1 | SUBROUTINE PPPMER(KPROMA,KSTART,KPROF,PRPRESS,POROG,PTSTAR,PT0,PMSLPPP) |
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2 | |
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3 | !**** *PPPMER* - POST-PROCESS MSL PRESSURE. |
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4 | |
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5 | ! PURPOSE. |
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6 | ! -------- |
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7 | ! COMPUTES MSL PRESSURE. |
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8 | |
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9 | !** INTERFACE. |
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10 | ! ---------- |
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11 | |
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12 | ! *CALL* *PPPMER(KPROMA,KSTART,KPROF,PRPRESS,POROG,PTSTAR,PT0, |
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13 | ! S PMSLPPP) |
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14 | |
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15 | ! EXPLICIT ARGUMENTS |
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16 | ! -------------------- |
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17 | |
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18 | |
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19 | ! KPROMA - HORIZONTAL DIMENSION. (INPUT) |
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20 | ! KSTART - START OF WORK. (INPUT) |
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21 | ! KPROF - DEPTH OF WORK. (INPUT) |
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22 | ! PRPRESS(KPROMA) - SURFACE PRESSURE (INPUT) |
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23 | ! POROG(KPROMA) - MODEL OROGRAPHY. (INPUT) |
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24 | ! PTSTAR(KPROMA) - SURFACE TEMPERATURE (INPUT) |
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25 | ! PT0(KPROMA) - STANDARD SURFACE TEMPERATURE (INPUT) |
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26 | ! PMSLPPP(KPROMA) - POST-PROCESSED MSL PRESSURE (OUTPUT) |
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27 | ! IMPLICIT ARGUMENTS : CONSTANTS FROM YOMCST,YOMGEM,YOMSTA. |
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28 | ! -------------------- |
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29 | |
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30 | ! METHOD. |
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31 | ! ------- |
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32 | ! SEE DOCUMENTATION |
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33 | |
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34 | ! EXTERNALS. NONE |
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35 | ! ---------- |
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36 | |
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37 | ! REFERENCE. |
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38 | ! ---------- |
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39 | ! ECMWF Research Department documentation of the IFS |
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40 | |
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41 | ! AUTHOR. |
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42 | ! ------- |
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43 | ! MATS HAMRUD AND PHILIPPE COURTIER *ECMWF* |
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44 | |
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45 | ! MODIFICATIONS. |
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46 | ! -------------- |
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47 | ! ORIGINAL : 89-01-26 |
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48 | |
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49 | ! E. A-son, J-F Geleyn 920409 Mod. T*, T0 and alpha below surface. |
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50 | ! M.Hamrud 01-Oct-2003 CY28 Cleaning |
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51 | |
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52 | ! ------------------------------------------------------------------ |
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53 | |
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54 | ! USE PARKIND1 |
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55 | !<http://intra.cnrm.meteo.fr/eac/ARPCLI5.2/doci/code/arpcli5.2/xrd/module/parkind1.F90.php#parkind1> ,ONLY : JPIM ,JPRB |
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56 | ! USE YOMHOOK |
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57 | !<http://intra.cnrm.meteo.fr/eac/ARPCLI5.2/doci/code/arpcli5.2/xrd/module/yomhook.F90.php#yomhook> ,ONLY : LHOOK, DR_HOOK |
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58 | |
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59 | !USE YOMCST, ONLY : RG, RD |
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60 | !<http://intra.cnrm.meteo.fr/eac/ARPCLI5.2/doci/code/arpcli5.2/arp/module/yomcst.F90.php#yomcst> , ONLY : RG |
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61 | |
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62 | !<http://intra.cnrm.meteo.fr/eac/ARPCLI5.2/doci/code/arpcli5.2/xrd/support/rg.F.php#rg> ,RD |
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63 | ! USE YOMSTA |
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64 | !<http://intra.cnrm.meteo.fr/eac/ARPCLI5.2/doci/code/arpcli5.2/arp/module/yomsta.F90.php#yomsta> , ONLY : RDTDZ1 |
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65 | |
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66 | IMPLICIT NONE |
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67 | |
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68 | include "YOMCST.h" |
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69 | !IM INTEGER(KIND=JPIM),INTENT(IN) :: KPROMA |
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70 | !IM INTEGER(KIND=JPIM),INTENT(IN) :: KSTART |
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71 | !IM INTEGER(KIND=JPIM),INTENT(IN) :: KPROF |
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72 | INTEGER,INTENT(IN) :: KPROMA |
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73 | INTEGER,INTENT(IN) :: KSTART |
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74 | INTEGER,INTENT(IN) :: KPROF |
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75 | !IM REAL(KIND=JPRB) ,INTENT(IN) :: PRPRESS(KPROMA) |
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76 | !IM REAL(KIND=JPRB) ,INTENT(IN) :: POROG(KPROMA) |
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77 | !IM REAL(KIND=JPRB) ,INTENT(IN) :: PTSTAR(KPROMA) |
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78 | !IM REAL(KIND=JPRB) ,INTENT(IN) :: PT0(KPROMA) |
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79 | !IM REAL(KIND=JPRB) ,INTENT(OUT) :: PMSLPPP(KPROMA) |
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80 | !IM REAL(KIND=JPRB) :: ZTSTAR(KPROMA) |
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81 | !IM REAL(KIND=JPRB) :: ZALPHA(KPROMA) |
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82 | REAL,INTENT(IN) :: PRPRESS(KPROMA) |
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83 | REAL,INTENT(IN) :: POROG(KPROMA) |
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84 | REAL,INTENT(IN) :: PTSTAR(KPROMA) |
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85 | REAL,INTENT(IN) :: PT0(KPROMA) |
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86 | REAL,INTENT(OUT) :: PMSLPPP(KPROMA) |
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87 | REAL :: ZTSTAR(KPROMA) |
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88 | REAL :: ZALPHA(KPROMA) |
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89 | |
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90 | !IM INTEGER(KIND=JPIM) :: JL |
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91 | INTEGER :: JL |
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92 | |
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93 | !IM REAL(KIND=JPRB) :: ZDTDZSG, ZOROG, ZT0, ZTX, ZTY, ZX, ZY, ZY2 |
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94 | !IM REAL(KIND=JPRB) :: ZHOOK_HANDLE |
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95 | REAL :: ZDTDZSG, ZOROG, ZT0, ZTX, ZTY, ZX, ZY, ZY2 |
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96 | REAL :: ZHOOK_HANDLE |
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97 | !IM beg |
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98 | REAL, PARAMETER :: RDTDZ1=-0.0065 !or USE YOMSTA |
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99 | !IM end |
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100 | |
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101 | ! ------------------------------------------------------------------ |
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102 | |
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103 | !* 1. POST-PROCESS MSL PRESSURE. |
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104 | ! -------------------------- |
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105 | |
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106 | !* 1.1 COMPUTATION OF MODIFIED ALPHA AND TSTAR. |
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107 | |
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108 | !IM IF (LHOOK) CALL DR_HOOK('PPPMER',0,ZHOOK_HANDLE) |
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109 | !IM ZTX=290.5_JPRB |
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110 | !IM ZTY=255.0_JPRB |
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111 | ZTX=290.5 |
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112 | ZTY=255.0 |
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113 | ZDTDZSG=-RDTDZ1/RG |
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114 | !<http://intra.cnrm.meteo.fr/eac/ARPCLI5.2/doci/code/arpcli5.2/xrd/support/rg.F.php#rg> |
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115 | DO JL=KSTART,KPROF |
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116 | |
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117 | IF(PTSTAR(JL) < ZTY) THEN |
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118 | !IM ZTSTAR(JL)=0.5_JPRB*(ZTY+PTSTAR(JL)) |
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119 | ZTSTAR(JL)=0.5*(ZTY+PTSTAR(JL)) |
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120 | ELSEIF(PTSTAR(JL) < ZTX) THEN |
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121 | ZTSTAR(JL)=PTSTAR(JL) |
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122 | ELSE |
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123 | !IM ZTSTAR(JL)=0.5_JPRB*(ZTX+PTSTAR(JL)) |
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124 | ZTSTAR(JL)=0.5*(ZTX+PTSTAR(JL)) |
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125 | ENDIF |
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126 | |
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127 | ZT0=ZTSTAR(JL)+ZDTDZSG*POROG(JL) |
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128 | IF(ZTX > ZTSTAR(JL) .AND. ZT0 > ZTX) THEN |
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129 | ZT0=ZTX |
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130 | ELSEIF(ZTX <= ZTSTAR(JL) .AND. ZT0 > ZTSTAR(JL)) THEN |
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131 | ZT0=ZTSTAR(JL) |
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132 | ELSE |
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133 | ZT0=PT0(JL) |
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134 | ENDIF |
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135 | |
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136 | !IM ZOROG=SIGN(MAX(1.0_JPRB,ABS(POROG(JL))),POROG(JL)) |
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137 | ZOROG=SIGN(MAX(1.0,ABS(POROG(JL))),POROG(JL)) |
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138 | ZALPHA(JL)=RD*(ZT0-ZTSTAR(JL))/ZOROG |
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139 | ENDDO |
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140 | |
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141 | !* 1.2 COMPUTATION OF MSL PRESSURE. |
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142 | |
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143 | DO JL=KSTART,KPROF |
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144 | !IM IF (ABS(POROG(JL)) >= 0.001_JPRB) THEN |
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145 | IF (ABS(POROG(JL)) >= 0.001) THEN |
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146 | ZX=POROG(JL)/(RD*ZTSTAR(JL)) |
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147 | ZY=ZALPHA(JL)*ZX |
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148 | ZY2=ZY*ZY |
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149 | |
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150 | !IM PMSLPPP(JL)=PRPRESS(JL)*EXP(ZX*(1.0_JPRB-0.5_JPRB*ZY+1.0_JPRB/3._JPRB*ZY2)) |
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151 | PMSLPPP(JL)=PRPRESS(JL)*EXP(ZX*(1.0-0.5*ZY+1.0/3.*ZY2)) |
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152 | ELSE |
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153 | PMSLPPP(JL)=PRPRESS(JL) |
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154 | ENDIF |
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155 | ENDDO |
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156 | |
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157 | |
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158 | ! ------------------------------------------------------------------ |
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159 | |
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160 | !IM IF (LHOOK) CALL DR_HOOK('PPPMER',1,ZHOOK_HANDLE) |
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161 | END SUBROUTINE PPPMER |
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