152 lines
10 KiB
Plaintext
152 lines
10 KiB
Plaintext
!!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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!! SI3 configuration namelist: Overwrites SHARED/namelist_ice_ref
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!! 1 - Generic parameters (nampar)
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!! 2 - Ice thickness discretization (namitd)
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!! 3 - Ice dynamics (namdyn)
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!! 4 - Ice ridging/rafting (namdyn_rdgrft)
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!! 5 - Ice rheology (namdyn_rhg)
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!! 6 - Ice advection (namdyn_adv)
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!! 7 - Ice surface boundary conditions (namsbc)
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!! 8 - Ice thermodynamics (namthd)
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!! 9 - Ice heat diffusion (namthd_zdf)
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!! 10 - Ice lateral melting (namthd_da)
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!! 11 - Ice growth in open water (namthd_do)
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!! 12 - Ice salinity (namthd_sal)
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!! 13 - Ice melt ponds (namthd_pnd)
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!! 14 - Ice initialization (namini)
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!! 15 - Ice/snow albedos (namalb)
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!! 16 - Ice diagnostics (namdia)
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!!>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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!
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!------------------------------------------------------------------------------
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&nampar ! Generic parameters
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!------------------------------------------------------------------------------
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jpl = 5 ! 10 ! number of ice categories
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nlay_i = 3 ! 5 ! number of ice layers
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/
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!------------------------------------------------------------------------------
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&namitd ! Ice discretization
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!------------------------------------------------------------------------------
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ln_cat_hfn = .true. ! ice categories are defined by a function following rn_himean**(-0.05)
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rn_himean = 1.5 !2.0 ! expected domain-average ice thickness (m)
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rn_himin = 0.01 ! minimum ice thickness (m) allowed
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/
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!------------------------------------------------------------------------------
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&namdyn ! Ice dynamics
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!------------------------------------------------------------------------------
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ln_landfast_L16 = .true. ! landfast: parameterization from Lemieux 2016
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rn_lf_tensile = 0.2 !0.05 ! isotropic tensile strength [0-0.5??]
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/
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!------------------------------------------------------------------------------
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&namdyn_rdgrft ! Ice ridging/rafting
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!------------------------------------------------------------------------------
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! -- ice_rdgrft_strength -- !
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ln_str_H79 = .true. ! ice strength param.: Hibler_79 => P = pstar*<h>*exp(-c_rhg*A)
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rn_pstar = 2.7e+04 !3.5e+04 !2.0e+04 ! ice strength thickness parameter [N/m2]
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rn_crhg = 20.0 !30.0 !20.0 ! ice strength conc. parameter (-)
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/
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!------------------------------------------------------------------------------
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&namdyn_rhg ! Ice rheology
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!------------------------------------------------------------------------------
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ln_rhg_EVP = .true. ! EVP rheology
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ln_aEVP = .false. ! adaptive rheology (Kimmritz et al. 2016 & 2017)
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rn_creepl = 2.0e-9 ! creep limit [1/s]
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rn_ecc = 2.0 ! eccentricity of the elliptical yield curve
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nn_nevp = 120 ! number of EVP subcycles
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rn_relast = 0.333 ! ratio of elastic timescale to ice time step: Telast = dt_ice * rn_relast
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! advised value: 1/3 (nn_nevp=100) or 1/9 (nn_nevp=300)
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nn_rhg_chkcvg = 0 ! check convergence of rheology
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! = 0 no check
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! = 1 check at the main time step (output xml: uice_cvg)
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! = 2 check at both main and rheology time steps (additional output: ice_cvg.nc)
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! this option 2 asks a lot of communications between cpu
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/
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!------------------------------------------------------------------------------
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&namdyn_adv ! Ice advection
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!------------------------------------------------------------------------------
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ln_adv_Pra = .false. ! Advection scheme (Prather)
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ln_adv_UMx = .true. ! Advection scheme (Ultimate-Macho)
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nn_UMx = 5 ! order of the scheme for UMx (1-5 ; 20=centered 2nd order)
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/
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!------------------------------------------------------------------------------
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&namsbc ! Ice surface boundary conditions
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!------------------------------------------------------------------------------
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nn_snwfra = 1 !2 ! calculate the fraction of ice covered by snow (for zdf and albedo)
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nn_qtrice = 0 !1 ! Solar flux transmitted thru the surface scattering layer:
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! = 0 Grenfell and Maykut 1977 (depends on cloudiness and is 0 when there is snow)
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! = 1 Lebrun 2019 (equals 0.3 anytime with different melting/dry snw conductivities)
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/
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!------------------------------------------------------------------------------
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&namthd ! Ice thermodynamics
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!------------------------------------------------------------------------------
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ln_icedA = .false. ! activate lateral melting param. (T) or not (F)
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ln_leadhfx = .false. ! heat in the leads is used to melt sea-ice before warming the ocean
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/
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!------------------------------------------------------------------------------
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&namthd_zdf ! Ice heat diffusion
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!------------------------------------------------------------------------------
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/
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!------------------------------------------------------------------------------
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&namthd_da ! Ice lateral melting
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!------------------------------------------------------------------------------
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/
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!------------------------------------------------------------------------------
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&namthd_do ! Ice growth in open water
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!------------------------------------------------------------------------------
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rn_hinew = 0.1 !0.02 ! thickness for new ice formation in open water (m), must be larger than rn_himin
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ln_frazil = .false. !.true. ! Frazil ice parameterization (ice collection as a function of wind)
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/
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!------------------------------------------------------------------------------
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&namthd_sal ! Ice salinity
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!------------------------------------------------------------------------------
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/
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!------------------------------------------------------------------------------
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&namthd_pnd ! Melt ponds
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!------------------------------------------------------------------------------
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ln_pnd = .false. !.true. ! activate melt ponds or not
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ln_pnd_LEV = .false. ! level ice melt ponds (from Flocco et al 2007,2010 & Holland et al 2012)
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/
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!------------------------------------------------------------------------------
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&namini ! Ice initialization
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!------------------------------------------------------------------------------
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ln_iceini = .true. ! activate ice initialization (T) or not (F)
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nn_iceini_file = 0 ! 0 = Initialise sea ice based on SSTs
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! 1 = Initialise sea ice from single category netcdf file
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! 2 = Initialise sea ice from multi category restart file
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rn_thres_sst = 0.5 ! max delta temp. above Tfreeze with initial ice = (sst - tfreeze)
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rn_hts_ini_n = 0.1 ! initial real snow thickness (m), North
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rn_hti_ini_n = 1.0 ! initial real ice thickness (m), North
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rn_ati_ini_n = 0.9 ! initial ice concentration (-), North
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rn_smi_ini_n = 6.0 ! initial ice salinity (g/kg), North
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rn_tmi_ini_n = 267. ! initial ice/snw temperature (K), North
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! -- for nn_iceini_file = 1
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! ! file name ! frequency (hours) ! variable ! time interp.! clim ! 'yearly'/ ! weights filename ! rotation ! land/sea mask !
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! ! ! (if <0 months) ! name ! (logical) ! (T/F) ! 'monthly' ! ! pairing ! filename !
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sn_hti = 'iicethic_ORAS5' , -1 ,'iicethic' , .false. , .false., 'monthly' , '' , '', ''
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sn_hts = 'isnowinvent_ORAS5' , -1 ,'isnow' , .false. , .false., 'monthly' , '' , '', ''
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sn_ati = 'ileadfra_ORAS5' , -1 ,'ileadfra', .false. , .false., 'monthly' , '' , '', ''
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sn_smi = 'NOT USED' , -12 ,'smi' , .false. , .true., 'yearly' , '' , '', ''
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sn_tmi = 'NOT USED' , -12 ,'tmi' , .false. , .true., 'yearly' , '' , '', ''
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sn_tsu = 'NOT USED' , -12 ,'tsu' , .false. , .true., 'yearly' , '' , '', ''
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sn_tms = 'NOT USED' , -12 ,'tms' , .false. , .true., 'yearly' , '' , '', ''
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! melt ponds (be careful, sn_apd is the pond concentration (not fraction), so it differs from rn_apd)
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sn_apd = 'NOT USED' , -12 ,'apd' , .false. , .true., 'yearly' , '' , '', ''
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sn_hpd = 'NOT USED' , -12 ,'hpd' , .false. , .true., 'yearly' , '' , '', ''
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sn_hld = 'NOT USED' , -12 ,'hld' , .false. , .true., 'yearly' , '' , '', ''
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cn_dir='./'
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/
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!------------------------------------------------------------------------------
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&namalb ! albedo parameters
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!------------------------------------------------------------------------------
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! ! ! obs range (cloud-sky)
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rn_alb_sdry = 0.87 !0.87 !0.87 !0.85 ! dry snow albedo : 0.85 -- 0.87
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rn_alb_smlt = 0.82 !0.82 !0.82 !0.75 ! melting snow albedo : 0.72 -- 0.82
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rn_alb_idry = 0.65 !0.72 !0.65 !0.60 ! dry ice albedo : 0.54 -- 0.65
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rn_alb_imlt = 0.61 !0.65 !0.58 !0.50 ! bare puddled ice albedo : 0.49 -- 0.58
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rn_alb_dpnd = 0.61 !0.65 !0.58 !0.27 ! ponded ice albedo : 0.10 -- 0.30
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/
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!------------------------------------------------------------------------------
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&namdia ! Diagnostics
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!------------------------------------------------------------------------------
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/
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