| 1 | subroutine su_gases |
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| 2 | |
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| 3 | use gases_h |
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| 4 | |
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| 5 | implicit none |
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| 6 | |
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| 7 | integer igas, ierr, count |
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| 8 | |
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| 9 | !================================================================== |
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| 10 | ! |
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| 11 | ! Purpose |
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| 12 | ! ------- |
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| 13 | ! Load atmospheric composition info |
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| 14 | ! |
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| 15 | ! Authors |
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| 16 | ! ------- |
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| 17 | ! R. Wordsworth (2011) |
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| 18 | ! Allocatable arrays by A. Spiga (2011) |
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| 19 | ! |
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| 20 | !================================================================== |
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| 21 | |
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| 22 | ! load gas names from file 'gases.def' |
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| 23 | open(90,file='gases.def',status='old',form='formatted',iostat=ierr) |
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| 24 | if (ierr.eq.0) then |
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| 25 | write(*,*) "sugases.F90: reading file gases.def" |
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| 26 | read(90,*) |
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| 27 | read(90,*,iostat=ierr) ngasmx |
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| 28 | if (ierr.ne.0) then |
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| 29 | write(*,*) "sugases.F90: error reading number of gases" |
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| 30 | write(*,*) " (first line of gases.def) " |
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| 31 | call abort |
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| 32 | endif |
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| 33 | |
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| 34 | print*,ngasmx, " gases found in gases.def. Allocating names and molar fractions..." |
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| 35 | |
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| 36 | if (.not.allocated(gnom)) allocate(gnom(ngasmx)) |
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| 37 | do igas=1,ngasmx |
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| 38 | read(90,*,iostat=ierr) gnom(igas) |
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| 39 | if (ierr.ne.0) then |
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| 40 | write(*,*) 'sugases.F90: error reading gas names in gases.def...' |
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| 41 | call abort |
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| 42 | endif |
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| 43 | enddo !of do igas=1,ngasmx |
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| 44 | |
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| 45 | vgas=0 |
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| 46 | if(.not.allocated(gfrac)) allocate(gfrac(ngasmx)) |
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| 47 | do igas=1,ngasmx |
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| 48 | read(90,*,iostat=ierr) gfrac(igas) |
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| 49 | if (ierr.ne.0) then |
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| 50 | write(*,*) 'sugases.F90: error reading gas molar fractions in gases.def...' |
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| 51 | call abort |
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| 52 | endif |
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| 53 | |
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| 54 | ! find variable gas (if any) |
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| 55 | if(gfrac(igas).eq.-1.0)then |
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| 56 | if(vgas.eq.0)then |
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| 57 | vgas=igas |
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| 58 | else |
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| 59 | print*,'You seem to be choosing two variable gases' |
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| 60 | print*,'Check that gases.def is correct' |
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| 61 | call abort |
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| 62 | endif |
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| 63 | endif |
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| 64 | |
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| 65 | enddo !of do igas=1,ngasmx |
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| 66 | |
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| 67 | |
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| 68 | ! assign the 'igas_X' labels |
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| 69 | count=0 |
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| 70 | do igas=1,ngasmx |
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| 71 | if (gnom(igas).eq."H2_") then |
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| 72 | igas_H2=igas |
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| 73 | count=count+1 |
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| 74 | elseif (gnom(igas).eq."He_") then |
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| 75 | igas_He=igas |
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| 76 | count=count+1 |
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| 77 | elseif (gnom(igas).eq."H2O") then |
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| 78 | igas_H2O=igas |
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| 79 | count=count+1 |
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| 80 | elseif (gnom(igas).eq."CO2") then |
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| 81 | igas_CO2=igas |
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| 82 | count=count+1 |
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| 83 | elseif (gnom(igas).eq."CO_") then |
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| 84 | igas_CO=igas |
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| 85 | count=count+1 |
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| 86 | elseif (gnom(igas).eq."N2_") then |
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| 87 | igas_N2=igas |
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| 88 | count=count+1 |
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| 89 | elseif (gnom(igas).eq."O2_") then |
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| 90 | igas_O2=igas |
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| 91 | count=count+1 |
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| 92 | elseif (gnom(igas).eq."SO2") then |
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| 93 | igas_SO2=igas |
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| 94 | count=count+1 |
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| 95 | elseif (gnom(igas).eq."H2S") then |
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| 96 | igas_H2S=igas |
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| 97 | count=count+1 |
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| 98 | elseif (gnom(igas).eq."CH4") then |
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| 99 | igas_CH4=igas |
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| 100 | count=count+1 |
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| 101 | elseif (gnom(igas).eq."NH3") then |
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| 102 | igas_NH3=igas |
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| 103 | count=count+1 |
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| 104 | endif |
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| 105 | enddo |
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| 106 | |
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| 107 | if(count.ne.ngasmx)then |
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| 108 | print*,'Mismatch between ngas and number of recognised gases in sugas_corrk.F90.' |
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| 109 | print*,'Either we haven`t managed to assign all the gases, or there are duplicates.' |
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| 110 | print*,'Please try again.' |
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| 111 | endif |
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| 112 | |
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| 113 | else |
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| 114 | write(*,*) 'Cannot find required file "gases.def"' |
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| 115 | call abort |
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| 116 | endif |
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| 117 | close(90) |
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| 118 | |
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| 119 | end subroutine su_gases |
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