!	============================================================
!
!	CHEM_PARA:	An parametr file including PARAMETERs for
!				the MIT Global Chemistry Model
!
!			For version higher or equal to 2.04
!	------------------------------------------------------------
!	Author:		Chien Wang
!			MIT Joint Program on Science and Policy
!			    of Global Change
!
!       Revision History:
!
!       When    Who             What
!       ----    ----------      -------
!	061099	Chien Wang
!	112800	Chien Wang	meta_nvar from 58 to 65
!	121800	Chien Wang	nchemyr & rearranging
!	051804	Chien Wang	rearranging
!
!	============================================================

		 
! === Brief descriptions of parameters:
!
!    nlon:	No. of zonal grid points
!    nlat:	No. of meridional grid points
!    nlev:	No. of vertical levels
!    dthour:	Number of seconds of one hour
!    dtmin:	Number of seconds of one minute
!
	integer, parameter :: nlon = 1 
	integer, parameter :: nlat = N_LAT
	integer, parameter :: nlev = N_LEV
	integer, parameter :: nlon1= nlon-1 
	integer, parameter :: nlat1= nlat-1
	integer, parameter :: nlev1= nlev-1
	integer, parameter :: nlon2= nlon-2
	integer, parameter :: nlat2= nlat-2 
	integer, parameter :: nlev2= nlev-2
#if ( N_LEV == 9 )
	integer, parameter :: n_tropopause = nlev-2 
#endif
#if ( N_LEV == 11 )
	integer, parameter :: n_tropopause = nlev-4
#endif
	integer, parameter :: n2dh = nlon*nlat
	integer, parameter :: n2dv = nlat*nlev
	integer, parameter :: n3d  = n2dh*nlev
	integer, parameter :: nchemyr = NYR_CHEM
	real,    parameter :: dthour  = 3600.0 
	real,    parameter :: dtmin   = 60.0


! === Brief descriptions of parameters:
!
!    nreaction:	Number of reactions involved in the model
!
!    nvaria:	Number of variables involved in photochemistry
!
	integer, parameter :: nract = 100
	integer, parameter :: nvaria=  15


! === Brief descriptions of parameters:
!
!    dx_df11:	Mass conversion in radiative forcing of 
!		species x
!
	real, parameter :: dhfc134a_df11   = 1.04
	real, parameter :: dhfc143a_df11   = 1.03
	real, parameter :: dpfmethane_df11 = 0.69
	real, parameter :: dpfethane_df11  = 1.36
	real, parameter :: dsf6_df11       = 2.75

! === Brief descriptions of parameters:
!
!    meta_nvar:	Variable number for the meta model
!
	integer, parameter :: meta_nvar = 58	!65