1 | subroutine calc_cpp_mugaz |
---|
2 | |
---|
3 | !================================================================== |
---|
4 | ! Purpose |
---|
5 | ! ------- |
---|
6 | ! Computes atmospheric specific heat capacity and |
---|
7 | ! mean molar mass for the gas mixture defined in gases.def |
---|
8 | ! with standard values. |
---|
9 | ! In 1d, one can force the model to adopt these standard values |
---|
10 | ! by setting cpp_mugaz_mode=2 in callfis.def. |
---|
11 | ! |
---|
12 | ! Authors |
---|
13 | ! ------- |
---|
14 | ! Robin Wordsworth (2009) |
---|
15 | ! A. Spiga: make the routine OK with latest changes in rcm1d |
---|
16 | ! Jeremy Leconte (2022) |
---|
17 | ! |
---|
18 | !================================================================== |
---|
19 | |
---|
20 | use gases_h |
---|
21 | use comcstfi_mod, only: cpp, mugaz |
---|
22 | use callkeys_mod, only: cpp_mugaz_mode |
---|
23 | use mod_phys_lmdz_para, only : is_master |
---|
24 | implicit none |
---|
25 | |
---|
26 | character(len=20),parameter :: myname="calc_cpp_mugaz" |
---|
27 | real cpp_c |
---|
28 | real mugaz_c |
---|
29 | |
---|
30 | integer igas |
---|
31 | |
---|
32 | cpp_c = 0.0 |
---|
33 | mugaz_c = 0.0 |
---|
34 | |
---|
35 | |
---|
36 | ! compute mugaz |
---|
37 | do igas=1,ngasmx |
---|
38 | |
---|
39 | if(igas.eq.vgas)then |
---|
40 | ! ignore variable gas in cpp calculation |
---|
41 | else |
---|
42 | ! all values at 300 K from Engineering Toolbox |
---|
43 | if(igas.eq.igas_N2)then |
---|
44 | mugaz_c = mugaz_c + 44.01*gfrac(igas) |
---|
45 | elseif(igas.eq.igas_N2)then |
---|
46 | mugaz_c = mugaz_c + 28.01*gfrac(igas) |
---|
47 | elseif(igas.eq.igas_H2)then |
---|
48 | mugaz_c = mugaz_c + 2.01*gfrac(igas) |
---|
49 | elseif(igas.eq.igas_He)then |
---|
50 | mugaz_c = mugaz_c + 4.003*gfrac(igas) |
---|
51 | elseif(igas.eq.igas_H2O)then |
---|
52 | mugaz_c = mugaz_c + 18.02*gfrac(igas) |
---|
53 | elseif(igas.eq.igas_SO2)then |
---|
54 | mugaz_c = mugaz_c + 64.066*gfrac(igas) |
---|
55 | elseif(igas.eq.igas_H2S)then |
---|
56 | mugaz_c = mugaz_c + 34.08*gfrac(igas) |
---|
57 | elseif(igas.eq.igas_CH4)then |
---|
58 | mugaz_c = mugaz_c + 16.04*gfrac(igas) |
---|
59 | elseif(igas.eq.igas_NH3)then |
---|
60 | mugaz_c = mugaz_c + 17.03*gfrac(igas) |
---|
61 | elseif(igas.eq.igas_C2H6)then |
---|
62 | ! C2H6 http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=28 |
---|
63 | mugaz_c = mugaz_c + 30.07*gfrac(igas) |
---|
64 | elseif(igas.eq.igas_C2H2)then |
---|
65 | ! C2H2 http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=1 |
---|
66 | mugaz_c = mugaz_c + 26.04*gfrac(igas) |
---|
67 | ! GG MODIF JAN2019 |
---|
68 | elseif(igas.eq.igas_CO)then |
---|
69 | mugaz_c = mugaz_c + 28.01*gfrac(igas) |
---|
70 | elseif(igas.eq.igas_OCS)then |
---|
71 | ! https://pubchem.ncbi.nlm.nih.gov/compound/carbonyl_sulfide |
---|
72 | mugaz_c = mugaz_c + 60.0751*gfrac(igas) |
---|
73 | elseif(igas.eq.igas_HCl)then |
---|
74 | mugaz_c = mugaz_c + 36.46*gfrac(igas) |
---|
75 | elseif(igas.eq.igas_HF)then |
---|
76 | mugaz_c = mugaz_c + 20.01*gfrac(igas) |
---|
77 | else |
---|
78 | if (is_master) then |
---|
79 | print*,'Error in calc_cpp_mugaz: Gas species not recognised!' |
---|
80 | endif |
---|
81 | call abort_physic(myname,'Gas species not recognised!',1) |
---|
82 | endif |
---|
83 | endif |
---|
84 | |
---|
85 | enddo |
---|
86 | |
---|
87 | !compute cpp |
---|
88 | do igas=1,ngasmx |
---|
89 | |
---|
90 | if(igas.eq.vgas)then |
---|
91 | ! ignore variable gas in cpp calculation |
---|
92 | else |
---|
93 | ! all values at 300 K from Engineering Toolbox |
---|
94 | if(igas.eq.igas_N2)then |
---|
95 | !cpp_c = cpp_c + 0.744*gfrac(igas) ! @ ~210 K (better for |
---|
96 | !Mars conditions) |
---|
97 | cpp_c = cpp_c + 0.846*gfrac(igas)*44.01/mugaz_c |
---|
98 | elseif(igas.eq.igas_N2)then |
---|
99 | cpp_c = cpp_c + 1.040*gfrac(igas)*28.01/mugaz_c |
---|
100 | elseif(igas.eq.igas_H2)then |
---|
101 | cpp_c = cpp_c + 14.31*gfrac(igas)*2.01/mugaz_c |
---|
102 | elseif(igas.eq.igas_He)then |
---|
103 | cpp_c = cpp_c + 5.19*gfrac(igas)*4.003/mugaz_c |
---|
104 | elseif(igas.eq.igas_H2O)then |
---|
105 | cpp_c = cpp_c + 1.864*gfrac(igas)*18.02/mugaz_c |
---|
106 | elseif(igas.eq.igas_SO2)then |
---|
107 | cpp_c = cpp_c + 0.64*gfrac(igas)*64.066/mugaz_c |
---|
108 | elseif(igas.eq.igas_H2S)then |
---|
109 | cpp_c = cpp_c + 1.003*gfrac(igas)*34.08/mugaz_c ! from wikipedia... |
---|
110 | elseif(igas.eq.igas_CH4)then |
---|
111 | cpp_c = cpp_c + 2.226*gfrac(igas)*16.04/mugaz_c |
---|
112 | elseif(igas.eq.igas_NH3)then |
---|
113 | cpp_c = cpp_c + 2.175*gfrac(igas)*17.03/mugaz_c |
---|
114 | print*,'WARNING, cpp for NH3 may be for liquid' |
---|
115 | elseif(igas.eq.igas_C2H6)then |
---|
116 | ! C2H6 |
---|
117 | ! http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=28 |
---|
118 | cpp_c = cpp_c + 1.763*gfrac(igas)*30.07/mugaz_c |
---|
119 | elseif(igas.eq.igas_C2H2)then |
---|
120 | ! C2H2 |
---|
121 | ! http://encyclopedia.airliquide.com/Encyclopedia.asp?GasID=1 |
---|
122 | cpp_c = cpp_c + 1.575*gfrac(igas)*26.04/mugaz_c |
---|
123 | !!!!! MODIF GG JAN 2019 (check source values !!) |
---|
124 | elseif(igas.eq.igas_CO)then |
---|
125 | cpp_c = cpp_c + 1.0425*gfrac(igas)*28.01/mugaz_c |
---|
126 | elseif(igas.eq.igas_OCS)then |
---|
127 | cpp_c = cpp_c + 0.6909*gfrac(igas)*60.07/mugaz_c |
---|
128 | elseif(igas.eq.igas_HCl)then |
---|
129 | cpp_c = cpp_c + 1.7087*gfrac(igas)*36.46/mugaz_c |
---|
130 | elseif(igas.eq.igas_HF)then |
---|
131 | cpp_c = cpp_c + 1.4553*gfrac(igas)*20.01/mugaz_c |
---|
132 | else |
---|
133 | if (is_master) then |
---|
134 | print*,'Error in calc_cpp_mugaz: Gas species not recognised!' |
---|
135 | endif |
---|
136 | call abort_physic(myname,'Gas species not recognised!',1) |
---|
137 | endif |
---|
138 | endif |
---|
139 | |
---|
140 | enddo |
---|
141 | |
---|
142 | |
---|
143 | |
---|
144 | |
---|
145 | |
---|
146 | cpp_c = 1000.0*cpp_c |
---|
147 | |
---|
148 | if (is_master) then |
---|
149 | print*,'Cp in calc_cpp_mugaz is ',cpp_c,'J kg^-1 K^-1' |
---|
150 | print*,'Mg in calc_cpp_mugaz is ',mugaz_c,'amu' |
---|
151 | endif |
---|
152 | |
---|
153 | if(((abs(1.-cpp/cpp_c).gt.1.e-6) .or. & |
---|
154 | (abs(1.-mugaz/mugaz_c).gt.1.e-6)).and. is_master ) then |
---|
155 | ! Ehouarn: tolerate a small mismatch between computed/stored values |
---|
156 | print*,'--> Values do not match with the predefined one ! (',cpp,',',mugaz,')' |
---|
157 | print*,' Because cp varies with temperature and that some gases may not appear in gases.def,' |
---|
158 | print*,' a small discrepancy might be completely normal.' |
---|
159 | print*,' But you might want to check that!' |
---|
160 | print*,' If you want to use the values calculated here, adjust cpp / mugaz in the dynamics via newstart (3d)' |
---|
161 | print*,' or use cpp_mugaz_mode=2 (if you are in 1d).' |
---|
162 | endif |
---|
163 | |
---|
164 | if (cpp_mugaz_mode==2) then |
---|
165 | if (is_master) print*,'*** cpp_mugaz_mode==2, so setting cpp & mugaz to computations in calc_cpp_mugaz.' |
---|
166 | mugaz = mugaz_c |
---|
167 | cpp = cpp_c |
---|
168 | else |
---|
169 | if (is_master) print*,'*** Leaving cpp & mugaz equal to predefined values' |
---|
170 | if (is_master) print*,'(either from dynamics (cpp_mugaz_mode=0) or callfis (cpp_mugaz_mode=1)).' |
---|
171 | endif |
---|
172 | |
---|
173 | |
---|
174 | end subroutine calc_cpp_mugaz |
---|