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revision 1.1753 by jmc, Fri Oct 19 18:52:53 2012 UTC revision 1.1871 by jmc, Sun May 26 17:35:04 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint64h (2013/05/26)
8    o pkg/cheapaml:
9      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
10        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
11      - consistent treatment of uWind,vWind location: assume everywhere in
12        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
13        (Note: was already the case for Tair,Qair advection);
14        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
15      - compute diabatic forcing only in the interior (excluding overlap regions)
16      - fill in array "Qsw" (for short-wave heating);
17      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
18        before any update (consistent with MITgcm state var diagnostics);
19      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
20        non periodic ; + adjusted for uWind,vWind (C-grid).
21    o pkg/seaice:
22      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
23        add explicitly pkg/exf in experiments that currently use pkg/seaice.
24      - allows to compile pkg/seaice without pkg/exf.
25    o tools/OAD_support:
26      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
27        of array "ourStepOf" in function rvNextAction (revolve.F90).
28    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
29      - change pkg name (to be used with other atmospheric physics pkg)
30        but by-pass CVS when making the new pkg so that we keep the CVS history.
31    o pkg/offline:
32      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
33        (previously called from pkg/dic_surfforcing_init.F)
34    o model/src:
35      - re-order sequence of calls within packages_init_variables.F, using
36        standard order, except for:
37         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
38         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
39    o new pkg: atm_phys
40      - add entry point and source code (previously in contrib
41          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
42        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
43      - re-order sequence of calls within packages_readparms.F,
44         packages_init_fixed.F and packages_write_pickup.F
45        (but skip packages_init_variables.F because of TAF issues).
46      - update contrib/*/atm_gray/ experiment.
47    o pkg/seaice (ITD code):
48      - simplify and fix the writing of pickup-files for ITD case
49    o pkg/seaice (ITD code):
50      - introduce floe size dependent lateral melt for ITD case;
51      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
52      - update seaice_itd experiment main output.
53    o pkg/thsice:
54      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
55        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
56        changed accordingly pkg/atm2d.
57    
58    checkpoint64g (2013/05/01)
59    o pkg/exf ALLOW_RUNOFTEMP
60      - if defined,  river and glacier runoff temperature can be read-in from
61        runoftempfile; runoftempfile needs to have same format as runofffile
62    o pkg/thsice (& pkg/bulk_force):
63      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
64        for energy content of Precip + RunOff & Evap (like with pkg/exf).
65      - change computation domain to always be the interior (without overlap).
66      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
67    o verification/tutorial_global_oce_biogeo:
68      - add preliminary OpenAD setup (still has problems)
69    o pkg/seaice:
70      - turn some parameters for choosing the convergence criterion of
71        the inexact Newton method (JFNK) into runtime parameters for convenience
72      - clean up seaice_calc_viscosities.F: remove/retire two options for
73        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
74        the results of lab_sea/input because a division has been replaced by
75        a multiplication with the reciprocal (sumNorm)
76      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
77        convergence of solver (changes results, of course), and to test some
78        new features
79    o model/src:
80      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
81      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
82      - move forcing adjustment (balancing surface forcing) in specific S/R
83        where might also be applied exchanges (if needed) to forcing arrays.
84    o pkg/shelfice:
85      - allow to specify the Ice-Shelf mass per unit area (instead of
86        shelficeLoadAnomaly) and do the conversion from one to the other
87      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
88        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
89        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
90        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
91      - update isomip experiment forward output (get machine truncation error
92        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
93    o verification/offline_exf_seaice:
94      revise data.seaice in input.thermo and input_ad and update results accordingly
95        HO = 0.2, SEAICE_areaLossFormula = 2,
96        SEAICE_growMeltByConv = .TRUE.,
97        SEAICE_doOpenWaterMelt = .TRUE.,
98      Improve consistency with input.thsice and fix the spurious 500m ice corners
99    o verification/global_ocean.cs32x15:
100      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
101        in icedyn (thsice+seaice-dyn) test and update output.
102    o verification/offline_exf_seaice:
103      - adjust list of tested variables (with testreport) and update
104        standard test output with better slection of monitored fields.
105    o pkg/cd_code:
106      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
107        experiment lab_sea.hb87
108    o tools/genmake2:
109      - change default makedepend from the system default to tools/xmakedepend:
110        When no makedepend is specified, select tools/xmakedepend it the test pass,
111        otherwise select the system default (if exist and pass the test) or
112        try to build cyrus-makedepend ; stop if none of the 3 works.
113    o pkg/exf & pkg/thsice:
114      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
115        for energy content of Precip + RunOff & Evap. Assumes:
116       1) Rain has same temp as Air.
117       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
118       3) Run-Off comes at the temp of surface water (with same Cp)
119       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
120        put directly into Latent Heat flux & should use water-vapor heat capacity.
121       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
122        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
123    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
124        (compile when SEAICE_ALLOW_JFNK is defined)
125    o pkg/thsice:
126      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
127        implementation): move THSICE_AVE call after the advection (called directly
128        from thsice_do_advect.F).
129    o verification/global_ocean.90x40x15 and OpenAD:
130      New experiment for OpenAD is identical to the one in input_ad except that
131        multiDimAdvection=.FALSE.,
132      There is still an issue with this.
133    o pkg/thsice:
134      - account for ice velocity (ocean relative velocity) in turbulent heat flux
135        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
136        and offline_exf_seaice (main test).
137    
138    checkpoint64f (2013/03/31)
139    o verification/OpenAD:
140      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
141    o verification/isomip, pkg/shelfice and OpenAD:
142      - add OpenAD setup to this exp and make shelfice package work with OpenAD
143    o verification/tutorial_global_oce_biogeo:
144      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
145    o verification/offline_exf_seaice:
146      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
147    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
148      - add OpenAD setup to this exp and make ptracers package work with OpenAD
149    o pkg/seaice/seaice_evp.F:
150       mask the asymmetric contribution of the ice-ocean stress (when
151       the turningAngle is non-zero) over open water to avoid stripes
152       in the EVP-solutions after many EVP-substeps. This does not change
153       the verification experiment (because turningAngle=0 in that experiment),
154       but will affect other EVP solutions with turningAngle.ne.0
155    o verification, AD & TLM output:
156      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
157        additions and multiplications which affect results at machine truncation
158        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
159        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
160        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
161        digits of matching.
162    o pkg/seaice:
163       modify lsr-algorithm so that it vectorizes AND converges by using a
164       "zebra" method: split vector loop into two with step size 2; this
165       solves a general convergence problem for the JFNK solver on a vector
166       computer. It has the potential to even improve convergence for
167       non-vector machines, but it does change the results so it is turned
168       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
169       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
170    
171    checkpoint64e (2013/03/05)
172    o pkg/ecco and several verification experiments:
173       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
174       from ecco package, and revert to unified routine in model/src/
175       Adjust verification experiments accordingly, especially gloal_oce_llc90
176       Should conclude long-standing work by Gael to reconsile the_main_loop with
177       ECCO and will enable OpenAD's revolve loop in ECCO setup.
178    o pkg/generic_advdiff:
179      - implement compressible flow method for multi-dim advection (similar to
180        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
181        TAF generates many recomputations) to use it; no yet coded with implicit
182        vertical advection.
183      - change experiment advect_cs (new output) and advect_xy (same output)
184        to test compressible flow multi-dim advection.
185    o pkg/generic_advdiff:
186      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
187        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
188    o pkg/seaice:
189      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
190        bug affects two verification experiments (lab_sea and lab_sea.hb87),
191        recover old (wrong) results by setting noSlipFac = 2. in
192        seaice_calc_strainrates.F;
193      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
194      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
195        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
196      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
197    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
198      - new subroutines seaice_lsr_tridiagu/v
199      - introduce loop bounds i/jmin/max to be able to use a restricted
200        additive Schwarz method, but not used for now.
201      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
202      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
203    o OpenAD support
204       Reorganize S/R call for overall time-stepping loop to facilitate
205       OpenAD revolve loop replacement
206       (new S/R main_do_loop.F)
207    o model/src:
208      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
209      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
210        ADAMS_BASHFORTH2.
211    o pkg/cheapaml:
212      - add new parameter (default=F, same as before) to disable full domain
213        (including land) periodicity in X & Y dir.
214      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
215        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
216        into single S/R CHEAPAML_TIMESTEP.
217    
218    checkpoint64d (2013/02/17)
219    o pkg/monitor (angular momentum):
220      - do not add Eta contribution to the total AM if using rigid-lid;
221      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
222      - horizontal discretisation: compute Zonal wind contribution separately for
223        each component (instead of from cell centered averaged) and use the 4
224        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
225      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
226        FreeSurf) if using vectorInvariant momentum.
227    o model/src (horizontal grid):
228      - move initialisation of all horizontal grid arrays to null value
229        from specific horizontal grid S/R to main S/R INI_GRID;
230      - add 2 new arrays to project model C-grid velocity on to zonal direction
231        (similar to AngleCosC & -AngleSinC but at U and V point location) and
232        compute them in S/R CALC_GRID_ANGLES.
233    o pkg/seaice: replace a hard coded parameter by a runtime parameter
234        SEAICE_JFNK_tolIter
235    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
236        preconditioner for JFNK (run LSR into the overlaps as far as possible,
237        i.e OLx/y-2, but overwrite the solution in the overlaps)
238      - extend loop range in seaice_calc_viscosity
239      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
240      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
241      - slightly modify loops in tridiagonal solver lsr-preconditioner
242      - by default remove the extra exchange in seaice_preconditioner with a
243        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
244      - modify offline_exf_seaice so that old results without RAS are reproduced
245        for output.dyn_jfnk.txt
246      in seaice_fgmres.F (unrelated to RAS)
247      - add a cpp-flag option for a re-ordered mapping (potentially more
248        efficient), but because this changes the results, turn it off by
249        default
250      - replace the save statement by local common blocks
251    o utils/matlab:
252      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
253      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
254        instead of local script "load_cs.m".
255    o pkg/seaice:
256      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
257        to the scalarProductMetric and the unrolling. By chance this does not
258        change the verification experiment, because of the particular domain
259        decomposition
260    o pkg/diagnostics:
261      - change default missing_value from UNSET_RL to -999.
262    o pkg/layers: improve vectorization of layers_fluxcalc.F
263      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
264        time spent in this routine by more than a factor of 3 on an NEC-SX8
265      - step 2: replace search algorithm by a bisection algorithm found in
266        Press et al. Numerical Recipes in Fortran. This algorithm can be
267        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
268        For now, use this algorithm only for TARGET_NEC_SX defined.
269      - moved the search algorithm into a separate subroutine, that is kept
270        within the same file for automatic inlining.
271      - modified catching potential errors
272    o pkg/ecco:
273      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
274    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
275      - modifications for ALLOW_GENTIM2D_CONTROL
276      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
277      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
278      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
279      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
280    o model/src:
281      - account for moist thermodynamics in (dry) potential temperature equation;
282        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
283        and cpl_aim+ocn.
284      - also switch to standard compiler (gfortran, was using ifort previously)
285        for fizhi-cs experiments reference output.
286    o pkg/ctrl:
287      - 1st step toward generic time-varying control variable (2D) via CPP option
288        ALLOW_GENTIM2D_CONTROL
289      - note new namelist ctrl_nml_genarr in data.ctrl
290    o verification/global_ocean.cs32x15:
291      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
292        thsice calling sequence and update "output.icedyn.txt" output file.
293    o pkg/ptracers:
294      - from Ryan A.: code to allow to restart a tracer at regular time interval
295        specifying a reset frequency and a reset-phase (for each tracers).
296    o pkg/thsice:
297      - implement new sequence of calls for thsice+seaice:
298          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
299          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
300      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
301        in CPP_OPTIONS.h) to recover old sequence;
302      - update diagnostics for Intermediate State thsice diagnostics: now filled
303        just before advection (instead of just after advection in old sequence);
304      - update output of experiment offline_exf_seaice (standard test);
305      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
306        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
307    o pkg/aim_v23:
308      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
309      - use standard pkg/mdsio routines to read & write CO2 pickup file;
310      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
311      - Implement new sequence of calls for seaice advection (with thsice and
312        seaice diffusion): do ice advection after ice-Thermodynamic (previously
313        was done before); change aim_do_physics.F (split the bi,bj loops block);
314      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
315    o pkg/thsice:
316      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
317        where just seaice diffusion is used without seaice-dynamics.
318    
319    checkpoint64c (2013/01/18)
320    o pkg/seaice:
321      - add a parameter JFNKres_tFac that can replace JFNKres_t
322        (= JFNKres_tFac*JFNKresidual before JFNK solver)
323      - add a line search option to the JFNK solver
324      - move update of u/vIce and computation of initial residual into a separate
325        routine (same file); makes the code a little easier to read (?)
326      - the line search requires computation of the residual and for some reason
327        I cannot do the update of u/vIce at the beginning of the Newton loop
328        without changing the results, so we move computation of the new residual
329        also to the end of the Newton loop, even without the line search
330    o pkg/mdsio:
331      - write missing value (corresponding to undefined array value) to meta files;
332        skip this if missing value is one (UNSET_RL would be a better value for the
333        case of undefined missing value but it's current the default missing-value);
334        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
335    o pkg/exf & thsice:
336      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
337        diagnostics) even when SHORTWAVE_HEATING is #undef;
338    o verification/cfc_example:
339      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
340        illustrate how to use it).
341    o verification/offline_exf_seaice:
342      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
343        files to only one time-record.
344      in input.thermo: narrow the 2 bands of low initial ice-concentration near
345        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
346        snapshot output; same mcPheePiston value as in thsice with
347        surf-current=0.2m/s.
348      in input.thsice: similar set-up as in input.thermo (channel with same seaice
349        initial conditions).
350    o verification/cfc_example:
351      - update file "data" with more standard choice (default rotationPeriod,
352        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
353        set deltaTFreeSurf to deltaTtracer) and update the output.
354    o pkg/layers:
355      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
356      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
357    o verification/offline_exf_seaice:
358      - set all {field}period to zero for constant-in-time forcing (not tested
359        anywhere else).
360    o verification/offline_exf_seaice:
361      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
362      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
363    o model/src:
364      - implement Finite-Volume method for (hydrostatic) presure gradient
365        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
366    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
367      - In order to be compatible with the default EVP code, this requires changing
368        the EVP code around a little; and because any small change immediately
369        breaks the lab_sea.hb87 verification experiment, the reference output is
370        updated two times (each time the remaining aggrement was only 2 digits):
371        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
372        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
373        The adjoint test lab_sea.evp also needed to be updated.
374      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
375        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
376        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
377        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
378        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
379        kept obscure, because I need to test it a little more.
380    o pkg/cheapaml:
381      - fix few incorrect type (_RL/_RS) in subroutine calls.
382    o pkg/seaice:
383      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
384        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
385    o model/src:
386      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
387        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
388        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
389    o pkg/cheapaml:
390      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
391        update output of experiment cheapAML_box.
392      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
393        and set them only in one place (cheapaml_readparms.F).
394      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
395      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
396        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
397    o model/src/the_main_loop.F:
398      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
399    o pkg/seaice:
400      - remove legacy branch code.
401      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
402    o verification/*/code*/SEAICE_OPTIONS.h:
403      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
404        SEAICE_CAP_HEFF).
405    o pkg/cheapaml:
406      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
407        to load new forcing fields.
408      - add missing "_d 0" where it's needed; + some editing (improve indentation).
409      - remove switch to "-r8" compiler option (no longer needed) in verification
410        cheapAML_box, keep same output (small trucation error differences).
411    o verification/offline_exf_seaice:
412      - add thermodynamics only test.
413    o verification/cheapAML_box:
414      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
415        keep same output (same 14 digits for cg2d).
416      - switch on "-r8" compiler option (some numerical values are missing
417        the "_d 0") and update output (only 6 digits for cg2d were preserved).
418    
419    checkpoint64b (2012/12/24)
420    o pkg/cheapaml:
421      - remove un-used variables (Qnet,EmPmR) from pickup files.
422      - store tendency of advected variables into cheapaml pickup file
423        and fix the AB-2 restart.
424    o verification/offline_exf_seaice and lab_sea adjoint:
425      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
426      - switch to 4 time steps in offline, consistent with lab_sea.
427      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
428      - update results after change of experiment seaice.
429    o pkg/seaice:
430      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
431        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
432        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
433        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
434    o model/src:
435      - add run-time parameter to select CG2D solver minimum-residual solution
436        (in case of a poor convergence).
437    o pkg/seaice/seaice_lsr.F
438      - move calculation of matrix coefficients into new
439        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
440        file; the main purpose of this change is to be able to reuse the code
441        in S/R SEAICE_PRECONDITIONER
442      - modify the computation of the residual so that the mass of sea-ice
443        is not used twice; this simplifies the calculations, but since
444        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
445        not tested in testreport---this does not affect the testreport results.
446    o verification/seaice_obcs:
447      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
448        verification/lab_sea/input.salt_plume; changes results/output.txt*
449    o model/src:
450      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
451    o pkg/seaice:
452      - improve description of parameters in seaice_fgmres.F and start
453        cleaning up the code
454      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
455        second argument
456      - add a metric based on grid cell area to SEAICE_SCALPROD; update
457        results of offline_exf_seaice.dyn_jfnk
458      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
459    o pkg/aim_v23:
460      - fix an other bug in dissipation heating (grid-cell area was missing).
461    o model/src + pkg/seaice:
462      - add global (multi-tile) linear solver for pair of tri-diagonal system
463        along X and Y lines, respectively for U and V component.
464        Note: 1) MPI and cube-exchange not yet coded.
465            2) probably not accurate for poorly conditioned / large size problem.
466      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
467        default: not compiled and not used.
468    o pkg/seaice:
469      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
470        introduce bi/bj loops and use global_sum_tile_rl instead of
471        mpi_allreduce in seaice_fgmres.F
472      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
473      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
474      - add a verification experiment for JFNK in offline_exf_seaice
475    o verification:
476      - change (for now, only fwd test) offline_exf_seaice experiment:
477        use a re-entrant channel with idealized coastline (trapezoidal shape)
478        at southern boundary to explore seaice dynamics and thermodynamics
479        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
480        secondary test (input.thsice) use thermodynamics only with SST relaxation.
481      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
482    o pkg/exf:
483      - disable "sstExtrapol" when Nr=1
484    o verification:
485      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
486        to test pkg/cheapaml.
487    o pkg/aim_v23 & pkg/shap_filt:
488      - fix dissipation heating (erroneous gravity multiplication factor).
489    o pkg/seaice:
490      - remove unused field pressPre from jfnk solver
491      - rename two subroutines in seaice_preconditioner.F
492    o eesupp/src:
493       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
494    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
495       - remove wrong parts of the rhs and the lhs (were in there
496         because I did not understand the concept of this preconditioner)
497       - add an exchange between u- and v-sweep. This increases communication
498         by a factor of two but improves the convergence of jfnk. Ideally,
499         one would like the u- and v-sweep to be independent. So far within
500         undocumented ifdefs
501       - reorganize the extra computations for printing the residuals
502    o tools/genmake2:
503      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
504        since it's not necessary (and was preventing to use MNC in some cases).
505    
506    checkpoint64a (2012/11/16)
507    o pkg/autodiff:
508      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
509        autodiff_readparms.F no longer depends on calling order (within
510        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
511        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
512        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
513    o pkg/obcs:
514      - adding tidal velocity forcing capability to obcs
515        for usage example, see verification/seaice_obcs/input.tides
516    o pkg/seaice:
517      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
518        SEAICE_LSRrelaxU/V
519      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
520    o pkg/aim_v23:
521      - implement heating from friction (bottom friction and stratospheric drag).
522    o pkg/shap_filt:
523      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
524        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
525    o model/src:
526      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
527        time-constant addMass field from file (addMassFile);
528      - support for heating due to friction (and Kinetic Energy dissipation):
529        add option, run-time switch and 3-D field array + support code ; each pkg
530        or S/R can add heating contribution (if there is a sink of KE); the sum is
531        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
532    o pkg/seaice:
533      - complete merge of ITD code into seaice_growth.F
534        from MITgcm_contrib/torge/itd/code/
535        no verification so far, but Torge Martin tested
536        "1-D test case and Beaufort set up;
537        deliver okay results after 1 model year."
538      - complete merge of SEAICE_SIZE.h into all relevant routines
539      - move computation of eta at Z-points into calc_viscosities
540        + introduce global field etaZ
541        + add different methods for computing etaZ, for now the old
542          method (simple averages of eta to Z-points) is hardwired
543        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
544          seaice_preconditioner
545      - simplify computations for SEAICE_ZETA_SMOOTHREG
546      - seaice_preconditioner:
547        + replace one remaining press by pressLoc (mistake)
548        + adjust printing of residuals
549      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
550        + add (SEAICE.h) and rename some counters (initiliased in
551          seaice_init_fixed.F)
552        + add _BEGIN/END_MASTER (myThid)  around print statements
553        + print total number of iterations and failures over SEAICE_monFreq
554          interval to STDOUT
555      - move control over output-messages by fgmres to seaice_jfnk to save
556        some operations
557      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
558        in order to make restarts with sol .ne. zero (fgmres with restarts)
559        (seaice_jfnk.F, seaice_fgmres.F)
560      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
561        a serious convergence problem when open boundaries are involved
562    o pkg/ggl90: fix computation of control volumes for the case of
563      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
564      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
565    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
566    o pkg/autodiff
567      - Add inAdMode switch for SEAICEuseDYNAMICS:
568        SEAICEuseDYNAMICSinAdMode
569        (extend logic in ADAUTODIFF_INADMODE_SET)
570    o pkg/seaice
571      - Step 1 of merging ice-thickness distribution (ITD) code from
572        MITgcm_contrib/torge/itd/ (author: Torge Martin)
573        The code implements concept laid out in Thorndike et al. (1975);
574        code is enabled via CPP flag SEAICE_ITD
575        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
576        code is not complete yet!!
577      - SEAICE_SIZE.h now included in almost all seaice routines
578    o verification (using seaice):
579      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
580        global_ocean.cs32x15.seaice ; update results.
581      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
582      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
583        offline_exf_seaice (previously compiling B-grid).
584    o pkg/exf:
585      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
586        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
587        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
588  o pkg/layers (adjust changes from Sept 19):  o pkg/layers (adjust changes from Sept 19):
589    - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)    - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
590      this allows to remove "layers_maxNum" dimension from all layers arrays.      this allows to remove "layers_maxNum" dimension from all layers arrays.

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