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revision 1.1 by jmc, Wed Oct 9 01:05:03 2002 UTC revision 1.11 by jmc, Wed Feb 2 19:56:49 2005 UTC
# Line 1  Line 1 
1  # AIM physics package parameters:  # AIM physics package parameters:
2    
3    C--   AIM interface parameter (namelist AIM_PARAMS):
4    #     aim_useFMsurfBC :: select surface B.C. from Franco Molteni
5    #     aim_useMMsurfFc :: select Monthly Mean surface forcing (e.g., NCEP)
6    #     aim_surfPotTemp :: surf.Temp input file is in Pot.Temp (aim_useMMsurfFc)
7    #     aim_energPrecip :: account for energy of precipitation (snow & rain temp)
8    #     aim_splitSIOsFx :: compute separately Sea-Ice & Ocean surf. Flux
9    #     aim_LandFile :: file name for Land fraction [0-1]
10    #     aim_MMsufx   :: sufix for all Monthly Mean surface forcing files
11    #     aim_MMsufxLength :: Length of sufix (Monthly Mean surf. forc. files)
12    #     aim_albFile  :: file name for Albedo input file   (F.M. surfBC)
13    #     aim_vegFile  :: file name for vegetation fraction (F.M. surfBC)
14    #     aim_sstFile  :: file name for  Sea.Surf.Temp      (F.M. surfBC)
15    #     aim_lstFile  :: file name for Land.Surf.Temp      (F.M. surfBC)
16    #     aim_oiceFile :: file name for Sea Ice fraction    (F.M. surfBC)
17    #     aim_snowFile :: file name for Snow depth          (F.M. surfBC)
18    #     aim_swcFile  :: file name for Soil Water content  (F.M. surfBC)
19    #     aim_dragStrato :: stratospheric-drag damping time scale (s)
20    #     aim_clrSkyDiag :: compute clear-sky radiation for diagnostics
21    #     aim_taveFreq :: Frequency^-1 for time-average output (s)
22    #     aim_diagFreq :: Frequency^-1 for diagnostic output (s)
23    #     aim_tendFreq :: Frequency^-1 for tendencies output (s)
24     &AIM_PARAMS
25    #  aim_useFMsurfBC=.FALSE.,
26    #  aim_useMMsurfFc=.TRUE.,
27    #  aim_surfPotTemp=.TRUE.,
28       aim_energPrecip=.TRUE.,
29       aim_splitSIOsFx=.TRUE.,
30       aim_LandFile= 'landFrc.2f2.bin',
31       aim_albFile = 'albedo.FM.bin',
32       aim_vegFile = 'vegetFrc.FM.bin',
33       aim_sstFile = 'seaSurfT.FM.bin',
34       aim_lstFile = 'lndSurfT.2f2.bin',
35       aim_oiceFile= 'seaIce.2f2.bin',
36       aim_snowFile= 'snowDepth.FM.bin',
37       aim_swcFile = 'soilMoist.FM.bin',
38       aim_dragStrato= 2592000.,
39    #  aim_clrSkyDiag=.TRUE.,
40    #  aim_diagFreq=3600.,
41     &
42    
43  #--   Physical constants  #--   Physical constants
44  #      P0   = reference pressure  #       P0    = reference pressure                 [Pa=N/m2]
45  #      GG   = gravity accel.  #       GG    = gravity accel.                     [m/s2]
46  #      RD   = gas constant for dry air  #       RD    = gas constant for dry air           [J/kg/K]
47  #      CP   = specific heat at constant pressure  #       CP    = specific heat at constant pressure [J/kg/K]
48  #      ALHC = latent heat of condensation  #       ALHC  = latent heat of condensation        [J/g]
49  #      SBC  = Stefan-Boltzmann constant              #       ALHF  = latent heat of freezing            [J/g]
50    #       SBC   = Stefan-Boltzmann constant
51    #     rainCP  = heat capacity of liquid water      [J/g/K]
52    #     tFreeze = freezing temperature of pure water [K]
53    
54  #--   Constants for forcing fields (namelist AIM_PAR_FOR):  #--   Constants for forcing fields (namelist AIM_PAR_FOR):
55  #      SOLC   = Solar constant (area averaged) in W/m^2  #      SOLC   = Solar constant (area averaged) in W/m^2
56  #      ALBSEA = Albedo over sea  #      ALBSEA = Albedo over sea
57  #      ALBICE = Albedo over sea ice (for ice fraction = 1)  #      ALBICE = Albedo over sea ice (for ice fraction = 1)
58  #      ALBSN  = Albedo over snow (for snow depth > SDALB)  #      ALBSN  = Albedo over snow (for snow depth > SDALB)
59  #      SDALB  = Snow depth corresponding to maximum albedo  #      SDALB  = Snow depth (mm water) corresponding to maximum albedo
60  #      SWCAP  = Soil wetness capacity  #      SWCAP  = Soil wetness at field capacity (volume fraction)
61  #      SWWIL  = Soil wetness at wilting point  #      SWWIL  = Soil wetness at wilting point  (volume fraction)
62    #      hSnowWetness :: snow depth (m) corresponding to maximum wetness
63   &AIM_PAR_FOR   &AIM_PAR_FOR
64   &   &
65    
66  #--   Constants for surface fluxes (namelist AIM_PAR_SFL):  #--   Constants for surface fluxes (namelist AIM_PAR_SFL):
67  #      FWIND0 = ratio of near-sfc wind to lowest-level wind  #      FWIND0 = ratio of near-sfc wind to lowest-level wind
68  #      FTEMP0 = weight for near-sfc temperature extrapolation (0-1) :  #      FTEMP0 = weight for near-sfc temperature extrapolation (0-1) :
69  #               1 : linear extrapolation from two lowest levels  #               1 : linear extrapolation from two lowest levels
# Line 32  Line 76 
76  #      CHL    = heat exchange coefficient over land  #      CHL    = heat exchange coefficient over land
77  #      CHS    = heat exchange coefficient over sea  #      CHS    = heat exchange coefficient over sea
78  #      VGUST  = wind speed for sub-grid-scale gusts  #      VGUST  = wind speed for sub-grid-scale gusts
79  #      SWMAX  = Soil wetness (in mm) corresp. to potential evapotranspiration    #      CTDAY  = daily-cycle correction (dTskin/dSSRad)
80    #      DTHETA = Potential temp. gradient for stability correction
81    #      dTstab = potential temp. increment for stability function derivative
82    #      FSTAB  = Amplitude of stability correction (fraction)
83    #      HDRAG  = Height scale for orographic correction
84    #      FHDRAG = Amplitude of orographic correction (fraction)
85   &AIM_PAR_SFL   &AIM_PAR_SFL
86    FWIND0 = 0.42,  #  FTEMP0 = 0.,
87    FTEMP0 = 0.,  #  FHUM0  = 0.,
   CHL  = 2.0e-3,  
   CHS  = 0.9e-3,  
   VGUST  = 4.,  
88   &   &
89    
90  #--   Convection constants (namelist AIM_PAR_CNV):  #--   Convection constants (namelist AIM_PAR_CNV):
91  #      RHBL   = relative hum. threshold in the boundary (lowest) layer  #      PSMIN  = minimum (norm.) sfc. pressure for the occurrence of convection
92  #      TRCNV  = time of relaxation (in hours) towards neutral equilibrium  #      TRCNV  = time of relaxation (in hours) towards reference state
93    #      QBL    = specific hum. threshold in the boundary layer
94    #      RHBL   = relative hum. threshold in the boundary layer
95    #      RHIL   = rel. hum. threshold in intermed. layers for secondary mass flux
96  #      ENTMAX = max. entrainment as a fraction of cloud-base mass flux  #      ENTMAX = max. entrainment as a fraction of cloud-base mass flux
97    #      SMF    = ratio between secondary and primary mass flux at cloud-base
98   &AIM_PAR_CNV   &AIM_PAR_CNV
99   &   &
100    
101  #--   Constants for large-scale condendation (namelist AIM_PAR_LSC):  #--   Constants for large-scale condensation (namelist AIM_PAR_LSC):
102  #      RHLSC  = Relative humidity threshold  #      TRLSC  = Relaxation time (in hours) for specific humidity
103  #      TRLSC  = Relaxation time (in hours) for supersat. specific humidity  #      RHLSC  = Maximum relative humidity threshold (at sigma=1)
104    #      DRHLSC = Vertical range of relative humidity threshold
105    #      QSMAX  = used to define the maximum latent heat release
106   &AIM_PAR_LSC   &AIM_PAR_LSC
107   &   &
108    
109  #--   Radiation constants (namelist AIM_PAR_RAD):  #--   Radiation constants (namelist AIM_PAR_RAD):
 #      ABSSW  = shortwave absorptivity for dry air (per dp = 10^5 Pa)  
 #      ABSLW  =  longwave absorptivity for dry air (per dp = 10^5 Pa)  
 #      ABWSW  = shortwave absorptivity for water vapour (per dq = 1 g/kg)  
 #      ABWLW  =  longwave absorptivity for water vapour (per dq = 1 g/kg)  
 #      ABCSW  = shortwave absorptivity for cloud fraction  
 #      ABCLW  =  longwave absorptivity for cloud fraction  
 #      EPSSW  = fraction of incoming solar radiation absorbed by ozone  
 #      EPSLW  = fraction of surface LW radiation emitted directly to space  
 #      ALBCL  = cloud albedo (for cloud cover = 1)  
110  #      RHCL1  = relative hum. corresponding to cloud cover = 0  #      RHCL1  = relative hum. corresponding to cloud cover = 0
111  #      RHCL2  = relative hum. corresponding to cloud cover = 1  #      RHCL2  = relative hum. corresponding to cloud cover = 1
112  #      QACL   = specific hum. threshold for cloud cover  #      QACL1  = specific hum. threshold for cloud cover in the upper troposphere
113    #      QACL2  = specific hum. threshold for cloud cover in the upper troposphere
114    #      ALBCL  = cloud albedo (for cloud cover = 1)
115    #      EPSSW  = fraction of incoming solar radiation absorbed by ozone
116    #      EPSLW  = fraction of surface LW radiation emitted directly to space
117    #      EMISFC = longwave surface emissivity
118    #--:            shortwave absorptivities (for dp = 10^5 Pa) :
119    #      ABSDRY = abs. of dry air      (visible band)
120    #      ABSAER = abs. of aerosols     (visible band)
121    #      ABSWV1 = abs. of water vapour (visible band, for dq = 1 g/kg)
122    #      ABSWV2 = abs. of water vapour (near IR band, for dq = 1 g/kg)
123    #      ABSCL1 = abs. of clouds       (visible band, constant term)
124    #      ABSCL2 = abs. of clouds       (visible band, for dw = 1 g/kg)
125    #--:            longwave absorptivities (per dp = 10^5 Pa) :
126    #      ABLWIN = abs. of air in "window" band
127    #      ABLCO2 = abs. of air in CO2 band
128    #      ABLWV1 = abs. of water vapour in H2O band 1 (weak),   for dq = 1 g/kg
129    #      ABLWV2 = abs. of water vapour in H2O band 2 (strong), for dq = 1 g/kg
130    #      ABLCL1 = abs. of clouds       in "window" band,       constant term
131    #      ABLCL2 = abs. of clouds       in "window" band,       for dw = 1 g/kg
132   &AIM_PAR_RAD   &AIM_PAR_RAD
    ABWLW = 0.60,  
    ALBCL = 0.34,  
    RHCL1 = 0.50,  
    RHCL2 = 0.90,  
    QACL  = 0.50,  
133   &   &
134    
135  #--   Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI):  #--   Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI):
 #      TRVDI  = relaxation time (in hours) for moisture diffusion  
136  #      TRSHC  = relaxation time (in hours) for shallow convection  #      TRSHC  = relaxation time (in hours) for shallow convection
137    #      TRVDI  = relaxation time (in hours) for moisture diffusion
138    #      TRVDS  = relaxation time (in hours) for super-adiab. conditions
139    #      RHGRAD = maximum gradient of relative humidity (d_RH/d_sigma)
140    #      SEGRAD = minimum gradient of dry static energy (d_DSE/d_phi)
141   &AIM_PAR_VDI   &AIM_PAR_VDI
    TRVDI = 48.,  
    TRSHC = 12.,  
142   &   &
143    
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