# AIM physics package parameters: C-- AIM interface parameter (namelist AIM_PARAMS): # aim_useFMsurfBC :: select surface B.C. from Franco Molteni # aim_useMMsurfFc :: select Monthly Mean surface forcing (e.g., NCEP) # aim_surfPotTemp :: surf.Temp input file is in Pot.Temp (aim_useMMsurfFc) # aim_energPrecip :: account for energy of precipitation (snow & rain temp) # aim_splitSIOsFx :: compute separately Sea-Ice & Ocean surf. Flux # aim_LandFile :: file name for Land fraction [0-1] # aim_MMsufx :: sufix for all Monthly Mean surface forcing files # aim_MMsufxLength :: Length of sufix (Monthly Mean surf. forc. files) # aim_albFile :: file name for Albedo input file (F.M. surfBC) # aim_vegFile :: file name for vegetation fraction (F.M. surfBC) # aim_sstFile :: file name for Sea.Surf.Temp (F.M. surfBC) # aim_lstFile :: file name for Land.Surf.Temp (F.M. surfBC) # aim_oiceFile :: file name for Sea Ice fraction (F.M. surfBC) # aim_snowFile :: file name for Snow depth (F.M. surfBC) # aim_swcFile :: file name for Soil Water content (F.M. surfBC) # aim_dragStrato :: stratospheric-drag damping time scale (s) # aim_clrSkyDiag :: compute clear-sky radiation for diagnostics # aim_taveFreq :: Frequency^-1 for time-average output (s) # aim_diagFreq :: Frequency^-1 for diagnostic output (s) # aim_tendFreq :: Frequency^-1 for tendencies output (s) &AIM_PARAMS # aim_useFMsurfBC=.FALSE., # aim_useMMsurfFc=.TRUE., # aim_surfPotTemp=.TRUE., aim_energPrecip=.TRUE., aim_splitSIOsFx=.TRUE., aim_LandFile= 'landFrc.cpl_FM.bin', aim_albFile = 'albedo_cs32.bin', aim_vegFile = 'vegetFrc.cpl_FM.bin', aim_sstFile = 'seaSurfT.cpl_FM.bin', aim_lstFile = 'lndSurfT.cpl_FM.bin', aim_oiceFile= 'seaIce.cpl3FM.bin', aim_snowFile= 'snowDepth.cpl_FM.bin', aim_swcFile = 'soilMoist.cpl_FM.bin', aim_dragStrato= 2592000., # aim_clrSkyDiag=.TRUE., # aim_diagFreq=3600., & #-- Physical constants # P0 = reference pressure [Pa=N/m2] # GG = gravity accel. [m/s2] # RD = gas constant for dry air [J/kg/K] # CP = specific heat at constant pressure [J/kg/K] # ALHC = latent heat of condensation [J/g] # ALHF = latent heat of freezing [J/g] # SBC = Stefan-Boltzmann constant # rainCP = heat capacity of liquid water [J/g/K] # tFreeze = freezing temperature of pure water [K] #-- Constants for forcing fields (namelist AIM_PAR_FOR): # SOLC = Solar constant (area averaged) in W/m^2 # ALBSEA = Albedo over sea # ALBICE = Albedo over sea ice (for ice fraction = 1) # ALBSN = Albedo over snow (for snow depth > SDALB) # SDALB = Snow depth (mm water) corresponding to maximum albedo # SWCAP = Soil wetness at field capacity (volume fraction) # SWWIL = Soil wetness at wilting point (volume fraction) # hSnowWetness :: snow depth (m) corresponding to maximum wetness &AIM_PAR_FOR & #-- Constants for surface fluxes (namelist AIM_PAR_SFL): # FWIND0 = ratio of near-sfc wind to lowest-level wind # FTEMP0 = weight for near-sfc temperature extrapolation (0-1) : # 1 : linear extrapolation from two lowest levels # 0 : constant potential temperature ( = lowest level) # FHUM0 = weight for near-sfc specific humidity extrapolation (0-1) : # 1 : extrap. with constant relative hum. ( = lowest level) # 0 : constant specific hum. ( = lowest level) # CDL = drag coefficient for momentum over land # CDS = drag coefficient for momentum over sea # CHL = heat exchange coefficient over land # CHS = heat exchange coefficient over sea # VGUST = wind speed for sub-grid-scale gusts # CTDAY = daily-cycle correction (dTskin/dSSRad) # DTHETA = Potential temp. gradient for stability correction # dTstab = potential temp. increment for stability function derivative # FSTAB = Amplitude of stability correction (fraction) # HDRAG = Height scale for orographic correction # FHDRAG = Amplitude of orographic correction (fraction) &AIM_PAR_SFL # FTEMP0 = 0., # FHUM0 = 0., # dTstab = 0., & #-- Convection constants (namelist AIM_PAR_CNV): # PSMIN = minimum (norm.) sfc. pressure for the occurrence of convection # TRCNV = time of relaxation (in hours) towards reference state # QBL = specific hum. threshold in the boundary layer # RHBL = relative hum. threshold in the boundary layer # RHIL = rel. hum. threshold in intermed. layers for secondary mass flux # ENTMAX = max. entrainment as a fraction of cloud-base mass flux # SMF = ratio between secondary and primary mass flux at cloud-base &AIM_PAR_CNV & #-- Constants for large-scale condensation (namelist AIM_PAR_LSC): # TRLSC = Relaxation time (in hours) for specific humidity # RHLSC = Maximum relative humidity threshold (at sigma=1) # DRHLSC = Vertical range of relative humidity threshold # QSMAX = used to define the maximum latent heat release &AIM_PAR_LSC & #-- Radiation constants (namelist AIM_PAR_RAD): # RHCL1 = relative hum. corresponding to cloud cover = 0 # RHCL2 = relative hum. corresponding to cloud cover = 1 # QACL1 = specific hum. threshold for cloud cover in the upper troposphere # QACL2 = specific hum. threshold for cloud cover in the upper troposphere # ALBCL = cloud albedo (for cloud cover = 1) # EPSSW = fraction of incoming solar radiation absorbed by ozone # EPSLW = fraction of surface LW radiation emitted directly to space # EMISFC = longwave surface emissivity #--: shortwave absorptivities (for dp = 10^5 Pa) : # ABSDRY = abs. of dry air (visible band) # ABSAER = abs. of aerosols (visible band) # ABSWV1 = abs. of water vapour (visible band, for dq = 1 g/kg) # ABSWV2 = abs. of water vapour (near IR band, for dq = 1 g/kg) # ABSCL1 = abs. of clouds (visible band, constant term) # ABSCL2 = abs. of clouds (visible band, for dw = 1 g/kg) #--: longwave absorptivities (per dp = 10^5 Pa) : # ABLWIN = abs. of air in "window" band # ABLCO2 = abs. of air in CO2 band # ABLWV1 = abs. of water vapour in H2O band 1 (weak), for dq = 1 g/kg # ABLWV2 = abs. of water vapour in H2O band 2 (strong), for dq = 1 g/kg # ABLCL1 = abs. of clouds in "window" band, constant term # ABLCL2 = abs. of clouds in "window" band, for dw = 1 g/kg &AIM_PAR_RAD & #-- Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI): # TRSHC = relaxation time (in hours) for shallow convection # TRVDI = relaxation time (in hours) for moisture diffusion # TRVDS = relaxation time (in hours) for super-adiab. conditions # RHGRAD = maximum gradient of relative humidity (d_RH/d_sigma) # SEGRAD = minimum gradient of dry static energy (d_DSE/d_phi) &AIM_PAR_VDI &