1 | c*************************************************************************** |
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2 | subroutine getch (tt) |
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3 | |
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4 | c NOV 98 MALV First Version. From the work: |
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5 | c Rodrigo et al, Atmosfera, 3, pp.31-43, 19990 |
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6 | c apr 02 FGG New reactions |
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7 | c jul 03 MAC Updated to agree with lower atmosphere |
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8 | c*************************************************************************** |
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9 | |
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10 | implicit none |
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11 | |
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12 | include 'param.h' |
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13 | include 'param_v3.h' |
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14 | |
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15 | c Arguments |
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16 | real*8 tt ! Temperature |
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17 | |
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18 | |
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19 | c************************************************************************** |
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20 | |
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21 | ch2: h + o2 + co2 --> ho2 + co2 |
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22 | ch2 = 1.3d-31 * exp(tt / 300.) ** (-1.6) |
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23 | |
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24 | ch3: o + ho2 --> oh + o2 |
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25 | ch3 = 3.0d-11 * exp(200.d0 / tt) |
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26 | |
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27 | ch4: co + oh --> co2 + h |
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28 | ch4 = 1.57d-13 + 3.54d-33 |
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29 | |
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30 | ch5: ho2 + ho2 --> h2o2 + o2 |
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31 | ch5 = 1.5d-12 * exp(19.d0 / tt) |
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32 | |
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33 | ch7: oh + ho2 --> h2o + o2 |
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34 | ch7 = 4.8d-11 * exp(250.d0 / tt) |
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35 | |
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36 | ch9: o(1d) + h2o --> 2oh |
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37 | ch9 = 2.2d-10 |
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38 | |
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39 | ch10: o + o + co2 --> o2 + co2 |
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40 | ch10 = 2.5 * 5.2d-35 * exp(900. / tt) |
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41 | |
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42 | ch11: o + oh --> o2 + h |
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43 | ch11 = 2.2d-11 * exp(120.d0 / tt) |
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44 | |
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45 | ch13: h + ho2 --> h2 + o2 |
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46 | ch13 = 6.48d-12 |
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47 | |
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48 | ch14: o(1d) + h2 --> h + oh |
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49 | ch14 = 1.1d-10 |
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50 | |
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51 | ch15: oh + h2 --> h + h2o |
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52 | ch15 = 5.5d-12 * exp (-2000.d0 / tt) |
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53 | |
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54 | ch18: oh + h2o2 --> h2o + ho2 |
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55 | ch18 = 2.9d-12 * exp (-160.d0 / tt) |
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56 | |
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57 | ch19: o(1d) + co2 --> o + co2 |
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58 | ch19 = 7.4d-11 * exp(120.d0 / tt) |
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59 | |
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60 | ch20: o(1d) + o2 --> o + o2 |
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61 | ch20 = 3.2d-11 * exp (70.d0 / tt) |
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62 | |
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63 | ch21: o + o2 + co2 --> o3 + co2 |
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64 | ch21 = 2.5 * 6.0d-34 * (tt / 300.) ** (-2.4) |
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65 | |
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66 | return |
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67 | end |
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68 | |
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69 | |
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70 | |
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71 | |
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72 | |
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75 | |
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76 | |
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