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revision 1.1760 by mlosch, Tue Nov 6 12:31:30 2012 UTC revision 1.1896 by jmc, Thu Jul 18 20:06:01 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o pkg/seaice/seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes  o pkg atm_ & ocn_compon_interf:
8    a serious convergence problem when open boundaries are involved    - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
9  o pkg/ggl90: fix computation of control volumes for the case of      staggerTimeStep implementation) and disable (retired) corresponding
10        parameter.
11    o pkg/offline:
12      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
13      - add S/R OFFLINE_CHECK to print offline parameter summary
14        and stop if loading a file that is not used;
15      - enable to calculate GMRedi tensor, KPP mixing and convective index
16        when the corresponding file(s) is/are not specified (but pkg is used).
17      - comment out resetting of monitorFreq (to endTime) since it still useful
18        for monitoring CFL numbers and checking offline fields.
19    o OpenAD:
20      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
21        smaller standard output) and generate new (smaller) output (on baudelaire
22        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
23    o model/src:
24      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
25        (where external_forcing_adjust was called) and change list of arguments;
26      - merge external_forcing_adjust.F into external_forcing_surf.F
27      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
28        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
29        previously in file "balance_relax.F", now removed); remove corresponding
30        arrays in FFIELDS.h.
31      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
32        a hack for getting back surfaceForcingS (loaded from file) when using
33        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
34      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
35        (was getting only 11 digits for AD-grad, due to different truncation
36         error in AD code).
37    
38    checkpoint64j (2013/07/04)
39    o pkg/offline:
40      - to enable the use of other features with pkg offline (e.g., obcs),
41        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
42      - comment out "allowFreezing" (now active) in 2 offline testing exp.
43    o pkg/exf ALLOW_RUNOFTEMP
44      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
45      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
46      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
47    o pkg/atm_phys:
48      - allows to add some damping on uVel,vVel (strength only function of k).
49    o verification, ad-tests:
50      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
51        global_ocean_ebm and offline_exf_seaice.thsice.
52    o verification/halfpipe_streamice:
53      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
54        flux input boundary conditions to be ignored; a fix for this bug changed
55        verification results for forward test.
56      - add adjoint test.
57    o pkg/ptracers:
58      - allow to restart without SOM pickup (resetting SOM to zero).
59    o pkg/gmredi:
60      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
61      - It uses mixing length theory and suppression by steering level effects to
62        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
63        to JPO, for more details).
64      - It also uses the diffusivity to calculate an eddy induced streamfunction
65        based on a PV closure (rather than a buoyancy closure as in GM).
66      - New files added to pkg/gmredi:
67        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
68          induced overturning streamfunction (called from gmredi_calc_tensor)
69        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
70          for use in gmredi_k3d
71        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
72          the eddy diffusivity
73    
74    checkpoint64i (2013/06/18)
75    o pkg/cheapaml:
76      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
77        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
78        with pkg/cheapaml.
79    o utils/python: add subpackage for cubed sphere function, first example is
80        simple cs.pcol to plot 2D fields on a map
81    o pkg/streamice:
82      - This is a new package in MITgcm, which solves dynamic equations for ice
83         sheets and ice streams
84      - At the moment it is independent of atmosphere/ocean dynamics, or any
85        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
86        ed that this will change)
87      - There is a new verification exercise that tests it, halfpipe_streamice,
88        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
89        rectangular embayment
90      - halfpipe_streamice is forward-only for now, will have TAF test soon
91      - for questions, email dgoldber@mit.edu
92    o pkg/thsice:
93      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
94        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
95      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
96         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
97      - allow precip from pkg/cheapaml to make snow over seaice.
98    o pkg/cfc:
99      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
100      - remove atmos CFC 2-D arrays from common bloc (now local variables)
101      - change some hard-coded constant to run time parameter for reading and
102        and interpolating atmospheric CFC ; keep same default as previously.
103      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
104      - put arguments in standard order: myTime, myIter, myThid
105      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
106        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
107      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
108      - new routine to print summary of CFC params and check for consistency.
109    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
110      similar to thsice_advdiff.
111      Note that for the B-grid case the routine parameters uc/vc are overwritten.
112    o pkg/cfc:
113      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
114        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
115      - fix interpolation of atmphspheric CFC between Sorthern and Northern
116        hemisphere value.
117    o pkg/seaice:
118      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
119    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
120                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
121      - requires an additional time level that is stored in the pickup
122      - you can start with AB2 from a pickup without this time level with
123        pickupStrictlyMatch = .false.
124    
125    checkpoint64h (2013/05/26)
126    o pkg/cheapaml:
127      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
128        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
129      - consistent treatment of uWind,vWind location: assume everywhere in
130        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
131        (Note: was already the case for Tair,Qair advection);
132        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
133      - compute diabatic forcing only in the interior (excluding overlap regions)
134      - fill in array "Qsw" (for short-wave heating);
135      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
136        before any update (consistent with MITgcm state var diagnostics);
137      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
138        non periodic ; + adjusted for uWind,vWind (C-grid).
139    o pkg/seaice:
140      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
141        add explicitly pkg/exf in experiments that currently use pkg/seaice.
142      - allows to compile pkg/seaice without pkg/exf.
143    o tools/OAD_support:
144      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
145        of array "ourStepOf" in function rvNextAction (revolve.F90).
146    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
147      - change pkg name (to be used with other atmospheric physics pkg)
148        but by-pass CVS when making the new pkg so that we keep the CVS history.
149    o pkg/offline:
150      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
151        (previously called from pkg/dic_surfforcing_init.F)
152    o model/src:
153      - re-order sequence of calls within packages_init_variables.F, using
154        standard order, except for:
155         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
156         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
157    o new pkg: atm_phys
158      - add entry point and source code (previously in contrib
159          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
160        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
161      - re-order sequence of calls within packages_readparms.F,
162         packages_init_fixed.F and packages_write_pickup.F
163        (but skip packages_init_variables.F because of TAF issues).
164      - update contrib/*/atm_gray/ experiment.
165    o pkg/seaice (ITD code):
166      - simplify and fix the writing of pickup-files for ITD case
167    o pkg/seaice (ITD code):
168      - introduce floe size dependent lateral melt for ITD case;
169      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
170      - update seaice_itd experiment main output.
171    o pkg/thsice:
172      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
173        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
174        changed accordingly pkg/atm2d.
175    
176    checkpoint64g (2013/05/01)
177    o pkg/exf ALLOW_RUNOFTEMP
178      - if defined,  river and glacier runoff temperature can be read-in from
179        runoftempfile; runoftempfile needs to have same format as runofffile
180    o pkg/thsice (& pkg/bulk_force):
181      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
182        for energy content of Precip + RunOff & Evap (like with pkg/exf).
183      - change computation domain to always be the interior (without overlap).
184      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
185    o verification/tutorial_global_oce_biogeo:
186      - add preliminary OpenAD setup (still has problems)
187    o pkg/seaice:
188      - turn some parameters for choosing the convergence criterion of
189        the inexact Newton method (JFNK) into runtime parameters for convenience
190      - clean up seaice_calc_viscosities.F: remove/retire two options for
191        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
192        the results of lab_sea/input because a division has been replaced by
193        a multiplication with the reciprocal (sumNorm)
194      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
195        convergence of solver (changes results, of course), and to test some
196        new features
197    o model/src:
198      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
199      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
200      - move forcing adjustment (balancing surface forcing) in specific S/R
201        where might also be applied exchanges (if needed) to forcing arrays.
202    o pkg/shelfice:
203      - allow to specify the Ice-Shelf mass per unit area (instead of
204        shelficeLoadAnomaly) and do the conversion from one to the other
205      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
206        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
207        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
208        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
209      - update isomip experiment forward output (get machine truncation error
210        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
211    o verification/offline_exf_seaice:
212      revise data.seaice in input.thermo and input_ad and update results accordingly
213        HO = 0.2, SEAICE_areaLossFormula = 2,
214        SEAICE_growMeltByConv = .TRUE.,
215        SEAICE_doOpenWaterMelt = .TRUE.,
216      Improve consistency with input.thsice and fix the spurious 500m ice corners
217    o verification/global_ocean.cs32x15:
218      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
219        in icedyn (thsice+seaice-dyn) test and update output.
220    o verification/offline_exf_seaice:
221      - adjust list of tested variables (with testreport) and update
222        standard test output with better slection of monitored fields.
223    o pkg/cd_code:
224      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
225        experiment lab_sea.hb87
226    o tools/genmake2:
227      - change default makedepend from the system default to tools/xmakedepend:
228        When no makedepend is specified, select tools/xmakedepend it the test pass,
229        otherwise select the system default (if exist and pass the test) or
230        try to build cyrus-makedepend ; stop if none of the 3 works.
231    o pkg/exf & pkg/thsice:
232      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
233        for energy content of Precip + RunOff & Evap. Assumes:
234       1) Rain has same temp as Air.
235       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
236       3) Run-Off comes at the temp of surface water (with same Cp)
237       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
238        put directly into Latent Heat flux & should use water-vapor heat capacity.
239       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
240        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
241    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
242        (compile when SEAICE_ALLOW_JFNK is defined)
243    o pkg/thsice:
244      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
245        implementation): move THSICE_AVE call after the advection (called directly
246        from thsice_do_advect.F).
247    o verification/global_ocean.90x40x15 and OpenAD:
248      New experiment for OpenAD is identical to the one in input_ad except that
249        multiDimAdvection=.FALSE.,
250      There is still an issue with this.
251    o pkg/thsice:
252      - account for ice velocity (ocean relative velocity) in turbulent heat flux
253        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
254        and offline_exf_seaice (main test).
255    
256    checkpoint64f (2013/03/31)
257    o verification/OpenAD:
258      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
259    o verification/isomip, pkg/shelfice and OpenAD:
260      - add OpenAD setup to this exp and make shelfice package work with OpenAD
261    o verification/tutorial_global_oce_biogeo:
262      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
263    o verification/offline_exf_seaice:
264      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
265    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
266      - add OpenAD setup to this exp and make ptracers package work with OpenAD
267    o pkg/seaice/seaice_evp.F:
268       mask the asymmetric contribution of the ice-ocean stress (when
269       the turningAngle is non-zero) over open water to avoid stripes
270       in the EVP-solutions after many EVP-substeps. This does not change
271       the verification experiment (because turningAngle=0 in that experiment),
272       but will affect other EVP solutions with turningAngle.ne.0
273    o verification, AD & TLM output:
274      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
275        additions and multiplications which affect results at machine truncation
276        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
277        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
278        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
279        digits of matching.
280    o pkg/seaice:
281       modify lsr-algorithm so that it vectorizes AND converges by using a
282       "zebra" method: split vector loop into two with step size 2; this
283       solves a general convergence problem for the JFNK solver on a vector
284       computer. It has the potential to even improve convergence for
285       non-vector machines, but it does change the results so it is turned
286       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
287       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
288    
289    checkpoint64e (2013/03/05)
290    o pkg/ecco and several verification experiments:
291       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
292       from ecco package, and revert to unified routine in model/src/
293       Adjust verification experiments accordingly, especially gloal_oce_llc90
294       Should conclude long-standing work by Gael to reconsile the_main_loop with
295       ECCO and will enable OpenAD's revolve loop in ECCO setup.
296    o pkg/generic_advdiff:
297      - implement compressible flow method for multi-dim advection (similar to
298        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
299        TAF generates many recomputations) to use it; no yet coded with implicit
300        vertical advection.
301      - change experiment advect_cs (new output) and advect_xy (same output)
302        to test compressible flow multi-dim advection.
303    o pkg/generic_advdiff:
304      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
305        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
306    o pkg/seaice:
307      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
308        bug affects two verification experiments (lab_sea and lab_sea.hb87),
309        recover old (wrong) results by setting noSlipFac = 2. in
310        seaice_calc_strainrates.F;
311      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
312      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
313        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
314      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
315    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
316      - new subroutines seaice_lsr_tridiagu/v
317      - introduce loop bounds i/jmin/max to be able to use a restricted
318        additive Schwarz method, but not used for now.
319      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
320      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
321    o OpenAD support
322       Reorganize S/R call for overall time-stepping loop to facilitate
323       OpenAD revolve loop replacement
324       (new S/R main_do_loop.F)
325    o model/src:
326      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
327      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
328        ADAMS_BASHFORTH2.
329    o pkg/cheapaml:
330      - add new parameter (default=F, same as before) to disable full domain
331        (including land) periodicity in X & Y dir.
332      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
333        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
334        into single S/R CHEAPAML_TIMESTEP.
335    
336    checkpoint64d (2013/02/17)
337    o pkg/monitor (angular momentum):
338      - do not add Eta contribution to the total AM if using rigid-lid;
339      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
340      - horizontal discretisation: compute Zonal wind contribution separately for
341        each component (instead of from cell centered averaged) and use the 4
342        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
343      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
344        FreeSurf) if using vectorInvariant momentum.
345    o model/src (horizontal grid):
346      - move initialisation of all horizontal grid arrays to null value
347        from specific horizontal grid S/R to main S/R INI_GRID;
348      - add 2 new arrays to project model C-grid velocity on to zonal direction
349        (similar to AngleCosC & -AngleSinC but at U and V point location) and
350        compute them in S/R CALC_GRID_ANGLES.
351    o pkg/seaice: replace a hard coded parameter by a runtime parameter
352        SEAICE_JFNK_tolIter
353    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
354        preconditioner for JFNK (run LSR into the overlaps as far as possible,
355        i.e OLx/y-2, but overwrite the solution in the overlaps)
356      - extend loop range in seaice_calc_viscosity
357      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
358      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
359      - slightly modify loops in tridiagonal solver lsr-preconditioner
360      - by default remove the extra exchange in seaice_preconditioner with a
361        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
362      - modify offline_exf_seaice so that old results without RAS are reproduced
363        for output.dyn_jfnk.txt
364      in seaice_fgmres.F (unrelated to RAS)
365      - add a cpp-flag option for a re-ordered mapping (potentially more
366        efficient), but because this changes the results, turn it off by
367        default
368      - replace the save statement by local common blocks
369    o utils/matlab:
370      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
371      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
372        instead of local script "load_cs.m".
373    o pkg/seaice:
374      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
375        to the scalarProductMetric and the unrolling. By chance this does not
376        change the verification experiment, because of the particular domain
377        decomposition
378    o pkg/diagnostics:
379      - change default missing_value from UNSET_RL to -999.
380    o pkg/layers: improve vectorization of layers_fluxcalc.F
381      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
382        time spent in this routine by more than a factor of 3 on an NEC-SX8
383      - step 2: replace search algorithm by a bisection algorithm found in
384        Press et al. Numerical Recipes in Fortran. This algorithm can be
385        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
386        For now, use this algorithm only for TARGET_NEC_SX defined.
387      - moved the search algorithm into a separate subroutine, that is kept
388        within the same file for automatic inlining.
389      - modified catching potential errors
390    o pkg/ecco:
391      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
392    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
393      - modifications for ALLOW_GENTIM2D_CONTROL
394      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
395      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
396      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
397      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
398    o model/src:
399      - account for moist thermodynamics in (dry) potential temperature equation;
400        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
401        and cpl_aim+ocn.
402      - also switch to standard compiler (gfortran, was using ifort previously)
403        for fizhi-cs experiments reference output.
404    o pkg/ctrl:
405      - 1st step toward generic time-varying control variable (2D) via CPP option
406        ALLOW_GENTIM2D_CONTROL
407      - note new namelist ctrl_nml_genarr in data.ctrl
408    o verification/global_ocean.cs32x15:
409      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
410        thsice calling sequence and update "output.icedyn.txt" output file.
411    o pkg/ptracers:
412      - from Ryan A.: code to allow to restart a tracer at regular time interval
413        specifying a reset frequency and a reset-phase (for each tracers).
414    o pkg/thsice:
415      - implement new sequence of calls for thsice+seaice:
416          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
417          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
418      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
419        in CPP_OPTIONS.h) to recover old sequence;
420      - update diagnostics for Intermediate State thsice diagnostics: now filled
421        just before advection (instead of just after advection in old sequence);
422      - update output of experiment offline_exf_seaice (standard test);
423      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
424        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
425    o pkg/aim_v23:
426      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
427      - use standard pkg/mdsio routines to read & write CO2 pickup file;
428      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
429      - Implement new sequence of calls for seaice advection (with thsice and
430        seaice diffusion): do ice advection after ice-Thermodynamic (previously
431        was done before); change aim_do_physics.F (split the bi,bj loops block);
432      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
433    o pkg/thsice:
434      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
435        where just seaice diffusion is used without seaice-dynamics.
436    
437    checkpoint64c (2013/01/18)
438    o pkg/seaice:
439      - add a parameter JFNKres_tFac that can replace JFNKres_t
440        (= JFNKres_tFac*JFNKresidual before JFNK solver)
441      - add a line search option to the JFNK solver
442      - move update of u/vIce and computation of initial residual into a separate
443        routine (same file); makes the code a little easier to read (?)
444      - the line search requires computation of the residual and for some reason
445        I cannot do the update of u/vIce at the beginning of the Newton loop
446        without changing the results, so we move computation of the new residual
447        also to the end of the Newton loop, even without the line search
448    o pkg/mdsio:
449      - write missing value (corresponding to undefined array value) to meta files;
450        skip this if missing value is one (UNSET_RL would be a better value for the
451        case of undefined missing value but it's current the default missing-value);
452        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
453    o pkg/exf & thsice:
454      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
455        diagnostics) even when SHORTWAVE_HEATING is #undef;
456    o verification/cfc_example:
457      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
458        illustrate how to use it).
459    o verification/offline_exf_seaice:
460      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
461        files to only one time-record.
462      in input.thermo: narrow the 2 bands of low initial ice-concentration near
463        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
464        snapshot output; same mcPheePiston value as in thsice with
465        surf-current=0.2m/s.
466      in input.thsice: similar set-up as in input.thermo (channel with same seaice
467        initial conditions).
468    o verification/cfc_example:
469      - update file "data" with more standard choice (default rotationPeriod,
470        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
471        set deltaTFreeSurf to deltaTtracer) and update the output.
472    o pkg/layers:
473      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
474      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
475    o verification/offline_exf_seaice:
476      - set all {field}period to zero for constant-in-time forcing (not tested
477        anywhere else).
478    o verification/offline_exf_seaice:
479      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
480      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
481    o model/src:
482      - implement Finite-Volume method for (hydrostatic) presure gradient
483        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
484    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
485      - In order to be compatible with the default EVP code, this requires changing
486        the EVP code around a little; and because any small change immediately
487        breaks the lab_sea.hb87 verification experiment, the reference output is
488        updated two times (each time the remaining aggrement was only 2 digits):
489        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
490        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
491        The adjoint test lab_sea.evp also needed to be updated.
492      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
493        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
494        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
495        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
496        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
497        kept obscure, because I need to test it a little more.
498    o pkg/cheapaml:
499      - fix few incorrect type (_RL/_RS) in subroutine calls.
500    o pkg/seaice:
501      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
502        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
503    o model/src:
504      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
505        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
506        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
507    o pkg/cheapaml:
508      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
509        update output of experiment cheapAML_box.
510      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
511        and set them only in one place (cheapaml_readparms.F).
512      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
513      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
514        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
515    o model/src/the_main_loop.F:
516      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
517    o pkg/seaice:
518      - remove legacy branch code.
519      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
520    o verification/*/code*/SEAICE_OPTIONS.h:
521      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
522        SEAICE_CAP_HEFF).
523    o pkg/cheapaml:
524      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
525        to load new forcing fields.
526      - add missing "_d 0" where it's needed; + some editing (improve indentation).
527      - remove switch to "-r8" compiler option (no longer needed) in verification
528        cheapAML_box, keep same output (small trucation error differences).
529    o verification/offline_exf_seaice:
530      - add thermodynamics only test.
531    o verification/cheapAML_box:
532      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
533        keep same output (same 14 digits for cg2d).
534      - switch on "-r8" compiler option (some numerical values are missing
535        the "_d 0") and update output (only 6 digits for cg2d were preserved).
536    
537    checkpoint64b (2012/12/24)
538    o pkg/cheapaml:
539      - remove un-used variables (Qnet,EmPmR) from pickup files.
540      - store tendency of advected variables into cheapaml pickup file
541        and fix the AB-2 restart.
542    o verification/offline_exf_seaice and lab_sea adjoint:
543      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
544      - switch to 4 time steps in offline, consistent with lab_sea.
545      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
546      - update results after change of experiment seaice.
547    o pkg/seaice:
548      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
549        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
550        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
551        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
552    o model/src:
553      - add run-time parameter to select CG2D solver minimum-residual solution
554        (in case of a poor convergence).
555    o pkg/seaice/seaice_lsr.F
556      - move calculation of matrix coefficients into new
557        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
558        file; the main purpose of this change is to be able to reuse the code
559        in S/R SEAICE_PRECONDITIONER
560      - modify the computation of the residual so that the mass of sea-ice
561        is not used twice; this simplifies the calculations, but since
562        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
563        not tested in testreport---this does not affect the testreport results.
564    o verification/seaice_obcs:
565      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
566        verification/lab_sea/input.salt_plume; changes results/output.txt*
567    o model/src:
568      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
569    o pkg/seaice:
570      - improve description of parameters in seaice_fgmres.F and start
571        cleaning up the code
572      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
573        second argument
574      - add a metric based on grid cell area to SEAICE_SCALPROD; update
575        results of offline_exf_seaice.dyn_jfnk
576      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
577    o pkg/aim_v23:
578      - fix an other bug in dissipation heating (grid-cell area was missing).
579    o model/src + pkg/seaice:
580      - add global (multi-tile) linear solver for pair of tri-diagonal system
581        along X and Y lines, respectively for U and V component.
582        Note: 1) MPI and cube-exchange not yet coded.
583            2) probably not accurate for poorly conditioned / large size problem.
584      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
585        default: not compiled and not used.
586    o pkg/seaice:
587      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
588        introduce bi/bj loops and use global_sum_tile_rl instead of
589        mpi_allreduce in seaice_fgmres.F
590      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
591      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
592      - add a verification experiment for JFNK in offline_exf_seaice
593    o verification:
594      - change (for now, only fwd test) offline_exf_seaice experiment:
595        use a re-entrant channel with idealized coastline (trapezoidal shape)
596        at southern boundary to explore seaice dynamics and thermodynamics
597        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
598        secondary test (input.thsice) use thermodynamics only with SST relaxation.
599      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
600    o pkg/exf:
601      - disable "sstExtrapol" when Nr=1
602    o verification:
603      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
604        to test pkg/cheapaml.
605    o pkg/aim_v23 & pkg/shap_filt:
606      - fix dissipation heating (erroneous gravity multiplication factor).
607    o pkg/seaice:
608      - remove unused field pressPre from jfnk solver
609      - rename two subroutines in seaice_preconditioner.F
610    o eesupp/src:
611       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
612    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
613       - remove wrong parts of the rhs and the lhs (were in there
614         because I did not understand the concept of this preconditioner)
615       - add an exchange between u- and v-sweep. This increases communication
616         by a factor of two but improves the convergence of jfnk. Ideally,
617         one would like the u- and v-sweep to be independent. So far within
618         undocumented ifdefs
619       - reorganize the extra computations for printing the residuals
620    o tools/genmake2:
621      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
622        since it's not necessary (and was preventing to use MNC in some cases).
623    
624    checkpoint64a (2012/11/16)
625    o pkg/autodiff:
626      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
627        autodiff_readparms.F no longer depends on calling order (within
628        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
629        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
630        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
631    o pkg/obcs:
632      - adding tidal velocity forcing capability to obcs
633        for usage example, see verification/seaice_obcs/input.tides
634    o pkg/seaice:
635      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
636        SEAICE_LSRrelaxU/V
637      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
638    o pkg/aim_v23:
639      - implement heating from friction (bottom friction and stratospheric drag).
640    o pkg/shap_filt:
641      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
642        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
643    o model/src:
644      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
645        time-constant addMass field from file (addMassFile);
646      - support for heating due to friction (and Kinetic Energy dissipation):
647        add option, run-time switch and 3-D field array + support code ; each pkg
648        or S/R can add heating contribution (if there is a sink of KE); the sum is
649        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
650    o pkg/seaice:
651      - complete merge of ITD code into seaice_growth.F
652        from MITgcm_contrib/torge/itd/code/
653        no verification so far, but Torge Martin tested
654        "1-D test case and Beaufort set up;
655        deliver okay results after 1 model year."
656      - complete merge of SEAICE_SIZE.h into all relevant routines
657      - move computation of eta at Z-points into calc_viscosities
658        + introduce global field etaZ
659        + add different methods for computing etaZ, for now the old
660          method (simple averages of eta to Z-points) is hardwired
661        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
662          seaice_preconditioner
663      - simplify computations for SEAICE_ZETA_SMOOTHREG
664      - seaice_preconditioner:
665        + replace one remaining press by pressLoc (mistake)
666        + adjust printing of residuals
667      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
668        + add (SEAICE.h) and rename some counters (initiliased in
669          seaice_init_fixed.F)
670        + add _BEGIN/END_MASTER (myThid)  around print statements
671        + print total number of iterations and failures over SEAICE_monFreq
672          interval to STDOUT
673      - move control over output-messages by fgmres to seaice_jfnk to save
674        some operations
675      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
676        in order to make restarts with sol .ne. zero (fgmres with restarts)
677        (seaice_jfnk.F, seaice_fgmres.F)
678      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
679        a serious convergence problem when open boundaries are involved
680    o pkg/ggl90: fix computation of control volumes for the case of
681    ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes    ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
682    up half a grid cell from C-centered to W-centered (pointed out by C. Eden)    up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
683  o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC  o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
684  o pkg/autodiff  o pkg/autodiff
685    - Add inAdMode switch for SEAICEuseDYNAMICS:    - Add inAdMode switch for SEAICEuseDYNAMICS:
686      SEAICEuseDYNAMICSinAdMode      SEAICEuseDYNAMICSinAdMode
687      (extend logic in ADAUTODIFF_INADMODE_SET)      (extend logic in ADAUTODIFF_INADMODE_SET)
688  o pkg/seaice  o pkg/seaice
689    - Step 1 of merging ice-thickness distribution (ITD) code from    - Step 1 of merging ice-thickness distribution (ITD) code from

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