source: lmdz_wrf/WRFV3/phys/module_cam_shr_const_mod.F @ 1

Last change on this file since 1 was 1, checked in by lfita, 11 years ago
  • -- --- Opening of the WRF+LMDZ coupling repository --- -- -

WRF: version v3.3
LMDZ: version v1818

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1!------------------------------------------------------------------------
2! Based on shr_const_mod.F90 from CAM
3! Ported to WRF by William.Gustafson@pnl.gov, Nov. 2009
4!------------------------------------------------------------------------
5
6!===============================================================================
7! SVN $Id: shr_const_mod.F90 6749 2007-10-04 20:58:20Z jwolfe $
8! SVN $URL: https://svn-ccsm-models.cgd.ucar.edu/csm_share/branch_tags/cesm1_0_rel_tags/cesm1_0_rel03_share3_100802/shr/shr_const_mod.F90 $
9!===============================================================================
10
11MODULE shr_const_mod
12
13   use shr_kind_mod
14
15   integer(SHR_KIND_IN),parameter,private :: R8 = SHR_KIND_R8 ! rename for local readability only
16
17   !----------------------------------------------------------------------------
18   ! physical constants (all data public)
19   !----------------------------------------------------------------------------
20   public
21
22   real(R8),parameter :: SHR_CONST_PI      = 3.14159265358979323846_R8  ! pi
23   real(R8),parameter :: SHR_CONST_CDAY    = 86400.0_R8      ! sec in calendar day ~ sec
24   real(R8),parameter :: SHR_CONST_SDAY    = 86164.0_R8      ! sec in siderial day ~ sec
25   real(R8),parameter :: SHR_CONST_OMEGA   = 2.0_R8*SHR_CONST_PI/SHR_CONST_SDAY ! earth rot ~ rad/sec
26   real(R8),parameter :: SHR_CONST_REARTH  = 6.37122e6_R8    ! radius of earth ~ m
27   real(R8),parameter :: SHR_CONST_G       = 9.80616_R8      ! acceleration of gravity ~ m/s^2
28
29   real(R8),parameter :: SHR_CONST_STEBOL  = 5.67e-8_R8      ! Stefan-Boltzmann constant ~ W/m^2/K^4
30   real(R8),parameter :: SHR_CONST_BOLTZ   = 1.38065e-23_R8  ! Boltzmann's constant ~ J/K/molecule
31   real(R8),parameter :: SHR_CONST_AVOGAD  = 6.02214e26_R8   ! Avogadro's number ~ molecules/kmole
32   real(R8),parameter :: SHR_CONST_RGAS    = SHR_CONST_AVOGAD*SHR_CONST_BOLTZ       ! Universal gas constant ~ J/K/kmole
33   real(R8),parameter :: SHR_CONST_MWDAIR  = 28.966_R8       ! molecular weight dry air ~ kg/kmole
34   real(R8),parameter :: SHR_CONST_MWWV    = 18.016_R8       ! molecular weight water vapor
35   real(R8),parameter :: SHR_CONST_RDAIR   = SHR_CONST_RGAS/SHR_CONST_MWDAIR        ! Dry air gas constant     ~ J/K/kg
36   real(R8),parameter :: SHR_CONST_RWV     = SHR_CONST_RGAS/SHR_CONST_MWWV          ! Water vapor gas constant ~ J/K/kg
37   real(R8),parameter :: SHR_CONST_ZVIR    = (SHR_CONST_RWV/SHR_CONST_RDAIR)-1.0_R8 ! RWV/RDAIR - 1.0
38   real(R8),parameter :: SHR_CONST_KARMAN  = 0.4_R8          ! Von Karman constant
39   real(R8),parameter :: SHR_CONST_PSTD    = 101325.0_R8     ! standard pressure ~ pascals
40   real(R8),parameter :: SHR_CONST_PDB     = 0.0112372_R8    ! ratio of 13C/12C in Pee Dee Belemnite (C isotope standard)
41 
42   real(R8),parameter :: SHR_CONST_TKTRIP  = 273.16_R8       ! triple point of fresh water        ~ K
43   real(R8),parameter :: SHR_CONST_TKFRZ   = 273.15_R8       ! freezing T of fresh water          ~ K
44   real(R8),parameter :: SHR_CONST_TKFRZSW = SHR_CONST_TKFRZ - 1.8_R8 ! freezing T of salt water  ~ K
45
46   real(R8),parameter :: SHR_CONST_RHODAIR = &               ! density of dry air at STP  ~ kg/m^3
47                         SHR_CONST_PSTD/(SHR_CONST_RDAIR*SHR_CONST_TKFRZ)
48   real(R8),parameter :: SHR_CONST_RHOFW   = 1.000e3_R8      ! density of fresh water     ~ kg/m^3
49   real(R8),parameter :: SHR_CONST_RHOSW   = 1.026e3_R8      ! density of sea water       ~ kg/m^3
50   real(R8),parameter :: SHR_CONST_RHOICE  = 0.917e3_R8      ! density of ice             ~ kg/m^3
51   real(R8),parameter :: SHR_CONST_CPDAIR  = 1.00464e3_R8    ! specific heat of dry air   ~ J/kg/K
52   real(R8),parameter :: SHR_CONST_CPWV    = 1.810e3_R8      ! specific heat of water vap ~ J/kg/K
53   real(R8),parameter :: SHR_CONST_CPVIR   = (SHR_CONST_CPWV/SHR_CONST_CPDAIR)-1.0_R8 ! CPWV/CPDAIR - 1.0
54   real(R8),parameter :: SHR_CONST_CPFW    = 4.188e3_R8      ! specific heat of fresh h2o ~ J/kg/K
55   real(R8),parameter :: SHR_CONST_CPSW    = 3.996e3_R8      ! specific heat of sea h2o   ~ J/kg/K
56   real(R8),parameter :: SHR_CONST_CPICE   = 2.11727e3_R8    ! specific heat of fresh ice ~ J/kg/K
57   real(R8),parameter :: SHR_CONST_LATICE  = 3.337e5_R8      ! latent heat of fusion      ~ J/kg
58   real(R8),parameter :: SHR_CONST_LATVAP  = 2.501e6_R8      ! latent heat of evaporation ~ J/kg
59   real(R8),parameter :: SHR_CONST_LATSUB  = &               ! latent heat of sublimation ~ J/kg
60                         SHR_CONST_LATICE + SHR_CONST_LATVAP
61   real(R8),parameter :: SHR_CONST_OCN_REF_SAL = 34.7_R8     ! ocn ref salinity (psu)
62   real(R8),parameter :: SHR_CONST_ICE_REF_SAL =  4.0_R8     ! ice ref salinity (psu)
63
64   real(R8),parameter :: SHR_CONST_SPVAL   = 1.0e30_R8       ! special missing value
65
66END MODULE shr_const_mod
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