| 1 | subroutine calc_condlh(ngrid,nlayer,pt,Lcx) |
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| 2 | |
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| 3 | use tracer_h |
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| 4 | |
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| 5 | implicit none |
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| 6 | |
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| 7 | !==================================================================== |
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| 8 | ! |
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| 9 | ! Purpose |
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| 10 | ! ------- |
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| 11 | ! Computes latent heat of condensation [J.kg-1] for ice tracers |
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| 12 | ! |
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| 13 | ! INPUT |
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| 14 | ! ----- |
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| 15 | ! ngrid = Number of grid points in the chunk [-] |
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| 16 | ! nlayer = Number of vertical layers [-] |
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| 17 | ! pt = Temperature [K] |
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| 18 | ! |
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| 19 | ! OUTPUT |
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| 20 | ! ------ |
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| 21 | ! Lcx = Condensation latente heat [J.kg-1] |
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| 22 | ! |
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| 23 | ! Author |
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| 24 | ! ------ |
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| 25 | ! B. de Batz de Trenquelléon (07/2023) |
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| 26 | ! |
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| 27 | ! !!! WARNING !!! |
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| 28 | ! --------------- |
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| 29 | ! We suppose a given order of tracers ! |
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| 30 | ! Tracers come from microphysics (ices_indx) : |
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| 31 | ! CH4 --> 1 |
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| 32 | ! C2H2 --> 2 |
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| 33 | ! C2H6 --> 3 |
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| 34 | ! HCN --> 4 |
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| 35 | !==================================================================== |
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| 36 | |
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| 37 | |
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| 38 | !------------------------------------ |
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| 39 | ! 0. DECLARATIONS |
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| 40 | !------------------------------------ |
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| 41 | |
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| 42 | ! Inputs : |
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| 43 | !--------- |
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| 44 | integer, intent(in) :: ngrid |
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| 45 | integer, intent(in) :: nlayer |
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| 46 | real, intent(in) :: pt(ngrid,nlayer) |
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| 47 | |
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| 48 | ! Outputs : |
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| 49 | !---------- |
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| 50 | real, intent(out) :: Lcx(ngrid,nlayer,size(ices_indx)) |
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| 51 | |
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| 52 | ! Parameters : |
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| 53 | !------------- |
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| 54 | real, parameter :: mmolCH4 = 16.e-3 ! Molar mass of CH4 [kg.mol-1] |
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| 55 | real, parameter :: mmolC2H2 = 26.e-3 ! Molar mass of C2H2 [kg.mol-1] |
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| 56 | real, parameter :: mmolC2H6 = 30.e-3 ! Molar mass of C2H6 [kg.mol-1] |
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| 57 | real, parameter :: mmolHCN = 27.e-3 ! Molar mass of HCN [kg.mol-1] |
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| 58 | |
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| 59 | real, parameter :: TcCH4 = 190.56 ! Critical point of CH4 [K] |
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| 60 | real, parameter :: TcC2H2 = 308.35 ! Critical point of C2H2 [K] |
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| 61 | real, parameter :: TcC2H6 = 305.35 ! Critical point of C2H6 [K] |
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| 62 | real, parameter :: TcHCN = 456.70 ! Critical point of HCN [K] |
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| 63 | |
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| 64 | ! Local variables : |
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| 65 | !------------------ |
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| 66 | integer :: iq, ig, l |
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| 67 | real*8 :: ftx ! Variables for latente heat [-] |
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| 68 | |
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| 69 | |
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| 70 | !------------------------------------ |
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| 71 | ! 1. INITIALISATION |
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| 72 | !------------------------------------ |
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| 73 | |
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| 74 | do iq = 1, size(ices_indx) ! For each species |
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| 75 | |
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| 76 | ! CH4 : |
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| 77 | !------ |
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| 78 | if(trim(nameOfTracer(gazs_indx(iq))) .eq. "CH4") then |
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| 79 | |
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| 80 | do ig = 1, ngrid ! Main loop on the horizontal grid |
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| 81 | do l = 1, nlayer ! Loop on vertical layers |
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| 82 | ftx = (1. - pt(ig,l)) / TcCH4 |
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| 83 | if (ftx .le. 1.e-3) ftx = 1.e-3 |
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| 84 | Lcx(ig,l,iq) = 8.314 * TcCH4 * (7.08 * ftx**0.354 + 10.95 * 1.1e-2 * ftx**0.456) / mmolCH4 |
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| 85 | enddo ! End of loop on vertical layers |
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| 86 | enddo ! End of main loop on the horizontal grid |
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| 87 | |
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| 88 | |
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| 89 | ! C2H2 : |
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| 90 | !------- |
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| 91 | else if(trim(nameOfTracer(gazs_indx(iq))) .eq. "C2H2") then |
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| 92 | |
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| 93 | do ig = 1, ngrid ! Main loop on the horizontal grid |
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| 94 | do l = 1, nlayer ! Loop on vertical layers |
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| 95 | ftx = (1. - pt(ig,l)) / TcC2H2 |
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| 96 | if (ftx .le. 1.e-3) ftx = 1.e-3 |
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| 97 | Lcx(ig,l,iq) = 8.314 * TcC2H2 * (7.08 * ftx**0.354 + 10.95 * 1.9e-1 * ftx**0.456) / mmolC2H2 |
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| 98 | enddo ! End of loop on vertical layers |
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| 99 | enddo ! End of main loop on the horizontal grid |
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| 100 | |
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| 101 | |
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| 102 | ! C2H6 : |
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| 103 | !------- |
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| 104 | else if(trim(nameOfTracer(gazs_indx(iq))) .eq. "C2H6") then |
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| 105 | |
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| 106 | do ig = 1, ngrid ! Main loop on the horizontal grid |
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| 107 | do l = 1, nlayer ! Loop on vertical layers |
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| 108 | ftx = (1. - pt(ig,l)) / TcC2H6 |
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| 109 | if (ftx .le. 1.e-3) ftx = 1.e-3 |
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| 110 | Lcx(ig,l,iq) = 8.314 * TcC2H6 * (7.08 * ftx**0.354 + 10.95 * 9.9e-2 * ftx**0.456) / mmolC2H6 |
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| 111 | enddo ! End of loop on vertical layers |
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| 112 | enddo ! End of main loop on the horizontal grid |
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| 113 | |
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| 114 | |
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| 115 | ! HCN : |
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| 116 | !------ |
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| 117 | else if(trim(nameOfTracer(gazs_indx(iq))) .eq. "HCN") then |
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| 118 | |
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| 119 | do ig = 1, ngrid ! Main loop on the horizontal grid |
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| 120 | do l = 1, nlayer ! Loop on vertical layers |
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| 121 | ftx = (1. - pt(ig,l)) / TcHCN |
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| 122 | if (ftx .le. 1.e-3) ftx = 1.e-3 |
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| 123 | Lcx(ig,l,iq) = 8.314 * TcHCN * (7.08 * ftx**0.354 + 10.95 * 3.88e-1 * ftx**0.456) / mmolHCN |
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| 124 | enddo ! End of loop on vertical layers |
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| 125 | enddo ! End of main loop on the horizontal grid |
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| 126 | |
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| 127 | |
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| 128 | else |
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| 129 | write(*,*) 'Species ',trim(nameOfTracer(gazs_indx(iq))),' not considered... Check traceur.def' |
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| 130 | Lcx(ig,l,iq) = 0.0D0 |
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| 131 | endif |
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| 132 | |
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| 133 | enddo ! End of species |
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| 134 | |
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| 135 | return |
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| 136 | |
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| 137 | end subroutine calc_condlh |
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