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revision 1.1766 by jmc, Sat Nov 10 00:16:11 2012 UTC revision 1.1875 by jmc, Mon Jun 10 03:08:50 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/cfc:
8      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
9      - remove atmos CFC 2-D arrays from common bloc (now local variables)
10      - change some hard-coded constant to run time parameter for reading and
11        and interpolating atmospheric CFC ; keep same default as previously.
12      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
13      - put arguments in standard order: myTime, myIter, myThid
14      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
15        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
16      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
17      - new routine to print summary of CFC params and check for consistency.
18    o pkg/cfc:
19      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
20        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
21      - fix interpolation of atmphspheric CFC between Sorthern and Northern
22        hemisphere value.
23    o pkg/seaice:
24      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
25    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
26                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
27      - requires an additional time level that is stored in the pickup
28      - you can start with AB2 from a pickup without this time level with
29        pickupStrictlyMatch = .false.
30    
31    checkpoint64h (2013/05/26)
32    o pkg/cheapaml:
33      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
34        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
35      - consistent treatment of uWind,vWind location: assume everywhere in
36        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
37        (Note: was already the case for Tair,Qair advection);
38        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
39      - compute diabatic forcing only in the interior (excluding overlap regions)
40      - fill in array "Qsw" (for short-wave heating);
41      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
42        before any update (consistent with MITgcm state var diagnostics);
43      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
44        non periodic ; + adjusted for uWind,vWind (C-grid).
45    o pkg/seaice:
46      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
47        add explicitly pkg/exf in experiments that currently use pkg/seaice.
48      - allows to compile pkg/seaice without pkg/exf.
49    o tools/OAD_support:
50      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
51        of array "ourStepOf" in function rvNextAction (revolve.F90).
52    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
53      - change pkg name (to be used with other atmospheric physics pkg)
54        but by-pass CVS when making the new pkg so that we keep the CVS history.
55    o pkg/offline:
56      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
57        (previously called from pkg/dic_surfforcing_init.F)
58    o model/src:
59      - re-order sequence of calls within packages_init_variables.F, using
60        standard order, except for:
61         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
62         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
63    o new pkg: atm_phys
64      - add entry point and source code (previously in contrib
65          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
66        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
67      - re-order sequence of calls within packages_readparms.F,
68         packages_init_fixed.F and packages_write_pickup.F
69        (but skip packages_init_variables.F because of TAF issues).
70      - update contrib/*/atm_gray/ experiment.
71    o pkg/seaice (ITD code):
72      - simplify and fix the writing of pickup-files for ITD case
73    o pkg/seaice (ITD code):
74      - introduce floe size dependent lateral melt for ITD case;
75      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
76      - update seaice_itd experiment main output.
77    o pkg/thsice:
78      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
79        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
80        changed accordingly pkg/atm2d.
81    
82    checkpoint64g (2013/05/01)
83    o pkg/exf ALLOW_RUNOFTEMP
84      - if defined,  river and glacier runoff temperature can be read-in from
85        runoftempfile; runoftempfile needs to have same format as runofffile
86    o pkg/thsice (& pkg/bulk_force):
87      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
88        for energy content of Precip + RunOff & Evap (like with pkg/exf).
89      - change computation domain to always be the interior (without overlap).
90      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
91    o verification/tutorial_global_oce_biogeo:
92      - add preliminary OpenAD setup (still has problems)
93    o pkg/seaice:
94      - turn some parameters for choosing the convergence criterion of
95        the inexact Newton method (JFNK) into runtime parameters for convenience
96      - clean up seaice_calc_viscosities.F: remove/retire two options for
97        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
98        the results of lab_sea/input because a division has been replaced by
99        a multiplication with the reciprocal (sumNorm)
100      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
101        convergence of solver (changes results, of course), and to test some
102        new features
103    o model/src:
104      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
105      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
106      - move forcing adjustment (balancing surface forcing) in specific S/R
107        where might also be applied exchanges (if needed) to forcing arrays.
108    o pkg/shelfice:
109      - allow to specify the Ice-Shelf mass per unit area (instead of
110        shelficeLoadAnomaly) and do the conversion from one to the other
111      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
112        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
113        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
114        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
115      - update isomip experiment forward output (get machine truncation error
116        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
117    o verification/offline_exf_seaice:
118      revise data.seaice in input.thermo and input_ad and update results accordingly
119        HO = 0.2, SEAICE_areaLossFormula = 2,
120        SEAICE_growMeltByConv = .TRUE.,
121        SEAICE_doOpenWaterMelt = .TRUE.,
122      Improve consistency with input.thsice and fix the spurious 500m ice corners
123    o verification/global_ocean.cs32x15:
124      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
125        in icedyn (thsice+seaice-dyn) test and update output.
126    o verification/offline_exf_seaice:
127      - adjust list of tested variables (with testreport) and update
128        standard test output with better slection of monitored fields.
129    o pkg/cd_code:
130      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
131        experiment lab_sea.hb87
132    o tools/genmake2:
133      - change default makedepend from the system default to tools/xmakedepend:
134        When no makedepend is specified, select tools/xmakedepend it the test pass,
135        otherwise select the system default (if exist and pass the test) or
136        try to build cyrus-makedepend ; stop if none of the 3 works.
137    o pkg/exf & pkg/thsice:
138      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
139        for energy content of Precip + RunOff & Evap. Assumes:
140       1) Rain has same temp as Air.
141       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
142       3) Run-Off comes at the temp of surface water (with same Cp)
143       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
144        put directly into Latent Heat flux & should use water-vapor heat capacity.
145       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
146        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
147    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
148        (compile when SEAICE_ALLOW_JFNK is defined)
149    o pkg/thsice:
150      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
151        implementation): move THSICE_AVE call after the advection (called directly
152        from thsice_do_advect.F).
153    o verification/global_ocean.90x40x15 and OpenAD:
154      New experiment for OpenAD is identical to the one in input_ad except that
155        multiDimAdvection=.FALSE.,
156      There is still an issue with this.
157    o pkg/thsice:
158      - account for ice velocity (ocean relative velocity) in turbulent heat flux
159        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
160        and offline_exf_seaice (main test).
161    
162    checkpoint64f (2013/03/31)
163    o verification/OpenAD:
164      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
165    o verification/isomip, pkg/shelfice and OpenAD:
166      - add OpenAD setup to this exp and make shelfice package work with OpenAD
167    o verification/tutorial_global_oce_biogeo:
168      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
169    o verification/offline_exf_seaice:
170      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
171    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
172      - add OpenAD setup to this exp and make ptracers package work with OpenAD
173    o pkg/seaice/seaice_evp.F:
174       mask the asymmetric contribution of the ice-ocean stress (when
175       the turningAngle is non-zero) over open water to avoid stripes
176       in the EVP-solutions after many EVP-substeps. This does not change
177       the verification experiment (because turningAngle=0 in that experiment),
178       but will affect other EVP solutions with turningAngle.ne.0
179    o verification, AD & TLM output:
180      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
181        additions and multiplications which affect results at machine truncation
182        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
183        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
184        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
185        digits of matching.
186    o pkg/seaice:
187       modify lsr-algorithm so that it vectorizes AND converges by using a
188       "zebra" method: split vector loop into two with step size 2; this
189       solves a general convergence problem for the JFNK solver on a vector
190       computer. It has the potential to even improve convergence for
191       non-vector machines, but it does change the results so it is turned
192       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
193       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
194    
195    checkpoint64e (2013/03/05)
196    o pkg/ecco and several verification experiments:
197       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
198       from ecco package, and revert to unified routine in model/src/
199       Adjust verification experiments accordingly, especially gloal_oce_llc90
200       Should conclude long-standing work by Gael to reconsile the_main_loop with
201       ECCO and will enable OpenAD's revolve loop in ECCO setup.
202    o pkg/generic_advdiff:
203      - implement compressible flow method for multi-dim advection (similar to
204        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
205        TAF generates many recomputations) to use it; no yet coded with implicit
206        vertical advection.
207      - change experiment advect_cs (new output) and advect_xy (same output)
208        to test compressible flow multi-dim advection.
209    o pkg/generic_advdiff:
210      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
211        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
212    o pkg/seaice:
213      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
214        bug affects two verification experiments (lab_sea and lab_sea.hb87),
215        recover old (wrong) results by setting noSlipFac = 2. in
216        seaice_calc_strainrates.F;
217      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
218      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
219        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
220      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
221    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
222      - new subroutines seaice_lsr_tridiagu/v
223      - introduce loop bounds i/jmin/max to be able to use a restricted
224        additive Schwarz method, but not used for now.
225      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
226      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
227    o OpenAD support
228       Reorganize S/R call for overall time-stepping loop to facilitate
229       OpenAD revolve loop replacement
230       (new S/R main_do_loop.F)
231    o model/src:
232      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
233      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
234        ADAMS_BASHFORTH2.
235    o pkg/cheapaml:
236      - add new parameter (default=F, same as before) to disable full domain
237        (including land) periodicity in X & Y dir.
238      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
239        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
240        into single S/R CHEAPAML_TIMESTEP.
241    
242    checkpoint64d (2013/02/17)
243    o pkg/monitor (angular momentum):
244      - do not add Eta contribution to the total AM if using rigid-lid;
245      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
246      - horizontal discretisation: compute Zonal wind contribution separately for
247        each component (instead of from cell centered averaged) and use the 4
248        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
249      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
250        FreeSurf) if using vectorInvariant momentum.
251    o model/src (horizontal grid):
252      - move initialisation of all horizontal grid arrays to null value
253        from specific horizontal grid S/R to main S/R INI_GRID;
254      - add 2 new arrays to project model C-grid velocity on to zonal direction
255        (similar to AngleCosC & -AngleSinC but at U and V point location) and
256        compute them in S/R CALC_GRID_ANGLES.
257    o pkg/seaice: replace a hard coded parameter by a runtime parameter
258        SEAICE_JFNK_tolIter
259    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
260        preconditioner for JFNK (run LSR into the overlaps as far as possible,
261        i.e OLx/y-2, but overwrite the solution in the overlaps)
262      - extend loop range in seaice_calc_viscosity
263      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
264      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
265      - slightly modify loops in tridiagonal solver lsr-preconditioner
266      - by default remove the extra exchange in seaice_preconditioner with a
267        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
268      - modify offline_exf_seaice so that old results without RAS are reproduced
269        for output.dyn_jfnk.txt
270      in seaice_fgmres.F (unrelated to RAS)
271      - add a cpp-flag option for a re-ordered mapping (potentially more
272        efficient), but because this changes the results, turn it off by
273        default
274      - replace the save statement by local common blocks
275    o utils/matlab:
276      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
277      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
278        instead of local script "load_cs.m".
279    o pkg/seaice:
280      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
281        to the scalarProductMetric and the unrolling. By chance this does not
282        change the verification experiment, because of the particular domain
283        decomposition
284    o pkg/diagnostics:
285      - change default missing_value from UNSET_RL to -999.
286    o pkg/layers: improve vectorization of layers_fluxcalc.F
287      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
288        time spent in this routine by more than a factor of 3 on an NEC-SX8
289      - step 2: replace search algorithm by a bisection algorithm found in
290        Press et al. Numerical Recipes in Fortran. This algorithm can be
291        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
292        For now, use this algorithm only for TARGET_NEC_SX defined.
293      - moved the search algorithm into a separate subroutine, that is kept
294        within the same file for automatic inlining.
295      - modified catching potential errors
296    o pkg/ecco:
297      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
298    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
299      - modifications for ALLOW_GENTIM2D_CONTROL
300      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
301      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
302      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
303      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
304    o model/src:
305      - account for moist thermodynamics in (dry) potential temperature equation;
306        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
307        and cpl_aim+ocn.
308      - also switch to standard compiler (gfortran, was using ifort previously)
309        for fizhi-cs experiments reference output.
310    o pkg/ctrl:
311      - 1st step toward generic time-varying control variable (2D) via CPP option
312        ALLOW_GENTIM2D_CONTROL
313      - note new namelist ctrl_nml_genarr in data.ctrl
314    o verification/global_ocean.cs32x15:
315      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
316        thsice calling sequence and update "output.icedyn.txt" output file.
317    o pkg/ptracers:
318      - from Ryan A.: code to allow to restart a tracer at regular time interval
319        specifying a reset frequency and a reset-phase (for each tracers).
320    o pkg/thsice:
321      - implement new sequence of calls for thsice+seaice:
322          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
323          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
324      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
325        in CPP_OPTIONS.h) to recover old sequence;
326      - update diagnostics for Intermediate State thsice diagnostics: now filled
327        just before advection (instead of just after advection in old sequence);
328      - update output of experiment offline_exf_seaice (standard test);
329      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
330        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
331    o pkg/aim_v23:
332      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
333      - use standard pkg/mdsio routines to read & write CO2 pickup file;
334      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
335      - Implement new sequence of calls for seaice advection (with thsice and
336        seaice diffusion): do ice advection after ice-Thermodynamic (previously
337        was done before); change aim_do_physics.F (split the bi,bj loops block);
338      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
339    o pkg/thsice:
340      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
341        where just seaice diffusion is used without seaice-dynamics.
342    
343    checkpoint64c (2013/01/18)
344    o pkg/seaice:
345      - add a parameter JFNKres_tFac that can replace JFNKres_t
346        (= JFNKres_tFac*JFNKresidual before JFNK solver)
347      - add a line search option to the JFNK solver
348      - move update of u/vIce and computation of initial residual into a separate
349        routine (same file); makes the code a little easier to read (?)
350      - the line search requires computation of the residual and for some reason
351        I cannot do the update of u/vIce at the beginning of the Newton loop
352        without changing the results, so we move computation of the new residual
353        also to the end of the Newton loop, even without the line search
354    o pkg/mdsio:
355      - write missing value (corresponding to undefined array value) to meta files;
356        skip this if missing value is one (UNSET_RL would be a better value for the
357        case of undefined missing value but it's current the default missing-value);
358        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
359    o pkg/exf & thsice:
360      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
361        diagnostics) even when SHORTWAVE_HEATING is #undef;
362    o verification/cfc_example:
363      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
364        illustrate how to use it).
365    o verification/offline_exf_seaice:
366      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
367        files to only one time-record.
368      in input.thermo: narrow the 2 bands of low initial ice-concentration near
369        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
370        snapshot output; same mcPheePiston value as in thsice with
371        surf-current=0.2m/s.
372      in input.thsice: similar set-up as in input.thermo (channel with same seaice
373        initial conditions).
374    o verification/cfc_example:
375      - update file "data" with more standard choice (default rotationPeriod,
376        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
377        set deltaTFreeSurf to deltaTtracer) and update the output.
378    o pkg/layers:
379      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
380      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
381    o verification/offline_exf_seaice:
382      - set all {field}period to zero for constant-in-time forcing (not tested
383        anywhere else).
384    o verification/offline_exf_seaice:
385      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
386      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
387    o model/src:
388      - implement Finite-Volume method for (hydrostatic) presure gradient
389        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
390    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
391      - In order to be compatible with the default EVP code, this requires changing
392        the EVP code around a little; and because any small change immediately
393        breaks the lab_sea.hb87 verification experiment, the reference output is
394        updated two times (each time the remaining aggrement was only 2 digits):
395        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
396        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
397        The adjoint test lab_sea.evp also needed to be updated.
398      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
399        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
400        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
401        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
402        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
403        kept obscure, because I need to test it a little more.
404    o pkg/cheapaml:
405      - fix few incorrect type (_RL/_RS) in subroutine calls.
406    o pkg/seaice:
407      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
408        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
409    o model/src:
410      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
411        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
412        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
413    o pkg/cheapaml:
414      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
415        update output of experiment cheapAML_box.
416      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
417        and set them only in one place (cheapaml_readparms.F).
418      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
419      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
420        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
421    o model/src/the_main_loop.F:
422      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
423    o pkg/seaice:
424      - remove legacy branch code.
425      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
426    o verification/*/code*/SEAICE_OPTIONS.h:
427      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
428        SEAICE_CAP_HEFF).
429    o pkg/cheapaml:
430      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
431        to load new forcing fields.
432      - add missing "_d 0" where it's needed; + some editing (improve indentation).
433      - remove switch to "-r8" compiler option (no longer needed) in verification
434        cheapAML_box, keep same output (small trucation error differences).
435    o verification/offline_exf_seaice:
436      - add thermodynamics only test.
437    o verification/cheapAML_box:
438      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
439        keep same output (same 14 digits for cg2d).
440      - switch on "-r8" compiler option (some numerical values are missing
441        the "_d 0") and update output (only 6 digits for cg2d were preserved).
442    
443    checkpoint64b (2012/12/24)
444    o pkg/cheapaml:
445      - remove un-used variables (Qnet,EmPmR) from pickup files.
446      - store tendency of advected variables into cheapaml pickup file
447        and fix the AB-2 restart.
448    o verification/offline_exf_seaice and lab_sea adjoint:
449      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
450      - switch to 4 time steps in offline, consistent with lab_sea.
451      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
452      - update results after change of experiment seaice.
453    o pkg/seaice:
454      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
455        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
456        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
457        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
458    o model/src:
459      - add run-time parameter to select CG2D solver minimum-residual solution
460        (in case of a poor convergence).
461    o pkg/seaice/seaice_lsr.F
462      - move calculation of matrix coefficients into new
463        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
464        file; the main purpose of this change is to be able to reuse the code
465        in S/R SEAICE_PRECONDITIONER
466      - modify the computation of the residual so that the mass of sea-ice
467        is not used twice; this simplifies the calculations, but since
468        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
469        not tested in testreport---this does not affect the testreport results.
470    o verification/seaice_obcs:
471      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
472        verification/lab_sea/input.salt_plume; changes results/output.txt*
473    o model/src:
474      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
475    o pkg/seaice:
476      - improve description of parameters in seaice_fgmres.F and start
477        cleaning up the code
478      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
479        second argument
480      - add a metric based on grid cell area to SEAICE_SCALPROD; update
481        results of offline_exf_seaice.dyn_jfnk
482      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
483    o pkg/aim_v23:
484      - fix an other bug in dissipation heating (grid-cell area was missing).
485    o model/src + pkg/seaice:
486      - add global (multi-tile) linear solver for pair of tri-diagonal system
487        along X and Y lines, respectively for U and V component.
488        Note: 1) MPI and cube-exchange not yet coded.
489            2) probably not accurate for poorly conditioned / large size problem.
490      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
491        default: not compiled and not used.
492    o pkg/seaice:
493      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
494        introduce bi/bj loops and use global_sum_tile_rl instead of
495        mpi_allreduce in seaice_fgmres.F
496      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
497      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
498      - add a verification experiment for JFNK in offline_exf_seaice
499    o verification:
500      - change (for now, only fwd test) offline_exf_seaice experiment:
501        use a re-entrant channel with idealized coastline (trapezoidal shape)
502        at southern boundary to explore seaice dynamics and thermodynamics
503        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
504        secondary test (input.thsice) use thermodynamics only with SST relaxation.
505      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
506    o pkg/exf:
507      - disable "sstExtrapol" when Nr=1
508    o verification:
509      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
510        to test pkg/cheapaml.
511    o pkg/aim_v23 & pkg/shap_filt:
512      - fix dissipation heating (erroneous gravity multiplication factor).
513    o pkg/seaice:
514      - remove unused field pressPre from jfnk solver
515      - rename two subroutines in seaice_preconditioner.F
516    o eesupp/src:
517       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
518    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
519       - remove wrong parts of the rhs and the lhs (were in there
520         because I did not understand the concept of this preconditioner)
521       - add an exchange between u- and v-sweep. This increases communication
522         by a factor of two but improves the convergence of jfnk. Ideally,
523         one would like the u- and v-sweep to be independent. So far within
524         undocumented ifdefs
525       - reorganize the extra computations for printing the residuals
526    o tools/genmake2:
527      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
528        since it's not necessary (and was preventing to use MNC in some cases).
529    
530    checkpoint64a (2012/11/16)
531    o pkg/autodiff:
532      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
533        autodiff_readparms.F no longer depends on calling order (within
534        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
535        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
536        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
537    o pkg/obcs:
538      - adding tidal velocity forcing capability to obcs
539        for usage example, see verification/seaice_obcs/input.tides
540    o pkg/seaice:
541      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
542        SEAICE_LSRrelaxU/V
543      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
544    o pkg/aim_v23:
545      - implement heating from friction (bottom friction and stratospheric drag).
546    o pkg/shap_filt:
547      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
548        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
549  o model/src:  o model/src:
550    - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in    - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
551      time-constant addMass field from file (addMassFile);      time-constant addMass field from file (addMassFile);

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