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cd1b9754e4 Jean*0001 # AIM physics package parameters:
0002
f925ef2945 Jean*0003 C-- AIM interface parameter (namelist AIM_PARAMS):
0004 # aim_useFMsurfBC :: select surface B.C. from Franco Molteni
0005 # aim_useMMsurfFc :: select Monthly Mean surface forcing (e.g., NCEP)
0006 # aim_surfPotTemp :: surf.Temp input file is in Pot.Temp (aim_useMMsurfFc)
0953a93f7b Jean*0007 # aim_energPrecip :: account for energy of precipitation (snow & rain temp)
0008 # aim_splitSIOsFx :: compute separately Sea-Ice & Ocean surf. Flux
0009 # aim_LandFile :: file name for Land fraction [0-1]
f925ef2945 Jean*0010 # aim_MMsufx :: sufix for all Monthly Mean surface forcing files
0011 # aim_MMsufxLength :: Length of sufix (Monthly Mean surf. forc. files)
0012 # aim_albFile :: file name for Albedo input file (F.M. surfBC)
0013 # aim_vegFile :: file name for vegetation fraction (F.M. surfBC)
0014 # aim_sstFile :: file name for Sea.Surf.Temp (F.M. surfBC)
0015 # aim_lstFile :: file name for Land.Surf.Temp (F.M. surfBC)
0016 # aim_oiceFile :: file name for Sea Ice fraction (F.M. surfBC)
0017 # aim_snowFile :: file name for Snow depth (F.M. surfBC)
0018 # aim_swcFile :: file name for Soil Water content (F.M. surfBC)
0019 # aim_dragStrato :: stratospheric-drag damping time scale (s)
0953a93f7b Jean*0020 # aim_clrSkyDiag :: compute clear-sky radiation for diagnostics
0021 # aim_taveFreq :: Frequency^-1 for time-average output (s)
f925ef2945 Jean*0022 # aim_diagFreq :: Frequency^-1 for diagnostic output (s)
0023 # aim_tendFreq :: Frequency^-1 for tendencies output (s)
0024 &AIM_PARAMS
0025 aim_useFMsurfBC=.FALSE.,
0026 aim_useMMsurfFc=.FALSE.,
0027 &
0028
cd1b9754e4 Jean*0029 #-- Physical constants
0953a93f7b Jean*0030 # P0 = reference pressure [Pa=N/m2]
0031 # GG = gravity accel. [m/s2]
0032 # RD = gas constant for dry air [J/kg/K]
0033 # CP = specific heat at constant pressure [J/kg/K]
0034 # ALHC = latent heat of condensation [J/g]
0035 # ALHF = latent heat of freezing [J/g]
0036 # SBC = Stefan-Boltzmann constant
0037 # rainCP = heat capacity of liquid water [J/g/K]
0038 # tFreeze = freezing temperature of pure water [K]
cd1b9754e4 Jean*0039
0040 #-- Constants for forcing fields (namelist AIM_PAR_FOR):
0041 # SOLC = Solar constant (area averaged) in W/m^2
0042 # ALBSEA = Albedo over sea
0043 # ALBICE = Albedo over sea ice (for ice fraction = 1)
0044 # ALBSN = Albedo over snow (for snow depth > SDALB)
f925ef2945 Jean*0045 # SDALB = Snow depth (mm water) corresponding to maximum albedo
0046 # SWCAP = Soil wetness at field capacity (volume fraction)
0047 # SWWIL = Soil wetness at wilting point (volume fraction)
0953a93f7b Jean*0048 # hSnowWetness :: snow depth (m) corresponding to maximum wetness
cd1b9754e4 Jean*0049 &AIM_PAR_FOR
0050 &
0051
0953a93f7b Jean*0052 #-- Constants for surface fluxes (namelist AIM_PAR_SFL):
cd1b9754e4 Jean*0053 # FWIND0 = ratio of near-sfc wind to lowest-level wind
0054 # FTEMP0 = weight for near-sfc temperature extrapolation (0-1) :
0055 # 1 : linear extrapolation from two lowest levels
0056 # 0 : constant potential temperature ( = lowest level)
0057 # FHUM0 = weight for near-sfc specific humidity extrapolation (0-1) :
0058 # 1 : extrap. with constant relative hum. ( = lowest level)
0059 # 0 : constant specific hum. ( = lowest level)
0060 # CDL = drag coefficient for momentum over land
0061 # CDS = drag coefficient for momentum over sea
0062 # CHL = heat exchange coefficient over land
0063 # CHS = heat exchange coefficient over sea
0064 # VGUST = wind speed for sub-grid-scale gusts
f925ef2945 Jean*0065 # CTDAY = daily-cycle correction (dTskin/dSSRad)
0066 # DTHETA = Potential temp. gradient for stability correction
0953a93f7b Jean*0067 # dTstab = potential temp. increment for stability function derivative
f925ef2945 Jean*0068 # FSTAB = Amplitude of stability correction (fraction)
0069 # HDRAG = Height scale for orographic correction
0070 # FHDRAG = Amplitude of orographic correction (fraction)
cd1b9754e4 Jean*0071 &AIM_PAR_SFL
0072 &
0073
0074 #-- Convection constants (namelist AIM_PAR_CNV):
f925ef2945 Jean*0075 # PSMIN = minimum (norm.) sfc. pressure for the occurrence of convection
0076 # TRCNV = time of relaxation (in hours) towards reference state
0077 # QBL = specific hum. threshold in the boundary layer
0078 # RHBL = relative hum. threshold in the boundary layer
0079 # RHIL = rel. hum. threshold in intermed. layers for secondary mass flux
cd1b9754e4 Jean*0080 # ENTMAX = max. entrainment as a fraction of cloud-base mass flux
f925ef2945 Jean*0081 # SMF = ratio between secondary and primary mass flux at cloud-base
cd1b9754e4 Jean*0082 &AIM_PAR_CNV
0083 &
0084
0953a93f7b Jean*0085 #-- Constants for large-scale condensation (namelist AIM_PAR_LSC):
f925ef2945 Jean*0086 # TRLSC = Relaxation time (in hours) for specific humidity
0087 # RHLSC = Maximum relative humidity threshold (at sigma=1)
0088 # DRHLSC = Vertical range of relative humidity threshold
0089 # QSMAX = used to define the maximum latent heat release
cd1b9754e4 Jean*0090 &AIM_PAR_LSC
0091 &
0092
0093 #-- Radiation constants (namelist AIM_PAR_RAD):
0094 # RHCL1 = relative hum. corresponding to cloud cover = 0
0095 # RHCL2 = relative hum. corresponding to cloud cover = 1
f925ef2945 Jean*0096 # QACL1 = specific hum. threshold for cloud cover in the upper troposphere
0097 # QACL2 = specific hum. threshold for cloud cover in the upper troposphere
0098 # ALBCL = cloud albedo (for cloud cover = 1)
0099 # EPSSW = fraction of incoming solar radiation absorbed by ozone
0100 # EPSLW = fraction of surface LW radiation emitted directly to space
0101 # EMISFC = longwave surface emissivity
0102 #--: shortwave absorptivities (for dp = 10^5 Pa) :
0103 # ABSDRY = abs. of dry air (visible band)
0104 # ABSAER = abs. of aerosols (visible band)
0105 # ABSWV1 = abs. of water vapour (visible band, for dq = 1 g/kg)
0106 # ABSWV2 = abs. of water vapour (near IR band, for dq = 1 g/kg)
0107 # ABSCL1 = abs. of clouds (visible band, constant term)
0108 # ABSCL2 = abs. of clouds (visible band, for dw = 1 g/kg)
0109 #--: longwave absorptivities (per dp = 10^5 Pa) :
0110 # ABLWIN = abs. of air in "window" band
0111 # ABLCO2 = abs. of air in CO2 band
0112 # ABLWV1 = abs. of water vapour in H2O band 1 (weak), for dq = 1 g/kg
0113 # ABLWV2 = abs. of water vapour in H2O band 2 (strong), for dq = 1 g/kg
0114 # ABLCL1 = abs. of clouds in "window" band, constant term
0115 # ABLCL2 = abs. of clouds in "window" band, for dw = 1 g/kg
cd1b9754e4 Jean*0116 &AIM_PAR_RAD
0117 &
0118
0953a93f7b Jean*0119 #-- Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI):
cd1b9754e4 Jean*0120 # TRSHC = relaxation time (in hours) for shallow convection
f925ef2945 Jean*0121 # TRVDI = relaxation time (in hours) for moisture diffusion
0122 # TRVDS = relaxation time (in hours) for super-adiab. conditions
0123 # RHGRAD = maximum gradient of relative humidity (d_RH/d_sigma)
0124 # SEGRAD = minimum gradient of dry static energy (d_DSE/d_phi)
cd1b9754e4 Jean*0125 &AIM_PAR_VDI
0126 &
0127
