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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 (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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&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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# CTDAY = daily-cycle correction (dTskin/dSSRad) |
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# DTHETA = Potential temp. gradient for stability correction |
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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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#-- 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 cloud-base mass flux |
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# SMF = ratio between secondary and primary mass flux at cloud-base |
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&AIM_PAR_CNV |
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#-- Constants for large-scale condendation (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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#-- 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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#-- 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 super-adiab. 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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