1 | ! |
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2 | MODULE cdrag_mod |
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3 | ! |
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4 | ! This module contains some procedures for calculation of the cdrag |
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5 | ! coefficients for turbulent diffusion at surface |
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6 | ! |
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7 | IMPLICIT NONE |
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8 | |
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9 | CONTAINS |
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10 | ! |
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11 | !**************************************************************************************** |
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12 | ! |
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13 | !r original routine svn3623 |
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14 | ! |
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15 | SUBROUTINE cdrag(knon, nsrf, & |
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16 | speed, t1, q1, zgeop1, & |
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17 | psol, tsurf, qsurf, z0m, z0h, & |
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18 | cdm, cdh, zri, pref) |
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19 | |
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20 | USE dimphy |
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21 | USE indice_sol_mod |
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22 | USE print_control_mod, ONLY: lunout, prt_level |
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23 | USE ioipsl_getin_p_mod, ONLY : getin_p |
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24 | |
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25 | IMPLICIT NONE |
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26 | ! ================================================================= c |
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27 | ! |
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28 | ! Objet : calcul des cdrags pour le moment (pcfm) et |
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29 | ! les flux de chaleur sensible et latente (pcfh) d'apr??s |
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30 | ! Louis 1982, Louis 1979, King et al 2001 |
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31 | ! ou Zilitinkevich et al 2002 pour les cas stables, Louis 1979 |
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32 | ! et 1982 pour les cas instables |
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33 | ! |
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34 | ! Modified history: |
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35 | ! writting on the 20/05/2016 |
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36 | ! modified on the 13/12/2016 to be adapted to LMDZ6 |
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37 | ! |
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38 | ! References: |
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39 | ! Louis, J. F., 1979: A parametric model of vertical eddy fluxes in the |
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40 | ! atmosphere. Boundary-Layer Meteorology. 01/1979; 17(2):187-202. |
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41 | ! Louis, J. F., Tiedtke, M. and Geleyn, J. F., 1982: `A short history of the |
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42 | ! operational PBL parametrization at ECMWF'. Workshop on boundary layer |
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43 | ! parametrization, November 1981, ECMWF, Reading, England. |
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44 | ! Page: 19. Equations in Table 1. |
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45 | ! Mascart P, Noilhan J, Giordani H 1995.A MODIFIED PARAMETERIZATION OF FLUX-PROFILE RELATIONSHIPS |
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46 | ! IN THE SURFACE LAYER USING DIFFERENT ROUGHNESS LENGTH VALUES FOR HEAT AND MOMENTUM |
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47 | ! Boundary-Layer Meteorology 72: 331-344 |
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48 | ! Anton Beljaars. May 1992. The parametrization of the planetary boundary layer. |
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49 | ! European Centre for Medium-Range Weather Forecasts. |
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50 | ! Equations: 110-113. Page 40. |
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51 | ! Miller,M.J., A.C.M.Beljaars, T.N.Palmer. 1992. The sensitivity of the ECMWF |
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52 | ! model to the parameterization of evaporation from the tropical oceans. J. |
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53 | ! Climate, 5:418-434. |
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54 | ! King J.C, Connolley, W.M ad Derbyshire S.H. 2001, Sensitivity of Modelled Antarctic climate |
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55 | ! to surface and boundary-layer flux parametrizations |
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56 | ! QJRMS, 127, pp 779-794 |
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57 | ! |
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58 | ! ================================================================= c |
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59 | ! ================================================================= c |
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60 | ! On choisit le couple de fonctions de correction avec deux flags: |
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61 | ! Un pour les cas instables, un autre pour les cas stables |
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62 | ! |
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63 | ! iflag_corr_insta: |
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64 | ! 1: Louis 1979 avec les modifications de Mascart 1995 (z0/= z0h) |
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65 | ! 2: Louis 1982 |
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66 | ! 3: Laurent Li |
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67 | ! |
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68 | ! iflag_corr_sta: |
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69 | ! 1: Louis 1979 avec les modifications de Mascart 1995 (z0/= z0h) |
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70 | ! 2: Louis 1982 |
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71 | ! 3: Laurent Li |
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72 | ! 4: King 2001 (SHARP) |
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73 | ! 5: MO 1st order theory (allow collapse of turbulence) |
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74 | ! |
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75 | ! |
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76 | !***************************************************************** |
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77 | ! Parametres d'entree |
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78 | !***************************************************************** |
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79 | |
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80 | INTEGER, INTENT(IN) :: knon, nsrf ! nombre de points de grille sur l'horizontal + type de surface |
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81 | REAL, DIMENSION(klon), INTENT(IN) :: speed ! module du vent au 1er niveau du modele |
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82 | REAL, DIMENSION(klon), INTENT(IN) :: zgeop1! geopotentiel au 1er niveau du modele |
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83 | REAL, DIMENSION(klon), INTENT(IN) :: tsurf ! Surface temperature (K) |
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84 | REAL, DIMENSION(klon), INTENT(IN) :: qsurf ! Surface humidity (Kg/Kg) |
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85 | REAL, DIMENSION(klon), INTENT(IN) :: z0m, z0h ! Rugosity at surface (m) |
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86 | REAL, DIMENSION(klon), INTENT(IN) :: t1 ! Temperature au premier niveau (K) |
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87 | REAL, DIMENSION(klon), INTENT(IN) :: q1 ! humidite specifique au premier niveau (kg/kg) |
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88 | REAL, DIMENSION(klon), INTENT(IN) :: psol ! pression au sol |
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89 | |
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90 | |
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91 | |
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92 | ! Parametres de sortie |
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93 | !****************************************************************** |
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94 | REAL, DIMENSION(klon), INTENT(OUT) :: cdm ! Drag coefficient for momentum |
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95 | REAL, DIMENSION(klon), INTENT(OUT) :: cdh ! Drag coefficient for heat flux |
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96 | REAL, DIMENSION(klon), INTENT(OUT) :: zri ! Richardson number |
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97 | REAL, DIMENSION(klon), INTENT(OUT) :: pref ! Pression au niveau zgeop/RG |
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98 | |
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99 | ! Variables Locales |
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100 | !****************************************************************** |
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101 | |
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102 | |
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103 | INCLUDE "YOMCST.h" |
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104 | INCLUDE "YOETHF.h" |
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105 | INCLUDE "clesphys.h" |
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106 | |
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107 | |
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108 | REAL, PARAMETER :: CKAP=0.40, CKAPT=0.42 |
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109 | REAL CEPDU2 |
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110 | REAL ALPHA |
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111 | REAL CB,CC,CD,C2,C3 |
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112 | REAL MU, CM, CH, B, CMstar, CHstar |
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113 | REAL PM, PH, BPRIME |
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114 | REAL C |
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115 | INTEGER ng_q1 ! Number of grids that q1 < 0.0 |
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116 | INTEGER ng_qsurf ! Number of grids that qsurf < 0.0 |
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117 | INTEGER i |
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118 | REAL zdu2, ztsolv |
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119 | REAL ztvd, zscf |
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120 | REAL zucf, zcr |
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121 | REAL friv, frih |
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122 | REAL, DIMENSION(klon) :: FM, FH ! stability functions |
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123 | REAL, DIMENSION(klon) :: cdmn, cdhn ! Drag coefficient in neutral conditions |
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124 | REAL zzzcd |
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125 | |
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126 | LOGICAL, SAVE :: firstcall = .TRUE. |
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127 | !$OMP THREADPRIVATE(firstcall) |
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128 | INTEGER, SAVE :: iflag_corr_sta |
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129 | !$OMP THREADPRIVATE(iflag_corr_sta) |
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130 | INTEGER, SAVE :: iflag_corr_insta |
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131 | !$OMP THREADPRIVATE(iflag_corr_insta) |
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132 | |
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133 | !===================================================================c |
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134 | ! Valeurs numeriques des constantes |
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135 | !===================================================================c |
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136 | |
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137 | |
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138 | ! Minimum du carre du vent |
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139 | |
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140 | CEPDU2 = (0.1)**2 |
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141 | |
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142 | ! Louis 1982 |
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143 | |
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144 | CB=5.0 |
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145 | CC=5.0 |
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146 | CD=5.0 |
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147 | |
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148 | |
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149 | ! King 2001 |
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150 | |
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151 | C2=0.25 |
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152 | C3=0.0625 |
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153 | |
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154 | |
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155 | ! Louis 1979 |
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156 | |
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157 | BPRIME=4.7 |
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158 | B=9.4 |
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159 | |
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160 | |
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161 | !MO |
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162 | |
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163 | ALPHA=5.0 |
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164 | |
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165 | |
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166 | ! ================================================================= c |
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167 | ! Tests avant de commencer |
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168 | ! Fuxing WANG, 04/03/2015 |
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169 | ! To check if there are negative q1, qsurf values. |
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170 | !====================================================================c |
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171 | ng_q1 = 0 ! Initialization |
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172 | ng_qsurf = 0 ! Initialization |
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173 | DO i = 1, knon |
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174 | IF (q1(i).LT.0.0) ng_q1 = ng_q1 + 1 |
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175 | IF (qsurf(i).LT.0.0) ng_qsurf = ng_qsurf + 1 |
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176 | ENDDO |
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177 | IF (ng_q1.GT.0 .and. prt_level > 5) THEN |
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178 | WRITE(lunout,*)" *** Warning: Negative q1(humidity at 1st level) values in cdrag.F90 !" |
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179 | WRITE(lunout,*)" The total number of the grids is: ", ng_q1 |
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180 | WRITE(lunout,*)" The negative q1 is set to zero " |
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181 | ! abort_message="voir ci-dessus" |
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182 | ! CALL abort_physic(modname,abort_message,1) |
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183 | ENDIF |
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184 | IF (ng_qsurf.GT.0 .and. prt_level > 5) THEN |
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185 | WRITE(lunout,*)" *** Warning: Negative qsurf(humidity at surface) values in cdrag.F90 !" |
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186 | WRITE(lunout,*)" The total number of the grids is: ", ng_qsurf |
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187 | WRITE(lunout,*)" The negative qsurf is set to zero " |
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188 | ! abort_message="voir ci-dessus" |
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189 | ! CALL abort_physic(modname,abort_message,1) |
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190 | ENDIF |
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191 | |
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192 | |
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193 | |
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194 | !=============================================================================c |
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195 | ! Calcul du cdrag |
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196 | !=============================================================================c |
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197 | |
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198 | ! On choisit les fonctions de stabilite utilisees au premier appel |
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199 | !************************************************************************** |
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200 | IF (firstcall) THEN |
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201 | iflag_corr_sta=2 |
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202 | iflag_corr_insta=2 |
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203 | |
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204 | CALL getin_p('iflag_corr_sta',iflag_corr_sta) |
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205 | CALL getin_p('iflag_corr_insta',iflag_corr_insta) |
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206 | |
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207 | firstcall = .FALSE. |
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208 | ENDIF |
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209 | |
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210 | !xxxxxxxxxxxxxxxxxxxxxxx |
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211 | DO i = 1, knon ! Boucle sur l'horizontal |
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212 | !xxxxxxxxxxxxxxxxxxxxxxx |
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213 | |
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214 | |
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215 | ! calculs preliminaires: |
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216 | !*********************** |
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217 | |
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218 | |
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219 | zdu2 = MAX(CEPDU2, speed(i)**2) |
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220 | pref(i) = EXP(LOG(psol(i)) - zgeop1(i)/(RD*t1(i)* & |
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221 | (1.+ RETV * max(q1(i),0.0)))) ! negative q1 set to zero |
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222 | ztsolv = tsurf(i) * (1.0+RETV*max(qsurf(i),0.0)) ! negative qsurf set to zero |
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223 | ztvd = (t1(i)+zgeop1(i)/RCPD/(1.+RVTMP2*max(q1(i),0.0))) & |
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224 | *(1.+RETV*max(q1(i),0.0)) ! negative q1 set to zero |
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225 | zri(i) = zgeop1(i)*(ztvd-ztsolv)/(zdu2*ztvd) |
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226 | |
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227 | |
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228 | ! Coefficients CD neutres : k^2/ln(z/z0) et k^2/(ln(z/z0)*ln(z/z0h)): |
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229 | !******************************************************************** |
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230 | |
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231 | zzzcd=CKAP/LOG(1.+zgeop1(i)/(RG*z0m(i))) |
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232 | cdmn(i) = zzzcd*zzzcd |
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233 | cdhn(i) = zzzcd*(CKAP/LOG(1.+zgeop1(i)/(RG*z0h(i)))) |
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234 | |
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235 | |
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236 | ! Calcul des fonctions de stabilit?? FMs, FHs, FMi, FHi : |
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237 | !******************************************************* |
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238 | |
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239 | !'''''''''''''' |
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240 | ! Cas instables |
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241 | !'''''''''''''' |
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242 | |
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243 | IF (zri(i) .LT. 0.) THEN |
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244 | |
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245 | |
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246 | SELECT CASE (iflag_corr_insta) |
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247 | |
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248 | CASE (1) ! Louis 1979 + Mascart 1995 |
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249 | |
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250 | MU=LOG(MAX(z0m(i)/z0h(i),0.01)) |
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251 | CMstar=6.8741+2.6933*MU-0.3601*(MU**2)+0.0154*(MU**3) |
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252 | PM=0.5233-0.0815*MU+0.0135*(MU**2)-0.001*(MU**3) |
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253 | CHstar=3.2165+4.3431*MU+0.536*(MU**2)-0.0781*(MU**3) |
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254 | PH=0.5802-0.1571*MU+0.0327*(MU**2)-0.0026*(MU**3) |
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255 | CH=CHstar*B*CKAP/LOG(z0m(i)+zgeop1(i)/(RG*z0m(i))) & |
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256 | & * CKAPT/LOG(z0h(i)+zgeop1(i)/(RG*z0h(i))) & |
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257 | & * ((zgeop1(i)/(RG*z0h(i)))**PH) |
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258 | CM=CMstar*B*CKAP/LOG(z0m(i)+zgeop1(i)/(RG*z0m(i))) & |
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259 | & *CKAP/LOG(z0m(i)+zgeop1(i)/(RG*z0m(i))) & |
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260 | & * ((zgeop1(i)/(RG*z0m(i)))**PM) |
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261 | |
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262 | |
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263 | |
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264 | |
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265 | FM(i)=1.-B*zri(i)/(1.+CM*SQRT(ABS(zri(i)))) |
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266 | FH(i)=1.-B*zri(i)/(1.+CH*SQRT(ABS(zri(i)))) |
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267 | |
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268 | CASE (2) ! Louis 1982 |
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269 | |
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270 | zucf = 1./(1.+3.0*CB*CC*cdmn(i)*SQRT(ABS(zri(i)) & |
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271 | *(1.0+zgeop1(i)/(RG*z0m(i))))) |
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272 | FM(i) = AMAX1((1.-2.0*CB*zri(i)*zucf),f_ri_cd_min) |
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273 | FH(i) = AMAX1((1.-3.0*CB*zri(i)*zucf),f_ri_cd_min) |
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274 | |
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275 | |
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276 | CASE (3) ! Laurent Li |
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277 | |
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278 | |
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279 | FM(i) = MAX(SQRT(1.0-18.0*zri(i)),f_ri_cd_min) |
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280 | FH(i) = MAX(SQRT(1.0-18.0*zri(i)),f_ri_cd_min) |
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281 | |
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282 | |
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283 | |
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284 | CASE default ! Louis 1982 |
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285 | |
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286 | zucf = 1./(1.+3.0*CB*CC*cdmn(i)*SQRT(ABS(zri(i)) & |
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287 | *(1.0+zgeop1(i)/(RG*z0m(i))))) |
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288 | FM(i) = AMAX1((1.-2.0*CB*zri(i)*zucf),f_ri_cd_min) |
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289 | FH(i) = AMAX1((1.-3.0*CB*zri(i)*zucf),f_ri_cd_min) |
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290 | |
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291 | |
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292 | END SELECT |
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293 | |
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294 | |
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295 | |
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296 | ! Calcul des drags |
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297 | |
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298 | |
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299 | cdm(i)=cdmn(i)*FM(i) |
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300 | cdh(i)=f_cdrag_ter*cdhn(i)*FH(i) |
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301 | |
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302 | |
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303 | ! Traitement particulier des cas oceaniques |
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304 | ! on applique Miller et al 1992 en l'absence de gustiness |
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305 | |
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306 | IF (nsrf == is_oce) THEN |
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307 | ! cdh(i)=f_cdrag_oce*cdhn(i)*FH(i) |
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308 | |
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309 | IF(iflag_gusts==0) THEN |
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310 | zcr = (0.0016/(cdmn(i)*SQRT(zdu2)))*ABS(ztvd-ztsolv)**(1./3.) |
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311 | cdh(i) =f_cdrag_oce* cdhn(i)*(1.0+zcr**1.25)**(1./1.25) |
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312 | ENDIF |
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313 | |
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314 | |
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315 | cdm(i)=MIN(cdm(i),cdmmax) |
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316 | cdh(i)=MIN(cdh(i),cdhmax) |
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317 | |
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318 | END IF |
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319 | |
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320 | |
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321 | |
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322 | ELSE |
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323 | |
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324 | !''''''''''''''' |
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325 | ! Cas stables : |
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326 | !''''''''''''''' |
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327 | zri(i) = MIN(20.,zri(i)) |
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328 | |
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329 | SELECT CASE (iflag_corr_sta) |
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330 | |
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331 | CASE (1) ! Louis 1979 + Mascart 1995 |
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332 | |
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333 | FM(i)=MAX(1./((1+BPRIME*zri(i))**2),f_ri_cd_min) |
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334 | FH(i)=FM(i) |
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335 | |
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336 | |
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337 | CASE (2) ! Louis 1982 |
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338 | |
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339 | zscf = SQRT(1.+CD*ABS(zri(i))) |
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340 | FM(i)= AMAX1(1. / (1.+2.*CB*zri(i)/zscf), f_ri_cd_min) |
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341 | FH(i)= AMAX1(1./ (1.+3.*CB*zri(i)*zscf), f_ri_cd_min ) |
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342 | |
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343 | |
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344 | CASE (3) ! Laurent Li |
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345 | |
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346 | FM(i)=MAX(1.0 / (1.0+10.0*zri(i)*(1+8.0*zri(i))),f_ri_cd_min) |
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347 | FH(i)=FM(i) |
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348 | |
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349 | |
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350 | CASE (4) ! King 2001 |
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351 | |
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352 | if (zri(i) .LT. C2/2.) then |
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353 | FM(i)=MAX((1.-zri(i)/C2)**2,f_ri_cd_min) |
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354 | FH(i)= FM(i) |
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355 | |
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356 | |
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357 | else |
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358 | FM(i)=MAX(C3*((C2/zri(i))**2),f_ri_cd_min) |
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359 | FH(i)= FM(i) |
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360 | endif |
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361 | |
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362 | |
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363 | CASE (5) ! MO |
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364 | |
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365 | if (zri(i) .LT. 1./alpha) then |
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366 | |
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367 | FM(i)=MAX((1.-alpha*zri(i))**2,f_ri_cd_min) |
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368 | FH(i)=FM(i) |
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369 | |
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370 | else |
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371 | |
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372 | |
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373 | FM(i)=MAX(1E-7,f_ri_cd_min) |
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374 | FH(i)=FM(i) |
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375 | |
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376 | endif |
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377 | |
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378 | |
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379 | |
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380 | |
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381 | |
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382 | CASE default ! Louis 1982 |
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383 | |
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384 | zscf = SQRT(1.+CD*ABS(zri(i))) |
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385 | FM(i)= AMAX1(1. / (1.+2.*CB*zri(i)/zscf), f_ri_cd_min) |
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386 | FH(i)= AMAX1(1./ (1.+3.*CB*zri(i)*zscf), f_ri_cd_min ) |
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387 | |
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388 | |
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389 | |
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390 | END SELECT |
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391 | |
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392 | ! Calcul des drags |
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393 | |
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394 | |
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395 | cdm(i)=cdmn(i)*FM(i) |
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396 | cdh(i)=f_cdrag_ter*cdhn(i)*FH(i) |
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397 | |
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398 | IF(nsrf.EQ.is_oce) THEN |
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399 | |
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400 | cdh(i)=f_cdrag_oce*cdhn(i)*FH(i) |
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401 | cdm(i)=MIN(cdm(i),cdmmax) |
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402 | cdh(i)=MIN(cdh(i),cdhmax) |
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403 | |
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404 | ENDIF |
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405 | |
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406 | |
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407 | ENDIF |
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408 | |
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409 | !xxxxxxxxxxx |
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410 | END DO ! Fin de la boucle sur l'horizontal |
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411 | !xxxxxxxxxxx |
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412 | ! ================================================================= c |
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413 | |
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414 | END SUBROUTINE cdrag |
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415 | |
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416 | ! |
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417 | SUBROUTINE cdragn_ri1(knon, nsrf, & |
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418 | speed, t1, q1, zgeop1, & |
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419 | psol, tsurf, qsurf, z0m, z0h, & |
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420 | ri1, iri1, & |
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421 | cdm, cdh, zri, pref) |
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422 | |
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423 | USE dimphy |
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424 | USE indice_sol_mod |
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425 | USE print_control_mod, ONLY: lunout, prt_level |
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426 | USE ioipsl_getin_p_mod, ONLY : getin_p |
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427 | |
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428 | IMPLICIT NONE |
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429 | ! ================================================================= c |
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430 | ! |
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431 | ! Objet : calcul des cdrags pour le moment (pcfm) et |
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432 | ! les flux de chaleur sensible et latente (pcfh) d'apr??s |
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433 | ! Louis 1982, Louis 1979, King et al 2001 |
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434 | ! ou Zilitinkevich et al 2002 pour les cas stables, Louis 1979 |
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435 | ! et 1982 pour les cas instables |
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436 | ! |
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437 | ! Modified history: |
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438 | ! writting on the 20/05/2016 |
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439 | ! modified on the 13/12/2016 to be adapted to LMDZ6 |
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440 | ! |
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441 | ! References: |
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442 | ! Louis, J. F., 1979: A parametric model of vertical eddy fluxes in the |
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443 | ! atmosphere. Boundary-Layer Meteorology. 01/1979; 17(2):187-202. |
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444 | ! Louis, J. F., Tiedtke, M. and Geleyn, J. F., 1982: `A short history of the |
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445 | ! operational PBL parametrization at ECMWF'. Workshop on boundary layer |
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446 | ! parametrization, November 1981, ECMWF, Reading, England. |
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447 | ! Page: 19. Equations in Table 1. |
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448 | ! Mascart P, Noilhan J, Giordani H 1995.A MODIFIED PARAMETERIZATION OF FLUX-PROFILE RELATIONSHIPS |
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449 | ! IN THE SURFACE LAYER USING DIFFERENT ROUGHNESS LENGTH VALUES FOR HEAT AND MOMENTUM |
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450 | ! Boundary-Layer Meteorology 72: 331-344 |
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451 | ! Anton Beljaars. May 1992. The parametrization of the planetary boundary layer. |
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452 | ! European Centre for Medium-Range Weather Forecasts. |
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453 | ! Equations: 110-113. Page 40. |
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454 | ! Miller,M.J., A.C.M.Beljaars, T.N.Palmer. 1992. The sensitivity of the ECMWF |
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455 | ! model to the parameterization of evaporation from the tropical oceans. J. |
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456 | ! Climate, 5:418-434. |
---|
457 | ! King J.C, Connolley, W.M ad Derbyshire S.H. 2001, Sensitivity of Modelled Antarctic climate |
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458 | ! to surface and boundary-layer flux parametrizations |
---|
459 | ! QJRMS, 127, pp 779-794 |
---|
460 | ! |
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461 | ! ================================================================= c |
---|
462 | ! ================================================================= c |
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463 | ! On choisit le couple de fonctions de correction avec deux flags: |
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464 | ! Un pour les cas instables, un autre pour les cas stables |
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465 | ! |
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466 | ! iflag_corr_insta: |
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467 | ! 1: Louis 1979 avec les modifications de Mascart 1995 (z0/= z0h) |
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468 | ! 2: Louis 1982 |
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469 | ! 3: Laurent Li |
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470 | ! |
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471 | ! iflag_corr_sta: |
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472 | ! 1: Louis 1979 avec les modifications de Mascart 1995 (z0/= z0h) |
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473 | ! 2: Louis 1982 |
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474 | ! 3: Laurent Li |
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475 | ! 4: King 2001 (SHARP) |
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476 | ! 5: MO 1st order theory (allow collapse of turbulence) |
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477 | ! |
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478 | ! |
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479 | !***************************************************************** |
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480 | ! Parametres d'entree |
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481 | !***************************************************************** |
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482 | |
---|
483 | INTEGER, INTENT(IN) :: knon, nsrf ! nombre de points de grille sur l'horizontal + type de surface |
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484 | REAL, DIMENSION(klon), INTENT(IN) :: speed ! module du vent au 1er niveau du modele |
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485 | REAL, DIMENSION(klon), INTENT(IN) :: zgeop1! geopotentiel au 1er niveau du modele |
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486 | REAL, DIMENSION(klon), INTENT(IN) :: tsurf ! Surface temperature (K) |
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487 | REAL, DIMENSION(klon), INTENT(IN) :: qsurf ! Surface humidity (Kg/Kg) |
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488 | REAL, DIMENSION(klon), INTENT(IN) :: z0m, z0h ! Rugosity at surface (m) |
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489 | REAL, DIMENSION(klon), INTENT(IN) :: ri1 ! Richardson 1ere couche |
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490 | INTEGER, INTENT(IN) :: iri1 ! |
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491 | REAL, DIMENSION(klon), INTENT(IN) :: t1 ! Temperature au premier niveau (K) |
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492 | REAL, DIMENSION(klon), INTENT(IN) :: q1 ! humidite specifique au premier niveau (kg/kg) |
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493 | REAL, DIMENSION(klon), INTENT(IN) :: psol ! pression au sol |
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494 | |
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495 | |
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496 | |
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497 | ! Parametres de sortie |
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498 | !****************************************************************** |
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499 | REAL, DIMENSION(klon), INTENT(OUT) :: cdm ! Drag coefficient for heat flux |
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500 | REAL, DIMENSION(klon), INTENT(OUT) :: cdh ! Drag coefficient for momentum |
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501 | REAL, DIMENSION(klon), INTENT(OUT) :: zri ! Richardson number |
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502 | REAL, DIMENSION(klon), INTENT(OUT) :: pref ! Pression au niveau zgeop/RG |
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503 | ! Variables Locales |
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504 | !****************************************************************** |
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505 | |
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506 | |
---|
507 | INCLUDE "YOMCST.h" |
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508 | INCLUDE "YOETHF.h" |
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509 | INCLUDE "clesphys.h" |
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510 | |
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511 | |
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512 | REAL, PARAMETER :: CKAP=0.40, CKAPT=0.42 |
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513 | REAL CEPDU2 |
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514 | REAL ALPHA |
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515 | REAL CB,CC,CD,C2,C3 |
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516 | REAL MU, CM, CH, B, CMstar, CHstar |
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517 | REAL PM, PH, BPRIME |
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518 | REAL C |
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519 | INTEGER ng_q1 ! Number of grids that q1 < 0.0 |
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520 | INTEGER ng_qsurf ! Number of grids that qsurf < 0.0 |
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521 | INTEGER i |
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522 | REAL zdu2, ztsolv |
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523 | REAL ztvd, zscf |
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524 | REAL zucf, zcr |
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525 | REAL friv, frih |
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526 | REAL, DIMENSION(klon) :: FM, FH ! stability functions |
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527 | REAL, DIMENSION(klon) :: cdmn, cdhn ! Drag coefficient in neutral conditions |
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528 | REAL zzzcd |
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529 | |
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530 | LOGICAL, SAVE :: firstcall = .TRUE. |
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531 | !$OMP THREADPRIVATE(firstcall) |
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532 | INTEGER, SAVE :: iflag_corr_sta |
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533 | !$OMP THREADPRIVATE(iflag_corr_sta) |
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534 | INTEGER, SAVE :: iflag_corr_insta |
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535 | !$OMP THREADPRIVATE(iflag_corr_insta) |
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536 | |
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537 | !===================================================================c |
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538 | ! Valeurs numeriques des constantes |
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539 | !===================================================================c |
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540 | |
---|
541 | |
---|
542 | ! Minimum du carre du vent |
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543 | |
---|
544 | CEPDU2 = (0.1)**2 |
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545 | ! Louis 1982 |
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546 | |
---|
547 | CB=5.0 |
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548 | CC=5.0 |
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549 | CD=5.0 |
---|
550 | |
---|
551 | |
---|
552 | ! King 2001 |
---|
553 | |
---|
554 | C2=0.25 |
---|
555 | C3=0.0625 |
---|
556 | |
---|
557 | |
---|
558 | ! Louis 1979 |
---|
559 | |
---|
560 | BPRIME=4.7 |
---|
561 | B=9.4 |
---|
562 | |
---|
563 | |
---|
564 | !MO |
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565 | |
---|
566 | ALPHA=5.0 |
---|
567 | |
---|
568 | |
---|
569 | ! ================================================================= c |
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570 | ! Tests avant de commencer |
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571 | ! Fuxing WANG, 04/03/2015 |
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572 | ! To check if there are negative q1, qsurf values. |
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573 | !====================================================================c |
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574 | ng_q1 = 0 ! Initialization |
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575 | ng_qsurf = 0 ! Initialization |
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576 | DO i = 1, knon |
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577 | IF (q1(i).LT.0.0) ng_q1 = ng_q1 + 1 |
---|
578 | IF (qsurf(i).LT.0.0) ng_qsurf = ng_qsurf + 1 |
---|
579 | ENDDO |
---|
580 | IF (ng_q1.GT.0 .and. prt_level > 5) THEN |
---|
581 | WRITE(lunout,*)" *** Warning: Negative q1(humidity at 1st level) values in cdrag.F90 !" |
---|
582 | WRITE(lunout,*)" The total number of the grids is: ", ng_q1 |
---|
583 | WRITE(lunout,*)" The negative q1 is set to zero " |
---|
584 | ! abort_message="voir ci-dessus" |
---|
585 | ! CALL abort_physic(modname,abort_message,1) |
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586 | ENDIF |
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587 | IF (ng_qsurf.GT.0 .and. prt_level > 5) THEN |
---|
588 | WRITE(lunout,*)" *** Warning: Negative qsurf(humidity at surface) values in cdrag.F90 !" |
---|
589 | WRITE(lunout,*)" The total number of the grids is: ", ng_qsurf |
---|
590 | WRITE(lunout,*)" The negative qsurf is set to zero " |
---|
591 | ! abort_message="voir ci-dessus" |
---|
592 | ! CALL abort_physic(modname,abort_message,1) |
---|
593 | ENDIF |
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594 | |
---|
595 | |
---|
596 | |
---|
597 | !=============================================================================c |
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598 | ! Calcul du cdrag |
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599 | !=============================================================================c |
---|
600 | |
---|
601 | ! On choisit les fonctions de stabilite utilisees au premier appel |
---|
602 | !************************************************************************** |
---|
603 | IF (firstcall) THEN |
---|
604 | iflag_corr_sta=2 |
---|
605 | iflag_corr_insta=2 |
---|
606 | |
---|
607 | CALL getin_p('iflag_corr_sta',iflag_corr_sta) |
---|
608 | CALL getin_p('iflag_corr_insta',iflag_corr_insta) |
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609 | |
---|
610 | firstcall = .FALSE. |
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611 | ENDIF |
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612 | |
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613 | !xxxxxxxxxxxxxxxxxxxxxxx |
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614 | DO i = 1, knon ! Boucle sur l'horizontal |
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615 | !xxxxxxxxxxxxxxxxxxxxxxx |
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616 | |
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617 | |
---|
618 | ! calculs preliminaires: |
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619 | !*********************** |
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620 | |
---|
621 | |
---|
622 | zdu2 = MAX(CEPDU2, speed(i)**2) |
---|
623 | pref(i) = EXP(LOG(psol(i)) - zgeop1(i)/(RD*t1(i)* & |
---|
624 | (1.+ RETV * max(q1(i),0.0)))) ! negative q1 set to zero |
---|
625 | ztsolv = tsurf(i) * (1.0+RETV*max(qsurf(i),0.0)) ! negative qsurf set to zero |
---|
626 | ztvd = (t1(i)+zgeop1(i)/RCPD/(1.+RVTMP2*max(q1(i),0.0))) & |
---|
627 | *(1.+RETV*max(q1(i),0.0)) ! negative q1 set to zero |
---|
628 | zri(i) = zgeop1(i)*(ztvd-ztsolv)/(zdu2*ztvd) |
---|
629 | |
---|
630 | IF (iri1.EQ.1) THEN |
---|
631 | zri(i) = ri1(i) |
---|
632 | ENDIF |
---|
633 | |
---|
634 | ! Coefficients CD neutres : k^2/ln(z/z0) et k^2/(ln(z/z0)*ln(z/z0h)): |
---|
635 | !******************************************************************** |
---|
636 | |
---|
637 | zzzcd=CKAP/LOG(1.+zgeop1(i)/(RG*z0m(i))) |
---|
638 | cdmn(i) = zzzcd*zzzcd |
---|
639 | cdhn(i) = zzzcd*(CKAP/LOG(1.+zgeop1(i)/(RG*z0h(i)))) |
---|
640 | |
---|
641 | |
---|
642 | ! Calcul des fonctions de stabilit?? FMs, FHs, FMi, FHi : |
---|
643 | !******************************************************* |
---|
644 | |
---|
645 | !'''''''''''''' |
---|
646 | ! Cas instables |
---|
647 | !'''''''''''''' |
---|
648 | |
---|
649 | IF (zri(i) .LT. 0.) THEN |
---|
650 | |
---|
651 | |
---|
652 | SELECT CASE (iflag_corr_insta) |
---|
653 | |
---|
654 | CASE (1) ! Louis 1979 + Mascart 1995 |
---|
655 | |
---|
656 | MU=LOG(MAX(z0m(i)/z0h(i),0.01)) |
---|
657 | CMstar=6.8741+2.6933*MU-0.3601*(MU**2)+0.0154*(MU**3) |
---|
658 | PM=0.5233-0.0815*MU+0.0135*(MU**2)-0.001*(MU**3) |
---|
659 | CHstar=3.2165+4.3431*MU+0.536*(MU**2)-0.0781*(MU**3) |
---|
660 | PH=0.5802-0.1571*MU+0.0327*(MU**2)-0.0026*(MU**3) |
---|
661 | CH=CHstar*B*CKAP/LOG(z0m(i)+zgeop1(i)/(RG*z0m(i))) & |
---|
662 | & * CKAPT/LOG(z0h(i)+zgeop1(i)/(RG*z0h(i))) & |
---|
663 | & * ((zgeop1(i)/(RG*z0h(i)))**PH) |
---|
664 | CM=CMstar*B*CKAP/LOG(z0m(i)+zgeop1(i)/(RG*z0m(i))) & |
---|
665 | & *CKAP/LOG(z0m(i)+zgeop1(i)/(RG*z0m(i))) & |
---|
666 | & * ((zgeop1(i)/(RG*z0m(i)))**PM) |
---|
667 | |
---|
668 | |
---|
669 | |
---|
670 | |
---|
671 | FM(i)=1.-B*zri(i)/(1.+CM*SQRT(ABS(zri(i)))) |
---|
672 | FH(i)=1.-B*zri(i)/(1.+CH*SQRT(ABS(zri(i)))) |
---|
673 | |
---|
674 | CASE (2) ! Louis 1982 |
---|
675 | |
---|
676 | zucf = 1./(1.+3.0*CB*CC*cdmn(i)*SQRT(ABS(zri(i)) & |
---|
677 | *(1.0+zgeop1(i)/(RG*z0m(i))))) |
---|
678 | FM(i) = AMAX1((1.-2.0*CB*zri(i)*zucf),f_ri_cd_min) |
---|
679 | FH(i) = AMAX1((1.-3.0*CB*zri(i)*zucf),f_ri_cd_min) |
---|
680 | |
---|
681 | |
---|
682 | CASE (3) ! Laurent Li |
---|
683 | |
---|
684 | |
---|
685 | FM(i) = MAX(SQRT(1.0-18.0*zri(i)),f_ri_cd_min) |
---|
686 | FH(i) = MAX(SQRT(1.0-18.0*zri(i)),f_ri_cd_min) |
---|
687 | |
---|
688 | |
---|
689 | |
---|
690 | CASE default ! Louis 1982 |
---|
691 | |
---|
692 | zucf = 1./(1.+3.0*CB*CC*cdmn(i)*SQRT(ABS(zri(i)) & |
---|
693 | *(1.0+zgeop1(i)/(RG*z0m(i))))) |
---|
694 | FM(i) = AMAX1((1.-2.0*CB*zri(i)*zucf),f_ri_cd_min) |
---|
695 | FH(i) = AMAX1((1.-3.0*CB*zri(i)*zucf),f_ri_cd_min) |
---|
696 | |
---|
697 | |
---|
698 | END SELECT |
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699 | |
---|
700 | |
---|
701 | |
---|
702 | ! Calcul des drags |
---|
703 | |
---|
704 | |
---|
705 | cdm(i)=cdmn(i)*FM(i) |
---|
706 | cdh(i)=f_cdrag_ter*cdhn(i)*FH(i) |
---|
707 | |
---|
708 | |
---|
709 | ! Traitement particulier des cas oceaniques |
---|
710 | ! on applique Miller et al 1992 en l'absence de gustiness |
---|
711 | |
---|
712 | IF (nsrf == is_oce) THEN |
---|
713 | ! cdh(i)=f_cdrag_oce*cdhn(i)*FH(i) |
---|
714 | |
---|
715 | IF(iflag_gusts==0) THEN |
---|
716 | zcr = (0.0016/(cdmn(i)*SQRT(zdu2)))*ABS(ztvd-ztsolv)**(1./3.) |
---|
717 | cdh(i) =f_cdrag_oce* cdhn(i)*(1.0+zcr**1.25)**(1./1.25) |
---|
718 | ENDIF |
---|
719 | |
---|
720 | |
---|
721 | cdm(i)=MIN(cdm(i),cdmmax) |
---|
722 | cdh(i)=MIN(cdh(i),cdhmax) |
---|
723 | |
---|
724 | END IF |
---|
725 | |
---|
726 | |
---|
727 | |
---|
728 | ELSE |
---|
729 | |
---|
730 | !''''''''''''''' |
---|
731 | ! Cas stables : |
---|
732 | !''''''''''''''' |
---|
733 | zri(i) = MIN(20.,zri(i)) |
---|
734 | |
---|
735 | SELECT CASE (iflag_corr_sta) |
---|
736 | |
---|
737 | CASE (1) ! Louis 1979 + Mascart 1995 |
---|
738 | |
---|
739 | FM(i)=MAX(1./((1+BPRIME*zri(i))**2),f_ri_cd_min) |
---|
740 | FH(i)=FM(i) |
---|
741 | |
---|
742 | |
---|
743 | CASE (2) ! Louis 1982 |
---|
744 | |
---|
745 | zscf = SQRT(1.+CD*ABS(zri(i))) |
---|
746 | FM(i)= AMAX1(1. / (1.+2.*CB*zri(i)/zscf), f_ri_cd_min) |
---|
747 | FH(i)= AMAX1(1./ (1.+3.*CB*zri(i)*zscf), f_ri_cd_min ) |
---|
748 | |
---|
749 | |
---|
750 | CASE (3) ! Laurent Li |
---|
751 | |
---|
752 | FM(i)=MAX(1.0 / (1.0+10.0*zri(i)*(1+8.0*zri(i))),f_ri_cd_min) |
---|
753 | FH(i)=FM(i) |
---|
754 | |
---|
755 | |
---|
756 | CASE (4) ! King 2001 |
---|
757 | |
---|
758 | if (zri(i) .LT. C2/2.) then |
---|
759 | FM(i)=MAX((1.-zri(i)/C2)**2,f_ri_cd_min) |
---|
760 | FH(i)= FM(i) |
---|
761 | |
---|
762 | |
---|
763 | else |
---|
764 | FM(i)=MAX(C3*((C2/zri(i))**2),f_ri_cd_min) |
---|
765 | FH(i)= FM(i) |
---|
766 | endif |
---|
767 | |
---|
768 | |
---|
769 | CASE (5) ! MO |
---|
770 | |
---|
771 | if (zri(i) .LT. 1./alpha) then |
---|
772 | |
---|
773 | FM(i)=MAX((1.-alpha*zri(i))**2,f_ri_cd_min) |
---|
774 | FH(i)=FM(i) |
---|
775 | |
---|
776 | else |
---|
777 | |
---|
778 | |
---|
779 | FM(i)=MAX(1E-7,f_ri_cd_min) |
---|
780 | FH(i)=FM(i) |
---|
781 | |
---|
782 | endif |
---|
783 | |
---|
784 | |
---|
785 | |
---|
786 | |
---|
787 | |
---|
788 | CASE default ! Louis 1982 |
---|
789 | |
---|
790 | zscf = SQRT(1.+CD*ABS(zri(i))) |
---|
791 | FM(i)= AMAX1(1. / (1.+2.*CB*zri(i)/zscf), f_ri_cd_min) |
---|
792 | FH(i)= AMAX1(1./ (1.+3.*CB*zri(i)*zscf), f_ri_cd_min ) |
---|
793 | |
---|
794 | |
---|
795 | |
---|
796 | END SELECT |
---|
797 | |
---|
798 | ! Calcul des drags |
---|
799 | |
---|
800 | |
---|
801 | cdm(i)=cdmn(i)*FM(i) |
---|
802 | cdh(i)=f_cdrag_ter*cdhn(i)*FH(i) |
---|
803 | |
---|
804 | IF(nsrf.EQ.is_oce) THEN |
---|
805 | |
---|
806 | cdh(i)=f_cdrag_oce*cdhn(i)*FH(i) |
---|
807 | cdm(i)=MIN(cdm(i),cdmmax) |
---|
808 | cdh(i)=MIN(cdh(i),cdhmax) |
---|
809 | |
---|
810 | ENDIF |
---|
811 | |
---|
812 | |
---|
813 | ENDIF |
---|
814 | |
---|
815 | !xxxxxxxxxxx |
---|
816 | END DO ! Fin de la boucle sur l'horizontal |
---|
817 | !xxxxxxxxxxx |
---|
818 | ! ================================================================= c |
---|
819 | |
---|
820 | END SUBROUTINE cdragn_ri1 |
---|
821 | |
---|
822 | END MODULE cdrag_mod |
---|