MODULE earth_const
  USE prec
  USE math_const
  
  REAL(rstd),SAVE :: radius=6.37122E6
  REAL(rstd),SAVE :: g=9.80616
  REAL(rstd),PARAMETER :: daysec=86400
  REAL(rstd),SAVE :: omega=7.292E-5
  REAL(rstd),SAVE :: kappa=0.2857143
  REAL(rstd),SAVE :: cpp=1004.70885
  REAL(rstd),SAVE :: cppv=1860.
  REAL(rstd),SAVE :: Rv=461.5
  REAL(rstd),SAVE :: Treff=273.
  REAL(rstd),SAVE :: preff=101325.
  REAL(rstd),SAVE :: pa=50000. ! default value set to preff/2 by disvert_std
  REAL(rstd),SAVE :: scale_height=8000. ! atmospheric scale height (m)
  REAL(rstd),SAVE :: scale_factor=1.
  REAL(rstd),SAVE :: gas_constant = 8.3144621 
  REAL(rstd),SAVE :: mu                 ! molar mass of the atmosphere

CONTAINS
  
  SUBROUTINE init_earth_const
  USE getin_mod
  IMPLICIT NONE
  REAL(rstd) :: X=1
  
    CALL getin("radius",radius)
    CALL getin("g",g)
    CALL getin("scale_factor",scale_factor)
    CALL getin("omega",omega)  
    CALL getin("kappa",kappa)  
    CALL getin("cpp",cpp)  
    CALL getin("cppv",cppv)
    CALL getin("Rv",Rv)
    CALL getin("preff",preff)  
    CALL getin("Treff",Treff)  
    CALL getin("scale_height",scale_height)
    
    mu=kappa/cpp
    radius=radius/scale_factor
    omega=omega*scale_factor
    
  END SUBROUTINE init_earth_const
  
  
END MODULE earth_const