Changeset 5071
- Timestamp:
- 2015-02-09T14:39:23+01:00 (9 years ago)
- File:
-
- 1 edited
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branches/2015/dev_r5044_CNRS_LIM3CLEAN/NEMOGCM/CONFIG/SHARED/namelist_ice_lim3_ref
r5068 r5071 13 13 &namicerun ! Generic parameters 14 14 !------------------------------------------------------------------------------ 15 jpl = 5 ! number of ice categories 16 nlay_i = 2 ! number of ice layers 17 nlay_s = 1 ! number of snow layers (only 1 is working) 15 18 cn_icerst_in = "restart_ice" ! suffix of ice restart name (input) 16 19 cn_icerst_out = "restart_ice" ! suffix of ice restart name (output) … … 35 38 rn_smi_ini_s = 6.3 ! " " South 36 39 rn_tmi_ini_n = 270. ! initial ice/snw temperature (K), North 37 rn_tmi_ini_s = 270. ! " " 40 rn_tmi_ini_s = 270. ! " " South 38 41 / 39 42 !------------------------------------------------------------------------------ 40 43 &namiceitd ! Ice discretization 41 44 !------------------------------------------------------------------------------ 42 jpl = 5 ! number of ice categories43 nlay_i = 2 ! number of ice layers44 nlay_s = 1 ! number of snow layers (only 1 is working)45 45 nn_catbnd = 1 ! computation of ice category boundaries based on 46 46 ! 1: tanh function … … 51 51 &namicedyn ! Ice dynamics and transport 52 52 !------------------------------------------------------------------------------ 53 nn_icestr = 0 ! ice strength parameteriztaion !MV, replaces ridge_scheme_swi53 nn_icestr = 0 ! ice strength parameteriztaion 54 54 ! 0: Hibler_79 P = pstar*<h>*exp(-c_rhg*A) 55 55 ! 1: Rothrock_75 P = Cf*coeff*integral(wr.h^2) 56 nn_icestr_bvf = 0 ! ice strength function brine volume (1) or not (0) !MV replaces brinstren_swi 56 ln_icestr_bvf = .false. ! ice strength function brine volume (T) or not (F) 57 rn_pe_rdg = 17.0 ! ridging work divided by pot. energy change in ridging, if nn_icestr = 1 57 58 rn_pstar = 2.0e+04 ! ice strength thickness parameter (N/m2), nn_icestr = 0 58 59 rn_crhg = 20.0 ! ice strength conc. parameter (-), nn_icestr = 0 … … 63 64 rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast 64 65 ! advised value: 1/3 (rn_nevp=120) or 1/9 (rn_nevp=300) 65 ! nn_ahi0 = 2 ! horizontal diffusivity computation ! MV only 2 is coded now 66 !! 0: use rn_ahi0_ref67 ! ! 1: use rn_ahi0_ref .mean grid cell length / ( 2deg mean grid cell length )68 ! ! 2: use rn_ahi0_ref .grid cell length / ( 2deg mean grid cell length )66 nn_ahi0 = 2 ! horizontal diffusivity computation 67 ! 0: use rn_ahi0_ref 68 ! 1: use rn_ahi0_ref x mean grid cell length / ( 2deg mean grid cell length ) 69 ! 2: use rn_ahi0_ref x grid cell length / ( 2deg mean grid cell length ) 69 70 rn_ahi0_ref = 350.0 ! horizontal sea ice diffusivity (m2/s) 70 71 ! if nn_ahi0 > 0, rn_ahi0_ref is the reference value at a nominal 2 deg resolution … … 74 75 !------------------------------------------------------------------------------ 75 76 rn_hnewice = 0.1 ! thickness for new ice formation in open water (m) 76 nn_frazil = 0 ! use frazil ice collection thickness as a function of wind (1.0) or not (0.0)77 ln_frazil = .false. ! use frazil ice collection thickness as a function of wind (T) or not (F) 77 78 rn_maxfrazb = 0.0 ! maximum fraction of frazil ice collecting at the ice base 78 79 rn_vfrazb = 0.417 ! thresold drift speed for frazil ice collecting at the ice bottom (m/s) … … 110 111 &namiceitdme ! Ice mechanical redistribution (ridging and rafting) 111 112 !------------------------------------------------------------------------------ 112 rn_pe_rdg = 17.0 ! ridging work divided by pot. energy change in ridging, nn_ice str = 1 ! MV replaces Cf113 113 rn_Cs = 0.5 ! fraction of shearing energy contributing to ridging 114 114 rn_fsnowrdg = 0.5 ! snow volume fraction that survives in ridging … … 120 120 rn_astar = 0.05 ! exponential measure of ridging ice fraction (nn_partfun = 1) 121 121 rn_hstar = 100.0 ! determines the maximum thickness of ridged ice (m) (Hibler, 1980) 122 nn_rafting = 1 ! rafting activated (1) or not (0)123 rn_hraft = 0.75 ! threshold thickness for rafting (m) !MV replaces h_parmeter122 ln_rafting = .true. ! rafting activated (T) or not (F) 123 rn_hraft = 0.75 ! threshold thickness for rafting (m) 124 124 rn_craft = 5.0 ! squeezing coefficient used in the rafting function 125 125 rn_por_rdg = 0.3 ! porosity of newly ridged ice (Lepparanta et al., 1995)
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