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# AIM physics package parameters: 
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C AIM interface parameter (namelist AIM_PARAMS): 
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# aim_useFMsurfBC :: select surface B.C. from Franco Molteni 
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# aim_useMMsurfFc :: select Monthly Mean surface forcing (e.g., NCEP) 
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# aim_surfPotTemp :: surf.Temp input file is in Pot.Temp (aim_useMMsurfFc) 
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# aim_energPrecip :: account for energy of precipitation (snow & rain temp) 
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# aim_splitSIOsFx :: compute separately SeaIce & Ocean surf. Flux 
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# aim_LandFile :: file name for Land fraction [01] 
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# aim_MMsufx :: sufix for all Monthly Mean surface forcing files 
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# aim_MMsufxLength :: Length of sufix (Monthly Mean surf. forc. files) 
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# aim_albFile :: file name for Albedo input file (F.M. surfBC) 
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# aim_vegFile :: file name for vegetation fraction (F.M. surfBC) 
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# aim_sstFile :: file name for Sea.Surf.Temp (F.M. surfBC) 
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# aim_lstFile :: file name for Land.Surf.Temp (F.M. surfBC) 
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# aim_oiceFile :: file name for Sea Ice fraction (F.M. surfBC) 
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# aim_snowFile :: file name for Snow depth (F.M. surfBC) 
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# aim_swcFile :: file name for Soil Water content (F.M. surfBC) 
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# aim_dragStrato :: stratosphericdrag damping time scale (s) 
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# aim_clrSkyDiag :: compute clearsky radiation for diagnostics 
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# aim_taveFreq :: Frequency^1 for timeaverage output (s) 
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# aim_diagFreq :: Frequency^1 for diagnostic output (s) 
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# aim_tendFreq :: Frequency^1 for tendencies output (s) 
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&AIM_PARAMS 
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# aim_useFMsurfBC=.FALSE., 
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# aim_useMMsurfFc=.TRUE., 
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# aim_surfPotTemp=.TRUE., 
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aim_energPrecip=.TRUE., 
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aim_splitSIOsFx=.TRUE., 
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aim_LandFile= 'landFrc.2f2.bin', 
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aim_albFile = 'albedo.FM.bin', 
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aim_vegFile = 'vegetFrc.FM.bin', 
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aim_sstFile = 'seaSurfT.FM.bin', 
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aim_lstFile = 'lndSurfT.2f2.bin', 
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aim_oiceFile= 'seaIce.2f2.bin', 
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aim_snowFile= 'snowDepth.FM.bin', 
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aim_swcFile = 'soilMoist.FM.bin', 
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aim_dragStrato= 2592000., 
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# aim_clrSkyDiag=.TRUE., 
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# aim_diagFreq=3600., 
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& 
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# Physical constants 
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# P0 = reference pressure [Pa=N/m2] 
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# GG = gravity accel. [m/s2] 
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# RD = gas constant for dry air [J/kg/K] 
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# CP = specific heat at constant pressure [J/kg/K] 
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# ALHC = latent heat of condensation [J/g] 
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# ALHF = latent heat of freezing [J/g] 
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# SBC = StefanBoltzmann constant 
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# rainCP = heat capacity of liquid water [J/g/K] 
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# tFreeze = freezing temperature of pure water [K] 
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# Constants for forcing fields (namelist AIM_PAR_FOR): 
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# SOLC = Solar constant (area averaged) in W/m^2 
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# ALBSEA = Albedo over sea 
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# ALBICE = Albedo over sea ice (for ice fraction = 1) 
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# ALBSN = Albedo over snow (for snow depth > SDALB) 
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# SDALB = Snow depth (mm water) corresponding to maximum albedo 
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# SWCAP = Soil wetness at field capacity (volume fraction) 
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# SWWIL = Soil wetness at wilting point (volume fraction) 
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# hSnowWetness :: snow depth (m) corresponding to maximum wetness 
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&AIM_PAR_FOR 
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& 
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# Constants for surface fluxes (namelist AIM_PAR_SFL): 
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# FWIND0 = ratio of nearsfc wind to lowestlevel wind 
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# FTEMP0 = weight for nearsfc temperature extrapolation (01) : 
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# 1 : linear extrapolation from two lowest levels 
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# 0 : constant potential temperature ( = lowest level) 
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# FHUM0 = weight for nearsfc specific humidity extrapolation (01) : 
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# 1 : extrap. with constant relative hum. ( = lowest level) 
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# 0 : constant specific hum. ( = lowest level) 
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# CDL = drag coefficient for momentum over land 
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# CDS = drag coefficient for momentum over sea 
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# CHL = heat exchange coefficient over land 
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# CHS = heat exchange coefficient over sea 
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# VGUST = wind speed for subgridscale gusts 
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# CTDAY = dailycycle correction (dTskin/dSSRad) 
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# DTHETA = Potential temp. gradient for stability correction 
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# dTstab = potential temp. increment for stability function derivative 
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# FSTAB = Amplitude of stability correction (fraction) 
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# HDRAG = Height scale for orographic correction 
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# FHDRAG = Amplitude of orographic correction (fraction) 
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&AIM_PAR_SFL 
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# FTEMP0 = 0., 
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# FHUM0 = 0., 
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& 
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# Convection constants (namelist AIM_PAR_CNV): 
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# PSMIN = minimum (norm.) sfc. pressure for the occurrence of convection 
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# TRCNV = time of relaxation (in hours) towards reference state 
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# QBL = specific hum. threshold in the boundary layer 
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# RHBL = relative hum. threshold in the boundary layer 
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# RHIL = rel. hum. threshold in intermed. layers for secondary mass flux 
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# ENTMAX = max. entrainment as a fraction of cloudbase mass flux 
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# SMF = ratio between secondary and primary mass flux at cloudbase 
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&AIM_PAR_CNV 
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& 
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# Constants for largescale condensation (namelist AIM_PAR_LSC): 
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# TRLSC = Relaxation time (in hours) for specific humidity 
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# RHLSC = Maximum relative humidity threshold (at sigma=1) 
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# DRHLSC = Vertical range of relative humidity threshold 
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# QSMAX = used to define the maximum latent heat release 
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&AIM_PAR_LSC 
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& 
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# Radiation constants (namelist AIM_PAR_RAD): 
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# RHCL1 = relative hum. corresponding to cloud cover = 0 
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# RHCL2 = relative hum. corresponding to cloud cover = 1 
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# QACL1 = specific hum. threshold for cloud cover in the upper troposphere 
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# QACL2 = specific hum. threshold for cloud cover in the upper troposphere 
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# ALBCL = cloud albedo (for cloud cover = 1) 
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# EPSSW = fraction of incoming solar radiation absorbed by ozone 
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# EPSLW = fraction of surface LW radiation emitted directly to space 
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# EMISFC = longwave surface emissivity 
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#: shortwave absorptivities (for dp = 10^5 Pa) : 
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# ABSDRY = abs. of dry air (visible band) 
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# ABSAER = abs. of aerosols (visible band) 
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# ABSWV1 = abs. of water vapour (visible band, for dq = 1 g/kg) 
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# ABSWV2 = abs. of water vapour (near IR band, for dq = 1 g/kg) 
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# ABSCL1 = abs. of clouds (visible band, constant term) 
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# ABSCL2 = abs. of clouds (visible band, for dw = 1 g/kg) 
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#: longwave absorptivities (per dp = 10^5 Pa) : 
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# ABLWIN = abs. of air in "window" band 
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# ABLCO2 = abs. of air in CO2 band 
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# ABLWV1 = abs. of water vapour in H2O band 1 (weak), for dq = 1 g/kg 
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# ABLWV2 = abs. of water vapour in H2O band 2 (strong), for dq = 1 g/kg 
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# ABLCL1 = abs. of clouds in "window" band, constant term 
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# ABLCL2 = abs. of clouds in "window" band, for dw = 1 g/kg 
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&AIM_PAR_RAD 
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& 
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# Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI): 
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# TRSHC = relaxation time (in hours) for shallow convection 
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# TRVDI = relaxation time (in hours) for moisture diffusion 
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# TRVDS = relaxation time (in hours) for superadiab. conditions 
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# RHGRAD = maximum gradient of relative humidity (d_RH/d_sigma) 
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# SEGRAD = minimum gradient of dry static energy (d_DSE/d_phi) 
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&AIM_PAR_VDI 
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& 