# AIM physics package parameters:

#--   Physical constants
#      P0   = reference pressure
#      GG   = gravity accel.
#      RD   = gas constant for dry air
#      CP   = specific heat at constant pressure
#      ALHC = latent heat of condensation
#      SBC  = Stefan-Boltzmann constant            

#--   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 corresponding to maximum albedo
#      SWCAP  = Soil wetness capacity
#      SWWIL  = Soil wetness at wilting point 
 &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
#      SWMAX  = Soil wetness (in mm) corresp. to potential evapotranspiration  
 &AIM_PAR_SFL
  FWIND0 = 0.42, 
  FTEMP0 = 0., 
  CHL  = 2.0e-3,
  CHS  = 0.9e-3,
  VGUST  = 4.,
 &

#--   Convection constants (namelist AIM_PAR_CNV):
#      RHBL   = relative hum. threshold in the boundary (lowest) layer
#      TRCNV  = time of relaxation (in hours) towards neutral equilibrium
#      ENTMAX = max. entrainment as a fraction of cloud-base mass flux
 &AIM_PAR_CNV
 &

#--   Constants for large-scale condendation (namelist AIM_PAR_LSC): 
#      RHLSC  = Relative humidity threshold
#      TRLSC  = Relaxation time (in hours) for supersat. specific humidity 
 &AIM_PAR_LSC
 &

#--   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)
#      RHCL1  = relative hum. corresponding to cloud cover = 0
#      RHCL2  = relative hum. corresponding to cloud cover = 1
#      QACL   = specific hum. threshold for cloud cover
 &AIM_PAR_RAD
   ABWLW = 0.60,
   ALBCL = 0.34,
   RHCL1 = 0.50,
   RHCL2 = 0.90,
   QACL  = 0.50,
 &

#--   Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI): 
#      TRVDI  = relaxation time (in hours) for moisture diffusion
#      TRSHC  = relaxation time (in hours) for shallow convection
 &AIM_PAR_VDI
   TRVDI = 48.,
   TRSHC = 12.,
 &