1 | MODULE phycst |
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2 | !!====================================================================== |
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3 | !! *** MODULE phycst *** |
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4 | !! Definition of of both ocean and ice parameters used in the code |
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5 | !!===================================================================== |
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6 | !! History : OPA ! 1990-10 (C. Levy - G. Madec) Original code |
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7 | !! 8.1 ! 1991-11 (G. Madec, M. Imbard) cosmetic changes |
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8 | !! NEMO 1.0 ! 2002-08 (G. Madec, C. Ethe) F90, add ice constants |
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9 | !! - ! 2006-08 (G. Madec) style |
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10 | !! 3.2 ! 2006-08 (S. Masson, G. Madec) suppress useless variables + style |
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11 | !! 3.4 ! 2011-11 (C. Harris) minor changes for CICE constants |
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12 | !!---------------------------------------------------------------------- |
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13 | |
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14 | !!---------------------------------------------------------------------- |
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15 | !! phy_cst : define and print physical constant and domain parameters |
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16 | !!---------------------------------------------------------------------- |
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17 | USE par_oce ! ocean parameters |
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18 | USE in_out_manager ! I/O manager |
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19 | |
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20 | IMPLICIT NONE |
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21 | PRIVATE |
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22 | |
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23 | PUBLIC phy_cst ! routine called by inipar.F90 |
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24 | |
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25 | REAL(wp), PUBLIC :: rpi = 3.141592653589793_wp !: pi |
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26 | REAL(wp), PUBLIC :: rad = 3.141592653589793_wp / 180._wp !: conversion from degre into radian |
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27 | REAL(wp), PUBLIC :: rsmall = 0.5 * EPSILON( 1.e0 ) !: smallest real computer value |
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28 | |
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29 | REAL(wp), PUBLIC :: rday = 24.*60.*60. !: day [s] |
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30 | REAL(wp), PUBLIC :: rsiyea !: sideral year [s] |
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31 | REAL(wp), PUBLIC :: rsiday !: sideral day [s] |
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32 | REAL(wp), PUBLIC :: raamo = 12._wp !: number of months in one year |
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33 | REAL(wp), PUBLIC :: rjjhh = 24._wp !: number of hours in one day |
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34 | REAL(wp), PUBLIC :: rhhmm = 60._wp !: number of minutes in one hour |
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35 | REAL(wp), PUBLIC :: rmmss = 60._wp !: number of seconds in one minute |
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36 | REAL(wp), PUBLIC :: omega !: earth rotation parameter [s-1] |
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37 | REAL(wp), PUBLIC :: ra = 6371229._wp !: earth radius [m] |
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38 | REAL(wp), PUBLIC :: grav = 9.80665_wp !: gravity [m/s2] |
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39 | REAL(wp), PUBLIC :: rt0 = 273.15_wp !: freezing point of fresh water [Kelvin] |
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40 | |
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41 | REAL(wp), PUBLIC :: rho0 !: volumic mass of reference [kg/m3] |
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42 | REAL(wp), PUBLIC :: r1_rho0 !: = 1. / rho0 [m3/kg] |
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43 | REAL(wp), PUBLIC :: rcp !: ocean specific heat [J/Kelvin] |
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44 | REAL(wp), PUBLIC :: r1_rcp !: = 1. / rcp [Kelvin/J] |
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45 | REAL(wp), PUBLIC :: rho0_rcp !: = rho0 * rcp |
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46 | REAL(wp), PUBLIC :: r1_rho0_rcp !: = 1. / ( rho0 * rcp ) |
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47 | |
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48 | REAL(wp), PUBLIC :: emic = 0.97_wp !: emissivity of snow or ice (not used?) |
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49 | |
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50 | REAL(wp), PUBLIC :: sice = 6.0_wp !: salinity of ice (for pisces) [psu] |
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51 | REAL(wp), PUBLIC :: soce = 34.7_wp !: salinity of sea (for pisces and isf) [psu] |
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52 | REAL(wp), PUBLIC :: rLevap = 2.5e+6_wp !: latent heat of evaporation (water) |
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53 | REAL(wp), PUBLIC :: vkarmn = 0.4_wp !: von Karman constant |
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54 | REAL(wp), PUBLIC :: stefan = 5.67e-8_wp !: Stefan-Boltzmann constant |
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55 | |
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56 | REAL(wp), PUBLIC :: rhos = 330._wp !: volumic mass of snow [kg/m3] |
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57 | REAL(wp), PUBLIC :: rhoi = 917._wp !: volumic mass of sea ice [kg/m3] |
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58 | REAL(wp), PUBLIC :: rhow = 1000._wp !: volumic mass of freshwater in melt ponds [kg/m3] |
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59 | REAL(wp), PUBLIC :: rcnd_i = 2.034396_wp !: thermal conductivity of fresh ice [W/m/K] |
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60 | REAL(wp), PUBLIC :: rcpi = 2067.0_wp !: specific heat of fresh ice [J/kg/K] |
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61 | REAL(wp), PUBLIC :: rLsub = 2.834e+6_wp !: pure ice latent heat of sublimation [J/kg] |
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62 | REAL(wp), PUBLIC :: rLfus = 0.334e+6_wp !: latent heat of fusion of fresh ice [J/kg] |
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63 | REAL(wp), PUBLIC :: rTmlt = 0.054_wp !: decrease of seawater meltpoint with salinity |
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64 | |
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65 | REAL(wp), PUBLIC :: r1_rhoi !: 1 / rhoi |
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66 | REAL(wp), PUBLIC :: r1_rhos !: 1 / rhos |
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67 | REAL(wp), PUBLIC :: r1_rcpi !: 1 / rcpi |
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68 | !!---------------------------------------------------------------------- |
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69 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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70 | !! $Id$ |
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71 | !! Software governed by the CeCILL license (see ./LICENSE) |
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72 | !!---------------------------------------------------------------------- |
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73 | |
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74 | CONTAINS |
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75 | |
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76 | SUBROUTINE phy_cst |
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77 | !!---------------------------------------------------------------------- |
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78 | !! *** ROUTINE phy_cst *** |
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79 | !! |
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80 | !! ** Purpose : set and print the constants |
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81 | !!---------------------------------------------------------------------- |
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82 | |
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83 | rsiyea = 365.25_wp * rday * 2._wp * rpi / 6.283076_wp |
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84 | rsiday = rday / ( 1._wp + rday / rsiyea ) |
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85 | #if defined key_cice |
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86 | omega = 7.292116e-05 |
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87 | #else |
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88 | omega = 2._wp * rpi / rsiday |
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89 | #endif |
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90 | |
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91 | r1_rhoi = 1._wp / rhoi |
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92 | r1_rhos = 1._wp / rhos |
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93 | r1_rcpi = 1._wp / rcpi |
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94 | |
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95 | IF(lwp) THEN |
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96 | WRITE(numout,*) |
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97 | WRITE(numout,*) 'phy_cst : initialization of ocean parameters and constants' |
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98 | WRITE(numout,*) '~~~~~~~' |
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99 | WRITE(numout,*) ' mathematical constant rpi = ', rpi |
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100 | WRITE(numout,*) ' day rday = ', rday, ' s' |
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101 | WRITE(numout,*) ' sideral year rsiyea = ', rsiyea, ' s' |
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102 | WRITE(numout,*) ' sideral day rsiday = ', rsiday, ' s' |
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103 | WRITE(numout,*) ' omega omega = ', omega, ' s^-1' |
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104 | WRITE(numout,*) |
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105 | WRITE(numout,*) ' nb of months per year raamo = ', raamo, ' months' |
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106 | WRITE(numout,*) ' nb of hours per day rjjhh = ', rjjhh, ' hours' |
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107 | WRITE(numout,*) ' nb of minutes per hour rhhmm = ', rhhmm, ' mn' |
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108 | WRITE(numout,*) ' nb of seconds per minute rmmss = ', rmmss, ' s' |
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109 | WRITE(numout,*) |
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110 | WRITE(numout,*) ' earth radius ra = ', ra , ' m' |
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111 | WRITE(numout,*) ' gravity grav = ', grav , ' m/s^2' |
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112 | WRITE(numout,*) |
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113 | WRITE(numout,*) ' freezing point of water rt0 = ', rt0 , ' K' |
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114 | WRITE(numout,*) |
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115 | WRITE(numout,*) ' reference density and heat capacity now defined in eosbn2.f90' |
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116 | WRITE(numout,*) |
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117 | WRITE(numout,*) ' thermal conductivity of pure ice = ', rcnd_i , ' J/s/m/K' |
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118 | WRITE(numout,*) ' thermal conductivity of snow is defined in a namelist ' |
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119 | WRITE(numout,*) ' fresh ice specific heat = ', rcpi , ' J/kg/K' |
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120 | WRITE(numout,*) ' latent heat of fusion of fresh ice / snow = ', rLfus , ' J/kg' |
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121 | WRITE(numout,*) ' latent heat of subl. of fresh ice / snow = ', rLsub , ' J/kg' |
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122 | WRITE(numout,*) ' density of sea ice = ', rhoi , ' kg/m^3' |
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123 | WRITE(numout,*) ' density of snow = ', rhos , ' kg/m^3' |
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124 | WRITE(numout,*) ' density of freshwater (in melt ponds) = ', rhow , ' kg/m^3' |
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125 | WRITE(numout,*) ' salinity of ice (for pisces) = ', sice , ' psu' |
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126 | WRITE(numout,*) ' salinity of sea (for pisces and isf) = ', soce , ' psu' |
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127 | WRITE(numout,*) ' latent heat of evaporation (water) = ', rLevap , ' J/m^3' |
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128 | WRITE(numout,*) ' von Karman constant = ', vkarmn |
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129 | WRITE(numout,*) ' Stefan-Boltzmann constant = ', stefan , ' J/s/m^2/K^4' |
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130 | WRITE(numout,*) |
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131 | WRITE(numout,*) ' conversion: degre ==> radian rad = ', rad |
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132 | WRITE(numout,*) |
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133 | WRITE(numout,*) ' smallest real computer value rsmall = ', rsmall |
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134 | ENDIF |
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135 | |
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136 | END SUBROUTINE phy_cst |
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137 | |
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138 | !!====================================================================== |
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139 | END MODULE phycst |
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