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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.947 by mlosch, Fri Jan 25 16:03:06 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
8      transitions for useExfYearlyFields
9      - add new subroutine that determines the file to read from for
10        use*YearlyFields = .TRUE. and .FALSE.
11    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
12      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
13      subroutines (which could be generated from a template, because they are
14      almost identical), for now they are included in obcs_prescribe_read.F for
15      simplicity
16    o pkg/exf:
17      - add a little more diagnostic to exf_interp_read (in analogy to
18        mds_read_field, can be turned off with debugLevel < debugLevA=1)
19      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
20        ugly but fast by unrolling short inner loops, inserting a unroll=8
21        directive in routine lagran, and splitting a loop and making do while the
22        outermost loop (the latter requires the intoduction of index arrays)
23    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
24    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
25      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
26    o verification/seaice_obcs: updated for restart test and latest options
27    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
28      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
29      for now this is only available for the C-grid code and also within
30      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
31    
32    checkpoint59m
33    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
34      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
35    o gad_som : fix flux output (& diagnostics) to have same units as other  
36      advection scheme fluxes (was previously multiplied by deltaT).  
37    o added verification/seaice_obcs both to test seaice open boundaries
38      and to provide an example matlab scrpt for generating them
39    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
40    o pkg/salt_plume: clean up salt_plume_frac.F to
41      remove redundancy in PlumeMethod 1 and 4
42    o pkg/kpp: added saltplume diagnostics
43    o pkg/obcs and pkg/seaice:
44      - do not set uice and vice to zero when OB*icefile are unspecified
45      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
46      - moved seaice tracer obcs after call to seaice_growth
47    o pkg/salt_plume: added various options for salt plume depth
48      criterion and for vertical distribution of the salt
49    
50    checkpoint59l
51    o pkg/ptracers: new version of ptracers pickup:
52      read meta file and write only fields which are needed to restart.
53      ( same logic as main pickup file ; also using pickupStrictlyMatch )
54    o pkg/seaice:
55      - add timescale for melting due to warm mixed layer as a means of
56        setting SEAICE_availHeatFrac more conveniently
57      - add a CPP-flag/runtime parameter check for flooding algorithm
58      - reformulated availHeat in seaice_growth.F to be independent of AREA
59    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
60      unit changes
61    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
62    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
63      SX vector computer.
64    o pkg/seaice:
65      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
66        seaice forcing fields can now be read only through pkg/exf
67      - removed some unused halos
68    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
69    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
70      or U/VICE from U/VWIND before computing U/VSTRESS
71    
72    checkpoint59k
73    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
74      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
75    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
76      all experiments pass when compile with un-initialised var. checking option.
77    o added pkg/salt_plume
78    o script to test restart (for now, in MITgcm_contrib/jmc_script)
79    o pkg/seaice: new read/write pickup version.
80      read meta file and write only fields which are needed to restart.
81      ( same logic as main pickup file ; also using pickupStrictlyMatch )
82    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
83    o lab_sea.hb87: modify the domain & update output.hb87.txt :
84      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
85      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
86      process. Fixed here by closing the domain at the Northern boundary.
87    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
88    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
89      a set of consecutive levels in/from a 3-D array.
90    o pkg/ptracers:
91      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
92      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
93    
94    checkpoint59j
95    o in pkgs: dic, obcs, offline, rbcs:
96      standard way to compute coeff. for time interpolation between 2 time reccords
97      which retains full precision (& make results less dependent on compiler).
98      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
99    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
100      packages instead of reading ice cover and wind speed separately
101    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
102     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
103      to allow to compile customized code before the update)
104    o cleaning-up:
105      - fix CPP instruction syntax in pkg/obcs
106      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
107        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
108      - fix some threads issue in IO parts.
109    o pkg/dic:
110      - add tons of "_d 0" (--> much better testreports !)
111       and then update outputs of tutorial_global_oce_biogeo
112    o pkg/mom_fluxform:
113      add a special version of momentum advection intended to conserve momentum
114      next to a bathymetry step or a coastline edge. (default = off = #undef)
115    o new read/write pickup version:
116      - for now, only implemented for main (mdsio) pickup file.
117      - write out only what is needed to restart; merge pickup_nh , pickup_ph
118        and main pickup together.
119      - read meta file; read only what is needed to restart; stop if a field
120        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
121        if it make sense (even if the restart is not perfect).
122      - if no meta file, assume that pickup to read corresponds exactly to
123        a pickup that would currently be written.
124      - read pickup written in the old format (until checkpoint59i) if it
125        recognizes an old meta file (no field-list).
126      - add a meta file in exp. which starts from a pickup: 2 cases:
127        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
128         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
129        b) a meta file describing the content of the associated pickup file
130         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
131    o pkg/mdsio & pkg/rw:
132      - new routine to read a meta file ; new set of routine to read
133        Multiple-fields file (with meta file).
134    o added open boundary conditions capability for seaice
135        HSNOW, HSALT, UICE, and VICE
136    
137    checkpoint59i
138    o adjoint:
139      * fix multiDimAdvection adjoint
140        (partial recomputation problem by TAF for fVerT(:,:,kDown)
141        and comlev1 size definition (maxpass vs. max. number of tracers)
142      * verification/global_ocean.90x45x15 adjoint now tests
143        NLFS and multiDimAdvection using DST3 (=30)
144      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
145    o pkg/kpp: add "_d 0" to real constant (if missing);
146      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
147      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
148    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
149      for internal parameters related to restart process (formerly from PARAMS.h)
150      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
151    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
152      as argument. (only atm2d & obcs write_pickup have not yet been updated)
153    o pkg/monitor:
154      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
155      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
156      - account for deep Atmosphere factor and density factor (anelastic)
157    o added open boundary conditions capability for seaice HEFF and AREA
158    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
159      thermodynamics
160      - requires a little reorganization, which affects the testreport results
161        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
162        so that now the conservative form is tested
163      - add a few comments
164    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
165    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
166    o add new diagnostics to seaice: advective, diffusive fluxes (only for
167      multidim-advection, for scheme 2 they are not filled) and transports,
168      thermodynamic growth rates
169    o change units of EmPmR (inside the code, + within coupling interface)
170      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
171      Affects results @ truncation level (cg2d match) and update output of
172       experiments: lab_sea(6), global_ocean.90x40x15(10),
173      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
174      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
175      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
176      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
177    
178    checkpoint59h
179    o pkg/exf:
180      - improve vectorization by moving if-statement out of loops in
181        exf_mapfields, exf_radiation
182      - exf_bulkformulae.F: introduce 2D fields and vectorize code
183    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
184    o testreport:
185      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
186        monitor & update offline_exf_seaice exp. output.
187      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
188    o pkg/seaice:
189      - bug fix in the evp solver: boundary conditions were affected be
190        masking of zMax/zMin (changes results)
191      - minor bug fix in boundary conditions in seaice_calc_strainrates
192        (changes results for no_slip)
193      - seaice_lsr.F: make interpolation of eta dependent on boundaries
194      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
195      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
196        stress formulation and no-slip boundary conditions
197    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
198      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
199    o pkg/seaice: a first HSALT time stepping equation has been checked in
200    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
201      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
202      without requiring DO-IF statements
203    o pkg/thsice:
204      use continuous power-law function for partition of energy between lateral
205      melting/freezing and thinning/thickening ; old code using step function
206      still available with #undef THSICE_FRACEN_POWERLAW
207      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
208    o testreport: change AD testing : check against results/output_adm.txt
209      using same scripts as for forward test.
210    
211    checkpoint59g
212    o adjoint testing: in preparation for changing testreport:
213      - output format: cost and grad written on separated lines
214      - ad output results in directory "results" (instead of "results_ad")
215    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
216    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
217    o pkg/ecco: allow user defined cost function contributions
218    o testreport:
219      Allow to choose (per experiment) the list of tested output variables
220       and the main variable (used to issue a pass/FAIL ) ;
221      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
222      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
223      Also modify printing of summary:
224       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
225       b) echo the list of tested variables in the individual summary.txt of
226          each experiment.
227    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
228      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
229      (but still depend on the tile decompostion of the domain).
230    o pkg/seaice: change a discretization detail to make the B-grid code
231      "more symmetric". This change is likely to remove all "ridges/leads" that
232      where quasi-aligned with the grid in B-grid solutions. It may also be
233      the solution to the stress coupling issues with the B-grid.
234    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
235      remove .cvsignore from input dir. (since testreport no longer run here).
236    o pkg/thsice:
237     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
238     - fix reshaping of sea-ice just after advection:
239       melt all the ice only if ice-volume is too small.
240     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
241       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
242     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
243    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
244      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
245    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
246      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
247      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
248      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
249      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
250      -> update output.txt
251    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
252     this affects truncation error: -> update output.txt of exp:
253      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
254      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
255    
256    checkpoint59f
257    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
258    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
259      a bounded range (in forward mode)
260    o pkg/ecco, ctrl, autodiff and mom_common:
261     internal parameter controls, completements of implementations
262    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
263    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
264      (not seem any difference in testing results).
265    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
266       at face corners.
267    o pkg/generic_advdiff:
268     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
269      loop range indices for computing vertical advection tendency
270      and do the calculation in the interior only (no overlap) ;
271      for now, only implemented for SOM advection (to save CPU time).
272     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
273    o exch2 adjoint
274      First set of changes:
275      - add exch2 hand-written adjoint templates
276      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
277        This will require cleanup in pkg/autodiff/*.F
278        (changed routines currently kept separate in verif. code/)
279      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
280        that used to hide exch2 or cubed-sphere specific code
281        (commented via 'cph-exch2')
282    o pkg/seaice
283      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
284    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
285       output of global_ocean.cs32x15.thsice .
286    
287    checkpoint59e
288    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
289      for B-grid vector (not yet tested) and C-grid vector (<- only used
290      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
291    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
292      (#ifdef ALLOW_SALT_PLUME)
293    o gather_2d/scatter_2d: removed halo regions
294    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
295      scheme and the corresponding test case (under front_relax dir). For now,
296      only available with Skew-flux form and not yet tested in realistic set-up.
297      adjoint: store directives updated, but gradient checks deteriorated,
298      so maybe GM/Redi adjoint is now broken.
299    o seaice adjoint
300      * add AREA, HEFF, HSNOW as control variable
301        (should not change lab_sea results)
302      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
303    o pkg/seaice:
304      * added computation of saltFlux in seaice_growth;
305        For time being, sea ice salinity is assumed constant
306        contribution of snow flooding to freshening of sea ice is neglected.
307        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
308        defaults to 0.0 in order to maintain backward compatibility.
309        Typical values for SEAICE_salinity are 4 to 10 g/kg.
310      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
311      * added SEAICE_availHeatFrac, which specifies fraction of surface level
312        heat content used to melt or grow ice
313      * commented out cap of HICE: it helps keep ice thinner
314      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
315      * applied OBCS T/S mask to HEFFM sea ice mask
316    
317    checkpoint59d
318    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
319     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
320     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
321    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
322     and change default value of parameter "GM_Small_Number";
323     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
324       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
325       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
326    o pkg/ecco: cost function when applying pkg/smooth to controls
327    o pkg/ctrl: add forcingPrecond run time parameter
328    o pkg/seaice:
329     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
330     - fix bug in metric terms of u-equation in LSR solver (implicit part),
331       changes verification/lab_sea
332     - rearrange implicit part of u-equation in LSR solver to make it easier to
333       read, understand, and debug. This causes changes at the truncation level.
334     - fix (serious) bug in the boundary conditions (sign error in the implicit
335       part) of the LSR solver. Changes all LSR results.
336     - fixed problem with HSNOW initialization to avoid thick snow when AREA
337       is initilized with small values - does not change lab_sea results.
338     - added HsnowFile initialization capability
339    o pkg/smooth: addition to model/src and pkg/ctrl so allow
340     initialization of pkg/smooth and application to control vector
341    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
342    o dependencies: pkg/profiles requires pkg/cal
343    o pkg/profiles:
344     - added option ALLOW_PROFILES_GENERICGRID
345         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
346         that interpolation information (grid points and coefficients) is provided
347         within the netcdf input files.
348         -> sample matlab scripts can be found in MITgcm_contrib/gael
349         that allow you to prepare netcdf input files.
350     - also modified: cleaner include statements, cleaner error print statements,
351       cleaner stops when error, and more tests of the netcdf input files consistency.
352    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
353    o pkg/seaice:
354     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
355       requires a new routine: seaice_diagnostics_fill.F
356     - make sure that seaice does not move if not forced (pressure replacement
357       method, Hibler and Ip, 1995), changes results
358     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
359     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
360       It is turned off by default (=-1.), because it changes the results.
361     - make it possible to read AREA from a file, too.
362    
363    checkpoint59c
364    o add S/R and diagnostics for oceanic mixed-layer depth
365    o move GMRedi call after all vertical mixing schemes (including KPP)
366    o pkg/thsice:
367     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
368      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
369    o pkg/obcs:
370     - bug fix for balance code
371    o pkg/seaice:
372      - allow values of SEAICE_elasticParm > 1
373      - add new parameter SEAICE_evpTauRelax as an alternative
374        to SEAICE_elasticParm
375      - make lsr boundary conditions free slip (by default), changes result
376      - add code for no slip boundary conditions for lsr
377      - set minimum of zeta to zero (and not 4e8) (changes results)
378      - add a cap on AREA after advecting AREA if seaice_growth is not called
379    o change calculation of Visbeck K:
380      - no longer depend on tapering scheme; instead, compute slope (limited
381        by GM_maxSlope). this is equivalent to what was comuted before with
382        clipping or linear tappering.
383      - fix vertical averaging (wrong by 1/2 level)
384      - leave the old version (but will not be maintained) within
385        #ifdef OLD_VISBECK_CALC / #endif
386      - update output of exp. ideal_2D_oce
387    o change error catch in calc_r_star to improve vectorization
388    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
389      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
390    o adjoint:
391      Re-organized adjoint checkpointing according to Matt Mazloff
392      (but with modifs/completions/cleanups)
393      Storing is now bundled into large arrays to optimized I/O
394      (and second step in cleanup of the_main_loop)
395    
396    checkpoint59b
397    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
398      - export/import (between ocean & coupler) fields needed for ocean DIC.
399    o pkg/seaice:
400      - get rid of three more exchanges seaice_calc_viscosities (required
401        different loop boundaries in seaice_lsr and seaice_ocean_stress)
402      - bug fix in seaice_ocean_stress (update of lab_sea required)
403      - reduce loop boundaries to necessary minimum also in seaice_evp
404      - go back to the old way of computing deltaC/Z as the adjoint likes that
405        better
406    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
407      passive tracer to an Age Tracer) + update output.txt
408    o pkg/exf:
409      - implement A-grid / C-grid selection for wind-stress input files.
410      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
411      for now, in exf_bulk_largeyeager04.F only :
412      - change implementation for case where windspeed + 2. components wind-stress
413        are read-in. AND use rhoConstFresh to convert evap.
414    o pkg/seaice:
415      - use correct EXCH_UV for wind-forcing (on A-grid).
416      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
417        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
418    o pkg/exf:
419      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
420      EXF_INTERPOLATION:
421      - merge global_with_exf/code version of exf_interp_read.F
422        to the main code ;
423      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
424        reading the file ; Important: This options needs to be defined to recover
425        previous code.
426        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
427      - no longer loose real*8 precision along the way when using exf_iprec=64.
428    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
429      - change discretisation of evp-solver in order to avoid another exchange
430        (changes lab_sea) and clean up a little
431      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
432        help the adjoint (this also changes the results slightly)
433      - add a few "_d 0" where they had been missing in seaice_evp.F
434      - cleaning up: remove unused seaice_calc_rhs.F
435    o pkg/exf: some cleaning-up:
436      - change various "constants" into runtime parameters
437      - cleaned-up Large&Yeager04 routine which should eventually
438        replace exf_bulkformulae.F (changed names of S/R and CPP)
439        and merged various ALLOW_ATM_WIND options
440     only used with thsice pkg (in thsice_get_exf.F):
441      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
442        which are used when useStabilityFct_overIce=TRUE (= the default)
443      - change default values of ice & snow emissivity and scale downward LW
444        by ice & snow emissivity.
445    o pkg/thsice:
446     fix few little problems, in thsice_calc_thickn.F:
447      - growth vertically (and not laterally) if iceFrac == iceMaskMax
448      - melt only laterally if hIce < hThinIce (as the comments say)
449      and in thsice_extend.F:
450      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
451      - start to form ice as soon as the minimum ice-volume is reachable.
452     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
453      and cpl_aim+ocn
454    o pkg/kpp
455     - move computation of surface related input fields to KPP into a new
456       subroutine kpp_forcing_surf.F
457     - remove wrong (within bi,bj loops) EXCH calls.
458     - little cleaning (add argument myThid in last position, cvs header ...)
459     - for now, fix conservation problem by exchanging KPPviscAz (may not
460       be the best fix)
461    o pkg/seaice
462     - check for inconsistent evp parameter/cpp-flag combination
463     - remove leftover errIO flat for obsolete name list error handling
464    o OpenAD
465     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
466    
467    checkpoint59a
468    o pkg/seaice: some parameter clarifications and a little bit of clean up
469    o pkg/thsice: rename run-time parameters:
470       himin       -> hIceMin
471       himin0      -> hThinIce
472       hihig       -> hThickIce
473       i0          -> i0swFrac
474       transCoef   -> bMeltCoef
475       frac_energy -> fracMelting
476      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
477       with default values (for now) that do not change the results.
478      remove old version of thsice vars advection in pkg/seaice.
479    o in FFIELDS.h:
480      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
481      - make pLoad & sIceLoad always available (but still only used if
482         ATMOSPHERIC_LOADING is #define).
483    o pkg/kpp: replaced _KPP_RL with _RL
484    o bug fixes for vertical diffusivity computations when both KPP and
485        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
486        are no longer updating the vertical diffusivity array
487        (passed as argument) but are (re-) setting those arrays.
488    o pkg/seaice: fix bug in evp solver, while doing that
489      - change (improve?) discretization of stress computations for both
490        cgrid-lsr and evp solver
491      - add a new routine to compute strain rates
492      - the above changes lab_sea results
493      - add no slip conditions for evp solver (off by default), lsr-version
494        may follow
495      - fix exchange for shear at Z-points (does not change lab_sea)
496      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
497        (to force the user to pick a time step since there is not "safe" way
498        of choosing it)
499      - add principal stress diagnostics
500      - rearrange fields for evp a little to avoid having to call a: too many
501        exchanges and b: exchanges for stress trensor components which we do
502        not have.
503      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
504        of evp, complete rewrite for lsr case (latter is does not yet work
505        in all cases)
506    o pkg/kpp: add code to have mixing in shelf ice caverns
507      - add myThid to all kpp routines (long overdue)
508    
509    checkpoint59
510    o pkg/exf:
511      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
512        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
513      - move exf header files from lower_case.h to UPPER_CASE.h ;
514        add missing cvs Header & Name
515      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
516      - add namelist param. selectStressGridPosition, exf_monFreq
517      - retire many _CLIM routines, and remove data.exf_clim
518        + params moved to data.exf
519        + climsst, climsss now handled by exf_set_gen, i.e.
520          climss?period=0 refers to constant field,
521          climss?period=-12 to monthly forcing
522      - split up namelists in data.exf
523    o pkg/seaice:
524      - remove seaice_exch and seaice_exch_uv
525      - remove superfluous exchange of theta
526      - add myThid to seaice_budget_ocean/ice
527      - add new interface for atmospheric wind forcing (C-grid only)
528        + new routine
529        + two new field (taux, tauy for stress over ice)
530        + removed one global field (DAIRN) for C-grid case only
531    o pkg/thsise
532      - 2nd set of modifs for thsice adjoint in conjunction with exf
533    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
534    
535    checkpoint58y_post
536    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
537      vertical diffusivity, similar to that in MOM4; turned on using
538      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
539      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
540    o Added capability for 3D specification of background vertical diffusion
541      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
542      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
543      "data" file that contains the 3D vertical diffusivity coefficients.
544    o ice dynamics (pkg/seaice) with thsice thermodynamics:
545      - add code within pkg thsice to advect & diffuse sea-ice fields
546      similar to (and will replace) what has been added in  seaice_advdiff.F,
547      but: - conserving Mass, Heat & Salt.
548           - better when using non-linear advection scheme (not yet fully tested)
549           - can also be used in atmospheric set-up (for now, only the diffusion).
550    
551    checkpoint58x_post
552    o IO option for global-file compact format:
553      - add options when generating topology (utils/exch2/matlab-topology-generator)
554      - add I/O capability (pkg/mdsio).
555      - adapt utils/matlab/rdmds.m to read this format.
556      for now long-line format not yet supported by pkg/mdsio (& exch2).
557    o shelfice: add a few diagnostics
558    
559    checkpoint58w_post
560    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
561      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
562      (and replace horiVertRatio in NH code).
563      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
564                         and tutorial_plume_on_slope (sensitive to truncation)
565    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
566      directly to drive seaice model (C-grid only)
567    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
568     - reintroduce computation of wind from stress,
569     - compute tau (in exf_bulkformulae.F) from windstress averaged to
570       mass points to avoid tau = 0
571     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
572    o rdmnc.m: make it work with "global" files created with gluemnc
573    o rdmnc.m : some improvements in dealing with singleton dimension
574      (tested on all testreport mnc output files).
575    o genmake2: disable pkg/profiles if netcdf test fails.
576    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
577    o move call to cal_readparms up to make calendar parameters/variable available
578      to all packages
579    
580    checkpoint58v_post
581    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
582      useDynP_inEos_Zc tested.
583    o pkg/exf: changes to properly interpolate/mask/scale initial fields
584    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
585      and portions thereof.  See read_cs.txt for description and examples.
586    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
587      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
588      following the great-circle arc between those 2 points.
589    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
590      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
591    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
592     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
593     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
594     - still needs work (not working with some options ; efficiency to improve)
595       and serious testing.
596     - use this scheme for temperature & salinity in 2 advection test exp.:
597       advect_xy & advect_xz, respectively.
598    
599    checkpoint58u_post
600    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
601    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
602    o testreport: add option "-skipdir" to skip some test.
603    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
604      momentum calculation.
605    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
606    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
607      remove checkpoint.F and the_correction_step.F (no longer used);
608      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
609    o add option (linFSConserveTr) to correct for tracer source/sink due to
610      Linear Free surface
611    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
612    o pkg/thsice: fix reading mnc-pickups
613    
614    checkpoint58t_post
615    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
616    o pkg/mdsio:
617     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
618       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
619       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
620     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
621     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
622       either MDS_READ_FIELD or MDS_WRITE_FIELD )
623     - new S/R (to replace MDSWRITEMETA), which allows to write more
624       informations (variable names, time ...) to meta files.
625     - modify rdmds.m to give back the meta file content.
626    o pkg/diagnostics: change vertical interpolation to be safer, and more
627       flexible (define p-levels to interpolate to in data.diagnostics);
628      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
629       diagnostic pointer.
630    o pkg/seaice: more cleaning up of seaice_growth, added many comments
631    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
632    o fix multi-category seaice:
633     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
634       SEAICE_MULTICATEGORY
635     - fix short wave heat flux
636    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
637       and allow to use EVP solver. Change forward lab_sea: test both EVP
638       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
639    o Initial check-in of lab_sea adjoint
640      (very similar to natl_box_adjoint/code_seaice)
641      * used C-grid and EVP solver
642      * used KPP, GM/Redi
643      * uses inAdExact=.TRUE.
644      * gradient checks fail for both ADM and TLM
645        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
646        f.d. gradients actually seem more problematic than ADM, TLM gradients;
647        issue is related to forward mismatch between g77 an ifort
648    o pkg/seaice: overhaul of thermodynamics
649     - growth.F and groatb.F are replaced by new routine seaice_growth.F
650     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
651     - move a few global fields out of SEAICE.h into seaice_growth.F and
652       make them 2D (FICE/QNETO/ ...)
653     - remove FO (it is the same as QNETO)
654     - introduce a few local fields to avoid modifying external fields such
655       as atemp, etc.
656    
657    checkpoint58s_post
658    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
659      changed exf_set_gen.F so that
660        genperiod=0 means input file is one time-constant field and
661        genperiod=-12 means input file contains 12 monthly means
662    o CG2D: use pre-computed solver main-diagonal (stored in common block);
663      this affects truncation error ; generate new output file for exp. which
664      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
665        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
666        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
667        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
668        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
669        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
670    o start implementation of deep-atmosphere and anelastic formulation
671    o verification: remove 2nd copy of input files and use script "prepare_run"
672      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
673    o mom_common/vecinv/fluxform: fix a few initialisation isssues
674    o profiles: fix for multithreaded case
675    
676    o diagnostics: rename few diags:
677      s/'PRESSURE'/'RCENTER '/g
678      s/'TICE    '/'oceFreez'/g
679      s/'TAUX    '/'oceTAUX '/g
680      s/'TAUY    '/'oceTAUY '/g
681      s/'SWFLUX  '/'oceQsw  '/g
682      s/DIFx/DFxE/g
683      s/DIFy/DFyE/g
684      and add few ocean-forcing diagnostics:
685      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
686    o modifications to pkg/seaice/growth.F and budget.F, which change results of
687      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
688      as actual snow thickness.  It now refers everywhere to effective snow
689      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
690    
691    checkpoint58r_post
692    o modifications to pkg/seaice/growth.F, which change results of
693      lab_sea experiment: fixes pertain to melting snow over open water, to
694      masking EVAP under sea ice, and to using the correct AREA variable for
695      computations of EVAP, PRECIP, HSNOW, and GHEFF
696    o add ability to read bathy, salt, and theta using MNC (off by def)
697    o add flooding algorithm and advection of HSNOW for pkg/seaice;
698      both are turned off by default and do no change any results
699    o seaice advection with pkg/thsice: a step toward the use of non-linear
700      advection scheme, but #ifdef or commented out for now (requires more EXCH).
701    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
702      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
703      in natl_box (affects results @ truncation level: update output.txt)
704    o multi-threading and IO:
705      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
706      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
707        (needed to work with SingleCpuIO): tested in all verif. exp.
708    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
709      affects the results (but none of the verification test uses this scheme).
710    o Adding some pkg/diagnostics capability to pkg/seaice
711      (will certainly be subject to changes)
712    o ctrl: adding new control variables:
713      lwflux, lwdown, evap, snowprecip, apressure, runoff
714    
715    checkpoint58q_post
716    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
717      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
718      high_res_cube configuration by 4% on Columbia.
719    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
720      add (in global_with_exf/code) a version of EXF_INTERP_READ without
721      dynamical allocation (seems to work in multi-threaded).
722    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
723      single CPU io) so that TAF does not have to see EESUPPORT.h
724    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
725    
726    checkpoint58p_post
727    o obcs: stop if obcs is used with useCDscheme = .true.
728    o shelfice:
729     - fix a sign error so that no slip at shelfice interface works
730     - remove stop for combination non-hydrostatic code and shelfice. That does
731       not mean, that the results are correct, but at least they are numerically
732       stable
733    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
734    o added adjoint exch routined for all exch*3d* routines
735      and updated flow directives
736    
737    checkpoint58o_post
738    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
739      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
740    o change controling S/R for writing pickup file (new S/R do_write_pickup)
741      and clean-up reading/writing of pickup files.
742    o fix local version of read/write pickup (NH part) in rotating_tank/code
743    o simplify EXCH interface:
744     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
745     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
746    o added the regrid package
747    o shelfice:
748     - add a simple boundary layer scheme to reduce noise
749     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
750    
751    checkpoint58n_post
752    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
753       local variable (not in common block).
754    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
755      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
756      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
757        to work with SingleCpuIO.
758    o add "_d 0" to real constant of pkg/cfc subroutines ;
759       update exp. cfc_exemple & tutorial_cfc_offline output files.
760    o multi-threading and IO:
761      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
762        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
763      - barrier before and after reading.
764      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
765      - avoid using MDS_WRITELOCAL for LAND pkg output.
766      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
767        common-block variables ; Allows multi-threading with master-thread IO.
768    o change default MAX_NO_THREADS from 32 to 4 ;
769      and stop cleanly when MAX_NO_THREADS is too small.
770    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
771    
772    checkpoint58m_post
773    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
774       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
775    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
776       keep global_ocean.90x40x15 (for AD testing) with former secondary test
777       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
778    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
779        add MITgcm_tutorials (= code + all the tutorials)
780    o ecco, option to compute cost for total ssh (mean+anom)
781    o consistent with addition of ptracer and ssh in pkg/profiles
782    o profiles: adding ptracer and ssh
783    o testreport: change multi-test output-file name
784      (from output.txt.{name} to output.{name}.txt)
785    o profiles: now ok for mutli-tiles case
786    o seaice: add 4 parameters for different advection schemes for area,
787      (effective) seaice thickness, enthalphy, and snow height. Their default
788      is the standard parameter SEAICEadvScheme
789    o calc_gw:
790     - add cosFacU in zonal viscous flux (harmonic.visc.).
791     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
792       of tutorial_plume_on_slope.
793    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
794    o calc_gw: true flux-form, account for horizontal grid spacing.
795      update rotating_tank results, but not plume_on_slope (affected at
796      truncation level, 11 digits).
797    
798    checkpoint58l_post
799    o calc_gw:
800     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
801     - remove side-drag for now (need to fix it); update plume_on_slope results.
802     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
803    o commit code to make SST/SSS weights spatially variable
804      (based on either variable in-situ or variable initial T/S weights)
805    o pkg/ecco:
806      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
807        now based on horizontally varying weights wthetaLev, wsaltLev
808      * cost_averagesflags now returns year indices in addition to day, month
809      * sflux balance is performed on annual basis
810        (sflxumm, sfluxmm2, bal_sfluxmm)
811      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
812        including separate counting and multipliers
813    o pkg/rbcs
814      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
815    
816    checkpoint58k_post
817    o testreport:
818     - always build in dir. "build" (if not there, mkdir build instead of building
819       & running in input)
820     - run in dir run (if it exists), in build otherwise.
821     - call prepare_run (if input/prepare_run exists)
822     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
823    o pkg/exf modifications to interpolation and rotation routines for more
824       reasonable treatment of North Pole singularity: for tracers North Pole
825       value is set to northernmost zonal-mean value, for zonal velocity it is
826       set to zero, and for meridional velocity it is set to northernmost value.
827    o pkg/exf/exf_check_range.F
828     - add tile index to diagnostics and move stop statement to the very
829       end of the routine.
830    o pkg/diagnostics: (diagnostics_main_init.F)
831      define title of isomorphic variables according to the current config.
832    o pkg/thsice with pkg/seaice dynamics:
833    - fix domain of computation (interior only, required for exf) and do exchanges
834    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
835    o towards a standard way of dealing with multi-threading in MONITOR
836      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
837    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
838       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
839    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
840    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
841    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
842       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
843    o tracer advection:
844     - clean-up and simplify calc_common_factors.F
845     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
846       advection subroutine (but still not used within DST advection S/R)
847    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
848    
849    checkpoint58j_post
850    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
851      from file (collects calls previously in FORWARD_STEP)
852    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
853    o adjoint store dir. adjusted accordingly
854    o genmake2
855      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
856    
857    checkpoint58i_post
858    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
859      on wind stress (SEAICEstressFactor defaults to 1.)
860    o Total number of Timers is finite (<=40): comment out 2 non-essential one
861      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
862    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
863      on CS-grid: no longer loosing mass.
864    o exf & curvilinear-grid: no longer modify longitude xC & xG.
865    o pkg/ggl90: fix sloppy output and fix a bug
866    o pkg/seaice: added SEAICEuseEVPpickup parameter
867      - Set to false in order to start EVP solver with
868        non-EVP pickup files when using SEAICEuseEVP
869      - fix sign error in diffusion in seaice_calc_rhs
870    
871    checkpoint58h_post
872    * Modifications for bottom topography control
873      o replace hFacC by _hFacC at various places
874      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
875      o add non-self-adjoint cg2d_nsa
876      o update autodiff support routines
877      o re-initialise hfac after ctrl_depth_ini
878      o works for 5x5 box, doesnt work for global_ocean.90x40x15
879    * Adding verification for 5x5 box (4-layer) bottom topography control
880    
881    checkpoint58g_post
882    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
883       used for mean seasonal cycle, mean diurnal cycle); add an example
884       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
885    o pkg/ggl90:
886      - add parameter (minimum surface kinetic energy)
887      - fix bug (avoiding division by zero)
888    o couple pkg/thsice to pkg/seaice:
889      - modify advection in seaice to accomodate new scalar fields to be advected
890      - only muliDimAdection scheme work with seaice/thsice
891      - mapping of thsice-variables to seaice-variables, back and forth
892      - does not break the verification experiments, but does not give the
893        desired results either
894    o pkg/seaice
895      - make (default) second order advection a bit less confusing?
896    
897    checkpoint58f_post
898    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
899      to pkg/seaice):
900      - new routines thsice_map_exf and thsice_get_exf provide the interface
901      - add an additional formal parameter to thsice_solve4temp
902    o pkg/exf:
903      - add new fields wspeed, snowprecip (to be able to couple to thsice)
904      - correct Stefan-Boltzmann constant
905      - new parameter for longwave surface emittance
906      - separate some stuff from exf_bulkformulae into new routines  
907        exf_radiation, exf_wind
908      - add new parameters and constants: longwave emissivity for ocean, ice
909        and snow, evaporation parameters over ice
910      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
911        either wind from stress or stress from wind
912    o pkg/thSIce:
913    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
914    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
915       and THSICE_CALC_THICKN
916    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
917    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
918      to make debugging easier.
919    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
920    o pkg/bulk_force:
921      - clean-up comments and parameters ;
922      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
923    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
924      generate new output for test-experiment: aim.5l_cs.thSI
925    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
926      testreport accordingly
927    
928    checkpoint58e_post
929    o SEAICE_CGRID adjoint done
930    o R_STAR adjoint implemented.
931      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
932      * need to sort out init. of h0facc, etc.
933    o Make pkg/profile fully independent of ecco,cost, etc. stuff
934      to be able to use it in pure forward.
935    
936    checkpoint58d_post
937    o upgrade simple test-experiment to tutorial example:
938     step.1: duplicate the experiment and (step.2) will remove the old copy.
939      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
940      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
941      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
942      tutorial_global_oce_biogeo    <- copy of dic_example
943      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
944      tutorial_plume_on_slope       <- copy of plume_on_slope
945      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
946      tutorial_global_oce_optim     <- empty for now (David ?)
947      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
948     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
949    o correct a sign problem in cost_scat.F
950    o obcs and ptracers: fix boundary conditions for advections schemes
951      with larger stencil
952    o thsice adjoint: start
953    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
954      completeness
955    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
956      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
957    o ptracers adjoint:
958      * avoid extensive recomputatations
959      * fix missing re-init. of gptr (missed by TAF)
960    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
961      me to turn off the excessive output to STDOUT that this package produces
962    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
963      and add those terms in Vector-Invariant formulation.
964    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
965      if the control period (xx_hfluxperiod etc) is 0
966    o in profiles pkg, clean routines and fix details
967    o in ecco pkg, reading ssh data:
968      fix problem in case the model does not start at iter0=0
969    o fix mnc-pickup/restart for ptracers
970    o new package prifiles:
971      code to compute profile-based cost by Gael Forget
972      (modifs in ecco, ctrl, autodiff)
973    o Benign bug fix in initialization (spotted by M. Mazloff) of
974      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
975    
976    checkpoint58c_post
977    o adjoint: finish NLFS adjoint and provide reference output in
978      verification/global_ocean.90x40x15/results_ad_nlfs
979    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
980      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
981      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
982      with SEAICE_CGRID defined.
983    o move calendarDumps from "data" to "data.cal" and clean-up the code
984      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
985    o add useEXF & useCAL flags (for now, set in hard-coded way)
986    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
987      (were missing in NH mode, and wrong in quasihydrostatic mode).
988      waiting for Chris updated version of calc_gw to add those CALLs.
989    o fix bug in quasihydrostatic S/R ;
990      add a test for this option: global_ocean.90x40x15.qshyd
991    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
992      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
993    o add on/off flag useOffLine for package OFFLINE
994    o seaice:
995      - modify advection so that it works also on the C-grid
996      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
997        problem in multi-tile runs with C-grid
998      - add flags for clipping ice velocities and/or masking solver forcing
999      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1000        C-grid solver
1001      - added a few comments to seaice_diffusion.F
1002      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1003        are now exclusive)
1004      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1005        required re-ordering the code a little:
1006       + make DAIRN global variable (defined in SEAICE)
1007       + move computation of the viscosities eta and zeta into a new separate
1008         routine (because I need to recompute them in seaice_ocean_stress.F)
1009    
1010    checkpoint58b_post
1011    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1012      update output.txt of exp. aim.5l_cs.thSI
1013    o various mnc cleanups and improvements:
1014      + shrink lookup tables by factor of ~4
1015      + better error reporting when running out of lookup space
1016      + able to handle longer path/file names (up to 500 chars)
1017    o adjoint:
1018      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1019      - TBD: "hidden" mom_vecinv recomp. in dynamics
1020    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1021     (allow to differentiate between forcing components using new integer flags:
1022      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1023     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1024    o ecco
1025      - enable trend removal from SSH anomaly obs.
1026    o adjoint
1027      - a fix for PmEpR when #undef EXACT_CONSERV
1028      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1029      - try to fix "hidden" recomp. in forward_step for NLFS
1030        (NLFS seems broken sometimes after I checked it in)
1031    o seaice:
1032     - add c-grid version of the dynamic solver:
1033       + three new routines that are the c-grid substitute lsr, dynsolver
1034         and ostres
1035       + put a few fields that were local to dynsolver into global common
1036         blocks, so that I can move the computation of stresses etc into
1037         seaice_lsr (saves coding but may break the adjoint).
1038     - replace more hardwired parameters by runtime parameters
1039     - add ice masks that mask the rhs of the implicit solvers where there
1040       is no ice (commented out in seaice_dynsolver, because i am not sure
1041       if this works properly), eventually this should replace the clipping
1042       of ice velocities in seaice_dynsolver to +/-40cm/s.
1043    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1044      include it only where its needed
1045    o move balancing of fluxes before the call of external_forcing_surf
1046    o seaice:
1047      - correct units of turning angles (now they are really in degrees)
1048      - move computation of GWATX/Y out of main routine into dynsolver
1049      - initialize GWATX/Y in seaice_init
1050    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1051      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1052    o seaice: add runtime flags for turning angles (default to zero)
1053    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1054      and trend from exf forcing and ctrl control adjustments
1055    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1056      (since checkpoint57x_post)
1057    o change the default rotation period to 86164.s = the Earth rotation
1058    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1059      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1060    o seaice advection: add code for choosing between the default (2nd order
1061      central differences) and multiDim advection schemes provided by
1062      pkg/generic_advdiff
1063    o seaice:
1064      - removed all references to SEAICE_GRID.h fields from
1065        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1066        (cubed-sphere configuration will change a little)
1067      - grid computations in seaice_init are obsolete now.
1068      - cleaned up code a little so that is easier to read (hopefully).
1069      - added new (better?) discretizations of default advection and diffusion
1070        (turn on with SEAICEuseFluxForm)
1071      - replace 1 in 3d global fields by kSurface in growth.F
1072      
1073    checkpoint58a_post
1074    o seaice:
1075      - bug fix in advect.F
1076    o shelfice:
1077      - separate shelfice load anomaly from pload (breaks with time
1078        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1079        Its default is 0., but it may be computed more cleverly from (unknown)
1080        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1081        done offline. A good approximation of the pressure load anomaly is
1082        necessary to avoid large initial adjustment processes underneath
1083        deep-reaching shelfice.
1084      - small fix in ISOMIP shelfice_thermodynamics
1085      - add more sophisticated thermodynamics of Hellmer (1989), this is
1086        now the default
1087      - give a few constants more intuitive names
1088    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1089      if bulk formulae are used in long integration (especially EmPmR). Turn
1090      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1091      if balancePrintMean, the imbalance that is substracted is printed to
1092      STDOUT.
1093    o fix bug (typo) in obcs_apply_eta.F
1094    o add a new package shelfice which enables us to model the circulation
1095      underneath shelf-ice with draughts of hundreds of meters.
1096     - works
1097     - to do: + include improved thermodynamics
1098              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1099                instead of new field kTopC
1100              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1101                instead of new field R_shelfIce and new code in ini_depth.F
1102                and ini_mask_etc.F?
1103              + adjust vertical mixing schemes?
1104    o seaice pkg:
1105     - add a cpp-flag to include a simple formula for a salinity dependent
1106       freezing point of sea water at the surface
1107     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1108       meridional stresses are now different (and hopefully correct)
1109    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1110       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1111       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1112    o pkg/diagnostics: add options and parameters for regional-statistics
1113       diagnostics ; define regions by reading a region-mask from a file
1114       (might add other options later)
1115    o pkg/bulk_force:
1116     - add option and parameters to use AIM surface-flux formulae.
1117     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1118       others forcing fields (defined in PARM05, parameter file "data") are loaded
1119       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1120     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1121     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1122     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1123       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1124     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1125    
1126    checkpoint58
1127    o add "--embed-source" option to genmake2 which, when the supporting
1128      tools can be compiled (as determined by genmake2) will turn on the
1129      embed_files package which then embeds the entire MITgcm source code
1130      (*.[fFhc] + Makefile) used for the build within the executable
1131      - requested by CNH but off by default
1132      - adds a paltry <9MB to the mitgcmuv executable in most cases
1133      - only writes the output when useEMBEDSRC in eedata is true
1134    o clean up 3-dim. relaxation codes:
1135      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1136      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1137      * Thanks to Tom Haine for testing!
1138    
1139    checkpoint57z_post
1140    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1141      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1142    o fix the pickup behavior for obcs in combination with ptracers
1143    o fix a bug in ptracers_external_fields_load
1144    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1145      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1146    o transfered surface NH pressure to eta field (if exactConserv).
1147    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1148         and update lab_sea output.txt file.
1149    o completing 3-dim. relaxation code: additional term
1150         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1151      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1152      * At compile time, in "EXF_OPTIONS.h" set
1153          #define  ALLOW_CLIMTEMP_RELAXATION
1154          #define  ALLOW_CLIMSALT_RELAXATION
1155      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1156          tauThetaClimRelax3Dim = 15552000.0,
1157          tauSaltClimRelax3Dim  = 15552000.0,
1158      * 3 cases:
1159          1) Use a constant-in-time 3-dim. field
1160          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1161          3) Real-time relax. to time-evolving prescribed field
1162    o Adding Laplacian-type smoothness constraint on
1163      initial and boundary (forcing) controls (ic, bc)
1164      * enable at compile-time via
1165        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1166      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1167      * Absolute scale somewhat unclear so far
1168      * no area weighting was included since no other cost term does so far
1169    
1170    checkpoint57y_post
1171    First step for a NLFS adjoint
1172    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1173    o new init. routines for calc_r_star, calc_surf_dr
1174    o still need to deal with ini_masks_etc
1175    o testreport seemed happy
1176    checkpoint57y_pre
1177    
1178    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1179    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1180    o add new offset feature to offline pkg (plus minor cleanup)
1181    o cfc fixes for final year of integration
1182    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1183      be in GCHEM_OPTIONS).
1184    
1185    checkpoint57x_post
1186    o fix testreport Pb in multiple test experiment.
1187    o cleanup our namelist syntax in verification:
1188      - make it more F95 standards compliant (some work still needed)
1189      - allows the vast majority of our tests to work with gfortran
1190    o Non-Hydrostatic:
1191     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1192     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1193    o Allow to apply AB on T,S rather than on AB(gT,gS):
1194     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1195     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1196       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1197     - need a "clever" read_pickup to restart from the other AB formulation
1198    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1199    o remove some unused variables (reduces number of compiler warnings)
1200    o adjoint
1201      * Disable useVariableViscosity for adjoint for time being
1202        (there are a number of extensive recomputations)
1203      * Initialize certain variables needed for adjoint
1204    
1205    checkpoint57w_post
1206    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1207                 fix the singleCpuIO RS version of MDSWRITEFIELD
1208       and add a WARNING if using globalFiles=T with multi-processors.
1209    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1210      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1211    o tracer advection scheme:
1212      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1213       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1214       was not very convenient).
1215      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1216       (further tests needed for the implicit DST & Flux-Limiter schemes).
1217    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1218      and sRef for convenience, handy, when you want to initialize
1219      ptracers in a large domain with a constant non-zero value. Also,
1220      untangle ptracers_init.F a little.
1221    
1222    checkpoint57v_post
1223    o change dome exp. to use variable viscosity in side-drag terms.
1224    o remove all the files from the cfc_offline test since they are now
1225      incorporated into tutorial_cfc_offline which has been producing
1226      identical results for a few days of testing
1227    o add new parameter: sideDragFactor to enable half-slip-side BC
1228      and change side-drag S/R to use viscosity from mom_calc_visc
1229      (can switch back by setting sideDragFactor=0.); affects results at
1230      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1231       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1232    o vorticity & strain are now computed without masking, to account for
1233      no-slip-side BC in variable viscosity calculation ; mask is applied
1234      anyway later on, before computing advection/coriolis terms.
1235    o modify exp4 to test new obcs support for reading from external files
1236      and for passive tracers
1237    o fix behavior of ptracers_monitor when monitor output is written to a
1238      netcdf-file; still not independent of monitor.F (writes in the same
1239      file).
1240    o change default value of tRef (put a uniform, meaningful value for ocean
1241      & atmos) and initialize sRef (was missing, as Martin mentioned).
1242    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1243      to be proportional to enstrophy dissipation length.  Thus,
1244       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1245      This is now consistent with Smagorinsky and with the manual.
1246    
1247    checkpoint57u_post
1248    o OBCS and PTRACERS: add open boundary support for passive tracers
1249      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1250        OB-values from file; this is not different from the way theta and salinity
1251        are treated
1252      - however, Orlanski-radiation conditions are not supported, and the model
1253        will stop if you use pTracers and Orlanski at the same time.
1254      - beefed up the rountine obcs_external_fields_load: now only those open
1255        boundary values are overwritten with values from files for which there
1256        are really files, otherwise the OB-fields remain untouched. This makes
1257        it possible to use different OBs at different ends of the domain (as
1258        with EXF)
1259    o reduce number of exch calls in shap_filt (s2).
1260    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1261      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1262    
1263    checkpoint57t_post
1264    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1265    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1266      same truncation, independent of the face number: affects affects several
1267      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1268    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1269      note that biharmonic viscosity + no-slip was not tested in any experiment.
1270    o fix bug in non-linear free-surf side-drag ; generate new output for
1271      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1272    o make mnc honor the writeBinaryPrec flag for most kinds of output
1273    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1274    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1275      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1276    o add brackets in multi-terms sum to get same truncation, independent of
1277      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1278      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1279    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1280      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1281      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1282      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1283      Suggested values of viscosity parameters found in mom_calc_visc.
1284      Many new viscosity diagnostics available.
1285    
1286    checkpoint57s_post
1287    o Add clearing-house for viscosity calculations, mom_calc_visc and
1288      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1289      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1290      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1291      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1292      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1293      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1294      ViscAhStrain and viscAhTension are now retired.
1295    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1296    o In response to JMC's bug report, genmake2 now ignores any soft-links
1297      that it finds in the *current* directory when searching for files.
1298      Soft-links found in any other source directories will still work as
1299      they did before.
1300    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1301      a C routine to unlimit the stack size
1302    o mnc-ify pkg/aim snapshot vars
1303    o mnc-ify pkg/land as requested by Daniel
1304    o various changes to mnc including:
1305      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1306      - output can now be grouped so that all files within a group
1307          change the ITER portion of their names in lock-step together
1308      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1309          and works with both EXCH1 and EXCH2 (but needs more testing)
1310      - writing works for all verification test cases w/ g77 on Linux
1311    
1312    checkpoint57r_post
1313    o make MNC variable initialization happen earlier
1314    o add diagnostics for (almost) each term of the momentum Eq.
1315    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1316    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1317    o remove MINIMAL_TAVE_OUTPUT option ;
1318      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1319    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1320      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1321    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1322    o add time-dependent SST, SSS control
1323    o cost terms in ecco/ modularized (new cost_generic.F)
1324    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1325    o new infrastructure for seaice model vs. obs misfits in seaice/
1326      * driver from the_main_loop.F is seaice_cost_driver.F
1327      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1328      * gradient check in Exp. 6a of natl_box_adjoint/
1329    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1330      (see README file)
1331    
1332    checkpoint57q_post
1333    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1334    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1335      - bug was reported by Jean-Michel and Ian Fenty
1336    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1337      update exp. cpl_aim+ocn output.
1338    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1339      Needed for high-res. runs with large global files
1340      to be able to limit tapelev size
1341    o Changed some tests for adjoint:
1342      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1343      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1344      * global_ocean.90x40x15/ back to default 3-level checkpointing
1345    o Modifications to enable scripted COMMON to MODULE conversion
1346      * verification/OpenAD/code/ has necessary scripts and description;
1347      * converts, compiles and runs successfully;
1348    
1349    checkpoint57p_post
1350    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1351    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1352      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1353    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1354    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1355      (was already the case for dissipation with mom_vecinv,
1356       and also the case for grad.PhiHyd when staggered-timeStep)
1357      This will allow to put dissipation out-off the AB time-stepping.
1358     Unfortunately, affects truncation error. Update output of exp. that "fails"
1359      (cg2d matching number) and leave the others for later: front_relax(10),
1360      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1361      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1362    
1363    checkpoint57o_post
1364    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1365      (2) its ready to be documented during the 20050801 DocFest
1366    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1367      for ideal_2D_oce and lab_sea on linux_ia32_g77
1368    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1369      in global1x1_tot/code_seaice_adj to access indices 32, 33
1370      (worth another tag)
1371    
1372    checkpoint57n_post
1373    o adding precip control xx_precip 32
1374    o adding swflux control xx_swflux 33
1375    o Replacing 10 forcing penalty cost routines by 1 generic.
1376    o Implementing partitioning in time-mean and variable adjustment
1377      for atmos. state.
1378    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1379    o in natl_box_adjoint:
1380      * updated exp 1 to 10
1381        (but does not have time-mean vs. variable split results yet)
1382    o updated global1x1/*_seaice_adj/
1383      to incorporate latest changes
1384    o enable useSingleCpuIO for mdsio vector routines
1385      (applies in particular to tapelev I/O)
1386    o removed inefficient K-loop in all active_file*control*.F
1387    
1388    checkpoint57m_post
1389    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1390      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1391    o pkg/exch2: filling of face-corner halo regions is optional
1392      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1393    
1394    checkpoint57l_post
1395     tag before updating tutorials (pre-release-2)
1396    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1397       for output and interpolation of input fields onto model grid)
1398    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1399       Affects results of exp. rotating_tank ; update output.txt.
1400    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1401          and taking the square quantity and/or using a fraction-weight field.
1402    o fix aim_diagnostics_init.F mate numbers.
1403    o add mnc output capability to diagnostics/diagstat and update
1404      our cvsignore files for the ACSII output generated
1405    
1406    checkpoint57k_post
1407    o lab_sea now uses diagnostics package and provides a suite of
1408      new EXF diagnostics output.
1409    
1410    checkpoint57j_post
1411    o exf
1412      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1413        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1414        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1415      * extended diagnostics output
1416        - now includes all EXF variables
1417        - hs, hl moved to common block
1418        - separate S/R for diagnostics, called after ctrl vector is added
1419        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1420        - EXFqnet contains true Qnet (i.e. includes qsw)
1421      * updated verif. lab_sea, global_with_exf
1422      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1423        to ensure that diagnostics sees a true EXFqnet
1424    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1425    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1426      several times with different frequencies.
1427    o mnc-ify the thsice package as requested by Daniel Enderton
1428      - the monitor--MNC output needs work
1429      - many attributes need to be added (most are currently blank)
1430    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1431      - many attributes need to be added (most are currently blank)
1432    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1433    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1434    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1435      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1436         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1437    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1438     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1439    
1440    checkpoint57i_post
1441    o Diagnostics package was changed: diagnostic allocation is now deactivated
1442      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1443    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1444      add 1rst Order upwind vertical Shear.
1445    o add a quick fix for A/B checkpointing in OFFLINE mode
1446    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1447      end-run around the C/Fortran linking horror in eesup/src/timers.F
1448    o added pkg/runclock: allows user to terminate run based on wall clock
1449    o added non-hydrostatic scaling parameter: nh_am2
1450    o pkg/my82: futile attempt to make results compiler-independent by adding
1451      some "_d 0", etc. no effect.
1452    o for mnc output, fill the 'T' coordinate var with myTime and create a
1453      separate 'iter' variable for iteration count
1454    o pkg/diagnostics:
1455      add new capability: output of Global/Regional & per-level statistics ;
1456      tested against monitor output (including land & thSIce) on various exp.
1457    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1458    
1459    checkpoint57h_done
1460      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1461      data.diagnostics, data.gchem, data.ptracers) is done.
1462    
1463    o pkg/diagnostics: prepare for Global/Regional statistics.
1464      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1465    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1466      and rename it: DIFFERENT_MULTIPLE
1467    
1468    checkpoint57h_post
1469    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1470    o pkg/diagnostics: change output frequency, now in seconds (instead
1471      of Nb of iterations). This requires to change data.diagnostics.
1472    checkpoint57h_pre
1473    
1474    o in mnc, let the user create the output dir if both mnc_outdir_date
1475      and mnc_outdir_num are false
1476    o add fflags() to pkg/diagnostics which allows one to specify, on a
1477      per-file basis, the file precision [default behavior is unchanged]
1478    o added diagnostics to pkg/kpp, including computation of mixed layer
1479      depth based on a temperature/density criterion
1480    o updated verification/natl_box to test the new pkg/kpp diagnostics
1481    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1482    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1483    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1484      not mnc -- this mistake was found by JMC and is now corrected
1485    
1486    checkpoint57g_post
1487    o add Adams-Bashforth 3rd Order time stepping:
1488      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1489      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1490    checkpoint57g_pre
1491    
1492    o make lambda[Theta,Salt]ClimRelax spatially varying
1493      (default remains spatially uniform constant based on tau)
1494    o added new control variables
1495      * init. uVel, vVel, etanN
1496      * lambda[Theta,Salt]ClimRelax
1497    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1498      (suggested by G. Forget)
1499    
1500    checkpoint57f_post
1501    o add parameter "baseTime" = model base time = time at iteration zero
1502      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1503      account for baseTime shift
1504    o move Coriolis arrays from PARAMS.h to GRID.h
1505    checkpoint57f_pre
1506    
1507    o mnc-ifying the seaice package
1508    o introduced an alternative length scale calculation for use in the limiting
1509      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1510    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1511    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1512      as well as grad(vort3).  Made it compatible with both approximate form
1513      for the cubed sphere and full form of these gradients.  Added flag
1514      useFullLeith to select between approximate and full form.  
1515    o add "d0" in getcon.F to reduce differences between compilers/platforms
1516      update output.txt of exp. fizhi-gridalt-hs
1517    o change port_rand funtion to allow to set the seed.
1518    o fix obscure MNC bug involving conversion between reals and integers
1519      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1520        new version is now more standards-compliant
1521    o adjoint-related modifications
1522      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1523      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1524      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1525    
1526    checkpoint57e_post
1527    o Adding eddy stress controls a la Ferreira et al.
1528    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1529    
1530    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1531      update output.txt of exp. fizhi-gridalt-hs
1532    o add more "Z" dimensions and associated coordinate vars to MNC
1533    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1534    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1535      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1536      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1537      months and years.  Requires pkg/cal.
1538    o diagnostics: add pickup functionality
1539      - off by default for backwards compatibility
1540      - current version only uses MDSIO -- MNC will be added
1541    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1542    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1543    
1544    checkpoint57d_post
1545    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1546    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1547      output from the diagnostics package
1548    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1549    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1550      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1551    o add coordinate variables to the MNC output from the diagnostics package
1552    o change MNC-flags default value: true when useMNC=TRUE
1553    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1554      the ability (off by default) to read the grid information using MNC
1555    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1556    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1557    o do snap-shot diagnostics at the middle of the time-interval (instead of
1558      at the end).
1559    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1560      new test for AIM with thSIce + slab-ocean
1561    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1562    o move state variable diagnostics to the beginning of the time step ;
1563      (note: still needs some work specially for snap-shot diagnostics)
1564      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1565    
1566    checkpoint57c_post
1567    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1568    o generate new output.txt files on faulks with g77 & the new -ieee option
1569    checkpoint57c_pre
1570    
1571    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1572      update output.txt of exp. global_ocean.90x40x15
1573    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1574      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1575    o add saltFlux(+File) forcing capability with periodicExternalForcing
1576    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1577    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1578    o improvements for the MNC output from DIAGNOSTICS:
1579      - correct handling of the unlimitied dimension
1580      - all dims now have associated coordinate variables
1581      - variables located at U, V, and Corner ("Z") points are now written
1582        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1583        *all* data points are output
1584    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1585    o added pkg/seaice/seaice_monitor.F
1586    o mdsio_readfield.F can now read files visible only to master MPI process.
1587    o pkg/seaice: some test code for ice-modified ocean stress
1588    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1589      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1590      spurious negative numbers for precipitation and humidity.  Will cause
1591      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1592    o pkg/ctrl/
1593      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1594        May be enabled via doPackDiag
1595      *  introduce z-scaling of
1596         + gradient (doZscalePack) and
1597         + control (doZscaleUnpack)
1598    o pkg/mdsio/
1599      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1600      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1601    
1602    checkpoint57b_post
1603    o simplify options in diagnostics_fill arguments (remove weird combinations)
1604    o fix MNC coordinate variables so that they now contain per-face index
1605      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1606      general, EXCH2 grids are only aligned to a "local" coordinate system
1607    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1608    o Implement instantaneous output within pkg diagnostics:
1609      setting a negative frequency in data.diagnostics produces
1610     "snap-shot" output (as opposed to time-average if freq > 0)
1611    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1612      NOTE: change ptracer diagnostics name: use 2 characters to work with
1613            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1614    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1615      becomes the coordinate variable for the 'T' dimension
1616    o add CF-style coordinate variables to MNC
1617      - just a first cut:  numbers are meaningless on the cubesphere and
1618        missing along the T axis but otherwise it works!
1619    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1620    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1621    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1622      this is based directly on what the model compute, so that the content of
1623      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1624    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1625    o clean up build options files for SunOS, in particular
1626      - remove -traditional from xmakedepend
1627      - change -xarch=v9 to -xarch=native for f77
1628      - restore use of make (not gmake)
1629      - add CC=gcc if using g77
1630    o changes per discussion of AM, JMC, & EH3 today:
1631      - move redundant "grid" variables out of "state" -- in preparation of
1632        creating proper CF-style coordinate variables and in recognition
1633        that any/all grid variables can be easily copied (eg. w/NCO) from
1634        the grid files into any of the other NetCDF files
1635      - *always* output grid variables with MDSIO (this will eventually be
1636        changed)
1637      - output MNC grid file if useMNC is true
1638    o every instance of _END_MASTER() has been found and replaced with
1639      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1640      preprocessors
1641    o re-arrange diagnostics pkg initialisation:
1642     - allow each package to extend the available diagnostics list
1643     - add some checking and fix small problems (multi-threaded, ...)
1644     - new S/R diagnostics_fill (replace fill_diagnostics):
1645       look through the short list of active diag. (instead of the long list)
1646       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1647    
1648    checkpoint57a_post
1649    o this set of changes restores TAMC compatibility
1650      tested for global_ocean.90x40x15 adjoint on trough
1651      (what a pain)
1652    
1653    checkpoint57a_pre
1654    o some modifs in tools/build_options for sunos
1655    o call ctrl_pack for ctrl at end for optimcycle=0
1656    
1657    checkpoint57
1658    o add horizontal bi-harmonic viscosity for vertical velocity
1659      - new parameter viscA4W (defaults to viscA4)
1660      - affects only non-hydrostatic code
1661      - to be done: no-slip lateral boundary conditions
1662    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1663    o implement Implicit Vertical advection for pTracers
1664    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1665      (implemented also for implicit vertical diffusion & advection)
1666    o OBCS: extend application of tracer open boundary conditions
1667      to a strip beyond the boundary of width Olx/Oly
1668    o add call monitor to TAF set of required calls (flow directives)
1669      and include in natl_box_adjoint
1670    o untangle a few ifdefs related to cost, ctrl, autodiff
1671      untangel a few ALLOW_ECCO_OPTIMIZATION
1672    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1673      (theta2, salt2 in ecco_cost_weights)
1674    
1675    checkpoint56c_post
1676    o OBCS as control variables
1677      - update ctrl_ad_diff.list, obcs_ad_diff.list
1678      - remove balance of obcs controls from default
1679      - fix index bug nobcs in ctrl_init
1680      - fix dummy fields filen in ctrl_pack
1681      - add dummy weights for obcs
1682    o lsopt: comment out fort.94 output
1683    o optim:
1684      - remove unnecessary header files
1685      - adjusted namelists
1686      - add xerbla.F to Makefile
1687    o exf:
1688      - multiple modifications of exf_check_range
1689      - unit change in exf_init_runoff from [m/year] to [m/s]
1690    o mdsio:
1691      - i/o-vector change debugLevel from debLevA to debLevB
1692    
1693    checkpoint56b_post
1694    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1695      is called from DO_THE_MODEL_IO
1696      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1697      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1698      - clean up PTRACERS_WRITE_TIMEAVE a little
1699    o add another verification experiment that tests both the cfc-pkg and
1700      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1701      reactive tendencies treated inline with regular timestepping
1702    o testreport previously did a lousy job of comparing small numbers, so
1703      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1704      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1705      testreport.
1706    o ptracers_monitor: bug fix for MPI
1707    
1708    checkpoint56a_post
1709    o GCHEM: finish reorganizating the package
1710      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1711        (introduces another 3D-array for each passive tracer, but only if
1712        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1713        gchemTendency is not needed because the timestep is done separately)
1714      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1715      - GCHEM is now---more or less cleanly---separate from PTRACERS
1716      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1717        so clear to me how that should be done in a general way.
1718    o CFC: improve formatting of output in CFC_ATMOS
1719    o PTRACERS:
1720      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1721        that ALL experiments with ptracers enable can be checked. This makes
1722        GCHEM_MONITOR obsolete.
1723      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1724        monitorFreq
1725      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1726    o add PTRACERS (PTR0[1-5]) to testreport output
1727    o exf_check_range:
1728      * default changed to .TRUE.
1729      * will check values for niter0 if debLevA, every timestep if debLevB
1730      * STOP in exf_check_range if 'out of range'
1731      * range chosen generous to allow for potential extema
1732      TBD: a version with stricter range
1733           permitted range would be runtime parameters
1734    o GMredi:
1735      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1736      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1737      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1738    o GCHEM:
1739      - move call to GCHEM_FORCING_SEP, so that it is now called before
1740        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1741      - introduced a useGCHEM runtime flag and applied it everywhere.
1742      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1743        this flag is now only visible within GCHEM-pkg routines.
1744      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1745        be replaced by a 3D array that is computed before thermodynamics; for
1746        this, the tracer ID iTracer had to be included into the parameter list
1747        of ptracers_forcing
1748      - set up forward_step to call gchem_forcing, that will replace
1749        gchem_forcing_int in ptracers_forcing
1750      - cleaning up
1751    o small cleaning of exch2: remove files that are also in eesupp/src
1752    
1753    checkpoint56
1754    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1755    o mnc: cleanup "full" files--fixes out-of-memory problem
1756    o ECCO-GODAE
1757      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1758      * fully merged and updated from SIO code
1759        windstress sign change affects
1760        - exf_inscal_[u/v]stress
1761        - sign of xx_tau[u/v] adjustments
1762        - signs in cost_scat
1763      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1764      * natl_box_adjoint updated and compressed
1765      * 2-level checkpoint switch added
1766        (tested in EXP. 1 of natl_box_adjoint)
1767      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1768    o SVD
1769      * first complete, non-hacked version for SVD calculations
1770      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1771        performed via direct access files admtlm_vector.it????
1772        (via ctrl_[un]pack)
1773      * optimcycle is used for ARPACK iteration counter
1774        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1775      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1776        and add linear transforms where necessary
1777      * controls are initial/final SST, SSS (can be extended; need to check
1778        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1779    o mdsio: filename info to both stderr, stdout
1780    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1781      from sign change
1782    
1783    checkpoint55j_post
1784    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1785      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1786    o add consistent build directories and .cvsignore files to verification
1787    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1788    o make all subroutines 30 or less characters in length for certain older
1789      compilers to work (a thorough search only turns up two routines in
1790      pkg/ptracers)
1791    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1792      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1793    
1794    checkpoint55i_post
1795    o change arrays for total vertical diffusivity (2.D if explicit,
1796      3.D if implicit) ; each ptracer uses its own background value.
1797    o added mnc/NetCDF output capability to ocn_compon_interf
1798      - added bits to verification/cpl_aim+ocn so that it can run on
1799        ITRDA and other clusters without the mpirun "-wd" option
1800    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1801      configuration
1802    o give MNC the ability to create additional files rather than
1803      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1804      - the default is just less than 2GB which is a practical limit
1805        on many systems
1806    o Compute the non-local term using either KPP vertical diffusivity (=default)
1807       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1808    
1809    checkpoint55h_post
1810    o add verification test "vermix"
1811    o remove all the *_ioinc flags and replace with the single global
1812      outputTypesInclusive flag
1813    o allow to set a vertical profile of vertical diffusivity for T & S
1814    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1815    o useMNC moved from data.mnc to data.pkg
1816    
1817    checkpoint55g_post
1818    o Renaming carbon AD experiments to comply with testreport conventions
1819    o Updating adjoint of Held-Suarez hs94.1x64x5
1820    o Fixing directives for non-ECCO forward_step, after ECCO directives
1821      have been fixed to avoid recomp. of do_oceanic_phys
1822      Works well for global_ocean.90x40x15,
1823      but recomp. issue remains for carbon
1824    o Updating adjoint output for natl_box_adjoint after
1825      pkg/ecco has been modified (see taga c55d_post)
1826    
1827    checkpoint55f_post
1828    o rename to timeave_init_fixed
1829    
1830    checkpoint55e_post
1831    o some delicate re-shuffle of store directives to avoid one
1832      extra call of do_oceanic_physics
1833      affects ecco_the_main_loop.F, do_oceanic_physics.F
1834      checkpoint_lev1_directives.h
1835    o NB: this may break global_ocean adjoint temporarily,
1836      but it is clear how to fix it. Will do later, need this now.
1837    
1838    checkpoint55d_post
1839    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1840    o ecco_cost_weights is modified to 1x1 runs
1841    o modifs to allow observations to be read in as
1842      single file or yearly files
1843    o enable to read exf forcing fields as either
1844      single file or yearly files (flag useExfYearlyFields)
1845    checkpoint55d_pre
1846    
1847    o switch between 2-level and 3-level checkpointing
1848    o add ability of MNC to write local and "partial" (eg. 2D slices where
1849      the full 3D field is never actually stored) arrays to NetCDF files
1850      with the correct (that is, the complete multi-dimensional) set of
1851      array indicies
1852      - used in mom_vecinv() to write the diagFreq output
1853      - tested (demonstrated) in verification/aim.5l_cs
1854    o further mnc-ification
1855      - add verification/lab_sea to the list with mnc setups
1856      - fix undefined mnc v-names in cd_code
1857      - add kpp to mnc output (both snapshot and timeave)
1858    o non-hydrostatic code
1859      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1860        in calc_gw.F
1861      - defaults to viscAh
1862      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1863        friction or Leith) in non-hydrostatic mode, as long as there is
1864        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1865    o pkg/cost
1866      extend simple cost functions to treat time mean quantities
1867      (T,U,V) via cost_accumulate_state from cost_tile
1868    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1869        be 2 times larger than the minimum size the advection scheme requires.
1870        now get a perfect conservation of salt in advect_cs test-exp (updated)
1871    o GGL90 (Gaspar's TKE mixed layer)
1872      - add horizontal diffusion of TKE, requires exchanges in
1873        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1874        default. In OPA there is no horizontal diffusion of TKE but the
1875        mixing coefficients are computed from a horizontal average of TKE of
1876        6 points or so. I think that diffusion has a little more physical
1877        justification.
1878      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1879        was in vain)
1880      - mask tke-variable in ggl90_init
1881    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1882    o fix biharmonic diffusion on CS-grid.
1883    o more obcs stuff
1884      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1885        for reading boundary values. This routine is called from
1886        obcs_prescribe_read
1887      - updated obcs_check
1888      - changed sponge layer relaxation parameter units for days to seconds
1889      - turned off sponge layer by default
1890      - changed argument list of OBCS_CALC to myTime+deltaTclock
1891      - fixed about 35 bugs in obcs_external_fields_load
1892    
1893    checkpoint55c_post
1894    o obcs stuff
1895      - new runtime flags useOBCSprescribe, useOBCSbalance
1896      - re-arranged obcs_calc
1897      - moved exf_getobcs to obcs_prescibe_read
1898        obcs_prescibe_read is called after ORLANSKI stuff
1899        and independent of it (executable can contain all).
1900      - updated obcs_check
1901      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1902        These may be necessary only if tangential velocities are
1903        prescribed at OB, not sure, needs testing.
1904    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1905      which simplifies the calls and passes the ifc check-bounds test
1906    
1907    checkpoint55b_post
1908    o add a 2D scalar, Z location, exchange_2 routine.
1909    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1910      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1911      affects advect_cs results (for the wrong reason): update output.txt
1912    o use a more standard discretization for biharmonic viscosity ;
1913     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1914      affects results of dome set-up: update output.txt
1915    o fix gad_advection.F (CubedSphere part), back to version 1.23
1916    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1917    
1918    checkpoint55a_post
1919    o merged code to
1920      * prescribe/read time-dependent open boundaries
1921        (works in conjunction with exf, cal)
1922      * sponge layer code for open boundaries
1923      * each boundary N/S/E/W now has its own CPP option
1924        (healthy for the adjoint)
1925    
1926    checkpoint55
1927    o up-to-date adjoint of previous breaks
1928      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1929      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1930      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1931      - carbon: * remove tr1-related adjoint verification
1932                * add ptracer as control variable
1933    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1934      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1935    
1936    checkpoint54f_post
1937    o in verification/carbin/ remove experiment related to
1938      ALLOW_PASSIVE_TRACER (array tr1 etc)
1939      code_ad/ input_ad/ results_ad
1940    
1941    o add two new packages
1942      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1943        + subject to optimization (memory)
1944      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1945        + subject to reordering (many GOTOs in the original code)
1946        + so far opps is called for every (i,j) point, and then operates in
1947          the vertical; one may want to reorder the scheme in order operate in
1948          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1949          fields)
1950    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1951      - all verification tests compile and run with linux_ia32_g77
1952      - defaults are compatible with current input files--nothing
1953        should change if you were not previously using MNC
1954      - MNC output has been added in numerous places (eg. timeave)
1955        but there are still a few writes not yet do-able with MNC
1956        (this is in progress)
1957      - flags now allow for either/or/both use of MDSIO and MNC and
1958        documentation will soon follow
1959      - numerous small formatting cleanups for ProTeX
1960    o add version info (via BUILD_INFO.h) to MNC and stdout
1961    
1962    checkpoint54e_post
1963    o add two new packages
1964      - pp81 (Packanowski and Philander, 1981), Richardson number and
1965        stratification dependent mixing
1966      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1967      - these scheme operate in a similar manner as KPP (without ghat, of
1968        course), however there is only one diffusivity that is used for both
1969        temperature and salinity (and passive tracers)ç
1970    o add offline package
1971    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1972      provided by Stephanie Dutkiewicz
1973    o genmake2: add ability to search for C compilers and cleanup test output
1974      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1975    
1976    checkpoint54d_post
1977    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1978    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1979      leading to additional shift by 5 days each year of integration
1980       (i.e. leading to considerable offset over the years)
1981    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1982    o start with no AB and no initial filtering (staggerTimeStep):
1983      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1984    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1985      (external loading & cpl import/export stay in forward_step.F)
1986    o update coupling interface to work with new staggerTimeStep
1987    o change MDSIO ptracers_pickup.
1988    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1989    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1990    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1991    
1992    checkpoint54c_post
1993    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1994      this affects (truncation error) output.txt of test-exp:
1995       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1996    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1997    o change Qnet to always be the net heat flux, (+upward).
1998      affects (truncation error) output of natl_box exp.: updated
1999    o define the max number of passive tracers in PTRACERS_SIZE.h
2000    o start to test mnc routinely in exp0
2001    o add sea-ice loading (sIceLoad) as a new forcing field.
2002    
2003    checkpoint54b_post
2004    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2005       impressive on Altix and Opteron systems)
2006    o diagnostics can now write NetCDF files through the mnc package
2007    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2008    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2009    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2010      affects (truncation error) output of lab_sea & natl_box exp.: updated
2011    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2012    
2013    checkpoint54a_post
2014    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2015    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2016    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2017    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2018      + internal_wave (shift in writing cg2d_ini_res)
2019    checkpoint54a_pre
2020    
2021    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2022      - modified verification/lab_sea and natl_box_adjoint accordingly
2023    
2024    checkpoint54
2025    checkpoint53g_post
2026    o prepare splitting of thermodynamics: store convect.counter in common block
2027    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2028      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2029    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2030    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2031    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2032    o restore adjointability
2033    
2034    checkpoint53f_post
2035    o modifications that affect AIM experiment results (update output.txt):
2036      - no advection of S at top interface Nr (pkg/generic_advdiff)
2037      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2038    o AIM pkg:
2039      - include stability function into surf.Flux derivative relative to Tsurf
2040      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2041    
2042    checkpoint53e_post
2043    o merged cylindrical coord configuration
2044    o added rotating_tank experiment
2045    checkpoint53e_pre
2046    
2047    checkpoint53d_post
2048    o faulks upgraded: re-generate output.txt that have changed:
2049       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2050    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2051    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2052    o added Sadourny discretization of Coriolis
2053      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2054      - re-enabled use of omega3 (useAbsVorticity)
2055    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2056      vector-invariant equations
2057      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2058    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2059      hopefully without new bugs
2060      - still to do: biharmonic friction for non-hydrostatic w
2061    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2062    o regenerated output for global_ocean_ebm (using -ieee)
2063    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2064      of mom_common/
2065      - simple re-arrangement of instructions within computing loop
2066    checkpoint53d_pre
2067    
2068    checkpoint53c_post
2069    o new version of coupler for AIM+thSIce and Ocean models
2070     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2071     - land: change Evaporation of snow
2072     - aim with thSIce: fix bug in snow-precip.
2073    o changes to calc_gw.F
2074     - bug fix for w^2 term near the bottom boundary
2075     - (hopefully) improve the lateral slip boundary condtions for use with
2076        partial/looped cells
2077      - because the bug fix changes two verification experiments anyway (exp5
2078        and plume on slope), change the lateral boundary condition from half slip
2079        to the value of no_slip_sides
2080    o ebm package wasnt quite up to the parallel task. Fixed that.
2081    o Adjoint of EBM package + verification
2082      * TLM OK
2083      * ADM not sufficient accuracy yet (needs further testing)
2084    
2085    checkpoint53b_post
2086    o Commiting new energy balance model to repository
2087      * package is pkg/ebm
2088      * verif. is verification/global_ocean_ebm
2089      * references are in ebm_driver.F
2090    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2091    C        Global thermohaline circulation. Part I:
2092    C        Sensitivity to atmospheric moisture transport.
2093    C        J. Climate 12(1), 71-82
2094    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2095    C        Global thermohaline circulation. Part II:
2096    C        Sensitivity with interactive transport.
2097    C        J. Climate 12(1), 83-91
2098    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2099    C        Destabilization of the thermohaline circulation
2100    C        by atmospheric eddy transports.
2101    C        J. Climate 7(12), 1870-1882
2102    o Will need long integration testing.
2103    checkpoint53b_pre
2104    
2105    o created pkg/mom_common in preparation for variable viscosity code
2106    o renamed and split ini_mnc_io
2107    o pkg/land: only liquid water can diffuse or run-off
2108    o AIM using land: soil wetness availability account for snow
2109    o added printMapIncludesZeros to EEPARMS namelist
2110    
2111    checkpoint53a_post
2112    o restore TAMC compatiility for exf_constants.h
2113      (no usage of _d in .h)
2114    o Additional storing in KPP in an attempt to fix
2115      TAMC problem with adjoint of KPP code.
2116      (no success...)
2117      Identical code works fine with TAF.
2118    o Fixed verification/natl_box_adjoint experiments.
2119      Initial conditions for Experiments 4 and 5 are now
2120      set to "SEAICE_initialHEFF=0", which is more reasonable,
2121      and hence gives results closer to that of Experiment 2.
2122      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2123    
2124    checkpoint53
2125    o stable checkpoint with up to date adjoint
2126      TLM tests only run for 1st grdchk at the moment. Its unclear if
2127      this is a code problem or a problem with resetting code for g_
2128      variables that is being autogenerated wrong.
2129      Otherwise:
2130       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2131       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2132         are both still in chaos following their security messes.
2133    
2134    checkpoint52n_post
2135    o various build (mostly genmake2) changes including:
2136      - ability to build/run more easily within Cygwin and MacOS X
2137      - more complicated Makefiles with a stronger dependence on Gnu Make
2138    o pkg/seaice modifications
2139      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2140        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2141        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2142      - changed proxy for geostrophic velocity and updated
2143        verification/lab_sea/results/* accordingly
2144      - removed ADI dynamic solver from pkg/seaice
2145      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2146        they caused a segmentation fault under certain circumstances
2147      - removed unused field WATR
2148    o bug fix in exf-package:
2149      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2150         now reflect that.
2151    o small fixes in the cal-package:
2152      - set reference date to first of January for the 'model'-calendar
2153      - failing of cal_CheckDate in cal_FullDate now actually results in a
2154        warning
2155    o small modifications in exf-package to increase flexibility:
2156      - change climtempfreeze from a constant to a runtime parameter that
2157        is specified in data.exf_clim (default = -1.9)
2158      - introduce runtime parameter windstressmax (default = 2.0) that is
2159        specified in data.exf
2160    o fix in pkg/thsice:
2161      - update Evap (Tsf changes) to be consistent with Latent heat flux
2162      - maintain snow precipitation unchanged (even if Tsf >=0).
2163     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2164    
2165    checkpoint52m_post
2166    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2167      this does not change any of the results, because myIter=0 in swfrac always
2168      lead to jwtype=2 (the default anyway), but the call makes little sense
2169      as a default
2170    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2171    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2172      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2173    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2174    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2175    o extending useSingleCpuIO option to work with new exch2 I/O format
2176      - old-style, missing-tile I/O is still accessible by defining CPP
2177        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2178    o monitor package can write to NetCDF files and/or STDOUT
2179    o fix re-definition bug in MNC_GRID_INIT_ALL()
2180    o doc/api_reference added
2181      - a framework for building an API Reference Manual using all
2182        the "protex" comments embedded in the code
2183      - see pkg/generic_advdiff, pkg/mnc for examples
2184    o MNC:
2185      - make myThid the last argument for all subroutines
2186      - new default for the grid files: NO halos
2187      - add useMNC and other run-time flags
2188      - separate per-file-group handling of the unlimited dimension
2189      - early initialization of MNC w/ flags read at the eeboot stage
2190        and lookup tables set in initialize_fixed
2191      - write all MNC output to a freshly-created directory
2192    o thermodynamics sea-ice (thsice) is now tested with testreport.
2193    o test exp. advect_cs: use the standard cs32 grid ; update output.
2194    o Added functionality to grdchk:
2195      pick global i,j,k position (or nearest wet) where to perform check.
2196    
2197    checkpoint52l_post
2198    o new land formulation:
2199      a) use ground enthalpy as prognostic variable to ensure exact
2200         energy conservation.
2201      b) account for water temperature and for latent heat of freezing
2202         in all processes (rain, run-off, ground storage)
2203      c) compute surface and ground temperature implicitly.
2204    o aim_v23 modification for new land model:
2205      a) Treat separately land / ocean / sea-ice surface fluxes
2206         to allow implicit computation of land & sea-ice surface temp.
2207      b) add snow precipitation.
2208    checkpoint52l_pre
2209    
2210    o fix problem (when 1 tile is empty) in min/max monitor.
2211    o fix bug in timeAve (u,vZetatave in common block)
2212    o no restoring terms under ice for pkg/seaice
2213    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2214    o bug fix for pkg/seaice pickups
2215    o change MNC call locations and add coordinate attributes
2216    o mask vorticity at the corner ; affects global_ocean.cs output
2217    o fix ini_curvilinear_grid ; test CS experiments with mpi
2218    o aim.5l_cs: modify sea-ice fraction input file ; update output
2219    o exf: Adding simple range check routine for exf fields after read
2220    
2221    checkpoint52k_post
2222    o removed top-level directory "diags"
2223      - we migrated these functions to pkg/timeave a long time ago
2224    o fixed bug introduced in pkg/monitor
2225    o accuracy ctrlprec = 32 insuffient for gradient checks using
2226      averaged fields (I/O via cost_averages)
2227      -> use ctrl.h in active_file*.F to control I/O precision.
2228    o paramter list of CALL ADTHE_MAIN_LOOP
2229    o added initial do_the_model_io to ecco
2230    o set all ...Freq to zero after cost_final
2231      taveFreq, dumpFreq, pChkptFreq
2232    o MAIN and ECCO differentiability restored
2233    
2234    checkpoint52j_post
2235    o fix nchklev in tamc.h for global_ocean...
2236    o Bringing flow and store directives up-to-date
2237    o Really weird thing!
2238      call do_the_model_io from the_main_loop with parameters
2239      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2240      TAF places a faulty re-call of initialise_varia
2241      after cost_final call which should not be there!
2242    checkpoint52j_pre
2243    
2244    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2245      error messages
2246    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2247    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2248      debug output
2249    o modfied mdsio_writefield.F to handle non-global files under exch2
2250    o update AIM Cubed-Sphere exp (aim.5l_cs):
2251      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2252    o update AIM Equatorial Channel exp:
2253      use standard aim_v23 pkg and change the SST fields to be more realistic.
2254    o globalFile now works with exch2
2255    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2256      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2257    o limit timeave output for hi-res integrations
2258    
2259    checkpoint52i_post
2260    o removed CPP_EEOPTIONS.h from verification/*/code
2261    o updated the tiling for global_ocean_pressure
2262    checkpoint52i_pre
2263    
2264    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2265      the old pkg/aim).
2266    
2267    checkpoint52h_pre
2268    o shortened offending lines in exch2_send_rx?.template
2269    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2270    o genmake2: add build & execute test for NetCDF code
2271    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2272      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2273    o added useSingleCPUIO flag to monitor.F and mon_out.F
2274    o added temporary hack for sea-ice dynamics on the cube:
2275      metric terms are ignored and it is assumed that
2276      there is no sea-ice on cube faces 1, 2, 4, and 5.
2277    
2278    checkpoint52f_post
2279    o added exch2 cube routines to pkg/exch2
2280    o modified hs94.cs-32x32x5 to use it
2281    o added new grid files to hs94.cs-32x32x5
2282    checkpoint52f_pre
2283    
2284    checkpoint52e_post
2285    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2286      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2287    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2288      to work with implicit vertical advection and AB ;
2289    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2290    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2291     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2292    checkpoint52e_pre
2293    
2294    o fix bug in impldiff when Nr=1 or Nr=2.
2295    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2296    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2297    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2298      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2299    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2300    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2301    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2302    
2303    checkpoint52d_post
2304    o re-tiled many expts to allow comparison in multi-processor mode
2305      - updated output accordingly
2306      - changed hs94.128x64x5 to use intial T from file rather than use the
2307        random number generator
2308    o add infrastructure in model routines for fizhi and gridalt packages
2309    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2310    o changes to permit hi-res, cubed-sphere, configuration
2311      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2312      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2313      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2314        of surface winds for the cube
2315      (A verification experiment, based on global_ocean.cs32x15, but with
2316       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2317       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2318       complete with example surface forcing files and matlab scripts to look
2319       at the output and compare it with that of global_ocean.cs32x15.)
2320    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2321       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2322       to conform to the common rule.
2323    o check-in the first version of the coupler + interfaces for multi-components
2324       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2325       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2326       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2327       - ocean and atmos. share the same horizontal grid (no interpolation).
2328       - exchanges between component and coupler is done in forward_step
2329    o new verification experiment, cpl_aim+ocn:
2330       coupled ocean - AIM atmosphere on cs32 grid.
2331    
2332    checkpoint52d_pre
2333    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2334    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2335    
2336    checkpoint52c_post
2337    o Fixing OPTIONS files for use of exf:
2338      - ALLOW_ECCO not needed
2339      - ECCO_CPPOPTIONS.h should not be included from
2340        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2341        as has been the case in the past
2342      - All cal/exf related options are currently set in
2343        single header file. Should remain so until we
2344        agree on a consistent new policy.
2345    o Removed all CPP options for cal package.
2346      cal has no more CPP options.
2347    o modified STOREs in GAD_ADVECTION
2348    o corrected key comp. for passkey
2349    
2350    checkpoint52b_post
2351    o new version: "thsice" of thermodynamic sea-ice pkg:
2352     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2353     - modify fluxes but do not change theta directly;
2354     - light cleaning of bulk_force pkg (still needed with thsice).
2355     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2356       + output_thsice.txt to test thsice & bulk_force pkgs.
2357    o put back grid & coriolis monitor output.
2358    checkpoint52b_pre
2359    
2360    o call "do_the_model_io" at the beginning (=> dump initial state)
2361    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2362    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2363      (need info on NUMBER_OF_PTRACERS)
2364    o missing PTRACERS headers in some routines
2365    o default tamc.h in pkg/autodiff supposed to crash
2366      to ensure proper customization
2367    
2368    checkpoint52a_post
2369    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2370      - moved surfaceTendencyTice from pkg/seaice to main code
2371      - subroutine FREEZE_SURFACE now limits only surface temperature
2372        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2373        => new output.txt for global_ocean.cs32x15 & global_with_exf
2374      - keep the old version of FREEZE for backward compatibility;
2375        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2376      - corresponding modifs for TAF directives
2377    o added surface flux output variables to TIMEAVE_STATVARS
2378    o time-averaged output for pkg/ptracers
2379    o fix problem with ECCO-related divided adjoint
2380      snapshot file was missing some ad-variables,
2381      but no warning issued by TAF
2382    
2383    checkpoint52a_pre
2384    o some bug fixes for #undef REAL4_IS_SLOW
2385    
2386    checkpoint52 = ecco_c52_e35
2387    o after testing adjoints of checkpoint51u_post
2388    
2389    checkpoint51u_post
2390    o this is the post-merge tag of the ecco-branch
2391      (needs another clean checkout and re-testing)
2392    o various natl_box_adjoint configs and results
2393      but no input fields
2394    o obcs adjoint not yet merged!
2395    o adding ECCO global 1x1 and 2x2 degree configs
2396    o updated/extended some store directives for seaice
2397    o pkg/ecco now containes ecco-specific part of cost function
2398    o top level routines the_main_loop, forward_step
2399      supersede those in model/src/
2400      previous input data.cost now in data.ecco
2401      (new namelist ecco_cost_nml)
2402    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2403    
2404    checkpoint51t_post
2405    o this is the pre-merge tag of the ecco-branch
2406    
2407    checkpoint51s_post
2408    o cleanup: removed various obsolete #define-s
2409    o pkg/grdchk
2410      - renamed 'ph-grd 3' to 'grad-res'
2411      - merged from ecco-branch
2412        (remaining bug fixes for obcs gradient checks)
2413      - additional high-precision output for testreport
2414        (grep for 'precision_grdchk_result')
2415    
2416    checkpoint51r_post
2417    o cleaned up or removed CPP_OPTIONS.h files
2418    o updated results for some of the tests to reflect the new
2419      optfiles (-ieee: -O0 instead of -O3)
2420    
2421    checkpoint51q_post
2422    o cd_code:
2423      - moved cd_scheme.F -> cd_code_scheme.F
2424      - separate read_checkpoint from cd_code_ini_vars.F
2425      - separated cd_code part from write_checkpoint
2426      - updated AD_SOURCE, generated .flow
2427      - added CD_CODE_VARS.h to the_main_loop
2428      - Moving cd_code specific store dir.s to pkg/cd_code
2429    o ctrl package totally restructured
2430      - pack/unpack now optional and decoupled from
2431        xx_/adxx_ I/O
2432      - ctrl_pack/unpack cleaned
2433        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2434      - confined inclusion of AD_CONFIG.h to where necessary.
2435    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2436    
2437    checkpoint51p_post
2438    o create initial cd_code package
2439      - WARNING: the initialization of fields within packages
2440        is broken because INI_FIELDS (where READ_CHECKPOINT is
2441        called) is called *before* PACKAGES_INIT_VARIABLES.
2442        This seems to be backwards since
2443        1) its important to initially zero the entire field including
2444           the "halo" region
2445        2) zeroing needs to be done *before* reading pickup info
2446           and the pickup call might or might not happen in any
2447           particular run
2448      - this needs an overhaul for R2
2449    o cleanup verification/*/code/GMREDI_OPTIONS.h
2450    o cleanup testreport
2451    
2452    checkpoint51o_post
2453    o bringing AD-related verif's up to date with genmake2
2454      - carbon/
2455      - global_ocean.90x40x15/
2456      - hs.94.1x64x5/
2457      - (front_relax/ )
2458    o (more) consistent directory structure for AD-related verif.'s
2459    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2460    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2461    o bug fix in find_alpha.F for MDJWF:
2462      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2463        change rho -> rho-rhoConst
2464      - replace call find_rho to find_rhonum
2465    o initialisation of rFlx extended to full array (required by TAF)
2466      and shifted to thermodynamics
2467    o removed PTRACERS.h in ptracers routine
2468    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2469    o Correcting initialisations for fVerU, fVerV.
2470    o helping TAF to recognize dependency on kUp for
2471      fVerU, fVerV
2472    o Replacing delZ by delR in pkg/ctrl/
2473    checkpoint51o_pre
2474    
2475    o undid all of cp51 pending some cleanups and discussion
2476    o added the [#include "AD_CONFIG.h"] statement to all files that need
2477       it for adjoint/tl #defines
2478     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2479     o removed tools/genmake since it no longer works
2480    
2481    checkpoint51n_post
2482    o modifications to make FREEZE flux visible to pkg/kpp
2483      - moved surfaceTendencyTice from pkg/seaice to main code
2484      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2485      - subroutine FREEZE now limits only surface temperature
2486        (this means new output.txt for global_ocean.90x40x15,
2487         global_ocean.cs32x15, and global_with_exf)
2488    o added surface flux output variables to TIMEAVE_STATVARS
2489    
2490    checkpoint51n_pre
2491    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2492    o added [#include "AD_CONFIG.h"] to all files that use the following
2493      defines:
2494      - ALLOW_ADJOINT_RUN
2495      - ALLOW_TANGENTLINEAR_RUN
2496      - ALLOW_ECCO_OPTIMIZATION
2497    
2498    checkpoint51m_post
2499    o incorporating changes to get TAMC/TAF working in genmake2
2500      - added new TAMC/TAF targets to the Makefile
2501      - various cleanups related to package handling
2502      - these changes should have no impact on the forward model
2503    
2504    checkpoint51l_post
2505    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2506     - faster algorithm for cal_addtime.F
2507     - higher precision arithmetic, where needed
2508     - pkg/exf *startdate variables changed from calendar date to
2509       model integration time
2510    
2511    checkpoint51l_pre
2512    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2513    o enable to apply restoring on S & T only in a latitude band.
2514    o update output (external_forcing_surf modif. change truncation errors)
2515       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2516    
2517    checkpoint51k_post
2518    o change default to: useNHMTerms=.FALSE.
2519     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2520       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2521     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2522        exp1, ideal_2D_oce
2523     - change data file of oceanic exp (leave the results unchanged for now)
2524       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2525    o set gravitySign automatically according to the vertical coordinate used
2526      (and change sign: back to "logical" value: +1 when R increases downward)
2527    o added an include barrier to the default CPP_OPTIONS.h and
2528      removed the #include "PACKAGES_CONFIG.h" from it
2529    o fix a bug in mom_fluxform (from chk51j_post)
2530    
2531    checkpoint51j_post
2532    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2533    o adjusted some flow directives (dynamics, thermodynamics)
2534    o added cubed-sphere case to test cost function
2535    o heckpoint_lev?_directives.h now include
2536      pkg-specific directives, whenever those are enabled.
2537    o Moving pkg-specific flow directives to corresponding pkg
2538      Moving pkg-specific differentiation list to corresponding pkg
2539      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2540      ---> conventions are
2541           - pkg_ad.flow
2542           - pkg_ad_diff.list
2543           - pkg_ad_check_lev?_dir.h
2544    
2545    checkpoint51i_post
2546    o merge of the branch-genmake2
2547      - knowingly breaks the older genmake
2548      - automatic generation of all ALLOW_${PKG_NAME} defines
2549      - new testreport supersedes older testscript
2550    o large number of package inclusion and header cleanups
2551    checkpoint51i_pre
2552    
2553    o new output for adjoin of global ocean vector invariant
2554    o fix for checkpoint of thermodynamic seaice and bulk_force
2555    o Steph gchem various cleanups
2556    
2557    checkpoint 51h_pre
2558    o fixed some single quotes
2559    o modify gchem pkg to be more versatile
2560    o modifications to clean up dic pkg
2561    o add pkg/cfc
2562    
2563    checkpoint51g_post
2564    o provide links for ARPACK and ADM*TLM
2565    o start removing verification/vero/
2566    o update AD-related stuff
2567      (in particular some IF-statements in model/src/ routines)
2568    o adding to verification/global_ocean.90x40x15/ adjoint of
2569      vector invariant setup
2570    
2571    checkpoint51f_post
2572    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2573    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2574      of tracer Green's fucntions for ocean inversion project.
2575    
2576    checkpoint51f_pre
2577    o Added on-the-fly spatial interpolation capability
2578        "USE_EXF_INTERPOLATION" to pkg/exf.
2579      - This is a temporary Cartesian-grid hack until
2580        the super-duper ESMF coupler becomes available.
2581      - See verification/global_with_exf/README for usage example.
2582      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2583        flags and modified pkg/seaice accordingly.
2584    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2585        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2586        non-local transport term.
2587    
2588    checkpoint51e_post
2589    o pkg/mom_vecinv:
2590      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2591      - add time-ave diagnostic of vorticity advection.
2592    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2593    o atmospheric geopotential: - include water vapor effect;
2594                                - use p^kappa in p* scaling.
2595    o land pkg: read initial state from files.
2596    o AIM : add stratospheric drag in the upper level
2597    
2598    checkpoint51d_post
2599    o change function ILNBLNK (=> last non-blank char.) to return zero
2600      (instead of the string length) when the string. char is empty
2601    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2602    o modif's to restore TAMC compatibility
2603      - avoid "_d" constructs in PARAMETER declarations
2604      - avoid interrupting lines by comment lines
2605    o Use cluster local disks for purely local I/O
2606      vs. globally visible disks needed for ctrl stuff
2607      (merged from ecco-branch)
2608      - new active_file_loc... and mdsio_..._loc routines
2609      - affected packages: autodiff, ctrl, grdchk, mdsio
2610    
2611    checkpoint51c_post
2612    o introducing integer flag debugLevel
2613      - debLevZero: suppress all output
2614      - debLevA: standard
2615      - debLevB: equivalent to current debugMode=.TRUE.
2616    o introducing pathname variable mdsioLocalDir for mdsio
2617      that can be specified at runtime
2618      (relevant for cluster I/O to local disk)
2619    `
2620    >>>checkpoint51b_post
2621    adjoint of ptracers
2622    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2623    o extended state in checkpoint_lev?, etc.
2624    o alternative ctrl/cost with tr1 or ptracer
2625    o new comlev1_bibj_ptracers
2626    o new ptracers.flow
2627    o made ptracers_forcing same as external_forcing_s
2628    o added verification for adjoint with ptracers
2629      - adm. grdchk fail so far
2630      - tlm. grdchk OK
2631      - checked tapelev/comlev recomputations: OK
2632    <<<checkpoint51b_pre
2633    
2634    checkpoint51a_post
2635    o added code for biogeochemistry package
2636      - new pkgs: dic, gchem
2637      - new subroutine in ptracers
2638    o modify code for biogeo packages
2639      - in model/src and pkg/ptracers
2640    
2641    checkpoint51
2642    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2643      - autodiff, ctrl, exf, grdchk, seaice
2644      kept separate packages
2645      - cost, ecco, obcs
2646    o updating verification/internal_wave, verification/lab_sea
2647      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2648    
2649    checkpoint50i_post
2650    o Preparing next differentiable checkpoint and sync
2651      of MAIN vs. ecco-branch
2652      - 1st step: this one is differentiable
2653      - 2nd step: next(! not this) checkpoint will have updated packages
2654                  from ecco-branch)
2655    
2656    checkpoint50h_post
2657    o new package "land": provide surface BC for AIM.
2658    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2659    o AIM: use true log-P extrapolation for near surface temp (= as in
2660        F.Molteni paper) ; update aim.5l_cs output.
2661    o New variable in PARM03 for more flexible pickups
2662    o somewhat cleaned package initialisation sequence for
2663      ctrl/ cost/ ecco/ in packages_... routines
2664    
2665    checkpoint50g_post
2666    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2667      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2668      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2669        made the default because of faster convergence than ADI
2670    
2671    checkpoint50f_post
2672    o exf totally restructured
2673      - replaced all exf_set_ routines by one generic exf_set_gen.F
2674        and made sure it's still differentiable
2675      - split exf_getffields.F into new exf_bulkformulae.F
2676      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2677      - updated adjoint/makefile and relevant verif. accordingly
2678    
2679    checkpoint50f_pre
2680     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2681          + change Evap over land. (update aim.5l_cs output)
2682     o added missing .cvsignores and made uniform across expts
2683     o changed configuration of tidal_basin_2d expt
2684     o added pkg/debug functions for tracing code in fatal crashes
2685     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2686     o new fn in pkg/monitor to stop model if solution grows too big
2687     o removed lots of single quotes from comments
2688    
2689    checkpoint50e_post
2690    o make KPP work with PTRACERS
2691     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2692       nearly a copy of kpp_transport_s
2693     - there is no analogue to SurfaceTendencyS, so I have to use
2694       gPtr(of the surface layer) instead
2695    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2696    checkpoint50e_pre
2697    
2698    checkpoint50d_post
2699    o change kpp output from multiple-record state files to single-record state
2700      files analogous to write_state.F
2701    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2702      analogous to the cg2d-related output.
2703    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2704      so that writing to internal file fn (with length 512) fails.
2705    checkpoint50d_pre
2706    
2707    checkpoint50c_post
2708    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2709    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2710    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2711    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2712    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2713    
2714    checkpoint50c_pre
2715    Merging from release1_p13:
2716    o bug fix for pkg/seaice dynamic solver
2717    o Added SEAICE_initialHEFF to pkg/seaice
2718    
2719    checkpoint50b_post
2720    o store u*,v* in gU,V instead of in guNm1,gvNm1
2721    o in order to put the momForcing out of the Adams-Bashforth:
2722      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2723      to timestep.F
2724    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2725    o re-generate output for highly sensitive test-exp:
2726       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2727    
2728    checkpoint50b_pre
2729    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2730    o corrected CPP option mismatch in exf_Bulk... functions for case
2731      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2732    
2733    checkpoint50a_post
2734    o Bug fix for merging between c50 and KPP.
2735      ikey was passed from thermodynamics to kpp_calc via
2736      common block rather than being recomputed in kpp_calc,
2737      in contradiction with new key itdkey.
2738      New key ikppkey created, and tamc.h headers updated.
2739    
2740    checkpoint50
2741    - 2nd step of merge with ecco-branch:
2742      merge changes in ecco-branch back into main trunk
2743    - bug fix in find_alpha
2744    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2745    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2746    - merged some sliced AD support routines
2747    
2748    checkpoint49
2749    merged from ecco-branch:
2750    o exf:
2751      - Enable initialisation of forcing fields to constant
2752        (runtime) values.
2753      - in exf_getffields.F
2754        Reduce i-/j-loop to interior domain, discarding overlaps.
2755        That also fixes wrong TAF-key computations for key_1, key_2
2756        with bulf formulae.
2757      - exf_init.F modify #ifdef for exf_init_evap
2758      - exf_getffieldrec.F, ctrl_getrec.F
2759        The following INT-usages are not safe:
2760          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2761          fldcount = int(fldsecs/fldperiod) + 1
2762        and were modified.
2763    o autodiff: checkpoint_lev...
2764      - updated storing for bulk formulae (some arrays were missing)
2765      - added state for seaice package
2766      - synchronized with main branch
2767    o DIVA:
2768      Modif.s in
2769      - the_main_loop.F
2770      - the_model_main.F
2771      and added cost_final_restore.F cost_final_store.F
2772      o With these changes, it is possible to fully separate
2773        the first forward run to compute the cost function (mdthe_main_loop)
2774        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2775        into separate model executions.
2776        This enables better tuning of DIVA to given queue sizes.
2777      o Loss of cost function value in consecutive DIVA runs is
2778        fixed by storing to 'costfinal' file.
2779      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2780        beginning/end of adjoint integration is accounted for.
2781      The current changes apply to TAF-1.4.26.
2782      TAF has one remaining bug, requiring one manual change
2783      (see MITgcm manual).
2784    o cal: synchronized between MAIN and ecco-branch
2785    
2786    checkpoint48i_post
2787    o Changes to restore differentiability of code w.r.t. previous tag
2788      (mostly adding new routines to make list and replacing
2789      pressure by totPhiHyd).
2790    o Updated and merged grdchk package
2791      - has both ADM and TLM checks
2792      - works for single- and multi-proc.
2793      - output cleaned
2794      - worked successfully for parallel DIVA
2795    o genmake:
2796      - Adding -platform=SP4
2797      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2798    o Modif. for DIVA:
2799      ctrl_unpack should not be called in intermediate DIVA interval.
2800      (similar thing would apply for active files such as
2801      tbar, sbar, psbar, which should not be reinitialised;
2802      only relevant for ecco-branch)
2803    
2804    checkpoint48h_post
2805    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2806    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2807    o Added SEAICE_initialHEFF to pkg/seaice
2808    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2809    
2810    checkpoint48g_post
2811    --- EOS:
2812    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2813      store total Potential in totPhyHyd for diagnostics & EOS.
2814    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2815    --- Pressure/geopotential gradient:
2816    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2817    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2818      ( changes results of global_ocean_pressure )
2819    o NLFS + z-coord.: add eta*Rho' contribution.
2820    o accurate phiHyd when using interface-W at the middle between 2 centers
2821     ( changes results of ideal_2D_oce )
2822    o includes r* 2nd term in potential gradient.
2823    
2824    checkpoint48f_post
2825    Merging from release1_p12:
2826    o Modifications for using pkg/exf with pkg/seaice
2827      - improved description of the various forcing configurations
2828      - added basic radiation bulk formulae to pkg/exf
2829      - units/sign fix for evap computation in exf_getffields.F
2830      - updated verification/global_with_exf/results/output.txt
2831    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2832      (SBO) core products, including oceanic mass, center-of-mass,
2833      angular, and bottom pressure (see pkg/sbo/README.sbo).
2834    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2835      to avoid negative values in shallow regions.
2836      - updated verification/natl_box/results/output.txt
2837      - updated verification/lab_sea/results/output.txt
2838    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2839    o Added useSingleCpuIO option (see PARAMS.h).
2840    o Updated useSingleCpuIO option in mdsio_writefield.F to
2841      work with multi-field files, e.g., for single-file pickup.
2842    o pkg/seaice:
2843      - bug fix in growth.F: QNET for no shortwave case
2844      - added HeffFile for specifying initial sea-ice thickness
2845      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2846    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2847      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2848    o pkg/seaice:
2849      - adjoint-friendly modifications
2850      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2851    
2852    checkpoint48e_post
2853    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2854    o dynamics: change definition of computational domain & adapt mom_fluxform
2855      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2856    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2857        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2858        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2859        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2860        inverted_barometer solid-body.cs-32x32x1
2861      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2862    
2863    checkpoint48d_post
2864    o in preparation for r*:
2865     a) use pre-computed gradient of hydrostatic potential:
2866        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2867     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2868        => affects results of glob_oce_pressure (different truncation error)  
2869      update output.txt of ideal_2D_oce & global_ocean_pressure
2870    
2871    checkpoint48d_pre
2872    o in preparation for r*:
2873      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2874      pass the 2 comp. of the grad. as arguments to momentum S/R.
2875      but for the moment, only used if it does not change the results.
2876    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2877    
2878    checkpoint48c_post
2879    Modifications in treatment of initial flux forcing controls
2880    to avoid extra storing of flux fields.
2881    
2882    checkpoint48c_pre
2883    o Added tidal_basin_2d experiment (currently 1D!)
2884    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2885    
2886    checkpoint48b_post
2887    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2888     (modification to pressure gradient not yet implemented)
2889    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2890      (for U & V) that are used for vertical advection of momentum.
2891    
2892    checkpoint48a_post
2893    o In preparation for r*, use temp. array to compute vertical transport
2894       in flux-form momentum pkg. => change results of few test-exp.
2895      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2896                        lab_sea, natl_box & plume_on_slope
2897    
2898    checkpoint48
2899    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2900    
2901  checkpoint47j_post  checkpoint47j_post
2902  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2903  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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