[4] | 1 | # |
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| 2 | # icephys.param - ISPOL |
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| 3 | # |
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| 4 | # Parameter file for sea ice physics, source v2.42 |
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| 5 | # |
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| 6 | # (c) Martin Vancoppenolle, Oct 2011, Louvain-la-Neuve, Belgium |
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| 7 | # |
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| 8 | #================================================================================================== |
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| 9 | # |
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| 10 | #-------------------------------------------------------------------------------------------------- |
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| 11 | # General parameters |
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| 12 | #-------------------------------------------------------------------------------------------------- |
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| 13 | # |
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| 14 | # nlay_i ! number of layers in the ice |
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| 15 | 10 |
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| 16 | # nlay_s ! number of layers in the snow |
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| 17 | 1 |
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| 18 | # parsub ! switch for snow sublimation or not ! should not be used anymore |
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| 19 | 0.0 |
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| 20 | # ln_evap ! switch for snow summer evaporation or not |
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| 21 | .TRUE. |
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| 22 | # tbq_ano ! prescribed air temperature anomaly (K) |
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| 23 | 0.0 |
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| 24 | # |
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| 25 | #-------------------------------------------------------------------------------------------------- |
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| 26 | # Ice desalination |
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| 27 | #-------------------------------------------------------------------------------------------------- |
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| 28 | # |
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| 29 | # ln_grd ! gravity drainage or not |
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| 30 | .TRUE. |
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| 31 | # ln_flu ! flushing or not |
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| 32 | .TRUE. |
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| 33 | # ln_flo ! flooding or not |
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| 34 | .TRUE. |
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| 35 | # flu_beta ! fraction of meltwater percolating in summer |
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| 36 | 0.3 |
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| 37 | # e_thr_flu ! permeability threshold for flushing |
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| 38 | 0.05 |
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| 39 | # frtr_si_phy ! fraction of salt trapped in snow-ice |
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| 40 | 1.0 |
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| 41 | # d_br_mol ! molecular diffusivity of brine (def:1.0e-9, obs: 6.8e-10) |
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| 42 | 6.8e-10 |
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| 43 | # d_br_tur ! turbulent diffusivity of brine (def: 1.0e-6) 3.0e-7 1.0e-7 |
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| 44 | 5.0e-7 |
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| 45 | # ra_c ! critical rayleigh number for brine convection (def: 5, obs: 10) |
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| 46 | 7 |
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| 47 | # ra_smooth ! hyperbolic tangent coefficient for turbulent diffusivity (def:1) |
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| 48 | 0.6 |
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[11] | 49 | # c_gravdr ! gravity drainage: 'CW' = Cox Weeks 1988; 'DI' for eddy diffusive (Vetal10) or 'AD' for Advection-based (new) |
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| 50 | AD |
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| 51 | # c_sbr ! computation of brine salinity for salt transport: linear ('LIN'), Weast 71 (WEA), Notz 05 (NTZ) |
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| 52 | LIN |
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| 53 | # c_perm ! permeability of Freitag ('FRE') or Rees Jones and Worster ('RJW') |
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| 54 | FRE |
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| 55 | # c_permeff ! form of effective permeability : minimum ('MIN') or harmonic mean ('HAR') |
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| 56 | MIN |
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[4] | 57 | # delta_cw ! CW88 grav. drainage eff.(1.68e-7 for CW88 or 0.588e-7 for V08 value) |
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| 58 | 1.68e-7 |
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| 59 | # |
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| 60 | #-------------------------------------------------------------------------------------------------- |
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| 61 | # Radiative transfer (SSL = surface scattering layer) |
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| 62 | #-------------------------------------------------------------------------------------------------- |
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| 63 | # |
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| 64 | # emig ! Surface emissivity (past 0.995) |
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| 65 | 0.995 |
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| 66 | # fpar_fsw ! Visible energetic ratio (Fpar/Fsw, J/J) = 0.475 (Frouin Pinker 95) |
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| 67 | 0.475 |
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| 68 | # qpar_fsw ! Quantum energetic ratio (Qpar/Fsw, µE/J) = 2.33 (Vancoppenollet al 2011) |
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| 69 | 2.33 |
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| 70 | # c_rad_scheme ! use surface transmission parameter ('INOT'), use SSL extinction coefficients ('EXTC') |
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| 71 | INOT |
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| 72 | # c_rad_discr ! discretization of radiation based on absorption ('ABS') or on transmission ('TRA') |
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| 73 | TRA |
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| 74 | # rad_inot_s_dry ! surface transmission parameter, dry snow, visible range (INOT ONLY) ! 0.22 |
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| 75 | 0.22 |
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| 76 | # rad_inot_s_wet ! surface transmission parameter, wet snow, visible range (INOT ONLY) ! 0.22 |
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| 77 | 0.22 |
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| 78 | # rad_inot_i_dry ! surface transmission parameter, dry ice, visible range (INOT only). |
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| 79 | 0.58 |
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| 80 | # rad_inot_i_wet ! surface transmission parameter, wet ice, visible range (INOT only). |
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| 81 | 0.96 |
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| 82 | # h_not_s ! SSL thickness, snow (Perovich 07 0.03 m) |
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| 83 | 0.03 |
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| 84 | # h_not_i ! SSL thicknes, sea ice (Grenfell Maykut 0.1 m) |
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| 85 | 0.10 |
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| 86 | # rad_kappa_s_su_d ! surface extinction coefficient, dry snow (Jarvinen 73 m-1, Pogson 63.2373) (EXTC only) |
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| 87 | 63.2373 |
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| 88 | # rad_kappa_s_su_m ! surface extinction coefficient, melting snow (Jarvinen 51 m-1) (EXTC only) |
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| 89 | 63.2373 |
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| 90 | # rad_kappa_i_su_d ! surface extinction coefficient, cold ice (io = 0.30 for 10 cm -> 12.03 m-1) (EXTC only) |
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| 91 | 12.03 |
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| 92 | # rad_kappa_i_su_m ! surface extinction coefficient, melting ice (EXTC only) |
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| 93 | 12.03 |
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| 94 | # rad_kappa_s_de_d ! depth extinction coefficient in dry snow (Jarvinen 24 m-1, Pogson 14, Nicolaus-analysis 7.33) |
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| 95 | 7.33 |
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| 96 | # rad_kappa_s_de_m ! depth extinction coefficient in melting snow (Jarvinen 7.8 m-1, Pogson 7.5, Perovich 24.28) |
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| 97 | 7.33 |
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| 98 | # rad_kappa_i_de_d ! attenuation coefficient in cold ice (Light et al., 2008 0.8 for visible radiation, Pogson 1.2, Nicolaus analysis, 0.4) |
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| 99 | 0.6 |
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| 100 | # rad_kappa_i_de_m ! attenuation coefficient in melting ice (Light et al., 2008 0.8 for visible radiation Pogson 0.8) |
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| 101 | 0.6 |
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| 102 | # |
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