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revision 1.137 by jmc, Wed Feb 26 03:29:08 2003 UTC revision 1.954 by jmc, Sat Feb 9 16:34:49 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  untagged  checkpoint59n
8    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
9      number in dedicate array "hdiag":
10      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
11        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
12      - many small changes (integer format) for large number of diagnostics
13      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
14        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
15    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
16      usingSphericalGrid, this allows to define the rotated grid coordinates
17      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
18      geographical coordinates according to the inverse of the rotation defined
19      by the Euler angles, so that Coriolis parameter and online-interpolation by
20      exf works with the geographical coordinates on XC/YC/XG/YG.
21      Naturally, this feature does not work with all packages, so some
22      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
23      profiles), because there the coordinates are assumed to be regular
24      spherical grid coordinates.
25    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
26      - introduce isopycnal diffusion coefficient control.
27    o tools/adjoint_options:
28      - additional control vector components.
29    o pkg/mnc: have mnc create marginally meaning full coordinate variables
30      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
31    o pkg/mypackage:
32      - add example of read/write pickup for state-var ;
33      - add entry points to the main code for state-vars diags & write-pickup.
34    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
35      transitions for useExfYearlyFields
36      - add new subroutine that determines the file to read from for
37        use*YearlyFields = .TRUE. and .FALSE.
38      - add a verification experiment to global_with_exf that tests
39        useExfYearlyFields with USE_EXF_INTERPOLATION defined
40    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
41      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
42      subroutines (which could be generated from a template, because they are
43      almost identical), for now they are included in obcs_prescribe_read.F for
44      simplicity
45    o pkg/exf:
46      - add a little more diagnostic to exf_interp_read (in analogy to
47        mds_read_field, can be turned off with debugLevel < debugLevA=1)
48      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
49        ugly but fast by unrolling short inner loops, inserting a unroll=8
50        directive in routine lagran, and splitting a loop and making do while the
51        outermost loop (the latter requires the intoduction of index arrays)
52    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
53    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
54      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
55    o verification/seaice_obcs: updated for restart test and latest options
56    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
57      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
58      for now this is only available for the C-grid code and also within
59      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
60    
61    checkpoint59m
62    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
63      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
64    o gad_som : fix flux output (& diagnostics) to have same units as other  
65      advection scheme fluxes (was previously multiplied by deltaT).  
66    o added verification/seaice_obcs both to test seaice open boundaries
67      and to provide an example matlab scrpt for generating them
68    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
69    o pkg/salt_plume: clean up salt_plume_frac.F to
70      remove redundancy in PlumeMethod 1 and 4
71    o pkg/kpp: added saltplume diagnostics
72    o pkg/obcs and pkg/seaice:
73      - do not set uice and vice to zero when OB*icefile are unspecified
74      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
75      - moved seaice tracer obcs after call to seaice_growth
76    o pkg/salt_plume: added various options for salt plume depth
77      criterion and for vertical distribution of the salt
78    
79    checkpoint59l
80    o pkg/ptracers: new version of ptracers pickup:
81      read meta file and write only fields which are needed to restart.
82      ( same logic as main pickup file ; also using pickupStrictlyMatch )
83    o pkg/seaice:
84      - add timescale for melting due to warm mixed layer as a means of
85        setting SEAICE_availHeatFrac more conveniently
86      - add a CPP-flag/runtime parameter check for flooding algorithm
87      - reformulated availHeat in seaice_growth.F to be independent of AREA
88    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
89      unit changes
90    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
91    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
92      SX vector computer.
93    o pkg/seaice:
94      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
95        seaice forcing fields can now be read only through pkg/exf
96      - removed some unused halos
97    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
98    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
99      or U/VICE from U/VWIND before computing U/VSTRESS
100    
101    checkpoint59k
102    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
103      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
104    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
105      all experiments pass when compile with un-initialised var. checking option.
106    o added pkg/salt_plume
107    o script to test restart (for now, in MITgcm_contrib/jmc_script)
108    o pkg/seaice: new read/write pickup version.
109      read meta file and write only fields which are needed to restart.
110      ( same logic as main pickup file ; also using pickupStrictlyMatch )
111    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
112    o lab_sea.hb87: modify the domain & update output.hb87.txt :
113      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
114      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
115      process. Fixed here by closing the domain at the Northern boundary.
116    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
117    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
118      a set of consecutive levels in/from a 3-D array.
119    o pkg/ptracers:
120      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
121      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
122    
123    checkpoint59j
124    o in pkgs: dic, obcs, offline, rbcs:
125      standard way to compute coeff. for time interpolation between 2 time reccords
126      which retains full precision (& make results less dependent on compiler).
127      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
128    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
129      packages instead of reading ice cover and wind speed separately
130    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
131     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
132      to allow to compile customized code before the update)
133    o cleaning-up:
134      - fix CPP instruction syntax in pkg/obcs
135      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
136        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
137      - fix some threads issue in IO parts.
138    o pkg/dic:
139      - add tons of "_d 0" (--> much better testreports !)
140       and then update outputs of tutorial_global_oce_biogeo
141    o pkg/mom_fluxform:
142      add a special version of momentum advection intended to conserve momentum
143      next to a bathymetry step or a coastline edge. (default = off = #undef)
144    o new read/write pickup version:
145      - for now, only implemented for main (mdsio) pickup file.
146      - write out only what is needed to restart; merge pickup_nh , pickup_ph
147        and main pickup together.
148      - read meta file; read only what is needed to restart; stop if a field
149        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
150        if it make sense (even if the restart is not perfect).
151      - if no meta file, assume that pickup to read corresponds exactly to
152        a pickup that would currently be written.
153      - read pickup written in the old format (until checkpoint59i) if it
154        recognizes an old meta file (no field-list).
155      - add a meta file in exp. which starts from a pickup: 2 cases:
156        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
157         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
158        b) a meta file describing the content of the associated pickup file
159         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
160    o pkg/mdsio & pkg/rw:
161      - new routine to read a meta file ; new set of routine to read
162        Multiple-fields file (with meta file).
163    o added open boundary conditions capability for seaice
164        HSNOW, HSALT, UICE, and VICE
165    
166    checkpoint59i
167    o adjoint:
168      * fix multiDimAdvection adjoint
169        (partial recomputation problem by TAF for fVerT(:,:,kDown)
170        and comlev1 size definition (maxpass vs. max. number of tracers)
171      * verification/global_ocean.90x45x15 adjoint now tests
172        NLFS and multiDimAdvection using DST3 (=30)
173      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
174    o pkg/kpp: add "_d 0" to real constant (if missing);
175      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
176      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
177    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
178      for internal parameters related to restart process (formerly from PARAMS.h)
179      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
180    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
181      as argument. (only atm2d & obcs write_pickup have not yet been updated)
182    o pkg/monitor:
183      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
184      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
185      - account for deep Atmosphere factor and density factor (anelastic)
186    o added open boundary conditions capability for seaice HEFF and AREA
187    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
188      thermodynamics
189      - requires a little reorganization, which affects the testreport results
190        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
191        so that now the conservative form is tested
192      - add a few comments
193    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
194    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
195    o add new diagnostics to seaice: advective, diffusive fluxes (only for
196      multidim-advection, for scheme 2 they are not filled) and transports,
197      thermodynamic growth rates
198    o change units of EmPmR (inside the code, + within coupling interface)
199      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
200      Affects results @ truncation level (cg2d match) and update output of
201       experiments: lab_sea(6), global_ocean.90x40x15(10),
202      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
203      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
204      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
205      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
206    
207    checkpoint59h
208    o pkg/exf:
209      - improve vectorization by moving if-statement out of loops in
210        exf_mapfields, exf_radiation
211      - exf_bulkformulae.F: introduce 2D fields and vectorize code
212    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
213    o testreport:
214      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
215        monitor & update offline_exf_seaice exp. output.
216      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
217    o pkg/seaice:
218      - bug fix in the evp solver: boundary conditions were affected be
219        masking of zMax/zMin (changes results)
220      - minor bug fix in boundary conditions in seaice_calc_strainrates
221        (changes results for no_slip)
222      - seaice_lsr.F: make interpolation of eta dependent on boundaries
223      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
224      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
225        stress formulation and no-slip boundary conditions
226    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
227      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
228    o pkg/seaice: a first HSALT time stepping equation has been checked in
229    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
230      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
231      without requiring DO-IF statements
232    o pkg/thsice:
233      use continuous power-law function for partition of energy between lateral
234      melting/freezing and thinning/thickening ; old code using step function
235      still available with #undef THSICE_FRACEN_POWERLAW
236      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
237    o testreport: change AD testing : check against results/output_adm.txt
238      using same scripts as for forward test.
239    
240    checkpoint59g
241    o adjoint testing: in preparation for changing testreport:
242      - output format: cost and grad written on separated lines
243      - ad output results in directory "results" (instead of "results_ad")
244    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
245    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
246    o pkg/ecco: allow user defined cost function contributions
247    o testreport:
248      Allow to choose (per experiment) the list of tested output variables
249       and the main variable (used to issue a pass/FAIL ) ;
250      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
251      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
252      Also modify printing of summary:
253       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
254       b) echo the list of tested variables in the individual summary.txt of
255          each experiment.
256    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
257      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
258      (but still depend on the tile decompostion of the domain).
259    o pkg/seaice: change a discretization detail to make the B-grid code
260      "more symmetric". This change is likely to remove all "ridges/leads" that
261      where quasi-aligned with the grid in B-grid solutions. It may also be
262      the solution to the stress coupling issues with the B-grid.
263    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
264      remove .cvsignore from input dir. (since testreport no longer run here).
265    o pkg/thsice:
266     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
267     - fix reshaping of sea-ice just after advection:
268       melt all the ice only if ice-volume is too small.
269     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
270       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
271     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
272    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
273      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
274    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
275      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
276      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
277      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
278      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
279      -> update output.txt
280    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
281     this affects truncation error: -> update output.txt of exp:
282      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
283      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
284    
285    checkpoint59f
286    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
287    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
288      a bounded range (in forward mode)
289    o pkg/ecco, ctrl, autodiff and mom_common:
290     internal parameter controls, completements of implementations
291    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
292    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
293      (not seem any difference in testing results).
294    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
295       at face corners.
296    o pkg/generic_advdiff:
297     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
298      loop range indices for computing vertical advection tendency
299      and do the calculation in the interior only (no overlap) ;
300      for now, only implemented for SOM advection (to save CPU time).
301     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
302    o exch2 adjoint
303      First set of changes:
304      - add exch2 hand-written adjoint templates
305      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
306        This will require cleanup in pkg/autodiff/*.F
307        (changed routines currently kept separate in verif. code/)
308      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
309        that used to hide exch2 or cubed-sphere specific code
310        (commented via 'cph-exch2')
311    o pkg/seaice
312      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
313    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
314       output of global_ocean.cs32x15.thsice .
315    
316    checkpoint59e
317    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
318      for B-grid vector (not yet tested) and C-grid vector (<- only used
319      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
320    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
321      (#ifdef ALLOW_SALT_PLUME)
322    o gather_2d/scatter_2d: removed halo regions
323    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
324      scheme and the corresponding test case (under front_relax dir). For now,
325      only available with Skew-flux form and not yet tested in realistic set-up.
326      adjoint: store directives updated, but gradient checks deteriorated,
327      so maybe GM/Redi adjoint is now broken.
328    o seaice adjoint
329      * add AREA, HEFF, HSNOW as control variable
330        (should not change lab_sea results)
331      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
332    o pkg/seaice:
333      * added computation of saltFlux in seaice_growth;
334        For time being, sea ice salinity is assumed constant
335        contribution of snow flooding to freshening of sea ice is neglected.
336        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
337        defaults to 0.0 in order to maintain backward compatibility.
338        Typical values for SEAICE_salinity are 4 to 10 g/kg.
339      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
340      * added SEAICE_availHeatFrac, which specifies fraction of surface level
341        heat content used to melt or grow ice
342      * commented out cap of HICE: it helps keep ice thinner
343      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
344      * applied OBCS T/S mask to HEFFM sea ice mask
345    
346    checkpoint59d
347    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
348     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
349     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
350    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
351     and change default value of parameter "GM_Small_Number";
352     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
353       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
354       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
355    o pkg/ecco: cost function when applying pkg/smooth to controls
356    o pkg/ctrl: add forcingPrecond run time parameter
357    o pkg/seaice:
358     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
359     - fix bug in metric terms of u-equation in LSR solver (implicit part),
360       changes verification/lab_sea
361     - rearrange implicit part of u-equation in LSR solver to make it easier to
362       read, understand, and debug. This causes changes at the truncation level.
363     - fix (serious) bug in the boundary conditions (sign error in the implicit
364       part) of the LSR solver. Changes all LSR results.
365     - fixed problem with HSNOW initialization to avoid thick snow when AREA
366       is initilized with small values - does not change lab_sea results.
367     - added HsnowFile initialization capability
368    o pkg/smooth: addition to model/src and pkg/ctrl so allow
369     initialization of pkg/smooth and application to control vector
370    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
371    o dependencies: pkg/profiles requires pkg/cal
372    o pkg/profiles:
373     - added option ALLOW_PROFILES_GENERICGRID
374         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
375         that interpolation information (grid points and coefficients) is provided
376         within the netcdf input files.
377         -> sample matlab scripts can be found in MITgcm_contrib/gael
378         that allow you to prepare netcdf input files.
379     - also modified: cleaner include statements, cleaner error print statements,
380       cleaner stops when error, and more tests of the netcdf input files consistency.
381    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
382    o pkg/seaice:
383     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
384       requires a new routine: seaice_diagnostics_fill.F
385     - make sure that seaice does not move if not forced (pressure replacement
386       method, Hibler and Ip, 1995), changes results
387     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
388     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
389       It is turned off by default (=-1.), because it changes the results.
390     - make it possible to read AREA from a file, too.
391    
392    checkpoint59c
393    o add S/R and diagnostics for oceanic mixed-layer depth
394    o move GMRedi call after all vertical mixing schemes (including KPP)
395    o pkg/thsice:
396     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
397      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
398    o pkg/obcs:
399     - bug fix for balance code
400    o pkg/seaice:
401      - allow values of SEAICE_elasticParm > 1
402      - add new parameter SEAICE_evpTauRelax as an alternative
403        to SEAICE_elasticParm
404      - make lsr boundary conditions free slip (by default), changes result
405      - add code for no slip boundary conditions for lsr
406      - set minimum of zeta to zero (and not 4e8) (changes results)
407      - add a cap on AREA after advecting AREA if seaice_growth is not called
408    o change calculation of Visbeck K:
409      - no longer depend on tapering scheme; instead, compute slope (limited
410        by GM_maxSlope). this is equivalent to what was comuted before with
411        clipping or linear tappering.
412      - fix vertical averaging (wrong by 1/2 level)
413      - leave the old version (but will not be maintained) within
414        #ifdef OLD_VISBECK_CALC / #endif
415      - update output of exp. ideal_2D_oce
416    o change error catch in calc_r_star to improve vectorization
417    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
418      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
419    o adjoint:
420      Re-organized adjoint checkpointing according to Matt Mazloff
421      (but with modifs/completions/cleanups)
422      Storing is now bundled into large arrays to optimized I/O
423      (and second step in cleanup of the_main_loop)
424    
425    checkpoint59b
426    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
427      - export/import (between ocean & coupler) fields needed for ocean DIC.
428    o pkg/seaice:
429      - get rid of three more exchanges seaice_calc_viscosities (required
430        different loop boundaries in seaice_lsr and seaice_ocean_stress)
431      - bug fix in seaice_ocean_stress (update of lab_sea required)
432      - reduce loop boundaries to necessary minimum also in seaice_evp
433      - go back to the old way of computing deltaC/Z as the adjoint likes that
434        better
435    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
436      passive tracer to an Age Tracer) + update output.txt
437    o pkg/exf:
438      - implement A-grid / C-grid selection for wind-stress input files.
439      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
440      for now, in exf_bulk_largeyeager04.F only :
441      - change implementation for case where windspeed + 2. components wind-stress
442        are read-in. AND use rhoConstFresh to convert evap.
443    o pkg/seaice:
444      - use correct EXCH_UV for wind-forcing (on A-grid).
445      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
446        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
447    o pkg/exf:
448      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
449      EXF_INTERPOLATION:
450      - merge global_with_exf/code version of exf_interp_read.F
451        to the main code ;
452      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
453        reading the file ; Important: This options needs to be defined to recover
454        previous code.
455        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
456      - no longer loose real*8 precision along the way when using exf_iprec=64.
457    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
458      - change discretisation of evp-solver in order to avoid another exchange
459        (changes lab_sea) and clean up a little
460      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
461        help the adjoint (this also changes the results slightly)
462      - add a few "_d 0" where they had been missing in seaice_evp.F
463      - cleaning up: remove unused seaice_calc_rhs.F
464    o pkg/exf: some cleaning-up:
465      - change various "constants" into runtime parameters
466      - cleaned-up Large&Yeager04 routine which should eventually
467        replace exf_bulkformulae.F (changed names of S/R and CPP)
468        and merged various ALLOW_ATM_WIND options
469     only used with thsice pkg (in thsice_get_exf.F):
470      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
471        which are used when useStabilityFct_overIce=TRUE (= the default)
472      - change default values of ice & snow emissivity and scale downward LW
473        by ice & snow emissivity.
474    o pkg/thsice:
475     fix few little problems, in thsice_calc_thickn.F:
476      - growth vertically (and not laterally) if iceFrac == iceMaskMax
477      - melt only laterally if hIce < hThinIce (as the comments say)
478      and in thsice_extend.F:
479      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
480      - start to form ice as soon as the minimum ice-volume is reachable.
481     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
482      and cpl_aim+ocn
483    o pkg/kpp
484     - move computation of surface related input fields to KPP into a new
485       subroutine kpp_forcing_surf.F
486     - remove wrong (within bi,bj loops) EXCH calls.
487     - little cleaning (add argument myThid in last position, cvs header ...)
488     - for now, fix conservation problem by exchanging KPPviscAz (may not
489       be the best fix)
490    o pkg/seaice
491     - check for inconsistent evp parameter/cpp-flag combination
492     - remove leftover errIO flat for obsolete name list error handling
493    o OpenAD
494     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
495    
496    checkpoint59a
497    o pkg/seaice: some parameter clarifications and a little bit of clean up
498    o pkg/thsice: rename run-time parameters:
499       himin       -> hIceMin
500       himin0      -> hThinIce
501       hihig       -> hThickIce
502       i0          -> i0swFrac
503       transCoef   -> bMeltCoef
504       frac_energy -> fracMelting
505      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
506       with default values (for now) that do not change the results.
507      remove old version of thsice vars advection in pkg/seaice.
508    o in FFIELDS.h:
509      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
510      - make pLoad & sIceLoad always available (but still only used if
511         ATMOSPHERIC_LOADING is #define).
512    o pkg/kpp: replaced _KPP_RL with _RL
513    o bug fixes for vertical diffusivity computations when both KPP and
514        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
515        are no longer updating the vertical diffusivity array
516        (passed as argument) but are (re-) setting those arrays.
517    o pkg/seaice: fix bug in evp solver, while doing that
518      - change (improve?) discretization of stress computations for both
519        cgrid-lsr and evp solver
520      - add a new routine to compute strain rates
521      - the above changes lab_sea results
522      - add no slip conditions for evp solver (off by default), lsr-version
523        may follow
524      - fix exchange for shear at Z-points (does not change lab_sea)
525      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
526        (to force the user to pick a time step since there is not "safe" way
527        of choosing it)
528      - add principal stress diagnostics
529      - rearrange fields for evp a little to avoid having to call a: too many
530        exchanges and b: exchanges for stress trensor components which we do
531        not have.
532      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
533        of evp, complete rewrite for lsr case (latter is does not yet work
534        in all cases)
535    o pkg/kpp: add code to have mixing in shelf ice caverns
536      - add myThid to all kpp routines (long overdue)
537    
538    checkpoint59
539    o pkg/exf:
540      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
541        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
542      - move exf header files from lower_case.h to UPPER_CASE.h ;
543        add missing cvs Header & Name
544      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
545      - add namelist param. selectStressGridPosition, exf_monFreq
546      - retire many _CLIM routines, and remove data.exf_clim
547        + params moved to data.exf
548        + climsst, climsss now handled by exf_set_gen, i.e.
549          climss?period=0 refers to constant field,
550          climss?period=-12 to monthly forcing
551      - split up namelists in data.exf
552    o pkg/seaice:
553      - remove seaice_exch and seaice_exch_uv
554      - remove superfluous exchange of theta
555      - add myThid to seaice_budget_ocean/ice
556      - add new interface for atmospheric wind forcing (C-grid only)
557        + new routine
558        + two new field (taux, tauy for stress over ice)
559        + removed one global field (DAIRN) for C-grid case only
560    o pkg/thsise
561      - 2nd set of modifs for thsice adjoint in conjunction with exf
562    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
563    
564    checkpoint58y_post
565    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
566      vertical diffusivity, similar to that in MOM4; turned on using
567      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
568      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
569    o Added capability for 3D specification of background vertical diffusion
570      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
571      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
572      "data" file that contains the 3D vertical diffusivity coefficients.
573    o ice dynamics (pkg/seaice) with thsice thermodynamics:
574      - add code within pkg thsice to advect & diffuse sea-ice fields
575      similar to (and will replace) what has been added in  seaice_advdiff.F,
576      but: - conserving Mass, Heat & Salt.
577           - better when using non-linear advection scheme (not yet fully tested)
578           - can also be used in atmospheric set-up (for now, only the diffusion).
579    
580    checkpoint58x_post
581    o IO option for global-file compact format:
582      - add options when generating topology (utils/exch2/matlab-topology-generator)
583      - add I/O capability (pkg/mdsio).
584      - adapt utils/matlab/rdmds.m to read this format.
585      for now long-line format not yet supported by pkg/mdsio (& exch2).
586    o shelfice: add a few diagnostics
587    
588    checkpoint58w_post
589    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
590      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
591      (and replace horiVertRatio in NH code).
592      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
593                         and tutorial_plume_on_slope (sensitive to truncation)
594    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
595      directly to drive seaice model (C-grid only)
596    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
597     - reintroduce computation of wind from stress,
598     - compute tau (in exf_bulkformulae.F) from windstress averaged to
599       mass points to avoid tau = 0
600     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
601    o rdmnc.m: make it work with "global" files created with gluemnc
602    o rdmnc.m : some improvements in dealing with singleton dimension
603      (tested on all testreport mnc output files).
604    o genmake2: disable pkg/profiles if netcdf test fails.
605    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
606    o move call to cal_readparms up to make calendar parameters/variable available
607      to all packages
608    
609    checkpoint58v_post
610    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
611      useDynP_inEos_Zc tested.
612    o pkg/exf: changes to properly interpolate/mask/scale initial fields
613    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
614      and portions thereof.  See read_cs.txt for description and examples.
615    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
616      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
617      following the great-circle arc between those 2 points.
618    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
619      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
620    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
621     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
622     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
623     - still needs work (not working with some options ; efficiency to improve)
624       and serious testing.
625     - use this scheme for temperature & salinity in 2 advection test exp.:
626       advect_xy & advect_xz, respectively.
627    
628    checkpoint58u_post
629    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
630    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
631    o testreport: add option "-skipdir" to skip some test.
632    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
633      momentum calculation.
634    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
635    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
636      remove checkpoint.F and the_correction_step.F (no longer used);
637      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
638    o add option (linFSConserveTr) to correct for tracer source/sink due to
639      Linear Free surface
640    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
641    o pkg/thsice: fix reading mnc-pickups
642    
643    checkpoint58t_post
644    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
645    o pkg/mdsio:
646     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
647       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
648       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
649     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
650     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
651       either MDS_READ_FIELD or MDS_WRITE_FIELD )
652     - new S/R (to replace MDSWRITEMETA), which allows to write more
653       informations (variable names, time ...) to meta files.
654     - modify rdmds.m to give back the meta file content.
655    o pkg/diagnostics: change vertical interpolation to be safer, and more
656       flexible (define p-levels to interpolate to in data.diagnostics);
657      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
658       diagnostic pointer.
659    o pkg/seaice: more cleaning up of seaice_growth, added many comments
660    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
661    o fix multi-category seaice:
662     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
663       SEAICE_MULTICATEGORY
664     - fix short wave heat flux
665    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
666       and allow to use EVP solver. Change forward lab_sea: test both EVP
667       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
668    o Initial check-in of lab_sea adjoint
669      (very similar to natl_box_adjoint/code_seaice)
670      * used C-grid and EVP solver
671      * used KPP, GM/Redi
672      * uses inAdExact=.TRUE.
673      * gradient checks fail for both ADM and TLM
674        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
675        f.d. gradients actually seem more problematic than ADM, TLM gradients;
676        issue is related to forward mismatch between g77 an ifort
677    o pkg/seaice: overhaul of thermodynamics
678     - growth.F and groatb.F are replaced by new routine seaice_growth.F
679     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
680     - move a few global fields out of SEAICE.h into seaice_growth.F and
681       make them 2D (FICE/QNETO/ ...)
682     - remove FO (it is the same as QNETO)
683     - introduce a few local fields to avoid modifying external fields such
684       as atemp, etc.
685    
686    checkpoint58s_post
687    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
688      changed exf_set_gen.F so that
689        genperiod=0 means input file is one time-constant field and
690        genperiod=-12 means input file contains 12 monthly means
691    o CG2D: use pre-computed solver main-diagonal (stored in common block);
692      this affects truncation error ; generate new output file for exp. which
693      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
694        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
695        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
696        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
697        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
698        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
699    o start implementation of deep-atmosphere and anelastic formulation
700    o verification: remove 2nd copy of input files and use script "prepare_run"
701      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
702    o mom_common/vecinv/fluxform: fix a few initialisation isssues
703    o profiles: fix for multithreaded case
704    
705    o diagnostics: rename few diags:
706      s/'PRESSURE'/'RCENTER '/g
707      s/'TICE    '/'oceFreez'/g
708      s/'TAUX    '/'oceTAUX '/g
709      s/'TAUY    '/'oceTAUY '/g
710      s/'SWFLUX  '/'oceQsw  '/g
711      s/DIFx/DFxE/g
712      s/DIFy/DFyE/g
713      and add few ocean-forcing diagnostics:
714      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
715    o modifications to pkg/seaice/growth.F and budget.F, which change results of
716      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
717      as actual snow thickness.  It now refers everywhere to effective snow
718      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
719    
720    checkpoint58r_post
721    o modifications to pkg/seaice/growth.F, which change results of
722      lab_sea experiment: fixes pertain to melting snow over open water, to
723      masking EVAP under sea ice, and to using the correct AREA variable for
724      computations of EVAP, PRECIP, HSNOW, and GHEFF
725    o add ability to read bathy, salt, and theta using MNC (off by def)
726    o add flooding algorithm and advection of HSNOW for pkg/seaice;
727      both are turned off by default and do no change any results
728    o seaice advection with pkg/thsice: a step toward the use of non-linear
729      advection scheme, but #ifdef or commented out for now (requires more EXCH).
730    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
731      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
732      in natl_box (affects results @ truncation level: update output.txt)
733    o multi-threading and IO:
734      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
735      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
736        (needed to work with SingleCpuIO): tested in all verif. exp.
737    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
738      affects the results (but none of the verification test uses this scheme).
739    o Adding some pkg/diagnostics capability to pkg/seaice
740      (will certainly be subject to changes)
741    o ctrl: adding new control variables:
742      lwflux, lwdown, evap, snowprecip, apressure, runoff
743    
744    checkpoint58q_post
745    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
746      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
747      high_res_cube configuration by 4% on Columbia.
748    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
749      add (in global_with_exf/code) a version of EXF_INTERP_READ without
750      dynamical allocation (seems to work in multi-threaded).
751    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
752      single CPU io) so that TAF does not have to see EESUPPORT.h
753    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
754    
755    checkpoint58p_post
756    o obcs: stop if obcs is used with useCDscheme = .true.
757    o shelfice:
758     - fix a sign error so that no slip at shelfice interface works
759     - remove stop for combination non-hydrostatic code and shelfice. That does
760       not mean, that the results are correct, but at least they are numerically
761       stable
762    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
763    o added adjoint exch routined for all exch*3d* routines
764      and updated flow directives
765    
766    checkpoint58o_post
767    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
768      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
769    o change controling S/R for writing pickup file (new S/R do_write_pickup)
770      and clean-up reading/writing of pickup files.
771    o fix local version of read/write pickup (NH part) in rotating_tank/code
772    o simplify EXCH interface:
773     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
774     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
775    o added the regrid package
776    o shelfice:
777     - add a simple boundary layer scheme to reduce noise
778     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
779    
780    checkpoint58n_post
781    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
782       local variable (not in common block).
783    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
784      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
785      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
786        to work with SingleCpuIO.
787    o add "_d 0" to real constant of pkg/cfc subroutines ;
788       update exp. cfc_exemple & tutorial_cfc_offline output files.
789    o multi-threading and IO:
790      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
791        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
792      - barrier before and after reading.
793      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
794      - avoid using MDS_WRITELOCAL for LAND pkg output.
795      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
796        common-block variables ; Allows multi-threading with master-thread IO.
797    o change default MAX_NO_THREADS from 32 to 4 ;
798      and stop cleanly when MAX_NO_THREADS is too small.
799    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
800    
801    checkpoint58m_post
802    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
803       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
804    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
805       keep global_ocean.90x40x15 (for AD testing) with former secondary test
806       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
807    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
808        add MITgcm_tutorials (= code + all the tutorials)
809    o ecco, option to compute cost for total ssh (mean+anom)
810    o consistent with addition of ptracer and ssh in pkg/profiles
811    o profiles: adding ptracer and ssh
812    o testreport: change multi-test output-file name
813      (from output.txt.{name} to output.{name}.txt)
814    o profiles: now ok for mutli-tiles case
815    o seaice: add 4 parameters for different advection schemes for area,
816      (effective) seaice thickness, enthalphy, and snow height. Their default
817      is the standard parameter SEAICEadvScheme
818    o calc_gw:
819     - add cosFacU in zonal viscous flux (harmonic.visc.).
820     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
821       of tutorial_plume_on_slope.
822    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
823    o calc_gw: true flux-form, account for horizontal grid spacing.
824      update rotating_tank results, but not plume_on_slope (affected at
825      truncation level, 11 digits).
826    
827    checkpoint58l_post
828    o calc_gw:
829     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
830     - remove side-drag for now (need to fix it); update plume_on_slope results.
831     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
832    o commit code to make SST/SSS weights spatially variable
833      (based on either variable in-situ or variable initial T/S weights)
834    o pkg/ecco:
835      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
836        now based on horizontally varying weights wthetaLev, wsaltLev
837      * cost_averagesflags now returns year indices in addition to day, month
838      * sflux balance is performed on annual basis
839        (sflxumm, sfluxmm2, bal_sfluxmm)
840      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
841        including separate counting and multipliers
842    o pkg/rbcs
843      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
844    
845    checkpoint58k_post
846    o testreport:
847     - always build in dir. "build" (if not there, mkdir build instead of building
848       & running in input)
849     - run in dir run (if it exists), in build otherwise.
850     - call prepare_run (if input/prepare_run exists)
851     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
852    o pkg/exf modifications to interpolation and rotation routines for more
853       reasonable treatment of North Pole singularity: for tracers North Pole
854       value is set to northernmost zonal-mean value, for zonal velocity it is
855       set to zero, and for meridional velocity it is set to northernmost value.
856    o pkg/exf/exf_check_range.F
857     - add tile index to diagnostics and move stop statement to the very
858       end of the routine.
859    o pkg/diagnostics: (diagnostics_main_init.F)
860      define title of isomorphic variables according to the current config.
861    o pkg/thsice with pkg/seaice dynamics:
862    - fix domain of computation (interior only, required for exf) and do exchanges
863    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
864    o towards a standard way of dealing with multi-threading in MONITOR
865      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
866    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
867       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
868    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
869    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
870    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
871       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
872    o tracer advection:
873     - clean-up and simplify calc_common_factors.F
874     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
875       advection subroutine (but still not used within DST advection S/R)
876    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
877    
878    checkpoint58j_post
879    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
880      from file (collects calls previously in FORWARD_STEP)
881    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
882    o adjoint store dir. adjusted accordingly
883    o genmake2
884      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
885    
886    checkpoint58i_post
887    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
888      on wind stress (SEAICEstressFactor defaults to 1.)
889    o Total number of Timers is finite (<=40): comment out 2 non-essential one
890      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
891    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
892      on CS-grid: no longer loosing mass.
893    o exf & curvilinear-grid: no longer modify longitude xC & xG.
894    o pkg/ggl90: fix sloppy output and fix a bug
895    o pkg/seaice: added SEAICEuseEVPpickup parameter
896      - Set to false in order to start EVP solver with
897        non-EVP pickup files when using SEAICEuseEVP
898      - fix sign error in diffusion in seaice_calc_rhs
899    
900    checkpoint58h_post
901    * Modifications for bottom topography control
902      o replace hFacC by _hFacC at various places
903      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
904      o add non-self-adjoint cg2d_nsa
905      o update autodiff support routines
906      o re-initialise hfac after ctrl_depth_ini
907      o works for 5x5 box, doesnt work for global_ocean.90x40x15
908    * Adding verification for 5x5 box (4-layer) bottom topography control
909    
910    checkpoint58g_post
911    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
912       used for mean seasonal cycle, mean diurnal cycle); add an example
913       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
914    o pkg/ggl90:
915      - add parameter (minimum surface kinetic energy)
916      - fix bug (avoiding division by zero)
917    o couple pkg/thsice to pkg/seaice:
918      - modify advection in seaice to accomodate new scalar fields to be advected
919      - only muliDimAdection scheme work with seaice/thsice
920      - mapping of thsice-variables to seaice-variables, back and forth
921      - does not break the verification experiments, but does not give the
922        desired results either
923    o pkg/seaice
924      - make (default) second order advection a bit less confusing?
925    
926    checkpoint58f_post
927    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
928      to pkg/seaice):
929      - new routines thsice_map_exf and thsice_get_exf provide the interface
930      - add an additional formal parameter to thsice_solve4temp
931    o pkg/exf:
932      - add new fields wspeed, snowprecip (to be able to couple to thsice)
933      - correct Stefan-Boltzmann constant
934      - new parameter for longwave surface emittance
935      - separate some stuff from exf_bulkformulae into new routines  
936        exf_radiation, exf_wind
937      - add new parameters and constants: longwave emissivity for ocean, ice
938        and snow, evaporation parameters over ice
939      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
940        either wind from stress or stress from wind
941    o pkg/thSIce:
942    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
943    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
944       and THSICE_CALC_THICKN
945    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
946    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
947      to make debugging easier.
948    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
949    o pkg/bulk_force:
950      - clean-up comments and parameters ;
951      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
952    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
953      generate new output for test-experiment: aim.5l_cs.thSI
954    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
955      testreport accordingly
956    
957    checkpoint58e_post
958    o SEAICE_CGRID adjoint done
959    o R_STAR adjoint implemented.
960      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
961      * need to sort out init. of h0facc, etc.
962    o Make pkg/profile fully independent of ecco,cost, etc. stuff
963      to be able to use it in pure forward.
964    
965    checkpoint58d_post
966    o upgrade simple test-experiment to tutorial example:
967     step.1: duplicate the experiment and (step.2) will remove the old copy.
968      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
969      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
970      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
971      tutorial_global_oce_biogeo    <- copy of dic_example
972      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
973      tutorial_plume_on_slope       <- copy of plume_on_slope
974      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
975      tutorial_global_oce_optim     <- empty for now (David ?)
976      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
977     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
978    o correct a sign problem in cost_scat.F
979    o obcs and ptracers: fix boundary conditions for advections schemes
980      with larger stencil
981    o thsice adjoint: start
982    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
983      completeness
984    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
985      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
986    o ptracers adjoint:
987      * avoid extensive recomputatations
988      * fix missing re-init. of gptr (missed by TAF)
989    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
990      me to turn off the excessive output to STDOUT that this package produces
991    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
992      and add those terms in Vector-Invariant formulation.
993    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
994      if the control period (xx_hfluxperiod etc) is 0
995    o in profiles pkg, clean routines and fix details
996    o in ecco pkg, reading ssh data:
997      fix problem in case the model does not start at iter0=0
998    o fix mnc-pickup/restart for ptracers
999    o new package prifiles:
1000      code to compute profile-based cost by Gael Forget
1001      (modifs in ecco, ctrl, autodiff)
1002    o Benign bug fix in initialization (spotted by M. Mazloff) of
1003      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1004    
1005    checkpoint58c_post
1006    o adjoint: finish NLFS adjoint and provide reference output in
1007      verification/global_ocean.90x40x15/results_ad_nlfs
1008    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1009      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1010      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1011      with SEAICE_CGRID defined.
1012    o move calendarDumps from "data" to "data.cal" and clean-up the code
1013      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1014    o add useEXF & useCAL flags (for now, set in hard-coded way)
1015    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1016      (were missing in NH mode, and wrong in quasihydrostatic mode).
1017      waiting for Chris updated version of calc_gw to add those CALLs.
1018    o fix bug in quasihydrostatic S/R ;
1019      add a test for this option: global_ocean.90x40x15.qshyd
1020    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1021      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1022    o add on/off flag useOffLine for package OFFLINE
1023    o seaice:
1024      - modify advection so that it works also on the C-grid
1025      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1026        problem in multi-tile runs with C-grid
1027      - add flags for clipping ice velocities and/or masking solver forcing
1028      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1029        C-grid solver
1030      - added a few comments to seaice_diffusion.F
1031      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1032        are now exclusive)
1033      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1034        required re-ordering the code a little:
1035       + make DAIRN global variable (defined in SEAICE)
1036       + move computation of the viscosities eta and zeta into a new separate
1037         routine (because I need to recompute them in seaice_ocean_stress.F)
1038    
1039    checkpoint58b_post
1040    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1041      update output.txt of exp. aim.5l_cs.thSI
1042    o various mnc cleanups and improvements:
1043      + shrink lookup tables by factor of ~4
1044      + better error reporting when running out of lookup space
1045      + able to handle longer path/file names (up to 500 chars)
1046    o adjoint:
1047      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1048      - TBD: "hidden" mom_vecinv recomp. in dynamics
1049    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1050     (allow to differentiate between forcing components using new integer flags:
1051      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1052     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1053    o ecco
1054      - enable trend removal from SSH anomaly obs.
1055    o adjoint
1056      - a fix for PmEpR when #undef EXACT_CONSERV
1057      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1058      - try to fix "hidden" recomp. in forward_step for NLFS
1059        (NLFS seems broken sometimes after I checked it in)
1060    o seaice:
1061     - add c-grid version of the dynamic solver:
1062       + three new routines that are the c-grid substitute lsr, dynsolver
1063         and ostres
1064       + put a few fields that were local to dynsolver into global common
1065         blocks, so that I can move the computation of stresses etc into
1066         seaice_lsr (saves coding but may break the adjoint).
1067     - replace more hardwired parameters by runtime parameters
1068     - add ice masks that mask the rhs of the implicit solvers where there
1069       is no ice (commented out in seaice_dynsolver, because i am not sure
1070       if this works properly), eventually this should replace the clipping
1071       of ice velocities in seaice_dynsolver to +/-40cm/s.
1072    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1073      include it only where its needed
1074    o move balancing of fluxes before the call of external_forcing_surf
1075    o seaice:
1076      - correct units of turning angles (now they are really in degrees)
1077      - move computation of GWATX/Y out of main routine into dynsolver
1078      - initialize GWATX/Y in seaice_init
1079    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1080      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1081    o seaice: add runtime flags for turning angles (default to zero)
1082    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1083      and trend from exf forcing and ctrl control adjustments
1084    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1085      (since checkpoint57x_post)
1086    o change the default rotation period to 86164.s = the Earth rotation
1087    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1088      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1089    o seaice advection: add code for choosing between the default (2nd order
1090      central differences) and multiDim advection schemes provided by
1091      pkg/generic_advdiff
1092    o seaice:
1093      - removed all references to SEAICE_GRID.h fields from
1094        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1095        (cubed-sphere configuration will change a little)
1096      - grid computations in seaice_init are obsolete now.
1097      - cleaned up code a little so that is easier to read (hopefully).
1098      - added new (better?) discretizations of default advection and diffusion
1099        (turn on with SEAICEuseFluxForm)
1100      - replace 1 in 3d global fields by kSurface in growth.F
1101      
1102    checkpoint58a_post
1103    o seaice:
1104      - bug fix in advect.F
1105    o shelfice:
1106      - separate shelfice load anomaly from pload (breaks with time
1107        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1108        Its default is 0., but it may be computed more cleverly from (unknown)
1109        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1110        done offline. A good approximation of the pressure load anomaly is
1111        necessary to avoid large initial adjustment processes underneath
1112        deep-reaching shelfice.
1113      - small fix in ISOMIP shelfice_thermodynamics
1114      - add more sophisticated thermodynamics of Hellmer (1989), this is
1115        now the default
1116      - give a few constants more intuitive names
1117    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1118      if bulk formulae are used in long integration (especially EmPmR). Turn
1119      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1120      if balancePrintMean, the imbalance that is substracted is printed to
1121      STDOUT.
1122    o fix bug (typo) in obcs_apply_eta.F
1123    o add a new package shelfice which enables us to model the circulation
1124      underneath shelf-ice with draughts of hundreds of meters.
1125     - works
1126     - to do: + include improved thermodynamics
1127              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1128                instead of new field kTopC
1129              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1130                instead of new field R_shelfIce and new code in ini_depth.F
1131                and ini_mask_etc.F?
1132              + adjust vertical mixing schemes?
1133    o seaice pkg:
1134     - add a cpp-flag to include a simple formula for a salinity dependent
1135       freezing point of sea water at the surface
1136     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1137       meridional stresses are now different (and hopefully correct)
1138    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1139       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1140       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1141    o pkg/diagnostics: add options and parameters for regional-statistics
1142       diagnostics ; define regions by reading a region-mask from a file
1143       (might add other options later)
1144    o pkg/bulk_force:
1145     - add option and parameters to use AIM surface-flux formulae.
1146     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1147       others forcing fields (defined in PARM05, parameter file "data") are loaded
1148       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1149     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1150     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1151     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1152       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1153     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1154    
1155    checkpoint58
1156    o add "--embed-source" option to genmake2 which, when the supporting
1157      tools can be compiled (as determined by genmake2) will turn on the
1158      embed_files package which then embeds the entire MITgcm source code
1159      (*.[fFhc] + Makefile) used for the build within the executable
1160      - requested by CNH but off by default
1161      - adds a paltry <9MB to the mitgcmuv executable in most cases
1162      - only writes the output when useEMBEDSRC in eedata is true
1163    o clean up 3-dim. relaxation codes:
1164      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1165      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1166      * Thanks to Tom Haine for testing!
1167    
1168    checkpoint57z_post
1169    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1170      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1171    o fix the pickup behavior for obcs in combination with ptracers
1172    o fix a bug in ptracers_external_fields_load
1173    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1174      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1175    o transfered surface NH pressure to eta field (if exactConserv).
1176    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1177         and update lab_sea output.txt file.
1178    o completing 3-dim. relaxation code: additional term
1179         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1180      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1181      * At compile time, in "EXF_OPTIONS.h" set
1182          #define  ALLOW_CLIMTEMP_RELAXATION
1183          #define  ALLOW_CLIMSALT_RELAXATION
1184      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1185          tauThetaClimRelax3Dim = 15552000.0,
1186          tauSaltClimRelax3Dim  = 15552000.0,
1187      * 3 cases:
1188          1) Use a constant-in-time 3-dim. field
1189          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1190          3) Real-time relax. to time-evolving prescribed field
1191    o Adding Laplacian-type smoothness constraint on
1192      initial and boundary (forcing) controls (ic, bc)
1193      * enable at compile-time via
1194        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1195      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1196      * Absolute scale somewhat unclear so far
1197      * no area weighting was included since no other cost term does so far
1198    
1199    checkpoint57y_post
1200    First step for a NLFS adjoint
1201    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1202    o new init. routines for calc_r_star, calc_surf_dr
1203    o still need to deal with ini_masks_etc
1204    o testreport seemed happy
1205    checkpoint57y_pre
1206    
1207    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1208    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1209    o add new offset feature to offline pkg (plus minor cleanup)
1210    o cfc fixes for final year of integration
1211    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1212      be in GCHEM_OPTIONS).
1213    
1214    checkpoint57x_post
1215    o fix testreport Pb in multiple test experiment.
1216    o cleanup our namelist syntax in verification:
1217      - make it more F95 standards compliant (some work still needed)
1218      - allows the vast majority of our tests to work with gfortran
1219    o Non-Hydrostatic:
1220     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1221     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1222    o Allow to apply AB on T,S rather than on AB(gT,gS):
1223     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1224     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1225       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1226     - need a "clever" read_pickup to restart from the other AB formulation
1227    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1228    o remove some unused variables (reduces number of compiler warnings)
1229    o adjoint
1230      * Disable useVariableViscosity for adjoint for time being
1231        (there are a number of extensive recomputations)
1232      * Initialize certain variables needed for adjoint
1233    
1234    checkpoint57w_post
1235    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1236                 fix the singleCpuIO RS version of MDSWRITEFIELD
1237       and add a WARNING if using globalFiles=T with multi-processors.
1238    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1239      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1240    o tracer advection scheme:
1241      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1242       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1243       was not very convenient).
1244      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1245       (further tests needed for the implicit DST & Flux-Limiter schemes).
1246    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1247      and sRef for convenience, handy, when you want to initialize
1248      ptracers in a large domain with a constant non-zero value. Also,
1249      untangle ptracers_init.F a little.
1250    
1251    checkpoint57v_post
1252    o change dome exp. to use variable viscosity in side-drag terms.
1253    o remove all the files from the cfc_offline test since they are now
1254      incorporated into tutorial_cfc_offline which has been producing
1255      identical results for a few days of testing
1256    o add new parameter: sideDragFactor to enable half-slip-side BC
1257      and change side-drag S/R to use viscosity from mom_calc_visc
1258      (can switch back by setting sideDragFactor=0.); affects results at
1259      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1260       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1261    o vorticity & strain are now computed without masking, to account for
1262      no-slip-side BC in variable viscosity calculation ; mask is applied
1263      anyway later on, before computing advection/coriolis terms.
1264    o modify exp4 to test new obcs support for reading from external files
1265      and for passive tracers
1266    o fix behavior of ptracers_monitor when monitor output is written to a
1267      netcdf-file; still not independent of monitor.F (writes in the same
1268      file).
1269    o change default value of tRef (put a uniform, meaningful value for ocean
1270      & atmos) and initialize sRef (was missing, as Martin mentioned).
1271    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1272      to be proportional to enstrophy dissipation length.  Thus,
1273       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1274      This is now consistent with Smagorinsky and with the manual.
1275    
1276    checkpoint57u_post
1277    o OBCS and PTRACERS: add open boundary support for passive tracers
1278      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1279        OB-values from file; this is not different from the way theta and salinity
1280        are treated
1281      - however, Orlanski-radiation conditions are not supported, and the model
1282        will stop if you use pTracers and Orlanski at the same time.
1283      - beefed up the rountine obcs_external_fields_load: now only those open
1284        boundary values are overwritten with values from files for which there
1285        are really files, otherwise the OB-fields remain untouched. This makes
1286        it possible to use different OBs at different ends of the domain (as
1287        with EXF)
1288    o reduce number of exch calls in shap_filt (s2).
1289    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1290      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1291    
1292    checkpoint57t_post
1293    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1294    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1295      same truncation, independent of the face number: affects affects several
1296      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1297    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1298      note that biharmonic viscosity + no-slip was not tested in any experiment.
1299    o fix bug in non-linear free-surf side-drag ; generate new output for
1300      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1301    o make mnc honor the writeBinaryPrec flag for most kinds of output
1302    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1303    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1304      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1305    o add brackets in multi-terms sum to get same truncation, independent of
1306      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1307      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1308    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1309      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1310      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1311      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1312      Suggested values of viscosity parameters found in mom_calc_visc.
1313      Many new viscosity diagnostics available.
1314    
1315    checkpoint57s_post
1316    o Add clearing-house for viscosity calculations, mom_calc_visc and
1317      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1318      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1319      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1320      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1321      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1322      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1323      ViscAhStrain and viscAhTension are now retired.
1324    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1325    o In response to JMC's bug report, genmake2 now ignores any soft-links
1326      that it finds in the *current* directory when searching for files.
1327      Soft-links found in any other source directories will still work as
1328      they did before.
1329    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1330      a C routine to unlimit the stack size
1331    o mnc-ify pkg/aim snapshot vars
1332    o mnc-ify pkg/land as requested by Daniel
1333    o various changes to mnc including:
1334      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1335      - output can now be grouped so that all files within a group
1336          change the ITER portion of their names in lock-step together
1337      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1338          and works with both EXCH1 and EXCH2 (but needs more testing)
1339      - writing works for all verification test cases w/ g77 on Linux
1340    
1341    checkpoint57r_post
1342    o make MNC variable initialization happen earlier
1343    o add diagnostics for (almost) each term of the momentum Eq.
1344    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1345    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1346    o remove MINIMAL_TAVE_OUTPUT option ;
1347      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1348    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1349      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1350    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1351    o add time-dependent SST, SSS control
1352    o cost terms in ecco/ modularized (new cost_generic.F)
1353    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1354    o new infrastructure for seaice model vs. obs misfits in seaice/
1355      * driver from the_main_loop.F is seaice_cost_driver.F
1356      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1357      * gradient check in Exp. 6a of natl_box_adjoint/
1358    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1359      (see README file)
1360    
1361    checkpoint57q_post
1362    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1363    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1364      - bug was reported by Jean-Michel and Ian Fenty
1365    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1366      update exp. cpl_aim+ocn output.
1367    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1368      Needed for high-res. runs with large global files
1369      to be able to limit tapelev size
1370    o Changed some tests for adjoint:
1371      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1372      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1373      * global_ocean.90x40x15/ back to default 3-level checkpointing
1374    o Modifications to enable scripted COMMON to MODULE conversion
1375      * verification/OpenAD/code/ has necessary scripts and description;
1376      * converts, compiles and runs successfully;
1377    
1378    checkpoint57p_post
1379    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1380    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1381      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1382    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1383    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1384      (was already the case for dissipation with mom_vecinv,
1385       and also the case for grad.PhiHyd when staggered-timeStep)
1386      This will allow to put dissipation out-off the AB time-stepping.
1387     Unfortunately, affects truncation error. Update output of exp. that "fails"
1388      (cg2d matching number) and leave the others for later: front_relax(10),
1389      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1390      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1391    
1392    checkpoint57o_post
1393    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1394      (2) its ready to be documented during the 20050801 DocFest
1395    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1396      for ideal_2D_oce and lab_sea on linux_ia32_g77
1397    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1398      in global1x1_tot/code_seaice_adj to access indices 32, 33
1399      (worth another tag)
1400    
1401    checkpoint57n_post
1402    o adding precip control xx_precip 32
1403    o adding swflux control xx_swflux 33
1404    o Replacing 10 forcing penalty cost routines by 1 generic.
1405    o Implementing partitioning in time-mean and variable adjustment
1406      for atmos. state.
1407    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1408    o in natl_box_adjoint:
1409      * updated exp 1 to 10
1410        (but does not have time-mean vs. variable split results yet)
1411    o updated global1x1/*_seaice_adj/
1412      to incorporate latest changes
1413    o enable useSingleCpuIO for mdsio vector routines
1414      (applies in particular to tapelev I/O)
1415    o removed inefficient K-loop in all active_file*control*.F
1416    
1417    checkpoint57m_post
1418    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1419      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1420    o pkg/exch2: filling of face-corner halo regions is optional
1421      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1422    
1423    checkpoint57l_post
1424     tag before updating tutorials (pre-release-2)
1425    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1426       for output and interpolation of input fields onto model grid)
1427    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1428       Affects results of exp. rotating_tank ; update output.txt.
1429    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1430          and taking the square quantity and/or using a fraction-weight field.
1431    o fix aim_diagnostics_init.F mate numbers.
1432    o add mnc output capability to diagnostics/diagstat and update
1433      our cvsignore files for the ACSII output generated
1434    
1435    checkpoint57k_post
1436    o lab_sea now uses diagnostics package and provides a suite of
1437      new EXF diagnostics output.
1438    
1439    checkpoint57j_post
1440    o exf
1441      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1442        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1443        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1444      * extended diagnostics output
1445        - now includes all EXF variables
1446        - hs, hl moved to common block
1447        - separate S/R for diagnostics, called after ctrl vector is added
1448        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1449        - EXFqnet contains true Qnet (i.e. includes qsw)
1450      * updated verif. lab_sea, global_with_exf
1451      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1452        to ensure that diagnostics sees a true EXFqnet
1453    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1454    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1455      several times with different frequencies.
1456    o mnc-ify the thsice package as requested by Daniel Enderton
1457      - the monitor--MNC output needs work
1458      - many attributes need to be added (most are currently blank)
1459    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1460      - many attributes need to be added (most are currently blank)
1461    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1462    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1463    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1464      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1465         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1466    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1467     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1468    
1469    checkpoint57i_post
1470    o Diagnostics package was changed: diagnostic allocation is now deactivated
1471      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1472    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1473      add 1rst Order upwind vertical Shear.
1474    o add a quick fix for A/B checkpointing in OFFLINE mode
1475    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1476      end-run around the C/Fortran linking horror in eesup/src/timers.F
1477    o added pkg/runclock: allows user to terminate run based on wall clock
1478    o added non-hydrostatic scaling parameter: nh_am2
1479    o pkg/my82: futile attempt to make results compiler-independent by adding
1480      some "_d 0", etc. no effect.
1481    o for mnc output, fill the 'T' coordinate var with myTime and create a
1482      separate 'iter' variable for iteration count
1483    o pkg/diagnostics:
1484      add new capability: output of Global/Regional & per-level statistics ;
1485      tested against monitor output (including land & thSIce) on various exp.
1486    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1487    
1488    checkpoint57h_done
1489      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1490      data.diagnostics, data.gchem, data.ptracers) is done.
1491    
1492    o pkg/diagnostics: prepare for Global/Regional statistics.
1493      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1494    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1495      and rename it: DIFFERENT_MULTIPLE
1496    
1497    checkpoint57h_post
1498    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1499    o pkg/diagnostics: change output frequency, now in seconds (instead
1500      of Nb of iterations). This requires to change data.diagnostics.
1501    checkpoint57h_pre
1502    
1503    o in mnc, let the user create the output dir if both mnc_outdir_date
1504      and mnc_outdir_num are false
1505    o add fflags() to pkg/diagnostics which allows one to specify, on a
1506      per-file basis, the file precision [default behavior is unchanged]
1507    o added diagnostics to pkg/kpp, including computation of mixed layer
1508      depth based on a temperature/density criterion
1509    o updated verification/natl_box to test the new pkg/kpp diagnostics
1510    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1511    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1512    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1513      not mnc -- this mistake was found by JMC and is now corrected
1514    
1515    checkpoint57g_post
1516    o add Adams-Bashforth 3rd Order time stepping:
1517      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1518      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1519    checkpoint57g_pre
1520    
1521    o make lambda[Theta,Salt]ClimRelax spatially varying
1522      (default remains spatially uniform constant based on tau)
1523    o added new control variables
1524      * init. uVel, vVel, etanN
1525      * lambda[Theta,Salt]ClimRelax
1526    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1527      (suggested by G. Forget)
1528    
1529    checkpoint57f_post
1530    o add parameter "baseTime" = model base time = time at iteration zero
1531      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1532      account for baseTime shift
1533    o move Coriolis arrays from PARAMS.h to GRID.h
1534    checkpoint57f_pre
1535    
1536    o mnc-ifying the seaice package
1537    o introduced an alternative length scale calculation for use in the limiting
1538      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1539    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1540    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1541      as well as grad(vort3).  Made it compatible with both approximate form
1542      for the cubed sphere and full form of these gradients.  Added flag
1543      useFullLeith to select between approximate and full form.  
1544    o add "d0" in getcon.F to reduce differences between compilers/platforms
1545      update output.txt of exp. fizhi-gridalt-hs
1546    o change port_rand funtion to allow to set the seed.
1547    o fix obscure MNC bug involving conversion between reals and integers
1548      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1549        new version is now more standards-compliant
1550    o adjoint-related modifications
1551      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1552      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1553      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1554    
1555    checkpoint57e_post
1556    o Adding eddy stress controls a la Ferreira et al.
1557    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1558    
1559    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1560      update output.txt of exp. fizhi-gridalt-hs
1561    o add more "Z" dimensions and associated coordinate vars to MNC
1562    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1563    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1564      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1565      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1566      months and years.  Requires pkg/cal.
1567    o diagnostics: add pickup functionality
1568      - off by default for backwards compatibility
1569      - current version only uses MDSIO -- MNC will be added
1570    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1571    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1572    
1573    checkpoint57d_post
1574    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1575    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1576      output from the diagnostics package
1577    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1578    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1579      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1580    o add coordinate variables to the MNC output from the diagnostics package
1581    o change MNC-flags default value: true when useMNC=TRUE
1582    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1583      the ability (off by default) to read the grid information using MNC
1584    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1585    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1586    o do snap-shot diagnostics at the middle of the time-interval (instead of
1587      at the end).
1588    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1589      new test for AIM with thSIce + slab-ocean
1590    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1591    o move state variable diagnostics to the beginning of the time step ;
1592      (note: still needs some work specially for snap-shot diagnostics)
1593      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1594    
1595    checkpoint57c_post
1596    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1597    o generate new output.txt files on faulks with g77 & the new -ieee option
1598    checkpoint57c_pre
1599    
1600    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1601      update output.txt of exp. global_ocean.90x40x15
1602    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1603      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1604    o add saltFlux(+File) forcing capability with periodicExternalForcing
1605    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1606    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1607    o improvements for the MNC output from DIAGNOSTICS:
1608      - correct handling of the unlimitied dimension
1609      - all dims now have associated coordinate variables
1610      - variables located at U, V, and Corner ("Z") points are now written
1611        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1612        *all* data points are output
1613    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1614    o added pkg/seaice/seaice_monitor.F
1615    o mdsio_readfield.F can now read files visible only to master MPI process.
1616    o pkg/seaice: some test code for ice-modified ocean stress
1617    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1618      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1619      spurious negative numbers for precipitation and humidity.  Will cause
1620      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1621    o pkg/ctrl/
1622      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1623        May be enabled via doPackDiag
1624      *  introduce z-scaling of
1625         + gradient (doZscalePack) and
1626         + control (doZscaleUnpack)
1627    o pkg/mdsio/
1628      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1629      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1630    
1631    checkpoint57b_post
1632    o simplify options in diagnostics_fill arguments (remove weird combinations)
1633    o fix MNC coordinate variables so that they now contain per-face index
1634      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1635      general, EXCH2 grids are only aligned to a "local" coordinate system
1636    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1637    o Implement instantaneous output within pkg diagnostics:
1638      setting a negative frequency in data.diagnostics produces
1639     "snap-shot" output (as opposed to time-average if freq > 0)
1640    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1641      NOTE: change ptracer diagnostics name: use 2 characters to work with
1642            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1643    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1644      becomes the coordinate variable for the 'T' dimension
1645    o add CF-style coordinate variables to MNC
1646      - just a first cut:  numbers are meaningless on the cubesphere and
1647        missing along the T axis but otherwise it works!
1648    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1649    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1650    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1651      this is based directly on what the model compute, so that the content of
1652      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1653    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1654    o clean up build options files for SunOS, in particular
1655      - remove -traditional from xmakedepend
1656      - change -xarch=v9 to -xarch=native for f77
1657      - restore use of make (not gmake)
1658      - add CC=gcc if using g77
1659    o changes per discussion of AM, JMC, & EH3 today:
1660      - move redundant "grid" variables out of "state" -- in preparation of
1661        creating proper CF-style coordinate variables and in recognition
1662        that any/all grid variables can be easily copied (eg. w/NCO) from
1663        the grid files into any of the other NetCDF files
1664      - *always* output grid variables with MDSIO (this will eventually be
1665        changed)
1666      - output MNC grid file if useMNC is true
1667    o every instance of _END_MASTER() has been found and replaced with
1668      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1669      preprocessors
1670    o re-arrange diagnostics pkg initialisation:
1671     - allow each package to extend the available diagnostics list
1672     - add some checking and fix small problems (multi-threaded, ...)
1673     - new S/R diagnostics_fill (replace fill_diagnostics):
1674       look through the short list of active diag. (instead of the long list)
1675       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1676    
1677    checkpoint57a_post
1678    o this set of changes restores TAMC compatibility
1679      tested for global_ocean.90x40x15 adjoint on trough
1680      (what a pain)
1681    
1682    checkpoint57a_pre
1683    o some modifs in tools/build_options for sunos
1684    o call ctrl_pack for ctrl at end for optimcycle=0
1685    
1686    checkpoint57
1687    o add horizontal bi-harmonic viscosity for vertical velocity
1688      - new parameter viscA4W (defaults to viscA4)
1689      - affects only non-hydrostatic code
1690      - to be done: no-slip lateral boundary conditions
1691    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1692    o implement Implicit Vertical advection for pTracers
1693    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1694      (implemented also for implicit vertical diffusion & advection)
1695    o OBCS: extend application of tracer open boundary conditions
1696      to a strip beyond the boundary of width Olx/Oly
1697    o add call monitor to TAF set of required calls (flow directives)
1698      and include in natl_box_adjoint
1699    o untangle a few ifdefs related to cost, ctrl, autodiff
1700      untangel a few ALLOW_ECCO_OPTIMIZATION
1701    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1702      (theta2, salt2 in ecco_cost_weights)
1703    
1704    checkpoint56c_post
1705    o OBCS as control variables
1706      - update ctrl_ad_diff.list, obcs_ad_diff.list
1707      - remove balance of obcs controls from default
1708      - fix index bug nobcs in ctrl_init
1709      - fix dummy fields filen in ctrl_pack
1710      - add dummy weights for obcs
1711    o lsopt: comment out fort.94 output
1712    o optim:
1713      - remove unnecessary header files
1714      - adjusted namelists
1715      - add xerbla.F to Makefile
1716    o exf:
1717      - multiple modifications of exf_check_range
1718      - unit change in exf_init_runoff from [m/year] to [m/s]
1719    o mdsio:
1720      - i/o-vector change debugLevel from debLevA to debLevB
1721    
1722    checkpoint56b_post
1723    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1724      is called from DO_THE_MODEL_IO
1725      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1726      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1727      - clean up PTRACERS_WRITE_TIMEAVE a little
1728    o add another verification experiment that tests both the cfc-pkg and
1729      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1730      reactive tendencies treated inline with regular timestepping
1731    o testreport previously did a lousy job of comparing small numbers, so
1732      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1733      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1734      testreport.
1735    o ptracers_monitor: bug fix for MPI
1736    
1737    checkpoint56a_post
1738    o GCHEM: finish reorganizating the package
1739      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1740        (introduces another 3D-array for each passive tracer, but only if
1741        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1742        gchemTendency is not needed because the timestep is done separately)
1743      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1744      - GCHEM is now---more or less cleanly---separate from PTRACERS
1745      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1746        so clear to me how that should be done in a general way.
1747    o CFC: improve formatting of output in CFC_ATMOS
1748    o PTRACERS:
1749      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1750        that ALL experiments with ptracers enable can be checked. This makes
1751        GCHEM_MONITOR obsolete.
1752      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1753        monitorFreq
1754      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1755    o add PTRACERS (PTR0[1-5]) to testreport output
1756    o exf_check_range:
1757      * default changed to .TRUE.
1758      * will check values for niter0 if debLevA, every timestep if debLevB
1759      * STOP in exf_check_range if 'out of range'
1760      * range chosen generous to allow for potential extema
1761      TBD: a version with stricter range
1762           permitted range would be runtime parameters
1763    o GMredi:
1764      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1765      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1766      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1767    o GCHEM:
1768      - move call to GCHEM_FORCING_SEP, so that it is now called before
1769        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1770      - introduced a useGCHEM runtime flag and applied it everywhere.
1771      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1772        this flag is now only visible within GCHEM-pkg routines.
1773      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1774        be replaced by a 3D array that is computed before thermodynamics; for
1775        this, the tracer ID iTracer had to be included into the parameter list
1776        of ptracers_forcing
1777      - set up forward_step to call gchem_forcing, that will replace
1778        gchem_forcing_int in ptracers_forcing
1779      - cleaning up
1780    o small cleaning of exch2: remove files that are also in eesupp/src
1781    
1782    checkpoint56
1783    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1784    o mnc: cleanup "full" files--fixes out-of-memory problem
1785    o ECCO-GODAE
1786      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1787      * fully merged and updated from SIO code
1788        windstress sign change affects
1789        - exf_inscal_[u/v]stress
1790        - sign of xx_tau[u/v] adjustments
1791        - signs in cost_scat
1792      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1793      * natl_box_adjoint updated and compressed
1794      * 2-level checkpoint switch added
1795        (tested in EXP. 1 of natl_box_adjoint)
1796      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1797    o SVD
1798      * first complete, non-hacked version for SVD calculations
1799      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1800        performed via direct access files admtlm_vector.it????
1801        (via ctrl_[un]pack)
1802      * optimcycle is used for ARPACK iteration counter
1803        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1804      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1805        and add linear transforms where necessary
1806      * controls are initial/final SST, SSS (can be extended; need to check
1807        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1808    o mdsio: filename info to both stderr, stdout
1809    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1810      from sign change
1811    
1812    checkpoint55j_post
1813    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1814      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1815    o add consistent build directories and .cvsignore files to verification
1816    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1817    o make all subroutines 30 or less characters in length for certain older
1818      compilers to work (a thorough search only turns up two routines in
1819      pkg/ptracers)
1820    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1821      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1822    
1823    checkpoint55i_post
1824    o change arrays for total vertical diffusivity (2.D if explicit,
1825      3.D if implicit) ; each ptracer uses its own background value.
1826    o added mnc/NetCDF output capability to ocn_compon_interf
1827      - added bits to verification/cpl_aim+ocn so that it can run on
1828        ITRDA and other clusters without the mpirun "-wd" option
1829    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1830      configuration
1831    o give MNC the ability to create additional files rather than
1832      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1833      - the default is just less than 2GB which is a practical limit
1834        on many systems
1835    o Compute the non-local term using either KPP vertical diffusivity (=default)
1836       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1837    
1838    checkpoint55h_post
1839    o add verification test "vermix"
1840    o remove all the *_ioinc flags and replace with the single global
1841      outputTypesInclusive flag
1842    o allow to set a vertical profile of vertical diffusivity for T & S
1843    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1844    o useMNC moved from data.mnc to data.pkg
1845    
1846    checkpoint55g_post
1847    o Renaming carbon AD experiments to comply with testreport conventions
1848    o Updating adjoint of Held-Suarez hs94.1x64x5
1849    o Fixing directives for non-ECCO forward_step, after ECCO directives
1850      have been fixed to avoid recomp. of do_oceanic_phys
1851      Works well for global_ocean.90x40x15,
1852      but recomp. issue remains for carbon
1853    o Updating adjoint output for natl_box_adjoint after
1854      pkg/ecco has been modified (see taga c55d_post)
1855    
1856    checkpoint55f_post
1857    o rename to timeave_init_fixed
1858    
1859    checkpoint55e_post
1860    o some delicate re-shuffle of store directives to avoid one
1861      extra call of do_oceanic_physics
1862      affects ecco_the_main_loop.F, do_oceanic_physics.F
1863      checkpoint_lev1_directives.h
1864    o NB: this may break global_ocean adjoint temporarily,
1865      but it is clear how to fix it. Will do later, need this now.
1866    
1867    checkpoint55d_post
1868    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1869    o ecco_cost_weights is modified to 1x1 runs
1870    o modifs to allow observations to be read in as
1871      single file or yearly files
1872    o enable to read exf forcing fields as either
1873      single file or yearly files (flag useExfYearlyFields)
1874    checkpoint55d_pre
1875    
1876    o switch between 2-level and 3-level checkpointing
1877    o add ability of MNC to write local and "partial" (eg. 2D slices where
1878      the full 3D field is never actually stored) arrays to NetCDF files
1879      with the correct (that is, the complete multi-dimensional) set of
1880      array indicies
1881      - used in mom_vecinv() to write the diagFreq output
1882      - tested (demonstrated) in verification/aim.5l_cs
1883    o further mnc-ification
1884      - add verification/lab_sea to the list with mnc setups
1885      - fix undefined mnc v-names in cd_code
1886      - add kpp to mnc output (both snapshot and timeave)
1887    o non-hydrostatic code
1888      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1889        in calc_gw.F
1890      - defaults to viscAh
1891      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1892        friction or Leith) in non-hydrostatic mode, as long as there is
1893        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1894    o pkg/cost
1895      extend simple cost functions to treat time mean quantities
1896      (T,U,V) via cost_accumulate_state from cost_tile
1897    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1898        be 2 times larger than the minimum size the advection scheme requires.
1899        now get a perfect conservation of salt in advect_cs test-exp (updated)
1900    o GGL90 (Gaspar's TKE mixed layer)
1901      - add horizontal diffusion of TKE, requires exchanges in
1902        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1903        default. In OPA there is no horizontal diffusion of TKE but the
1904        mixing coefficients are computed from a horizontal average of TKE of
1905        6 points or so. I think that diffusion has a little more physical
1906        justification.
1907      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1908        was in vain)
1909      - mask tke-variable in ggl90_init
1910    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1911    o fix biharmonic diffusion on CS-grid.
1912    o more obcs stuff
1913      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1914        for reading boundary values. This routine is called from
1915        obcs_prescribe_read
1916      - updated obcs_check
1917      - changed sponge layer relaxation parameter units for days to seconds
1918      - turned off sponge layer by default
1919      - changed argument list of OBCS_CALC to myTime+deltaTclock
1920      - fixed about 35 bugs in obcs_external_fields_load
1921    
1922    checkpoint55c_post
1923    o obcs stuff
1924      - new runtime flags useOBCSprescribe, useOBCSbalance
1925      - re-arranged obcs_calc
1926      - moved exf_getobcs to obcs_prescibe_read
1927        obcs_prescibe_read is called after ORLANSKI stuff
1928        and independent of it (executable can contain all).
1929      - updated obcs_check
1930      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1931        These may be necessary only if tangential velocities are
1932        prescribed at OB, not sure, needs testing.
1933    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1934      which simplifies the calls and passes the ifc check-bounds test
1935    
1936    checkpoint55b_post
1937    o add a 2D scalar, Z location, exchange_2 routine.
1938    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1939      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1940      affects advect_cs results (for the wrong reason): update output.txt
1941    o use a more standard discretization for biharmonic viscosity ;
1942     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1943      affects results of dome set-up: update output.txt
1944    o fix gad_advection.F (CubedSphere part), back to version 1.23
1945    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1946    
1947    checkpoint55a_post
1948    o merged code to
1949      * prescribe/read time-dependent open boundaries
1950        (works in conjunction with exf, cal)
1951      * sponge layer code for open boundaries
1952      * each boundary N/S/E/W now has its own CPP option
1953        (healthy for the adjoint)
1954    
1955    checkpoint55
1956    o up-to-date adjoint of previous breaks
1957      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1958      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1959      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1960      - carbon: * remove tr1-related adjoint verification
1961                * add ptracer as control variable
1962    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1963      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1964    
1965    checkpoint54f_post
1966    o in verification/carbin/ remove experiment related to
1967      ALLOW_PASSIVE_TRACER (array tr1 etc)
1968      code_ad/ input_ad/ results_ad
1969    
1970    o add two new packages
1971      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1972        + subject to optimization (memory)
1973      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1974        + subject to reordering (many GOTOs in the original code)
1975        + so far opps is called for every (i,j) point, and then operates in
1976          the vertical; one may want to reorder the scheme in order operate in
1977          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1978          fields)
1979    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1980      - all verification tests compile and run with linux_ia32_g77
1981      - defaults are compatible with current input files--nothing
1982        should change if you were not previously using MNC
1983      - MNC output has been added in numerous places (eg. timeave)
1984        but there are still a few writes not yet do-able with MNC
1985        (this is in progress)
1986      - flags now allow for either/or/both use of MDSIO and MNC and
1987        documentation will soon follow
1988      - numerous small formatting cleanups for ProTeX
1989    o add version info (via BUILD_INFO.h) to MNC and stdout
1990    
1991    checkpoint54e_post
1992    o add two new packages
1993      - pp81 (Packanowski and Philander, 1981), Richardson number and
1994        stratification dependent mixing
1995      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1996      - these scheme operate in a similar manner as KPP (without ghat, of
1997        course), however there is only one diffusivity that is used for both
1998        temperature and salinity (and passive tracers)ç
1999    o add offline package
2000    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2001      provided by Stephanie Dutkiewicz
2002    o genmake2: add ability to search for C compilers and cleanup test output
2003      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2004    
2005    checkpoint54d_post
2006    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2007    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2008      leading to additional shift by 5 days each year of integration
2009       (i.e. leading to considerable offset over the years)
2010    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2011    o start with no AB and no initial filtering (staggerTimeStep):
2012      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2013    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2014      (external loading & cpl import/export stay in forward_step.F)
2015    o update coupling interface to work with new staggerTimeStep
2016    o change MDSIO ptracers_pickup.
2017    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2018    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2019    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2020    
2021    checkpoint54c_post
2022    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2023      this affects (truncation error) output.txt of test-exp:
2024       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2025    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2026    o change Qnet to always be the net heat flux, (+upward).
2027      affects (truncation error) output of natl_box exp.: updated
2028    o define the max number of passive tracers in PTRACERS_SIZE.h
2029    o start to test mnc routinely in exp0
2030    o add sea-ice loading (sIceLoad) as a new forcing field.
2031    
2032    checkpoint54b_post
2033    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2034       impressive on Altix and Opteron systems)
2035    o diagnostics can now write NetCDF files through the mnc package
2036    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2037    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2038    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2039      affects (truncation error) output of lab_sea & natl_box exp.: updated
2040    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2041    
2042    checkpoint54a_post
2043    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2044    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2045    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2046    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2047      + internal_wave (shift in writing cg2d_ini_res)
2048    checkpoint54a_pre
2049    
2050    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2051      - modified verification/lab_sea and natl_box_adjoint accordingly
2052    
2053    checkpoint54
2054    checkpoint53g_post
2055    o prepare splitting of thermodynamics: store convect.counter in common block
2056    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2057      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2058    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2059    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2060    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2061    o restore adjointability
2062    
2063    checkpoint53f_post
2064    o modifications that affect AIM experiment results (update output.txt):
2065      - no advection of S at top interface Nr (pkg/generic_advdiff)
2066      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2067    o AIM pkg:
2068      - include stability function into surf.Flux derivative relative to Tsurf
2069      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2070    
2071    checkpoint53e_post
2072    o merged cylindrical coord configuration
2073    o added rotating_tank experiment
2074    checkpoint53e_pre
2075    
2076    checkpoint53d_post
2077    o faulks upgraded: re-generate output.txt that have changed:
2078       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2079    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2080    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2081    o added Sadourny discretization of Coriolis
2082      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2083      - re-enabled use of omega3 (useAbsVorticity)
2084    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2085      vector-invariant equations
2086      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2087    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2088      hopefully without new bugs
2089      - still to do: biharmonic friction for non-hydrostatic w
2090    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2091    o regenerated output for global_ocean_ebm (using -ieee)
2092    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2093      of mom_common/
2094      - simple re-arrangement of instructions within computing loop
2095    checkpoint53d_pre
2096    
2097    checkpoint53c_post
2098    o new version of coupler for AIM+thSIce and Ocean models
2099     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2100     - land: change Evaporation of snow
2101     - aim with thSIce: fix bug in snow-precip.
2102    o changes to calc_gw.F
2103     - bug fix for w^2 term near the bottom boundary
2104     - (hopefully) improve the lateral slip boundary condtions for use with
2105        partial/looped cells
2106      - because the bug fix changes two verification experiments anyway (exp5
2107        and plume on slope), change the lateral boundary condition from half slip
2108        to the value of no_slip_sides
2109    o ebm package wasnt quite up to the parallel task. Fixed that.
2110    o Adjoint of EBM package + verification
2111      * TLM OK
2112      * ADM not sufficient accuracy yet (needs further testing)
2113    
2114    checkpoint53b_post
2115    o Commiting new energy balance model to repository
2116      * package is pkg/ebm
2117      * verif. is verification/global_ocean_ebm
2118      * references are in ebm_driver.F
2119    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2120    C        Global thermohaline circulation. Part I:
2121    C        Sensitivity to atmospheric moisture transport.
2122    C        J. Climate 12(1), 71-82
2123    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2124    C        Global thermohaline circulation. Part II:
2125    C        Sensitivity with interactive transport.
2126    C        J. Climate 12(1), 83-91
2127    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2128    C        Destabilization of the thermohaline circulation
2129    C        by atmospheric eddy transports.
2130    C        J. Climate 7(12), 1870-1882
2131    o Will need long integration testing.
2132    checkpoint53b_pre
2133    
2134    o created pkg/mom_common in preparation for variable viscosity code
2135    o renamed and split ini_mnc_io
2136    o pkg/land: only liquid water can diffuse or run-off
2137    o AIM using land: soil wetness availability account for snow
2138    o added printMapIncludesZeros to EEPARMS namelist
2139    
2140    checkpoint53a_post
2141    o restore TAMC compatiility for exf_constants.h
2142      (no usage of _d in .h)
2143    o Additional storing in KPP in an attempt to fix
2144      TAMC problem with adjoint of KPP code.
2145      (no success...)
2146      Identical code works fine with TAF.
2147    o Fixed verification/natl_box_adjoint experiments.
2148      Initial conditions for Experiments 4 and 5 are now
2149      set to "SEAICE_initialHEFF=0", which is more reasonable,
2150      and hence gives results closer to that of Experiment 2.
2151      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2152    
2153    checkpoint53
2154    o stable checkpoint with up to date adjoint
2155      TLM tests only run for 1st grdchk at the moment. Its unclear if
2156      this is a code problem or a problem with resetting code for g_
2157      variables that is being autogenerated wrong.
2158      Otherwise:
2159       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2160       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2161         are both still in chaos following their security messes.
2162    
2163    checkpoint52n_post
2164    o various build (mostly genmake2) changes including:
2165      - ability to build/run more easily within Cygwin and MacOS X
2166      - more complicated Makefiles with a stronger dependence on Gnu Make
2167    o pkg/seaice modifications
2168      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2169        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2170        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2171      - changed proxy for geostrophic velocity and updated
2172        verification/lab_sea/results/* accordingly
2173      - removed ADI dynamic solver from pkg/seaice
2174      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2175        they caused a segmentation fault under certain circumstances
2176      - removed unused field WATR
2177    o bug fix in exf-package:
2178      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2179         now reflect that.
2180    o small fixes in the cal-package:
2181      - set reference date to first of January for the 'model'-calendar
2182      - failing of cal_CheckDate in cal_FullDate now actually results in a
2183        warning
2184    o small modifications in exf-package to increase flexibility:
2185      - change climtempfreeze from a constant to a runtime parameter that
2186        is specified in data.exf_clim (default = -1.9)
2187      - introduce runtime parameter windstressmax (default = 2.0) that is
2188        specified in data.exf
2189    o fix in pkg/thsice:
2190      - update Evap (Tsf changes) to be consistent with Latent heat flux
2191      - maintain snow precipitation unchanged (even if Tsf >=0).
2192     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2193    
2194    checkpoint52m_post
2195    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2196      this does not change any of the results, because myIter=0 in swfrac always
2197      lead to jwtype=2 (the default anyway), but the call makes little sense
2198      as a default
2199    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2200    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2201      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2202    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2203    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2204    o extending useSingleCpuIO option to work with new exch2 I/O format
2205      - old-style, missing-tile I/O is still accessible by defining CPP
2206        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2207    o monitor package can write to NetCDF files and/or STDOUT
2208    o fix re-definition bug in MNC_GRID_INIT_ALL()
2209    o doc/api_reference added
2210      - a framework for building an API Reference Manual using all
2211        the "protex" comments embedded in the code
2212      - see pkg/generic_advdiff, pkg/mnc for examples
2213    o MNC:
2214      - make myThid the last argument for all subroutines
2215      - new default for the grid files: NO halos
2216      - add useMNC and other run-time flags
2217      - separate per-file-group handling of the unlimited dimension
2218      - early initialization of MNC w/ flags read at the eeboot stage
2219        and lookup tables set in initialize_fixed
2220      - write all MNC output to a freshly-created directory
2221    o thermodynamics sea-ice (thsice) is now tested with testreport.
2222    o test exp. advect_cs: use the standard cs32 grid ; update output.
2223    o Added functionality to grdchk:
2224      pick global i,j,k position (or nearest wet) where to perform check.
2225    
2226    checkpoint52l_post
2227    o new land formulation:
2228      a) use ground enthalpy as prognostic variable to ensure exact
2229         energy conservation.
2230      b) account for water temperature and for latent heat of freezing
2231         in all processes (rain, run-off, ground storage)
2232      c) compute surface and ground temperature implicitly.
2233    o aim_v23 modification for new land model:
2234      a) Treat separately land / ocean / sea-ice surface fluxes
2235         to allow implicit computation of land & sea-ice surface temp.
2236      b) add snow precipitation.
2237    checkpoint52l_pre
2238    
2239    o fix problem (when 1 tile is empty) in min/max monitor.
2240    o fix bug in timeAve (u,vZetatave in common block)
2241    o no restoring terms under ice for pkg/seaice
2242    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2243    o bug fix for pkg/seaice pickups
2244    o change MNC call locations and add coordinate attributes
2245    o mask vorticity at the corner ; affects global_ocean.cs output
2246    o fix ini_curvilinear_grid ; test CS experiments with mpi
2247    o aim.5l_cs: modify sea-ice fraction input file ; update output
2248    o exf: Adding simple range check routine for exf fields after read
2249    
2250    checkpoint52k_post
2251    o removed top-level directory "diags"
2252      - we migrated these functions to pkg/timeave a long time ago
2253    o fixed bug introduced in pkg/monitor
2254    o accuracy ctrlprec = 32 insuffient for gradient checks using
2255      averaged fields (I/O via cost_averages)
2256      -> use ctrl.h in active_file*.F to control I/O precision.
2257    o paramter list of CALL ADTHE_MAIN_LOOP
2258    o added initial do_the_model_io to ecco
2259    o set all ...Freq to zero after cost_final
2260      taveFreq, dumpFreq, pChkptFreq
2261    o MAIN and ECCO differentiability restored
2262    
2263    checkpoint52j_post
2264    o fix nchklev in tamc.h for global_ocean...
2265    o Bringing flow and store directives up-to-date
2266    o Really weird thing!
2267      call do_the_model_io from the_main_loop with parameters
2268      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2269      TAF places a faulty re-call of initialise_varia
2270      after cost_final call which should not be there!
2271    checkpoint52j_pre
2272    
2273    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2274      error messages
2275    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2276    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2277      debug output
2278    o modfied mdsio_writefield.F to handle non-global files under exch2
2279    o update AIM Cubed-Sphere exp (aim.5l_cs):
2280      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2281    o update AIM Equatorial Channel exp:
2282      use standard aim_v23 pkg and change the SST fields to be more realistic.
2283    o globalFile now works with exch2
2284    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2285      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2286    o limit timeave output for hi-res integrations
2287    
2288    checkpoint52i_post
2289    o removed CPP_EEOPTIONS.h from verification/*/code
2290    o updated the tiling for global_ocean_pressure
2291    checkpoint52i_pre
2292    
2293    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2294      the old pkg/aim).
2295    
2296    checkpoint52h_pre
2297    o shortened offending lines in exch2_send_rx?.template
2298    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2299    o genmake2: add build & execute test for NetCDF code
2300    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2301      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2302    o added useSingleCPUIO flag to monitor.F and mon_out.F
2303    o added temporary hack for sea-ice dynamics on the cube:
2304      metric terms are ignored and it is assumed that
2305      there is no sea-ice on cube faces 1, 2, 4, and 5.
2306    
2307    checkpoint52f_post
2308    o added exch2 cube routines to pkg/exch2
2309    o modified hs94.cs-32x32x5 to use it
2310    o added new grid files to hs94.cs-32x32x5
2311    checkpoint52f_pre
2312    
2313    checkpoint52e_post
2314    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2315      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2316    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2317      to work with implicit vertical advection and AB ;
2318    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2319    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2320     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2321    checkpoint52e_pre
2322    
2323    o fix bug in impldiff when Nr=1 or Nr=2.
2324    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2325    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2326    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2327      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2328    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2329    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2330    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2331    
2332    checkpoint52d_post
2333    o re-tiled many expts to allow comparison in multi-processor mode
2334      - updated output accordingly
2335      - changed hs94.128x64x5 to use intial T from file rather than use the
2336        random number generator
2337    o add infrastructure in model routines for fizhi and gridalt packages
2338    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2339    o changes to permit hi-res, cubed-sphere, configuration
2340      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2341      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2342      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2343        of surface winds for the cube
2344      (A verification experiment, based on global_ocean.cs32x15, but with
2345       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2346       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2347       complete with example surface forcing files and matlab scripts to look
2348       at the output and compare it with that of global_ocean.cs32x15.)
2349    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2350       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2351       to conform to the common rule.
2352    o check-in the first version of the coupler + interfaces for multi-components
2353       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2354       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2355       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2356       - ocean and atmos. share the same horizontal grid (no interpolation).
2357       - exchanges between component and coupler is done in forward_step
2358    o new verification experiment, cpl_aim+ocn:
2359       coupled ocean - AIM atmosphere on cs32 grid.
2360    
2361    checkpoint52d_pre
2362    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2363    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2364    
2365    checkpoint52c_post
2366    o Fixing OPTIONS files for use of exf:
2367      - ALLOW_ECCO not needed
2368      - ECCO_CPPOPTIONS.h should not be included from
2369        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2370        as has been the case in the past
2371      - All cal/exf related options are currently set in
2372        single header file. Should remain so until we
2373        agree on a consistent new policy.
2374    o Removed all CPP options for cal package.
2375      cal has no more CPP options.
2376    o modified STOREs in GAD_ADVECTION
2377    o corrected key comp. for passkey
2378    
2379    checkpoint52b_post
2380    o new version: "thsice" of thermodynamic sea-ice pkg:
2381     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2382     - modify fluxes but do not change theta directly;
2383     - light cleaning of bulk_force pkg (still needed with thsice).
2384     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2385       + output_thsice.txt to test thsice & bulk_force pkgs.
2386    o put back grid & coriolis monitor output.
2387    checkpoint52b_pre
2388    
2389    o call "do_the_model_io" at the beginning (=> dump initial state)
2390    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2391    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2392      (need info on NUMBER_OF_PTRACERS)
2393    o missing PTRACERS headers in some routines
2394    o default tamc.h in pkg/autodiff supposed to crash
2395      to ensure proper customization
2396    
2397    checkpoint52a_post
2398    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2399      - moved surfaceTendencyTice from pkg/seaice to main code
2400      - subroutine FREEZE_SURFACE now limits only surface temperature
2401        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2402        => new output.txt for global_ocean.cs32x15 & global_with_exf
2403      - keep the old version of FREEZE for backward compatibility;
2404        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2405      - corresponding modifs for TAF directives
2406    o added surface flux output variables to TIMEAVE_STATVARS
2407    o time-averaged output for pkg/ptracers
2408    o fix problem with ECCO-related divided adjoint
2409      snapshot file was missing some ad-variables,
2410      but no warning issued by TAF
2411    
2412    checkpoint52a_pre
2413    o some bug fixes for #undef REAL4_IS_SLOW
2414    
2415    checkpoint52 = ecco_c52_e35
2416    o after testing adjoints of checkpoint51u_post
2417    
2418    checkpoint51u_post
2419    o this is the post-merge tag of the ecco-branch
2420      (needs another clean checkout and re-testing)
2421    o various natl_box_adjoint configs and results
2422      but no input fields
2423    o obcs adjoint not yet merged!
2424    o adding ECCO global 1x1 and 2x2 degree configs
2425    o updated/extended some store directives for seaice
2426    o pkg/ecco now containes ecco-specific part of cost function
2427    o top level routines the_main_loop, forward_step
2428      supersede those in model/src/
2429      previous input data.cost now in data.ecco
2430      (new namelist ecco_cost_nml)
2431    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2432    
2433    checkpoint51t_post
2434    o this is the pre-merge tag of the ecco-branch
2435    
2436    checkpoint51s_post
2437    o cleanup: removed various obsolete #define-s
2438    o pkg/grdchk
2439      - renamed 'ph-grd 3' to 'grad-res'
2440      - merged from ecco-branch
2441        (remaining bug fixes for obcs gradient checks)
2442      - additional high-precision output for testreport
2443        (grep for 'precision_grdchk_result')
2444    
2445    checkpoint51r_post
2446    o cleaned up or removed CPP_OPTIONS.h files
2447    o updated results for some of the tests to reflect the new
2448      optfiles (-ieee: -O0 instead of -O3)
2449    
2450    checkpoint51q_post
2451    o cd_code:
2452      - moved cd_scheme.F -> cd_code_scheme.F
2453      - separate read_checkpoint from cd_code_ini_vars.F
2454      - separated cd_code part from write_checkpoint
2455      - updated AD_SOURCE, generated .flow
2456      - added CD_CODE_VARS.h to the_main_loop
2457      - Moving cd_code specific store dir.s to pkg/cd_code
2458    o ctrl package totally restructured
2459      - pack/unpack now optional and decoupled from
2460        xx_/adxx_ I/O
2461      - ctrl_pack/unpack cleaned
2462        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2463      - confined inclusion of AD_CONFIG.h to where necessary.
2464    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2465    
2466    checkpoint51p_post
2467    o create initial cd_code package
2468      - WARNING: the initialization of fields within packages
2469        is broken because INI_FIELDS (where READ_CHECKPOINT is
2470        called) is called *before* PACKAGES_INIT_VARIABLES.
2471        This seems to be backwards since
2472        1) its important to initially zero the entire field including
2473           the "halo" region
2474        2) zeroing needs to be done *before* reading pickup info
2475           and the pickup call might or might not happen in any
2476           particular run
2477      - this needs an overhaul for R2
2478    o cleanup verification/*/code/GMREDI_OPTIONS.h
2479    o cleanup testreport
2480    
2481    checkpoint51o_post
2482    o bringing AD-related verif's up to date with genmake2
2483      - carbon/
2484      - global_ocean.90x40x15/
2485      - hs.94.1x64x5/
2486      - (front_relax/ )
2487    o (more) consistent directory structure for AD-related verif.'s
2488    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2489    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2490    o bug fix in find_alpha.F for MDJWF:
2491      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2492        change rho -> rho-rhoConst
2493      - replace call find_rho to find_rhonum
2494    o initialisation of rFlx extended to full array (required by TAF)
2495      and shifted to thermodynamics
2496    o removed PTRACERS.h in ptracers routine
2497    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2498    o Correcting initialisations for fVerU, fVerV.
2499    o helping TAF to recognize dependency on kUp for
2500      fVerU, fVerV
2501    o Replacing delZ by delR in pkg/ctrl/
2502    checkpoint51o_pre
2503    
2504    o undid all of cp51 pending some cleanups and discussion
2505    o added the [#include "AD_CONFIG.h"] statement to all files that need
2506       it for adjoint/tl #defines
2507     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2508     o removed tools/genmake since it no longer works
2509    
2510    checkpoint51n_post
2511    o modifications to make FREEZE flux visible to pkg/kpp
2512      - moved surfaceTendencyTice from pkg/seaice to main code
2513      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2514      - subroutine FREEZE now limits only surface temperature
2515        (this means new output.txt for global_ocean.90x40x15,
2516         global_ocean.cs32x15, and global_with_exf)
2517    o added surface flux output variables to TIMEAVE_STATVARS
2518    
2519    checkpoint51n_pre
2520    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2521    o added [#include "AD_CONFIG.h"] to all files that use the following
2522      defines:
2523      - ALLOW_ADJOINT_RUN
2524      - ALLOW_TANGENTLINEAR_RUN
2525      - ALLOW_ECCO_OPTIMIZATION
2526    
2527    checkpoint51m_post
2528    o incorporating changes to get TAMC/TAF working in genmake2
2529      - added new TAMC/TAF targets to the Makefile
2530      - various cleanups related to package handling
2531      - these changes should have no impact on the forward model
2532    
2533    checkpoint51l_post
2534    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2535     - faster algorithm for cal_addtime.F
2536     - higher precision arithmetic, where needed
2537     - pkg/exf *startdate variables changed from calendar date to
2538       model integration time
2539    
2540    checkpoint51l_pre
2541    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2542    o enable to apply restoring on S & T only in a latitude band.
2543    o update output (external_forcing_surf modif. change truncation errors)
2544       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2545    
2546    checkpoint51k_post
2547    o change default to: useNHMTerms=.FALSE.
2548     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2549       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2550     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2551        exp1, ideal_2D_oce
2552     - change data file of oceanic exp (leave the results unchanged for now)
2553       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2554    o set gravitySign automatically according to the vertical coordinate used
2555      (and change sign: back to "logical" value: +1 when R increases downward)
2556    o added an include barrier to the default CPP_OPTIONS.h and
2557      removed the #include "PACKAGES_CONFIG.h" from it
2558    o fix a bug in mom_fluxform (from chk51j_post)
2559    
2560    checkpoint51j_post
2561    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2562    o adjusted some flow directives (dynamics, thermodynamics)
2563    o added cubed-sphere case to test cost function
2564    o heckpoint_lev?_directives.h now include
2565      pkg-specific directives, whenever those are enabled.
2566    o Moving pkg-specific flow directives to corresponding pkg
2567      Moving pkg-specific differentiation list to corresponding pkg
2568      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2569      ---> conventions are
2570           - pkg_ad.flow
2571           - pkg_ad_diff.list
2572           - pkg_ad_check_lev?_dir.h
2573    
2574    checkpoint51i_post
2575    o merge of the branch-genmake2
2576      - knowingly breaks the older genmake
2577      - automatic generation of all ALLOW_${PKG_NAME} defines
2578      - new testreport supersedes older testscript
2579    o large number of package inclusion and header cleanups
2580    checkpoint51i_pre
2581    
2582    o new output for adjoin of global ocean vector invariant
2583    o fix for checkpoint of thermodynamic seaice and bulk_force
2584    o Steph gchem various cleanups
2585    
2586    checkpoint 51h_pre
2587    o fixed some single quotes
2588    o modify gchem pkg to be more versatile
2589    o modifications to clean up dic pkg
2590    o add pkg/cfc
2591    
2592    checkpoint51g_post
2593    o provide links for ARPACK and ADM*TLM
2594    o start removing verification/vero/
2595    o update AD-related stuff
2596      (in particular some IF-statements in model/src/ routines)
2597    o adding to verification/global_ocean.90x40x15/ adjoint of
2598      vector invariant setup
2599    
2600    checkpoint51f_post
2601    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2602    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2603      of tracer Green's fucntions for ocean inversion project.
2604    
2605    checkpoint51f_pre
2606    o Added on-the-fly spatial interpolation capability
2607        "USE_EXF_INTERPOLATION" to pkg/exf.
2608      - This is a temporary Cartesian-grid hack until
2609        the super-duper ESMF coupler becomes available.
2610      - See verification/global_with_exf/README for usage example.
2611      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2612        flags and modified pkg/seaice accordingly.
2613    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2614        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2615        non-local transport term.
2616    
2617    checkpoint51e_post
2618    o pkg/mom_vecinv:
2619      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2620      - add time-ave diagnostic of vorticity advection.
2621    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2622    o atmospheric geopotential: - include water vapor effect;
2623                                - use p^kappa in p* scaling.
2624    o land pkg: read initial state from files.
2625    o AIM : add stratospheric drag in the upper level
2626    
2627    checkpoint51d_post
2628    o change function ILNBLNK (=> last non-blank char.) to return zero
2629      (instead of the string length) when the string. char is empty
2630    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2631    o modif's to restore TAMC compatibility
2632      - avoid "_d" constructs in PARAMETER declarations
2633      - avoid interrupting lines by comment lines
2634    o Use cluster local disks for purely local I/O
2635      vs. globally visible disks needed for ctrl stuff
2636      (merged from ecco-branch)
2637      - new active_file_loc... and mdsio_..._loc routines
2638      - affected packages: autodiff, ctrl, grdchk, mdsio
2639    
2640    checkpoint51c_post
2641    o introducing integer flag debugLevel
2642      - debLevZero: suppress all output
2643      - debLevA: standard
2644      - debLevB: equivalent to current debugMode=.TRUE.
2645    o introducing pathname variable mdsioLocalDir for mdsio
2646      that can be specified at runtime
2647      (relevant for cluster I/O to local disk)
2648    `
2649    >>>checkpoint51b_post
2650    adjoint of ptracers
2651    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2652    o extended state in checkpoint_lev?, etc.
2653    o alternative ctrl/cost with tr1 or ptracer
2654    o new comlev1_bibj_ptracers
2655    o new ptracers.flow
2656    o made ptracers_forcing same as external_forcing_s
2657    o added verification for adjoint with ptracers
2658      - adm. grdchk fail so far
2659      - tlm. grdchk OK
2660      - checked tapelev/comlev recomputations: OK
2661    <<<checkpoint51b_pre
2662    
2663    checkpoint51a_post
2664    o added code for biogeochemistry package
2665      - new pkgs: dic, gchem
2666      - new subroutine in ptracers
2667    o modify code for biogeo packages
2668      - in model/src and pkg/ptracers
2669    
2670    checkpoint51
2671    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2672      - autodiff, ctrl, exf, grdchk, seaice
2673      kept separate packages
2674      - cost, ecco, obcs
2675    o updating verification/internal_wave, verification/lab_sea
2676      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2677    
2678    checkpoint50i_post
2679    o Preparing next differentiable checkpoint and sync
2680      of MAIN vs. ecco-branch
2681      - 1st step: this one is differentiable
2682      - 2nd step: next(! not this) checkpoint will have updated packages
2683                  from ecco-branch)
2684    
2685    checkpoint50h_post
2686    o new package "land": provide surface BC for AIM.
2687    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2688    o AIM: use true log-P extrapolation for near surface temp (= as in
2689        F.Molteni paper) ; update aim.5l_cs output.
2690    o New variable in PARM03 for more flexible pickups
2691    o somewhat cleaned package initialisation sequence for
2692      ctrl/ cost/ ecco/ in packages_... routines
2693    
2694    checkpoint50g_post
2695    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2696      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2697      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2698        made the default because of faster convergence than ADI
2699    
2700    checkpoint50f_post
2701    o exf totally restructured
2702      - replaced all exf_set_ routines by one generic exf_set_gen.F
2703        and made sure it's still differentiable
2704      - split exf_getffields.F into new exf_bulkformulae.F
2705      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2706      - updated adjoint/makefile and relevant verif. accordingly
2707    
2708    checkpoint50f_pre
2709     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2710          + change Evap over land. (update aim.5l_cs output)
2711     o added missing .cvsignores and made uniform across expts
2712     o changed configuration of tidal_basin_2d expt
2713     o added pkg/debug functions for tracing code in fatal crashes
2714     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2715     o new fn in pkg/monitor to stop model if solution grows too big
2716     o removed lots of single quotes from comments
2717    
2718    checkpoint50e_post
2719    o make KPP work with PTRACERS
2720     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2721       nearly a copy of kpp_transport_s
2722     - there is no analogue to SurfaceTendencyS, so I have to use
2723       gPtr(of the surface layer) instead
2724    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2725    checkpoint50e_pre
2726    
2727    checkpoint50d_post
2728    o change kpp output from multiple-record state files to single-record state
2729      files analogous to write_state.F
2730    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2731      analogous to the cg2d-related output.
2732    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2733      so that writing to internal file fn (with length 512) fails.
2734    checkpoint50d_pre
2735    
2736    checkpoint50c_post
2737    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2738    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2739    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2740    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2741    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2742    
2743    checkpoint50c_pre
2744    Merging from release1_p13:
2745    o bug fix for pkg/seaice dynamic solver
2746    o Added SEAICE_initialHEFF to pkg/seaice
2747    
2748    checkpoint50b_post
2749    o store u*,v* in gU,V instead of in guNm1,gvNm1
2750    o in order to put the momForcing out of the Adams-Bashforth:
2751      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2752      to timestep.F
2753    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2754    o re-generate output for highly sensitive test-exp:
2755       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2756    
2757    checkpoint50b_pre
2758    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2759    o corrected CPP option mismatch in exf_Bulk... functions for case
2760      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2761    
2762    checkpoint50a_post
2763    o Bug fix for merging between c50 and KPP.
2764      ikey was passed from thermodynamics to kpp_calc via
2765      common block rather than being recomputed in kpp_calc,
2766      in contradiction with new key itdkey.
2767      New key ikppkey created, and tamc.h headers updated.
2768    
2769    checkpoint50
2770    - 2nd step of merge with ecco-branch:
2771      merge changes in ecco-branch back into main trunk
2772    - bug fix in find_alpha
2773    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2774    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2775    - merged some sliced AD support routines
2776    
2777    checkpoint49
2778    merged from ecco-branch:
2779    o exf:
2780      - Enable initialisation of forcing fields to constant
2781        (runtime) values.
2782      - in exf_getffields.F
2783        Reduce i-/j-loop to interior domain, discarding overlaps.
2784        That also fixes wrong TAF-key computations for key_1, key_2
2785        with bulf formulae.
2786      - exf_init.F modify #ifdef for exf_init_evap
2787      - exf_getffieldrec.F, ctrl_getrec.F
2788        The following INT-usages are not safe:
2789          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2790          fldcount = int(fldsecs/fldperiod) + 1
2791        and were modified.
2792    o autodiff: checkpoint_lev...
2793      - updated storing for bulk formulae (some arrays were missing)
2794      - added state for seaice package
2795      - synchronized with main branch
2796    o DIVA:
2797      Modif.s in
2798      - the_main_loop.F
2799      - the_model_main.F
2800      and added cost_final_restore.F cost_final_store.F
2801      o With these changes, it is possible to fully separate
2802        the first forward run to compute the cost function (mdthe_main_loop)
2803        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2804        into separate model executions.
2805        This enables better tuning of DIVA to given queue sizes.
2806      o Loss of cost function value in consecutive DIVA runs is
2807        fixed by storing to 'costfinal' file.
2808      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2809        beginning/end of adjoint integration is accounted for.
2810      The current changes apply to TAF-1.4.26.
2811      TAF has one remaining bug, requiring one manual change
2812      (see MITgcm manual).
2813    o cal: synchronized between MAIN and ecco-branch
2814    
2815    checkpoint48i_post
2816    o Changes to restore differentiability of code w.r.t. previous tag
2817      (mostly adding new routines to make list and replacing
2818      pressure by totPhiHyd).
2819    o Updated and merged grdchk package
2820      - has both ADM and TLM checks
2821      - works for single- and multi-proc.
2822      - output cleaned
2823      - worked successfully for parallel DIVA
2824    o genmake:
2825      - Adding -platform=SP4
2826      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2827    o Modif. for DIVA:
2828      ctrl_unpack should not be called in intermediate DIVA interval.
2829      (similar thing would apply for active files such as
2830      tbar, sbar, psbar, which should not be reinitialised;
2831      only relevant for ecco-branch)
2832    
2833    checkpoint48h_post
2834  o improve "ini_p_ground" when using finite difference form for calc_phi_hyd  o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2835  o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F  o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2836  o Added SEAICE_initialHEFF to pkg/seaice  o Added SEAICE_initialHEFF to pkg/seaice
2837    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2838    
2839  checkpoint48g_post  checkpoint48g_post
2840  --- EOS:  --- EOS:

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