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module_model_constants.F @ 29

Last change on this file since 29 was 17, checked in by aslmd, 15 years ago
spiga:mineur
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1	!WRF:MODEL_LAYER:CONSTANTS
2	!
3
4	MODULE module_model_constants
5
6	! 2. Following are constants for use in defining real number bounds.
7
8	! A really small number.
9
10	REAL , PARAMETER :: epsilon = 1.E-15
11
12	! 4. Following is information related to the physical constants.
13
14	! These are the physical constants used within the model.
15
16	! JM NOTE -- can we name this grav instead?
17	REAL , PARAMETER :: g = 3.72 ! acceleration due to gravity (m {s}^-2)
18
19	#if ( NMM_CORE == 1 )
20	REAL , PARAMETER :: r_d = 192.
21	REAL , PARAMETER :: cp = 844.6
22	#else
23	REAL , PARAMETER :: r_d = 192.
24	REAL , PARAMETER :: cp = 844.6
25	#endif
26
27	REAL , PARAMETER :: r_v = 461.6
28	REAL , PARAMETER :: cv = cp-r_d
29	REAL , PARAMETER :: cpv = 4.4*r_v
30	REAL , PARAMETER :: cvv = cpv-r_v
31	REAL , PARAMETER :: cvpm = -cv/cp
32	REAL , PARAMETER :: cliq = 4190.
33	REAL , PARAMETER :: cice = 2106.
34	REAL , PARAMETER :: psat = 610.78
35	REAL , PARAMETER :: rcv = r_d/cv
36	REAL , PARAMETER :: rcp = r_d/cp
37	REAL , PARAMETER :: rovg = r_d/g
38	REAL , PARAMETER :: c2 = cp * rcv
39	real , parameter :: mwdry = 43.49 ! molecular weight of dry air (g/mole)
40
41	REAL , PARAMETER :: p1000mb = 610.
42	REAL , PARAMETER :: t0 = 220.
43	REAL , PARAMETER :: p0 = 610.
44	REAL , PARAMETER :: cpovcv = cp/(cp-r_d)
45	REAL , PARAMETER :: cvovcp = 1./cpovcv
46	REAL , PARAMETER :: rvovrd = r_v/r_d
47
48	REAL , PARAMETER :: reradius = 1./3397200.
49
50	!-------------------------------
51	!****MARS
52	! here some LMD stuff
53	! >> TODO: possible modification with startfi.nc values ?
54	REAL , PARAMETER :: wdaysec = 88800. ! duree du sol (s) ~88775 s
55	REAL , PARAMETER :: wmugaz = 43.49 ! Masse molaire de l'atm (g.mol-1) ~43.49
56	REAL , PARAMETER :: womeg = 7.0721E-5 ! omega (rad.s-1)
57	REAL , PARAMETER :: wyear_day = 669 ! Duree de l'annee (sols) ~668.6
58	REAL , PARAMETER :: wperiheli = 206.66 ! Dist.min. soleil-mars (Mkm) ~206.66
59	REAL , PARAMETER :: waphelie = 249.22 ! Dist.max. soleil-mars (Mkm) ~249.22
60	REAL , PARAMETER :: wperi_day = 485. ! Date du perihelie (sols depuis printemps)
61	REAL , PARAMETER :: wobliquit = 25.2 ! Obliquite de la planete (deg) ~25.2
62	REAL , PARAMETER :: wz0 = 1.e-2 ! surface roughness (m) ~0.01
63	REAL , PARAMETER :: wlmixmin = 30 ! longueur de melange ~100
64	REAL , PARAMETER :: wemin_turb = 1.e-6 ! energie minimale ~1.e-8
65	REAL , PARAMETER :: wemissiv = 0.95 ! Emissivite du sol martien ~.95
66	REAL , PARAMETER :: wemissiceN = 0.95 ! Emissivite calotte nord
67	REAL , PARAMETER :: wemissiceS = 0.95 ! Emissivite calotte sud
68	REAL , PARAMETER :: walbediceN = 0.65 ! Albedo calotte nord !0.5
69	REAL , PARAMETER :: walbediceS = 0.65 ! Albedo calotte sud !0.5
70	REAL , PARAMETER :: wiceradiusN = 100.e-6 ! mean scat radius of CO2 snow (north)
71	REAL , PARAMETER :: wiceradiusS = 100.e-6 ! mean scat radius of CO2 snow (south)
72	REAL , PARAMETER :: wdtemisiceN = 0.4 ! time scale for snow metamorphism (north) !2
73	REAL , PARAMETER :: wdtemisiceS = 0.4 ! time scale for snow metamorphism (south) !2
74	!
75	!-------------------------------
76
77
78
79	REAL , PARAMETER :: asselin = .025
80	! REAL , PARAMETER :: asselin = .0
81	REAL , PARAMETER :: cb = 25.
82
83	REAL , PARAMETER :: XLV0 = 3.15E6
84	REAL , PARAMETER :: XLV1 = 2370.
85	REAL , PARAMETER :: XLS0 = 2.905E6
86	REAL , PARAMETER :: XLS1 = 259.532
87
88	REAL , PARAMETER :: XLS = 2.85E6
89	REAL , PARAMETER :: XLV = 2.5E6
90	REAL , PARAMETER :: XLF = 3.50E5
91
92	REAL , PARAMETER :: rhowater = 1000.
93	REAL , PARAMETER :: rhosnow = 100.
94	REAL , PARAMETER :: rhoair0 = 0.02
95
96	REAL , PARAMETER :: DEGRAD = 3.1415926/180.
97	REAL , PARAMETER :: DPD = 360./669.
98
99	REAL , PARAMETER :: SVP1=0.6112
100	REAL , PARAMETER :: SVP2=17.67
101	REAL , PARAMETER :: SVP3=29.65
102	REAL , PARAMETER :: SVPT0=273.15
103	REAL , PARAMETER :: EP_1=R_v/R_d-1.
104	REAL , PARAMETER :: EP_2=R_d/R_v
105	REAL , PARAMETER :: KARMAN=0.4
106	REAL , PARAMETER :: EOMEG=7.0721E-5
107	REAL , PARAMETER :: STBOLT=5.67051E-8
108
109	REAL , PARAMETER :: prandtl = 1./3.0
110	! constants for w-damping option
111	REAL , PARAMETER :: w_alpha = 0.3 ! strength m/s/s
112	REAL , PARAMETER :: w_beta = 1.0 ! activation cfl number
113
114	REAL , PARAMETER :: pq0=379.90516
115	REAL , PARAMETER :: epsq2=0.2
116	! REAL , PARAMETER :: epsq2=0.02
117	REAL , PARAMETER :: a2=17.2693882
118	REAL , PARAMETER :: a3=273.16
119	REAL , PARAMETER :: a4=35.86
120	REAL , PARAMETER :: epsq=1.e-12
121	REAL , PARAMETER :: p608=rvovrd-1.
122	!#if ( NMM_CORE == 1 )
123	REAL , PARAMETER :: climit=1.e-20
124	REAL , PARAMETER :: cm1=2937.4
125	REAL , PARAMETER :: cm2=4.9283
126	REAL , PARAMETER :: cm3=23.5518
127	! REAL , PARAMETER :: defc=8.0
128	! REAL , PARAMETER :: defm=32.0
129	REAL , PARAMETER :: defc=0.0
130	REAL , PARAMETER :: defm=99999.0
131	REAL , PARAMETER :: epsfc=1./1.05
132	REAL , PARAMETER :: epswet=0.0
133	REAL , PARAMETER :: fcdif=1./3.
134	REAL , PARAMETER :: fcm=0.00003
135	REAL , PARAMETER :: gma=-r_d(1.-rcp)0.5
136	REAL , PARAMETER :: p400=40000.0
137	REAL , PARAMETER :: phitp=15000.0
138	REAL , PARAMETER :: pi2=2.*3.1415926
139	REAL , PARAMETER :: plbtm=105000.0
140	REAL , PARAMETER :: plomd=64200.0
141	REAL , PARAMETER :: pmdhi=35000.0
142	REAL , PARAMETER :: q2ini=0.50
143	REAL , PARAMETER :: rfcp=0.25/cp
144	REAL , PARAMETER :: rhcrit_land=0.75
145	REAL , PARAMETER :: rhcrit_sea=0.80
146	REAL , PARAMETER :: rlag=14.8125
147	REAL , PARAMETER :: rlx=0.90
148	REAL , PARAMETER :: scq2=50.0
149	REAL , PARAMETER :: slopht=0.001
150	REAL , PARAMETER :: tlc=2.*0.703972477
151	REAL , PARAMETER :: wa=0.15
152	REAL , PARAMETER :: wght=0.35
153	REAL , PARAMETER :: wpc=0.075
154	REAL , PARAMETER :: z0land=0.10
155	REAL , PARAMETER :: z0max=0.008
156	REAL , PARAMETER :: z0sea=0.001
157	!#endif
158
159
160	! Earth
161
162	! The value for P2SI must be set to 1.0 for Earth
163	! Although, now we may not need this declaration here (see above)
164	!REAL , PARAMETER :: P2SI = 1.0
165
166	! Orbital constants:
167
168	INTEGER , PARAMETER :: PLANET_YEAR = 365
169	REAL , PARAMETER :: OBLIQUITY = 23.5
170	REAL , PARAMETER :: ECCENTRICITY = 0.014
171	REAL , PARAMETER :: SEMIMAJORAXIS = 1.0 ! In AU
172	! Don't know the following values, so we'll fake them for now
173	REAL , PARAMETER :: zero_date = 0.0 ! Time of perihelion passage
174	! Fraction into the year (from perhelion) of the
175	! occurrence of the Northern Spring Equinox
176	REAL , PARAMETER :: EQUINOX_FRACTION= 0.0
177
178	CONTAINS
179	SUBROUTINE init_module_model_constants
180	END SUBROUTINE init_module_model_constants
181	END MODULE module_model_constants

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