!	==================================================================
!
!	CHEM_CONST1:	An include parameter file consists of
!			some chemical constants, e.g., Avogadro number
!			and atomic weight of chemical species etc.
!			for MIT Global Chemistry Model
!	------------------------------------------------------------------
!	Author:		Chien Wang
!			MIT Joint Program on Science and Policy
!				of Global Change
!
!       Revision History:
!
!       When    Who             What
!       ----    ----------      -------
!	060999	Chien Wang	
!	051804	Chien Wang	rearranging
!
!	==================================================================

	real, parameter :: Avogadro = 6.02217e+23

	real, parameter :: 
     &		 awN2    = 28.0134, awO2   = 31.9988,
     &           awH2O   = 18.0152,                 
     &           awO     = 15.9994, awO3   = 47.9982,
     &           awCO    = 28.0104, awCO2  = 44.0098,
     &           awH     = 01.0079, awHO   = 17.0073,
     &           awHO2   = 33.0067, awH2O2 = 34.0146,
     &           awNO    = 30.0061, awNO2  = 46.0055,
     &           awNO3   = 62.0049, awN2O5 =108.0104,
     &           awHNO3  = 63.0128, awHNO4 = 79.0122,                
     &           awCH4   = 16.0426, awCH3  = 15.0347,
     &           awCHO   = 29.0183, awCH2O = 30.0262,
     &           awCH3O  = 31.0341, awCH3O2= 47.0335,
     &           awCH3O2H= 48.0414,
     &           awSO2   = 64.0588, awHOSO2= 81.0661,
     &           awSO3   = 80.0582, awH2SO4= 98.0734,
     &           awF11   =137.3675, awF12  =120.9054,
     &           awN2O   = 44.0000,
     &		 awHFC134a   = 101.024,
     &		 awPFmethane =  88.000,
     &		 awSF6       = 146.054,
     &		 awHONO  = 47.0,    awALD2 = 46.0,
     &		 awMEK   = 72.1,    awPAN  =121.1,
     &		 awALKA  = 81.2,    awETHE = 28.0,
     &		 awALKE  = 46.7,    awTOLU = 92.0,
     &		 awAROM  =111.2