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revision 1.194 by dimitri, Thu Oct 23 07:14:48 2003 UTC revision 1.951 by gforget, Sat Feb 2 02:41:43 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/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
8      - introduce isopycnal diffusion coefficient control.
9    o tools/adjoint_options:
10      - additional control vector components.
11    o pkg/mnc: have mnc create marginally meaning full coordinate variables
12      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
13    o pkg/mypackage:
14      - add example of read/write pickup for state-var ;
15      - add entry points to the main code for state-vars diags & write-pickup.
16    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
17      transitions for useExfYearlyFields
18      - add new subroutine that determines the file to read from for
19        use*YearlyFields = .TRUE. and .FALSE.
20      - add a verification experiment to global_with_exf that tests
21        useExfYearlyFields with USE_EXF_INTERPOLATION defined
22    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
23      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
24      subroutines (which could be generated from a template, because they are
25      almost identical), for now they are included in obcs_prescribe_read.F for
26      simplicity
27    o pkg/exf:
28      - add a little more diagnostic to exf_interp_read (in analogy to
29        mds_read_field, can be turned off with debugLevel < debugLevA=1)
30      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
31        ugly but fast by unrolling short inner loops, inserting a unroll=8
32        directive in routine lagran, and splitting a loop and making do while the
33        outermost loop (the latter requires the intoduction of index arrays)
34    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
35    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
36      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
37    o verification/seaice_obcs: updated for restart test and latest options
38    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
39      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
40      for now this is only available for the C-grid code and also within
41      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
42    
43    checkpoint59m
44    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
45      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
46    o gad_som : fix flux output (& diagnostics) to have same units as other  
47      advection scheme fluxes (was previously multiplied by deltaT).  
48    o added verification/seaice_obcs both to test seaice open boundaries
49      and to provide an example matlab scrpt for generating them
50    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
51    o pkg/salt_plume: clean up salt_plume_frac.F to
52      remove redundancy in PlumeMethod 1 and 4
53    o pkg/kpp: added saltplume diagnostics
54    o pkg/obcs and pkg/seaice:
55      - do not set uice and vice to zero when OB*icefile are unspecified
56      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
57      - moved seaice tracer obcs after call to seaice_growth
58    o pkg/salt_plume: added various options for salt plume depth
59      criterion and for vertical distribution of the salt
60    
61    checkpoint59l
62    o pkg/ptracers: new version of ptracers pickup:
63      read meta file and write only fields which are needed to restart.
64      ( same logic as main pickup file ; also using pickupStrictlyMatch )
65    o pkg/seaice:
66      - add timescale for melting due to warm mixed layer as a means of
67        setting SEAICE_availHeatFrac more conveniently
68      - add a CPP-flag/runtime parameter check for flooding algorithm
69      - reformulated availHeat in seaice_growth.F to be independent of AREA
70    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
71      unit changes
72    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
73    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
74      SX vector computer.
75    o pkg/seaice:
76      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
77        seaice forcing fields can now be read only through pkg/exf
78      - removed some unused halos
79    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
80    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
81      or U/VICE from U/VWIND before computing U/VSTRESS
82    
83    checkpoint59k
84    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
85      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
86    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
87      all experiments pass when compile with un-initialised var. checking option.
88    o added pkg/salt_plume
89    o script to test restart (for now, in MITgcm_contrib/jmc_script)
90    o pkg/seaice: new read/write pickup version.
91      read meta file and write only fields which are needed to restart.
92      ( same logic as main pickup file ; also using pickupStrictlyMatch )
93    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
94    o lab_sea.hb87: modify the domain & update output.hb87.txt :
95      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
96      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
97      process. Fixed here by closing the domain at the Northern boundary.
98    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
99    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
100      a set of consecutive levels in/from a 3-D array.
101    o pkg/ptracers:
102      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
103      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
104    
105    checkpoint59j
106    o in pkgs: dic, obcs, offline, rbcs:
107      standard way to compute coeff. for time interpolation between 2 time reccords
108      which retains full precision (& make results less dependent on compiler).
109      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
110    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
111      packages instead of reading ice cover and wind speed separately
112    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
113     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
114      to allow to compile customized code before the update)
115    o cleaning-up:
116      - fix CPP instruction syntax in pkg/obcs
117      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
118        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
119      - fix some threads issue in IO parts.
120    o pkg/dic:
121      - add tons of "_d 0" (--> much better testreports !)
122       and then update outputs of tutorial_global_oce_biogeo
123    o pkg/mom_fluxform:
124      add a special version of momentum advection intended to conserve momentum
125      next to a bathymetry step or a coastline edge. (default = off = #undef)
126    o new read/write pickup version:
127      - for now, only implemented for main (mdsio) pickup file.
128      - write out only what is needed to restart; merge pickup_nh , pickup_ph
129        and main pickup together.
130      - read meta file; read only what is needed to restart; stop if a field
131        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
132        if it make sense (even if the restart is not perfect).
133      - if no meta file, assume that pickup to read corresponds exactly to
134        a pickup that would currently be written.
135      - read pickup written in the old format (until checkpoint59i) if it
136        recognizes an old meta file (no field-list).
137      - add a meta file in exp. which starts from a pickup: 2 cases:
138        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
139         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
140        b) a meta file describing the content of the associated pickup file
141         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
142    o pkg/mdsio & pkg/rw:
143      - new routine to read a meta file ; new set of routine to read
144        Multiple-fields file (with meta file).
145    o added open boundary conditions capability for seaice
146        HSNOW, HSALT, UICE, and VICE
147    
148    checkpoint59i
149    o adjoint:
150      * fix multiDimAdvection adjoint
151        (partial recomputation problem by TAF for fVerT(:,:,kDown)
152        and comlev1 size definition (maxpass vs. max. number of tracers)
153      * verification/global_ocean.90x45x15 adjoint now tests
154        NLFS and multiDimAdvection using DST3 (=30)
155      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
156    o pkg/kpp: add "_d 0" to real constant (if missing);
157      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
158      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
159    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
160      for internal parameters related to restart process (formerly from PARAMS.h)
161      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
162    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
163      as argument. (only atm2d & obcs write_pickup have not yet been updated)
164    o pkg/monitor:
165      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
166      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
167      - account for deep Atmosphere factor and density factor (anelastic)
168    o added open boundary conditions capability for seaice HEFF and AREA
169    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
170      thermodynamics
171      - requires a little reorganization, which affects the testreport results
172        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
173        so that now the conservative form is tested
174      - add a few comments
175    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
176    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
177    o add new diagnostics to seaice: advective, diffusive fluxes (only for
178      multidim-advection, for scheme 2 they are not filled) and transports,
179      thermodynamic growth rates
180    o change units of EmPmR (inside the code, + within coupling interface)
181      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
182      Affects results @ truncation level (cg2d match) and update output of
183       experiments: lab_sea(6), global_ocean.90x40x15(10),
184      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
185      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
186      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
187      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
188    
189    checkpoint59h
190    o pkg/exf:
191      - improve vectorization by moving if-statement out of loops in
192        exf_mapfields, exf_radiation
193      - exf_bulkformulae.F: introduce 2D fields and vectorize code
194    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
195    o testreport:
196      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
197        monitor & update offline_exf_seaice exp. output.
198      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
199    o pkg/seaice:
200      - bug fix in the evp solver: boundary conditions were affected be
201        masking of zMax/zMin (changes results)
202      - minor bug fix in boundary conditions in seaice_calc_strainrates
203        (changes results for no_slip)
204      - seaice_lsr.F: make interpolation of eta dependent on boundaries
205      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
206      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
207        stress formulation and no-slip boundary conditions
208    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
209      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
210    o pkg/seaice: a first HSALT time stepping equation has been checked in
211    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
212      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
213      without requiring DO-IF statements
214    o pkg/thsice:
215      use continuous power-law function for partition of energy between lateral
216      melting/freezing and thinning/thickening ; old code using step function
217      still available with #undef THSICE_FRACEN_POWERLAW
218      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
219    o testreport: change AD testing : check against results/output_adm.txt
220      using same scripts as for forward test.
221    
222    checkpoint59g
223    o adjoint testing: in preparation for changing testreport:
224      - output format: cost and grad written on separated lines
225      - ad output results in directory "results" (instead of "results_ad")
226    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
227    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
228    o pkg/ecco: allow user defined cost function contributions
229    o testreport:
230      Allow to choose (per experiment) the list of tested output variables
231       and the main variable (used to issue a pass/FAIL ) ;
232      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
233      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
234      Also modify printing of summary:
235       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
236       b) echo the list of tested variables in the individual summary.txt of
237          each experiment.
238    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
239      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
240      (but still depend on the tile decompostion of the domain).
241    o pkg/seaice: change a discretization detail to make the B-grid code
242      "more symmetric". This change is likely to remove all "ridges/leads" that
243      where quasi-aligned with the grid in B-grid solutions. It may also be
244      the solution to the stress coupling issues with the B-grid.
245    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
246      remove .cvsignore from input dir. (since testreport no longer run here).
247    o pkg/thsice:
248     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
249     - fix reshaping of sea-ice just after advection:
250       melt all the ice only if ice-volume is too small.
251     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
252       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
253     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
254    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
255      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
256    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
257      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
258      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
259      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
260      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
261      -> update output.txt
262    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
263     this affects truncation error: -> update output.txt of exp:
264      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
265      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
266    
267    checkpoint59f
268    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
269    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
270      a bounded range (in forward mode)
271    o pkg/ecco, ctrl, autodiff and mom_common:
272     internal parameter controls, completements of implementations
273    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
274    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
275      (not seem any difference in testing results).
276    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
277       at face corners.
278    o pkg/generic_advdiff:
279     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
280      loop range indices for computing vertical advection tendency
281      and do the calculation in the interior only (no overlap) ;
282      for now, only implemented for SOM advection (to save CPU time).
283     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
284    o exch2 adjoint
285      First set of changes:
286      - add exch2 hand-written adjoint templates
287      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
288        This will require cleanup in pkg/autodiff/*.F
289        (changed routines currently kept separate in verif. code/)
290      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
291        that used to hide exch2 or cubed-sphere specific code
292        (commented via 'cph-exch2')
293    o pkg/seaice
294      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
295    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
296       output of global_ocean.cs32x15.thsice .
297    
298    checkpoint59e
299    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
300      for B-grid vector (not yet tested) and C-grid vector (<- only used
301      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
302    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
303      (#ifdef ALLOW_SALT_PLUME)
304    o gather_2d/scatter_2d: removed halo regions
305    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
306      scheme and the corresponding test case (under front_relax dir). For now,
307      only available with Skew-flux form and not yet tested in realistic set-up.
308      adjoint: store directives updated, but gradient checks deteriorated,
309      so maybe GM/Redi adjoint is now broken.
310    o seaice adjoint
311      * add AREA, HEFF, HSNOW as control variable
312        (should not change lab_sea results)
313      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
314    o pkg/seaice:
315      * added computation of saltFlux in seaice_growth;
316        For time being, sea ice salinity is assumed constant
317        contribution of snow flooding to freshening of sea ice is neglected.
318        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
319        defaults to 0.0 in order to maintain backward compatibility.
320        Typical values for SEAICE_salinity are 4 to 10 g/kg.
321      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
322      * added SEAICE_availHeatFrac, which specifies fraction of surface level
323        heat content used to melt or grow ice
324      * commented out cap of HICE: it helps keep ice thinner
325      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
326      * applied OBCS T/S mask to HEFFM sea ice mask
327    
328    checkpoint59d
329    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
330     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
331     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
332    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
333     and change default value of parameter "GM_Small_Number";
334     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
335       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
336       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
337    o pkg/ecco: cost function when applying pkg/smooth to controls
338    o pkg/ctrl: add forcingPrecond run time parameter
339    o pkg/seaice:
340     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
341     - fix bug in metric terms of u-equation in LSR solver (implicit part),
342       changes verification/lab_sea
343     - rearrange implicit part of u-equation in LSR solver to make it easier to
344       read, understand, and debug. This causes changes at the truncation level.
345     - fix (serious) bug in the boundary conditions (sign error in the implicit
346       part) of the LSR solver. Changes all LSR results.
347     - fixed problem with HSNOW initialization to avoid thick snow when AREA
348       is initilized with small values - does not change lab_sea results.
349     - added HsnowFile initialization capability
350    o pkg/smooth: addition to model/src and pkg/ctrl so allow
351     initialization of pkg/smooth and application to control vector
352    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
353    o dependencies: pkg/profiles requires pkg/cal
354    o pkg/profiles:
355     - added option ALLOW_PROFILES_GENERICGRID
356         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
357         that interpolation information (grid points and coefficients) is provided
358         within the netcdf input files.
359         -> sample matlab scripts can be found in MITgcm_contrib/gael
360         that allow you to prepare netcdf input files.
361     - also modified: cleaner include statements, cleaner error print statements,
362       cleaner stops when error, and more tests of the netcdf input files consistency.
363    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
364    o pkg/seaice:
365     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
366       requires a new routine: seaice_diagnostics_fill.F
367     - make sure that seaice does not move if not forced (pressure replacement
368       method, Hibler and Ip, 1995), changes results
369     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
370     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
371       It is turned off by default (=-1.), because it changes the results.
372     - make it possible to read AREA from a file, too.
373    
374    checkpoint59c
375    o add S/R and diagnostics for oceanic mixed-layer depth
376    o move GMRedi call after all vertical mixing schemes (including KPP)
377    o pkg/thsice:
378     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
379      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
380    o pkg/obcs:
381     - bug fix for balance code
382    o pkg/seaice:
383      - allow values of SEAICE_elasticParm > 1
384      - add new parameter SEAICE_evpTauRelax as an alternative
385        to SEAICE_elasticParm
386      - make lsr boundary conditions free slip (by default), changes result
387      - add code for no slip boundary conditions for lsr
388      - set minimum of zeta to zero (and not 4e8) (changes results)
389      - add a cap on AREA after advecting AREA if seaice_growth is not called
390    o change calculation of Visbeck K:
391      - no longer depend on tapering scheme; instead, compute slope (limited
392        by GM_maxSlope). this is equivalent to what was comuted before with
393        clipping or linear tappering.
394      - fix vertical averaging (wrong by 1/2 level)
395      - leave the old version (but will not be maintained) within
396        #ifdef OLD_VISBECK_CALC / #endif
397      - update output of exp. ideal_2D_oce
398    o change error catch in calc_r_star to improve vectorization
399    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
400      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
401    o adjoint:
402      Re-organized adjoint checkpointing according to Matt Mazloff
403      (but with modifs/completions/cleanups)
404      Storing is now bundled into large arrays to optimized I/O
405      (and second step in cleanup of the_main_loop)
406    
407    checkpoint59b
408    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
409      - export/import (between ocean & coupler) fields needed for ocean DIC.
410    o pkg/seaice:
411      - get rid of three more exchanges seaice_calc_viscosities (required
412        different loop boundaries in seaice_lsr and seaice_ocean_stress)
413      - bug fix in seaice_ocean_stress (update of lab_sea required)
414      - reduce loop boundaries to necessary minimum also in seaice_evp
415      - go back to the old way of computing deltaC/Z as the adjoint likes that
416        better
417    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
418      passive tracer to an Age Tracer) + update output.txt
419    o pkg/exf:
420      - implement A-grid / C-grid selection for wind-stress input files.
421      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
422      for now, in exf_bulk_largeyeager04.F only :
423      - change implementation for case where windspeed + 2. components wind-stress
424        are read-in. AND use rhoConstFresh to convert evap.
425    o pkg/seaice:
426      - use correct EXCH_UV for wind-forcing (on A-grid).
427      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
428        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
429    o pkg/exf:
430      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
431      EXF_INTERPOLATION:
432      - merge global_with_exf/code version of exf_interp_read.F
433        to the main code ;
434      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
435        reading the file ; Important: This options needs to be defined to recover
436        previous code.
437        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
438      - no longer loose real*8 precision along the way when using exf_iprec=64.
439    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
440      - change discretisation of evp-solver in order to avoid another exchange
441        (changes lab_sea) and clean up a little
442      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
443        help the adjoint (this also changes the results slightly)
444      - add a few "_d 0" where they had been missing in seaice_evp.F
445      - cleaning up: remove unused seaice_calc_rhs.F
446    o pkg/exf: some cleaning-up:
447      - change various "constants" into runtime parameters
448      - cleaned-up Large&Yeager04 routine which should eventually
449        replace exf_bulkformulae.F (changed names of S/R and CPP)
450        and merged various ALLOW_ATM_WIND options
451     only used with thsice pkg (in thsice_get_exf.F):
452      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
453        which are used when useStabilityFct_overIce=TRUE (= the default)
454      - change default values of ice & snow emissivity and scale downward LW
455        by ice & snow emissivity.
456    o pkg/thsice:
457     fix few little problems, in thsice_calc_thickn.F:
458      - growth vertically (and not laterally) if iceFrac == iceMaskMax
459      - melt only laterally if hIce < hThinIce (as the comments say)
460      and in thsice_extend.F:
461      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
462      - start to form ice as soon as the minimum ice-volume is reachable.
463     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
464      and cpl_aim+ocn
465    o pkg/kpp
466     - move computation of surface related input fields to KPP into a new
467       subroutine kpp_forcing_surf.F
468     - remove wrong (within bi,bj loops) EXCH calls.
469     - little cleaning (add argument myThid in last position, cvs header ...)
470     - for now, fix conservation problem by exchanging KPPviscAz (may not
471       be the best fix)
472    o pkg/seaice
473     - check for inconsistent evp parameter/cpp-flag combination
474     - remove leftover errIO flat for obsolete name list error handling
475    o OpenAD
476     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
477    
478    checkpoint59a
479    o pkg/seaice: some parameter clarifications and a little bit of clean up
480    o pkg/thsice: rename run-time parameters:
481       himin       -> hIceMin
482       himin0      -> hThinIce
483       hihig       -> hThickIce
484       i0          -> i0swFrac
485       transCoef   -> bMeltCoef
486       frac_energy -> fracMelting
487      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
488       with default values (for now) that do not change the results.
489      remove old version of thsice vars advection in pkg/seaice.
490    o in FFIELDS.h:
491      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
492      - make pLoad & sIceLoad always available (but still only used if
493         ATMOSPHERIC_LOADING is #define).
494    o pkg/kpp: replaced _KPP_RL with _RL
495    o bug fixes for vertical diffusivity computations when both KPP and
496        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
497        are no longer updating the vertical diffusivity array
498        (passed as argument) but are (re-) setting those arrays.
499    o pkg/seaice: fix bug in evp solver, while doing that
500      - change (improve?) discretization of stress computations for both
501        cgrid-lsr and evp solver
502      - add a new routine to compute strain rates
503      - the above changes lab_sea results
504      - add no slip conditions for evp solver (off by default), lsr-version
505        may follow
506      - fix exchange for shear at Z-points (does not change lab_sea)
507      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
508        (to force the user to pick a time step since there is not "safe" way
509        of choosing it)
510      - add principal stress diagnostics
511      - rearrange fields for evp a little to avoid having to call a: too many
512        exchanges and b: exchanges for stress trensor components which we do
513        not have.
514      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
515        of evp, complete rewrite for lsr case (latter is does not yet work
516        in all cases)
517    o pkg/kpp: add code to have mixing in shelf ice caverns
518      - add myThid to all kpp routines (long overdue)
519    
520    checkpoint59
521    o pkg/exf:
522      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
523        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
524      - move exf header files from lower_case.h to UPPER_CASE.h ;
525        add missing cvs Header & Name
526      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
527      - add namelist param. selectStressGridPosition, exf_monFreq
528      - retire many _CLIM routines, and remove data.exf_clim
529        + params moved to data.exf
530        + climsst, climsss now handled by exf_set_gen, i.e.
531          climss?period=0 refers to constant field,
532          climss?period=-12 to monthly forcing
533      - split up namelists in data.exf
534    o pkg/seaice:
535      - remove seaice_exch and seaice_exch_uv
536      - remove superfluous exchange of theta
537      - add myThid to seaice_budget_ocean/ice
538      - add new interface for atmospheric wind forcing (C-grid only)
539        + new routine
540        + two new field (taux, tauy for stress over ice)
541        + removed one global field (DAIRN) for C-grid case only
542    o pkg/thsise
543      - 2nd set of modifs for thsice adjoint in conjunction with exf
544    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
545    
546    checkpoint58y_post
547    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
548      vertical diffusivity, similar to that in MOM4; turned on using
549      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
550      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
551    o Added capability for 3D specification of background vertical diffusion
552      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
553      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
554      "data" file that contains the 3D vertical diffusivity coefficients.
555    o ice dynamics (pkg/seaice) with thsice thermodynamics:
556      - add code within pkg thsice to advect & diffuse sea-ice fields
557      similar to (and will replace) what has been added in  seaice_advdiff.F,
558      but: - conserving Mass, Heat & Salt.
559           - better when using non-linear advection scheme (not yet fully tested)
560           - can also be used in atmospheric set-up (for now, only the diffusion).
561    
562    checkpoint58x_post
563    o IO option for global-file compact format:
564      - add options when generating topology (utils/exch2/matlab-topology-generator)
565      - add I/O capability (pkg/mdsio).
566      - adapt utils/matlab/rdmds.m to read this format.
567      for now long-line format not yet supported by pkg/mdsio (& exch2).
568    o shelfice: add a few diagnostics
569    
570    checkpoint58w_post
571    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
572      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
573      (and replace horiVertRatio in NH code).
574      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
575                         and tutorial_plume_on_slope (sensitive to truncation)
576    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
577      directly to drive seaice model (C-grid only)
578    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
579     - reintroduce computation of wind from stress,
580     - compute tau (in exf_bulkformulae.F) from windstress averaged to
581       mass points to avoid tau = 0
582     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
583    o rdmnc.m: make it work with "global" files created with gluemnc
584    o rdmnc.m : some improvements in dealing with singleton dimension
585      (tested on all testreport mnc output files).
586    o genmake2: disable pkg/profiles if netcdf test fails.
587    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
588    o move call to cal_readparms up to make calendar parameters/variable available
589      to all packages
590    
591    checkpoint58v_post
592    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
593      useDynP_inEos_Zc tested.
594    o pkg/exf: changes to properly interpolate/mask/scale initial fields
595    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
596      and portions thereof.  See read_cs.txt for description and examples.
597    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
598      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
599      following the great-circle arc between those 2 points.
600    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
601      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
602    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
603     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
604     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
605     - still needs work (not working with some options ; efficiency to improve)
606       and serious testing.
607     - use this scheme for temperature & salinity in 2 advection test exp.:
608       advect_xy & advect_xz, respectively.
609    
610    checkpoint58u_post
611    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
612    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
613    o testreport: add option "-skipdir" to skip some test.
614    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
615      momentum calculation.
616    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
617    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
618      remove checkpoint.F and the_correction_step.F (no longer used);
619      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
620    o add option (linFSConserveTr) to correct for tracer source/sink due to
621      Linear Free surface
622    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
623    o pkg/thsice: fix reading mnc-pickups
624    
625    checkpoint58t_post
626    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
627    o pkg/mdsio:
628     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
629       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
630       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
631     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
632     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
633       either MDS_READ_FIELD or MDS_WRITE_FIELD )
634     - new S/R (to replace MDSWRITEMETA), which allows to write more
635       informations (variable names, time ...) to meta files.
636     - modify rdmds.m to give back the meta file content.
637    o pkg/diagnostics: change vertical interpolation to be safer, and more
638       flexible (define p-levels to interpolate to in data.diagnostics);
639      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
640       diagnostic pointer.
641    o pkg/seaice: more cleaning up of seaice_growth, added many comments
642    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
643    o fix multi-category seaice:
644     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
645       SEAICE_MULTICATEGORY
646     - fix short wave heat flux
647    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
648       and allow to use EVP solver. Change forward lab_sea: test both EVP
649       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
650    o Initial check-in of lab_sea adjoint
651      (very similar to natl_box_adjoint/code_seaice)
652      * used C-grid and EVP solver
653      * used KPP, GM/Redi
654      * uses inAdExact=.TRUE.
655      * gradient checks fail for both ADM and TLM
656        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
657        f.d. gradients actually seem more problematic than ADM, TLM gradients;
658        issue is related to forward mismatch between g77 an ifort
659    o pkg/seaice: overhaul of thermodynamics
660     - growth.F and groatb.F are replaced by new routine seaice_growth.F
661     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
662     - move a few global fields out of SEAICE.h into seaice_growth.F and
663       make them 2D (FICE/QNETO/ ...)
664     - remove FO (it is the same as QNETO)
665     - introduce a few local fields to avoid modifying external fields such
666       as atemp, etc.
667    
668    checkpoint58s_post
669    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
670      changed exf_set_gen.F so that
671        genperiod=0 means input file is one time-constant field and
672        genperiod=-12 means input file contains 12 monthly means
673    o CG2D: use pre-computed solver main-diagonal (stored in common block);
674      this affects truncation error ; generate new output file for exp. which
675      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
676        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
677        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
678        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
679        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
680        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
681    o start implementation of deep-atmosphere and anelastic formulation
682    o verification: remove 2nd copy of input files and use script "prepare_run"
683      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
684    o mom_common/vecinv/fluxform: fix a few initialisation isssues
685    o profiles: fix for multithreaded case
686    
687    o diagnostics: rename few diags:
688      s/'PRESSURE'/'RCENTER '/g
689      s/'TICE    '/'oceFreez'/g
690      s/'TAUX    '/'oceTAUX '/g
691      s/'TAUY    '/'oceTAUY '/g
692      s/'SWFLUX  '/'oceQsw  '/g
693      s/DIFx/DFxE/g
694      s/DIFy/DFyE/g
695      and add few ocean-forcing diagnostics:
696      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
697    o modifications to pkg/seaice/growth.F and budget.F, which change results of
698      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
699      as actual snow thickness.  It now refers everywhere to effective snow
700      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
701    
702    checkpoint58r_post
703    o modifications to pkg/seaice/growth.F, which change results of
704      lab_sea experiment: fixes pertain to melting snow over open water, to
705      masking EVAP under sea ice, and to using the correct AREA variable for
706      computations of EVAP, PRECIP, HSNOW, and GHEFF
707    o add ability to read bathy, salt, and theta using MNC (off by def)
708    o add flooding algorithm and advection of HSNOW for pkg/seaice;
709      both are turned off by default and do no change any results
710    o seaice advection with pkg/thsice: a step toward the use of non-linear
711      advection scheme, but #ifdef or commented out for now (requires more EXCH).
712    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
713      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
714      in natl_box (affects results @ truncation level: update output.txt)
715    o multi-threading and IO:
716      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
717      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
718        (needed to work with SingleCpuIO): tested in all verif. exp.
719    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
720      affects the results (but none of the verification test uses this scheme).
721    o Adding some pkg/diagnostics capability to pkg/seaice
722      (will certainly be subject to changes)
723    o ctrl: adding new control variables:
724      lwflux, lwdown, evap, snowprecip, apressure, runoff
725    
726    checkpoint58q_post
727    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
728      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
729      high_res_cube configuration by 4% on Columbia.
730    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
731      add (in global_with_exf/code) a version of EXF_INTERP_READ without
732      dynamical allocation (seems to work in multi-threaded).
733    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
734      single CPU io) so that TAF does not have to see EESUPPORT.h
735    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
736    
737    checkpoint58p_post
738    o obcs: stop if obcs is used with useCDscheme = .true.
739    o shelfice:
740     - fix a sign error so that no slip at shelfice interface works
741     - remove stop for combination non-hydrostatic code and shelfice. That does
742       not mean, that the results are correct, but at least they are numerically
743       stable
744    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
745    o added adjoint exch routined for all exch*3d* routines
746      and updated flow directives
747    
748    checkpoint58o_post
749    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
750      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
751    o change controling S/R for writing pickup file (new S/R do_write_pickup)
752      and clean-up reading/writing of pickup files.
753    o fix local version of read/write pickup (NH part) in rotating_tank/code
754    o simplify EXCH interface:
755     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
756     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
757    o added the regrid package
758    o shelfice:
759     - add a simple boundary layer scheme to reduce noise
760     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
761    
762    checkpoint58n_post
763    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
764       local variable (not in common block).
765    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
766      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
767      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
768        to work with SingleCpuIO.
769    o add "_d 0" to real constant of pkg/cfc subroutines ;
770       update exp. cfc_exemple & tutorial_cfc_offline output files.
771    o multi-threading and IO:
772      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
773        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
774      - barrier before and after reading.
775      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
776      - avoid using MDS_WRITELOCAL for LAND pkg output.
777      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
778        common-block variables ; Allows multi-threading with master-thread IO.
779    o change default MAX_NO_THREADS from 32 to 4 ;
780      and stop cleanly when MAX_NO_THREADS is too small.
781    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
782    
783    checkpoint58m_post
784    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
785       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
786    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
787       keep global_ocean.90x40x15 (for AD testing) with former secondary test
788       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
789    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
790        add MITgcm_tutorials (= code + all the tutorials)
791    o ecco, option to compute cost for total ssh (mean+anom)
792    o consistent with addition of ptracer and ssh in pkg/profiles
793    o profiles: adding ptracer and ssh
794    o testreport: change multi-test output-file name
795      (from output.txt.{name} to output.{name}.txt)
796    o profiles: now ok for mutli-tiles case
797    o seaice: add 4 parameters for different advection schemes for area,
798      (effective) seaice thickness, enthalphy, and snow height. Their default
799      is the standard parameter SEAICEadvScheme
800    o calc_gw:
801     - add cosFacU in zonal viscous flux (harmonic.visc.).
802     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
803       of tutorial_plume_on_slope.
804    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
805    o calc_gw: true flux-form, account for horizontal grid spacing.
806      update rotating_tank results, but not plume_on_slope (affected at
807      truncation level, 11 digits).
808    
809    checkpoint58l_post
810    o calc_gw:
811     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
812     - remove side-drag for now (need to fix it); update plume_on_slope results.
813     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
814    o commit code to make SST/SSS weights spatially variable
815      (based on either variable in-situ or variable initial T/S weights)
816    o pkg/ecco:
817      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
818        now based on horizontally varying weights wthetaLev, wsaltLev
819      * cost_averagesflags now returns year indices in addition to day, month
820      * sflux balance is performed on annual basis
821        (sflxumm, sfluxmm2, bal_sfluxmm)
822      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
823        including separate counting and multipliers
824    o pkg/rbcs
825      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
826    
827    checkpoint58k_post
828    o testreport:
829     - always build in dir. "build" (if not there, mkdir build instead of building
830       & running in input)
831     - run in dir run (if it exists), in build otherwise.
832     - call prepare_run (if input/prepare_run exists)
833     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
834    o pkg/exf modifications to interpolation and rotation routines for more
835       reasonable treatment of North Pole singularity: for tracers North Pole
836       value is set to northernmost zonal-mean value, for zonal velocity it is
837       set to zero, and for meridional velocity it is set to northernmost value.
838    o pkg/exf/exf_check_range.F
839     - add tile index to diagnostics and move stop statement to the very
840       end of the routine.
841    o pkg/diagnostics: (diagnostics_main_init.F)
842      define title of isomorphic variables according to the current config.
843    o pkg/thsice with pkg/seaice dynamics:
844    - fix domain of computation (interior only, required for exf) and do exchanges
845    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
846    o towards a standard way of dealing with multi-threading in MONITOR
847      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
848    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
849       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
850    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
851    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
852    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
853       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
854    o tracer advection:
855     - clean-up and simplify calc_common_factors.F
856     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
857       advection subroutine (but still not used within DST advection S/R)
858    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
859    
860    checkpoint58j_post
861    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
862      from file (collects calls previously in FORWARD_STEP)
863    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
864    o adjoint store dir. adjusted accordingly
865    o genmake2
866      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
867    
868    checkpoint58i_post
869    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
870      on wind stress (SEAICEstressFactor defaults to 1.)
871    o Total number of Timers is finite (<=40): comment out 2 non-essential one
872      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
873    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
874      on CS-grid: no longer loosing mass.
875    o exf & curvilinear-grid: no longer modify longitude xC & xG.
876    o pkg/ggl90: fix sloppy output and fix a bug
877    o pkg/seaice: added SEAICEuseEVPpickup parameter
878      - Set to false in order to start EVP solver with
879        non-EVP pickup files when using SEAICEuseEVP
880      - fix sign error in diffusion in seaice_calc_rhs
881    
882    checkpoint58h_post
883    * Modifications for bottom topography control
884      o replace hFacC by _hFacC at various places
885      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
886      o add non-self-adjoint cg2d_nsa
887      o update autodiff support routines
888      o re-initialise hfac after ctrl_depth_ini
889      o works for 5x5 box, doesnt work for global_ocean.90x40x15
890    * Adding verification for 5x5 box (4-layer) bottom topography control
891    
892    checkpoint58g_post
893    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
894       used for mean seasonal cycle, mean diurnal cycle); add an example
895       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
896    o pkg/ggl90:
897      - add parameter (minimum surface kinetic energy)
898      - fix bug (avoiding division by zero)
899    o couple pkg/thsice to pkg/seaice:
900      - modify advection in seaice to accomodate new scalar fields to be advected
901      - only muliDimAdection scheme work with seaice/thsice
902      - mapping of thsice-variables to seaice-variables, back and forth
903      - does not break the verification experiments, but does not give the
904        desired results either
905    o pkg/seaice
906      - make (default) second order advection a bit less confusing?
907    
908    checkpoint58f_post
909    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
910      to pkg/seaice):
911      - new routines thsice_map_exf and thsice_get_exf provide the interface
912      - add an additional formal parameter to thsice_solve4temp
913    o pkg/exf:
914      - add new fields wspeed, snowprecip (to be able to couple to thsice)
915      - correct Stefan-Boltzmann constant
916      - new parameter for longwave surface emittance
917      - separate some stuff from exf_bulkformulae into new routines  
918        exf_radiation, exf_wind
919      - add new parameters and constants: longwave emissivity for ocean, ice
920        and snow, evaporation parameters over ice
921      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
922        either wind from stress or stress from wind
923    o pkg/thSIce:
924    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
925    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
926       and THSICE_CALC_THICKN
927    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
928    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
929      to make debugging easier.
930    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
931    o pkg/bulk_force:
932      - clean-up comments and parameters ;
933      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
934    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
935      generate new output for test-experiment: aim.5l_cs.thSI
936    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
937      testreport accordingly
938    
939    checkpoint58e_post
940    o SEAICE_CGRID adjoint done
941    o R_STAR adjoint implemented.
942      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
943      * need to sort out init. of h0facc, etc.
944    o Make pkg/profile fully independent of ecco,cost, etc. stuff
945      to be able to use it in pure forward.
946    
947    checkpoint58d_post
948    o upgrade simple test-experiment to tutorial example:
949     step.1: duplicate the experiment and (step.2) will remove the old copy.
950      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
951      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
952      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
953      tutorial_global_oce_biogeo    <- copy of dic_example
954      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
955      tutorial_plume_on_slope       <- copy of plume_on_slope
956      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
957      tutorial_global_oce_optim     <- empty for now (David ?)
958      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
959     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
960    o correct a sign problem in cost_scat.F
961    o obcs and ptracers: fix boundary conditions for advections schemes
962      with larger stencil
963    o thsice adjoint: start
964    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
965      completeness
966    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
967      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
968    o ptracers adjoint:
969      * avoid extensive recomputatations
970      * fix missing re-init. of gptr (missed by TAF)
971    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
972      me to turn off the excessive output to STDOUT that this package produces
973    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
974      and add those terms in Vector-Invariant formulation.
975    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
976      if the control period (xx_hfluxperiod etc) is 0
977    o in profiles pkg, clean routines and fix details
978    o in ecco pkg, reading ssh data:
979      fix problem in case the model does not start at iter0=0
980    o fix mnc-pickup/restart for ptracers
981    o new package prifiles:
982      code to compute profile-based cost by Gael Forget
983      (modifs in ecco, ctrl, autodiff)
984    o Benign bug fix in initialization (spotted by M. Mazloff) of
985      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
986    
987    checkpoint58c_post
988    o adjoint: finish NLFS adjoint and provide reference output in
989      verification/global_ocean.90x40x15/results_ad_nlfs
990    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
991      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
992      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
993      with SEAICE_CGRID defined.
994    o move calendarDumps from "data" to "data.cal" and clean-up the code
995      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
996    o add useEXF & useCAL flags (for now, set in hard-coded way)
997    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
998      (were missing in NH mode, and wrong in quasihydrostatic mode).
999      waiting for Chris updated version of calc_gw to add those CALLs.
1000    o fix bug in quasihydrostatic S/R ;
1001      add a test for this option: global_ocean.90x40x15.qshyd
1002    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1003      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1004    o add on/off flag useOffLine for package OFFLINE
1005    o seaice:
1006      - modify advection so that it works also on the C-grid
1007      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1008        problem in multi-tile runs with C-grid
1009      - add flags for clipping ice velocities and/or masking solver forcing
1010      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1011        C-grid solver
1012      - added a few comments to seaice_diffusion.F
1013      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1014        are now exclusive)
1015      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1016        required re-ordering the code a little:
1017       + make DAIRN global variable (defined in SEAICE)
1018       + move computation of the viscosities eta and zeta into a new separate
1019         routine (because I need to recompute them in seaice_ocean_stress.F)
1020    
1021    checkpoint58b_post
1022    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1023      update output.txt of exp. aim.5l_cs.thSI
1024    o various mnc cleanups and improvements:
1025      + shrink lookup tables by factor of ~4
1026      + better error reporting when running out of lookup space
1027      + able to handle longer path/file names (up to 500 chars)
1028    o adjoint:
1029      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1030      - TBD: "hidden" mom_vecinv recomp. in dynamics
1031    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1032     (allow to differentiate between forcing components using new integer flags:
1033      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1034     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1035    o ecco
1036      - enable trend removal from SSH anomaly obs.
1037    o adjoint
1038      - a fix for PmEpR when #undef EXACT_CONSERV
1039      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1040      - try to fix "hidden" recomp. in forward_step for NLFS
1041        (NLFS seems broken sometimes after I checked it in)
1042    o seaice:
1043     - add c-grid version of the dynamic solver:
1044       + three new routines that are the c-grid substitute lsr, dynsolver
1045         and ostres
1046       + put a few fields that were local to dynsolver into global common
1047         blocks, so that I can move the computation of stresses etc into
1048         seaice_lsr (saves coding but may break the adjoint).
1049     - replace more hardwired parameters by runtime parameters
1050     - add ice masks that mask the rhs of the implicit solvers where there
1051       is no ice (commented out in seaice_dynsolver, because i am not sure
1052       if this works properly), eventually this should replace the clipping
1053       of ice velocities in seaice_dynsolver to +/-40cm/s.
1054    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1055      include it only where its needed
1056    o move balancing of fluxes before the call of external_forcing_surf
1057    o seaice:
1058      - correct units of turning angles (now they are really in degrees)
1059      - move computation of GWATX/Y out of main routine into dynsolver
1060      - initialize GWATX/Y in seaice_init
1061    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1062      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1063    o seaice: add runtime flags for turning angles (default to zero)
1064    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1065      and trend from exf forcing and ctrl control adjustments
1066    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1067      (since checkpoint57x_post)
1068    o change the default rotation period to 86164.s = the Earth rotation
1069    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1070      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1071    o seaice advection: add code for choosing between the default (2nd order
1072      central differences) and multiDim advection schemes provided by
1073      pkg/generic_advdiff
1074    o seaice:
1075      - removed all references to SEAICE_GRID.h fields from
1076        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1077        (cubed-sphere configuration will change a little)
1078      - grid computations in seaice_init are obsolete now.
1079      - cleaned up code a little so that is easier to read (hopefully).
1080      - added new (better?) discretizations of default advection and diffusion
1081        (turn on with SEAICEuseFluxForm)
1082      - replace 1 in 3d global fields by kSurface in growth.F
1083      
1084    checkpoint58a_post
1085    o seaice:
1086      - bug fix in advect.F
1087    o shelfice:
1088      - separate shelfice load anomaly from pload (breaks with time
1089        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1090        Its default is 0., but it may be computed more cleverly from (unknown)
1091        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1092        done offline. A good approximation of the pressure load anomaly is
1093        necessary to avoid large initial adjustment processes underneath
1094        deep-reaching shelfice.
1095      - small fix in ISOMIP shelfice_thermodynamics
1096      - add more sophisticated thermodynamics of Hellmer (1989), this is
1097        now the default
1098      - give a few constants more intuitive names
1099    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1100      if bulk formulae are used in long integration (especially EmPmR). Turn
1101      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1102      if balancePrintMean, the imbalance that is substracted is printed to
1103      STDOUT.
1104    o fix bug (typo) in obcs_apply_eta.F
1105    o add a new package shelfice which enables us to model the circulation
1106      underneath shelf-ice with draughts of hundreds of meters.
1107     - works
1108     - to do: + include improved thermodynamics
1109              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1110                instead of new field kTopC
1111              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1112                instead of new field R_shelfIce and new code in ini_depth.F
1113                and ini_mask_etc.F?
1114              + adjust vertical mixing schemes?
1115    o seaice pkg:
1116     - add a cpp-flag to include a simple formula for a salinity dependent
1117       freezing point of sea water at the surface
1118     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1119       meridional stresses are now different (and hopefully correct)
1120    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1121       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1122       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1123    o pkg/diagnostics: add options and parameters for regional-statistics
1124       diagnostics ; define regions by reading a region-mask from a file
1125       (might add other options later)
1126    o pkg/bulk_force:
1127     - add option and parameters to use AIM surface-flux formulae.
1128     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1129       others forcing fields (defined in PARM05, parameter file "data") are loaded
1130       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1131     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1132     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1133     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1134       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1135     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1136    
1137    checkpoint58
1138    o add "--embed-source" option to genmake2 which, when the supporting
1139      tools can be compiled (as determined by genmake2) will turn on the
1140      embed_files package which then embeds the entire MITgcm source code
1141      (*.[fFhc] + Makefile) used for the build within the executable
1142      - requested by CNH but off by default
1143      - adds a paltry <9MB to the mitgcmuv executable in most cases
1144      - only writes the output when useEMBEDSRC in eedata is true
1145    o clean up 3-dim. relaxation codes:
1146      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1147      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1148      * Thanks to Tom Haine for testing!
1149    
1150    checkpoint57z_post
1151    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1152      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1153    o fix the pickup behavior for obcs in combination with ptracers
1154    o fix a bug in ptracers_external_fields_load
1155    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1156      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1157    o transfered surface NH pressure to eta field (if exactConserv).
1158    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1159         and update lab_sea output.txt file.
1160    o completing 3-dim. relaxation code: additional term
1161         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1162      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1163      * At compile time, in "EXF_OPTIONS.h" set
1164          #define  ALLOW_CLIMTEMP_RELAXATION
1165          #define  ALLOW_CLIMSALT_RELAXATION
1166      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1167          tauThetaClimRelax3Dim = 15552000.0,
1168          tauSaltClimRelax3Dim  = 15552000.0,
1169      * 3 cases:
1170          1) Use a constant-in-time 3-dim. field
1171          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1172          3) Real-time relax. to time-evolving prescribed field
1173    o Adding Laplacian-type smoothness constraint on
1174      initial and boundary (forcing) controls (ic, bc)
1175      * enable at compile-time via
1176        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1177      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1178      * Absolute scale somewhat unclear so far
1179      * no area weighting was included since no other cost term does so far
1180    
1181    checkpoint57y_post
1182    First step for a NLFS adjoint
1183    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1184    o new init. routines for calc_r_star, calc_surf_dr
1185    o still need to deal with ini_masks_etc
1186    o testreport seemed happy
1187    checkpoint57y_pre
1188    
1189    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1190    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1191    o add new offset feature to offline pkg (plus minor cleanup)
1192    o cfc fixes for final year of integration
1193    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1194      be in GCHEM_OPTIONS).
1195    
1196    checkpoint57x_post
1197    o fix testreport Pb in multiple test experiment.
1198    o cleanup our namelist syntax in verification:
1199      - make it more F95 standards compliant (some work still needed)
1200      - allows the vast majority of our tests to work with gfortran
1201    o Non-Hydrostatic:
1202     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1203     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1204    o Allow to apply AB on T,S rather than on AB(gT,gS):
1205     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1206     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1207       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1208     - need a "clever" read_pickup to restart from the other AB formulation
1209    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1210    o remove some unused variables (reduces number of compiler warnings)
1211    o adjoint
1212      * Disable useVariableViscosity for adjoint for time being
1213        (there are a number of extensive recomputations)
1214      * Initialize certain variables needed for adjoint
1215    
1216    checkpoint57w_post
1217    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1218                 fix the singleCpuIO RS version of MDSWRITEFIELD
1219       and add a WARNING if using globalFiles=T with multi-processors.
1220    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1221      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1222    o tracer advection scheme:
1223      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1224       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1225       was not very convenient).
1226      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1227       (further tests needed for the implicit DST & Flux-Limiter schemes).
1228    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1229      and sRef for convenience, handy, when you want to initialize
1230      ptracers in a large domain with a constant non-zero value. Also,
1231      untangle ptracers_init.F a little.
1232    
1233    checkpoint57v_post
1234    o change dome exp. to use variable viscosity in side-drag terms.
1235    o remove all the files from the cfc_offline test since they are now
1236      incorporated into tutorial_cfc_offline which has been producing
1237      identical results for a few days of testing
1238    o add new parameter: sideDragFactor to enable half-slip-side BC
1239      and change side-drag S/R to use viscosity from mom_calc_visc
1240      (can switch back by setting sideDragFactor=0.); affects results at
1241      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1242       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1243    o vorticity & strain are now computed without masking, to account for
1244      no-slip-side BC in variable viscosity calculation ; mask is applied
1245      anyway later on, before computing advection/coriolis terms.
1246    o modify exp4 to test new obcs support for reading from external files
1247      and for passive tracers
1248    o fix behavior of ptracers_monitor when monitor output is written to a
1249      netcdf-file; still not independent of monitor.F (writes in the same
1250      file).
1251    o change default value of tRef (put a uniform, meaningful value for ocean
1252      & atmos) and initialize sRef (was missing, as Martin mentioned).
1253    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1254      to be proportional to enstrophy dissipation length.  Thus,
1255       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1256      This is now consistent with Smagorinsky and with the manual.
1257    
1258    checkpoint57u_post
1259    o OBCS and PTRACERS: add open boundary support for passive tracers
1260      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1261        OB-values from file; this is not different from the way theta and salinity
1262        are treated
1263      - however, Orlanski-radiation conditions are not supported, and the model
1264        will stop if you use pTracers and Orlanski at the same time.
1265      - beefed up the rountine obcs_external_fields_load: now only those open
1266        boundary values are overwritten with values from files for which there
1267        are really files, otherwise the OB-fields remain untouched. This makes
1268        it possible to use different OBs at different ends of the domain (as
1269        with EXF)
1270    o reduce number of exch calls in shap_filt (s2).
1271    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1272      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1273    
1274    checkpoint57t_post
1275    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1276    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1277      same truncation, independent of the face number: affects affects several
1278      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1279    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1280      note that biharmonic viscosity + no-slip was not tested in any experiment.
1281    o fix bug in non-linear free-surf side-drag ; generate new output for
1282      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1283    o make mnc honor the writeBinaryPrec flag for most kinds of output
1284    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1285    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1286      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1287    o add brackets in multi-terms sum to get same truncation, independent of
1288      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1289      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1290    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1291      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1292      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1293      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1294      Suggested values of viscosity parameters found in mom_calc_visc.
1295      Many new viscosity diagnostics available.
1296    
1297    checkpoint57s_post
1298    o Add clearing-house for viscosity calculations, mom_calc_visc and
1299      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1300      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1301      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1302      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1303      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1304      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1305      ViscAhStrain and viscAhTension are now retired.
1306    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1307    o In response to JMC's bug report, genmake2 now ignores any soft-links
1308      that it finds in the *current* directory when searching for files.
1309      Soft-links found in any other source directories will still work as
1310      they did before.
1311    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1312      a C routine to unlimit the stack size
1313    o mnc-ify pkg/aim snapshot vars
1314    o mnc-ify pkg/land as requested by Daniel
1315    o various changes to mnc including:
1316      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1317      - output can now be grouped so that all files within a group
1318          change the ITER portion of their names in lock-step together
1319      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1320          and works with both EXCH1 and EXCH2 (but needs more testing)
1321      - writing works for all verification test cases w/ g77 on Linux
1322    
1323    checkpoint57r_post
1324    o make MNC variable initialization happen earlier
1325    o add diagnostics for (almost) each term of the momentum Eq.
1326    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1327    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1328    o remove MINIMAL_TAVE_OUTPUT option ;
1329      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1330    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1331      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1332    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1333    o add time-dependent SST, SSS control
1334    o cost terms in ecco/ modularized (new cost_generic.F)
1335    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1336    o new infrastructure for seaice model vs. obs misfits in seaice/
1337      * driver from the_main_loop.F is seaice_cost_driver.F
1338      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1339      * gradient check in Exp. 6a of natl_box_adjoint/
1340    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1341      (see README file)
1342    
1343    checkpoint57q_post
1344    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1345    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1346      - bug was reported by Jean-Michel and Ian Fenty
1347    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1348      update exp. cpl_aim+ocn output.
1349    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1350      Needed for high-res. runs with large global files
1351      to be able to limit tapelev size
1352    o Changed some tests for adjoint:
1353      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1354      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1355      * global_ocean.90x40x15/ back to default 3-level checkpointing
1356    o Modifications to enable scripted COMMON to MODULE conversion
1357      * verification/OpenAD/code/ has necessary scripts and description;
1358      * converts, compiles and runs successfully;
1359    
1360    checkpoint57p_post
1361    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1362    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1363      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1364    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1365    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1366      (was already the case for dissipation with mom_vecinv,
1367       and also the case for grad.PhiHyd when staggered-timeStep)
1368      This will allow to put dissipation out-off the AB time-stepping.
1369     Unfortunately, affects truncation error. Update output of exp. that "fails"
1370      (cg2d matching number) and leave the others for later: front_relax(10),
1371      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1372      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1373    
1374    checkpoint57o_post
1375    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1376      (2) its ready to be documented during the 20050801 DocFest
1377    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1378      for ideal_2D_oce and lab_sea on linux_ia32_g77
1379    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1380      in global1x1_tot/code_seaice_adj to access indices 32, 33
1381      (worth another tag)
1382    
1383    checkpoint57n_post
1384    o adding precip control xx_precip 32
1385    o adding swflux control xx_swflux 33
1386    o Replacing 10 forcing penalty cost routines by 1 generic.
1387    o Implementing partitioning in time-mean and variable adjustment
1388      for atmos. state.
1389    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1390    o in natl_box_adjoint:
1391      * updated exp 1 to 10
1392        (but does not have time-mean vs. variable split results yet)
1393    o updated global1x1/*_seaice_adj/
1394      to incorporate latest changes
1395    o enable useSingleCpuIO for mdsio vector routines
1396      (applies in particular to tapelev I/O)
1397    o removed inefficient K-loop in all active_file*control*.F
1398    
1399    checkpoint57m_post
1400    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1401      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1402    o pkg/exch2: filling of face-corner halo regions is optional
1403      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1404    
1405    checkpoint57l_post
1406     tag before updating tutorials (pre-release-2)
1407    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1408       for output and interpolation of input fields onto model grid)
1409    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1410       Affects results of exp. rotating_tank ; update output.txt.
1411    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1412          and taking the square quantity and/or using a fraction-weight field.
1413    o fix aim_diagnostics_init.F mate numbers.
1414    o add mnc output capability to diagnostics/diagstat and update
1415      our cvsignore files for the ACSII output generated
1416    
1417    checkpoint57k_post
1418    o lab_sea now uses diagnostics package and provides a suite of
1419      new EXF diagnostics output.
1420    
1421    checkpoint57j_post
1422    o exf
1423      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1424        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1425        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1426      * extended diagnostics output
1427        - now includes all EXF variables
1428        - hs, hl moved to common block
1429        - separate S/R for diagnostics, called after ctrl vector is added
1430        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1431        - EXFqnet contains true Qnet (i.e. includes qsw)
1432      * updated verif. lab_sea, global_with_exf
1433      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1434        to ensure that diagnostics sees a true EXFqnet
1435    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1436    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1437      several times with different frequencies.
1438    o mnc-ify the thsice package as requested by Daniel Enderton
1439      - the monitor--MNC output needs work
1440      - many attributes need to be added (most are currently blank)
1441    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1442      - many attributes need to be added (most are currently blank)
1443    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1444    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1445    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1446      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1447         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1448    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1449     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1450    
1451    checkpoint57i_post
1452    o Diagnostics package was changed: diagnostic allocation is now deactivated
1453      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1454    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1455      add 1rst Order upwind vertical Shear.
1456    o add a quick fix for A/B checkpointing in OFFLINE mode
1457    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1458      end-run around the C/Fortran linking horror in eesup/src/timers.F
1459    o added pkg/runclock: allows user to terminate run based on wall clock
1460    o added non-hydrostatic scaling parameter: nh_am2
1461    o pkg/my82: futile attempt to make results compiler-independent by adding
1462      some "_d 0", etc. no effect.
1463    o for mnc output, fill the 'T' coordinate var with myTime and create a
1464      separate 'iter' variable for iteration count
1465    o pkg/diagnostics:
1466      add new capability: output of Global/Regional & per-level statistics ;
1467      tested against monitor output (including land & thSIce) on various exp.
1468    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1469    
1470    checkpoint57h_done
1471      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1472      data.diagnostics, data.gchem, data.ptracers) is done.
1473    
1474    o pkg/diagnostics: prepare for Global/Regional statistics.
1475      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1476    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1477      and rename it: DIFFERENT_MULTIPLE
1478    
1479    checkpoint57h_post
1480    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1481    o pkg/diagnostics: change output frequency, now in seconds (instead
1482      of Nb of iterations). This requires to change data.diagnostics.
1483    checkpoint57h_pre
1484    
1485    o in mnc, let the user create the output dir if both mnc_outdir_date
1486      and mnc_outdir_num are false
1487    o add fflags() to pkg/diagnostics which allows one to specify, on a
1488      per-file basis, the file precision [default behavior is unchanged]
1489    o added diagnostics to pkg/kpp, including computation of mixed layer
1490      depth based on a temperature/density criterion
1491    o updated verification/natl_box to test the new pkg/kpp diagnostics
1492    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1493    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1494    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1495      not mnc -- this mistake was found by JMC and is now corrected
1496    
1497    checkpoint57g_post
1498    o add Adams-Bashforth 3rd Order time stepping:
1499      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1500      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1501    checkpoint57g_pre
1502    
1503    o make lambda[Theta,Salt]ClimRelax spatially varying
1504      (default remains spatially uniform constant based on tau)
1505    o added new control variables
1506      * init. uVel, vVel, etanN
1507      * lambda[Theta,Salt]ClimRelax
1508    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1509      (suggested by G. Forget)
1510    
1511    checkpoint57f_post
1512    o add parameter "baseTime" = model base time = time at iteration zero
1513      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1514      account for baseTime shift
1515    o move Coriolis arrays from PARAMS.h to GRID.h
1516    checkpoint57f_pre
1517    
1518    o mnc-ifying the seaice package
1519    o introduced an alternative length scale calculation for use in the limiting
1520      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1521    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1522    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1523      as well as grad(vort3).  Made it compatible with both approximate form
1524      for the cubed sphere and full form of these gradients.  Added flag
1525      useFullLeith to select between approximate and full form.  
1526    o add "d0" in getcon.F to reduce differences between compilers/platforms
1527      update output.txt of exp. fizhi-gridalt-hs
1528    o change port_rand funtion to allow to set the seed.
1529    o fix obscure MNC bug involving conversion between reals and integers
1530      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1531        new version is now more standards-compliant
1532    o adjoint-related modifications
1533      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1534      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1535      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1536    
1537    checkpoint57e_post
1538    o Adding eddy stress controls a la Ferreira et al.
1539    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1540    
1541    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1542      update output.txt of exp. fizhi-gridalt-hs
1543    o add more "Z" dimensions and associated coordinate vars to MNC
1544    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1545    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1546      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1547      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1548      months and years.  Requires pkg/cal.
1549    o diagnostics: add pickup functionality
1550      - off by default for backwards compatibility
1551      - current version only uses MDSIO -- MNC will be added
1552    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1553    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1554    
1555    checkpoint57d_post
1556    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1557    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1558      output from the diagnostics package
1559    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1560    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1561      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1562    o add coordinate variables to the MNC output from the diagnostics package
1563    o change MNC-flags default value: true when useMNC=TRUE
1564    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1565      the ability (off by default) to read the grid information using MNC
1566    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1567    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1568    o do snap-shot diagnostics at the middle of the time-interval (instead of
1569      at the end).
1570    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1571      new test for AIM with thSIce + slab-ocean
1572    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1573    o move state variable diagnostics to the beginning of the time step ;
1574      (note: still needs some work specially for snap-shot diagnostics)
1575      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1576    
1577    checkpoint57c_post
1578    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1579    o generate new output.txt files on faulks with g77 & the new -ieee option
1580    checkpoint57c_pre
1581    
1582    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1583      update output.txt of exp. global_ocean.90x40x15
1584    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1585      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1586    o add saltFlux(+File) forcing capability with periodicExternalForcing
1587    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1588    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1589    o improvements for the MNC output from DIAGNOSTICS:
1590      - correct handling of the unlimitied dimension
1591      - all dims now have associated coordinate variables
1592      - variables located at U, V, and Corner ("Z") points are now written
1593        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1594        *all* data points are output
1595    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1596    o added pkg/seaice/seaice_monitor.F
1597    o mdsio_readfield.F can now read files visible only to master MPI process.
1598    o pkg/seaice: some test code for ice-modified ocean stress
1599    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1600      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1601      spurious negative numbers for precipitation and humidity.  Will cause
1602      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1603    o pkg/ctrl/
1604      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1605        May be enabled via doPackDiag
1606      *  introduce z-scaling of
1607         + gradient (doZscalePack) and
1608         + control (doZscaleUnpack)
1609    o pkg/mdsio/
1610      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1611      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1612    
1613    checkpoint57b_post
1614    o simplify options in diagnostics_fill arguments (remove weird combinations)
1615    o fix MNC coordinate variables so that they now contain per-face index
1616      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1617      general, EXCH2 grids are only aligned to a "local" coordinate system
1618    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1619    o Implement instantaneous output within pkg diagnostics:
1620      setting a negative frequency in data.diagnostics produces
1621     "snap-shot" output (as opposed to time-average if freq > 0)
1622    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1623      NOTE: change ptracer diagnostics name: use 2 characters to work with
1624            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1625    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1626      becomes the coordinate variable for the 'T' dimension
1627    o add CF-style coordinate variables to MNC
1628      - just a first cut:  numbers are meaningless on the cubesphere and
1629        missing along the T axis but otherwise it works!
1630    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1631    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1632    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1633      this is based directly on what the model compute, so that the content of
1634      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1635    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1636    o clean up build options files for SunOS, in particular
1637      - remove -traditional from xmakedepend
1638      - change -xarch=v9 to -xarch=native for f77
1639      - restore use of make (not gmake)
1640      - add CC=gcc if using g77
1641    o changes per discussion of AM, JMC, & EH3 today:
1642      - move redundant "grid" variables out of "state" -- in preparation of
1643        creating proper CF-style coordinate variables and in recognition
1644        that any/all grid variables can be easily copied (eg. w/NCO) from
1645        the grid files into any of the other NetCDF files
1646      - *always* output grid variables with MDSIO (this will eventually be
1647        changed)
1648      - output MNC grid file if useMNC is true
1649    o every instance of _END_MASTER() has been found and replaced with
1650      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1651      preprocessors
1652    o re-arrange diagnostics pkg initialisation:
1653     - allow each package to extend the available diagnostics list
1654     - add some checking and fix small problems (multi-threaded, ...)
1655     - new S/R diagnostics_fill (replace fill_diagnostics):
1656       look through the short list of active diag. (instead of the long list)
1657       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1658    
1659    checkpoint57a_post
1660    o this set of changes restores TAMC compatibility
1661      tested for global_ocean.90x40x15 adjoint on trough
1662      (what a pain)
1663    
1664    checkpoint57a_pre
1665    o some modifs in tools/build_options for sunos
1666    o call ctrl_pack for ctrl at end for optimcycle=0
1667    
1668    checkpoint57
1669    o add horizontal bi-harmonic viscosity for vertical velocity
1670      - new parameter viscA4W (defaults to viscA4)
1671      - affects only non-hydrostatic code
1672      - to be done: no-slip lateral boundary conditions
1673    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1674    o implement Implicit Vertical advection for pTracers
1675    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1676      (implemented also for implicit vertical diffusion & advection)
1677    o OBCS: extend application of tracer open boundary conditions
1678      to a strip beyond the boundary of width Olx/Oly
1679    o add call monitor to TAF set of required calls (flow directives)
1680      and include in natl_box_adjoint
1681    o untangle a few ifdefs related to cost, ctrl, autodiff
1682      untangel a few ALLOW_ECCO_OPTIMIZATION
1683    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1684      (theta2, salt2 in ecco_cost_weights)
1685    
1686    checkpoint56c_post
1687    o OBCS as control variables
1688      - update ctrl_ad_diff.list, obcs_ad_diff.list
1689      - remove balance of obcs controls from default
1690      - fix index bug nobcs in ctrl_init
1691      - fix dummy fields filen in ctrl_pack
1692      - add dummy weights for obcs
1693    o lsopt: comment out fort.94 output
1694    o optim:
1695      - remove unnecessary header files
1696      - adjusted namelists
1697      - add xerbla.F to Makefile
1698    o exf:
1699      - multiple modifications of exf_check_range
1700      - unit change in exf_init_runoff from [m/year] to [m/s]
1701    o mdsio:
1702      - i/o-vector change debugLevel from debLevA to debLevB
1703    
1704    checkpoint56b_post
1705    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1706      is called from DO_THE_MODEL_IO
1707      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1708      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1709      - clean up PTRACERS_WRITE_TIMEAVE a little
1710    o add another verification experiment that tests both the cfc-pkg and
1711      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1712      reactive tendencies treated inline with regular timestepping
1713    o testreport previously did a lousy job of comparing small numbers, so
1714      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1715      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1716      testreport.
1717    o ptracers_monitor: bug fix for MPI
1718    
1719    checkpoint56a_post
1720    o GCHEM: finish reorganizating the package
1721      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1722        (introduces another 3D-array for each passive tracer, but only if
1723        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1724        gchemTendency is not needed because the timestep is done separately)
1725      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1726      - GCHEM is now---more or less cleanly---separate from PTRACERS
1727      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1728        so clear to me how that should be done in a general way.
1729    o CFC: improve formatting of output in CFC_ATMOS
1730    o PTRACERS:
1731      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1732        that ALL experiments with ptracers enable can be checked. This makes
1733        GCHEM_MONITOR obsolete.
1734      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1735        monitorFreq
1736      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1737    o add PTRACERS (PTR0[1-5]) to testreport output
1738    o exf_check_range:
1739      * default changed to .TRUE.
1740      * will check values for niter0 if debLevA, every timestep if debLevB
1741      * STOP in exf_check_range if 'out of range'
1742      * range chosen generous to allow for potential extema
1743      TBD: a version with stricter range
1744           permitted range would be runtime parameters
1745    o GMredi:
1746      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1747      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1748      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1749    o GCHEM:
1750      - move call to GCHEM_FORCING_SEP, so that it is now called before
1751        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1752      - introduced a useGCHEM runtime flag and applied it everywhere.
1753      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1754        this flag is now only visible within GCHEM-pkg routines.
1755      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1756        be replaced by a 3D array that is computed before thermodynamics; for
1757        this, the tracer ID iTracer had to be included into the parameter list
1758        of ptracers_forcing
1759      - set up forward_step to call gchem_forcing, that will replace
1760        gchem_forcing_int in ptracers_forcing
1761      - cleaning up
1762    o small cleaning of exch2: remove files that are also in eesupp/src
1763    
1764    checkpoint56
1765    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1766    o mnc: cleanup "full" files--fixes out-of-memory problem
1767    o ECCO-GODAE
1768      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1769      * fully merged and updated from SIO code
1770        windstress sign change affects
1771        - exf_inscal_[u/v]stress
1772        - sign of xx_tau[u/v] adjustments
1773        - signs in cost_scat
1774      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1775      * natl_box_adjoint updated and compressed
1776      * 2-level checkpoint switch added
1777        (tested in EXP. 1 of natl_box_adjoint)
1778      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1779    o SVD
1780      * first complete, non-hacked version for SVD calculations
1781      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1782        performed via direct access files admtlm_vector.it????
1783        (via ctrl_[un]pack)
1784      * optimcycle is used for ARPACK iteration counter
1785        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1786      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1787        and add linear transforms where necessary
1788      * controls are initial/final SST, SSS (can be extended; need to check
1789        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1790    o mdsio: filename info to both stderr, stdout
1791    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1792      from sign change
1793    
1794    checkpoint55j_post
1795    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1796      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1797    o add consistent build directories and .cvsignore files to verification
1798    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1799    o make all subroutines 30 or less characters in length for certain older
1800      compilers to work (a thorough search only turns up two routines in
1801      pkg/ptracers)
1802    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1803      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1804    
1805    checkpoint55i_post
1806    o change arrays for total vertical diffusivity (2.D if explicit,
1807      3.D if implicit) ; each ptracer uses its own background value.
1808    o added mnc/NetCDF output capability to ocn_compon_interf
1809      - added bits to verification/cpl_aim+ocn so that it can run on
1810        ITRDA and other clusters without the mpirun "-wd" option
1811    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1812      configuration
1813    o give MNC the ability to create additional files rather than
1814      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1815      - the default is just less than 2GB which is a practical limit
1816        on many systems
1817    o Compute the non-local term using either KPP vertical diffusivity (=default)
1818       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1819    
1820    checkpoint55h_post
1821    o add verification test "vermix"
1822    o remove all the *_ioinc flags and replace with the single global
1823      outputTypesInclusive flag
1824    o allow to set a vertical profile of vertical diffusivity for T & S
1825    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1826    o useMNC moved from data.mnc to data.pkg
1827    
1828    checkpoint55g_post
1829    o Renaming carbon AD experiments to comply with testreport conventions
1830    o Updating adjoint of Held-Suarez hs94.1x64x5
1831    o Fixing directives for non-ECCO forward_step, after ECCO directives
1832      have been fixed to avoid recomp. of do_oceanic_phys
1833      Works well for global_ocean.90x40x15,
1834      but recomp. issue remains for carbon
1835    o Updating adjoint output for natl_box_adjoint after
1836      pkg/ecco has been modified (see taga c55d_post)
1837    
1838    checkpoint55f_post
1839    o rename to timeave_init_fixed
1840    
1841    checkpoint55e_post
1842    o some delicate re-shuffle of store directives to avoid one
1843      extra call of do_oceanic_physics
1844      affects ecco_the_main_loop.F, do_oceanic_physics.F
1845      checkpoint_lev1_directives.h
1846    o NB: this may break global_ocean adjoint temporarily,
1847      but it is clear how to fix it. Will do later, need this now.
1848    
1849    checkpoint55d_post
1850    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1851    o ecco_cost_weights is modified to 1x1 runs
1852    o modifs to allow observations to be read in as
1853      single file or yearly files
1854    o enable to read exf forcing fields as either
1855      single file or yearly files (flag useExfYearlyFields)
1856    checkpoint55d_pre
1857    
1858    o switch between 2-level and 3-level checkpointing
1859    o add ability of MNC to write local and "partial" (eg. 2D slices where
1860      the full 3D field is never actually stored) arrays to NetCDF files
1861      with the correct (that is, the complete multi-dimensional) set of
1862      array indicies
1863      - used in mom_vecinv() to write the diagFreq output
1864      - tested (demonstrated) in verification/aim.5l_cs
1865    o further mnc-ification
1866      - add verification/lab_sea to the list with mnc setups
1867      - fix undefined mnc v-names in cd_code
1868      - add kpp to mnc output (both snapshot and timeave)
1869    o non-hydrostatic code
1870      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1871        in calc_gw.F
1872      - defaults to viscAh
1873      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1874        friction or Leith) in non-hydrostatic mode, as long as there is
1875        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1876    o pkg/cost
1877      extend simple cost functions to treat time mean quantities
1878      (T,U,V) via cost_accumulate_state from cost_tile
1879    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1880        be 2 times larger than the minimum size the advection scheme requires.
1881        now get a perfect conservation of salt in advect_cs test-exp (updated)
1882    o GGL90 (Gaspar's TKE mixed layer)
1883      - add horizontal diffusion of TKE, requires exchanges in
1884        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1885        default. In OPA there is no horizontal diffusion of TKE but the
1886        mixing coefficients are computed from a horizontal average of TKE of
1887        6 points or so. I think that diffusion has a little more physical
1888        justification.
1889      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1890        was in vain)
1891      - mask tke-variable in ggl90_init
1892    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1893    o fix biharmonic diffusion on CS-grid.
1894    o more obcs stuff
1895      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1896        for reading boundary values. This routine is called from
1897        obcs_prescribe_read
1898      - updated obcs_check
1899      - changed sponge layer relaxation parameter units for days to seconds
1900      - turned off sponge layer by default
1901      - changed argument list of OBCS_CALC to myTime+deltaTclock
1902      - fixed about 35 bugs in obcs_external_fields_load
1903    
1904    checkpoint55c_post
1905    o obcs stuff
1906      - new runtime flags useOBCSprescribe, useOBCSbalance
1907      - re-arranged obcs_calc
1908      - moved exf_getobcs to obcs_prescibe_read
1909        obcs_prescibe_read is called after ORLANSKI stuff
1910        and independent of it (executable can contain all).
1911      - updated obcs_check
1912      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1913        These may be necessary only if tangential velocities are
1914        prescribed at OB, not sure, needs testing.
1915    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1916      which simplifies the calls and passes the ifc check-bounds test
1917    
1918    checkpoint55b_post
1919    o add a 2D scalar, Z location, exchange_2 routine.
1920    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1921      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1922      affects advect_cs results (for the wrong reason): update output.txt
1923    o use a more standard discretization for biharmonic viscosity ;
1924     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1925      affects results of dome set-up: update output.txt
1926    o fix gad_advection.F (CubedSphere part), back to version 1.23
1927    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1928    
1929    checkpoint55a_post
1930    o merged code to
1931      * prescribe/read time-dependent open boundaries
1932        (works in conjunction with exf, cal)
1933      * sponge layer code for open boundaries
1934      * each boundary N/S/E/W now has its own CPP option
1935        (healthy for the adjoint)
1936    
1937    checkpoint55
1938    o up-to-date adjoint of previous breaks
1939      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1940      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1941      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1942      - carbon: * remove tr1-related adjoint verification
1943                * add ptracer as control variable
1944    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1945      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1946    
1947    checkpoint54f_post
1948    o in verification/carbin/ remove experiment related to
1949      ALLOW_PASSIVE_TRACER (array tr1 etc)
1950      code_ad/ input_ad/ results_ad
1951    
1952    o add two new packages
1953      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1954        + subject to optimization (memory)
1955      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1956        + subject to reordering (many GOTOs in the original code)
1957        + so far opps is called for every (i,j) point, and then operates in
1958          the vertical; one may want to reorder the scheme in order operate in
1959          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1960          fields)
1961    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1962      - all verification tests compile and run with linux_ia32_g77
1963      - defaults are compatible with current input files--nothing
1964        should change if you were not previously using MNC
1965      - MNC output has been added in numerous places (eg. timeave)
1966        but there are still a few writes not yet do-able with MNC
1967        (this is in progress)
1968      - flags now allow for either/or/both use of MDSIO and MNC and
1969        documentation will soon follow
1970      - numerous small formatting cleanups for ProTeX
1971    o add version info (via BUILD_INFO.h) to MNC and stdout
1972    
1973    checkpoint54e_post
1974    o add two new packages
1975      - pp81 (Packanowski and Philander, 1981), Richardson number and
1976        stratification dependent mixing
1977      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1978      - these scheme operate in a similar manner as KPP (without ghat, of
1979        course), however there is only one diffusivity that is used for both
1980        temperature and salinity (and passive tracers)ç
1981    o add offline package
1982    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1983      provided by Stephanie Dutkiewicz
1984    o genmake2: add ability to search for C compilers and cleanup test output
1985      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1986    
1987    checkpoint54d_post
1988    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1989    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1990      leading to additional shift by 5 days each year of integration
1991       (i.e. leading to considerable offset over the years)
1992    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1993    o start with no AB and no initial filtering (staggerTimeStep):
1994      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1995    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1996      (external loading & cpl import/export stay in forward_step.F)
1997    o update coupling interface to work with new staggerTimeStep
1998    o change MDSIO ptracers_pickup.
1999    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2000    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2001    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2002    
2003    checkpoint54c_post
2004    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2005      this affects (truncation error) output.txt of test-exp:
2006       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2007    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2008    o change Qnet to always be the net heat flux, (+upward).
2009      affects (truncation error) output of natl_box exp.: updated
2010    o define the max number of passive tracers in PTRACERS_SIZE.h
2011    o start to test mnc routinely in exp0
2012    o add sea-ice loading (sIceLoad) as a new forcing field.
2013    
2014    checkpoint54b_post
2015    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2016       impressive on Altix and Opteron systems)
2017    o diagnostics can now write NetCDF files through the mnc package
2018    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2019    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2020    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2021      affects (truncation error) output of lab_sea & natl_box exp.: updated
2022    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2023    
2024    checkpoint54a_post
2025    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2026    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2027    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2028    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2029      + internal_wave (shift in writing cg2d_ini_res)
2030    checkpoint54a_pre
2031    
2032    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2033      - modified verification/lab_sea and natl_box_adjoint accordingly
2034    
2035    checkpoint54
2036    checkpoint53g_post
2037    o prepare splitting of thermodynamics: store convect.counter in common block
2038    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2039      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2040    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2041    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2042    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2043    o restore adjointability
2044    
2045    checkpoint53f_post
2046    o modifications that affect AIM experiment results (update output.txt):
2047      - no advection of S at top interface Nr (pkg/generic_advdiff)
2048      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2049    o AIM pkg:
2050      - include stability function into surf.Flux derivative relative to Tsurf
2051      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2052    
2053    checkpoint53e_post
2054    o merged cylindrical coord configuration
2055    o added rotating_tank experiment
2056    checkpoint53e_pre
2057    
2058    checkpoint53d_post
2059    o faulks upgraded: re-generate output.txt that have changed:
2060       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2061    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2062    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2063    o added Sadourny discretization of Coriolis
2064      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2065      - re-enabled use of omega3 (useAbsVorticity)
2066    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2067      vector-invariant equations
2068      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2069    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2070      hopefully without new bugs
2071      - still to do: biharmonic friction for non-hydrostatic w
2072    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2073    o regenerated output for global_ocean_ebm (using -ieee)
2074    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2075      of mom_common/
2076      - simple re-arrangement of instructions within computing loop
2077    checkpoint53d_pre
2078    
2079    checkpoint53c_post
2080    o new version of coupler for AIM+thSIce and Ocean models
2081     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2082     - land: change Evaporation of snow
2083     - aim with thSIce: fix bug in snow-precip.
2084    o changes to calc_gw.F
2085     - bug fix for w^2 term near the bottom boundary
2086     - (hopefully) improve the lateral slip boundary condtions for use with
2087        partial/looped cells
2088      - because the bug fix changes two verification experiments anyway (exp5
2089        and plume on slope), change the lateral boundary condition from half slip
2090        to the value of no_slip_sides
2091    o ebm package wasnt quite up to the parallel task. Fixed that.
2092    o Adjoint of EBM package + verification
2093      * TLM OK
2094      * ADM not sufficient accuracy yet (needs further testing)
2095    
2096    checkpoint53b_post
2097    o Commiting new energy balance model to repository
2098      * package is pkg/ebm
2099      * verif. is verification/global_ocean_ebm
2100      * references are in ebm_driver.F
2101    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2102    C        Global thermohaline circulation. Part I:
2103    C        Sensitivity to atmospheric moisture transport.
2104    C        J. Climate 12(1), 71-82
2105    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2106    C        Global thermohaline circulation. Part II:
2107    C        Sensitivity with interactive transport.
2108    C        J. Climate 12(1), 83-91
2109    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2110    C        Destabilization of the thermohaline circulation
2111    C        by atmospheric eddy transports.
2112    C        J. Climate 7(12), 1870-1882
2113    o Will need long integration testing.
2114    checkpoint53b_pre
2115    
2116    o created pkg/mom_common in preparation for variable viscosity code
2117    o renamed and split ini_mnc_io
2118    o pkg/land: only liquid water can diffuse or run-off
2119    o AIM using land: soil wetness availability account for snow
2120    o added printMapIncludesZeros to EEPARMS namelist
2121    
2122    checkpoint53a_post
2123    o restore TAMC compatiility for exf_constants.h
2124      (no usage of _d in .h)
2125    o Additional storing in KPP in an attempt to fix
2126      TAMC problem with adjoint of KPP code.
2127      (no success...)
2128      Identical code works fine with TAF.
2129    o Fixed verification/natl_box_adjoint experiments.
2130      Initial conditions for Experiments 4 and 5 are now
2131      set to "SEAICE_initialHEFF=0", which is more reasonable,
2132      and hence gives results closer to that of Experiment 2.
2133      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2134    
2135    checkpoint53
2136    o stable checkpoint with up to date adjoint
2137      TLM tests only run for 1st grdchk at the moment. Its unclear if
2138      this is a code problem or a problem with resetting code for g_
2139      variables that is being autogenerated wrong.
2140      Otherwise:
2141       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2142       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2143         are both still in chaos following their security messes.
2144    
2145    checkpoint52n_post
2146    o various build (mostly genmake2) changes including:
2147      - ability to build/run more easily within Cygwin and MacOS X
2148      - more complicated Makefiles with a stronger dependence on Gnu Make
2149    o pkg/seaice modifications
2150      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2151        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2152        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2153      - changed proxy for geostrophic velocity and updated
2154        verification/lab_sea/results/* accordingly
2155      - removed ADI dynamic solver from pkg/seaice
2156      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2157        they caused a segmentation fault under certain circumstances
2158      - removed unused field WATR
2159    o bug fix in exf-package:
2160      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2161         now reflect that.
2162    o small fixes in the cal-package:
2163      - set reference date to first of January for the 'model'-calendar
2164      - failing of cal_CheckDate in cal_FullDate now actually results in a
2165        warning
2166    o small modifications in exf-package to increase flexibility:
2167      - change climtempfreeze from a constant to a runtime parameter that
2168        is specified in data.exf_clim (default = -1.9)
2169      - introduce runtime parameter windstressmax (default = 2.0) that is
2170        specified in data.exf
2171    o fix in pkg/thsice:
2172      - update Evap (Tsf changes) to be consistent with Latent heat flux
2173      - maintain snow precipitation unchanged (even if Tsf >=0).
2174     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2175    
2176    checkpoint52m_post
2177    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2178      this does not change any of the results, because myIter=0 in swfrac always
2179      lead to jwtype=2 (the default anyway), but the call makes little sense
2180      as a default
2181    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2182    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2183      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2184    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2185    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2186    o extending useSingleCpuIO option to work with new exch2 I/O format
2187      - old-style, missing-tile I/O is still accessible by defining CPP
2188        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2189    o monitor package can write to NetCDF files and/or STDOUT
2190    o fix re-definition bug in MNC_GRID_INIT_ALL()
2191    o doc/api_reference added
2192      - a framework for building an API Reference Manual using all
2193        the "protex" comments embedded in the code
2194      - see pkg/generic_advdiff, pkg/mnc for examples
2195    o MNC:
2196      - make myThid the last argument for all subroutines
2197      - new default for the grid files: NO halos
2198      - add useMNC and other run-time flags
2199      - separate per-file-group handling of the unlimited dimension
2200      - early initialization of MNC w/ flags read at the eeboot stage
2201        and lookup tables set in initialize_fixed
2202      - write all MNC output to a freshly-created directory
2203    o thermodynamics sea-ice (thsice) is now tested with testreport.
2204    o test exp. advect_cs: use the standard cs32 grid ; update output.
2205    o Added functionality to grdchk:
2206      pick global i,j,k position (or nearest wet) where to perform check.
2207    
2208    checkpoint52l_post
2209    o new land formulation:
2210      a) use ground enthalpy as prognostic variable to ensure exact
2211         energy conservation.
2212      b) account for water temperature and for latent heat of freezing
2213         in all processes (rain, run-off, ground storage)
2214      c) compute surface and ground temperature implicitly.
2215    o aim_v23 modification for new land model:
2216      a) Treat separately land / ocean / sea-ice surface fluxes
2217         to allow implicit computation of land & sea-ice surface temp.
2218      b) add snow precipitation.
2219    checkpoint52l_pre
2220    
2221    o fix problem (when 1 tile is empty) in min/max monitor.
2222    o fix bug in timeAve (u,vZetatave in common block)
2223    o no restoring terms under ice for pkg/seaice
2224    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2225    o bug fix for pkg/seaice pickups
2226    o change MNC call locations and add coordinate attributes
2227    o mask vorticity at the corner ; affects global_ocean.cs output
2228    o fix ini_curvilinear_grid ; test CS experiments with mpi
2229    o aim.5l_cs: modify sea-ice fraction input file ; update output
2230    o exf: Adding simple range check routine for exf fields after read
2231    
2232    checkpoint52k_post
2233    o removed top-level directory "diags"
2234      - we migrated these functions to pkg/timeave a long time ago
2235    o fixed bug introduced in pkg/monitor
2236    o accuracy ctrlprec = 32 insuffient for gradient checks using
2237      averaged fields (I/O via cost_averages)
2238      -> use ctrl.h in active_file*.F to control I/O precision.
2239    o paramter list of CALL ADTHE_MAIN_LOOP
2240    o added initial do_the_model_io to ecco
2241    o set all ...Freq to zero after cost_final
2242      taveFreq, dumpFreq, pChkptFreq
2243    o MAIN and ECCO differentiability restored
2244    
2245    checkpoint52j_post
2246    o fix nchklev in tamc.h for global_ocean...
2247    o Bringing flow and store directives up-to-date
2248    o Really weird thing!
2249      call do_the_model_io from the_main_loop with parameters
2250      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2251      TAF places a faulty re-call of initialise_varia
2252      after cost_final call which should not be there!
2253    checkpoint52j_pre
2254    
2255    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2256      error messages
2257    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2258    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2259      debug output
2260    o modfied mdsio_writefield.F to handle non-global files under exch2
2261    o update AIM Cubed-Sphere exp (aim.5l_cs):
2262      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2263    o update AIM Equatorial Channel exp:
2264      use standard aim_v23 pkg and change the SST fields to be more realistic.
2265    o globalFile now works with exch2
2266    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2267      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2268    o limit timeave output for hi-res integrations
2269    
2270    checkpoint52i_post
2271    o removed CPP_EEOPTIONS.h from verification/*/code
2272    o updated the tiling for global_ocean_pressure
2273    checkpoint52i_pre
2274    
2275    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2276      the old pkg/aim).
2277    
2278    checkpoint52h_pre
2279    o shortened offending lines in exch2_send_rx?.template
2280    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2281    o genmake2: add build & execute test for NetCDF code
2282    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2283      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2284    o added useSingleCPUIO flag to monitor.F and mon_out.F
2285    o added temporary hack for sea-ice dynamics on the cube:
2286      metric terms are ignored and it is assumed that
2287      there is no sea-ice on cube faces 1, 2, 4, and 5.
2288    
2289    checkpoint52f_post
2290    o added exch2 cube routines to pkg/exch2
2291    o modified hs94.cs-32x32x5 to use it
2292    o added new grid files to hs94.cs-32x32x5
2293    checkpoint52f_pre
2294    
2295    checkpoint52e_post
2296    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2297      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2298    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2299      to work with implicit vertical advection and AB ;
2300    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2301    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2302     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2303    checkpoint52e_pre
2304    
2305    o fix bug in impldiff when Nr=1 or Nr=2.
2306    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2307    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2308    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2309      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2310    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2311    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2312    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2313    
2314    checkpoint52d_post
2315    o re-tiled many expts to allow comparison in multi-processor mode
2316      - updated output accordingly
2317      - changed hs94.128x64x5 to use intial T from file rather than use the
2318        random number generator
2319    o add infrastructure in model routines for fizhi and gridalt packages
2320    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2321    o changes to permit hi-res, cubed-sphere, configuration
2322      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2323      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2324      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2325        of surface winds for the cube
2326      (A verification experiment, based on global_ocean.cs32x15, but with
2327       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2328       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2329       complete with example surface forcing files and matlab scripts to look
2330       at the output and compare it with that of global_ocean.cs32x15.)
2331    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2332       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2333       to conform to the common rule.
2334    o check-in the first version of the coupler + interfaces for multi-components
2335       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2336       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2337       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2338       - ocean and atmos. share the same horizontal grid (no interpolation).
2339       - exchanges between component and coupler is done in forward_step
2340    o new verification experiment, cpl_aim+ocn:
2341       coupled ocean - AIM atmosphere on cs32 grid.
2342    
2343    checkpoint52d_pre
2344    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2345    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2346    
2347    checkpoint52c_post
2348    o Fixing OPTIONS files for use of exf:
2349      - ALLOW_ECCO not needed
2350      - ECCO_CPPOPTIONS.h should not be included from
2351        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2352        as has been the case in the past
2353      - All cal/exf related options are currently set in
2354        single header file. Should remain so until we
2355        agree on a consistent new policy.
2356    o Removed all CPP options for cal package.
2357      cal has no more CPP options.
2358    o modified STOREs in GAD_ADVECTION
2359    o corrected key comp. for passkey
2360    
2361    checkpoint52b_post
2362    o new version: "thsice" of thermodynamic sea-ice pkg:
2363     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2364     - modify fluxes but do not change theta directly;
2365     - light cleaning of bulk_force pkg (still needed with thsice).
2366     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2367       + output_thsice.txt to test thsice & bulk_force pkgs.
2368    o put back grid & coriolis monitor output.
2369    checkpoint52b_pre
2370    
2371    o call "do_the_model_io" at the beginning (=> dump initial state)
2372    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2373    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2374      (need info on NUMBER_OF_PTRACERS)
2375    o missing PTRACERS headers in some routines
2376    o default tamc.h in pkg/autodiff supposed to crash
2377      to ensure proper customization
2378    
2379    checkpoint52a_post
2380    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2381      - moved surfaceTendencyTice from pkg/seaice to main code
2382      - subroutine FREEZE_SURFACE now limits only surface temperature
2383        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2384        => new output.txt for global_ocean.cs32x15 & global_with_exf
2385      - keep the old version of FREEZE for backward compatibility;
2386        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2387      - corresponding modifs for TAF directives
2388    o added surface flux output variables to TIMEAVE_STATVARS
2389    o time-averaged output for pkg/ptracers
2390    o fix problem with ECCO-related divided adjoint
2391      snapshot file was missing some ad-variables,
2392      but no warning issued by TAF
2393    
2394    checkpoint52a_pre
2395    o some bug fixes for #undef REAL4_IS_SLOW
2396    
2397    checkpoint52 = ecco_c52_e35
2398    o after testing adjoints of checkpoint51u_post
2399    
2400    checkpoint51u_post
2401    o this is the post-merge tag of the ecco-branch
2402      (needs another clean checkout and re-testing)
2403    o various natl_box_adjoint configs and results
2404      but no input fields
2405    o obcs adjoint not yet merged!
2406    o adding ECCO global 1x1 and 2x2 degree configs
2407    o updated/extended some store directives for seaice
2408    o pkg/ecco now containes ecco-specific part of cost function
2409    o top level routines the_main_loop, forward_step
2410      supersede those in model/src/
2411      previous input data.cost now in data.ecco
2412      (new namelist ecco_cost_nml)
2413    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2414    
2415    checkpoint51t_post
2416    o this is the pre-merge tag of the ecco-branch
2417    
2418    checkpoint51s_post
2419    o cleanup: removed various obsolete #define-s
2420    o pkg/grdchk
2421      - renamed 'ph-grd 3' to 'grad-res'
2422      - merged from ecco-branch
2423        (remaining bug fixes for obcs gradient checks)
2424      - additional high-precision output for testreport
2425        (grep for 'precision_grdchk_result')
2426    
2427    checkpoint51r_post
2428    o cleaned up or removed CPP_OPTIONS.h files
2429    o updated results for some of the tests to reflect the new
2430      optfiles (-ieee: -O0 instead of -O3)
2431    
2432    checkpoint51q_post
2433    o cd_code:
2434      - moved cd_scheme.F -> cd_code_scheme.F
2435      - separate read_checkpoint from cd_code_ini_vars.F
2436      - separated cd_code part from write_checkpoint
2437      - updated AD_SOURCE, generated .flow
2438      - added CD_CODE_VARS.h to the_main_loop
2439      - Moving cd_code specific store dir.s to pkg/cd_code
2440    o ctrl package totally restructured
2441      - pack/unpack now optional and decoupled from
2442        xx_/adxx_ I/O
2443      - ctrl_pack/unpack cleaned
2444        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2445      - confined inclusion of AD_CONFIG.h to where necessary.
2446    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2447    
2448    checkpoint51p_post
2449    o create initial cd_code package
2450      - WARNING: the initialization of fields within packages
2451        is broken because INI_FIELDS (where READ_CHECKPOINT is
2452        called) is called *before* PACKAGES_INIT_VARIABLES.
2453        This seems to be backwards since
2454        1) its important to initially zero the entire field including
2455           the "halo" region
2456        2) zeroing needs to be done *before* reading pickup info
2457           and the pickup call might or might not happen in any
2458           particular run
2459      - this needs an overhaul for R2
2460    o cleanup verification/*/code/GMREDI_OPTIONS.h
2461    o cleanup testreport
2462    
2463    checkpoint51o_post
2464    o bringing AD-related verif's up to date with genmake2
2465      - carbon/
2466      - global_ocean.90x40x15/
2467      - hs.94.1x64x5/
2468      - (front_relax/ )
2469    o (more) consistent directory structure for AD-related verif.'s
2470    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2471    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2472    o bug fix in find_alpha.F for MDJWF:
2473      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2474        change rho -> rho-rhoConst
2475      - replace call find_rho to find_rhonum
2476    o initialisation of rFlx extended to full array (required by TAF)
2477      and shifted to thermodynamics
2478    o removed PTRACERS.h in ptracers routine
2479    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2480    o Correcting initialisations for fVerU, fVerV.
2481    o helping TAF to recognize dependency on kUp for
2482      fVerU, fVerV
2483    o Replacing delZ by delR in pkg/ctrl/
2484    checkpoint51o_pre
2485    
2486    o undid all of cp51 pending some cleanups and discussion
2487    o added the [#include "AD_CONFIG.h"] statement to all files that need
2488       it for adjoint/tl #defines
2489     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2490     o removed tools/genmake since it no longer works
2491    
2492  checkpoint51n_post  checkpoint51n_post
2493  o modifications to make FREEZE flux visible to pkg/kpp  o modifications to make FREEZE flux visible to pkg/kpp

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