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revision 1.574 by jmc, Sat Oct 22 22:42:07 2005 UTC revision 1.685 by baylor, Thu Jun 22 19:39:21 2006 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o tracer advection scheme:  o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
8       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
9    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
10    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
11    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
12       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
13    o tracer advection:
14     - clean-up and simplify calc_common_factors.F
15     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
16       advection subroutine (but still not used within DST advection S/R)
17    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
18    
19    checkpoint58j_post
20    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
21      from file (collects calls previously in FORWARD_STEP)
22    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
23    o adjoint store dir. adjusted accordingly
24    o genmake2
25      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
26    
27    checkpoint58i_post
28    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
29      on wind stress (SEAICEstressFactor defaults to 1.)
30    o Total number of Timers is finite (<=40): comment out 2 non-essential one
31      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
32    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
33      on CS-grid: no longer loosing mass.
34    o exf & curvilinear-grid: no longer modify longitude xC & xG.
35    o pkg/ggl90: fix sloppy output and fix a bug
36    o pkg/seaice: added SEAICEuseEVPpickup parameter
37      - Set to false in order to start EVP solver with
38        non-EVP pickup files when using SEAICEuseEVP
39      - fix sign error in diffusion in seaice_calc_rhs
40    
41    checkpoint58h_post
42    * Modifications for bottom topography control
43      o replace hFacC by _hFacC at various places
44      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
45      o add non-self-adjoint cg2d_nsa
46      o update autodiff support routines
47      o re-initialise hfac after ctrl_depth_ini
48      o works for 5x5 box, doesnt work for global_ocean.90x40x15
49    * Adding verification for 5x5 box (4-layer) bottom topography control
50    
51    checkpoint58g_post
52    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
53       used for mean seasonal cycle, mean diurnal cycle); add an example
54       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
55    o pkg/ggl90:
56      - add parameter (minimum surface kinetic energy)
57      - fix bug (avoiding division by zero)
58    o couple pkg/thsice to pkg/seaice:
59      - modify advection in seaice to accomodate new scalar fields to be advected
60      - only muliDimAdection scheme work with seaice/thsice
61      - mapping of thsice-variables to seaice-variables, back and forth
62      - does not break the verification experiments, but does not give the
63        desired results either
64    o pkg/seaice
65      - make (default) second order advection a bit less confusing?
66    
67    checkpoint58f_post
68    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
69      to pkg/seaice):
70      - new routines thsice_map_exf and thsice_get_exf provide the interface
71      - add an additional formal parameter to thsice_solve4temp
72    o pkg/exf:
73      - add new fields wspeed, snowprecip (to be able to couple to thsice)
74      - correct Stefan-Boltzmann constant
75      - new parameter for longwave surface emittance
76      - separate some stuff from exf_bulkformulae into new routines  
77        exf_radiation, exf_wind
78      - add new parameters and constants: longwave emissivity for ocean, ice
79        and snow, evaporation parameters over ice
80      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
81        either wind from stress or stress from wind
82    o pkg/thSIce:
83    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
84    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
85       and THSICE_CALC_THICKN
86    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
87    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
88      to make debugging easier.
89    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
90    o pkg/bulk_force:
91      - clean-up comments and parameters ;
92      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
93    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
94      generate new output for test-experiment: aim.5l_cs.thSI
95    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
96      testreport accordingly
97    
98    checkpoint58e_post
99    o SEAICE_CGRID adjoint done
100    o R_STAR adjoint implemented.
101      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
102      * need to sort out init. of h0facc, etc.
103    o Make pkg/profile fully independent of ecco,cost, etc. stuff
104      to be able to use it in pure forward.
105    
106    checkpoint58d_post
107    o upgrade simple test-experiment to tutorial example:
108     step.1: duplicate the experiment and (step.2) will remove the old copy.
109      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
110      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
111      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
112      tutorial_global_oce_biogeo    <- copy of dic_example
113      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
114      tutorial_plume_on_slope       <- copy of plume_on_slope
115      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
116      tutorial_global_oce_optim     <- empty for now (David ?)
117      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
118     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
119    o correct a sign problem in cost_scat.F
120    o obcs and ptracers: fix boundary conditions for advections schemes
121      with larger stencil
122    o thsice adjoint: start
123    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
124      completeness
125    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
126      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
127    o ptracers adjoint:
128      * avoid extensive recomputatations
129      * fix missing re-init. of gptr (missed by TAF)
130    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
131      me to turn off the excessive output to STDOUT that this package produces
132    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
133      and add those terms in Vector-Invariant formulation.
134    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
135      if the control period (xx_hfluxperiod etc) is 0
136    o in profiles pkg, clean routines and fix details
137    o in ecco pkg, reading ssh data:
138      fix problem in case the model does not start at iter0=0
139    o fix mnc-pickup/restart for ptracers
140    o new package prifiles:
141      code to compute profile-based cost by Gael Forget
142      (modifs in ecco, ctrl, autodiff)
143    o Benign bug fix in initialization (spotted by M. Mazloff) of
144      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
145    
146    checkpoint58c_post
147    o adjoint: finish NLFS adjoint and provide reference output in
148      verification/global_ocean.90x40x15/results_ad_nlfs
149    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
150      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
151      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
152      with SEAICE_CGRID defined.
153    o move calendarDumps from "data" to "data.cal" and clean-up the code
154      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
155    o add useEXF & useCAL flags (for now, set in hard-coded way)
156    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
157      (were missing in NH mode, and wrong in quasihydrostatic mode).
158      waiting for Chris updated version of calc_gw to add those CALLs.
159    o fix bug in quasihydrostatic S/R ;
160      add a test for this option: global_ocean.90x40x15.qshyd
161    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
162      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
163    o add on/off flag useOffLine for package OFFLINE
164    o seaice:
165      - modify advection so that it works also on the C-grid
166      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
167        problem in multi-tile runs with C-grid
168      - add flags for clipping ice velocities and/or masking solver forcing
169      - fix drag (ocean on ice) formulation and a bug that caused noise in the
170        C-grid solver
171      - added a few comments to seaice_diffusion.F
172      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
173        are now exclusive)
174      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
175        required re-ordering the code a little:
176       + make DAIRN global variable (defined in SEAICE)
177       + move computation of the viscosities eta and zeta into a new separate
178         routine (because I need to recompute them in seaice_ocean_stress.F)
179    
180    checkpoint58b_post
181    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
182      update output.txt of exp. aim.5l_cs.thSI
183    o various mnc cleanups and improvements:
184      + shrink lookup tables by factor of ~4
185      + better error reporting when running out of lookup space
186      + able to handle longer path/file names (up to 500 chars)
187    o adjoint:
188      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
189      - TBD: "hidden" mom_vecinv recomp. in dynamics
190    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
191     (allow to differentiate between forcing components using new integer flags:
192      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
193     and add new flag to put Dissipation tendency out of Adams-Bashforth.
194    o ecco
195      - enable trend removal from SSH anomaly obs.
196    o adjoint
197      - a fix for PmEpR when #undef EXACT_CONSERV
198      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
199      - try to fix "hidden" recomp. in forward_step for NLFS
200        (NLFS seems broken sometimes after I checked it in)
201    o seaice:
202     - add c-grid version of the dynamic solver:
203       + three new routines that are the c-grid substitute lsr, dynsolver
204         and ostres
205       + put a few fields that were local to dynsolver into global common
206         blocks, so that I can move the computation of stresses etc into
207         seaice_lsr (saves coding but may break the adjoint).
208     - replace more hardwired parameters by runtime parameters
209     - add ice masks that mask the rhs of the implicit solvers where there
210       is no ice (commented out in seaice_dynsolver, because i am not sure
211       if this works properly), eventually this should replace the clipping
212       of ice velocities in seaice_dynsolver to +/-40cm/s.
213    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
214      include it only where its needed
215    o move balancing of fluxes before the call of external_forcing_surf
216    o seaice:
217      - correct units of turning angles (now they are really in degrees)
218      - move computation of GWATX/Y out of main routine into dynsolver
219      - initialize GWATX/Y in seaice_init
220    o Apply mask on Fresh-Water flux (needed for SSH forcing).
221      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
222    o seaice: add runtime flags for turning angles (default to zero)
223    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
224      and trend from exf forcing and ctrl control adjustments
225    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
226      (since checkpoint57x_post)
227    o change the default rotation period to 86164.s = the Earth rotation
228    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
229      and based on a reference stratification. Tested within hs94.cs-32x32x5.
230    o seaice advection: add code for choosing between the default (2nd order
231      central differences) and multiDim advection schemes provided by
232      pkg/generic_advdiff
233    o seaice:
234      - removed all references to SEAICE_GRID.h fields from
235        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
236        (cubed-sphere configuration will change a little)
237      - grid computations in seaice_init are obsolete now.
238      - cleaned up code a little so that is easier to read (hopefully).
239      - added new (better?) discretizations of default advection and diffusion
240        (turn on with SEAICEuseFluxForm)
241      - replace 1 in 3d global fields by kSurface in growth.F
242      
243    checkpoint58a_post
244    o seaice:
245      - bug fix in advect.F
246    o shelfice:
247      - separate shelfice load anomaly from pload (breaks with time
248        dependent forcing), => introduce constant field shelficeLoadAnomaly.
249        Its default is 0., but it may be computed more cleverly from (unknown)
250        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
251        done offline. A good approximation of the pressure load anomaly is
252        necessary to avoid large initial adjustment processes underneath
253        deep-reaching shelfice.
254      - small fix in ISOMIP shelfice_thermodynamics
255      - add more sophisticated thermodynamics of Hellmer (1989), this is
256        now the default
257      - give a few constants more intuitive names
258    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
259      if bulk formulae are used in long integration (especially EmPmR). Turn
260      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
261      if balancePrintMean, the imbalance that is substracted is printed to
262      STDOUT.
263    o fix bug (typo) in obcs_apply_eta.F
264    o add a new package shelfice which enables us to model the circulation
265      underneath shelf-ice with draughts of hundreds of meters.
266     - works
267     - to do: + include improved thermodynamics
268              + check whether kSurfC (from model/inc/SURFACE.h) can be used
269                instead of new field kTopC
270              + can we use topoFile, Ro_surf and existing code in ini_depth.F
271                instead of new field R_shelfIce and new code in ini_depth.F
272                and ini_mask_etc.F?
273              + adjust vertical mixing schemes?
274    o seaice pkg:
275     - add a cpp-flag to include a simple formula for a salinity dependent
276       freezing point of sea water at the surface
277     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
278       meridional stresses are now different (and hopefully correct)
279    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
280       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
281       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
282    o pkg/diagnostics: add options and parameters for regional-statistics
283       diagnostics ; define regions by reading a region-mask from a file
284       (might add other options later)
285    o pkg/bulk_force:
286     - add option and parameters to use AIM surface-flux formulae.
287     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
288       others forcing fields (defined in PARM05, parameter file "data") are loaded
289       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
290     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
291     - use the right EXCH call for uwind,vwind (to work on CS-grid).
292     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
293       and parameters (note: calcWindStress replaces .NOT.readwindstress).
294     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
295    
296    checkpoint58
297    o add "--embed-source" option to genmake2 which, when the supporting
298      tools can be compiled (as determined by genmake2) will turn on the
299      embed_files package which then embeds the entire MITgcm source code
300      (*.[fFhc] + Makefile) used for the build within the executable
301      - requested by CNH but off by default
302      - adds a paltry <9MB to the mitgcmuv executable in most cases
303      - only writes the output when useEMBEDSRC in eedata is true
304    o clean up 3-dim. relaxation codes:
305      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
306      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
307      * Thanks to Tom Haine for testing!
308    
309    checkpoint57z_post
310    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
311      affects output (@ truncation level) of exp. plume_on_slope ; updated.
312    o fix the pickup behavior for obcs in combination with ptracers
313    o fix a bug in ptracers_external_fields_load
314    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
315      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
316    o transfered surface NH pressure to eta field (if exactConserv).
317    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
318         and update lab_sea output.txt file.
319    o completing 3-dim. relaxation code: additional term
320         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
321      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
322      * At compile time, in "EXF_OPTIONS.h" set
323          #define  ALLOW_CLIMTEMP_RELAXATION
324          #define  ALLOW_CLIMSALT_RELAXATION
325      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
326          tauThetaClimRelax3Dim = 15552000.0,
327          tauSaltClimRelax3Dim  = 15552000.0,
328      * 3 cases:
329          1) Use a constant-in-time 3-dim. field
330          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
331          3) Real-time relax. to time-evolving prescribed field
332    o Adding Laplacian-type smoothness constraint on
333      initial and boundary (forcing) controls (ic, bc)
334      * enable at compile-time via
335        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
336      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
337      * Absolute scale somewhat unclear so far
338      * no area weighting was included since no other cost term does so far
339    
340    checkpoint57y_post
341    First step for a NLFS adjoint
342    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
343    o new init. routines for calc_r_star, calc_surf_dr
344    o still need to deal with ini_masks_etc
345    o testreport seemed happy
346    checkpoint57y_pre
347    
348    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
349    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
350    o add new offset feature to offline pkg (plus minor cleanup)
351    o cfc fixes for final year of integration
352    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
353      be in GCHEM_OPTIONS).
354    
355    checkpoint57x_post
356    o fix testreport Pb in multiple test experiment.
357    o cleanup our namelist syntax in verification:
358      - make it more F95 standards compliant (some work still needed)
359      - allows the vast majority of our tests to work with gfortran
360    o Non-Hydrostatic:
361     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
362     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
363    o Allow to apply AB on T,S rather than on AB(gT,gS):
364     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
365     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
366       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
367     - need a "clever" read_pickup to restart from the other AB formulation
368    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
369    o remove some unused variables (reduces number of compiler warnings)
370    o adjoint
371      * Disable useVariableViscosity for adjoint for time being
372        (there are a number of extensive recomputations)
373      * Initialize certain variables needed for adjoint
374    
375    checkpoint57w_post
376    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
377                 fix the singleCpuIO RS version of MDSWRITEFIELD
378       and add a WARNING if using globalFiles=T with multi-processors.
379    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
380      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
381    o tracer advection scheme:
382    add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get    add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
383     those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,     those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
384     was not very convenient).     was not very convenient).

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