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revision 1.548 by jmc, Mon Sep 19 01:27:43 2005 UTC revision 1.664 by jmc, Mon Jun 5 15:06:51 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  diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".  checkpoint58f_post
8    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
9      to pkg/seaice):
10      - new routines thsice_map_exf and thsice_get_exf provide the interface
11      - add an additional formal parameter to thsice_solve4temp
12    o pkg/exf:
13      - add new fields wspeed, snowprecip (to be able to couple to thsice)
14      - correct Stefan-Boltzmann constant
15      - new parameter for longwave surface emittance
16      - separate some stuff from exf_bulkformulae into new routines  
17        exf_radiation, exf_wind
18      - add new parameters and constants: longwave emissivity for ocean, ice
19        and snow, evaporation parameters over ice
20      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
21        either wind from stress or stress from wind
22    o pkg/thSIce:
23    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
24    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
25       and THSICE_CALC_THICKN
26    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
27    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
28      to make debugging easier.
29    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
30    o pkg/bulk_force:
31      - clean-up comments and parameters ;
32      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
33    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
34      generate new output for test-experiment: aim.5l_cs.thSI
35    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
36      testreport accordingly
37    
38    checkpoint58e_post
39    o SEAICE_CGRID adjoint done
40    o R_STAR adjoint implemented.
41      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
42      * need to sort out init. of h0facc, etc.
43    o Make pkg/profile fully independent of ecco,cost, etc. stuff
44      to be able to use it in pure forward.
45    
46    checkpoint58d_post
47    o upgrade simple test-experiment to tutorial example:
48     step.1: duplicate the experiment and (step.2) will remove the old copy.
49      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
50      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
51      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
52      tutorial_global_oce_biogeo    <- copy of dic_example
53      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
54      tutorial_plume_on_slope       <- copy of plume_on_slope
55      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
56      tutorial_global_oce_optim     <- empty for now (David ?)
57      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
58     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
59    o correct a sign problem in cost_scat.F
60    o obcs and ptracers: fix boundary conditions for advections schemes
61      with larger stencil
62    o thsice adjoint: start
63    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
64      completeness
65    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
66      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
67    o ptracers adjoint:
68      * avoid extensive recomputatations
69      * fix missing re-init. of gptr (missed by TAF)
70    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
71      me to turn off the excessive output to STDOUT that this package produces
72    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
73      and add those terms in Vector-Invariant formulation.
74    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
75      if the control period (xx_hfluxperiod etc) is 0
76    o in profiles pkg, clean routines and fix details
77    o in ecco pkg, reading ssh data:
78      fix problem in case the model does not start at iter0=0
79    o fix mnc-pickup/restart for ptracers
80    o new package prifiles:
81      code to compute profile-based cost by Gael Forget
82      (modifs in ecco, ctrl, autodiff)
83    o Benign bug fix in initialization (spotted by M. Mazloff) of
84      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
85    
86    checkpoint58c_post
87    o adjoint: finish NLFS adjoint and provide reference output in
88      verification/global_ocean.90x40x15/results_ad_nlfs
89    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
90      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
91      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
92      with SEAICE_CGRID defined.
93    o move calendarDumps from "data" to "data.cal" and clean-up the code
94      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
95    o add useEXF & useCAL flags (for now, set in hard-coded way)
96    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
97      (were missing in NH mode, and wrong in quasihydrostatic mode).
98      waiting for Chris updated version of calc_gw to add those CALLs.
99    o fix bug in quasihydrostatic S/R ;
100      add a test for this option: global_ocean.90x40x15.qshyd
101    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
102      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
103    o add on/off flag useOffLine for package OFFLINE
104    o seaice:
105      - modify advection so that it works also on the C-grid
106      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
107        problem in multi-tile runs with C-grid
108      - add flags for clipping ice velocities and/or masking solver forcing
109      - fix drag (ocean on ice) formulation and a bug that caused noise in the
110        C-grid solver
111      - added a few comments to seaice_diffusion.F
112      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
113        are now exclusive)
114      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
115        required re-ordering the code a little:
116       + make DAIRN global variable (defined in SEAICE)
117       + move computation of the viscosities eta and zeta into a new separate
118         routine (because I need to recompute them in seaice_ocean_stress.F)
119    
120    checkpoint58b_post
121    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
122      update output.txt of exp. aim.5l_cs.thSI
123    o various mnc cleanups and improvements:
124      + shrink lookup tables by factor of ~4
125      + better error reporting when running out of lookup space
126      + able to handle longer path/file names (up to 500 chars)
127    o adjoint:
128      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
129      - TBD: "hidden" mom_vecinv recomp. in dynamics
130    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
131     (allow to differentiate between forcing components using new integer flags:
132      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
133     and add new flag to put Dissipation tendency out of Adams-Bashforth.
134    o ecco
135      - enable trend removal from SSH anomaly obs.
136    o adjoint
137      - a fix for PmEpR when #undef EXACT_CONSERV
138      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
139      - try to fix "hidden" recomp. in forward_step for NLFS
140        (NLFS seems broken sometimes after I checked it in)
141    o seaice:
142     - add c-grid version of the dynamic solver:
143       + three new routines that are the c-grid substitute lsr, dynsolver
144         and ostres
145       + put a few fields that were local to dynsolver into global common
146         blocks, so that I can move the computation of stresses etc into
147         seaice_lsr (saves coding but may break the adjoint).
148     - replace more hardwired parameters by runtime parameters
149     - add ice masks that mask the rhs of the implicit solvers where there
150       is no ice (commented out in seaice_dynsolver, because i am not sure
151       if this works properly), eventually this should replace the clipping
152       of ice velocities in seaice_dynsolver to +/-40cm/s.
153    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
154      include it only where its needed
155    o move balancing of fluxes before the call of external_forcing_surf
156    o seaice:
157      - correct units of turning angles (now they are really in degrees)
158      - move computation of GWATX/Y out of main routine into dynsolver
159      - initialize GWATX/Y in seaice_init
160    o Apply mask on Fresh-Water flux (needed for SSH forcing).
161      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
162    o seaice: add runtime flags for turning angles (default to zero)
163    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
164      and trend from exf forcing and ctrl control adjustments
165    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
166      (since checkpoint57x_post)
167    o change the default rotation period to 86164.s = the Earth rotation
168    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
169      and based on a reference stratification. Tested within hs94.cs-32x32x5.
170    o seaice advection: add code for choosing between the default (2nd order
171      central differences) and multiDim advection schemes provided by
172      pkg/generic_advdiff
173    o seaice:
174      - removed all references to SEAICE_GRID.h fields from
175        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
176        (cubed-sphere configuration will change a little)
177      - grid computations in seaice_init are obsolete now.
178      - cleaned up code a little so that is easier to read (hopefully).
179      - added new (better?) discretizations of default advection and diffusion
180        (turn on with SEAICEuseFluxForm)
181      - replace 1 in 3d global fields by kSurface in growth.F
182      
183    checkpoint58a_post
184    o seaice:
185      - bug fix in advect.F
186    o shelfice:
187      - separate shelfice load anomaly from pload (breaks with time
188        dependent forcing), => introduce constant field shelficeLoadAnomaly.
189        Its default is 0., but it may be computed more cleverly from (unknown)
190        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
191        done offline. A good approximation of the pressure load anomaly is
192        necessary to avoid large initial adjustment processes underneath
193        deep-reaching shelfice.
194      - small fix in ISOMIP shelfice_thermodynamics
195      - add more sophisticated thermodynamics of Hellmer (1989), this is
196        now the default
197      - give a few constants more intuitive names
198    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
199      if bulk formulae are used in long integration (especially EmPmR). Turn
200      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
201      if balancePrintMean, the imbalance that is substracted is printed to
202      STDOUT.
203    o fix bug (typo) in obcs_apply_eta.F
204    o add a new package shelfice which enables us to model the circulation
205      underneath shelf-ice with draughts of hundreds of meters.
206     - works
207     - to do: + include improved thermodynamics
208              + check whether kSurfC (from model/inc/SURFACE.h) can be used
209                instead of new field kTopC
210              + can we use topoFile, Ro_surf and existing code in ini_depth.F
211                instead of new field R_shelfIce and new code in ini_depth.F
212                and ini_mask_etc.F?
213              + adjust vertical mixing schemes?
214    o seaice pkg:
215     - add a cpp-flag to include a simple formula for a salinity dependent
216       freezing point of sea water at the surface
217     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
218       meridional stresses are now different (and hopefully correct)
219    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
220       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
221       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
222    o pkg/diagnostics: add options and parameters for regional-statistics
223       diagnostics ; define regions by reading a region-mask from a file
224       (might add other options later)
225    o pkg/bulk_force:
226     - add option and parameters to use AIM surface-flux formulae.
227     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
228       others forcing fields (defined in PARM05, parameter file "data") are loaded
229       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
230     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
231     - use the right EXCH call for uwind,vwind (to work on CS-grid).
232     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
233       and parameters (note: calcWindStress replaces .NOT.readwindstress).
234     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
235    
236    checkpoint58
237    o add "--embed-source" option to genmake2 which, when the supporting
238      tools can be compiled (as determined by genmake2) will turn on the
239      embed_files package which then embeds the entire MITgcm source code
240      (*.[fFhc] + Makefile) used for the build within the executable
241      - requested by CNH but off by default
242      - adds a paltry <9MB to the mitgcmuv executable in most cases
243      - only writes the output when useEMBEDSRC in eedata is true
244    o clean up 3-dim. relaxation codes:
245      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
246      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
247      * Thanks to Tom Haine for testing!
248    
249    checkpoint57z_post
250    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
251      affects output (@ truncation level) of exp. plume_on_slope ; updated.
252    o fix the pickup behavior for obcs in combination with ptracers
253    o fix a bug in ptracers_external_fields_load
254    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
255      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
256    o transfered surface NH pressure to eta field (if exactConserv).
257    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
258         and update lab_sea output.txt file.
259    o completing 3-dim. relaxation code: additional term
260         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
261      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
262      * At compile time, in "EXF_OPTIONS.h" set
263          #define  ALLOW_CLIMTEMP_RELAXATION
264          #define  ALLOW_CLIMSALT_RELAXATION
265      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
266          tauThetaClimRelax3Dim = 15552000.0,
267          tauSaltClimRelax3Dim  = 15552000.0,
268      * 3 cases:
269          1) Use a constant-in-time 3-dim. field
270          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
271          3) Real-time relax. to time-evolving prescribed field
272    o Adding Laplacian-type smoothness constraint on
273      initial and boundary (forcing) controls (ic, bc)
274      * enable at compile-time via
275        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
276      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
277      * Absolute scale somewhat unclear so far
278      * no area weighting was included since no other cost term does so far
279    
280    checkpoint57y_post
281    First step for a NLFS adjoint
282    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
283    o new init. routines for calc_r_star, calc_surf_dr
284    o still need to deal with ini_masks_etc
285    o testreport seemed happy
286    checkpoint57y_pre
287    
288    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
289    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
290    o add new offset feature to offline pkg (plus minor cleanup)
291    o cfc fixes for final year of integration
292    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
293      be in GCHEM_OPTIONS).
294    
295    checkpoint57x_post
296    o fix testreport Pb in multiple test experiment.
297    o cleanup our namelist syntax in verification:
298      - make it more F95 standards compliant (some work still needed)
299      - allows the vast majority of our tests to work with gfortran
300    o Non-Hydrostatic:
301     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
302     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
303    o Allow to apply AB on T,S rather than on AB(gT,gS):
304     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
305     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
306       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
307     - need a "clever" read_pickup to restart from the other AB formulation
308    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
309    o remove some unused variables (reduces number of compiler warnings)
310    o adjoint
311      * Disable useVariableViscosity for adjoint for time being
312        (there are a number of extensive recomputations)
313      * Initialize certain variables needed for adjoint
314    
315    checkpoint57w_post
316    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
317                 fix the singleCpuIO RS version of MDSWRITEFIELD
318       and add a WARNING if using globalFiles=T with multi-processors.
319    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
320      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
321    o tracer advection scheme:
322      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
323       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
324       was not very convenient).
325      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
326       (further tests needed for the implicit DST & Flux-Limiter schemes).
327    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
328      and sRef for convenience, handy, when you want to initialize
329      ptracers in a large domain with a constant non-zero value. Also,
330      untangle ptracers_init.F a little.
331    
332    checkpoint57v_post
333    o change dome exp. to use variable viscosity in side-drag terms.
334    o remove all the files from the cfc_offline test since they are now
335      incorporated into tutorial_cfc_offline which has been producing
336      identical results for a few days of testing
337    o add new parameter: sideDragFactor to enable half-slip-side BC
338      and change side-drag S/R to use viscosity from mom_calc_visc
339      (can switch back by setting sideDragFactor=0.); affects results at
340      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
341       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
342    o vorticity & strain are now computed without masking, to account for
343      no-slip-side BC in variable viscosity calculation ; mask is applied
344      anyway later on, before computing advection/coriolis terms.
345    o modify exp4 to test new obcs support for reading from external files
346      and for passive tracers
347    o fix behavior of ptracers_monitor when monitor output is written to a
348      netcdf-file; still not independent of monitor.F (writes in the same
349      file).
350    o change default value of tRef (put a uniform, meaningful value for ocean
351      & atmos) and initialize sRef (was missing, as Martin mentioned).
352    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
353      to be proportional to enstrophy dissipation length.  Thus,
354       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
355      This is now consistent with Smagorinsky and with the manual.
356    
357    checkpoint57u_post
358    o OBCS and PTRACERS: add open boundary support for passive tracers
359      - either use homogenous (pseudo) v.Neumann conditions or prescribe
360        OB-values from file; this is not different from the way theta and salinity
361        are treated
362      - however, Orlanski-radiation conditions are not supported, and the model
363        will stop if you use pTracers and Orlanski at the same time.
364      - beefed up the rountine obcs_external_fields_load: now only those open
365        boundary values are overwritten with values from files for which there
366        are really files, otherwise the OB-fields remain untouched. This makes
367        it possible to use different OBs at different ends of the domain (as
368        with EXF)
369    o reduce number of exch calls in shap_filt (s2).
370    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
371      truncation level) 4/5 MLAdjust test results (11&12 digits match).
372    
373    checkpoint57t_post
374    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
375    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
376      same truncation, independent of the face number: affects affects several
377      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
378    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
379      note that biharmonic viscosity + no-slip was not tested in any experiment.
380    o fix bug in non-linear free-surf side-drag ; generate new output for
381      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
382    o make mnc honor the writeBinaryPrec flag for most kinds of output
383    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
384    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
385      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
386    o add brackets in multi-terms sum to get same truncation, independent of
387      the face number (manage to get exactly same value of gU,gV at the cs-edge)
388      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
389    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
390      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
391      a maximum grid-scale Reynolds number.  Also, changes all length calculations
392      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
393      Suggested values of viscosity parameters found in mom_calc_visc.
394      Many new viscosity diagnostics available.
395    
396    checkpoint57s_post
397    o Add clearing-house for viscosity calculations, mom_calc_visc and
398      correct numerous bugs in LeithD and Smagorinsky discretizations.  
399      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
400      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
401      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
402      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
403      The Strain-Tension form is now called with useStrainTensonVisc=.true.
404      ViscAhStrain and viscAhTension are now retired.
405    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
406  o In response to JMC's bug report, genmake2 now ignores any soft-links  o In response to JMC's bug report, genmake2 now ignores any soft-links
407    that it finds in the *current* directory when searching for files.    that it finds in the *current* directory when searching for files.
408    Soft-links found in any other source directories will still work as    Soft-links found in any other source directories will still work as

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