      SPECIES

      Solution
 O3, OH -> HO, HO2, H2O2, NO, NO2, HNO3, CO, CH4, CH2O, CH3O2
 CH3OOH -> CH4O2, DMS -> C2H6S, SO2 -> O2S, 
 SO4 
      End Solution

      Fixed
 M, N2, O2, H2O
      End Fixed

      Col-int
 O3 = 0.
 O2 = 0.
      End Col-int

      END Species

  Solution classes
      Explicit
       CO, CH4
      End explicit
      Implicit
       O3, OH, HO2, H2O2, NO, NO2, HNO3, CH2O, CH3O2, CH3OOH
       DMS, SO2, SO4
      End implicit
  END Solution classes

  CHEMISTRY
      Photolysis
*[jo1d]         O3 + hv -> 2*OH
[jo1d->,jo3_a] O3 + hv -> 2*OH
[jh2o2]        H2O2 + hv -> 2*OH
[jno2]         NO2 + hv -> NO + O3
[jch2o_a]      CH2O + hv -> CO + 2*HO2
[jch2o_b]      CH2O + hv -> CO
[jch3ooh]      CH3OOH + hv -> CH2O + HO2 + OH
      End Photolysis

      Reactions
              O3 + OH -> HO2 + O2                                       ;   1.700E-12, -940
[out6]        HO2 + O3 -> 2*O2 + OH                                     ;   1.000E-14, -490
              HO2 + OH -> H2O + O2                                      ;   4.800E-11, 250
[ho2_ho2]     HO2 + HO2 -> H2O2 + O2                                    
              H2O2 + OH -> H2O + HO2                                    ;   1.800E-12
              NO + O3 -> NO2 + O2                                       ;   3.000E-12, -1500
              HO2 + NO -> NO2 + OH                                      ;   3.500E-12, 250
              NO2 + OH + M -> HNO3                                      ;   1.800E-30, 3.00, 2.800E-11, 0.00, 0.6
              CH4 + OH -> CH3O2 + H2O                                   ;   2.450E-12, -1775
[oh_co]       CO + OH -> HO2                                            
              CH2O + OH -> CO + H2O + HO2                               ;   5.500E-12, 125
              CH3O2 + HO2 -> CH3OOH + O2                                ;   4.100E-13, 750
              CH3OOH + OH -> CH3O2 + H2O                                ;   2.700E-12, 200
              CH3OOH + OH -> CH2O + H2O + OH                            ;   1.100E-12, 200
              CH3O2 + NO -> CH2O + HO2 + NO2                            ;   2.800E-12, 300
              CH3O2 + CH3O2 -> 2*CH2O +  0.80*HO2                       ;   9.500E-14, 390
[het_no2_h2o] H2O + NO2 ->  0.50*HNO3                                   
              DMS + OH -> SO2                                           ;   1.100E-11, -240
[oh_dms]      DMS + OH ->  0.75*SO2                         
[so2_oh_m]    OH + SO2 + M -> SO4                                       ;   3.300E-31, 4.30, 1.600E-12, 0.00, 0.6
[aq_so2_h2o2] H2O2 + SO2 -> SO4                                    
[aq_so2_o3]   O3 + SO2 -> SO4                                        
      End reactions

      Heterogeneous
       H2O2, HNO3, CH2O, SO2
      End heterogeneous

      Ext forcing
       NO2, CO
      End Ext Forcing

  END Chemistry

  SIMULATION PARAMETERS
 
     Version Options
        model   = cam
        machine = intel
        architecture = hybrid
        vec_ftns  = on
        multitask = on
        namemod = on
        modules = on
     End Version Options

  End Simulation Parameters
