| 1 | subroutine calc_cpp_mugaz |
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| 2 | |
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| 3 | !================================================================== |
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| 4 | ! Purpose |
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| 5 | ! ------- |
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| 6 | ! Check to see if the atmospheric specific heat capacity and |
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| 7 | ! mean molar mass for the gas mixture defined in gases.def |
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| 8 | ! corresponds to what we're using. If it doesn't, abort run |
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| 9 | ! unless option 'check_cpp_match' is set to false in |
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| 10 | ! callphys.def. |
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| 11 | ! NOTE: for now, in 1D we do as before. Jeremy, if you're |
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| 12 | ! re-writing rcm1d you may want to alter this. |
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| 13 | ! |
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| 14 | ! Authors |
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| 15 | ! ------- |
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| 16 | ! Robin Wordsworth (2009) |
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| 17 | ! |
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| 18 | !================================================================== |
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| 19 | |
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| 20 | use gases_h |
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| 21 | implicit none |
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| 22 | |
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| 23 | #include "dimensions.h" |
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| 24 | #include "dimphys.h" |
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| 25 | #include "comcstfi.h" |
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| 26 | #include "callkeys.h" |
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| 27 | |
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| 28 | real cpp_c |
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| 29 | real mugaz_c |
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| 30 | |
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| 31 | integer igas |
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| 32 | |
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| 33 | cpp_c = 0.0 |
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| 34 | mugaz_c = 0.0 |
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| 35 | |
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| 36 | do igas=1,ngasmx |
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| 37 | |
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| 38 | if(igas.eq.vgas)then |
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| 39 | ! ignore variable gas in cpp calculation |
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| 40 | else |
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| 41 | ! all values at 300 K from Engineering Toolbox |
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| 42 | if(gnom(igas).eq.'CO2')then |
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| 43 | cpp_c = cpp_c + 0.846*gfrac(igas) |
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| 44 | mugaz_c = mugaz_c + 44.01*gfrac(igas) |
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| 45 | elseif(gnom(igas).eq.'N2_')then |
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| 46 | cpp_c = cpp_c + 1.040*gfrac(igas) |
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| 47 | mugaz_c = mugaz_c + 28.01*gfrac(igas) |
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| 48 | elseif(gnom(igas).eq.'H2_')then |
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| 49 | cpp_c = cpp_c + 14.31*gfrac(igas) |
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| 50 | mugaz_c = mugaz_c + 2.01*gfrac(igas) |
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| 51 | elseif(gnom(igas).eq.'H2O')then |
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| 52 | cpp_c = cpp_c + 1.864*gfrac(igas) |
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| 53 | mugaz_c = mugaz_c + 18.02*gfrac(igas) |
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| 54 | elseif(gnom(igas).eq.'CH4')then |
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| 55 | cpp_c = cpp_c + 2.226*gfrac(igas) |
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| 56 | mugaz_c = mugaz_c + 16.04*gfrac(igas) |
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| 57 | elseif(gnom(igas).eq.'NH3')then |
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| 58 | cpp_c = cpp_c + 2.175*gfrac(igas) |
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| 59 | mugaz_c = mugaz_c + 17.03*gfrac(igas) |
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| 60 | print*,'WARNING, cpp for NH3 may be for liquid' |
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| 61 | else |
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| 62 | print*,'Error in calc_cpp_mugaz: Gas species not recognised!' |
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| 63 | call abort |
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| 64 | endif |
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| 65 | endif |
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| 66 | |
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| 67 | enddo |
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| 68 | |
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| 69 | cpp_c = 1000.0*cpp_c |
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| 70 | |
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| 71 | print*,'Cp in calc_cpp_mugaz is ',cpp_c,'J kg^-1 K^-1' |
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| 72 | print*,'Mg in calc_cpp_mugaz is ',mugaz_c,'amu' |
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| 73 | print*,'Predefined Cp in physics is ',cpp,'J kg^-1 K^-1' |
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| 74 | print*,'Predefined Mg in physics is ',mugaz,'amu' |
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| 75 | |
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| 76 | if(ngridmx.eq.1)then |
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| 77 | print*,'Automatically setting cpp & mugaz to calculated values in calc_cpp_mugaz' |
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| 78 | cpp = cpp_c |
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| 79 | mugaz = mugaz_c |
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| 80 | R = 8.314511E+0 *1000.E+0/mugaz |
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| 81 | rcp = R/cpp |
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| 82 | elseif((cpp.ne.cpp_c) .or. (mugaz.ne.mugaz_c))then |
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| 83 | if(check_cpp_match)then |
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| 84 | print*,'Values do not match!' |
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| 85 | print*,'Either adjust cpp / mugaz via newstart to calculated values,' |
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| 86 | print*,'or set check_cpp_match to .false. in callphys.def.' |
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| 87 | stop |
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| 88 | endif |
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| 89 | endif |
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| 90 | |
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| 91 | return |
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| 92 | end subroutine calc_cpp_mugaz |
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