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revision 1.1823 by jmc, Tue Feb 12 22:26:11 2013 UTC revision 1.1999 by jmc, Sat May 24 13:26:28 2014 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint64x (2014/05/24)
8    o verification/lab_sea:
9      - update adjoint and TLM output following changes to pkg/salt_plume
10      - un-do the update after putting back local recip_Cp in few places.
11    o pkg/salt_plume: modifications by An Nguyen:
12      - add capability to do brine rejection (salt-plume) as function of
13        volume+tracers (instead of only salinity tracer).
14      - conserve volume by exchanging volume from each kLev to above to
15        accommodate in-coming brine volume
16      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
17      - switch KPP surf buoyancy due to brine forcing to 3-d
18        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
19      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
20      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
21        in East/West Arctic.
22    o pkg/sbo:
23      - incorporate modifications from Katherine Quinn to enable the use of sbo
24        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
25        output for future testreport verification (unfinished).
26    o pkg/atm_phys:
27      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
28        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
29        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
30    o pkg/seaice
31      seaice_calc_ice_strength.F: modify expression to avoid divisions
32        (affects truncation)
33      seaice_do_ridging.F: clean up the insectarium
34      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
35      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
36      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
37      - add some debugging information and error messages (warnings)
38    o model/src: modifications relatd to atmosphere p*:
39      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
40      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
41        of vertical profile tRef in geopotential background and anomaly.
42      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
43        and pkg/atm_phys.
44      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
45        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
46    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
47    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
48        not used right now, but can be used in BGC packages to fix conservation.
49    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
50        other packages too.
51    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
52        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
53    o model/src:
54      - since we have several heat capacity (even in model/src), define "recip_Cp"
55        as local variable (no longer in common block) to avoid any confusion.
56      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
57    o pkg/exf:
58      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
59        air density as function of air Temp, Humidity and atm pressure.
60    
61    checkpoint64w (2014/05/02)
62    o verification:
63      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
64        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
65        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
66        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
67        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
68    o model/src: for atmosphere in p* coords:
69      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
70      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
71        but not yet activated.
72    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
73      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
74      - this changes the results (but not for any verification experiment, because
75        none tests this), but avoids having an extra field in the restart files
76    o pkg/seaice: remove global variable TICE (not needed)
77      - replace by TICES or local variable where necessary (cost_seaice_test,
78        seaice_diagnostics_state)
79      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
80      - use specific read/write routines for reading and writing individual leves
81        of a multilevel field
82    o pkg/ctrl & model/inc:
83      - move additional anomaly fields of control vars (related to options:
84         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
85        from DYNVARS.h into new header file: CTRL_FIELDS.h
86    o pkg/seaice: some small modifications to the ridging code
87      - make fw2ObyRidge a global variable and add the freshwater flux to
88        seaice_growth
89      - pass actual thickness from seaice_prepare_ridging, so that it is
90        computed only in one place and compute it in the same way as in
91        seaice_growth
92      - initialise more fields in seaice_do_ridging that where cause floating
93        point exceptions over land
94    o pkg/seaice: preparations for ridging code and first real ridging code
95      - move most of "PART 1" of S/R seaice_growth into a new and separate
96        S/R seaice_reg_ridge that will both regularize the state variable after
97        advection call the actual ridging routine;
98      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
99        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
100      - remove ridging code from seaice_advdiff
101      - clean up remaining part 1 of seaice_growth in an attempt to make it
102        more readable (this is probably subjective)
103      - call seaice_itd_redist once in the initialisation phase to have the initial
104        conditions in the correct category
105      - finally: add new ridging routine for ITD code
106    
107    checkpoint64v (2014/04/11)
108    o pkg/ecco:
109      - add runtime parameters mdt[start,end]date[1,2]
110      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
111    o pkg/seaice:
112      - make deltaC a global variable, so that it can be used in ridging code
113      - first step towards ridging: introduce new routines that compute
114        ice strength based on ridging parameters
115      - add diagnostic for HSNOWITD
116      - add opnWtrFrac as a global variable (required for ridging scheme)
117    o pkg/salt_plume + pkg/seaice/seaice_growth.F
118      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
119        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
120    o verification/hs94.1x64x5:
121      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
122      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
123    o autodiff:
124      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
125        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
126        For now, only in pkgs used in verification/hs94.1x64x5.
127      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
128        which are specific to TAF/TAMC).
129      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
130        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
131        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
132      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
133        building mitgcmuv_ad (make adAll).
134    o pkg/ecco:
135      - cost_gencost_seaicev4.F:
136         reformulate proxy cost as function of sst and local param SEAICE_freeze
137         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
138      - add stop statement if old names siv4-[sst,vol] are used
139      - add snapshots + cost reports for atmospheric longwave
140      - remove factor 0.1 in front of wtau[u,v]
141      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
142         ALLOW_TMI_SST_COST_CONTRIBUTION
143    o pkg/atm_phys:
144      - add some diagnostics for Short-wave and for convection S/R.
145    o pkg/seaice/seaice_growth:
146      - fix a bug in the lateral melt parameterization for SEAICE_ITD
147        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
148      - rearrange loop order for better vector code in the same code block
149      - rewrite the floeDiameter formula to have fewer divisions
150      -  (miraculously) none of this changes the results of seaice_itd
151    o pkg/smooth:
152      - move param smooth2Ddiffnbt to pkg/ecco
153    o pkg/salt_plume:
154      - salt_plume_frac.F:
155         clean up local param names
156         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
157    o pkg/rw:
158      - add RS version of S/R READ_MFLDS_LEV.
159    o pkg/streamice:
160      - fix the restart test by writing/reading pickup_streamice files.
161    o pkg/seaice:
162      - refine checks for jfnk-related parameters
163      - comment out if statement with SEAICEuseIMEX parameter as long as there
164        is no IMEX code to avoid confusion and surprises
165    
166    checkpoint64u (2014/03/07)
167    o verification/MLAdjust:
168      - rename secondary test suffix:
169         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
170         0.leithD -> AhFlxF  + switch to flux-form
171         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
172         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
173    o pkg/mom_vecinv:
174      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
175        to be before mom_calc_visc.F)
176      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
177      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
178        this is simpler for the adjoint and for diagnostics.
179    o model/src + pkg/momentum:
180      - add input files for  2-D additional Western and Southern cell-edge wall
181         (e.g., to add "thin-wall" where it is =1).
182      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
183        using 2nd hFacZ that is computed from initial (fix domain) hFac
184      - known limitations of thin wall implementation: not yet coded for sigma
185        coords; not working with CD-scheme neither.
186    o pkg/seaice:
187      - rename recently introduced parameters from (wrong name) AB to
188        BDF (backward difference time discretisation)
189      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
190    o tools/adjoint_options:
191      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
192    
193    checkpoint64t (2014/02/01)
194    o pkg/ecco
195      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
196        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
197      - replace hard-coded record number and period which only work for monthly
198        with read-in runtime param that works for other periods (month,day,year)
199    o pkg/thsice
200      - corrected store directive fixes thsice adjoint gradient checks
201    o genmake2 & testreport:
202      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
203        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
204        Update testreport accordingly. No need to set "export OPENAD=true"
205        in adjoint_options/adjoint_oad anymore (will be removed later).
206    o pkg/shelfice:
207      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
208        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
209        so that surface forcing applies to k=kSurf if using pkg/shelfice.
210    o pkg/ctrl, pkg/grdchk, pkg/ecco:
211      - Changes to make GENARR more modular (i.e. invisible if not used)
212    o model/src/temp_integrate.F and salt_integrate.F
213      - re-include store directives that were removed on Dec 27th.
214    o model/src/external_forcing_surf.F
215      - add storage directives for EmPmR and PmEpR to avoid recomputation of
216        seaice_model in the adjoint that is problematic when seaice_model is
217        turned off in the adjoint. The resolved issue dated back to July when
218        EXTERNAL_FORCING_SURF call was moved.
219        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
220    o pkg/exf/exf_check.F
221      - fix a small bug again (originally found by Wentao Liu, now found again)
222      - streamline error output
223    o pkg/streamice and aim_v23:
224      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
225        Apple's /usr/bin/cpp knows what to do:
226        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
227        Target: x86_64-apple-darwin13.0.0
228    
229    checkpoint64s (2014/01/05)
230    o tools/adjoint_options:
231      - switch to fastopt.net TAF server (instead of default fastopt.de) for
232        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
233    o model/src:
234      - remove some unnecessary TAF storage directives in forward_step.F and
235        in dynamics.F (note: not always removed by TAF, e.g., double storage
236        of kappaRU,kappaRV in former version of dynamics.F).
237    o model/src & pkg/ptracers:
238      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
239        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
240        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
241      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
242      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
243      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
244    o useSingleCpuInput separates single-CPU input from single-CPU output;
245        for now only implemented for in exf_interp_read.F
246    o verification/advect_xy:
247      - fix missing EXCH call in local version of ini_salt.F and update output.
248    o momentum diagnostics:
249      - fix which deltaT is used in Total-Tendency diagnostics.
250      - fix typo in diagnostics for momentum tendency from AB.
251    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
252        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
253    
254    checkpoint64r (2013/12/08)
255    o verification/*/results:
256      - Update reference output of experiments that were passing with just 13 digits
257         (make it easier to detect future changes in results)
258    o model/src & pkg/ptracers:
259      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
260        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
261        to inside ptracers_integrate.F ; remove ptracers_advection.F
262    o coupling interface pkgs:
263        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
264      - change the config check to test the agreement of Ocean Depth
265        with ATM land/sea mask (instead of ATM orography);
266      - send to coupler the number of coupler time-steps to do for this run:
267        this allows to check for consistency and don't need anymore to be
268        specified in parameter file "data";
269      in coupler:
270      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
271      - improve report to log-file of config setting (pass log-file unit to few S/R)
272    o pkg/compon_communic:
273      - add coupling send/receive for non-tiled integer vector;
274      - add S/R to check and stop if any proc has an error (similar to
275        eesupp/src/stop_if_error.F but single thread and across Comm_World).
276    o pkg/exch2:
277      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
278        through list of all tiles my proc owns.
279    o model/src:
280      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
281        from rTrans) to simplify dependencies (no need to store rTrans anymore in
282        calling S/R); this affects AD results at machine truncation level:
283        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
284        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
285    o tools/build_options:
286      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
287    o coupling interface pkgs:
288        [compon_communic, atm_compon_interf & ocn_compon_interf]
289      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
290        to each S/R that needs it; remove un-used variables.
291      - change component tile registration (cpl_register.F in both compon_interf
292        and mitcomponent_tile_register.F) to pass the full list of tiles
293        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
294      - with pkg/exch2: adopt the same convention used for I/O to define mapping
295        towards coupler global array (unless W2_useE2ioLayOut=F):
296         a) can now use different tiling between atm & ocn comp.
297         b) no needs to modify the run-Off map when changing tiling (was needed
298            even if using the same tiling between atm & ocn).
299         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
300            full land tiles); not yet tested.
301      - check for valid mapping from comp. tile to coupler global array
302      - improve report of tile registration results to log file.
303    o pkg/exch2:
304      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
305        tile-registration (CPL_REGISTER);
306      - activate (un-comment) definition and setting of "W2_tileIndex" list to
307        store the local bi,bj indices of each tile;
308      - also print bi,bj in local report to log file;
309      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
310        Jun 2009 modif of pkg/exch2).
311    o testing on baudelaire:
312      - run 2 tests at a time: no significant slow down (since enough cpu) and
313        get the full set of test done earlier
314      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
315    o model/src/thermodynamics.F and routines called from it:
316      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
317        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
318        velocity (outp) by adding bolus velocity.
319      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
320        mass transport from velocity + lateral grid cell area
321      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
322      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
323     in thermodynamics.F
324      - remove k from thermodynamics.F and move it to temp_integrate.F
325        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
326        loop).
327      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
328        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
329        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
330        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
331      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
332        global_ocean.90x40x15, tutorial_global_oce_biogeo and
333        tutorial_tracer_adjsens (+ TLM output).
334    o tools/OAD_support and (verification/*/) code_oad:
335      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
336        module conversion ; remove unneeded CPP_EEOPTIONS.h.
337      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
338        version (closer to model/inc/CPP_OPTIONS.h).
339    o model/src:
340      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
341        retired list of parameters (routine FREEZE has been replace by surface
342        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
343    o pkg/gmredi:
344      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
345        velocity (same scheme but affects machine truncation) for GM_AdvForm.
346      - update output of FWD experiments: front_relax.bvp,
347        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
348    
349    checkpoint64q (2013/11/17)
350    o verification:
351      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
352        tutorial_global_oce_biogeo and global_ocean.90x40x15.
353      - generate new output (growth & melt) for seaice_itd experiment after
354        updating the input pickup_seaice files (previously wrong).
355    o pkg/cost:
356      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
357        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
358        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
359          cannot be applied to var in common block).
360        o allows to get results independent of tile-per-proc setting (if using
361          slower GLOBAL_SUM_SEND_RECV option).
362      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
363        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
364        forward gradients: update output).
365      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
366        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
367    o pkg/mom_common:
368      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
369        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
370        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
371        ensure that all field value that are used are set.
372    o tutorial_deep_convection (smag3d):
373      - add missing scaling in mom_calc_smag_3d.F;
374      - set smag3D_coeff in input.smag3d such that results do not change.
375    o pkg/dic:
376      - change dic_cost.F to compute cost on each tile first and then apply
377        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
378        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
379      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
380    o eesupp/src & pkg/mdsio:
381      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
382        (from pkg/mdsio) since they are no longer used for tape IO.
383      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
384        (+ keep a copy in pkg/atm_ocn_coupler).
385    o verification/isomip:
386      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
387    o tools/build_options:
388      - optfile linux_amd64_ifort11, fast (no ieee) case:
389        to get a working restart for all experiments, add "-fp-model source"
390        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
391    
392    checkpoint64p (2013/10/20)
393    o pkg/autodiff:
394      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
395        criteria, return to simple (default) tape IO format.
396    o pkg/mdsio (+ eesupp/src):
397      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
398        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
399      - fix globalFile and singleCpuIO options using simpler global mapping.
400      - new pairs of scatter/gather vector S/R (one for each type, generated from
401        template) corresponding to simpler global mapping.
402      - adread_write.F: switch to new S/R (but leave old calls commented) and write
403        to globalFile when parameter globalFiles is set to True.
404      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
405    o pkg/autodiff:
406      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
407        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
408        missing, just add a STOP if array type do not match.
409    o pkg/exf:
410      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
411         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
412         and rename array obsSIce to exf_iceFraction.
413    o tutorial_deep_convection:
414      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
415        for now all in this exp. code dir.
416      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
417        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
418    o eesupp/src:
419      - added SINGLE_DISK_IO option because reading of parameter files on
420        very large number of processors did not work with existing set-up
421    
422    checkpoint64o (2013/09/25)
423    o pkg/atm_phys & atm_compon_interf:
424      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
425    o tools/build_options:
426      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
427        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
428        remove CPP setting (was identical to genmake2 default).
429    o pkg/gmredi & model/src: Some updating and work done on the residual model.
430      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
431      - fixed up the calculation of the eddy stress and how it is added to the
432        external forcing via taueddy_external_forcing.F
433      - at the moment, it is very experimental and only works with the variable eddy
434        diffusivity calculated in gmredi_k3d.F
435    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
436        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
437    o testreport (& tools/do_tst_2+2):
438      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
439    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
440      - remove CPP='cpp -traditional -P' (this is genmake2 default)
441      - add switch (for big setups) to use 'medium' memory-model (but leave it
442        commented out for now). Note: needed with FC 19 to compile big setups.
443    o pkg/atm_compon_interf:
444      - regroup per field origin (model & pkgs) the coupling storage routines
445         (which accumalate in time each coupling field)
446      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
447        update accordingly + simplify aim_do_physics.F
448    
449    checkpoint64n (2013/08/26)
450    o pkg/bbl:
451      - update formulation to reduce dispersion of tracer properties in bbl
452      - replaced horizontal and vertical transport parameters with velocities
453      - changes results for verification/global_with_exf.yearly
454    o verification/halfpipe_streamice:
455      - change to matrix construction; update both Fwd & AD output.
456    o verification/tutorial_tracer_adjsens:
457      - OpenAD test: switch to vector-invariant momentum since fluxform with
458        rStar causes problems with OpenAD; update output.
459    o tools:
460      - genmake2: define a common prefix for all temp-file names ; move them
461        to local /tmp disk (but would be easy to move them back);
462      - xmakedepend: apply the same switch for temp-files.
463    o pkg/offline:
464      - changes for use with rStar (NLFS): assume that we continue to provide
465        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
466        output files) and apply r* scaling at each time-step (function of the time
467        varying Eta field); use normal pickup files (needed for restart with NLFS).
468    o adjoint with OpenAD:
469      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
470        package openad.  This package has to be compiled for all runs with OpenAD
471        instead of specifying code_oad_all as a modification directory.
472      - link the fortran templates from tools/OAD_support to the build directory
473        for preprocessing to avoid conflicts between different setups compiled
474        simultaneously and simplify cleanup.
475    o pkg/exf:
476      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
477        main model or other pkgs are exchanged in EXF_MAPFIELDS).
478    o model/src:
479      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
480        (similar to do_fields_blocking_exchanges.F).
481    o tools/genmake2:
482      - remove TAF output src code just before calling staf (when not doing a fresh
483        built, will stop if things go wrong with staf).
484      - fix target "adobj" (left from TAF version-2 transition)
485    o pkg/diagnostics:
486      - add a parameter to track the status of pkg/diagnostics activation;
487        this replace/extend the use of logical param "settingDiags" (to check
488        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
489        New S/R to print error message and stop when pkgStatus is not right.
490      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
491    
492    checkpoint64m (2013/08/13)
493    o model/inc:
494      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
495        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
496    o pkg/kpp & aim_v23:
497      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
498    o pkg/seaice:
499      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
500        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
501      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
502    o eesupp/src:
503      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
504        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
505    o switch to TAF version-2:
506      - add flow directives to "freeze" naming convention for ad-routines that
507        are used in I/O routines of adjoint state and associated common blocks
508        that are used in adcommon.h (backward compatible with version-1)
509      - update all ad-optfiles (in tools/adjoint_options + few local to some
510        verification exp) to switch to latest TAF version (currently 2.5.5);
511        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
512        out except for diva).
513      - the major change with TAF version-2 is that both the differentiated
514        routines and the forward routines (new) are returned as part of the TAF
515        output source code. Update genmake2 accordingly.
516      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
517        with version-2 when compared to TLM or FWD gradient); other experiments
518        output show minor changes (machine truncation level); update the few AD &
519        TLM output with 12 matching digits only (some prior to version-2 switch).
520    
521    checkpoint64l (2013/08/05)
522    o model/src:
523      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
524      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
525        when using TAF but only if using OpenAD.
526    o pkg/mom_common+fluxform+vecinv:
527      - always set horiz. viscosity arrays to background value before calling
528        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
529        only when using variable horiz. viscosity (useVariableVisc=T);
530      - simplify mom_vecinv.F (only 1 block for momViscosity).
531    o pkg/mom_common: variable horiz. viscosity in NH code
532      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
533        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
534      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
535        useBiharmonicVisc & useVariableVisc.
536      - fix old bug (already in 1rst implementation of variable horizontal viscosity
537        in calc_gw.F, version 1.27, 2006/06/20):
538        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
539        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
540      - change background horiz viscosity in vertical momentum (gW) to always be
541        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
542        any type of variable viscosity, e.g., viscAh/4Grid)
543      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
544        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
545        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
546        default viscAh,viscA4 is zero).
547    o model/src:
548      - extend length of drC & recip_drC from Nr to Nr+1.
549    o Divided Adjoint (DIVA) with MPI:
550      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
551      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
552        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
553    
554    checkpoint64k (2013/07/23)
555    o tools/OAD_support:
556      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
557        and remove it from genmake2.
558    o tools/build_options:
559      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
560        MPI_HEADER_FILES list (let genmake2 find the missing headers)
561    o verification/halfpipe_streamice:
562      - change to driving stress formulation; update both Fwd & AD output.
563    o tools/genmake2 and Divided Adjoint with MPI:
564      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
565      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
566      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
567        Makefile, which is set by genmake2, and check which mpi-headers are needed.
568        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
569      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
570    o testreport:
571      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
572        perform additional runs (number of additional runs is "add_DIVA_runs" taken
573        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
574    o verification/lab_sea (AD test):
575      - change to test Divided Adjoint Run in this set-up (both standard AD test
576        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
577    o pkg atm_ & ocn_compon_interf:
578      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
579        staggerTimeStep implementation) and disable (retired) corresponding
580        parameter.
581    o pkg/offline:
582      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
583      - add S/R OFFLINE_CHECK to print offline parameter summary
584        and stop if loading a file that is not used;
585      - enable to calculate GMRedi tensor, KPP mixing and convective index
586        when the corresponding file(s) is/are not specified (but pkg is used).
587      - comment out resetting of monitorFreq (to endTime) since it still useful
588        for monitoring CFL numbers and checking offline fields.
589    o OpenAD:
590      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
591        smaller standard output) and generate new (smaller) output (on baudelaire
592        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
593    o model/src:
594      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
595        (where external_forcing_adjust was called) and change list of arguments;
596      - merge external_forcing_adjust.F into external_forcing_surf.F
597      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
598        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
599        previously in file "balance_relax.F", now removed); remove corresponding
600        arrays in FFIELDS.h.
601      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
602        a hack for getting back surfaceForcingS (loaded from file) when using
603        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
604      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
605        (was getting only 11 digits for AD-grad, due to different truncation
606         error in AD code).
607    
608    checkpoint64j (2013/07/04)
609    o pkg/offline:
610      - to enable the use of other features with pkg offline (e.g., obcs),
611        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
612      - comment out "allowFreezing" (now active) in 2 offline testing exp.
613    o pkg/exf ALLOW_RUNOFTEMP
614      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
615      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
616      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
617    o pkg/atm_phys:
618      - allows to add some damping on uVel,vVel (strength only function of k).
619    o verification, ad-tests:
620      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
621        global_ocean_ebm and offline_exf_seaice.thsice.
622    o verification/halfpipe_streamice:
623      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
624        flux input boundary conditions to be ignored; a fix for this bug changed
625        verification results for forward test.
626      - add adjoint test.
627    o pkg/ptracers:
628      - allow to restart without SOM pickup (resetting SOM to zero).
629    o pkg/gmredi:
630      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
631      - It uses mixing length theory and suppression by steering level effects to
632        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
633        to JPO, for more details).
634      - It also uses the diffusivity to calculate an eddy induced streamfunction
635        based on a PV closure (rather than a buoyancy closure as in GM).
636      - New files added to pkg/gmredi:
637        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
638          induced overturning streamfunction (called from gmredi_calc_tensor)
639        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
640          for use in gmredi_k3d
641        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
642          the eddy diffusivity
643    
644    checkpoint64i (2013/06/18)
645    o pkg/cheapaml:
646      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
647        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
648        with pkg/cheapaml.
649    o utils/python: add subpackage for cubed sphere function, first example is
650        simple cs.pcol to plot 2D fields on a map
651    o pkg/streamice:
652      - This is a new package in MITgcm, which solves dynamic equations for ice
653         sheets and ice streams
654      - At the moment it is independent of atmosphere/ocean dynamics, or any
655        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
656        ed that this will change)
657      - There is a new verification exercise that tests it, halfpipe_streamice,
658        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
659        rectangular embayment
660      - halfpipe_streamice is forward-only for now, will have TAF test soon
661      - for questions, email dgoldber@mit.edu
662    o pkg/thsice:
663      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
664        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
665      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
666         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
667      - allow precip from pkg/cheapaml to make snow over seaice.
668    o pkg/cfc:
669      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
670      - remove atmos CFC 2-D arrays from common bloc (now local variables)
671      - change some hard-coded constant to run time parameter for reading and
672        and interpolating atmospheric CFC ; keep same default as previously.
673      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
674      - put arguments in standard order: myTime, myIter, myThid
675      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
676        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
677      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
678      - new routine to print summary of CFC params and check for consistency.
679    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
680      similar to thsice_advdiff.
681      Note that for the B-grid case the routine parameters uc/vc are overwritten.
682    o pkg/cfc:
683      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
684        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
685      - fix interpolation of atmphspheric CFC between Sorthern and Northern
686        hemisphere value.
687    o pkg/seaice:
688      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
689    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
690                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
691      - requires an additional time level that is stored in the pickup
692      - you can start with AB2 from a pickup without this time level with
693        pickupStrictlyMatch = .false.
694    
695    checkpoint64h (2013/05/26)
696    o pkg/cheapaml:
697      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
698        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
699      - consistent treatment of uWind,vWind location: assume everywhere in
700        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
701        (Note: was already the case for Tair,Qair advection);
702        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
703      - compute diabatic forcing only in the interior (excluding overlap regions)
704      - fill in array "Qsw" (for short-wave heating);
705      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
706        before any update (consistent with MITgcm state var diagnostics);
707      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
708        non periodic ; + adjusted for uWind,vWind (C-grid).
709    o pkg/seaice:
710      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
711        add explicitly pkg/exf in experiments that currently use pkg/seaice.
712      - allows to compile pkg/seaice without pkg/exf.
713    o tools/OAD_support:
714      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
715        of array "ourStepOf" in function rvNextAction (revolve.F90).
716    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
717      - change pkg name (to be used with other atmospheric physics pkg)
718        but by-pass CVS when making the new pkg so that we keep the CVS history.
719    o pkg/offline:
720      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
721        (previously called from pkg/dic_surfforcing_init.F)
722    o model/src:
723      - re-order sequence of calls within packages_init_variables.F, using
724        standard order, except for:
725         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
726         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
727    o new pkg: atm_phys
728      - add entry point and source code (previously in contrib
729          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
730        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
731      - re-order sequence of calls within packages_readparms.F,
732         packages_init_fixed.F and packages_write_pickup.F
733        (but skip packages_init_variables.F because of TAF issues).
734      - update contrib/*/atm_gray/ experiment.
735    o pkg/seaice (ITD code):
736      - simplify and fix the writing of pickup-files for ITD case
737    o pkg/seaice (ITD code):
738      - introduce floe size dependent lateral melt for ITD case;
739      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
740      - update seaice_itd experiment main output.
741    o pkg/thsice:
742      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
743        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
744        changed accordingly pkg/atm2d.
745    
746    checkpoint64g (2013/05/01)
747    o pkg/exf ALLOW_RUNOFTEMP
748      - if defined,  river and glacier runoff temperature can be read-in from
749        runoftempfile; runoftempfile needs to have same format as runofffile
750    o pkg/thsice (& pkg/bulk_force):
751      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
752        for energy content of Precip + RunOff & Evap (like with pkg/exf).
753      - change computation domain to always be the interior (without overlap).
754      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
755    o verification/tutorial_global_oce_biogeo:
756      - add preliminary OpenAD setup (still has problems)
757    o pkg/seaice:
758      - turn some parameters for choosing the convergence criterion of
759        the inexact Newton method (JFNK) into runtime parameters for convenience
760      - clean up seaice_calc_viscosities.F: remove/retire two options for
761        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
762        the results of lab_sea/input because a division has been replaced by
763        a multiplication with the reciprocal (sumNorm)
764      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
765        convergence of solver (changes results, of course), and to test some
766        new features
767    o model/src:
768      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
769      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
770      - move forcing adjustment (balancing surface forcing) in specific S/R
771        where might also be applied exchanges (if needed) to forcing arrays.
772    o pkg/shelfice:
773      - allow to specify the Ice-Shelf mass per unit area (instead of
774        shelficeLoadAnomaly) and do the conversion from one to the other
775      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
776        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
777        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
778        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
779      - update isomip experiment forward output (get machine truncation error
780        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
781    o verification/offline_exf_seaice:
782      revise data.seaice in input.thermo and input_ad and update results accordingly
783        HO = 0.2, SEAICE_areaLossFormula = 2,
784        SEAICE_growMeltByConv = .TRUE.,
785        SEAICE_doOpenWaterMelt = .TRUE.,
786      Improve consistency with input.thsice and fix the spurious 500m ice corners
787    o verification/global_ocean.cs32x15:
788      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
789        in icedyn (thsice+seaice-dyn) test and update output.
790    o verification/offline_exf_seaice:
791      - adjust list of tested variables (with testreport) and update
792        standard test output with better slection of monitored fields.
793    o pkg/cd_code:
794      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
795        experiment lab_sea.hb87
796    o tools/genmake2:
797      - change default makedepend from the system default to tools/xmakedepend:
798        When no makedepend is specified, select tools/xmakedepend it the test pass,
799        otherwise select the system default (if exist and pass the test) or
800        try to build cyrus-makedepend ; stop if none of the 3 works.
801    o pkg/exf & pkg/thsice:
802      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
803        for energy content of Precip + RunOff & Evap. Assumes:
804       1) Rain has same temp as Air.
805       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
806       3) Run-Off comes at the temp of surface water (with same Cp)
807       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
808        put directly into Latent Heat flux & should use water-vapor heat capacity.
809       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
810        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
811    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
812        (compile when SEAICE_ALLOW_JFNK is defined)
813    o pkg/thsice:
814      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
815        implementation): move THSICE_AVE call after the advection (called directly
816        from thsice_do_advect.F).
817    o verification/global_ocean.90x40x15 and OpenAD:
818      New experiment for OpenAD is identical to the one in input_ad except that
819        multiDimAdvection=.FALSE.,
820      There is still an issue with this.
821    o pkg/thsice:
822      - account for ice velocity (ocean relative velocity) in turbulent heat flux
823        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
824        and offline_exf_seaice (main test).
825    
826    checkpoint64f (2013/03/31)
827    o verification/OpenAD:
828      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
829    o verification/isomip, pkg/shelfice and OpenAD:
830      - add OpenAD setup to this exp and make shelfice package work with OpenAD
831    o verification/tutorial_global_oce_biogeo:
832      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
833    o verification/offline_exf_seaice:
834      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
835    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
836      - add OpenAD setup to this exp and make ptracers package work with OpenAD
837    o pkg/seaice/seaice_evp.F:
838       mask the asymmetric contribution of the ice-ocean stress (when
839       the turningAngle is non-zero) over open water to avoid stripes
840       in the EVP-solutions after many EVP-substeps. This does not change
841       the verification experiment (because turningAngle=0 in that experiment),
842       but will affect other EVP solutions with turningAngle.ne.0
843    o verification, AD & TLM output:
844      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
845        additions and multiplications which affect results at machine truncation
846        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
847        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
848        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
849        digits of matching.
850    o pkg/seaice:
851       modify lsr-algorithm so that it vectorizes AND converges by using a
852       "zebra" method: split vector loop into two with step size 2; this
853       solves a general convergence problem for the JFNK solver on a vector
854       computer. It has the potential to even improve convergence for
855       non-vector machines, but it does change the results so it is turned
856       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
857       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
858    
859    checkpoint64e (2013/03/05)
860    o pkg/ecco and several verification experiments:
861       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
862       from ecco package, and revert to unified routine in model/src/
863       Adjust verification experiments accordingly, especially gloal_oce_llc90
864       Should conclude long-standing work by Gael to reconsile the_main_loop with
865       ECCO and will enable OpenAD's revolve loop in ECCO setup.
866    o pkg/generic_advdiff:
867      - implement compressible flow method for multi-dim advection (similar to
868        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
869        TAF generates many recomputations) to use it; no yet coded with implicit
870        vertical advection.
871      - change experiment advect_cs (new output) and advect_xy (same output)
872        to test compressible flow multi-dim advection.
873    o pkg/generic_advdiff:
874      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
875        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
876    o pkg/seaice:
877      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
878        bug affects two verification experiments (lab_sea and lab_sea.hb87),
879        recover old (wrong) results by setting noSlipFac = 2. in
880        seaice_calc_strainrates.F;
881      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
882      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
883        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
884      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
885    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
886      - new subroutines seaice_lsr_tridiagu/v
887      - introduce loop bounds i/jmin/max to be able to use a restricted
888        additive Schwarz method, but not used for now.
889      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
890      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
891    o OpenAD support
892       Reorganize S/R call for overall time-stepping loop to facilitate
893       OpenAD revolve loop replacement
894       (new S/R main_do_loop.F)
895    o model/src:
896      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
897      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
898        ADAMS_BASHFORTH2.
899    o pkg/cheapaml:
900      - add new parameter (default=F, same as before) to disable full domain
901        (including land) periodicity in X & Y dir.
902      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
903        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
904        into single S/R CHEAPAML_TIMESTEP.
905    
906    checkpoint64d (2013/02/17)
907    o pkg/monitor (angular momentum):
908      - do not add Eta contribution to the total AM if using rigid-lid;
909      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
910      - horizontal discretisation: compute Zonal wind contribution separately for
911        each component (instead of from cell centered averaged) and use the 4
912        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
913      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
914        FreeSurf) if using vectorInvariant momentum.
915    o model/src (horizontal grid):
916      - move initialisation of all horizontal grid arrays to null value
917        from specific horizontal grid S/R to main S/R INI_GRID;
918      - add 2 new arrays to project model C-grid velocity on to zonal direction
919        (similar to AngleCosC & -AngleSinC but at U and V point location) and
920        compute them in S/R CALC_GRID_ANGLES.
921    o pkg/seaice: replace a hard coded parameter by a runtime parameter
922        SEAICE_JFNK_tolIter
923    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
924        preconditioner for JFNK (run LSR into the overlaps as far as possible,
925        i.e OLx/y-2, but overwrite the solution in the overlaps)
926      - extend loop range in seaice_calc_viscosity
927      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
928      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
929      - slightly modify loops in tridiagonal solver lsr-preconditioner
930      - by default remove the extra exchange in seaice_preconditioner with a
931        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
932      - modify offline_exf_seaice so that old results without RAS are reproduced
933        for output.dyn_jfnk.txt
934      in seaice_fgmres.F (unrelated to RAS)
935      - add a cpp-flag option for a re-ordered mapping (potentially more
936        efficient), but because this changes the results, turn it off by
937        default
938      - replace the save statement by local common blocks
939  o utils/matlab:  o utils/matlab:
940    - fix tile-offset in rdmnc.m when output was produced using EXCH2.    - fix tile-offset in rdmnc.m when output was produced using EXCH2.
941    - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)    - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)

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