: petBcoef, peqBcoef |
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60 | REAL, DIMENSION(klon), INTENT(IN) :: ps, q1lay |
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61 | REAL, DIMENSION(klon), INTENT(IN) :: tsurf, p1lay, cal, beta, coef1lay |
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62 | REAL, DIMENSION(klon), INTENT(IN) :: precip_rain, precip_snow ! pas utiles |
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63 | REAL, DIMENSION(klon), INTENT(IN) :: radsol, dif_grnd |
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64 | REAL, DIMENSION(klon), INTENT(IN) :: t1lay, u1lay, v1lay |
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65 | |
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66 | ! Parametres entree-sorties |
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67 | !**************************************************************************************** |
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68 | REAL, DIMENSION(klon), INTENT(INOUT) :: snow ! snow pas utile |
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69 | |
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70 | ! Parametres sorties |
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71 | !**************************************************************************************** |
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72 | REAL, DIMENSION(klon), INTENT(OUT) :: qsurf |
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73 | REAL, DIMENSION(klon), INTENT(OUT) :: tsurf_new, evap, fluxsens, fluxlat |
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74 | REAL, DIMENSION(klon), INTENT(OUT) :: dflux_s, dflux_l |
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75 | |
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76 | ! Variables locales |
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77 | !**************************************************************************************** |
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78 | INTEGER :: i |
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79 | REAL, DIMENSION(klon) :: zx_mh, zx_nh, zx_oh |
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80 | REAL, DIMENSION(klon) :: zx_mq, zx_nq, zx_oq |
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81 | REAL, DIMENSION(klon) :: zx_pkh, zx_dq_s_dt, zx_qsat, zx_coef |
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82 | REAL, DIMENSION(klon) :: zx_sl, zx_k1 |
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83 | REAL, DIMENSION(klon) :: d_ts |
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84 | REAL :: zdelta, zcvm5, zx_qs, zcor, zx_dq_s_dh |
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85 | REAL :: qsat_new, q1_new |
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86 | REAL, PARAMETER :: t_grnd = 271.35, t_coup = 273.15 |
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87 | REAL, PARAMETER :: max_eau_sol = 150.0 |
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88 | CHARACTER (len = 20) :: modname = 'calcul_fluxs' |
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89 | LOGICAL :: fonte_neige |
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90 | LOGICAL, SAVE :: check = .FALSE. |
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91 | !$OMP THREADPRIVATE(check) |
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92 | |
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93 | ! End definition |
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94 | !**************************************************************************************** |
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95 | |
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96 | IF (check) WRITE(*,*)'Entree ', modname,' surface = ',nisurf |
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97 | |
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98 | IF (check) THEN |
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99 | WRITE(*,*)' radsol (min, max)', & |
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100 | MINVAL(radsol(1:knon)), MAXVAL(radsol(1:knon)) |
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101 | ENDIF |
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102 | |
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103 | ! Traitement neige et humidite du sol |
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104 | !**************************************************************************************** |
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105 | ! |
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106 | !!$ WRITE(*,*)'test calcul_flux, surface ', nisurf |
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107 | !!PB test |
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108 | !!$ if (nisurf == is_oce) then |
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109 | !!$ snow = 0. |
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110 | !!$ qsol = max_eau_sol |
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111 | !!$ else |
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112 | !!$ where (precip_snow > 0.) snow = snow + (precip_snow * dtime) |
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113 | !!$ where (snow > epsilon(snow)) snow = max(0.0, snow - (evap * dtime)) |
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114 | !!$! snow = max(0.0, snow + (precip_snow - evap) * dtime) |
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115 | !!$ where (precip_rain > 0.) qsol = qsol + (precip_rain - evap) * dtime |
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116 | !!$ endif |
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117 | !!$ IF (nisurf /= is_ter) qsol = max_eau_sol |
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118 | |
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119 | |
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120 | ! |
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121 | ! Initialisation |
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122 | !**************************************************************************************** |
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123 | evap = 0. |
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124 | fluxsens=0. |
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125 | fluxlat=0. |
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126 | dflux_s = 0. |
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127 | dflux_l = 0. |
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128 | ! |
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129 | ! zx_qs = qsat en kg/kg |
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130 | !**************************************************************************************** |
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131 | DO i = 1, knon |
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132 | zx_pkh(i) = (ps(i)/ps(i))**RKAPPA |
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133 | IF (thermcep) THEN |
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134 | zdelta=MAX(0.,SIGN(1.,rtt-tsurf(i))) |
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135 | zcvm5 = R5LES*RLVTT*(1.-zdelta) + R5IES*RLSTT*zdelta |
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136 | zcvm5 = zcvm5 / RCPD / (1.0+RVTMP2*q1lay(i)) |
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137 | zx_qs= r2es * FOEEW(tsurf(i),zdelta)/ps(i) |
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138 | zx_qs=MIN(0.5,zx_qs) |
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139 | zcor=1./(1.-retv*zx_qs) |
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140 | zx_qs=zx_qs*zcor |
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141 | zx_dq_s_dh = FOEDE(tsurf(i),zdelta,zcvm5,zx_qs,zcor) & |
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142 | /RLVTT / zx_pkh(i) |
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143 | ELSE |
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144 | IF (tsurf(i).LT.t_coup) THEN |
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145 | zx_qs = qsats(tsurf(i)) / ps(i) |
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146 | zx_dq_s_dh = dqsats(tsurf(i),zx_qs)/RLVTT & |
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147 | / zx_pkh(i) |
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148 | ELSE |
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149 | zx_qs = qsatl(tsurf(i)) / ps(i) |
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150 | zx_dq_s_dh = dqsatl(tsurf(i),zx_qs)/RLVTT & |
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151 | / zx_pkh(i) |
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152 | ENDIF |
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153 | ENDIF |
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154 | zx_dq_s_dt(i) = RCPD * zx_pkh(i) * zx_dq_s_dh |
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155 | zx_qsat(i) = zx_qs |
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156 | zx_coef(i) = coef1lay(i) * & |
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157 | (1.0+SQRT(u1lay(i)**2+v1lay(i)**2)) * & |
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158 | p1lay(i)/(RD*t1lay(i)) |
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159 | |
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160 | ENDDO |
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161 | |
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162 | |
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163 | ! === Calcul de la temperature de surface === |
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164 | ! zx_sl = chaleur latente d'evaporation ou de sublimation |
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165 | !**************************************************************************************** |
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166 | |
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167 | DO i = 1, knon |
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168 | zx_sl(i) = RLVTT |
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169 | IF (tsurf(i) .LT. RTT) zx_sl(i) = RLSTT |
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170 | zx_k1(i) = zx_coef(i) |
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171 | ENDDO |
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172 | |
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173 | |
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174 | DO i = 1, knon |
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175 | ! Q |
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176 | zx_oq(i) = 1. - (beta(i) * zx_k1(i) * peqBcoef(i) * dtime) |
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177 | zx_mq(i) = beta(i) * zx_k1(i) * & |
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178 | (peqAcoef(i) - zx_qsat(i) + & |
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179 | zx_dq_s_dt(i) * tsurf(i)) & |
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180 | / zx_oq(i) |
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181 | zx_nq(i) = beta(i) * zx_k1(i) * (-1. * zx_dq_s_dt(i)) & |
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182 | / zx_oq(i) |
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183 | |
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184 | ! H |
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185 | zx_oh(i) = 1. - (zx_k1(i) * petBcoef(i) * dtime) |
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186 | zx_mh(i) = zx_k1(i) * petAcoef(i) / zx_oh(i) |
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187 | zx_nh(i) = - (zx_k1(i) * RCPD * zx_pkh(i))/ zx_oh(i) |
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188 | |
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189 | ! Tsurface |
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190 | tsurf_new(i) = (tsurf(i) + cal(i)/(RCPD * zx_pkh(i)) * dtime * & |
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191 | (radsol(i) + zx_mh(i) + zx_sl(i) * zx_mq(i)) & |
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192 | + dif_grnd(i) * t_grnd * dtime)/ & |
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193 | ( 1. - dtime * cal(i)/(RCPD * zx_pkh(i)) * ( & |
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194 | zx_nh(i) + zx_sl(i) * zx_nq(i)) & |
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195 | + dtime * dif_grnd(i)) |
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196 | |
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197 | ! |
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198 | ! Y'a-t-il fonte de neige? |
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199 | ! |
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200 | ! fonte_neige = (nisurf /= is_oce) .AND. & |
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201 | ! & (snow(i) > epsfra .OR. nisurf == is_sic .OR. nisurf == is_lic) & |
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202 | ! & .AND. (tsurf_new(i) >= RTT) |
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203 | ! if (fonte_neige) tsurf_new(i) = RTT |
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204 | d_ts(i) = tsurf_new(i) - tsurf(i) |
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205 | ! zx_h_ts(i) = tsurf_new(i) * RCPD * zx_pkh(i) |
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206 | ! zx_q_0(i) = zx_qsat(i) + zx_dq_s_dt(i) * d_ts(i) |
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207 | |
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208 | !== flux_q est le flux de vapeur d'eau: kg/(m**2 s) positive vers bas |
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209 | !== flux_t est le flux de cpt (energie sensible): j/(m**2 s) |
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210 | evap(i) = - zx_mq(i) - zx_nq(i) * tsurf_new(i) |
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211 | fluxlat(i) = - evap(i) * zx_sl(i) |
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212 | fluxsens(i) = zx_mh(i) + zx_nh(i) * tsurf_new(i) |
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213 | |
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214 | ! Derives des flux dF/dTs (W m-2 K-1): |
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215 | dflux_s(i) = zx_nh(i) |
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216 | dflux_l(i) = (zx_sl(i) * zx_nq(i)) |
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217 | |
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218 | ! Nouvelle valeure de l'humidite au dessus du sol |
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219 | qsat_new=zx_qsat(i) + zx_dq_s_dt(i) * d_ts(i) |
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220 | q1_new = peqAcoef(i) - peqBcoef(i)*evap(i)*dtime |
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221 | qsurf(i)=q1_new*(1.-beta(i)) + beta(i)*qsat_new |
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222 | ! |
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223 | ! en cas de fonte de neige |
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224 | ! |
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225 | ! if (fonte_neige) then |
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226 | ! bilan_f = radsol(i) + fluxsens(i) - (zx_sl(i) * evap (i)) - & |
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227 | ! & dif_grnd(i) * (tsurf_new(i) - t_grnd) - & |
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228 | ! & RCPD * (zx_pkh(i))/cal(i)/dtime * (tsurf_new(i) - tsurf(i)) |
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229 | ! bilan_f = max(0., bilan_f) |
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230 | ! fq_fonte = bilan_f / zx_sl(i) |
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231 | ! snow(i) = max(0., snow(i) - fq_fonte * dtime) |
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232 | ! qsol(i) = qsol(i) + (fq_fonte * dtime) |
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233 | ! endif |
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234 | !!$ if (nisurf == is_ter) & |
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235 | !!$ & run_off(i) = run_off(i) + max(qsol(i) - max_eau_sol, 0.0) |
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236 | !!$ qsol(i) = min(qsol(i), max_eau_sol) |
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237 | ENDDO |
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238 | ! |
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239 | !**************************************************************************************** |
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240 | ! |
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241 | END SUBROUTINE calcul_fluxs |
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242 | ! |
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243 | !**************************************************************************************** |
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244 | ! |
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245 | SUBROUTINE calcul_flux_wind(knon, dtime, & |
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246 | u0, v0, u1, v1, cdrag_m, & |
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247 | AcoefU, AcoefV, BcoefU, BcoefV, & |
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248 | p1lay, t1lay, & |
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249 | flux_u1, flux_v1) |
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250 | |
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251 | USE dimphy |
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252 | INCLUDE "YOMCST.h" |
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253 | |
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254 | ! Input arguments |
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255 | !**************************************************************************************** |
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256 | INTEGER, INTENT(IN) :: knon |
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257 | REAL, INTENT(IN) :: dtime |
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258 | REAL, DIMENSION(klon), INTENT(IN) :: u0, v0 ! u and v at niveau 0 |
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259 | REAL, DIMENSION(klon), INTENT(IN) :: u1, v1 ! u and v at niveau 1 |
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260 | REAL, DIMENSION(klon), INTENT(IN) :: cdrag_m ! cdrag pour momentum |
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261 | REAL, DIMENSION(klon), INTENT(IN) :: AcoefU, AcoefV, BcoefU, BcoefV |
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262 | REAL, DIMENSION(klon), INTENT(IN) :: p1lay ! pression 1er niveau (milieu de couche) |
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263 | REAL, DIMENSION(klon), INTENT(IN) :: t1lay ! temperature |
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264 | ! Output arguments |
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265 | !**************************************************************************************** |
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266 | REAL, DIMENSION(klon), INTENT(OUT) :: flux_u1 |
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267 | REAL, DIMENSION(klon), INTENT(OUT) :: flux_v1 |
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268 | |
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269 | ! Local variables |
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270 | !**************************************************************************************** |
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271 | INTEGER :: i |
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272 | REAL :: mod_wind, buf |
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273 | |
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274 | !**************************************************************************************** |
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275 | ! Calculate the surface flux |
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276 | ! |
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277 | !**************************************************************************************** |
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278 | DO i=1,knon |
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279 | mod_wind = 1.0 + SQRT((u1(i) - u0(i))**2 + (v1(i)-v0(i))**2) |
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280 | buf = cdrag_m(i) * mod_wind * p1lay(i)/(RD*t1lay(i)) |
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281 | flux_u1(i) = (AcoefU(i) - u0(i)) / (1/buf - BcoefU(i)*dtime ) |
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282 | flux_v1(i) = (AcoefV(i) - v0(i)) / (1/buf - BcoefV(i)*dtime ) |
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283 | END DO |
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284 | |
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285 | END SUBROUTINE calcul_flux_wind |
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286 | ! |
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287 | !**************************************************************************************** |
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288 | ! |
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289 | END MODULE calcul_fluxs_mod |
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