source: branches/2015/dev_r5044_CNRS_LIM3CLEAN/NEMOGCM/CONFIG/SHARED/namelist_ice_lim3_ref @ 5048

Last change on this file since 5048 was 5048, checked in by vancop, 6 years ago

new itd boundaries, namelist changes, mono-category and comments

File size: 6.9 KB
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1!!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2!! NEMO/LIM3 :  1 - dynamics/advection/thermo          (namicerun)
3!! namelists    2 - ice intialisation                  (namiceini)
4!!              3 - ice dynamics                       (namicedyn)
5!!              4 - ice advection                      (namicetrp)
6!!              5 - thermodynamics                     (namicethd)
7!!              6 - ice salinity                       (namicesal)
8!!              7 - mechanical redistribution of ice   (namiceitdme)
9!!              8 - ice diagnostics                    (namicedia)
10!!              9 - ice outputs                        (namiceout)
11!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
12
13!-----------------------------------------------------------------------
14&namicerun     !   Share parameters for dynamics/advection/thermo
15!-----------------------------------------------------------------------
16   cn_icerst_in  = "restart_ice"   !  suffix of ice restart name (input)
17   cn_icerst_out = "restart_ice"   !  suffix of ice restart name (output)
18   ln_limdyn     = .true.          !  ice dynamics (T) or thermodynamics only (F)
19   amax          = 0.999           !  maximum tolerated ice concentration
20   ln_nicep      = .false.         !  ice points output for debug (yes or no)
21   ln_limdiahsb  = .false.         !  check the heat and salt budgets (T) or not (F)
22   ln_limdiaout  = .true.          !  output the heat and salt budgets (T) or not (F)
23/
24!-----------------------------------------------------------------------
25&namiceini     !   ice initialization
26!-----------------------------------------------------------------------
27   ln_limini   = .false.   !  activate ice initialization (T) or not (F)
28   thres_sst   =  0.0      !  threshold water temperature for initial sea ice
29   hts_ini_n   =  0.3      !  initial snow thickness (North)
30   hts_ini_s   =  0.3      !        "            "   (South)
31   hti_ini_n   =  3.0      !  initial ice thickness  (North)
32   hti_ini_s   =  1.0      !        "            "   (South)
33   ati_ini_n   =  0.9      !  initial ice concentration (North)
34   ati_ini_s   =  0.9      !        "            "      (South)
35   smi_ini_n   =  6.3      !  initial ice salinity   (North)
36   smi_ini_s   =  6.3      !        "            "   (South)
37   tmi_ini_n   =  270.     !  initial ice/snw temp   (North)
38   tmi_ini_s   =  270.     !  initial ice/snw temp   (South)
39/
40!-----------------------------------------------------------------------
41&namicedyn     !   ice dynamics
42!-----------------------------------------------------------------------
43   cw          =   5.0e-03 !  ice-ocean drag coefficient
44   pstar       =   2.0e+04 !  1st bulk-rheology parameter (N/m)
45   c_rhg       =  20.0     !  2nd bulk-rhelogy parameter
46   creepl      =   1.0e-12 !  creep limit (s-1)
47   ecc         =   2.0     !  eccentricity of the elliptical yield curve
48   ahi0        = 350.e0    !  horizontal eddy diffusivity coefficient for sea-ice (m2/s), depends on resolution
49   nevp        = 120       !  number of EVP subcycles
50   relast      =   0.333   !  ratio of elastic timescale to ice time step (1/3 if nevp=120, 1/9 if nevp=300)
51   hminrhg     =   0.001   !  ice volume (a*h in m) below which ice velocity equals ocean velocity
52/
53!-----------------------------------------------------------------------
54&namicethd     !   ice thermodynamics
55!-----------------------------------------------------------------------
56   hiccrit     = 0.1       !  thickness for new ice formation in open water
57   fraz_swi    = 0         !  use frazil ice collection thickness as a function of wind (1.0) or not (0.0)
58   maxfrazb    = 0.0       !  maximum portion of frazil ice collecting at the ice bottom
59   vfrazb      = 0.417     !  thresold drift speed for frazil ice collecting at the ice bottom
60   Cfrazb      = 5.0       !  squeezing coefficient for frazil ice collecting at the ice bottom
61   hiclim      = 0.10      !  minimum thickness of the first thickness category, must be smaller than hiccrit
62   betas       = 0.6       !  exponent in lead-ice fractionation of snow precipitation 0.66
63                           !        betas = 1 -> equipartition, betas < 1 -> more on leads
64   kappa_i     = 1.0       !  extinction radiation parameter in sea ice (m-1)
65   nconv_i_thd = 50        !  maximal number of iterations for heat diffusion computation
66   maxer_i_thd = 0.0001    !  temperature error tolerance after heat diffusion
67   thcon_i_swi = 1         !  sea ice thermal conductivity, Untersteiner_64 (0) or Pringle_et_al_07 (1)
68   nn_monocat  = 0         !  virtual ITD mono-category parameterizations (1) or not (0); 1 ok for jpl=1 only
69                           !  2=replace ridging by piling, 3=activate G(he) only, 4=activate lateral melting only) --- those are temporary test options
70/
71!-----------------------------------------------------------------------
72&namicesal     !   ice salinity
73!-----------------------------------------------------------------------
74   num_sal     =  2        !  S=bulk_sal (1), S(z,t) - (2), S(z) Schwarzacher_59 (3)
75   bulk_sal    =  4.0      !  if 1 is used, it represents the ice salinity
76   sal_G       =  5.00     !  restoring salinity, gravity drainage (g/kg)
77   time_G      =  1.728e+6 !  restoring time scale, gravity drainage  (s)
78   sal_F       =  2.00     !  restoring salinity, flushing (g/kg)
79   time_F      =  8.640e+5 !  restoring time, flushing (s)
80   s_i_max     = 20.0      !  maximum tolerated ice salinity (g/kg)
81   s_i_min     =  0.1      !  minimum tolerated ice salinity (g/kg)
82/
83!-----------------------------------------------------------------------
84&namiceitdme   !   parameters for mechanical redistribution of ice
85!-----------------------------------------------------------------------
86   ridge_scheme_swi =   0    !  ice strength parameteriztaion, Hibler_79 (0), Rothrock_75 (1)
87   Cs               =   0.50 !  ratio of shearing energy contributing to ridging
88   Cf               =  17.0  !  ratio of ridging work to potential energy change in ridging
89   fsnowrdg         =   0.5  !  snow volume fraction that survives in ridging
90   fsnowrft         =   0.5  !  snow volume fraction that survives in rafting
91   Gstar            =   0.15 !  fractional area of thin ice being ridged (partfun_swi = 0)
92   astar            =   0.05 !  measures fractional area of thin ice being ridged (partfun_swi = 1)
93   Hstar            = 100.0  !  determines the maximum thickness of ridged ice (m)
94   raft_swi         =   1    !  rafting activated (1) or not (0)
95   hparmeter        =   0.75 !  threshold thickness for rafting (m)
96   Craft            =   5.0  !  coefficient used in the rafting function
97   ridge_por        =   0.3  !  porosity of newly ridged ice
98   partfun_swi      =   1    !  participation function: linear, Thorndike et al 75 (0) or exponential, Lipscomb 07 (1)
99   brinstren_swi    =   0    !  ice strength is a function of brine volume fraction (1) or not (0)
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