physcons.f

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!  ==========================================================  !!!!!
!                 module  'physcons' description               !!!!!
!  ==========================================================  !!!!!
!                                                                      !
!   this module contains some the most frequently used math and        !
!   physics constatns for gcm models.                                  !
!                                                                      !
!   references:                                                        !
!     as set in NMC handbook from Smithsonian tables.                  !
!                                                                      !
!   modification history:                                              !
!                                                                      !
!     1990-04-30  g and rd are made consistent with NWS usage          !
!     2001-10-22  g made consistent with SI usage                      !
!     2005-04-13  added molecular weights for gases          - y-t hou !
!     2013-07-12  added temperature for homogen. nuc. for ice. - R.sun !
!                                                                      !
!   external modules referenced:                                       !
!                                                                      !
!       'module machine'                    in 'machine.f'             !
!                                                                      !
!                                                                      !
!!!!!  ==========================================================  !!!!!
!!!!!                       end descriptions                       !!!!!
!!!!!  ==========================================================  !!!!!

!========================================!
          module physcons                !
!........................................!
!
  use machine,      only : kind_phys
!
  implicit none
!
  public


  real(kind=kind_phys),parameter:: con_pi     =3.1415926535897931 
  real(kind=kind_phys),parameter:: con_sqrt2  =1.414214e+0      
  real(kind=kind_phys),parameter:: con_sqrt3  =1.732051e+0    


  real(kind=kind_phys),parameter:: con_rerth  =6.3712e+6    
  real(kind=kind_phys),parameter:: con_g      =9.80665e+0  
  real(kind=kind_phys),parameter:: con_omega  =7.2921e-5  
  real(kind=kind_phys),parameter:: con_p0     =1.01325e5 
! real(kind=kind_phys),parameter:: con_solr   =1.36822e+3     ! solar constant    (W/m2)-aer(2001)
  real(kind=kind_phys),parameter:: con_solr_old =1.3660e+3  
  real(kind=kind_phys),parameter:: con_solr   =1.3608e+3    
! real(kind=kind_phys),parameter:: con_solr   =1.36742732e+3  ! solar constant    (W/m2)-gfdl(1989) - OPR as of Jan 2006


  real(kind=kind_phys),parameter:: con_rgas   =8.314472      
  real(kind=kind_phys),parameter:: con_rd     =2.8705e+2    
  real(kind=kind_phys),parameter:: con_rv     =4.6150e+2    
  real(kind=kind_phys),parameter:: con_cp     =1.0046e+3  
  real(kind=kind_phys),parameter:: con_cv     =7.1760e+2    
  real(kind=kind_phys),parameter:: con_cvap   =1.8460e+3  
  real(kind=kind_phys),parameter:: con_cliq   =4.1855e+3    
  real(kind=kind_phys),parameter:: con_csol   =2.1060e+3   
  real(kind=kind_phys),parameter:: con_hvap   =2.5000e+6 
  real(kind=kind_phys),parameter:: con_hfus   =3.3358e+5  
  real(kind=kind_phys),parameter:: con_psat   =6.1078e+2     
  real(kind=kind_phys),parameter:: con_t0c    =2.7315e+2  
  real(kind=kind_phys),parameter:: con_ttp    =2.7316e+2   
  real(kind=kind_phys),parameter:: con_tice   =2.7120e+2 
  real(kind=kind_phys),parameter:: con_jcal   =4.1855e+0   
  real(kind=kind_phys),parameter:: con_rhw0   =1022.0     
  real(kind=kind_phys),parameter:: con_epsq   =1.0e-12    


  real(kind=kind_phys),parameter:: con_rocp   =con_rd/con_cp
  real(kind=kind_phys),parameter:: con_cpor   =con_cp/con_rd
  real(kind=kind_phys),parameter:: con_rog    =con_rd/con_g
  real(kind=kind_phys),parameter:: con_fvirt  =con_rv/con_rd-1.
  real(kind=kind_phys),parameter:: con_eps    =con_rd/con_rv
  real(kind=kind_phys),parameter:: con_epsm1  =con_rd/con_rv-1.
  real(kind=kind_phys),parameter:: con_dldt   =con_cvap-con_cliq
  real(kind=kind_phys),parameter:: con_xpona  =-con_dldt/con_rv
  real(kind=kind_phys),parameter:: con_xponb  =-con_dldt/con_rv+con_hvap/(con_rv*con_ttp)


  real(kind=kind_phys),parameter:: con_c      =2.99792458e+8  
  real(kind=kind_phys),parameter:: con_plnk   =6.6260693e-34 
  real(kind=kind_phys),parameter:: con_boltz  =1.3806505e-23 
  real(kind=kind_phys),parameter:: con_sbc    =5.670400e-8  
  real(kind=kind_phys),parameter:: con_avgd   =6.0221415e23 
  real(kind=kind_phys),parameter:: con_gasv   =22413.996e-6  
! real(kind=kind_phys),parameter:: con_amd    =28.970         ! molecular wght of dry air (g/mol)
  real(kind=kind_phys),parameter:: con_amd    =28.9644     
  real(kind=kind_phys),parameter:: con_amw    =18.0154   
  real(kind=kind_phys),parameter:: con_amo3   =47.9982 
! real(kind=kind_phys),parameter:: con_amo3   =48.0           ! molecular wght of o3  (g/mol)
  real(kind=kind_phys),parameter:: con_amco2  =44.011     
  real(kind=kind_phys),parameter:: con_amo2   =31.9999  
  real(kind=kind_phys),parameter:: con_amch4  =16.043  
  real(kind=kind_phys),parameter:: con_amn2o  =44.013 
  real(kind=kind_phys), parameter:: con_thgni  =-38.15   


! integer, parameter :: max_lon=16000, max_lat=8000, min_lon=192, min_lat=94
! integer, parameter :: max_lon=5000,  max_lat=2500, min_lon=192, min_lat=94 ! current opr
  integer, parameter :: max_lon=5000,  max_lat=2000, min_lon=192, min_lat=94 ! current opr
! real(kind=kind_phys), parameter:: rlapse  = 0.65e-2, rhc_max = 0.9999      ! current opr
  real(kind=kind_phys), parameter:: rlapse  = 0.65e-2, rhc_max = 0.9999999   ! new
! real(kind=kind_phys), parameter:: rlapse  = 0.65e-2, rhc_max = 0.9900
  real(kind=kind_phys), parameter:: cb2mb   = 10.0, pa2mb   = 0.01

  real(kind=kind_phys) :: dxmax, dxmin, dxinv

!........................................!
      end module physcons                !
!========================================!
!! @}