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add new flags for advecting sea ice momentum
put pkg/seaice Wind-Stress common block within CPP option: SEAICE_EXCLUDE_WIND_STRESS
add new CPP flag SEAICE_ALLOW_BOTTOMDRAG (undefined) for reference
add flags for new Picard-Krylov solver for sea ice dynamics (but not yet the solver itself)
- add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising delta with a smooth function in s/r seaice_calc_viscosity (no effect on EVP) - rename local suffix "sqr" into "sq" for more consistent variable names
change comments after renaming SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA
- seaice_cost_final.F : fix ALLOW_COST_ICE case - SEAICE_OPTIONS.h : document ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA - cost_hyd.F : add SEAICE_OPTIONS.h, where ALLOW_SEAICE_COST_SMR_AREA is defined
Introducing a new parameterization for grease ice, i.e. newly formed sea ice in open water: What it does: The grease ice parameterization delays formation of solid sea ice from frazil ice by a time constant and provides a dynamic calculation of the initial solid sea ice thickness HO as a function of winds, currents and available grease ice volume. Grease ice does not significantly reduce heat loss from the ocean in winter and area covered by grease is thus handled like open water. (for details see Smedsrud and Martin, 2014, Ann.Glac.) How to use: - enable SEAICE_GREASE in SEAICE_OPTIONS.h - set SItrName(1) = 'grease' in namelist SEAICE_PARM03 in data.seaice then output SItr01 is SItrNameLong(1) = 'grease ice volume fraction', with SItrUnit(1) = '[0-1]', which needs to be multiplied by SIheff to yield grease ice volume. - additionally, the actual grease ice layer thickness (diagnostic SIgrsLT) can be saved.
add some documentation for the flags SEAICE_VECTORIZE_LSR and SEAICE_VECTORIZE_LSR_ZEBRA
- remove legacy branch code. - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
Replace SEAICE_MULTICATEGORY check with "warning" instead of "error+stop". Update SEAICE_OPTIONS.h for main code and "almost-up-to-date" verification experiments.
removing obsolete ITD-related SEAICE_MULTICATEGORY lines
- add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver; default: not compiled and not used.
fix 1 comment (in ITD option) + move ITD option just after MULTICATEGORY setting
small fix: move SEAICE_ZETA_SMOOTHREG to where it is potentially useful
Step 1 of merging ice-thickness distribution (ITD) code from MITgcm_contrib/torge/itd/code/ to main repository (author: Torge Martin)
Add CPP flags for JFNK
- switch both SEAICE_GROWTH_LEGACY & SEAICE_DISABLE_HEATCONSFIX to #undef ; - update comments; removed obsolete CPP options.
- remove unpopular check and stop logic for MCPHEE_OCEAN_ICE_HEAT_FLUX MCPHEE_OCEAN_ICE_HEAT_FLUX GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR - just issue a warning that defaults changed.
- final version of turbulent flux params, as agreed at MIT ice meet:
SEAICE_mcPheePiston (default is ~ 0.000875)
SEAICE_mcPheeTaper (default is 0.)
SEAICE_frazilFrac (defualt is 1.)
SEAICE_mcPheeStepFunc (default is false)
- changes results at trunction error level.
--------
- retire short lived SEAICEturbFluxFormula (1,2,3,4) and instead
add SEAICE_mcPheeStepFunc (true replaces SEAICEturbFluxFormula=4)
- seaice_check.F :
-- map old params to SEAICE_mcPheePiston, SEAICE_mcPheeTaper, SEAICE_frazilFrac
-- stops to make default change known to common user (that most likely had undef
MCPHEE_OCEAN_ICE_HEAT_FLUX and GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR)
- SEAICE_OPTIONS.h : define MCPHEE_OCEAN_ICE_HEAT_FLUX and GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
that only serve the purpose of stopping in seaice_check to aknowledge the change of defaults.
- seaice_growth.F : use new params.
- SEAICE_PARAMS.h, seaice_init_fixed.F, seaice_readparms.F, seaice_summary.F : handle new params.
- simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula.EQ. 1 or 2, using newly added run time parameter SEAICE_availHeatTaper. - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148. - add permanent SItflux diag that corresponds to TFLUX but includes ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget. - allow activation/testing of a fix for suspected missing term in ocn-ice heat budget (to be confirmed). To test this, you want to undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
- unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT is now the default, and the old default constant freezing point is recovered with SEAICE_tempFrz0 = -1.96, SEAICE_dTempFrz_dS = 0., - retire SEAICE_freeze that was the old way of specifycing the constant freezing point. - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there. - bug fix (thanks to M. Losch) : the sublimation term that was missing is now activated. To reproduce old results that had this bug define SEAICE_DISABLE_SUBLIM. - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211) was wrong for SIsal0.NE.0. Changes cs32x15 results (see upcoming checkin for detail). - bug fix (thanks to O. Jahn) : area loss for melting got messed up in seaice_growth r149 for legacy branch (no results change). - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code from I. Fenty). - results did not change except for global_ocean.cs32x15, mostly due to the switch to variable freezing point (see upcoming checkin of results for details).
- replace with run time parameters SEAICE_doOpenWaterGrowth, SEAICE_doOpenWaterMelt SEAICE_areaLossFormula, SEAICE_areaGainFormula the now retired CPP switches SEAICE_OCN_MELT_ACT_ON_AREA, SEAICE_DO_OPEN_WATER_GROWTH SEAICE_DO_OPEN_WATER_MELT, FENTY_AREA_EXPANSION_CONTRACTION - added checks : retired CPPs and consistency of run time params - only changes global_ocean.cs32x15 fwd result at truncation level (cgd2d 11) - couple things left to polish (soon) : seaice_summary and d_AREAbyATM, d_AREAbyICE, d_AREAbyOCN diags
pkg/seaice : turbulent flux term specification via run time params. - replace CPP switches with run time switches to facilitate testing - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX, GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR - added runtime parameter : SEAICEturbFluxFormula - move Mcphee constants to SEAICE_PARAMS.h - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula; SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply); remove seaice_summary call (moved to seaice_init_fixed) - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms) - seaice_summary.F : add missing report of read turbulent flux term set up (and SITRACER). - seaice_check.F : check range; inform and stop if retired CPPs are used (incl. SEAICE_AGE). - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without CPP switch, same computation as before for the different options.
Remove option SEAICE_SOLVE4TEMP_LEGACY
- removal of the old way of seaice age tracer, which is now replaced by particular cases of SITRACER. - retired params : SEAICEadvAge, SEAICEadvSchAge, SEAICEdiffKhAge, IceAgeTrFile. - added to SITRACER : IceAgeTrFile, check pickups, monitor, output.
move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h", outside of the #ifdef ALLOW_THISPKG / #endif block.
More useless code saved for posterity: FV-discretization of the B-grid LSOR solver, turn on with SEAICE_LSRBNEW. This solver also involves a slight re-organization of the calling routine dynsolver, so that B and C-grid code look a a little more alike.
- added SEAICE_HEAT_CONSERV_FIX as undef in SEAICE_OPTIONS.h
add missing "#ifdef ALLOW_SEAICE / #endif" (but always include CPP_OPTIONS.h ; to become new standard)
- generic seaice tracer CPP options (ALLOW_SITRACER & ALLOW_SITRACER_ADVCAP).
- use Ian Fenty's capping formulas for actual ice thickness thoughout EVOLUTION branch. - put treatment pathological case #2) in CPP brackets (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default). - update global_ocean.cs32x15 and 1D_ocean_ice_column results accordingly
Renaming of compile time flag SEAICE_SALINITY to SEAICE_VARIABLE_SALINITY and SEAICE_salinity to SIsalFRAC. Added logical checks for the use of the retired variable names in seaice_readparms and seaice_check. ---------------------------------------------------------------------- Modified Files: pkg/autodiff/autodiff_restore.F pkg/autodiff/autodiff_store.F pkg/obcs/obcs_apply_seaice.F pkg/seaice/SEAICE.h pkg/seaice/SEAICE_OPTIONS.h pkg/seaice/SEAICE_PARAMS.h pkg/seaice/seaice_ad_check_lev1_dir.h pkg/seaice/seaice_advdiff.F pkg/seaice/seaice_check.F pkg/seaice/seaice_diagnostics_state.F pkg/seaice/seaice_growth.F pkg/seaice/seaice_init_varia.F pkg/seaice/seaice_model.F pkg/seaice/seaice_monitor.F pkg/seaice/seaice_output.F pkg/seaice/seaice_read_pickup.F pkg/seaice/seaice_readparms.F pkg/seaice/seaice_write_pickup.F ----------------------------------------------------------------------
remove SEAICE_AGE_VOL
remove tabs
Reverting seaice_growth to v 1.111 in order to have code with exact bit compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced runtime flag SEAICEareaFormula is kept but is inactive The code is now consistent with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge/documentation/Seaice_Growth_Forward_and_Adjoint_comparisons.pdf Modified Files: doc/tag-index pkg/seaice/SEAICE_OPTIONS.h pkg/seaice/seaice_diagnostics_init.F pkg/seaice/seaice_growth.F verification/global_ocean.cs32x15/code/SEAICE_OPTIONS.h verification/global_ocean.cs32x15/code_ad/SEAICE_OPTIONS.h
- replace d_AREAbyOCN with d_AREA, which is now split in d_AREAbyOCN/d_AREAbyATM_cover/d_AREAbyATM_open - simplify notations -- d_HEFFbyOCNonICE->d_HEFFbyOCN, d_HEFFbyATMonOCN-> d_HEFFbyATM, etc. - introduce SEAICEareaFormula run time parameter, which selects the recipe for computing the ice cover tendency from effective thickness tendencies. It ranges between 1 and 3: -SEAICEareaFormula=1 default in LEGACY branch -SEAICEareaFormula=2 default in EVOLUTION branch -SEAICEareaFormula=3 Ian Fenty's recipe - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using SEAICEareaFormula
- for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's. - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to also melt ice.
- McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
changed to "#define SEAICE_GROWTH_LEGACY" (will set it back to #undef once it's tested in one of the verification exp)
move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h : this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH & SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY
free drift complementary pieces.
SEAICE_AGE_VOL: adding option to use volume instead of area for integrating SEAICE_AGE
indenting #ifdef's for readability
- add CPP flag to include clipping of zeta in EVP code; although clipping of zeta is not necessary for EVP and not recommended it was done by default, therefore the flag is defined by default
- add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
removing climatological forcing option and comments from pkg/seaice
Added SEAICE_CLIM_AIR code, which permits modulation of surface air temperature and humidity over sea ice based on climatological values.
change a few defaults: B-grid flags (not tested in verification, so no effect) turn on flooding by default turn on advection of snow by default
added sea ice age tracer; #define SEAICE_AGE in SEAICE_PARAMS.h
add a new flag SEAICEuseTEM to use a slightly different ice rheology (so-called truncated ellipse, that gets rid of tensile stress); for now this is only available for the C-grid code and also within #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code default is to not use it.
o pkg/seaice: use different time constant for melting (SEAICE_gamma_t) and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
- reformulated availHeat in seaice_growth.F to be independent of AREA
o pkg/seaice: removed SEAICE_FFIELDS.h and seaice_get_forcing.F seaice forcing fields can now be read only through pkg/exf
adding ice salinity HSALT as a prognostic variable
changed/added comments for the SEAICE_TEST_ICE_STRESS_1 and for the EXPLICIT_SSH_SLOPE CPP flags
applied OBCS T/S mask to HEFFM sea ice mask This fixes pkg/seaice OBCS problem but in my opinion this information should eventually be transferred to the GRID.h arrays: hFacC, maskC, etc.
* commented out cap of HICE: it helps keep ice thinner * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
remove ALLOW_SEAICE from exf pkg files and add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h
- case undef SEAICE_EXTERNAL_FORCING & defined SEAICE_EXTERNAL_FLUXES is not working with current implemetation: try to make it clear in SEAICE_OPTIONS.h - limit the number of option combinations: stop if both SEAICE_EXTERNAL_FLUXES & ALLOW_ATM_WIND are #undef. - add corresponding stops in seaice_check.F
add all needed EXF #ifdef and define them in SEAICE_OPTIONS.h if not using EXF
change comments
added "#undef ALLOW_SEAICE_FLOODING" to SEAICE_OPTIONS.h
o fix multi-category seaice: - change cpp flag SEAICE_MULTILEVEL to more meaningful name: SEAICE_MULTICATEGORY - fix short wave heat flux o replace field areaLoc by scalar variable
changes: SEAICE_CGRID is now the default (and allow to use EVP solver)
fix typo
seaice: add an EVP solver following Hunke and Dukowicz (1997) and the documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only with SEAICE_CGRID defined. Use at own risk.
- add c-grid version of the dynamic solver:
+ three new routines that are the c-grid substitute lsr, dynsolver
and ostres
+ put a few fields that were local to dynsolver into global common
blocks, so that I can move the computation of stresses etc into
seaice_lsr (saves coding but may break the adjoint; Patrick, I am
sorry!).
- replace more hardwired parameters by runtime parameters
- add ice masks that mask the rhs of the implicit solvers where there
is no ice (commented out in seaice_dynsolver, because i am not sure
if this works properly), eventually this should replace the clipping
of ice velocities in seaice_dynsolver to +/-40cm/s.
add a cpp-flag to include a simple formula for a salinity depend freezing point of sea water at the surface
o fix mnc flags in pkg/seaice so that they are "owned" by seaice, not mnc -- this mistake was found by JMC and is now corrected
o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
o pkg/seaice: some test code for ice-modified ocean stress
updating verification/lab_sea
pkg/seaice option SEAICE_EXTERNAL_FORCING requires pkg/exf
o first check-in for the "branch-genmake2" merge
o verification suite as run on shelley (gcc 3.2.2):
Wed Oct 8 23:42:29 EDT 2003
T S U V
G D M c m s m s m s m s
E p a R g m m e . m m e . m m e . m m e .
N n k u 2 i a a d i a a d i a a d i a a d
2 d e n d n x n . n x n . n x n . n x n .
OPTFILE=NONE
Y Y Y Y 13 16 16 16 0 16 16 16 16 16 16 16 16 13 12 0 0 pass adjustment.128x64x1
Y Y Y Y 16 16 16 16 0 16 16 16 16 16 16 0 0 16 16 0 0 pass adjustment.cs-32x32x1
Y Y Y Y 16 16 16 16 0 16 16 16 16 16 16 22 0 16 16 22 0 pass adjust_nlfs.cs-32x32x1
Y Y Y Y -- 13 13 16 16 13 13 13 13 16 16 16 16 16 16 16 16 N/O advect_cs
Y Y Y Y -- 22 16 16 16 16 16 16 13 16 16 16 16 16 16 16 16 N/O advect_xy
Y Y Y Y -- 13 16 13 16 16 16 16 16 16 16 22 16 16 16 16 16 N/O advect_xz
Y Y Y Y 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 pass aim.5l_cs
Y Y Y Y 14 16 16 16 16 16 16 16 16 13 16 16 16 16 16 13 16 pass aim.5l_Equatorial_Channel
Y Y Y Y 16 16 16 16 16 16 16 16 16 16 16 13 16 16 13 13 16 pass aim.5l_LatLon
Y Y Y Y 13 16 16 16 16 16 16 16 16 16 13 12 13 13 16 13 16 pass exp0
Y Y Y Y 14 16 16 16 16 16 16 16 22 16 16 16 13 16 16 22 16 pass exp1
Y Y Y Y 13 13 16 13 16 16 16 16 16 13 13 16 16 13 13 13 13 pass exp2
Y Y Y Y 16 16 16 16 16 16 16 16 22 16 16 16 16 16 16 16 16 pass exp4
Y Y Y Y 16 16 16 16 16 16 16 16 16 16 16 22 16 16 16 22 16 pass exp5
Y Y Y Y 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 pass front_relax
Y Y Y Y 14 16 16 13 13 16 16 13 13 16 13 13 16 12 13 13 16 pass global_ocean.90x40x15
Y Y Y Y 10 16 16 13 13 16 13 16 16 13 13 13 13 16 16 13 16 FAIL global_ocean.cs32x15
Y Y Y Y 6 11 12 13 13 12 13 16 13 9 9 9 9 10 9 9 11 FAIL global_ocean_pressure
Y Y Y Y 14 16 16 13 16 16 16 13 13 13 13 13 16 12 16 13 16 pass global_with_exf
Y Y Y Y 14 16 16 16 16 16 16 16 16 11 13 22 13 16 16 9 16 pass hs94.128x64x5
Y Y Y Y 13 16 16 16 16 16 16 16 16 11 16 16 16 13 16 22 13 pass hs94.1x64x5
Y Y Y Y 14 16 16 16 16 16 16 16 16 13 16 13 13 16 16 22 13 pass hs94.cs-32x32x5
Y Y Y Y 10 10 16 13 13 16 16 16 22 16 13 13 13 13 13 22 13 FAIL ideal_2D_oce
Y Y Y Y 8 16 16 16 16 16 16 16 16 13 13 8 16 16 16 16 16 FAIL internal_wave
Y Y Y Y 14 16 16 16 16 16 16 16 16 13 13 22 13 13 13 22 16 pass inverted_barometer
Y Y Y Y 12 16 16 16 16 16 16 16 16 16 13 12 13 13 13 13 13 FAIL lab_sea
Y Y Y Y 11 16 16 16 16 16 16 16 13 13 13 12 13 16 13 12 13 FAIL natl_box
Y Y Y Y 16 16 16 16 16 16 16 16 22 16 16 16 16 16 16 16 16 pass plume_on_slope
Y Y Y Y 13 16 16 16 16 13 16 16 16 16 16 16 16 13 16 16 16 pass solid-body.cs-32x32x1
o Added on-the-fly spatial interpolation capability
"USE_EXF_INTERPOLATION" to pkg/exf.
- This is a temporary Cartesian-grid hack until
the super-duper ESMF coupler becomes available.
- See verification/global_with_exf/README for usage example.
- Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
flags and modified pkg/seaice accordingly.
o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
non-local transport term.
checkpoint50g_post
o merged with release1_p17 (pkg/seaice and verification/lab_sea)
- added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
- LSR sea-ice dynamic solver moved to SouthWest B-grid location and
made the default because of faster convergence than ADI
Merging from release1_p12: o Modifications for using pkg/exf with pkg/seaice - improved description of the various forcing configurations - added basic radiation bulk formulae to pkg/exf - units/sign fix for evap computation in exf_getffields.F - updated verification/global_with_exf/results/output.txt o Added pkg/sbo for computing IERS Special Bureau for the Oceans (SBO) core products, including oceanic mass, center-of-mass, angular, and bottom pressure (see pkg/sbo/README.sbo). o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F to avoid negative values in shallow regions. - updated verification/natl_box/results/output.txt - updated verification/lab_sea/results/output.txt o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F o Added useSingleCpuIO option (see PARAMS.h). o Updated useSingleCpuIO option in mdsio_writefield.F to work with multi-field files, e.g., for single-file pickup. o pkg/seaice: - bug fix in growth.F: QNET for no shortwave case - added HeffFile for specifying initial sea-ice thickness - changed SEAICE_EXTERNAL_FLUXES wind stress implementation o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf, kpp_transport_t.F, forward_step.F, and the_main_loop.F o pkg/seaice: - adjoint-friendly modifications - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
checkpoint47f_post
Merging from release1_p10:
o modifications for using pkg/exf with pkg/seaice
- pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
and SEAICE_EXTERNAL_FLUXES
- pkg/exf CPP options EXF_READ_EVAP and
EXF_NO_BULK_COMPUTATIONS
- usage examples are Experiments 8 and 9 in
verification/lab_sea/README
- verification/lab_sea default experiment now uses
pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
Merging from release1_p8 branch: o New package: pkg/seaice Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle). The sea-ice code is based on Hibler (1979-1980). Two sea-ice dynamic solvers, ADI and LSR, are included. In addition to computing prognostic sea-ice variables and diagnosing the forcing/external data fields that drive the ocean model, SEAICE_MODEL also sets theta to the freezing point under sea-ice. The implied surface heat flux is then stored in variable surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the non-local transport term. Because this call precedes model thermodynamics, temperature under sea-ice may not be "exactly" at the freezing point by the time theta is dumped or time-averaged.
file SEAICE_OPTIONS.h was initially added on branch release1.
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