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# AIM physics package parameters: |
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#-- Physical constants |
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# P0 = reference pressure |
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# GG = gravity accel. |
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# RD = gas constant for dry air |
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# CP = specific heat at constant pressure |
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# ALHC = latent heat of condensation |
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# SBC = Stefan-Boltzmann constant |
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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 corresponding to maximum albedo |
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# SWCAP = Soil wetness capacity |
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# SWWIL = Soil wetness at wilting point |
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&AIM_PAR_FOR |
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#-- Constants for surface fluxes (namelist AIM_PAR_SFL): |
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# FWIND0 = ratio of near-sfc wind to lowest-level wind |
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# FTEMP0 = weight for near-sfc temperature extrapolation (0-1) : |
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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 near-sfc specific humidity extrapolation (0-1) : |
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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 sub-grid-scale gusts |
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# SWMAX = Soil wetness (in mm) corresp. to potential evapotranspiration |
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&AIM_PAR_SFL |
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FWIND0 = 0.42, |
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FTEMP0 = 0., |
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CHL = 2.0e-3, |
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CHS = 0.9e-3, |
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VGUST = 4., |
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& |
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#-- Convection constants (namelist AIM_PAR_CNV): |
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# RHBL = relative hum. threshold in the boundary (lowest) layer |
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# TRCNV = time of relaxation (in hours) towards neutral equilibrium |
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# ENTMAX = max. entrainment as a fraction of cloud-base mass flux |
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&AIM_PAR_CNV |
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& |
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#-- Constants for large-scale condendation (namelist AIM_PAR_LSC): |
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# RHLSC = Relative humidity threshold |
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# TRLSC = Relaxation time (in hours) for supersat. specific humidity |
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&AIM_PAR_LSC |
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#-- Radiation constants (namelist AIM_PAR_RAD): |
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# ABSSW = shortwave absorptivity for dry air (per dp = 10^5 Pa) |
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# ABSLW = longwave absorptivity for dry air (per dp = 10^5 Pa) |
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# ABWSW = shortwave absorptivity for water vapour (per dq = 1 g/kg) |
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# ABWLW = longwave absorptivity for water vapour (per dq = 1 g/kg) |
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# ABCSW = shortwave absorptivity for cloud fraction |
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# ABCLW = longwave absorptivity for cloud fraction |
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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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# ALBCL = cloud albedo (for cloud cover = 1) |
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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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# QACL = specific hum. threshold for cloud cover |
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&AIM_PAR_RAD |
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ABWLW = 0.60, |
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ALBCL = 0.34, |
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RHCL1 = 0.50, |
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RHCL2 = 0.90, |
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QACL = 0.50, |
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& |
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#-- Constants for vertical dif. and sh. conv. (namelist AIM_PAR_VDI): |
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# TRVDI = relaxation time (in hours) for moisture diffusion |
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# TRSHC = relaxation time (in hours) for shallow convection |
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&AIM_PAR_VDI |
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TRVDI = 48., |
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TRSHC = 12., |
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& |
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