HYCOM 1/12 CHM
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Previsão realizada com o modelo HYCOM versão 2.2.14 no Centro de Hidrografia da Marinha do Brasil (CHM) com resolução espacial de 1/12 de grau e 21 camadas verticais para o domínio de 45oS-10oN, 60oW-20oW. A condição inicial é produzida com uma versão simpliificada do REMO Ocean Data Assimilation System (RODAS) baseado no método EnOI. São assimilados campos de TSM e de anomalia da altura da superfície do mar. O Método de Cooper e Haines é aplicado também com o campo gridado do AVISO. As previsões oceânicas são forçadas com previsões atmosféricas de 6 em 6 h do modelo Global Forecast System (GFS) do NCEP/NOAA com resolução de 0.5o para cada previsão de 7 dias. O primeiro conjunto de forçantes provém da previsão de 12h do GFS inicializada em 00 UTC, tendo em vista a necessidade de alimentar o HYCOM com campo de precipitação. A máquina usada para a previsão é uma SGI Altix ICE com 256 processadores.
Model blkdat.input:
COADS forcing: precip_zero; SSS relax;SST relax;
boundary relax; iniflg=2; KPP mixed layer; Jerlov IA;
Z(22): dp00/f/x=3m/1.18/120m; ATLd0.08/src_2.2.14_21.
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22 'iversn' = hycom version number x10
033 'iexpt ' = experiment number x10
601 'idm ' = longitudinal array size
733 'jdm ' = latitudinal array size
327 'itest ' = grid point where detailed diagnostics are desired
318 'jtest ' = grid point where detailed diagnostics are desired
21 'kdm ' = number of layers
18 'nhybrd' = number of hybrid levels (0=all isopycnal)
8 'nsigma' = number of sigma levels (nhybrd-nsigma z-levels)
3.0 'dp00 ' = deep z-level spacing minimum thickness (m)
120.0 'dp00x ' = deep z-level spacing maximum thickness (m)
1.18 'dp00f ' = deep z-level spacing stretching factor (1.0=const.space)
0.5 'ds00 ' = shallow z-level spacing minimum thickness (m)
20.0 'ds00x ' = shallow z-level spacing maximum thickness (m)
1.18 'ds00f ' = shallow z-level spacing stretching factor (1.0=const.space)
1.0 'dp00i ' = deep iso-pycnal spacing minimum thickness (m)
6.0 'isotop' = shallowest depth for isopycnal layers (m, <0 from file)
<!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> <!--0--> 35.0 'saln0 ' = initial salinity value (psu), only used for iniflg<2
<!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> <!--2--> 0 'locsig' = locally-referenced pot. density for stability (0=F,1=T)
0 'kapref' = thermobaric ref. state (-1=input,0=none,1,2,3=constant)
0 'thflag' = reference pressure flag (0=Sigma-0, 2=Sigma-2)
25.0 'thbase' = reference density (sigma units)
0 'vsigma' = spacially varying isopycnal target densities (0=F,1=T)
19.50 'sigma ' = layer 1 isopycnal target density (sigma units)
20.25 'sigma ' = layer 2 isopycnal target density (sigma units)
21.00 'sigma ' = layer 3 isopycnal target density (sigma units)
21.75 'sigma ' = layer 4 isopycnal target density (sigma units)
22.50 'sigma ' = layer 5 isopycnal target density (sigma units)
23.25 'sigma ' = layer 6 isopycnal target density (sigma units)
24.00 'sigma ' = layer 7 isopycnal target density (sigma units)
24.70 'sigma ' = layer 8 isopycnal target density (sigma units)
25.28 'sigma ' = layer 9 isopycnal target density (sigma units)
25.77 'sigma ' = layer 10 isopycnal target density (sigma units)
26.18 'sigma ' = layer 11 isopycnal target density (sigma units)
26.52 'sigma ' = layer 12 isopycnal target density (sigma units)
26.80 'sigma ' = layer 13 isopycnal target density (sigma units)
27.03 'sigma ' = layer 14 isopycnal target density (sigma units)
27.22 'sigma ' = layer 15 isopycnal target density (sigma units)
27.38 'sigma ' = layer 16 isopycnal target density (sigma units)
27.52 'sigma ' = layer 17 isopycnal target density (sigma units)
27.64 'sigma ' = layer 18 isopycnal target density (sigma units)
27.74 'sigma ' = layer 19 isopycnal target density (sigma units)
27.82 'sigma ' = layer 20 isopycnal target density (sigma units)
27.88 'sigma ' = layer 21 isopycnal target density (sigma units)
3 'iniflg' = initial state flag (0=levl, 1=zonl, 2=clim)
2 'jerlv0' = initial jerlov water type (1 to 5; 0 to use KPAR)
3 'yrflag' = days in year flag (0=360, 1=366, 2=366J1, 3=actual)
0 'sshflg' = diagnostic SSH flag (0=SSH,1=SSH&stericSSH)
0.5 'dsurfq' = number of days between model diagnostics at the surface
0.5 'diagfq' = number of days between model diagnostics
0.0 'tilefq' = number of days between model diagnostics on selected tiles
0.0 'meanfq' = number of days between model diagnostics (time averaged)
7.0 'rstrfq' = number of days between model restart output
1.0 'bnstfq' = number of days between baro nesting archive input
1.0 'nestfq' = number of days between 3-d nesting archive input
0.125 'cplifq' = number of days (or time steps) between sea ice coupling
360.0 'baclin' = baroclinic time step (seconds), int. divisor of 86400
12.0 'batrop' = barotropic time step (seconds), int. div. of baclin/2
0 'incflg' = incremental update flag (0=no, 1=yes, 2=full-velocity)
100 'incstp' = no. timesteps for full update (1=direct insertion)
1 'incupf' = number of days of incremental updating input
0.125 'wbaro ' = barotropic time smoothing weight
0 'btrlfr' = leapfrog barotropic time step (0=F,1=T)
0 'btrmas' = barotropic is mass conserving (0=F,1=T)
1.0 'hybrlx' = HYBGEN: inverse relaxation coefficient (time steps)
0.01 'hybiso' = HYBGEN: Use PCM if layer is within hybiso of target density
3 'hybmap' = hybrid remapper flag (0=PCM, 1=PLM, 2=PPM, 3=WENO-like)
1 'hybflg' = hybrid generator flag (0=T&S, 1=th&S, 2=th&T)
1 'advflg' = thermal advection flag (0=T&S, 1=th&S, 2=th&T)
2 'advtyp' = scalar advection type (0=PCM,1=MPDATA,2=FCT2,4=FCT4)
2 'momtyp' = momentum advection type (2=2nd order, 4=4th order)
-1.0 'slip ' = +1 for free-slip, -1 for non-slip boundary conditions
0.05 'visco2' = deformation-dependent Laplacian viscosity factor
0.0 'visco4' = deformation-dependent biharmonic viscosity factor
0.0 'facdf4' = speed-dependent biharmonic viscosity factor
0.003 'veldf2' = diffusion velocity (m/s) for Laplacian momentum dissip.
0.02 'veldf4' = diffusion velocity (m/s) for biharmonic momentum dissip.
0.0 'thkdf2' = diffusion velocity (m/s) for Laplacian thickness diffus.
0.05 'thkdf4' = diffusion velocity (m/s) for biharmonic thickness diffus.
0.005 'temdf2' = diffusion velocity (m/s) for Laplacian temp/saln diffus.
0.0 'temdfc' = temp diffusion conservation (0.0,1.0 all dens,temp resp.)
0.0 'vertmx' = diffusion velocity (m/s) for momentum at MICOM M.L.base
0.05 'cbar ' = rms flow speed (m/s) for linear bottom friction
2.2e-3 'cb ' = coefficient of quadratic bottom friction
0.0 'drglim' = limiter for explicit friction (1.0 none, 0.0 implicit)
0.0 'drgscl' = scale factor for tidal drag (0.0 for no tidal drag)
500.0 'thkdrg' = thickness of bottom boundary layer for tidal drag (m)
10.0 'thkbot' = thickness of bottom boundary layer (m)
0.02 'sigjmp' = minimum density jump across interfaces (kg/m**3)
0.2 'tmljmp' = equivalent temperature jump across mixed-layer (degC)
19.2 'thkmls' = reference mixed-layer thickness for SSS relaxation (m)
19.2 'thkmlt' = reference mixed-layer thickness for SST relaxation (m)
6.0 'thkriv' = nominal thickness of river inflow (m)
20.0 'thkfrz' = maximum thickness of near-surface freezing zone (m)
0 'iceflg' = sea ice model flag (0=none,1=energy loan,2=coupled/esmf)
0.0 'tfrz_0' = ENLN: ice melting point (degC) at S=0psu
-0.055 'tfrz_s' = ENLN: gradient of ice melting point (degC/psu)
2.0 'ticegr' = ENLN: temp. grad. inside ice (deg/m); =0 use surtmp
0.5 'hicemn' = ENLN: minimum ice thickness (m)
10.0 'hicemx' = ENLN: maximum ice thickness (m)
0 'ntracr' = number of tracers (0=none,negative to initialize)
0 'trcflg' = tracer flags (one digit per tr, most sig. replicated)
10 'tsofrq' = number of time steps between anti-drift offset calcs
0.0 'tofset' = temperature anti-drift offset (degC/century)
0.0 'sofset' = salnity anti-drift offset (psu/century)
1 'mlflag' = mixed layer flag (0=none,1=KPP,2-3=KT,4=PWP,5=MY,6=GISS)
1 'pensol' = KT: activate penetrating solar rad. (0=F,1=T)
999.0 'dtrate' = KT: maximum permitted m.l. detrainment rate (m/day)
19.2 'thkmin' = KT/PWP: minimum mixed-layer thickness (m)
1 'dypflg' = KT/PWP: diapycnal mixing flag (0=none, 1=KPP, 2=explicit)
10 'mixfrq' = KT/PWP: number of time steps between diapycnal mix calcs
1.e-7 'diapyc' = KT/PWP: diapycnal diffusivity x buoyancy freq. (m**2/s**2)
0.25 'rigr ' = PWP: critical gradient richardson number
0.65 'ribc ' = PWP: critical bulk richardson number
0.7 'rinfty' = KPP: maximum gradient richardson number (shear inst.)
0.3 'ricr ' = KPP: critical bulk richardson number
0.0 'bldmin' = KPP: minimum surface boundary layer thickness (m)
1200.0 'bldmax' = K-PROF: maximum surface boundary layer thickness (m)
0.7 'cekman' = KPP/KT: scale factor for Ekman depth
1.0 'cmonob' = KPP: scale factor for Monin-Obukov depth
0 'bblkpp' = KPP: activate bottom boundary layer (0=F,1=T)
1 'shinst' = KPP: activate shear instability mixing (0=F,1=T)
1 'dbdiff' = KPP: activate double diffusion mixing (0=F,1=T)
1 'nonloc' = KPP: activate nonlocal b. layer mixing (0=F,1=T)
0 'latdiw' = K-PROF: activate lat.dep. int.wave mixing (0=F,1=T)
0 'botdiw' = GISS: activate bot.enhan.int.wav mixing (0=F,1=T)
0 'difsmo' = K-PROF: activate horiz smooth diff coeffs (0=F,1=T)
0 'difout' = K-PROF: output visc/diff coffs in archive (0=F,1=T)
50.e-4 'difm0 ' = KPP: max viscosity due to shear instability (m**2/s)
50.e-4 'difs0 ' = KPP: max diffusivity due to shear instability (m**2/s)
1.e-4 'difmiw' = KPP: background/internal wave viscosity (m**2/s)
1.e-5 'difsiw' = KPP: background/internal wave diffusivity (m**2/s)
10.e-4 'dsfmax' = KPP: salt fingering diffusivity factor (m**2/s)
1.9 'rrho0 ' = KPP: salt fingering rp=(alpha*delT)/(beta*delS)
98.96 'cs ' = KPP: value for nonlocal flux term
10.0 'cstar ' = KPP: value for nonlocal flux term
0.0 'cv ' = KPP: buoyancy frequency ratio (0.0 to use a fn. of N)
5.0 'c11 ' = KPP: value for turb velocity scale
2 'hblflg' = KPP: b. layer interp. flag (0=const.,1=linear,2=quad.)
2 'niter ' = KPP: iterations for semi-implicit soln. (2 recomended)
1 'fltflg' = FLOATS: synthetic float flag (0=no; 1=yes)
4 'nfladv' = FLOATS: advect every nfladv bacl. time steps (even, >=4)
1 'nflsam' = FLOATS: output (0=every nfladv steps; >0=no. of days)
0 'intpfl' = FLOATS: horiz. interp. (0=2nd order+n.n.; 1=n.n. only)
0 'iturbv' = FLOATS: add horiz. turb. advection velocity (0=no; 1=yes)
1 'ismpfl' = FLOATS: sample water properties at float (0=no; 1=yes)
4.63e-6 'tbvar ' = FLOATS: horizontal turb. vel. variance scale (m**2/s**2)
0.4 'tdecri' = FLOATS: inverse decorrelation time scale (1/day)
2 'lbflag' = lateral barotropic bndy flag (0=none, 1=port, 2=input)
0 'tidflg' = TIDES: tidal forcing flag (0=none,1=open-bdy,2=bdy&body)
11111111 'tidcon' = TIDES: 1 digit per (Q1K2P1N2O1K1S2M2), 0=off,1=on
0.06 'tidsal' = TIDES: scalar self attraction and loading factor (<0: file)
<!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> <!--0:--> 1 'tidgen' = TIDES: generic time (0=F,1=T)
3.0 'tidrmp' = TIDES: ramp time (days)
0.0 'tid_t0' = TIDES: origin for ramp time (model day)
12 'clmflg' = climatology frequency flag (6=bimonthly, 12=monthly)
1 'wndflg' = wind stress input flag (0=none,1=u/v-grid,2,3=p-grid)
1 'ustflg' = ustar forcing flag (3=input,1,2=wndspd,4=stress)
1 'flxflg' = thermal forcing flag (0=none,3=net-flux,1,2,4=sst-based)
3 'empflg' = E-P forcing flag (0=none,3=net_E-P, 1,2,4=sst-bas_E)
1 'sssflg' = SSS relaxation flag (0=none,1=clim)
0 'lwflag' = longwave (SST) flag (0=none,1=clim,2=atmos)
0 'sstflg' = SST relaxation flag (0=none,1=clim,2=atmos,3=observed)
0 'icmflg' = ice mask flag (0=none,1=clim,2=atmos,3=obs/coupled)
0 'flxoff' = net flux offset flag (0=F,1=T)
0 'flxsmo' = smooth surface fluxes (0=F,1=T)
0 'relax ' = activate lateral boundary nudging (0=F,1=T)
0 'trcrlx' = activate lat. bound. tracer nudging (0=F,1=T)
1 'priver' = rivers as a precipitation bogas (0=F,1=T)
0 'epmass' = treat evap-precip as a mass exchange (0=F,1=T)
