RADM Chemical Mechanism
This page shows the 156 reactions that are a part of the RADM gas-phase reaction mechanism. Following the pound sign after the reaction, the rate constant is shown. If
the rate constant is indicated by an "1.0", that indicates that the rate constant for this reaction is dependent on the latitude and longitude, ie, the rate depends on the
amount of photochemical (solar radiation) energy available at that location.
{ 1} NO2 = O3P + NO # 1.0000000 /L1;
{ 2} O3 = O1D # 1.0000E-03 /R1;
{ 3} O3 = O3P # 1.0000E-03 /R2;
{ 4} HONO = OH + NO # 1.8100E-01 /L1;
{ 5} HNO3 = OH + NO2 # 1.0000E-05 /R3;
{ 6} HNO4 = HO2 + NO2 # 1.0000E-03 /R4;
{ 7} NO3 = .11*NO + 0.89*NO2 + 0.89*O3P # 1.0000E+00 /R5;
{ 8} XNO2 + ACO3 = MO2 # 6.17E+01 @ -220.0;
{ 9} H2O2 = 2.0*OH # 1.0000E-03 /R6;
{10} HCHO = CO # 1.0000E-03 /R7;
{11} HCHO = HO2 + HO2 + CO # 1.0000E-03 /R8;
{12} ALD = MO2 + HO2 + CO # 1.0000E-03 /R9;
{13} OP1 = HCHO + HO2 + OH # 1.0000E-03 /R10;
{14} OP2 = ALD + HO2 + OH # 1.0000E-03 /R11;
{15} PAA = MO2 + OH # 1.0000E-03 /R12;
{16} KET = ACO3 + ETHP # 1.0000E-03 /R13;
{17} GLY = .13*HCHO + 1.870*CO # 1.0000E-03 /R14;
{18} GLY = .45*HCHO + 1.550*CO + 0.800*HO2 # 1.0000E-03 /R15;
{19} MGLY = ACO3 + HO2 + CO # 1.0000E-03 /R16;
{20} DCB = .98*HO2 + 0.020*ACO3 + TCO3 # 1.0000E-02 /R17;
{21} ONIT = .20*ALD + 0.800*KET + HO2 + NO2 # 1.0000E-04 /R18;
{22} O3P = O3 # 8.3830E+04 @ -1175.0;
{23} O3P + NO2 = NO # 9.56E+03 @ -120.0;
{24} O1D = O3P # 2.05E+05 @ -110.0;
{25} O1D = O3P # 9.78E+04 @ -70.0;
{26} O1D + H2O = 2.0*OH # 3.23E+00;
{27} O3 + NO = NO2 # 2.94E+03 @ 1400.0;
{28} O3 + OH = HO2 # 2.35E+03 @ 940.0;
{29} O3 + HO2 = OH # 1.62E+01 @ 500.0;
{30} HO2 + NO = NO2 + OH # 5.44E+03 @ -240.0;
{31} HO2 + NO2 = HNO4 # 167.0 @ -749.0;
{32} HNO4 = HO2 + NO2 # 2.96E+15 @ 10120.0;
{33} HO2 + HO2 = H2O2 # 3.33E+02 @ -773.0;
{34} HO2 + HO2 + H2O = H2O2 # 1.12E-05 @ -2978.0;
{35} H2O2 + OH = HO2 # 4.850E+03 @ 200.0;
{36} NO + OH = HONO # 4.440E+02 @ -830.0;
{37} NO + NO = 2.0*NO2 # 2.4800E-05 @ -530.0;
{38} O3 + NO2 = NO3 # 2.0600E+02 @ 2500.0;
{39} NO3 + NO = 2.0*NO2 # 2.5000E+04 @ -150.0;
{40} NO3 + NO2 = NO + NO2 # 3.6800E+01 @ 1230.0;
{41} NO3 + HO2 = HNO3 # 3.6900E+03;
{42} NO3 + NO2 = N2O5 # 757.0 @ -270.0;
{43} N2O5 = NO2 + NO3 # 7.02E+16 @ 11200.0;
{44} N2O5 + H2O = 2.0*HNO3 # 2.94E-06;
{45} OH + NO2 = HNO3 # 1.54E+03 @ -713.0;
{46} OH + HNO3 = NO3 # 1.540E+01 @ -785.0;
{47} OH + HNO4 = NO2 # 1.9100E+03 @ -380.0;
{48} OH + HO2 = # 6.7600E+04 @ -230.0;
{49} XNO2 + XNO2 = # 5.29E-01 @ -220.0;
{50} CO + OH = HO2 # 3.2300E+02;
{51} OH = MO2 {X 300 SQUARED} # 1.70E+03 @ 1280.0;
{52} ETH + OH = ETHP {X 300 SQUARED} # 1.80E+03 @ 444.0;
{53} HC3 + OH = 0.83*HC3P + 0.17*HO2 + 0.009*HCHO + 0.075*ALD
+ 0.025*KET # 2.34E+04 @ 540.0;
{54} HC5 + OH = HC5P + 0.250*XO2 # 2.54E+04 @ 380.0;
{55} HC8 + OH = HC8P + 0.750*XO2 # 5.35E+04 @ 380.0;
{56} OL2 + OH = OL2P # 3.16E+03 @ -411.0;
{57} OLT + OH = OLTP # 7.82E+03 @ -504.0;
{58} OLI + OH = OLIP # 1.57E+04 @ -549.0;
{59} TOL + OH = .75*TOLP + .250*CSL + .250*HO2 # 3.09E+03 @ -322.0;
{60} XYL + OH = .83*XYLP + .170*CSL + .170*HO2 # 2.78E+04 @ -116.0;
{61} CSL + OH = .10*HO2 + .900*XO2 + .900*TCO3 # 5.88E+04;
{62} CSL + OH = CSL # 5.2900E+04;
{63} HCHO + OH = HO2 + CO # 1.3200E+04;
{64} ALD + OH = ACO3 # 1.0100E+04 @ -256.0;
{65} KET + OH = KETP # 1.7600E+04 @ 745.0;
{66} GLY + OH = HO2 + 2.000*CO # 1.6900E+04;
{67} MGLY + OH = ACO3 + CO # 2.5000E+04;
{68} DCB + OH = TCO3 # 4.1700E+04;
{69} OP1 + OH = 0.5*MO2 + 0.500*HCHO +0.500*OH # 1.4800E+04;
{70} OP2 + OH = {0.5*HC3P+} 0.500*ALD + 0.500*OH # 1.4800E+04;
{71} PAA + OH = ACO3 # 1.4800E+04;
{72} PAN + OH = HCHO + NO3 + XO2 {x 300 sq} # 9.0700E+02 @ 444.0;
{73} ONIT + OH = {HC3P +} NO2 # 2.2800E+04 @ 540.0;
{74} ISO + OH = OLTP # 3.7500E+04 @ -409.0;
{75} ACO3 + NO2 = PAN # 4.1200E+03 @ -181.0;
{76} PAN = ACO3 + NO2 # 1.1700E+18 @ 13543.0;
{77} TCO3 + NO2 = TPAN # 6.9100E+03;
{78} TPAN = TCO3 + NO2 # 1.1704E+18 @ 13543.0;
{79} MO2 + NO = HCHO + HO2 + NO2 # 6.1700E+03 @ -180.0;
{80} HC3P + NO = .75*ALD + 0.25*KET + 0.09*HCHO + 0.036*ONIT
+ 0.964*NO2 + 0.964*HO2 # 6.170E+03 @ -180.0;
{81} HC5P + NO = .38*ALD + 0.69*KET + 0.08*ONIT
+ 0.92*NO2 + 0.92*HO2 # 6.170E+03 @ -180.0;
{82} HC8P + NO = .35*ALD + 1.06*KET + 0.04*HCHO
+ 0.24*ONIT + 0.76*NO2 + 0.76*HO2 # 6.170E+03 @ -180.0;
{83} OL2P + NO = 1.6*HCHO + HO2 + NO2 + 0.20*ALD # 6.170E+03 @ -180.0;
{84} OLTP + NO = ALD + HCHO + HO2 + NO2 # 6.170E+03 @ -180.0;
{85} OLIP + NO = HO2 + 1.45*ALD + 0.28*HCHO
+ 0.1*KET + NO2 # 6.170E+03 @ -180.0;
{86} ACO3 + NO = MO2 + NO2 # 6.170E+03 @ -180.0;
{87} TCO3 + NO = NO2 + 0.920*HO2 + 0.890*GLY + 0.110*MGLY
+ 0.050*ACO3 + 0.950*CO + 2.000*XO2 # 6.170E+03 @ -180.0;
{88} TOLP + NO = NO2 + HO2 + 0.17*MGLY
+ 0.16*GLY + 0.70*DCB # 6.170E+03 @ -180.0;
{89} XYLP + NO = NO2 + HO2 + .45*MGLY + .806*DCB # 6.170E+03 @ -180.0;
{90} ETHP + NO = ALD + HO2 + NO2 # 6.170E+03 @ -180.0;
{91} KETP + NO = MGLY + NO2 + HO2 # 6.170E+03 @ -180.0;
{92} OLN + NO = HCHO + ALD + 2.0*NO2 # 6.170E+03 @ -180.0;
{93} HCHO + NO3 = HO2 + HNO3 + CO # 8.820E+02 @ 2058.0;
{94} ALD + NO3 = ACO3 + HNO3 # 2.060E+04 @ 1900.0;
{95} GLY + NO3 = HNO3 + HO2 + 2.000*CO # 8.820E+02 @ 2058.0;
{96} MGLY + NO3 = HNO3 + ACO3 + CO # 2.060E+03 @ 1900.0;
{97} DCB + NO3 = HNO3 + TCO3 # 2.060E+03 @ 1900.0;
{98} CSL + NO3 = HNO3 + XNO2 + 0.500*CSL # 3.250E+04;
{99} OL2 + NO3 = OLN # 2.940E+03 @ 2923.0;
{100} OLT + NO3 = OLN # 1.470E+04 @ 1895.0;
{101} OLI + NO3 = OLN # 4.850E+04 @ 975.0;
{102} ISO + NO3 = OLN # 8.590E+02;
{103} OL2 + O3 = HCHO + 0.400*ORA1 + 0.420*CO
+ 0.120*HO2 # 1.760E+01 @ 2633.0;
{104} OLT + O3 = .53*HCHO + 0.500*ALD + 0.33*CO + 0.20*ORA1
+ 0.20*ORA2 + 0.23*HO2 + 0.22*MO2 + 0.10*OH # 1.9400E+01 @ 2105.0;
{105} OLI + O3 = .18*HCHO + 0.72*ALD + 0.10*KET + 0.23*CO + 0.06*ORA1
+ 0.29*ORA2 + 0.26*HO2 + 0.14*OH + 0.31*MO2 # 1.0700E+01 @ 1136.0;
{106} ISO + O3 = .53*HCHO + 0.500*ALD + 0.33*CO + 0.20*ORA1
+ 0.20*ORA2 + 0.23*HO2 + 0.22*MO2 + 0.10*OH # 1.810E+01 @ 2013.0;
{107} HO2 + MO2 = OP1 # 1.130E+02 @ -1300.0;
{108} HO2 + ETHP = OP2 # 1.130E+02 @ -1300.0;
{109} HO2 + HC3P = OP2 # 1.130E+02 @ -1300.0;
{110} HO2 + HC5P = OP2 # 1.130E+02 @ -1300.0;
{111} HO2 + HC8P = OP2 # 1.13E+02 @ -1300.0;
{112} HO2 + OL2P = OP2 # 1.13E+02 @ -1300.0;
{113} HO2 + OLTP = OP2 # 1.13E+02 @ -1300.0;
{114} HO2 + OLIP = OP2 # 1.13E+02 @ -1300.0;
{115} HO2 + KETP = OP2 # 1.13E+02 @ -1300.0;
{116} HO2 + ACO3 = PAA # 1.13E+02 @ -1300.0;
{117} HO2 + TOLP = OP2 # 1.13E+02 @ -1300.0;
{118} HO2 + XYLP = OP2 # 1.13E+02 @ -1300.0;
{119} HO2 + TCO3 = OP2 # 1.13E+02 @ -1300.0;
{120} HO2 + OLN = ONIT # 1.13E+02 @ -1300.0;
{121} MO2 + MO2 = 1.5*HCHO + HO2 # 2.79E+02 @ -220.0;
{122} MO2 + ETHP = .75*HCHO + HO2 + 0.75*ALD # 2.06E+02 @ -220.0;
{123} MO2 + HC3P = .84*HCHO + 0.770*ALD + 0.260*KET
+ 1.000*HO2 # 6.17E+01 @ -220.0;
{124} MO2 + HC5P = .77*HCHO + 0.41*ALD + 0.75*KET
+ 1.000*HO2 # 5.00E+01 @ -220.0;
{125} MO2 + HC8P = .80*HCHO + 0.46*ALD + 1.39*KET
+ 1.000*HO2 # 4.26E+01 @ -220.0;
{126} MO2 + OL2P = 1.55*HCHO + 0.350*ALD + HO2 # 2.06E+02 @ -220.0;
{127} MO2 + OLTP = 1.25*HCHO + 0.750*ALD + HO2 # 2.06E+02 @ -220.0;
{128} MO2 + OLIP = .89*HCHO + 0.725*ALD + HO2
+ 0.55*KET # 2.50E+02 @ -220.0;
{129} MO2 + KETP = 0.75*HCHO + 0.750*MGLY + HO2 # 2.50E+02 @ -220.0;
{130} MO2 + ACO3 = HCHO + 0.5*HO2 + 0.5*MO2
+ 0.50*ORA2 # 1.41E+03 @ -220.0;
{131} MO2 + TOLP = HCHO + 0.17*MGLY + 0.16*GLY
+ 0.70*DCB + 2.0*HO2 # 2.50E+02 @ -220.0;
{132} MO2 + XYLP = HCHO + 0.45*MGLY + 0.806*DCB
+ 2.000*HO2 #2.50E+02 @ -220.0;
{133} MO2 + TCO3 = .50*HCHO + 0.445*GLY + 0.055*MGLY + 0.50*ORA2
+ 0.025*ACO3 + 0.460*HO2 + 0.475*CO + XO2 # 1.41E+03 @ -220.0;
{134} MO2 + OLN = 1.75*HCHO + 0.50*HO2 + ALD + NO2 # 2.50E+02 @ -220.0;
{135} ETHP+ ACO3 = ALD + 0.5*HO2 + 0.5*MO2
+ 0.5*ORA2 # 5.00E+02 @ -220.0;
{136} HC3P + ACO3 = .77*ALD + 0.26*KET + 0.5*HO2
+ 0.50*MO2 + 0.5*ORA2 # 1.47E+02 @ -220.0;
{137} HC5P + ACO3 = .41*ALD + 0.75*KET + 0.5*HO2
+ 0.50*MO2 + 0.5*ORA2 # 1.23E+02 @ -220.0;
{138} HC8P + ACO3 = .46*ALD + 1.39*KET + 0.5*HO2
+ 0.50*MO2 + 0.5*ORA2 # 1.06E+02 @ -220.0;
{139} OL2P + ACO3 = .80*HCHO + 0.6*ALD + 0.5*HO2
+ 0.5*MO2 + 0.5*ORA2 # 5.00E+02 @ -220.0;
{140} OLTP + ACO3 = ALD + 0.5*HCHO + 0.5*HO2
+ 0.5*MO2 + 0.5*ORA2 # 5.00E+02 @ -220.0;
{141} OLIP + ACO3 = .725*ALD + 0.55*KET + 0.14*HCHO
+0.5*HO2 + 0.50*MO2 + 0.5*ORA2 # 6.17E+02 @ -220.0;
{142} KETP + ACO3 = MGLY + 0.5*HO2 + 0.5*MO2
+ 0.5*ORA2 # 6.17E+01 @ -220.0;
{143} ACO3 + ACO3 = 2.0*MO2 # 1.75E+03 @ -220.0;
{144} ACO3 + TOLP = MO2 + 0.170*MGLY + 0.16*GLY
+ 0.70*DCB + HO2 # 6.17E+01 @ -220.0;
{145} ACO3 + XYLP = MO2 + 0.45*MGLY + 0.806*DCB
+ HO2 # 6.17E+01 @ -220.0;
{146} ACO3 + TCO3 = MO2 + 0.92*HO2 + 0.89*GLY
+ 0.11*MGLY + 0.05*ACO3 + 0.95*CO + 2.0*XO2 # 1.75E+03 @ -220.0;
{147} ACO3 + OLN = HCHO + ALD + 0.5*ORA2
+ NO2 + 0.5*MO2 # 6.17E+01 @ -220.0;
{148} OLN + OLN = 2.0*HCHO + 2.0*ALD + 2.0*NO2 # 5.29E-01 @ -220.0;
{149} XO2 + HO2 = {OP2 RC, 5/92} # 1.13E+02 @ -1300.0;
{150} XO2 + MO2 = HCHO + HO2 # 2.50E+01 @ -220.0;
{151} XO2 + ACO3 = MO2 # 6.17E+01 @ -220.0;
{152} XO2 + XO2 = # 5.29E-01 @ -220.0;
{153} XO2 + NO = NO2 # 6.17E+03 @ -180.0;
{154} XNO2 + NO2 = {ONIT RC, 5/92} # 6.17E+03 @ -180.0;
{155} XNO2 + HO2 = {OP2 RC, 5/92} # 1.13E+02 @ -1300.0;
{156} XNO2 + MO2 = HCHO + HO2 # 2.50E+01 @ -220.0;