| 1 | !SFX_LIC Copyright 1994-2014 CNRS, Meteo-France and Universite Paul Sabatier |
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| 2 | !SFX_LIC This is part of the SURFEX software governed by the CeCILL-C licence |
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| 3 | !SFX_LIC version 1. See LICENSE, CeCILL-C_V1-en.txt and CeCILL-C_V1-fr.txt |
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| 4 | !SFX_LIC for details. version 1. |
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| 5 | ! ############### |
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| 6 | MODULE MODD_CSTS |
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| 7 | ! ############### |
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| 8 | |
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| 9 | !!**** *MODD_CSTS* - declaration of Physic constants |
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| 10 | !! |
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| 11 | !! PURPOSE |
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| 12 | !! ------- |
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| 13 | ! The purpose of this declarative module is to declare the |
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| 14 | ! Physics constants. |
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| 15 | |
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| 16 | !! |
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| 17 | !!** IMPLICIT ARGUMENTS |
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| 18 | !! ------------------ |
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| 19 | !! None |
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| 20 | !! |
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| 21 | !! REFERENCE |
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| 22 | !! --------- |
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| 23 | !! |
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| 24 | !! AUTHOR |
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| 25 | !! ------ |
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| 26 | !! V. Ducrocq *Meteo France* |
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| 27 | !! |
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| 28 | !! MODIFICATIONS |
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| 29 | !! ------------- |
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| 30 | !! Original 16/05/94 |
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| 31 | !! J. Stein 02/01/95 add xrholw |
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| 32 | !! J.-P. Pinty 13/12/95 add XALPI,XBETAI,XGAMI |
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| 33 | !! J. Stein 25/07/97 add XTH00 |
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| 34 | !! V. Masson 05/10/98 add XRHOLI |
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| 35 | !! C. Mari 31/10/00 add NDAYSEC |
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| 36 | !! J. Escobar 06/13 add XSURF_TIMY XSURF_TIMY_12 XSURF_EPSILON for REAL*4 |
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| 37 | !------------------------------------------------------------------------------- |
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| 38 | |
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| 39 | !* 0. DECLARATIONS |
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| 40 | ! ------------ |
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| 41 | |
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| 42 | IMPLICIT NONE |
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| 43 | REAL,SAVE :: XPI ! Pi |
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| 44 | |
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| 45 | REAL,SAVE :: XDAY,XSIYEA,XSIDAY ! day duration, sideral year duration, |
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| 46 | ! sideral day duration |
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| 47 | |
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| 48 | REAL,SAVE :: XKARMAN ! von karman constant |
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| 49 | REAL,SAVE :: XLIGHTSPEED ! light speed |
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| 50 | REAL,SAVE :: XPLANCK ! Planck constant |
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| 51 | REAL,SAVE :: XBOLTZ ! Boltzman constant |
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| 52 | REAL,SAVE :: XAVOGADRO ! Avogadro number |
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| 53 | |
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| 54 | REAL,SAVE :: XRADIUS,XOMEGA ! Earth radius, earth rotation |
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| 55 | REAL,SAVE :: XG ! Gravity constant |
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| 56 | |
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| 57 | REAL,SAVE :: XP00 ! Reference pressure |
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| 58 | |
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| 59 | REAL,SAVE :: XSTEFAN,XI0 ! Stefan-Boltzman constant, solar constant |
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| 60 | |
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| 61 | REAL,SAVE :: XMD,XMV ! Molar mass of dry air and molar mass of vapor |
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| 62 | REAL,SAVE :: XRD,XRV ! Gaz constant for dry air, gaz constant for vapor |
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| 63 | REAL,SAVE :: XCPD,XCPV ! Cpd (dry air), Cpv (vapor) |
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| 64 | REAL,SAVE :: XRHOLW ! Volumic mass of liquid water |
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| 65 | REAL,SAVE :: XCL,XCI ! Cl (liquid), Ci (ice) |
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| 66 | REAL,SAVE :: XTT ! Triple point temperature |
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| 67 | REAL,SAVE :: XTTSI ! Temperature of ice fusion over salty sea |
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| 68 | REAL,SAVE :: XTTS ! Equivalent temperature of ice fusion over a mixed of sea and sea-ice |
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| 69 | REAL,SAVE :: XICEC ! Threshold fraction over which the tile is considered as only covered with ice |
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| 70 | REAL,SAVE :: XLVTT ! Vaporization heat constant |
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| 71 | REAL,SAVE :: XLSTT ! Sublimation heat constant |
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| 72 | REAL,SAVE :: XLMTT ! Melting heat constant |
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| 73 | REAL,SAVE :: XESTT ! Saturation vapor pressure at triple point |
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| 74 | ! temperature |
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| 75 | REAL,SAVE :: XALPW,XBETAW,XGAMW ! Constants for saturation vapor |
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| 76 | ! pressure function |
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| 77 | REAL,SAVE :: XALPI,XBETAI,XGAMI ! Constants for saturation vapor |
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| 78 | ! pressure function over solid ice |
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| 79 | REAL, SAVE :: XTH00 ! reference value for the potential |
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| 80 | ! temperature |
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| 81 | REAL,SAVE :: XRHOLI ! Volumic mass of ice |
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| 82 | REAL,SAVE :: XCONDI ! thermal conductivity of ice (W m-1 K-1) |
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| 83 | |
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| 84 | INTEGER, SAVE :: NDAYSEC ! Number of seconds in a day |
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| 85 | |
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| 86 | REAL,SAVE :: XSURF_TINY ! minimum real on this machine |
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| 87 | REAL,SAVE :: XSURF_TINY_12 ! sqrt(minimum real on this machine) |
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| 88 | REAL,SAVE :: XSURF_EPSILON ! minimum space with 1.0 |
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| 89 | |
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| 90 | END MODULE MODD_CSTS |
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| 91 | |
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