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revision 1.16 by cnh, Tue Nov 3 15:31:08 1998 UTC revision 1.966 by jmc, Fri Mar 7 19:25:48 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    checkpoint59o
8    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
9    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
10      move a few statemens out the main loop into separate loops
11    o pkg/shelfice:
12      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
13        (kg/m^2/s), does not break tests, because in verification/isomip,
14        rhoConstFresh=rhoConst (by accident)
15      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
16      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
17        new file model/src/seawater.F, so that they are available for all pkgs.
18      - convert potential temperature into in-situ temperature. This changes the
19        isomip tests => update tests
20    o add a flag writePickupAtEnd (default=true) to be able to suppress
21      writing a pickup at the last timestep
22    o tools/mpack-1.6 :
23      - disable automake (not working) and autoconf (not needed).
24      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
25        also cleaner with much less compilation warnings.
26    o pkg/profiles:
27      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
28      (for "less than 32 characters name" compiler requirement)
29    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
30      conditions that have a different sampling frequency than S/T/U/V obcs
31    o pkg/diagnostics (stats-diags):
32      - fix global Min/Max in case 1 processor get only empty tiles
33    o genmake2: replace (4 times)
34         make genmake_tc_1.o >> genmake_warnings 2>&1
35      with
36         COMM="$CC $CFLAGS -c genmake_tc_1.c"
37         echo $COMM >> genmake_warnings
38         $COMM >> genmake_warnings 2>&1
39      to make genmake2 always see the value of CC as specified in the optfile.
40    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
41      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
42      - modify verification advect_cs test to test SOM-advection on CS-grid.
43    o pkg/ctrl:
44      - Rewrite of ctrl_map_ini_ecco.F,
45        introducing a generic routine (ctrl_map_ini_gen.F).
46      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
47    
48    checkpoint59n
49    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
50      number in dedicate array "hdiag":
51      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
52        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
53      - many small changes (integer format) for large number of diagnostics
54      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
55        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
56    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
57      usingSphericalGrid, this allows to define the rotated grid coordinates
58      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
59      geographical coordinates according to the inverse of the rotation defined
60      by the Euler angles, so that Coriolis parameter and online-interpolation by
61      exf works with the geographical coordinates on XC/YC/XG/YG.
62      Naturally, this feature does not work with all packages, so some
63      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
64      profiles), because there the coordinates are assumed to be regular
65      spherical grid coordinates.
66    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
67      - introduce isopycnal diffusion coefficient control.
68    o tools/adjoint_options:
69      - additional control vector components.
70    o pkg/mnc: have mnc create marginally meaning full coordinate variables
71      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
72    o pkg/mypackage:
73      - add example of read/write pickup for state-var ;
74      - add entry points to the main code for state-vars diags & write-pickup.
75    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
76      transitions for useExfYearlyFields
77      - add new subroutine that determines the file to read from for
78        use*YearlyFields = .TRUE. and .FALSE.
79      - add a verification experiment to global_with_exf that tests
80        useExfYearlyFields with USE_EXF_INTERPOLATION defined
81    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
82      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
83      subroutines (which could be generated from a template, because they are
84      almost identical), for now they are included in obcs_prescribe_read.F for
85      simplicity
86    o pkg/exf:
87      - add a little more diagnostic to exf_interp_read (in analogy to
88        mds_read_field, can be turned off with debugLevel < debugLevA=1)
89      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
90        ugly but fast by unrolling short inner loops, inserting a unroll=8
91        directive in routine lagran, and splitting a loop and making do while the
92        outermost loop (the latter requires the intoduction of index arrays)
93    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
94    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
95      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
96    o verification/seaice_obcs: updated for restart test and latest options
97    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
98      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
99      for now this is only available for the C-grid code and also within
100      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
101    
102    checkpoint59m
103    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
104      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
105    o gad_som : fix flux output (& diagnostics) to have same units as other  
106      advection scheme fluxes (was previously multiplied by deltaT).  
107    o added verification/seaice_obcs both to test seaice open boundaries
108      and to provide an example matlab scrpt for generating them
109    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
110    o pkg/salt_plume: clean up salt_plume_frac.F to
111      remove redundancy in PlumeMethod 1 and 4
112    o pkg/kpp: added saltplume diagnostics
113    o pkg/obcs and pkg/seaice:
114      - do not set uice and vice to zero when OB*icefile are unspecified
115      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
116      - moved seaice tracer obcs after call to seaice_growth
117    o pkg/salt_plume: added various options for salt plume depth
118      criterion and for vertical distribution of the salt
119    
120    checkpoint59l
121    o pkg/ptracers: new version of ptracers pickup:
122      read meta file and write only fields which are needed to restart.
123      ( same logic as main pickup file ; also using pickupStrictlyMatch )
124    o pkg/seaice:
125      - add timescale for melting due to warm mixed layer as a means of
126        setting SEAICE_availHeatFrac more conveniently
127      - add a CPP-flag/runtime parameter check for flooding algorithm
128      - reformulated availHeat in seaice_growth.F to be independent of AREA
129    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
130      unit changes
131    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
132    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
133      SX vector computer.
134    o pkg/seaice:
135      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
136        seaice forcing fields can now be read only through pkg/exf
137      - removed some unused halos
138    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
139    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
140      or U/VICE from U/VWIND before computing U/VSTRESS
141    
142    checkpoint59k
143    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
144      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
145    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
146      all experiments pass when compile with un-initialised var. checking option.
147    o added pkg/salt_plume
148    o script to test restart (for now, in MITgcm_contrib/jmc_script)
149    o pkg/seaice: new read/write pickup version.
150      read meta file and write only fields which are needed to restart.
151      ( same logic as main pickup file ; also using pickupStrictlyMatch )
152    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
153    o lab_sea.hb87: modify the domain & update output.hb87.txt :
154      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
155      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
156      process. Fixed here by closing the domain at the Northern boundary.
157    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
158    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
159      a set of consecutive levels in/from a 3-D array.
160    o pkg/ptracers:
161      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
162      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
163    
164    checkpoint59j
165    o in pkgs: dic, obcs, offline, rbcs:
166      standard way to compute coeff. for time interpolation between 2 time reccords
167      which retains full precision (& make results less dependent on compiler).
168      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
169    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
170      packages instead of reading ice cover and wind speed separately
171    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
172     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
173      to allow to compile customized code before the update)
174    o cleaning-up:
175      - fix CPP instruction syntax in pkg/obcs
176      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
177        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
178      - fix some threads issue in IO parts.
179    o pkg/dic:
180      - add tons of "_d 0" (--> much better testreports !)
181       and then update outputs of tutorial_global_oce_biogeo
182    o pkg/mom_fluxform:
183      add a special version of momentum advection intended to conserve momentum
184      next to a bathymetry step or a coastline edge. (default = off = #undef)
185    o new read/write pickup version:
186      - for now, only implemented for main (mdsio) pickup file.
187      - write out only what is needed to restart; merge pickup_nh , pickup_ph
188        and main pickup together.
189      - read meta file; read only what is needed to restart; stop if a field
190        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
191        if it make sense (even if the restart is not perfect).
192      - if no meta file, assume that pickup to read corresponds exactly to
193        a pickup that would currently be written.
194      - read pickup written in the old format (until checkpoint59i) if it
195        recognizes an old meta file (no field-list).
196      - add a meta file in exp. which starts from a pickup: 2 cases:
197        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
198         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
199        b) a meta file describing the content of the associated pickup file
200         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
201    o pkg/mdsio & pkg/rw:
202      - new routine to read a meta file ; new set of routine to read
203        Multiple-fields file (with meta file).
204    o added open boundary conditions capability for seaice
205        HSNOW, HSALT, UICE, and VICE
206    
207    checkpoint59i
208    o adjoint:
209      * fix multiDimAdvection adjoint
210        (partial recomputation problem by TAF for fVerT(:,:,kDown)
211        and comlev1 size definition (maxpass vs. max. number of tracers)
212      * verification/global_ocean.90x45x15 adjoint now tests
213        NLFS and multiDimAdvection using DST3 (=30)
214      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
215    o pkg/kpp: add "_d 0" to real constant (if missing);
216      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
217      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
218    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
219      for internal parameters related to restart process (formerly from PARAMS.h)
220      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
221    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
222      as argument. (only atm2d & obcs write_pickup have not yet been updated)
223    o pkg/monitor:
224      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
225      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
226      - account for deep Atmosphere factor and density factor (anelastic)
227    o added open boundary conditions capability for seaice HEFF and AREA
228    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
229      thermodynamics
230      - requires a little reorganization, which affects the testreport results
231        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
232        so that now the conservative form is tested
233      - add a few comments
234    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
235    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
236    o add new diagnostics to seaice: advective, diffusive fluxes (only for
237      multidim-advection, for scheme 2 they are not filled) and transports,
238      thermodynamic growth rates
239    o change units of EmPmR (inside the code, + within coupling interface)
240      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
241      Affects results @ truncation level (cg2d match) and update output of
242       experiments: lab_sea(6), global_ocean.90x40x15(10),
243      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
244      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
245      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
246      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
247    
248    checkpoint59h
249    o pkg/exf:
250      - improve vectorization by moving if-statement out of loops in
251        exf_mapfields, exf_radiation
252      - exf_bulkformulae.F: introduce 2D fields and vectorize code
253    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
254    o testreport:
255      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
256        monitor & update offline_exf_seaice exp. output.
257      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
258    o pkg/seaice:
259      - bug fix in the evp solver: boundary conditions were affected be
260        masking of zMax/zMin (changes results)
261      - minor bug fix in boundary conditions in seaice_calc_strainrates
262        (changes results for no_slip)
263      - seaice_lsr.F: make interpolation of eta dependent on boundaries
264      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
265      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
266        stress formulation and no-slip boundary conditions
267    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
268      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
269    o pkg/seaice: a first HSALT time stepping equation has been checked in
270    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
271      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
272      without requiring DO-IF statements
273    o pkg/thsice:
274      use continuous power-law function for partition of energy between lateral
275      melting/freezing and thinning/thickening ; old code using step function
276      still available with #undef THSICE_FRACEN_POWERLAW
277      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
278    o testreport: change AD testing : check against results/output_adm.txt
279      using same scripts as for forward test.
280    
281    checkpoint59g
282    o adjoint testing: in preparation for changing testreport:
283      - output format: cost and grad written on separated lines
284      - ad output results in directory "results" (instead of "results_ad")
285    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
286    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
287    o pkg/ecco: allow user defined cost function contributions
288    o testreport:
289      Allow to choose (per experiment) the list of tested output variables
290       and the main variable (used to issue a pass/FAIL ) ;
291      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
292      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
293      Also modify printing of summary:
294       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
295       b) echo the list of tested variables in the individual summary.txt of
296          each experiment.
297    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
298      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
299      (but still depend on the tile decompostion of the domain).
300    o pkg/seaice: change a discretization detail to make the B-grid code
301      "more symmetric". This change is likely to remove all "ridges/leads" that
302      where quasi-aligned with the grid in B-grid solutions. It may also be
303      the solution to the stress coupling issues with the B-grid.
304    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
305      remove .cvsignore from input dir. (since testreport no longer run here).
306    o pkg/thsice:
307     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
308     - fix reshaping of sea-ice just after advection:
309       melt all the ice only if ice-volume is too small.
310     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
311       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
312     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
313    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
314      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
315    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
316      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
317      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
318      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
319      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
320      -> update output.txt
321    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
322     this affects truncation error: -> update output.txt of exp:
323      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
324      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
325    
326    checkpoint59f
327    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
328    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
329      a bounded range (in forward mode)
330    o pkg/ecco, ctrl, autodiff and mom_common:
331     internal parameter controls, completements of implementations
332    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
333    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
334      (not seem any difference in testing results).
335    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
336       at face corners.
337    o pkg/generic_advdiff:
338     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
339      loop range indices for computing vertical advection tendency
340      and do the calculation in the interior only (no overlap) ;
341      for now, only implemented for SOM advection (to save CPU time).
342     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
343    o exch2 adjoint
344      First set of changes:
345      - add exch2 hand-written adjoint templates
346      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
347        This will require cleanup in pkg/autodiff/*.F
348        (changed routines currently kept separate in verif. code/)
349      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
350        that used to hide exch2 or cubed-sphere specific code
351        (commented via 'cph-exch2')
352    o pkg/seaice
353      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
354    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
355       output of global_ocean.cs32x15.thsice .
356    
357    checkpoint59e
358    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
359      for B-grid vector (not yet tested) and C-grid vector (<- only used
360      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
361    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
362      (#ifdef ALLOW_SALT_PLUME)
363    o gather_2d/scatter_2d: removed halo regions
364    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
365      scheme and the corresponding test case (under front_relax dir). For now,
366      only available with Skew-flux form and not yet tested in realistic set-up.
367      adjoint: store directives updated, but gradient checks deteriorated,
368      so maybe GM/Redi adjoint is now broken.
369    o seaice adjoint
370      * add AREA, HEFF, HSNOW as control variable
371        (should not change lab_sea results)
372      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
373    o pkg/seaice:
374      * added computation of saltFlux in seaice_growth;
375        For time being, sea ice salinity is assumed constant
376        contribution of snow flooding to freshening of sea ice is neglected.
377        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
378        defaults to 0.0 in order to maintain backward compatibility.
379        Typical values for SEAICE_salinity are 4 to 10 g/kg.
380      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
381      * added SEAICE_availHeatFrac, which specifies fraction of surface level
382        heat content used to melt or grow ice
383      * commented out cap of HICE: it helps keep ice thinner
384      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
385      * applied OBCS T/S mask to HEFFM sea ice mask
386    
387    checkpoint59d
388    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
389     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
390     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
391    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
392     and change default value of parameter "GM_Small_Number";
393     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
394       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
395       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
396    o pkg/ecco: cost function when applying pkg/smooth to controls
397    o pkg/ctrl: add forcingPrecond run time parameter
398    o pkg/seaice:
399     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
400     - fix bug in metric terms of u-equation in LSR solver (implicit part),
401       changes verification/lab_sea
402     - rearrange implicit part of u-equation in LSR solver to make it easier to
403       read, understand, and debug. This causes changes at the truncation level.
404     - fix (serious) bug in the boundary conditions (sign error in the implicit
405       part) of the LSR solver. Changes all LSR results.
406     - fixed problem with HSNOW initialization to avoid thick snow when AREA
407       is initilized with small values - does not change lab_sea results.
408     - added HsnowFile initialization capability
409    o pkg/smooth: addition to model/src and pkg/ctrl so allow
410     initialization of pkg/smooth and application to control vector
411    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
412    o dependencies: pkg/profiles requires pkg/cal
413    o pkg/profiles:
414     - added option ALLOW_PROFILES_GENERICGRID
415         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
416         that interpolation information (grid points and coefficients) is provided
417         within the netcdf input files.
418         -> sample matlab scripts can be found in MITgcm_contrib/gael
419         that allow you to prepare netcdf input files.
420     - also modified: cleaner include statements, cleaner error print statements,
421       cleaner stops when error, and more tests of the netcdf input files consistency.
422    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
423    o pkg/seaice:
424     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
425       requires a new routine: seaice_diagnostics_fill.F
426     - make sure that seaice does not move if not forced (pressure replacement
427       method, Hibler and Ip, 1995), changes results
428     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
429     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
430       It is turned off by default (=-1.), because it changes the results.
431     - make it possible to read AREA from a file, too.
432    
433    checkpoint59c
434    o add S/R and diagnostics for oceanic mixed-layer depth
435    o move GMRedi call after all vertical mixing schemes (including KPP)
436    o pkg/thsice:
437     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
438      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
439    o pkg/obcs:
440     - bug fix for balance code
441    o pkg/seaice:
442      - allow values of SEAICE_elasticParm > 1
443      - add new parameter SEAICE_evpTauRelax as an alternative
444        to SEAICE_elasticParm
445      - make lsr boundary conditions free slip (by default), changes result
446      - add code for no slip boundary conditions for lsr
447      - set minimum of zeta to zero (and not 4e8) (changes results)
448      - add a cap on AREA after advecting AREA if seaice_growth is not called
449    o change calculation of Visbeck K:
450      - no longer depend on tapering scheme; instead, compute slope (limited
451        by GM_maxSlope). this is equivalent to what was comuted before with
452        clipping or linear tappering.
453      - fix vertical averaging (wrong by 1/2 level)
454      - leave the old version (but will not be maintained) within
455        #ifdef OLD_VISBECK_CALC / #endif
456      - update output of exp. ideal_2D_oce
457    o change error catch in calc_r_star to improve vectorization
458    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
459      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
460    o adjoint:
461      Re-organized adjoint checkpointing according to Matt Mazloff
462      (but with modifs/completions/cleanups)
463      Storing is now bundled into large arrays to optimized I/O
464      (and second step in cleanup of the_main_loop)
465    
466    checkpoint59b
467    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
468      - export/import (between ocean & coupler) fields needed for ocean DIC.
469    o pkg/seaice:
470      - get rid of three more exchanges seaice_calc_viscosities (required
471        different loop boundaries in seaice_lsr and seaice_ocean_stress)
472      - bug fix in seaice_ocean_stress (update of lab_sea required)
473      - reduce loop boundaries to necessary minimum also in seaice_evp
474      - go back to the old way of computing deltaC/Z as the adjoint likes that
475        better
476    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
477      passive tracer to an Age Tracer) + update output.txt
478    o pkg/exf:
479      - implement A-grid / C-grid selection for wind-stress input files.
480      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
481      for now, in exf_bulk_largeyeager04.F only :
482      - change implementation for case where windspeed + 2. components wind-stress
483        are read-in. AND use rhoConstFresh to convert evap.
484    o pkg/seaice:
485      - use correct EXCH_UV for wind-forcing (on A-grid).
486      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
487        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
488    o pkg/exf:
489      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
490      EXF_INTERPOLATION:
491      - merge global_with_exf/code version of exf_interp_read.F
492        to the main code ;
493      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
494        reading the file ; Important: This options needs to be defined to recover
495        previous code.
496        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
497      - no longer loose real*8 precision along the way when using exf_iprec=64.
498    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
499      - change discretisation of evp-solver in order to avoid another exchange
500        (changes lab_sea) and clean up a little
501      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
502        help the adjoint (this also changes the results slightly)
503      - add a few "_d 0" where they had been missing in seaice_evp.F
504      - cleaning up: remove unused seaice_calc_rhs.F
505    o pkg/exf: some cleaning-up:
506      - change various "constants" into runtime parameters
507      - cleaned-up Large&Yeager04 routine which should eventually
508        replace exf_bulkformulae.F (changed names of S/R and CPP)
509        and merged various ALLOW_ATM_WIND options
510     only used with thsice pkg (in thsice_get_exf.F):
511      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
512        which are used when useStabilityFct_overIce=TRUE (= the default)
513      - change default values of ice & snow emissivity and scale downward LW
514        by ice & snow emissivity.
515    o pkg/thsice:
516     fix few little problems, in thsice_calc_thickn.F:
517      - growth vertically (and not laterally) if iceFrac == iceMaskMax
518      - melt only laterally if hIce < hThinIce (as the comments say)
519      and in thsice_extend.F:
520      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
521      - start to form ice as soon as the minimum ice-volume is reachable.
522     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
523      and cpl_aim+ocn
524    o pkg/kpp
525     - move computation of surface related input fields to KPP into a new
526       subroutine kpp_forcing_surf.F
527     - remove wrong (within bi,bj loops) EXCH calls.
528     - little cleaning (add argument myThid in last position, cvs header ...)
529     - for now, fix conservation problem by exchanging KPPviscAz (may not
530       be the best fix)
531    o pkg/seaice
532     - check for inconsistent evp parameter/cpp-flag combination
533     - remove leftover errIO flat for obsolete name list error handling
534    o OpenAD
535     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
536    
537    checkpoint59a
538    o pkg/seaice: some parameter clarifications and a little bit of clean up
539    o pkg/thsice: rename run-time parameters:
540       himin       -> hIceMin
541       himin0      -> hThinIce
542       hihig       -> hThickIce
543       i0          -> i0swFrac
544       transCoef   -> bMeltCoef
545       frac_energy -> fracMelting
546      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
547       with default values (for now) that do not change the results.
548      remove old version of thsice vars advection in pkg/seaice.
549    o in FFIELDS.h:
550      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
551      - make pLoad & sIceLoad always available (but still only used if
552         ATMOSPHERIC_LOADING is #define).
553    o pkg/kpp: replaced _KPP_RL with _RL
554    o bug fixes for vertical diffusivity computations when both KPP and
555        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
556        are no longer updating the vertical diffusivity array
557        (passed as argument) but are (re-) setting those arrays.
558    o pkg/seaice: fix bug in evp solver, while doing that
559      - change (improve?) discretization of stress computations for both
560        cgrid-lsr and evp solver
561      - add a new routine to compute strain rates
562      - the above changes lab_sea results
563      - add no slip conditions for evp solver (off by default), lsr-version
564        may follow
565      - fix exchange for shear at Z-points (does not change lab_sea)
566      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
567        (to force the user to pick a time step since there is not "safe" way
568        of choosing it)
569      - add principal stress diagnostics
570      - rearrange fields for evp a little to avoid having to call a: too many
571        exchanges and b: exchanges for stress trensor components which we do
572        not have.
573      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
574        of evp, complete rewrite for lsr case (latter is does not yet work
575        in all cases)
576    o pkg/kpp: add code to have mixing in shelf ice caverns
577      - add myThid to all kpp routines (long overdue)
578    
579    checkpoint59
580    o pkg/exf:
581      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
582        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
583      - move exf header files from lower_case.h to UPPER_CASE.h ;
584        add missing cvs Header & Name
585      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
586      - add namelist param. selectStressGridPosition, exf_monFreq
587      - retire many _CLIM routines, and remove data.exf_clim
588        + params moved to data.exf
589        + climsst, climsss now handled by exf_set_gen, i.e.
590          climss?period=0 refers to constant field,
591          climss?period=-12 to monthly forcing
592      - split up namelists in data.exf
593    o pkg/seaice:
594      - remove seaice_exch and seaice_exch_uv
595      - remove superfluous exchange of theta
596      - add myThid to seaice_budget_ocean/ice
597      - add new interface for atmospheric wind forcing (C-grid only)
598        + new routine
599        + two new field (taux, tauy for stress over ice)
600        + removed one global field (DAIRN) for C-grid case only
601    o pkg/thsise
602      - 2nd set of modifs for thsice adjoint in conjunction with exf
603    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
604    
605    checkpoint58y_post
606    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
607      vertical diffusivity, similar to that in MOM4; turned on using
608      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
609      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
610    o Added capability for 3D specification of background vertical diffusion
611      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
612      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
613      "data" file that contains the 3D vertical diffusivity coefficients.
614    o ice dynamics (pkg/seaice) with thsice thermodynamics:
615      - add code within pkg thsice to advect & diffuse sea-ice fields
616      similar to (and will replace) what has been added in  seaice_advdiff.F,
617      but: - conserving Mass, Heat & Salt.
618           - better when using non-linear advection scheme (not yet fully tested)
619           - can also be used in atmospheric set-up (for now, only the diffusion).
620    
621    checkpoint58x_post
622    o IO option for global-file compact format:
623      - add options when generating topology (utils/exch2/matlab-topology-generator)
624      - add I/O capability (pkg/mdsio).
625      - adapt utils/matlab/rdmds.m to read this format.
626      for now long-line format not yet supported by pkg/mdsio (& exch2).
627    o shelfice: add a few diagnostics
628    
629    checkpoint58w_post
630    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
631      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
632      (and replace horiVertRatio in NH code).
633      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
634                         and tutorial_plume_on_slope (sensitive to truncation)
635    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
636      directly to drive seaice model (C-grid only)
637    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
638     - reintroduce computation of wind from stress,
639     - compute tau (in exf_bulkformulae.F) from windstress averaged to
640       mass points to avoid tau = 0
641     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
642    o rdmnc.m: make it work with "global" files created with gluemnc
643    o rdmnc.m : some improvements in dealing with singleton dimension
644      (tested on all testreport mnc output files).
645    o genmake2: disable pkg/profiles if netcdf test fails.
646    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
647    o move call to cal_readparms up to make calendar parameters/variable available
648      to all packages
649    
650    checkpoint58v_post
651    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
652      useDynP_inEos_Zc tested.
653    o pkg/exf: changes to properly interpolate/mask/scale initial fields
654    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
655      and portions thereof.  See read_cs.txt for description and examples.
656    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
657      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
658      following the great-circle arc between those 2 points.
659    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
660      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
661    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
662     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
663     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
664     - still needs work (not working with some options ; efficiency to improve)
665       and serious testing.
666     - use this scheme for temperature & salinity in 2 advection test exp.:
667       advect_xy & advect_xz, respectively.
668    
669    checkpoint58u_post
670    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
671    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
672    o testreport: add option "-skipdir" to skip some test.
673    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
674      momentum calculation.
675    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
676    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
677      remove checkpoint.F and the_correction_step.F (no longer used);
678      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
679    o add option (linFSConserveTr) to correct for tracer source/sink due to
680      Linear Free surface
681    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
682    o pkg/thsice: fix reading mnc-pickups
683    
684    checkpoint58t_post
685    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
686    o pkg/mdsio:
687     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
688       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
689       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
690     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
691     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
692       either MDS_READ_FIELD or MDS_WRITE_FIELD )
693     - new S/R (to replace MDSWRITEMETA), which allows to write more
694       informations (variable names, time ...) to meta files.
695     - modify rdmds.m to give back the meta file content.
696    o pkg/diagnostics: change vertical interpolation to be safer, and more
697       flexible (define p-levels to interpolate to in data.diagnostics);
698      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
699       diagnostic pointer.
700    o pkg/seaice: more cleaning up of seaice_growth, added many comments
701    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
702    o fix multi-category seaice:
703     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
704       SEAICE_MULTICATEGORY
705     - fix short wave heat flux
706    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
707       and allow to use EVP solver. Change forward lab_sea: test both EVP
708       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
709    o Initial check-in of lab_sea adjoint
710      (very similar to natl_box_adjoint/code_seaice)
711      * used C-grid and EVP solver
712      * used KPP, GM/Redi
713      * uses inAdExact=.TRUE.
714      * gradient checks fail for both ADM and TLM
715        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
716        f.d. gradients actually seem more problematic than ADM, TLM gradients;
717        issue is related to forward mismatch between g77 an ifort
718    o pkg/seaice: overhaul of thermodynamics
719     - growth.F and groatb.F are replaced by new routine seaice_growth.F
720     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
721     - move a few global fields out of SEAICE.h into seaice_growth.F and
722       make them 2D (FICE/QNETO/ ...)
723     - remove FO (it is the same as QNETO)
724     - introduce a few local fields to avoid modifying external fields such
725       as atemp, etc.
726    
727    checkpoint58s_post
728    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
729      changed exf_set_gen.F so that
730        genperiod=0 means input file is one time-constant field and
731        genperiod=-12 means input file contains 12 monthly means
732    o CG2D: use pre-computed solver main-diagonal (stored in common block);
733      this affects truncation error ; generate new output file for exp. which
734      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
735        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
736        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
737        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
738        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
739        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
740    o start implementation of deep-atmosphere and anelastic formulation
741    o verification: remove 2nd copy of input files and use script "prepare_run"
742      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
743    o mom_common/vecinv/fluxform: fix a few initialisation isssues
744    o profiles: fix for multithreaded case
745    
746    o diagnostics: rename few diags:
747      s/'PRESSURE'/'RCENTER '/g
748      s/'TICE    '/'oceFreez'/g
749      s/'TAUX    '/'oceTAUX '/g
750      s/'TAUY    '/'oceTAUY '/g
751      s/'SWFLUX  '/'oceQsw  '/g
752      s/DIFx/DFxE/g
753      s/DIFy/DFyE/g
754      and add few ocean-forcing diagnostics:
755      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
756    o modifications to pkg/seaice/growth.F and budget.F, which change results of
757      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
758      as actual snow thickness.  It now refers everywhere to effective snow
759      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
760    
761    checkpoint58r_post
762    o modifications to pkg/seaice/growth.F, which change results of
763      lab_sea experiment: fixes pertain to melting snow over open water, to
764      masking EVAP under sea ice, and to using the correct AREA variable for
765      computations of EVAP, PRECIP, HSNOW, and GHEFF
766    o add ability to read bathy, salt, and theta using MNC (off by def)
767    o add flooding algorithm and advection of HSNOW for pkg/seaice;
768      both are turned off by default and do no change any results
769    o seaice advection with pkg/thsice: a step toward the use of non-linear
770      advection scheme, but #ifdef or commented out for now (requires more EXCH).
771    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
772      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
773      in natl_box (affects results @ truncation level: update output.txt)
774    o multi-threading and IO:
775      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
776      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
777        (needed to work with SingleCpuIO): tested in all verif. exp.
778    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
779      affects the results (but none of the verification test uses this scheme).
780    o Adding some pkg/diagnostics capability to pkg/seaice
781      (will certainly be subject to changes)
782    o ctrl: adding new control variables:
783      lwflux, lwdown, evap, snowprecip, apressure, runoff
784    
785    checkpoint58q_post
786    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
787      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
788      high_res_cube configuration by 4% on Columbia.
789    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
790      add (in global_with_exf/code) a version of EXF_INTERP_READ without
791      dynamical allocation (seems to work in multi-threaded).
792    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
793      single CPU io) so that TAF does not have to see EESUPPORT.h
794    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
795    
796    checkpoint58p_post
797    o obcs: stop if obcs is used with useCDscheme = .true.
798    o shelfice:
799     - fix a sign error so that no slip at shelfice interface works
800     - remove stop for combination non-hydrostatic code and shelfice. That does
801       not mean, that the results are correct, but at least they are numerically
802       stable
803    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
804    o added adjoint exch routined for all exch*3d* routines
805      and updated flow directives
806    
807    checkpoint58o_post
808    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
809      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
810    o change controling S/R for writing pickup file (new S/R do_write_pickup)
811      and clean-up reading/writing of pickup files.
812    o fix local version of read/write pickup (NH part) in rotating_tank/code
813    o simplify EXCH interface:
814     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
815     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
816    o added the regrid package
817    o shelfice:
818     - add a simple boundary layer scheme to reduce noise
819     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
820    
821    checkpoint58n_post
822    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
823       local variable (not in common block).
824    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
825      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
826      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
827        to work with SingleCpuIO.
828    o add "_d 0" to real constant of pkg/cfc subroutines ;
829       update exp. cfc_exemple & tutorial_cfc_offline output files.
830    o multi-threading and IO:
831      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
832        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
833      - barrier before and after reading.
834      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
835      - avoid using MDS_WRITELOCAL for LAND pkg output.
836      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
837        common-block variables ; Allows multi-threading with master-thread IO.
838    o change default MAX_NO_THREADS from 32 to 4 ;
839      and stop cleanly when MAX_NO_THREADS is too small.
840    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
841    
842    checkpoint58m_post
843    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
844       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
845    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
846       keep global_ocean.90x40x15 (for AD testing) with former secondary test
847       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
848    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
849        add MITgcm_tutorials (= code + all the tutorials)
850    o ecco, option to compute cost for total ssh (mean+anom)
851    o consistent with addition of ptracer and ssh in pkg/profiles
852    o profiles: adding ptracer and ssh
853    o testreport: change multi-test output-file name
854      (from output.txt.{name} to output.{name}.txt)
855    o profiles: now ok for mutli-tiles case
856    o seaice: add 4 parameters for different advection schemes for area,
857      (effective) seaice thickness, enthalphy, and snow height. Their default
858      is the standard parameter SEAICEadvScheme
859    o calc_gw:
860     - add cosFacU in zonal viscous flux (harmonic.visc.).
861     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
862       of tutorial_plume_on_slope.
863    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
864    o calc_gw: true flux-form, account for horizontal grid spacing.
865      update rotating_tank results, but not plume_on_slope (affected at
866      truncation level, 11 digits).
867    
868    checkpoint58l_post
869    o calc_gw:
870     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
871     - remove side-drag for now (need to fix it); update plume_on_slope results.
872     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
873    o commit code to make SST/SSS weights spatially variable
874      (based on either variable in-situ or variable initial T/S weights)
875    o pkg/ecco:
876      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
877        now based on horizontally varying weights wthetaLev, wsaltLev
878      * cost_averagesflags now returns year indices in addition to day, month
879      * sflux balance is performed on annual basis
880        (sflxumm, sfluxmm2, bal_sfluxmm)
881      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
882        including separate counting and multipliers
883    o pkg/rbcs
884      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
885    
886    checkpoint58k_post
887    o testreport:
888     - always build in dir. "build" (if not there, mkdir build instead of building
889       & running in input)
890     - run in dir run (if it exists), in build otherwise.
891     - call prepare_run (if input/prepare_run exists)
892     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
893    o pkg/exf modifications to interpolation and rotation routines for more
894       reasonable treatment of North Pole singularity: for tracers North Pole
895       value is set to northernmost zonal-mean value, for zonal velocity it is
896       set to zero, and for meridional velocity it is set to northernmost value.
897    o pkg/exf/exf_check_range.F
898     - add tile index to diagnostics and move stop statement to the very
899       end of the routine.
900    o pkg/diagnostics: (diagnostics_main_init.F)
901      define title of isomorphic variables according to the current config.
902    o pkg/thsice with pkg/seaice dynamics:
903    - fix domain of computation (interior only, required for exf) and do exchanges
904    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
905    o towards a standard way of dealing with multi-threading in MONITOR
906      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
907    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
908       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
909    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
910    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
911    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
912       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
913    o tracer advection:
914     - clean-up and simplify calc_common_factors.F
915     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
916       advection subroutine (but still not used within DST advection S/R)
917    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
918    
919    checkpoint58j_post
920    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
921      from file (collects calls previously in FORWARD_STEP)
922    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
923    o adjoint store dir. adjusted accordingly
924    o genmake2
925      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
926    
927    checkpoint58i_post
928    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
929      on wind stress (SEAICEstressFactor defaults to 1.)
930    o Total number of Timers is finite (<=40): comment out 2 non-essential one
931      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
932    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
933      on CS-grid: no longer loosing mass.
934    o exf & curvilinear-grid: no longer modify longitude xC & xG.
935    o pkg/ggl90: fix sloppy output and fix a bug
936    o pkg/seaice: added SEAICEuseEVPpickup parameter
937      - Set to false in order to start EVP solver with
938        non-EVP pickup files when using SEAICEuseEVP
939      - fix sign error in diffusion in seaice_calc_rhs
940    
941    checkpoint58h_post
942    * Modifications for bottom topography control
943      o replace hFacC by _hFacC at various places
944      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
945      o add non-self-adjoint cg2d_nsa
946      o update autodiff support routines
947      o re-initialise hfac after ctrl_depth_ini
948      o works for 5x5 box, doesnt work for global_ocean.90x40x15
949    * Adding verification for 5x5 box (4-layer) bottom topography control
950    
951    checkpoint58g_post
952    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
953       used for mean seasonal cycle, mean diurnal cycle); add an example
954       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
955    o pkg/ggl90:
956      - add parameter (minimum surface kinetic energy)
957      - fix bug (avoiding division by zero)
958    o couple pkg/thsice to pkg/seaice:
959      - modify advection in seaice to accomodate new scalar fields to be advected
960      - only muliDimAdection scheme work with seaice/thsice
961      - mapping of thsice-variables to seaice-variables, back and forth
962      - does not break the verification experiments, but does not give the
963        desired results either
964    o pkg/seaice
965      - make (default) second order advection a bit less confusing?
966    
967    checkpoint58f_post
968    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
969      to pkg/seaice):
970      - new routines thsice_map_exf and thsice_get_exf provide the interface
971      - add an additional formal parameter to thsice_solve4temp
972    o pkg/exf:
973      - add new fields wspeed, snowprecip (to be able to couple to thsice)
974      - correct Stefan-Boltzmann constant
975      - new parameter for longwave surface emittance
976      - separate some stuff from exf_bulkformulae into new routines  
977        exf_radiation, exf_wind
978      - add new parameters and constants: longwave emissivity for ocean, ice
979        and snow, evaporation parameters over ice
980      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
981        either wind from stress or stress from wind
982    o pkg/thSIce:
983    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
984    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
985       and THSICE_CALC_THICKN
986    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
987    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
988      to make debugging easier.
989    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
990    o pkg/bulk_force:
991      - clean-up comments and parameters ;
992      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
993    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
994      generate new output for test-experiment: aim.5l_cs.thSI
995    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
996      testreport accordingly
997    
998    checkpoint58e_post
999    o SEAICE_CGRID adjoint done
1000    o R_STAR adjoint implemented.
1001      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1002      * need to sort out init. of h0facc, etc.
1003    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1004      to be able to use it in pure forward.
1005    
1006    checkpoint58d_post
1007    o upgrade simple test-experiment to tutorial example:
1008     step.1: duplicate the experiment and (step.2) will remove the old copy.
1009      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1010      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1011      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1012      tutorial_global_oce_biogeo    <- copy of dic_example
1013      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1014      tutorial_plume_on_slope       <- copy of plume_on_slope
1015      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1016      tutorial_global_oce_optim     <- empty for now (David ?)
1017      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1018     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1019    o correct a sign problem in cost_scat.F
1020    o obcs and ptracers: fix boundary conditions for advections schemes
1021      with larger stencil
1022    o thsice adjoint: start
1023    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1024      completeness
1025    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1026      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1027    o ptracers adjoint:
1028      * avoid extensive recomputatations
1029      * fix missing re-init. of gptr (missed by TAF)
1030    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1031      me to turn off the excessive output to STDOUT that this package produces
1032    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1033      and add those terms in Vector-Invariant formulation.
1034    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1035      if the control period (xx_hfluxperiod etc) is 0
1036    o in profiles pkg, clean routines and fix details
1037    o in ecco pkg, reading ssh data:
1038      fix problem in case the model does not start at iter0=0
1039    o fix mnc-pickup/restart for ptracers
1040    o new package prifiles:
1041      code to compute profile-based cost by Gael Forget
1042      (modifs in ecco, ctrl, autodiff)
1043    o Benign bug fix in initialization (spotted by M. Mazloff) of
1044      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1045    
1046    checkpoint58c_post
1047    o adjoint: finish NLFS adjoint and provide reference output in
1048      verification/global_ocean.90x40x15/results_ad_nlfs
1049    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1050      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1051      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1052      with SEAICE_CGRID defined.
1053    o move calendarDumps from "data" to "data.cal" and clean-up the code
1054      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1055    o add useEXF & useCAL flags (for now, set in hard-coded way)
1056    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1057      (were missing in NH mode, and wrong in quasihydrostatic mode).
1058      waiting for Chris updated version of calc_gw to add those CALLs.
1059    o fix bug in quasihydrostatic S/R ;
1060      add a test for this option: global_ocean.90x40x15.qshyd
1061    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1062      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1063    o add on/off flag useOffLine for package OFFLINE
1064    o seaice:
1065      - modify advection so that it works also on the C-grid
1066      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1067        problem in multi-tile runs with C-grid
1068      - add flags for clipping ice velocities and/or masking solver forcing
1069      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1070        C-grid solver
1071      - added a few comments to seaice_diffusion.F
1072      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1073        are now exclusive)
1074      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1075        required re-ordering the code a little:
1076       + make DAIRN global variable (defined in SEAICE)
1077       + move computation of the viscosities eta and zeta into a new separate
1078         routine (because I need to recompute them in seaice_ocean_stress.F)
1079    
1080    checkpoint58b_post
1081    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1082      update output.txt of exp. aim.5l_cs.thSI
1083    o various mnc cleanups and improvements:
1084      + shrink lookup tables by factor of ~4
1085      + better error reporting when running out of lookup space
1086      + able to handle longer path/file names (up to 500 chars)
1087    o adjoint:
1088      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1089      - TBD: "hidden" mom_vecinv recomp. in dynamics
1090    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1091     (allow to differentiate between forcing components using new integer flags:
1092      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1093     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1094    o ecco
1095      - enable trend removal from SSH anomaly obs.
1096    o adjoint
1097      - a fix for PmEpR when #undef EXACT_CONSERV
1098      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1099      - try to fix "hidden" recomp. in forward_step for NLFS
1100        (NLFS seems broken sometimes after I checked it in)
1101    o seaice:
1102     - add c-grid version of the dynamic solver:
1103       + three new routines that are the c-grid substitute lsr, dynsolver
1104         and ostres
1105       + put a few fields that were local to dynsolver into global common
1106         blocks, so that I can move the computation of stresses etc into
1107         seaice_lsr (saves coding but may break the adjoint).
1108     - replace more hardwired parameters by runtime parameters
1109     - add ice masks that mask the rhs of the implicit solvers where there
1110       is no ice (commented out in seaice_dynsolver, because i am not sure
1111       if this works properly), eventually this should replace the clipping
1112       of ice velocities in seaice_dynsolver to +/-40cm/s.
1113    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1114      include it only where its needed
1115    o move balancing of fluxes before the call of external_forcing_surf
1116    o seaice:
1117      - correct units of turning angles (now they are really in degrees)
1118      - move computation of GWATX/Y out of main routine into dynsolver
1119      - initialize GWATX/Y in seaice_init
1120    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1121      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1122    o seaice: add runtime flags for turning angles (default to zero)
1123    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1124      and trend from exf forcing and ctrl control adjustments
1125    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1126      (since checkpoint57x_post)
1127    o change the default rotation period to 86164.s = the Earth rotation
1128    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1129      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1130    o seaice advection: add code for choosing between the default (2nd order
1131      central differences) and multiDim advection schemes provided by
1132      pkg/generic_advdiff
1133    o seaice:
1134      - removed all references to SEAICE_GRID.h fields from
1135        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1136        (cubed-sphere configuration will change a little)
1137      - grid computations in seaice_init are obsolete now.
1138      - cleaned up code a little so that is easier to read (hopefully).
1139      - added new (better?) discretizations of default advection and diffusion
1140        (turn on with SEAICEuseFluxForm)
1141      - replace 1 in 3d global fields by kSurface in growth.F
1142      
1143    checkpoint58a_post
1144    o seaice:
1145      - bug fix in advect.F
1146    o shelfice:
1147      - separate shelfice load anomaly from pload (breaks with time
1148        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1149        Its default is 0., but it may be computed more cleverly from (unknown)
1150        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1151        done offline. A good approximation of the pressure load anomaly is
1152        necessary to avoid large initial adjustment processes underneath
1153        deep-reaching shelfice.
1154      - small fix in ISOMIP shelfice_thermodynamics
1155      - add more sophisticated thermodynamics of Hellmer (1989), this is
1156        now the default
1157      - give a few constants more intuitive names
1158    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1159      if bulk formulae are used in long integration (especially EmPmR). Turn
1160      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1161      if balancePrintMean, the imbalance that is substracted is printed to
1162      STDOUT.
1163    o fix bug (typo) in obcs_apply_eta.F
1164    o add a new package shelfice which enables us to model the circulation
1165      underneath shelf-ice with draughts of hundreds of meters.
1166     - works
1167     - to do: + include improved thermodynamics
1168              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1169                instead of new field kTopC
1170              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1171                instead of new field R_shelfIce and new code in ini_depth.F
1172                and ini_mask_etc.F?
1173              + adjust vertical mixing schemes?
1174    o seaice pkg:
1175     - add a cpp-flag to include a simple formula for a salinity dependent
1176       freezing point of sea water at the surface
1177     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1178       meridional stresses are now different (and hopefully correct)
1179    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1180       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1181       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1182    o pkg/diagnostics: add options and parameters for regional-statistics
1183       diagnostics ; define regions by reading a region-mask from a file
1184       (might add other options later)
1185    o pkg/bulk_force:
1186     - add option and parameters to use AIM surface-flux formulae.
1187     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1188       others forcing fields (defined in PARM05, parameter file "data") are loaded
1189       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1190     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1191     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1192     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1193       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1194     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1195    
1196    checkpoint58
1197    o add "--embed-source" option to genmake2 which, when the supporting
1198      tools can be compiled (as determined by genmake2) will turn on the
1199      embed_files package which then embeds the entire MITgcm source code
1200      (*.[fFhc] + Makefile) used for the build within the executable
1201      - requested by CNH but off by default
1202      - adds a paltry <9MB to the mitgcmuv executable in most cases
1203      - only writes the output when useEMBEDSRC in eedata is true
1204    o clean up 3-dim. relaxation codes:
1205      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1206      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1207      * Thanks to Tom Haine for testing!
1208    
1209    checkpoint57z_post
1210    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1211      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1212    o fix the pickup behavior for obcs in combination with ptracers
1213    o fix a bug in ptracers_external_fields_load
1214    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1215      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1216    o transfered surface NH pressure to eta field (if exactConserv).
1217    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1218         and update lab_sea output.txt file.
1219    o completing 3-dim. relaxation code: additional term
1220         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1221      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1222      * At compile time, in "EXF_OPTIONS.h" set
1223          #define  ALLOW_CLIMTEMP_RELAXATION
1224          #define  ALLOW_CLIMSALT_RELAXATION
1225      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1226          tauThetaClimRelax3Dim = 15552000.0,
1227          tauSaltClimRelax3Dim  = 15552000.0,
1228      * 3 cases:
1229          1) Use a constant-in-time 3-dim. field
1230          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1231          3) Real-time relax. to time-evolving prescribed field
1232    o Adding Laplacian-type smoothness constraint on
1233      initial and boundary (forcing) controls (ic, bc)
1234      * enable at compile-time via
1235        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1236      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1237      * Absolute scale somewhat unclear so far
1238      * no area weighting was included since no other cost term does so far
1239    
1240    checkpoint57y_post
1241    First step for a NLFS adjoint
1242    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1243    o new init. routines for calc_r_star, calc_surf_dr
1244    o still need to deal with ini_masks_etc
1245    o testreport seemed happy
1246    checkpoint57y_pre
1247    
1248    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1249    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1250    o add new offset feature to offline pkg (plus minor cleanup)
1251    o cfc fixes for final year of integration
1252    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1253      be in GCHEM_OPTIONS).
1254    
1255    checkpoint57x_post
1256    o fix testreport Pb in multiple test experiment.
1257    o cleanup our namelist syntax in verification:
1258      - make it more F95 standards compliant (some work still needed)
1259      - allows the vast majority of our tests to work with gfortran
1260    o Non-Hydrostatic:
1261     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1262     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1263    o Allow to apply AB on T,S rather than on AB(gT,gS):
1264     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1265     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1266       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1267     - need a "clever" read_pickup to restart from the other AB formulation
1268    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1269    o remove some unused variables (reduces number of compiler warnings)
1270    o adjoint
1271      * Disable useVariableViscosity for adjoint for time being
1272        (there are a number of extensive recomputations)
1273      * Initialize certain variables needed for adjoint
1274    
1275    checkpoint57w_post
1276    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1277                 fix the singleCpuIO RS version of MDSWRITEFIELD
1278       and add a WARNING if using globalFiles=T with multi-processors.
1279    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1280      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1281    o tracer advection scheme:
1282      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1283       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1284       was not very convenient).
1285      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1286       (further tests needed for the implicit DST & Flux-Limiter schemes).
1287    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1288      and sRef for convenience, handy, when you want to initialize
1289      ptracers in a large domain with a constant non-zero value. Also,
1290      untangle ptracers_init.F a little.
1291    
1292    checkpoint57v_post
1293    o change dome exp. to use variable viscosity in side-drag terms.
1294    o remove all the files from the cfc_offline test since they are now
1295      incorporated into tutorial_cfc_offline which has been producing
1296      identical results for a few days of testing
1297    o add new parameter: sideDragFactor to enable half-slip-side BC
1298      and change side-drag S/R to use viscosity from mom_calc_visc
1299      (can switch back by setting sideDragFactor=0.); affects results at
1300      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1301       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1302    o vorticity & strain are now computed without masking, to account for
1303      no-slip-side BC in variable viscosity calculation ; mask is applied
1304      anyway later on, before computing advection/coriolis terms.
1305    o modify exp4 to test new obcs support for reading from external files
1306      and for passive tracers
1307    o fix behavior of ptracers_monitor when monitor output is written to a
1308      netcdf-file; still not independent of monitor.F (writes in the same
1309      file).
1310    o change default value of tRef (put a uniform, meaningful value for ocean
1311      & atmos) and initialize sRef (was missing, as Martin mentioned).
1312    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1313      to be proportional to enstrophy dissipation length.  Thus,
1314       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1315      This is now consistent with Smagorinsky and with the manual.
1316    
1317    checkpoint57u_post
1318    o OBCS and PTRACERS: add open boundary support for passive tracers
1319      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1320        OB-values from file; this is not different from the way theta and salinity
1321        are treated
1322      - however, Orlanski-radiation conditions are not supported, and the model
1323        will stop if you use pTracers and Orlanski at the same time.
1324      - beefed up the rountine obcs_external_fields_load: now only those open
1325        boundary values are overwritten with values from files for which there
1326        are really files, otherwise the OB-fields remain untouched. This makes
1327        it possible to use different OBs at different ends of the domain (as
1328        with EXF)
1329    o reduce number of exch calls in shap_filt (s2).
1330    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1331      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1332    
1333    checkpoint57t_post
1334    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1335    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1336      same truncation, independent of the face number: affects affects several
1337      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1338    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1339      note that biharmonic viscosity + no-slip was not tested in any experiment.
1340    o fix bug in non-linear free-surf side-drag ; generate new output for
1341      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1342    o make mnc honor the writeBinaryPrec flag for most kinds of output
1343    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1344    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1345      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1346    o add brackets in multi-terms sum to get same truncation, independent of
1347      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1348      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1349    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1350      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1351      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1352      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1353      Suggested values of viscosity parameters found in mom_calc_visc.
1354      Many new viscosity diagnostics available.
1355    
1356    checkpoint57s_post
1357    o Add clearing-house for viscosity calculations, mom_calc_visc and
1358      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1359      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1360      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1361      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1362      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1363      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1364      ViscAhStrain and viscAhTension are now retired.
1365    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1366    o In response to JMC's bug report, genmake2 now ignores any soft-links
1367      that it finds in the *current* directory when searching for files.
1368      Soft-links found in any other source directories will still work as
1369      they did before.
1370    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1371      a C routine to unlimit the stack size
1372    o mnc-ify pkg/aim snapshot vars
1373    o mnc-ify pkg/land as requested by Daniel
1374    o various changes to mnc including:
1375      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1376      - output can now be grouped so that all files within a group
1377          change the ITER portion of their names in lock-step together
1378      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1379          and works with both EXCH1 and EXCH2 (but needs more testing)
1380      - writing works for all verification test cases w/ g77 on Linux
1381    
1382    checkpoint57r_post
1383    o make MNC variable initialization happen earlier
1384    o add diagnostics for (almost) each term of the momentum Eq.
1385    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1386    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1387    o remove MINIMAL_TAVE_OUTPUT option ;
1388      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1389    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1390      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1391    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1392    o add time-dependent SST, SSS control
1393    o cost terms in ecco/ modularized (new cost_generic.F)
1394    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1395    o new infrastructure for seaice model vs. obs misfits in seaice/
1396      * driver from the_main_loop.F is seaice_cost_driver.F
1397      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1398      * gradient check in Exp. 6a of natl_box_adjoint/
1399    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1400      (see README file)
1401    
1402    checkpoint57q_post
1403    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1404    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1405      - bug was reported by Jean-Michel and Ian Fenty
1406    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1407      update exp. cpl_aim+ocn output.
1408    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1409      Needed for high-res. runs with large global files
1410      to be able to limit tapelev size
1411    o Changed some tests for adjoint:
1412      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1413      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1414      * global_ocean.90x40x15/ back to default 3-level checkpointing
1415    o Modifications to enable scripted COMMON to MODULE conversion
1416      * verification/OpenAD/code/ has necessary scripts and description;
1417      * converts, compiles and runs successfully;
1418    
1419    checkpoint57p_post
1420    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1421    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1422      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1423    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1424    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1425      (was already the case for dissipation with mom_vecinv,
1426       and also the case for grad.PhiHyd when staggered-timeStep)
1427      This will allow to put dissipation out-off the AB time-stepping.
1428     Unfortunately, affects truncation error. Update output of exp. that "fails"
1429      (cg2d matching number) and leave the others for later: front_relax(10),
1430      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1431      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1432    
1433    checkpoint57o_post
1434    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1435      (2) its ready to be documented during the 20050801 DocFest
1436    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1437      for ideal_2D_oce and lab_sea on linux_ia32_g77
1438    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1439      in global1x1_tot/code_seaice_adj to access indices 32, 33
1440      (worth another tag)
1441    
1442    checkpoint57n_post
1443    o adding precip control xx_precip 32
1444    o adding swflux control xx_swflux 33
1445    o Replacing 10 forcing penalty cost routines by 1 generic.
1446    o Implementing partitioning in time-mean and variable adjustment
1447      for atmos. state.
1448    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1449    o in natl_box_adjoint:
1450      * updated exp 1 to 10
1451        (but does not have time-mean vs. variable split results yet)
1452    o updated global1x1/*_seaice_adj/
1453      to incorporate latest changes
1454    o enable useSingleCpuIO for mdsio vector routines
1455      (applies in particular to tapelev I/O)
1456    o removed inefficient K-loop in all active_file*control*.F
1457    
1458    checkpoint57m_post
1459    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1460      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1461    o pkg/exch2: filling of face-corner halo regions is optional
1462      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1463    
1464    checkpoint57l_post
1465     tag before updating tutorials (pre-release-2)
1466    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1467       for output and interpolation of input fields onto model grid)
1468    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1469       Affects results of exp. rotating_tank ; update output.txt.
1470    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1471          and taking the square quantity and/or using a fraction-weight field.
1472    o fix aim_diagnostics_init.F mate numbers.
1473    o add mnc output capability to diagnostics/diagstat and update
1474      our cvsignore files for the ACSII output generated
1475    
1476    checkpoint57k_post
1477    o lab_sea now uses diagnostics package and provides a suite of
1478      new EXF diagnostics output.
1479    
1480    checkpoint57j_post
1481    o exf
1482      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1483        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1484        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1485      * extended diagnostics output
1486        - now includes all EXF variables
1487        - hs, hl moved to common block
1488        - separate S/R for diagnostics, called after ctrl vector is added
1489        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1490        - EXFqnet contains true Qnet (i.e. includes qsw)
1491      * updated verif. lab_sea, global_with_exf
1492      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1493        to ensure that diagnostics sees a true EXFqnet
1494    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1495    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1496      several times with different frequencies.
1497    o mnc-ify the thsice package as requested by Daniel Enderton
1498      - the monitor--MNC output needs work
1499      - many attributes need to be added (most are currently blank)
1500    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1501      - many attributes need to be added (most are currently blank)
1502    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1503    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1504    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1505      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1506         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1507    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1508     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1509    
1510    checkpoint57i_post
1511    o Diagnostics package was changed: diagnostic allocation is now deactivated
1512      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1513    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1514      add 1rst Order upwind vertical Shear.
1515    o add a quick fix for A/B checkpointing in OFFLINE mode
1516    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1517      end-run around the C/Fortran linking horror in eesup/src/timers.F
1518    o added pkg/runclock: allows user to terminate run based on wall clock
1519    o added non-hydrostatic scaling parameter: nh_am2
1520    o pkg/my82: futile attempt to make results compiler-independent by adding
1521      some "_d 0", etc. no effect.
1522    o for mnc output, fill the 'T' coordinate var with myTime and create a
1523      separate 'iter' variable for iteration count
1524    o pkg/diagnostics:
1525      add new capability: output of Global/Regional & per-level statistics ;
1526      tested against monitor output (including land & thSIce) on various exp.
1527    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1528    
1529    checkpoint57h_done
1530      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1531      data.diagnostics, data.gchem, data.ptracers) is done.
1532    
1533    o pkg/diagnostics: prepare for Global/Regional statistics.
1534      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1535    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1536      and rename it: DIFFERENT_MULTIPLE
1537    
1538    checkpoint57h_post
1539    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1540    o pkg/diagnostics: change output frequency, now in seconds (instead
1541      of Nb of iterations). This requires to change data.diagnostics.
1542    checkpoint57h_pre
1543    
1544    o in mnc, let the user create the output dir if both mnc_outdir_date
1545      and mnc_outdir_num are false
1546    o add fflags() to pkg/diagnostics which allows one to specify, on a
1547      per-file basis, the file precision [default behavior is unchanged]
1548    o added diagnostics to pkg/kpp, including computation of mixed layer
1549      depth based on a temperature/density criterion
1550    o updated verification/natl_box to test the new pkg/kpp diagnostics
1551    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1552    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1553    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1554      not mnc -- this mistake was found by JMC and is now corrected
1555    
1556    checkpoint57g_post
1557    o add Adams-Bashforth 3rd Order time stepping:
1558      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1559      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1560    checkpoint57g_pre
1561    
1562    o make lambda[Theta,Salt]ClimRelax spatially varying
1563      (default remains spatially uniform constant based on tau)
1564    o added new control variables
1565      * init. uVel, vVel, etanN
1566      * lambda[Theta,Salt]ClimRelax
1567    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1568      (suggested by G. Forget)
1569    
1570    checkpoint57f_post
1571    o add parameter "baseTime" = model base time = time at iteration zero
1572      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1573      account for baseTime shift
1574    o move Coriolis arrays from PARAMS.h to GRID.h
1575    checkpoint57f_pre
1576    
1577    o mnc-ifying the seaice package
1578    o introduced an alternative length scale calculation for use in the limiting
1579      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1580    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1581    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1582      as well as grad(vort3).  Made it compatible with both approximate form
1583      for the cubed sphere and full form of these gradients.  Added flag
1584      useFullLeith to select between approximate and full form.  
1585    o add "d0" in getcon.F to reduce differences between compilers/platforms
1586      update output.txt of exp. fizhi-gridalt-hs
1587    o change port_rand funtion to allow to set the seed.
1588    o fix obscure MNC bug involving conversion between reals and integers
1589      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1590        new version is now more standards-compliant
1591    o adjoint-related modifications
1592      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1593      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1594      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1595    
1596    checkpoint57e_post
1597    o Adding eddy stress controls a la Ferreira et al.
1598    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1599    
1600    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1601      update output.txt of exp. fizhi-gridalt-hs
1602    o add more "Z" dimensions and associated coordinate vars to MNC
1603    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1604    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1605      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1606      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1607      months and years.  Requires pkg/cal.
1608    o diagnostics: add pickup functionality
1609      - off by default for backwards compatibility
1610      - current version only uses MDSIO -- MNC will be added
1611    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1612    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1613    
1614    checkpoint57d_post
1615    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1616    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1617      output from the diagnostics package
1618    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1619    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1620      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1621    o add coordinate variables to the MNC output from the diagnostics package
1622    o change MNC-flags default value: true when useMNC=TRUE
1623    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1624      the ability (off by default) to read the grid information using MNC
1625    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1626    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1627    o do snap-shot diagnostics at the middle of the time-interval (instead of
1628      at the end).
1629    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1630      new test for AIM with thSIce + slab-ocean
1631    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1632    o move state variable diagnostics to the beginning of the time step ;
1633      (note: still needs some work specially for snap-shot diagnostics)
1634      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1635    
1636    checkpoint57c_post
1637    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1638    o generate new output.txt files on faulks with g77 & the new -ieee option
1639    checkpoint57c_pre
1640    
1641    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1642      update output.txt of exp. global_ocean.90x40x15
1643    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1644      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1645    o add saltFlux(+File) forcing capability with periodicExternalForcing
1646    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1647    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1648    o improvements for the MNC output from DIAGNOSTICS:
1649      - correct handling of the unlimitied dimension
1650      - all dims now have associated coordinate variables
1651      - variables located at U, V, and Corner ("Z") points are now written
1652        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1653        *all* data points are output
1654    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1655    o added pkg/seaice/seaice_monitor.F
1656    o mdsio_readfield.F can now read files visible only to master MPI process.
1657    o pkg/seaice: some test code for ice-modified ocean stress
1658    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1659      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1660      spurious negative numbers for precipitation and humidity.  Will cause
1661      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1662    o pkg/ctrl/
1663      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1664        May be enabled via doPackDiag
1665      *  introduce z-scaling of
1666         + gradient (doZscalePack) and
1667         + control (doZscaleUnpack)
1668    o pkg/mdsio/
1669      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1670      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1671    
1672    checkpoint57b_post
1673    o simplify options in diagnostics_fill arguments (remove weird combinations)
1674    o fix MNC coordinate variables so that they now contain per-face index
1675      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1676      general, EXCH2 grids are only aligned to a "local" coordinate system
1677    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1678    o Implement instantaneous output within pkg diagnostics:
1679      setting a negative frequency in data.diagnostics produces
1680     "snap-shot" output (as opposed to time-average if freq > 0)
1681    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1682      NOTE: change ptracer diagnostics name: use 2 characters to work with
1683            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1684    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1685      becomes the coordinate variable for the 'T' dimension
1686    o add CF-style coordinate variables to MNC
1687      - just a first cut:  numbers are meaningless on the cubesphere and
1688        missing along the T axis but otherwise it works!
1689    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1690    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1691    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1692      this is based directly on what the model compute, so that the content of
1693      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1694    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1695    o clean up build options files for SunOS, in particular
1696      - remove -traditional from xmakedepend
1697      - change -xarch=v9 to -xarch=native for f77
1698      - restore use of make (not gmake)
1699      - add CC=gcc if using g77
1700    o changes per discussion of AM, JMC, & EH3 today:
1701      - move redundant "grid" variables out of "state" -- in preparation of
1702        creating proper CF-style coordinate variables and in recognition
1703        that any/all grid variables can be easily copied (eg. w/NCO) from
1704        the grid files into any of the other NetCDF files
1705      - *always* output grid variables with MDSIO (this will eventually be
1706        changed)
1707      - output MNC grid file if useMNC is true
1708    o every instance of _END_MASTER() has been found and replaced with
1709      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1710      preprocessors
1711    o re-arrange diagnostics pkg initialisation:
1712     - allow each package to extend the available diagnostics list
1713     - add some checking and fix small problems (multi-threaded, ...)
1714     - new S/R diagnostics_fill (replace fill_diagnostics):
1715       look through the short list of active diag. (instead of the long list)
1716       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1717    
1718    checkpoint57a_post
1719    o this set of changes restores TAMC compatibility
1720      tested for global_ocean.90x40x15 adjoint on trough
1721      (what a pain)
1722    
1723    checkpoint57a_pre
1724    o some modifs in tools/build_options for sunos
1725    o call ctrl_pack for ctrl at end for optimcycle=0
1726    
1727    checkpoint57
1728    o add horizontal bi-harmonic viscosity for vertical velocity
1729      - new parameter viscA4W (defaults to viscA4)
1730      - affects only non-hydrostatic code
1731      - to be done: no-slip lateral boundary conditions
1732    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1733    o implement Implicit Vertical advection for pTracers
1734    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1735      (implemented also for implicit vertical diffusion & advection)
1736    o OBCS: extend application of tracer open boundary conditions
1737      to a strip beyond the boundary of width Olx/Oly
1738    o add call monitor to TAF set of required calls (flow directives)
1739      and include in natl_box_adjoint
1740    o untangle a few ifdefs related to cost, ctrl, autodiff
1741      untangel a few ALLOW_ECCO_OPTIMIZATION
1742    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1743      (theta2, salt2 in ecco_cost_weights)
1744    
1745    checkpoint56c_post
1746    o OBCS as control variables
1747      - update ctrl_ad_diff.list, obcs_ad_diff.list
1748      - remove balance of obcs controls from default
1749      - fix index bug nobcs in ctrl_init
1750      - fix dummy fields filen in ctrl_pack
1751      - add dummy weights for obcs
1752    o lsopt: comment out fort.94 output
1753    o optim:
1754      - remove unnecessary header files
1755      - adjusted namelists
1756      - add xerbla.F to Makefile
1757    o exf:
1758      - multiple modifications of exf_check_range
1759      - unit change in exf_init_runoff from [m/year] to [m/s]
1760    o mdsio:
1761      - i/o-vector change debugLevel from debLevA to debLevB
1762    
1763    checkpoint56b_post
1764    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1765      is called from DO_THE_MODEL_IO
1766      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1767      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1768      - clean up PTRACERS_WRITE_TIMEAVE a little
1769    o add another verification experiment that tests both the cfc-pkg and
1770      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1771      reactive tendencies treated inline with regular timestepping
1772    o testreport previously did a lousy job of comparing small numbers, so
1773      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1774      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1775      testreport.
1776    o ptracers_monitor: bug fix for MPI
1777    
1778    checkpoint56a_post
1779    o GCHEM: finish reorganizating the package
1780      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1781        (introduces another 3D-array for each passive tracer, but only if
1782        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1783        gchemTendency is not needed because the timestep is done separately)
1784      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1785      - GCHEM is now---more or less cleanly---separate from PTRACERS
1786      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1787        so clear to me how that should be done in a general way.
1788    o CFC: improve formatting of output in CFC_ATMOS
1789    o PTRACERS:
1790      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1791        that ALL experiments with ptracers enable can be checked. This makes
1792        GCHEM_MONITOR obsolete.
1793      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1794        monitorFreq
1795      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1796    o add PTRACERS (PTR0[1-5]) to testreport output
1797    o exf_check_range:
1798      * default changed to .TRUE.
1799      * will check values for niter0 if debLevA, every timestep if debLevB
1800      * STOP in exf_check_range if 'out of range'
1801      * range chosen generous to allow for potential extema
1802      TBD: a version with stricter range
1803           permitted range would be runtime parameters
1804    o GMredi:
1805      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1806      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1807      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1808    o GCHEM:
1809      - move call to GCHEM_FORCING_SEP, so that it is now called before
1810        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1811      - introduced a useGCHEM runtime flag and applied it everywhere.
1812      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1813        this flag is now only visible within GCHEM-pkg routines.
1814      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1815        be replaced by a 3D array that is computed before thermodynamics; for
1816        this, the tracer ID iTracer had to be included into the parameter list
1817        of ptracers_forcing
1818      - set up forward_step to call gchem_forcing, that will replace
1819        gchem_forcing_int in ptracers_forcing
1820      - cleaning up
1821    o small cleaning of exch2: remove files that are also in eesupp/src
1822    
1823    checkpoint56
1824    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1825    o mnc: cleanup "full" files--fixes out-of-memory problem
1826    o ECCO-GODAE
1827      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1828      * fully merged and updated from SIO code
1829        windstress sign change affects
1830        - exf_inscal_[u/v]stress
1831        - sign of xx_tau[u/v] adjustments
1832        - signs in cost_scat
1833      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1834      * natl_box_adjoint updated and compressed
1835      * 2-level checkpoint switch added
1836        (tested in EXP. 1 of natl_box_adjoint)
1837      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1838    o SVD
1839      * first complete, non-hacked version for SVD calculations
1840      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1841        performed via direct access files admtlm_vector.it????
1842        (via ctrl_[un]pack)
1843      * optimcycle is used for ARPACK iteration counter
1844        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1845      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1846        and add linear transforms where necessary
1847      * controls are initial/final SST, SSS (can be extended; need to check
1848        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1849    o mdsio: filename info to both stderr, stdout
1850    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1851      from sign change
1852    
1853    checkpoint55j_post
1854    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1855      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1856    o add consistent build directories and .cvsignore files to verification
1857    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1858    o make all subroutines 30 or less characters in length for certain older
1859      compilers to work (a thorough search only turns up two routines in
1860      pkg/ptracers)
1861    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1862      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1863    
1864    checkpoint55i_post
1865    o change arrays for total vertical diffusivity (2.D if explicit,
1866      3.D if implicit) ; each ptracer uses its own background value.
1867    o added mnc/NetCDF output capability to ocn_compon_interf
1868      - added bits to verification/cpl_aim+ocn so that it can run on
1869        ITRDA and other clusters without the mpirun "-wd" option
1870    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1871      configuration
1872    o give MNC the ability to create additional files rather than
1873      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1874      - the default is just less than 2GB which is a practical limit
1875        on many systems
1876    o Compute the non-local term using either KPP vertical diffusivity (=default)
1877       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1878    
1879    checkpoint55h_post
1880    o add verification test "vermix"
1881    o remove all the *_ioinc flags and replace with the single global
1882      outputTypesInclusive flag
1883    o allow to set a vertical profile of vertical diffusivity for T & S
1884    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1885    o useMNC moved from data.mnc to data.pkg
1886    
1887    checkpoint55g_post
1888    o Renaming carbon AD experiments to comply with testreport conventions
1889    o Updating adjoint of Held-Suarez hs94.1x64x5
1890    o Fixing directives for non-ECCO forward_step, after ECCO directives
1891      have been fixed to avoid recomp. of do_oceanic_phys
1892      Works well for global_ocean.90x40x15,
1893      but recomp. issue remains for carbon
1894    o Updating adjoint output for natl_box_adjoint after
1895      pkg/ecco has been modified (see taga c55d_post)
1896    
1897    checkpoint55f_post
1898    o rename to timeave_init_fixed
1899    
1900    checkpoint55e_post
1901    o some delicate re-shuffle of store directives to avoid one
1902      extra call of do_oceanic_physics
1903      affects ecco_the_main_loop.F, do_oceanic_physics.F
1904      checkpoint_lev1_directives.h
1905    o NB: this may break global_ocean adjoint temporarily,
1906      but it is clear how to fix it. Will do later, need this now.
1907    
1908    checkpoint55d_post
1909    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1910    o ecco_cost_weights is modified to 1x1 runs
1911    o modifs to allow observations to be read in as
1912      single file or yearly files
1913    o enable to read exf forcing fields as either
1914      single file or yearly files (flag useExfYearlyFields)
1915    checkpoint55d_pre
1916    
1917    o switch between 2-level and 3-level checkpointing
1918    o add ability of MNC to write local and "partial" (eg. 2D slices where
1919      the full 3D field is never actually stored) arrays to NetCDF files
1920      with the correct (that is, the complete multi-dimensional) set of
1921      array indicies
1922      - used in mom_vecinv() to write the diagFreq output
1923      - tested (demonstrated) in verification/aim.5l_cs
1924    o further mnc-ification
1925      - add verification/lab_sea to the list with mnc setups
1926      - fix undefined mnc v-names in cd_code
1927      - add kpp to mnc output (both snapshot and timeave)
1928    o non-hydrostatic code
1929      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1930        in calc_gw.F
1931      - defaults to viscAh
1932      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1933        friction or Leith) in non-hydrostatic mode, as long as there is
1934        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1935    o pkg/cost
1936      extend simple cost functions to treat time mean quantities
1937      (T,U,V) via cost_accumulate_state from cost_tile
1938    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1939        be 2 times larger than the minimum size the advection scheme requires.
1940        now get a perfect conservation of salt in advect_cs test-exp (updated)
1941    o GGL90 (Gaspar's TKE mixed layer)
1942      - add horizontal diffusion of TKE, requires exchanges in
1943        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1944        default. In OPA there is no horizontal diffusion of TKE but the
1945        mixing coefficients are computed from a horizontal average of TKE of
1946        6 points or so. I think that diffusion has a little more physical
1947        justification.
1948      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1949        was in vain)
1950      - mask tke-variable in ggl90_init
1951    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1952    o fix biharmonic diffusion on CS-grid.
1953    o more obcs stuff
1954      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1955        for reading boundary values. This routine is called from
1956        obcs_prescribe_read
1957      - updated obcs_check
1958      - changed sponge layer relaxation parameter units for days to seconds
1959      - turned off sponge layer by default
1960      - changed argument list of OBCS_CALC to myTime+deltaTclock
1961      - fixed about 35 bugs in obcs_external_fields_load
1962    
1963    checkpoint55c_post
1964    o obcs stuff
1965      - new runtime flags useOBCSprescribe, useOBCSbalance
1966      - re-arranged obcs_calc
1967      - moved exf_getobcs to obcs_prescibe_read
1968        obcs_prescibe_read is called after ORLANSKI stuff
1969        and independent of it (executable can contain all).
1970      - updated obcs_check
1971      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1972        These may be necessary only if tangential velocities are
1973        prescribed at OB, not sure, needs testing.
1974    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1975      which simplifies the calls and passes the ifc check-bounds test
1976    
1977    checkpoint55b_post
1978    o add a 2D scalar, Z location, exchange_2 routine.
1979    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1980      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1981      affects advect_cs results (for the wrong reason): update output.txt
1982    o use a more standard discretization for biharmonic viscosity ;
1983     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1984      affects results of dome set-up: update output.txt
1985    o fix gad_advection.F (CubedSphere part), back to version 1.23
1986    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1987    
1988    checkpoint55a_post
1989    o merged code to
1990      * prescribe/read time-dependent open boundaries
1991        (works in conjunction with exf, cal)
1992      * sponge layer code for open boundaries
1993      * each boundary N/S/E/W now has its own CPP option
1994        (healthy for the adjoint)
1995    
1996    checkpoint55
1997    o up-to-date adjoint of previous breaks
1998      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1999      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2000      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2001      - carbon: * remove tr1-related adjoint verification
2002                * add ptracer as control variable
2003    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2004      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2005    
2006    checkpoint54f_post
2007    o in verification/carbin/ remove experiment related to
2008      ALLOW_PASSIVE_TRACER (array tr1 etc)
2009      code_ad/ input_ad/ results_ad
2010    
2011    o add two new packages
2012      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2013        + subject to optimization (memory)
2014      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2015        + subject to reordering (many GOTOs in the original code)
2016        + so far opps is called for every (i,j) point, and then operates in
2017          the vertical; one may want to reorder the scheme in order operate in
2018          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2019          fields)
2020    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2021      - all verification tests compile and run with linux_ia32_g77
2022      - defaults are compatible with current input files--nothing
2023        should change if you were not previously using MNC
2024      - MNC output has been added in numerous places (eg. timeave)
2025        but there are still a few writes not yet do-able with MNC
2026        (this is in progress)
2027      - flags now allow for either/or/both use of MDSIO and MNC and
2028        documentation will soon follow
2029      - numerous small formatting cleanups for ProTeX
2030    o add version info (via BUILD_INFO.h) to MNC and stdout
2031    
2032    checkpoint54e_post
2033    o add two new packages
2034      - pp81 (Packanowski and Philander, 1981), Richardson number and
2035        stratification dependent mixing
2036      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2037      - these scheme operate in a similar manner as KPP (without ghat, of
2038        course), however there is only one diffusivity that is used for both
2039        temperature and salinity (and passive tracers)ç
2040    o add offline package
2041    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2042      provided by Stephanie Dutkiewicz
2043    o genmake2: add ability to search for C compilers and cleanup test output
2044      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2045    
2046    checkpoint54d_post
2047    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2048    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2049      leading to additional shift by 5 days each year of integration
2050       (i.e. leading to considerable offset over the years)
2051    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2052    o start with no AB and no initial filtering (staggerTimeStep):
2053      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2054    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2055      (external loading & cpl import/export stay in forward_step.F)
2056    o update coupling interface to work with new staggerTimeStep
2057    o change MDSIO ptracers_pickup.
2058    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2059    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2060    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2061    
2062    checkpoint54c_post
2063    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2064      this affects (truncation error) output.txt of test-exp:
2065       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2066    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2067    o change Qnet to always be the net heat flux, (+upward).
2068      affects (truncation error) output of natl_box exp.: updated
2069    o define the max number of passive tracers in PTRACERS_SIZE.h
2070    o start to test mnc routinely in exp0
2071    o add sea-ice loading (sIceLoad) as a new forcing field.
2072    
2073    checkpoint54b_post
2074    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2075       impressive on Altix and Opteron systems)
2076    o diagnostics can now write NetCDF files through the mnc package
2077    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2078    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2079    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2080      affects (truncation error) output of lab_sea & natl_box exp.: updated
2081    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2082    
2083    checkpoint54a_post
2084    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2085    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2086    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2087    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2088      + internal_wave (shift in writing cg2d_ini_res)
2089    checkpoint54a_pre
2090    
2091    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2092      - modified verification/lab_sea and natl_box_adjoint accordingly
2093    
2094    checkpoint54
2095    checkpoint53g_post
2096    o prepare splitting of thermodynamics: store convect.counter in common block
2097    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2098      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2099    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2100    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2101    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2102    o restore adjointability
2103    
2104    checkpoint53f_post
2105    o modifications that affect AIM experiment results (update output.txt):
2106      - no advection of S at top interface Nr (pkg/generic_advdiff)
2107      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2108    o AIM pkg:
2109      - include stability function into surf.Flux derivative relative to Tsurf
2110      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2111    
2112    checkpoint53e_post
2113    o merged cylindrical coord configuration
2114    o added rotating_tank experiment
2115    checkpoint53e_pre
2116    
2117    checkpoint53d_post
2118    o faulks upgraded: re-generate output.txt that have changed:
2119       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2120    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2121    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2122    o added Sadourny discretization of Coriolis
2123      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2124      - re-enabled use of omega3 (useAbsVorticity)
2125    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2126      vector-invariant equations
2127      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2128    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2129      hopefully without new bugs
2130      - still to do: biharmonic friction for non-hydrostatic w
2131    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2132    o regenerated output for global_ocean_ebm (using -ieee)
2133    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2134      of mom_common/
2135      - simple re-arrangement of instructions within computing loop
2136    checkpoint53d_pre
2137    
2138    checkpoint53c_post
2139    o new version of coupler for AIM+thSIce and Ocean models
2140     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2141     - land: change Evaporation of snow
2142     - aim with thSIce: fix bug in snow-precip.
2143    o changes to calc_gw.F
2144     - bug fix for w^2 term near the bottom boundary
2145     - (hopefully) improve the lateral slip boundary condtions for use with
2146        partial/looped cells
2147      - because the bug fix changes two verification experiments anyway (exp5
2148        and plume on slope), change the lateral boundary condition from half slip
2149        to the value of no_slip_sides
2150    o ebm package wasnt quite up to the parallel task. Fixed that.
2151    o Adjoint of EBM package + verification
2152      * TLM OK
2153      * ADM not sufficient accuracy yet (needs further testing)
2154    
2155    checkpoint53b_post
2156    o Commiting new energy balance model to repository
2157      * package is pkg/ebm
2158      * verif. is verification/global_ocean_ebm
2159      * references are in ebm_driver.F
2160    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2161    C        Global thermohaline circulation. Part I:
2162    C        Sensitivity to atmospheric moisture transport.
2163    C        J. Climate 12(1), 71-82
2164    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2165    C        Global thermohaline circulation. Part II:
2166    C        Sensitivity with interactive transport.
2167    C        J. Climate 12(1), 83-91
2168    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2169    C        Destabilization of the thermohaline circulation
2170    C        by atmospheric eddy transports.
2171    C        J. Climate 7(12), 1870-1882
2172    o Will need long integration testing.
2173    checkpoint53b_pre
2174    
2175    o created pkg/mom_common in preparation for variable viscosity code
2176    o renamed and split ini_mnc_io
2177    o pkg/land: only liquid water can diffuse or run-off
2178    o AIM using land: soil wetness availability account for snow
2179    o added printMapIncludesZeros to EEPARMS namelist
2180    
2181    checkpoint53a_post
2182    o restore TAMC compatiility for exf_constants.h
2183      (no usage of _d in .h)
2184    o Additional storing in KPP in an attempt to fix
2185      TAMC problem with adjoint of KPP code.
2186      (no success...)
2187      Identical code works fine with TAF.
2188    o Fixed verification/natl_box_adjoint experiments.
2189      Initial conditions for Experiments 4 and 5 are now
2190      set to "SEAICE_initialHEFF=0", which is more reasonable,
2191      and hence gives results closer to that of Experiment 2.
2192      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2193    
2194    checkpoint53
2195    o stable checkpoint with up to date adjoint
2196      TLM tests only run for 1st grdchk at the moment. Its unclear if
2197      this is a code problem or a problem with resetting code for g_
2198      variables that is being autogenerated wrong.
2199      Otherwise:
2200       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2201       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2202         are both still in chaos following their security messes.
2203    
2204    checkpoint52n_post
2205    o various build (mostly genmake2) changes including:
2206      - ability to build/run more easily within Cygwin and MacOS X
2207      - more complicated Makefiles with a stronger dependence on Gnu Make
2208    o pkg/seaice modifications
2209      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2210        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2211        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2212      - changed proxy for geostrophic velocity and updated
2213        verification/lab_sea/results/* accordingly
2214      - removed ADI dynamic solver from pkg/seaice
2215      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2216        they caused a segmentation fault under certain circumstances
2217      - removed unused field WATR
2218    o bug fix in exf-package:
2219      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2220         now reflect that.
2221    o small fixes in the cal-package:
2222      - set reference date to first of January for the 'model'-calendar
2223      - failing of cal_CheckDate in cal_FullDate now actually results in a
2224        warning
2225    o small modifications in exf-package to increase flexibility:
2226      - change climtempfreeze from a constant to a runtime parameter that
2227        is specified in data.exf_clim (default = -1.9)
2228      - introduce runtime parameter windstressmax (default = 2.0) that is
2229        specified in data.exf
2230    o fix in pkg/thsice:
2231      - update Evap (Tsf changes) to be consistent with Latent heat flux
2232      - maintain snow precipitation unchanged (even if Tsf >=0).
2233     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2234    
2235    checkpoint52m_post
2236    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2237      this does not change any of the results, because myIter=0 in swfrac always
2238      lead to jwtype=2 (the default anyway), but the call makes little sense
2239      as a default
2240    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2241    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2242      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2243    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2244    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2245    o extending useSingleCpuIO option to work with new exch2 I/O format
2246      - old-style, missing-tile I/O is still accessible by defining CPP
2247        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2248    o monitor package can write to NetCDF files and/or STDOUT
2249    o fix re-definition bug in MNC_GRID_INIT_ALL()
2250    o doc/api_reference added
2251      - a framework for building an API Reference Manual using all
2252        the "protex" comments embedded in the code
2253      - see pkg/generic_advdiff, pkg/mnc for examples
2254    o MNC:
2255      - make myThid the last argument for all subroutines
2256      - new default for the grid files: NO halos
2257      - add useMNC and other run-time flags
2258      - separate per-file-group handling of the unlimited dimension
2259      - early initialization of MNC w/ flags read at the eeboot stage
2260        and lookup tables set in initialize_fixed
2261      - write all MNC output to a freshly-created directory
2262    o thermodynamics sea-ice (thsice) is now tested with testreport.
2263    o test exp. advect_cs: use the standard cs32 grid ; update output.
2264    o Added functionality to grdchk:
2265      pick global i,j,k position (or nearest wet) where to perform check.
2266    
2267    checkpoint52l_post
2268    o new land formulation:
2269      a) use ground enthalpy as prognostic variable to ensure exact
2270         energy conservation.
2271      b) account for water temperature and for latent heat of freezing
2272         in all processes (rain, run-off, ground storage)
2273      c) compute surface and ground temperature implicitly.
2274    o aim_v23 modification for new land model:
2275      a) Treat separately land / ocean / sea-ice surface fluxes
2276         to allow implicit computation of land & sea-ice surface temp.
2277      b) add snow precipitation.
2278    checkpoint52l_pre
2279    
2280    o fix problem (when 1 tile is empty) in min/max monitor.
2281    o fix bug in timeAve (u,vZetatave in common block)
2282    o no restoring terms under ice for pkg/seaice
2283    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2284    o bug fix for pkg/seaice pickups
2285    o change MNC call locations and add coordinate attributes
2286    o mask vorticity at the corner ; affects global_ocean.cs output
2287    o fix ini_curvilinear_grid ; test CS experiments with mpi
2288    o aim.5l_cs: modify sea-ice fraction input file ; update output
2289    o exf: Adding simple range check routine for exf fields after read
2290    
2291    checkpoint52k_post
2292    o removed top-level directory "diags"
2293      - we migrated these functions to pkg/timeave a long time ago
2294    o fixed bug introduced in pkg/monitor
2295    o accuracy ctrlprec = 32 insuffient for gradient checks using
2296      averaged fields (I/O via cost_averages)
2297      -> use ctrl.h in active_file*.F to control I/O precision.
2298    o paramter list of CALL ADTHE_MAIN_LOOP
2299    o added initial do_the_model_io to ecco
2300    o set all ...Freq to zero after cost_final
2301      taveFreq, dumpFreq, pChkptFreq
2302    o MAIN and ECCO differentiability restored
2303    
2304    checkpoint52j_post
2305    o fix nchklev in tamc.h for global_ocean...
2306    o Bringing flow and store directives up-to-date
2307    o Really weird thing!
2308      call do_the_model_io from the_main_loop with parameters
2309      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2310      TAF places a faulty re-call of initialise_varia
2311      after cost_final call which should not be there!
2312    checkpoint52j_pre
2313    
2314    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2315      error messages
2316    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2317    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2318      debug output
2319    o modfied mdsio_writefield.F to handle non-global files under exch2
2320    o update AIM Cubed-Sphere exp (aim.5l_cs):
2321      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2322    o update AIM Equatorial Channel exp:
2323      use standard aim_v23 pkg and change the SST fields to be more realistic.
2324    o globalFile now works with exch2
2325    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2326      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2327    o limit timeave output for hi-res integrations
2328    
2329    checkpoint52i_post
2330    o removed CPP_EEOPTIONS.h from verification/*/code
2331    o updated the tiling for global_ocean_pressure
2332    checkpoint52i_pre
2333    
2334    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2335      the old pkg/aim).
2336    
2337    checkpoint52h_pre
2338    o shortened offending lines in exch2_send_rx?.template
2339    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2340    o genmake2: add build & execute test for NetCDF code
2341    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2342      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2343    o added useSingleCPUIO flag to monitor.F and mon_out.F
2344    o added temporary hack for sea-ice dynamics on the cube:
2345      metric terms are ignored and it is assumed that
2346      there is no sea-ice on cube faces 1, 2, 4, and 5.
2347    
2348    checkpoint52f_post
2349    o added exch2 cube routines to pkg/exch2
2350    o modified hs94.cs-32x32x5 to use it
2351    o added new grid files to hs94.cs-32x32x5
2352    checkpoint52f_pre
2353    
2354    checkpoint52e_post
2355    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2356      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2357    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2358      to work with implicit vertical advection and AB ;
2359    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2360    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2361     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2362    checkpoint52e_pre
2363    
2364    o fix bug in impldiff when Nr=1 or Nr=2.
2365    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2366    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2367    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2368      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2369    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2370    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2371    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2372    
2373    checkpoint52d_post
2374    o re-tiled many expts to allow comparison in multi-processor mode
2375      - updated output accordingly
2376      - changed hs94.128x64x5 to use intial T from file rather than use the
2377        random number generator
2378    o add infrastructure in model routines for fizhi and gridalt packages
2379    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2380    o changes to permit hi-res, cubed-sphere, configuration
2381      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2382      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2383      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2384        of surface winds for the cube
2385      (A verification experiment, based on global_ocean.cs32x15, but with
2386       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2387       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2388       complete with example surface forcing files and matlab scripts to look
2389       at the output and compare it with that of global_ocean.cs32x15.)
2390    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2391       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2392       to conform to the common rule.
2393    o check-in the first version of the coupler + interfaces for multi-components
2394       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2395       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2396       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2397       - ocean and atmos. share the same horizontal grid (no interpolation).
2398       - exchanges between component and coupler is done in forward_step
2399    o new verification experiment, cpl_aim+ocn:
2400       coupled ocean - AIM atmosphere on cs32 grid.
2401    
2402    checkpoint52d_pre
2403    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2404    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2405    
2406    checkpoint52c_post
2407    o Fixing OPTIONS files for use of exf:
2408      - ALLOW_ECCO not needed
2409      - ECCO_CPPOPTIONS.h should not be included from
2410        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2411        as has been the case in the past
2412      - All cal/exf related options are currently set in
2413        single header file. Should remain so until we
2414        agree on a consistent new policy.
2415    o Removed all CPP options for cal package.
2416      cal has no more CPP options.
2417    o modified STOREs in GAD_ADVECTION
2418    o corrected key comp. for passkey
2419    
2420    checkpoint52b_post
2421    o new version: "thsice" of thermodynamic sea-ice pkg:
2422     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2423     - modify fluxes but do not change theta directly;
2424     - light cleaning of bulk_force pkg (still needed with thsice).
2425     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2426       + output_thsice.txt to test thsice & bulk_force pkgs.
2427    o put back grid & coriolis monitor output.
2428    checkpoint52b_pre
2429    
2430    o call "do_the_model_io" at the beginning (=> dump initial state)
2431    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2432    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2433      (need info on NUMBER_OF_PTRACERS)
2434    o missing PTRACERS headers in some routines
2435    o default tamc.h in pkg/autodiff supposed to crash
2436      to ensure proper customization
2437    
2438    checkpoint52a_post
2439    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2440      - moved surfaceTendencyTice from pkg/seaice to main code
2441      - subroutine FREEZE_SURFACE now limits only surface temperature
2442        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2443        => new output.txt for global_ocean.cs32x15 & global_with_exf
2444      - keep the old version of FREEZE for backward compatibility;
2445        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2446      - corresponding modifs for TAF directives
2447    o added surface flux output variables to TIMEAVE_STATVARS
2448    o time-averaged output for pkg/ptracers
2449    o fix problem with ECCO-related divided adjoint
2450      snapshot file was missing some ad-variables,
2451      but no warning issued by TAF
2452    
2453    checkpoint52a_pre
2454    o some bug fixes for #undef REAL4_IS_SLOW
2455    
2456    checkpoint52 = ecco_c52_e35
2457    o after testing adjoints of checkpoint51u_post
2458    
2459    checkpoint51u_post
2460    o this is the post-merge tag of the ecco-branch
2461      (needs another clean checkout and re-testing)
2462    o various natl_box_adjoint configs and results
2463      but no input fields
2464    o obcs adjoint not yet merged!
2465    o adding ECCO global 1x1 and 2x2 degree configs
2466    o updated/extended some store directives for seaice
2467    o pkg/ecco now containes ecco-specific part of cost function
2468    o top level routines the_main_loop, forward_step
2469      supersede those in model/src/
2470      previous input data.cost now in data.ecco
2471      (new namelist ecco_cost_nml)
2472    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2473    
2474    checkpoint51t_post
2475    o this is the pre-merge tag of the ecco-branch
2476    
2477    checkpoint51s_post
2478    o cleanup: removed various obsolete #define-s
2479    o pkg/grdchk
2480      - renamed 'ph-grd 3' to 'grad-res'
2481      - merged from ecco-branch
2482        (remaining bug fixes for obcs gradient checks)
2483      - additional high-precision output for testreport
2484        (grep for 'precision_grdchk_result')
2485    
2486    checkpoint51r_post
2487    o cleaned up or removed CPP_OPTIONS.h files
2488    o updated results for some of the tests to reflect the new
2489      optfiles (-ieee: -O0 instead of -O3)
2490    
2491    checkpoint51q_post
2492    o cd_code:
2493      - moved cd_scheme.F -> cd_code_scheme.F
2494      - separate read_checkpoint from cd_code_ini_vars.F
2495      - separated cd_code part from write_checkpoint
2496      - updated AD_SOURCE, generated .flow
2497      - added CD_CODE_VARS.h to the_main_loop
2498      - Moving cd_code specific store dir.s to pkg/cd_code
2499    o ctrl package totally restructured
2500      - pack/unpack now optional and decoupled from
2501        xx_/adxx_ I/O
2502      - ctrl_pack/unpack cleaned
2503        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2504      - confined inclusion of AD_CONFIG.h to where necessary.
2505    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2506    
2507    checkpoint51p_post
2508    o create initial cd_code package
2509      - WARNING: the initialization of fields within packages
2510        is broken because INI_FIELDS (where READ_CHECKPOINT is
2511        called) is called *before* PACKAGES_INIT_VARIABLES.
2512        This seems to be backwards since
2513        1) its important to initially zero the entire field including
2514           the "halo" region
2515        2) zeroing needs to be done *before* reading pickup info
2516           and the pickup call might or might not happen in any
2517           particular run
2518      - this needs an overhaul for R2
2519    o cleanup verification/*/code/GMREDI_OPTIONS.h
2520    o cleanup testreport
2521    
2522    checkpoint51o_post
2523    o bringing AD-related verif's up to date with genmake2
2524      - carbon/
2525      - global_ocean.90x40x15/
2526      - hs.94.1x64x5/
2527      - (front_relax/ )
2528    o (more) consistent directory structure for AD-related verif.'s
2529    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2530    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2531    o bug fix in find_alpha.F for MDJWF:
2532      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2533        change rho -> rho-rhoConst
2534      - replace call find_rho to find_rhonum
2535    o initialisation of rFlx extended to full array (required by TAF)
2536      and shifted to thermodynamics
2537    o removed PTRACERS.h in ptracers routine
2538    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2539    o Correcting initialisations for fVerU, fVerV.
2540    o helping TAF to recognize dependency on kUp for
2541      fVerU, fVerV
2542    o Replacing delZ by delR in pkg/ctrl/
2543    checkpoint51o_pre
2544    
2545    o undid all of cp51 pending some cleanups and discussion
2546    o added the [#include "AD_CONFIG.h"] statement to all files that need
2547       it for adjoint/tl #defines
2548     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2549     o removed tools/genmake since it no longer works
2550    
2551    checkpoint51n_post
2552    o modifications to make FREEZE flux visible to pkg/kpp
2553      - moved surfaceTendencyTice from pkg/seaice to main code
2554      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2555      - subroutine FREEZE now limits only surface temperature
2556        (this means new output.txt for global_ocean.90x40x15,
2557         global_ocean.cs32x15, and global_with_exf)
2558    o added surface flux output variables to TIMEAVE_STATVARS
2559    
2560    checkpoint51n_pre
2561    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2562    o added [#include "AD_CONFIG.h"] to all files that use the following
2563      defines:
2564      - ALLOW_ADJOINT_RUN
2565      - ALLOW_TANGENTLINEAR_RUN
2566      - ALLOW_ECCO_OPTIMIZATION
2567    
2568    checkpoint51m_post
2569    o incorporating changes to get TAMC/TAF working in genmake2
2570      - added new TAMC/TAF targets to the Makefile
2571      - various cleanups related to package handling
2572      - these changes should have no impact on the forward model
2573    
2574    checkpoint51l_post
2575    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2576     - faster algorithm for cal_addtime.F
2577     - higher precision arithmetic, where needed
2578     - pkg/exf *startdate variables changed from calendar date to
2579       model integration time
2580    
2581    checkpoint51l_pre
2582    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2583    o enable to apply restoring on S & T only in a latitude band.
2584    o update output (external_forcing_surf modif. change truncation errors)
2585       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2586    
2587    checkpoint51k_post
2588    o change default to: useNHMTerms=.FALSE.
2589     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2590       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2591     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2592        exp1, ideal_2D_oce
2593     - change data file of oceanic exp (leave the results unchanged for now)
2594       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2595    o set gravitySign automatically according to the vertical coordinate used
2596      (and change sign: back to "logical" value: +1 when R increases downward)
2597    o added an include barrier to the default CPP_OPTIONS.h and
2598      removed the #include "PACKAGES_CONFIG.h" from it
2599    o fix a bug in mom_fluxform (from chk51j_post)
2600    
2601    checkpoint51j_post
2602    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2603    o adjusted some flow directives (dynamics, thermodynamics)
2604    o added cubed-sphere case to test cost function
2605    o heckpoint_lev?_directives.h now include
2606      pkg-specific directives, whenever those are enabled.
2607    o Moving pkg-specific flow directives to corresponding pkg
2608      Moving pkg-specific differentiation list to corresponding pkg
2609      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2610      ---> conventions are
2611           - pkg_ad.flow
2612           - pkg_ad_diff.list
2613           - pkg_ad_check_lev?_dir.h
2614    
2615    checkpoint51i_post
2616    o merge of the branch-genmake2
2617      - knowingly breaks the older genmake
2618      - automatic generation of all ALLOW_${PKG_NAME} defines
2619      - new testreport supersedes older testscript
2620    o large number of package inclusion and header cleanups
2621    checkpoint51i_pre
2622    
2623    o new output for adjoin of global ocean vector invariant
2624    o fix for checkpoint of thermodynamic seaice and bulk_force
2625    o Steph gchem various cleanups
2626    
2627    checkpoint 51h_pre
2628    o fixed some single quotes
2629    o modify gchem pkg to be more versatile
2630    o modifications to clean up dic pkg
2631    o add pkg/cfc
2632    
2633    checkpoint51g_post
2634    o provide links for ARPACK and ADM*TLM
2635    o start removing verification/vero/
2636    o update AD-related stuff
2637      (in particular some IF-statements in model/src/ routines)
2638    o adding to verification/global_ocean.90x40x15/ adjoint of
2639      vector invariant setup
2640    
2641    checkpoint51f_post
2642    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2643    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2644      of tracer Green's fucntions for ocean inversion project.
2645    
2646    checkpoint51f_pre
2647    o Added on-the-fly spatial interpolation capability
2648        "USE_EXF_INTERPOLATION" to pkg/exf.
2649      - This is a temporary Cartesian-grid hack until
2650        the super-duper ESMF coupler becomes available.
2651      - See verification/global_with_exf/README for usage example.
2652      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2653        flags and modified pkg/seaice accordingly.
2654    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2655        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2656        non-local transport term.
2657    
2658    checkpoint51e_post
2659    o pkg/mom_vecinv:
2660      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2661      - add time-ave diagnostic of vorticity advection.
2662    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2663    o atmospheric geopotential: - include water vapor effect;
2664                                - use p^kappa in p* scaling.
2665    o land pkg: read initial state from files.
2666    o AIM : add stratospheric drag in the upper level
2667    
2668    checkpoint51d_post
2669    o change function ILNBLNK (=> last non-blank char.) to return zero
2670      (instead of the string length) when the string. char is empty
2671    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2672    o modif's to restore TAMC compatibility
2673      - avoid "_d" constructs in PARAMETER declarations
2674      - avoid interrupting lines by comment lines
2675    o Use cluster local disks for purely local I/O
2676      vs. globally visible disks needed for ctrl stuff
2677      (merged from ecco-branch)
2678      - new active_file_loc... and mdsio_..._loc routines
2679      - affected packages: autodiff, ctrl, grdchk, mdsio
2680    
2681    checkpoint51c_post
2682    o introducing integer flag debugLevel
2683      - debLevZero: suppress all output
2684      - debLevA: standard
2685      - debLevB: equivalent to current debugMode=.TRUE.
2686    o introducing pathname variable mdsioLocalDir for mdsio
2687      that can be specified at runtime
2688      (relevant for cluster I/O to local disk)
2689    `
2690    >>>checkpoint51b_post
2691    adjoint of ptracers
2692    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2693    o extended state in checkpoint_lev?, etc.
2694    o alternative ctrl/cost with tr1 or ptracer
2695    o new comlev1_bibj_ptracers
2696    o new ptracers.flow
2697    o made ptracers_forcing same as external_forcing_s
2698    o added verification for adjoint with ptracers
2699      - adm. grdchk fail so far
2700      - tlm. grdchk OK
2701      - checked tapelev/comlev recomputations: OK
2702    <<<checkpoint51b_pre
2703    
2704    checkpoint51a_post
2705    o added code for biogeochemistry package
2706      - new pkgs: dic, gchem
2707      - new subroutine in ptracers
2708    o modify code for biogeo packages
2709      - in model/src and pkg/ptracers
2710    
2711    checkpoint51
2712    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2713      - autodiff, ctrl, exf, grdchk, seaice
2714      kept separate packages
2715      - cost, ecco, obcs
2716    o updating verification/internal_wave, verification/lab_sea
2717      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2718    
2719    checkpoint50i_post
2720    o Preparing next differentiable checkpoint and sync
2721      of MAIN vs. ecco-branch
2722      - 1st step: this one is differentiable
2723      - 2nd step: next(! not this) checkpoint will have updated packages
2724                  from ecco-branch)
2725    
2726    checkpoint50h_post
2727    o new package "land": provide surface BC for AIM.
2728    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2729    o AIM: use true log-P extrapolation for near surface temp (= as in
2730        F.Molteni paper) ; update aim.5l_cs output.
2731    o New variable in PARM03 for more flexible pickups
2732    o somewhat cleaned package initialisation sequence for
2733      ctrl/ cost/ ecco/ in packages_... routines
2734    
2735    checkpoint50g_post
2736    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2737      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2738      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2739        made the default because of faster convergence than ADI
2740    
2741    checkpoint50f_post
2742    o exf totally restructured
2743      - replaced all exf_set_ routines by one generic exf_set_gen.F
2744        and made sure it's still differentiable
2745      - split exf_getffields.F into new exf_bulkformulae.F
2746      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2747      - updated adjoint/makefile and relevant verif. accordingly
2748    
2749    checkpoint50f_pre
2750     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2751          + change Evap over land. (update aim.5l_cs output)
2752     o added missing .cvsignores and made uniform across expts
2753     o changed configuration of tidal_basin_2d expt
2754     o added pkg/debug functions for tracing code in fatal crashes
2755     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2756     o new fn in pkg/monitor to stop model if solution grows too big
2757     o removed lots of single quotes from comments
2758    
2759    checkpoint50e_post
2760    o make KPP work with PTRACERS
2761     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2762       nearly a copy of kpp_transport_s
2763     - there is no analogue to SurfaceTendencyS, so I have to use
2764       gPtr(of the surface layer) instead
2765    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2766    checkpoint50e_pre
2767    
2768    checkpoint50d_post
2769    o change kpp output from multiple-record state files to single-record state
2770      files analogous to write_state.F
2771    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2772      analogous to the cg2d-related output.
2773    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2774      so that writing to internal file fn (with length 512) fails.
2775    checkpoint50d_pre
2776    
2777    checkpoint50c_post
2778    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2779    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2780    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2781    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2782    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2783    
2784    checkpoint50c_pre
2785    Merging from release1_p13:
2786    o bug fix for pkg/seaice dynamic solver
2787    o Added SEAICE_initialHEFF to pkg/seaice
2788    
2789    checkpoint50b_post
2790    o store u*,v* in gU,V instead of in guNm1,gvNm1
2791    o in order to put the momForcing out of the Adams-Bashforth:
2792      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2793      to timestep.F
2794    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2795    o re-generate output for highly sensitive test-exp:
2796       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2797    
2798    checkpoint50b_pre
2799    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2800    o corrected CPP option mismatch in exf_Bulk... functions for case
2801      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2802    
2803    checkpoint50a_post
2804    o Bug fix for merging between c50 and KPP.
2805      ikey was passed from thermodynamics to kpp_calc via
2806      common block rather than being recomputed in kpp_calc,
2807      in contradiction with new key itdkey.
2808      New key ikppkey created, and tamc.h headers updated.
2809    
2810    checkpoint50
2811    - 2nd step of merge with ecco-branch:
2812      merge changes in ecco-branch back into main trunk
2813    - bug fix in find_alpha
2814    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2815    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2816    - merged some sliced AD support routines
2817    
2818    checkpoint49
2819    merged from ecco-branch:
2820    o exf:
2821      - Enable initialisation of forcing fields to constant
2822        (runtime) values.
2823      - in exf_getffields.F
2824        Reduce i-/j-loop to interior domain, discarding overlaps.
2825        That also fixes wrong TAF-key computations for key_1, key_2
2826        with bulf formulae.
2827      - exf_init.F modify #ifdef for exf_init_evap
2828      - exf_getffieldrec.F, ctrl_getrec.F
2829        The following INT-usages are not safe:
2830          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2831          fldcount = int(fldsecs/fldperiod) + 1
2832        and were modified.
2833    o autodiff: checkpoint_lev...
2834      - updated storing for bulk formulae (some arrays were missing)
2835      - added state for seaice package
2836      - synchronized with main branch
2837    o DIVA:
2838      Modif.s in
2839      - the_main_loop.F
2840      - the_model_main.F
2841      and added cost_final_restore.F cost_final_store.F
2842      o With these changes, it is possible to fully separate
2843        the first forward run to compute the cost function (mdthe_main_loop)
2844        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2845        into separate model executions.
2846        This enables better tuning of DIVA to given queue sizes.
2847      o Loss of cost function value in consecutive DIVA runs is
2848        fixed by storing to 'costfinal' file.
2849      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2850        beginning/end of adjoint integration is accounted for.
2851      The current changes apply to TAF-1.4.26.
2852      TAF has one remaining bug, requiring one manual change
2853      (see MITgcm manual).
2854    o cal: synchronized between MAIN and ecco-branch
2855    
2856    checkpoint48i_post
2857    o Changes to restore differentiability of code w.r.t. previous tag
2858      (mostly adding new routines to make list and replacing
2859      pressure by totPhiHyd).
2860    o Updated and merged grdchk package
2861      - has both ADM and TLM checks
2862      - works for single- and multi-proc.
2863      - output cleaned
2864      - worked successfully for parallel DIVA
2865    o genmake:
2866      - Adding -platform=SP4
2867      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2868    o Modif. for DIVA:
2869      ctrl_unpack should not be called in intermediate DIVA interval.
2870      (similar thing would apply for active files such as
2871      tbar, sbar, psbar, which should not be reinitialised;
2872      only relevant for ecco-branch)
2873    
2874    checkpoint48h_post
2875    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2876    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2877    o Added SEAICE_initialHEFF to pkg/seaice
2878    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2879    
2880    checkpoint48g_post
2881    --- EOS:
2882    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2883      store total Potential in totPhyHyd for diagnostics & EOS.
2884    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2885    --- Pressure/geopotential gradient:
2886    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2887    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2888      ( changes results of global_ocean_pressure )
2889    o NLFS + z-coord.: add eta*Rho' contribution.
2890    o accurate phiHyd when using interface-W at the middle between 2 centers
2891     ( changes results of ideal_2D_oce )
2892    o includes r* 2nd term in potential gradient.
2893    
2894    checkpoint48f_post
2895    Merging from release1_p12:
2896    o Modifications for using pkg/exf with pkg/seaice
2897      - improved description of the various forcing configurations
2898      - added basic radiation bulk formulae to pkg/exf
2899      - units/sign fix for evap computation in exf_getffields.F
2900      - updated verification/global_with_exf/results/output.txt
2901    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2902      (SBO) core products, including oceanic mass, center-of-mass,
2903      angular, and bottom pressure (see pkg/sbo/README.sbo).
2904    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2905      to avoid negative values in shallow regions.
2906      - updated verification/natl_box/results/output.txt
2907      - updated verification/lab_sea/results/output.txt
2908    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2909    o Added useSingleCpuIO option (see PARAMS.h).
2910    o Updated useSingleCpuIO option in mdsio_writefield.F to
2911      work with multi-field files, e.g., for single-file pickup.
2912    o pkg/seaice:
2913      - bug fix in growth.F: QNET for no shortwave case
2914      - added HeffFile for specifying initial sea-ice thickness
2915      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2916    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2917      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2918    o pkg/seaice:
2919      - adjoint-friendly modifications
2920      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2921    
2922    checkpoint48e_post
2923    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2924    o dynamics: change definition of computational domain & adapt mom_fluxform
2925      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2926    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2927        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2928        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2929        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2930        inverted_barometer solid-body.cs-32x32x1
2931      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2932    
2933    checkpoint48d_post
2934    o in preparation for r*:
2935     a) use pre-computed gradient of hydrostatic potential:
2936        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2937     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2938        => affects results of glob_oce_pressure (different truncation error)  
2939      update output.txt of ideal_2D_oce & global_ocean_pressure
2940    
2941    checkpoint48d_pre
2942    o in preparation for r*:
2943      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2944      pass the 2 comp. of the grad. as arguments to momentum S/R.
2945      but for the moment, only used if it does not change the results.
2946    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2947    
2948    checkpoint48c_post
2949    Modifications in treatment of initial flux forcing controls
2950    to avoid extra storing of flux fields.
2951    
2952    checkpoint48c_pre
2953    o Added tidal_basin_2d experiment (currently 1D!)
2954    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2955    
2956    checkpoint48b_post
2957    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2958     (modification to pressure gradient not yet implemented)
2959    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2960      (for U & V) that are used for vertical advection of momentum.
2961    
2962    checkpoint48a_post
2963    o In preparation for r*, use temp. array to compute vertical transport
2964       in flux-form momentum pkg. => change results of few test-exp.
2965      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2966                        lab_sea, natl_box & plume_on_slope
2967    
2968    checkpoint48
2969    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2970    
2971    checkpoint47j_post
2972    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2973    o moved adexch from forward_step to addummy_in_stepping
2974    o added exch in ctrl_map_...
2975    o aveFreq.=0. at end of cost_final to avoid overwrite in
2976      reverse checkpointing loop
2977    o Yet more changes in gmredi:
2978      * adgmredi_calc_tensor
2979        avoiding all recomputation of gmredi_slope_limit
2980      * adgmredi_x/y/rtransport
2981        added flag for excessive storing to avoid recomp. of
2982        u/v/rtans, dTdx/y/z
2983        -> this is not really necessary and very memory-consuming
2984      * adgmredi_slope_psi:
2985        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2986      * gmredi_slope_limit
2987        re-activated full calculation of taperfct for case 'ac02'
2988    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2989    
2990    checkpoint47i_post
2991    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2992    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2993      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2994    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2995    o gmredi: fix few bugs.
2996    
2997    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2998    This will be a good checkpoint to plug into the ecco-branch.
2999    o few modif.'s to get latest version adjointed
3000      (mainly kick out code in ini_linear_phisurf)
3001    o modif's to run adjoint with exactConserv
3002    o case GM_BOLUS_ADVEC should be cleaned
3003      S/R gmredi_slope_psi should be cleaned
3004    o verification/carbon now has exactConserv=.TRUE.
3005    
3006    checkpoint47g_post
3007    o time-average AIM output: becomes independent from statvars time-average
3008      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3009    o After TAF bug fix:
3010      Tested adjoint of gmredi package.
3011      Tests were done with checkpoint47 rather than with latest
3012      checkpoint47f_post since the latter is broken for the adjoint
3013      verification/carbon/ contains both ADM and TLM gradient checks.
3014    Here they are, before they get changed/lost/stolen.
3015    Mostly modif.'s to fix numerical sensitivities.
3016    Gradient checks OK for
3017    - GM_taper_scheme:
3018      * clipping
3019      * ac02
3020      * linear
3021      * glw91
3022      * dm95
3023      * ldd97
3024    - GMREDI_OPTIONS:
3025      * GM_VISBECK_VARIABLE_K
3026      * GM_NON_UNITY_DIAGONAL
3027      * GM_EXTRA_DIAGONAL
3028      * GM_BOLUS_ADVEC
3029    in conjunction with data.gmredi parameters to be checked in
3030    in a few minutes under verification/carbon/code/
3031    
3032    checkpoint47f_post
3033    Merging from release1_p10:
3034    o modifications for using pkg/exf with pkg/seaice
3035      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3036        and SEAICE_EXTERNAL_FLUXES
3037      - pkg/exf CPP options EXF_READ_EVAP and
3038        EXF_NO_BULK_COMPUTATIONS
3039      - usage examples are Experiments 8 and 9 in
3040        verification/lab_sea/README
3041      - verification/lab_sea default experiment now uses
3042        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3043    
3044    checkpoint47e_post
3045    o created a tag prior to creating a branch
3046    
3047    checkpoint47d_post
3048    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3049      at the bottom boundary had an erroneous half slip boundary condition
3050    o added bottom drag and no slip boundary condition capabilities to
3051      oceanic pressure coordinates code
3052    o added new verification experiment global_ocean_pressure, this experiment is
3053      also described in the tutorial section of the manual
3054    checkpoint47d_pre
3055    
3056    checkpoint47c_post
3057    o Added a verification experiment for a global cubed-sphere ocean run
3058      -  verification/global_ocean.cubed32x32x30
3059      -  uses pkg/therm_seaice and pkg/bulk_forcing
3060    
3061    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3062    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3063      when using P-coordinate; only implemented for atmospheric config.
3064    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3065      NOTES: requires option NONLIN_FRSURF to be "#define".
3066    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3067    
3068    checkpoint47b_post
3069    Merging from release1_p9:
3070    o pkg/seaice
3071      - removed GOTO's and added taf directives
3072      - double precision constants to reduce the g77 (Linux)
3073        to F77 (SGI) differences reported in release1_p8
3074    o tools/genmake
3075      - added SGI options
3076    o verification/testscript
3077      - updated to that of checkpoint47a_post
3078    o verification/global_ocean.90x40x15/input/eedata
3079      - modified for SGI f77 compatibility
3080    o verification/lab_sea
3081      - added description of sea-ice model
3082      - added missing matlab routines
3083      - added test of thermodynamics parallelization
3084    
3085    checkpoint47a_post
3086    o new pkg: aim_v23
3087     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3088       for now, keep the same surface forcing as before.
3089     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3090     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3091     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3092    o add diagnostic of surface correction term in monitor output
3093    
3094    o bulk_force and therm_seaice
3095    - Two packages:  bulk_force (Bulk forcing)
3096      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3097    - Earlier integration from Stephaine Dutkiewicz
3098      and Patrick Heimbach.
3099    - Two ifdef statements for compile time,
3100       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3101    
3102    checkpoint47
3103    differentiable version of checkpoint46n_post
3104    o bug fix in quasihydrostaticterms
3105    o * "clean" adjoint code (in terms of extensive recomputations)
3106        can now be obtained for all GMREDI options (i.e. for
3107        - GM_VISBECK_VARIABLE_K
3108        - GM_NON_UNITY_DIAGONAL
3109        - GM_EXTRA_DIAGONAL
3110        - GM_BOLUS_ADVEC )
3111      * However, wrong gradient check problem remains unsolved.
3112      * New CPP options have been introduced for different
3113        tapering schemes
3114    o external_fields_load now part of differentiation list
3115    o pressure needs multiple storing;
3116      would be nice to have store_pressure at beginning or
3117      end of forward_step, e.g. by having phiHyd global (5-dim.)
3118      (NB: pressure is needed for certain cases in find_rho,
3119      which is also invoked through convective_adjustment).
3120    o recomputations in find_rho for cases
3121     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3122    o #define ATMOSPHERIC_LOADING should be differentiable
3123    o ini_forcing shifted to begining of initialise_varia
3124    o Incorporating QNVS line search routines into MITgcm
3125      (this is separate code, and therefore not under pkg)
3126      lsopt/, optim/
3127    o Updated verification/carbon/
3128      - #define GM_VISBECK_VARIABLE_K
3129      - GM_taper_scheme    = 'ldd97'    
3130    
3131    checkpoint46n_post
3132    Merging from release1_p8:
3133    o verification/natl_box:
3134      updating new external_fields_load routine
3135    o New package: pkg/seaice
3136      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3137      The sea-ice code is based on Hibler (1979-1980).
3138      Two sea-ice dynamic solvers, ADI and LSR, are included.
3139      In addition to computing prognostic sea-ice variables and diagnosing
3140      the forcing/external data fields that drive the ocean model,
3141      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3142      The implied surface heat flux is then stored in variable
3143      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3144      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3145      non-local transport term.  Because this call precedes model
3146      thermodynamics, temperature under sea-ice may not be "exactly" at
3147      the freezing point by the time theta is dumped or time-averaged.
3148      N.B.: fairly large differences in accuracy occur across
3149            different platforms/compilers; comparison between
3150            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3151            generated output gives:
3152       T           S           U           V
3153      C D M    c        m  s        m  s        m  s        m  s
3154      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3155      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3156      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3157    
3158      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3159    o GAD:
3160      - generated new common blocks to account for call of
3161        same gad routines with differing traceridentities
3162        (needed to modify tracerIdentity indices in GAD.h)
3163      - generated separate common blocks for case useCubedSphereExchange
3164        (Department of Futurology)
3165      - parameter lists to gmredi_?transport: added tracerIdentity
3166      - added new key indices to tamc.h
3167    o external_fields_load:
3168      - added this routine to TAF list
3169      - needed to make some common blocks global and additional storing
3170        along the same lines as exf package (checkpoint_lev?_directives.h)
3171    o exf:
3172      updated external forcing package
3173      - bug fixes carried over from ecco-branch
3174        (missing OBCS_OPTIONS.h in two routines)
3175      - enable easy to use "no forcing".
3176      - added exf I/O for atmospheric loading
3177      - added exf I/O for runoff data
3178      - transfered scaling between exf <-> MITgcm to exf namelist
3179    o Adding new verification experiment global_with_exf.
3180      This verification experiment is almost identical to the
3181      global_ocean.90x40x15 experiment, except that it uses
3182      the exf (and cal) package instead of the
3183      external_fields_load routine (cf README file).
3184    
3185    checkpoint46m_post
3186    o modified testscript to return -- when there are no lines of "%MON" output
3187    o added new flag "quasiHydrostatic" for QH mode
3188      and new routine quasihydrostaticterms()
3189    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3190      New routine: mom_u_coriolis_nh()
3191    o fixed sign of non-hydrostatic metric terms in u and v equations.
3192      Depend on correct sign of gravitySign.
3193    o added work.pc* to .cvsignore in aim directories using ifc
3194    o introduced flag for controllin non-hydrostatic metric terms
3195    o removed gravitySign from PARM04
3196    o switched to g77/ifc from pgf77 in aim experiments
3197    
3198    checkpoint46l_post
3199    o made convective adjustment work with pressure coordinates:
3200     - changed the direction of k-loop in convective_adjustment.F for the
3201       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3202     - adjusted the reference pressure k-index in convective_adjustment.F
3203     - adjusted the convection condition in convect.F (in analogy to
3204       calc_ivdc.F)
3205     - convective_adjustment no longer computes anything on the halos
3206     - removed the warnings about negative salinity from find_rho.F and
3207       find_alpha.F; instead the new routine look_for_neg_salinity, called
3208       at the beginning of find_rho, find_alpha, and find_beta, does a
3209       check of the entire slice, if CPP-option
3210       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3211    checkpoint46l_pre
3212    
3213    checkpoint46k_post
3214    o fixed the verification/global_ocean.90x40x15 experiment:
3215     - new bathymetry (the world according to A., JMC, and M.)
3216     - new initial fields and forcing fields (*.bin files)
3217     - new POLY3.COEFFS (for the next release one should switch to a full
3218       equation of state: JMD95P or MDJWF)
3219     - fixed several errors and redundancies in the data file
3220     - experiment uses looped cells
3221     - added matlab directory with diagnostic scripts for plotting of output
3222    
3223    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3224     - read AIM physics parameters from a file (data.aimphys)
3225     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3226    
3227    checkpoint46j_post
3228    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3229    o move wVel computation at the end of the time step, in S/R integr_continuity
3230    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3231    o update timeave pkg for wVel diagnostic.
3232    checkpoint46j_pre
3233    
3234    checkpoint46i_post
3235    o Clean up AIM package (and keep the results unchanged):
3236      include CPP_OPTION and use IMPLICT NONE in all routines ;
3237      declare all the variables _RL ; use _d 0 for all numerical constants.
3238      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3239    
3240    checkpoint46h_post
3241    o cleaned up the use of rhoNil and rhoConst.
3242      - rhoNil should only appear in the LINEAR equation of state, everywhere
3243        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3244        and the dynamical equations are all divided by rhoConst
3245    o introduced new parameter rhoConstFresh, a reference density of fresh
3246      water, to remove the fresh water flux's dependence on rhoNil. The default
3247      value is 999.8 kg/m^3
3248    o cleanup up external_forcing.F and external_forcing_surf.F
3249      - can now be used by both OCEANIC and OCEANICP
3250    checkpoint46h_pre
3251    
3252     Added code to convert surface volume flux (fresh water) into
3253     a mass flux when using P coordinates in the ocean (OCEANICP).
3254     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3255    
3256    checkpoint46g_post
3257    o Include a new diagnostic variable phiHydLow for the ocean model
3258      - in z-coordinates, it is the bottom pressure anomaly
3259      - in p-coordinates, it is the sea surface elevation
3260      - in both cases, these variable have global drift, reflecting the mass
3261        drift in z-coordinates and the volume drift in p-coordinates
3262      - included time averaging for phiHydLow, be aware of the drift!
3263    o depth-dependent computation of Bo_surf for pressure coordinates
3264      in the ocean (buoyancyRelation='OCEANICP')
3265      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3266        Theta, Salinity, and Pressure in the parameter list. This routine is
3267        presently contained in find_rho.F. This routine does not give the
3268        correct density for 'POLY3', which would be a z-dependent reference
3269        density.
3270    o cleaned up find_rho
3271      - removed obsolete 'eqn' from the parameter list.
3272    o added two new verification experiments: gop and goz
3273      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3274    checkpoint46g_pre
3275    
3276    checkpoint46f_post
3277    o Enable tangent linear (forward mode) gradient checks:
3278      - extended active file handling to g_... files
3279      - added TANGENT_SIMULATION to theSimulationMode
3280      - extended grdchk package accordingly
3281    o added tangent linear setup in verification/carbon/code_ftl
3282    o added adjoint setup in verification/front_relax/code_ad
3283    
3284    checkpoint46e_post
3285    o Added new equation of state -> MDJWF
3286      - EOS of McDougall et al., 2002, JAOT, submitted
3287      - caveat: the equation of state is only valid for a smaller (more
3288        realistic?) range of values than JMD95P/Z and UNESCO
3289      - added masks to the calculation of pressure in store_pressure
3290      - added more check values for density in check_eos (ini_eos.F), some of
3291        the old check values are out of the range of the MDJWF-eos, so don't
3292        expect perfect matches for those
3293    checkpoint46e_pre
3294    
3295    checkpoint46d_post
3296    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3297      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3298      case of pressure coordinates. eosType='JMD95Z' in
3299      combination with buoyancyRelation='OCEANICP' now causes an error.
3300    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3301      in find_alpha/beta.
3302    checkpoint46d_pre
3303    
3304    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3305      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3306    
3307    checkpoint46c_post
3308    o Changes necessary for ocean in p-coordinates
3309     -  Added new buoyancy relation = 'OCEANICP'
3310     -  Added new parameters = gravitySign (this used to be contained inside
3311        the factor dRdZ which I added when we first switched to R coordinates).
3312     X GM/Redi is not compatible (yet)
3313     X bottom drag and no-slip need to be debugged.
3314    checkpoint46c_pre
3315    
3316    checkpoint46b_post
3317    o Added new equation of state -> JMD95Z and JMD95P
3318      - EOS of Jackett and McDougall, 1995, JAOT
3319      - moved all EOS parameters into EOS.h
3320      - new routines ini_eos.F, store_pressure.F
3321    o Added UNESCO EOS, but not recommended because it requires
3322      in-situ temperature (see JMD95)
3323    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3324      unesco.f to be used with POLY3
3325    checkpoint46b_pre
3326    
3327    checkpoint46a_post
3328    o Added (atmospheric) pressure loading
3329      - new field in FFIELDS.h, etc...
3330      - new cpp flag ATMOSPHERIC_LOADING
3331    o Changed hFacC to _hFacC in calc_phi_hyd.F
3332    o Added SHORTWAVE_HEATING to some files for consistency
3333    checkpoint46a_pre
3334    
3335    checkpoint46
3336    further merges from release1_p5
3337    o new ctrl package
3338      - adopted from ECCO environment to enable optimization
3339      - added Eliassen Palm fluxes to controls
3340    o added Eliassen Palm flux controls to gradient check package
3341    o cost package
3342      - Compatible with new ctrl package
3343      - added Eliassen Palm cost hooks
3344      - modif's of existing cost functions
3345    o Adjoint-related bug fixes in kpp:
3346      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3347      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3348    o autodiff package
3349      - flow directives:
3350        + new for S/R do_the_model_io
3351        + enhanced for S/R checkpoint
3352        + new gmredi.flow
3353      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3354        disable adcommon.h/g_common.h by default.
3355      - fixed problem for adjoint of global_max
3356    o modified verification/carbon/
3357    o New setup for adjoint of global_ocean
3358    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3359    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3360    o incorporated hooks for sponge layer code (external_forcing.F)
3361    
3362    checkpoint45d_post
3363    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3364    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3365      (affects plume_on_slope "cg2d" output)
3366    o add new parameter deltaTfreesurf for free-surface time stepping
3367    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3368    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3369    o change phiMin in exp1 (to agree with documentation)
3370    o add new flags:
3371     - T,S forcing inside/outside Adams-Bashforth
3372     - turn off temp,salt advection and/or forcing
3373     - for each tracer, define internal flag for multiDimAdvection & A-B
3374    o monitor: change definition of KE to check conservation of Energy
3375    
3376    checkpoint45c_post
3377    o Removed f90 comments ("!")
3378    o Modified initialisations to enable exf package for MITgcm
3379      (without invoking ECCO_PACKAGE).
3380    o modifications to gradient check package (Martin Losch)
3381      - enable centered differences
3382      - modified format of standard output
3383    
3384    checkpoint45b_post
3385    o cleaned exchange calls in cg2d
3386    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3387    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3388      to configure barotropic setup (Martin Losch)
3389    o moved some initialisations within bi,bj loop in dynamics
3390      (TAF flow dependency)
3391    o in initialise_varia, moved call packages_init_variables
3392      before convective_adjustment_init
3393      (corresponding adjustment of TAF tape initialisation).
3394    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3395    
3396    checkpoint45a_post
3397    o compute Rho over the whole domain (extend iMin,jMin indices)
3398    o specific exchange for X-slice domain (case Ny=1)
3399    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3400    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3401    
3402    checkpoint44h_post = checkpoint45
3403    o Fix to restore differentiability:
3404      place at which packages_init_variables is called in
3405      initialise_varia is crucial for reverse control flow.
3406    o modifications in GMRedi to enable stable adjoint
3407      (corresponding modif's in thermodynamics, dynamics)
3408    o added missing hook for sponge layer code in external_forcing
3409    o modified test cost functions
3410    o storing in gad_advection (plus removal of write(0,*)!
3411    o missing headers TR1.h added in convective_adjustment routines
3412    o errorMessageUnit set non-equal zero in eeboot
3413      (conflict on some platforms, e.g. IBM SP3)
3414    o modified carbon verif.
3415    
3416    checkpoint44h_pre
3417    o vertical grid option: allow to put the Interface at the middle between
3418      2 cell-centers ; replace delZ in pkg/kpp by drF.
3419    o GM Advective form: Tracers are advected using the residual transport (=
3420      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3421    
3422    checkpoint44g_post
3423    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3424      results) ; ifdef missing in thermodynamics.F
3425    
3426    checkpoint44f_pre,checkpoint44f_post
3427    o added PTRACERS package
3428      This allows an arbitrary number of passive tracers to be integrated
3429      forward simultaneously with the dynamicaly model.
3430      + Implemented so far:
3431        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3432        - I/O and checkpointing
3433        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3434      + Not implemented so far:
3435        - KPP
3436        - OBCS
3437      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3438        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3439        line in data.pkg.
3440      + This package is disabled by default since it increases storage.
3441    
3442    
3443    o testscript: added -cleanup option
3444    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3445                 b) enable to filter 2D fields.
3446    
3447    checkpoint44e_pre,post
3448    o re-wrote convective adjustment to use pre-calculated weights
3449      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3450      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3451      Original calls to convect() still in place.
3452    
3453    chkpt44d_pre,post
3454    o added missing EXCLUDE_MONITOR flags
3455    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3456      (incompatible typ in MIN/MAX expressions caused problems
3457      on IBM SP3)
3458    o in genmake added variable MAKEDEPEND
3459      plus resetting for case SunOS
3460    o added timer_stats.c routine for IBM SP3
3461    o removed variables in dynamics
3462    !!! I forgot to create tag chkpt44d_pre !!!
3463    !!! But chkpt44d_pre = chkpt44c_post    !!!
3464    
3465    o real fresh water flux implemented with non-linear free-surface.
3466    
3467    chkpt44c_pre,post
3468    o few fix (mask in shap_s2, EmPmR in external_field_load,
3469      USE_NATURAL_BCS in solve_for_P);
3470    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3471    
3472    checkpoint44b_pre/_post
3473    o merge of relevant stuff from the ecco-branch:
3474      - genmake: removed $S64 overwrite for case SunOS
3475      - pkg/exf: update and corrections for field swapping and obcs
3476      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3477                  harmonized between ECCO and MITgcm
3478      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3479                      updated checkpointing_lev... lists for obcs
3480      - model/src: minor changes in forward_step, plot_field
3481                   added directive for divided adjoint in the_main_loop
3482      - pkg/mdsio: added mdsio_gl_slice
3483    
3484    o check parameters & config (chkpt44a_pre,post)
3485    o OBC and NonLin_FrSurf.
3486    
3487    checkpoint44
3488    o fix bug in mom_vi_del2uv
3489    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3490    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3491    o update AIM experiments (NCEP input files)
3492    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3493    o added some stuff for AD
3494    
3495    checkpoint43
3496    o added two new advection tests
3497    o added global 4x4 degree ocean test
3498    o added test of H&S94 with free surface on cube
3499    o some final mods for gradient check, adjoint,...
3500    
3501    checkpoint42
3502      Fixed AD-related problems:
3503    o Store directives up-to-date with re-arranged Adams-Bashforth
3504      (mainly thermodynamics.F)
3505    o New store directives for multi-dim. advection schemes
3506      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3507      * new common block and key passkey
3508      (mainly gad_advection.F)
3509    o Modified store directives for split of dynamics/thermodynamics
3510      for the case ALLOW_KPP
3511    o Cleaned argument list for timestep_tracer.F
3512    
3513    checkpoint41
3514    o re-formatted/added comments in prologues of key subroutines
3515      to work with protex
3516    
3517    checkpoint40
3518    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3519    o added FLT (floats) package from Arne along with demo. experiment
3520    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3521      implementation of forward-in-time forcing terms
3522    o more mods for non-linear free-surface including new variable
3523    o modified multi-dim method to work on cube
3524    o bug fix in KPP (from DM)
3525    
3526    checkpoint40pre9
3527    o added DST advection schemes
3528    o fix MPI bug on SGI's
3529    o modifications for non-linear free-surface
3530    o fixed conditionals for fixed flow/passive tracer only mode
3531    o added tension/strain form of stress tensor
3532    o changes to commenting of arguments for TAF/TAMC
3533    o added/updated many matlab scripts
3534    o added multi-dimensional advection method for tracers
3535      
3536    checkpoint40pre8
3537    o new package rw/
3538      Added method for dumping intermediate local arrays:
3539      mdsio_writetile - same as mdsio_writefield except works from inside
3540                        bi,bj loop
3541      mdsio_writelocal - same as mdsio_writetile except works for local
3542                         arrays
3543      write_local_r? - higher-level wrapper for mdsio_writelocal
3544      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3545      Example given at end of mom_vecinv.F that dumps some local arrays.
3546    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3547      control flux-form versus vector invariant code.
3548      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3549      or genmake -DISABLE ...
3550    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3551      (additional storing is now needed for case vecinv;
3552      currently nothing implemented to switch this storing off
3553      in case fluxform is used since no CPP flag available).
3554    
3555    checkpoint40pre7
3556    o bug fix in dynamics.F
3557      calc_viscosity called before k=1,Nr loop.
3558    o added some #ifdef's ALLOW_PASSIVE_TRACER
3559    o cleaned initialisations in ctrl_map_ini
3560      related to TAF
3561    
3562    checkpoint40pre6
3563    o split dynamics into thermodynamics & dynamics
3564    o corresponding split of calc_diffusivity into
3565      calc_diffusivity, calc_viscosity
3566      (kpp_calc_diff, kpp_calc_visc).
3567    o Added diffkr, kapgm to control variables
3568    o bug fix in gmredi_slope_limit for ldd97
3569    
3570    checkpoint40pre5
3571    o proper initialization of Adams-Bashforth time stepping
3572      + uses forward step for very first step of model (iter=0)
3573    o re-generated *all* output since almost all output is modified by this
3574      change (sorry but we've been putting this one off for about 2 years)
3575      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3576        *not* regenerated since they are already out of date and I don't
3577        want to create the impression that they are suddenly working.
3578    o removed KAP stuff for DEC's
3579    o modified/added many .cvsignore files in */code and */input
3580    o added new expt "solid-body.cs-32x32x1"
3581      + this uses an alternative form of ini_curvilinear_grid.F which
3582        is not necessarily any better than the current one...
3583    
3584    checkpoint40pre4
3585    o added re-initialisations of utrans,vtrans,rtrans in
3586      calc_common_factors which are crucial for TAF.
3587    o extended iMin,jMin range for calc_common_factors,
3588      calc_diffusivity
3589    o added option ALLOW_PASSIVE_TRACER
3590    o a few minor updates and fixes
3591    
3592    checkpoint40pre3
3593    o created calc_gtr1.F for gad package
3594    o split the_main_loop and re-introduced forward_step
3595    o some recomputations of nIter0 for TAMC
3596    
3597    checkpoint40pre2
3598    o Updated to latest branch of AJA, JMC
3599    o Added gradient check package
3600    o Added routines for passive tracer handling
3601    o Added carbon sequestration sensitivity experiment
3602    
3603    checkpoint39
3604     o Modifications and fixes to support TAMC
3605       (mainly missing or wrong directives)
3606     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3607       in addummy_in_stepping
3608     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3609     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3610     o Included following packages:
3611       cal: calendar
3612       exf: external forcing
3613       ecco: essential routines to control use of cal, exf
3614             (NB: this is not the full ECCO environment)
3615     o disabled some packages by default in genmake
3616    
3617    checkpoint38
3618     o see notes_c37_adj.txt
3619     o corrected wrong layer index in external_forcing_t
3620     o replaced the_main_loop/forward_step by the_main_loop
3621     o removed forceoutput from write_state
3622       (replaced criteria for initial/final state)
3623     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3624    
3625    checkpoint37
3626     o mdsio.F routine split and packaged in pkg/mdsio
3627       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3628        used unless genmake -disable=mdsio)
3629     o allow a more precise surface-geopotential gradient for the atmosphere
3630       taking into account the change in space of Alpha (=1/rho) at the surface.
3631     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3632       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3633     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3634       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3635       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3636     o Time-Average diagnostics defined as a pseudo package "timeave".
3637     o pickup files : old pickup (before c35) did not work with new code (c35
3638       and after) unless activating 2 commented lines in initialise-varia.
3639     o Non-Hydrostatic pickup file Pb fixed.
3640     o bug with Rigid-lid version (since c35) fixed.  
3641    
3642    checkpoint36
3643     o implement Crank-Nickelson barotropic time-stepping
3644     o recover Time-Average diagnostics
3645     o fix Pb in checkpoint (PR#19)
3646     o AIM become a standard package ; clean unused CPP_kees
3647    
3648    checkpoint35
3649     o subtantial rewrite of dynamics.f
3650     o allows staggered time-stepping
3651     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3652     o added bottom drag (linear + quadratic)
3653    
3654    checkpoint34
3655     o Modified exchange routines for correct reverse simulation.
3656     o Added verification output to comply with bug fix in impldiff.F
3657       as of c33 (exp2, natl_box).
3658     o Corrected store directives in dynamics.F
3659     o Corrected array boundaries in impldiff.F
3660     o Corrected array dimensions in gmredi.
3661       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3662     o Added routine GLOBAL_SUM_INT to global_sum.F
3663     o Added mdsio_gl.F for ECCO purposes.
3664    
3665    checkpoint33
3666     o Fixed bug in lower BC in impldiff.F
3667     o Fixed confusion about units of forcing arrays in FFIELDS.h
3668       namely Fu,Fv,Qnet,Qsw,EmPmR:
3669       - Removed verification/natl_box/code/external_fields_scale.F
3670         (did not differ from that in model/src)
3671       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3672         (see FFIELDS.h for description)
3673       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3674         kpp_calc.F and kpp_transport_t.F
3675       - Removed model/src/external_fields_scale.F and calls to it
3676       - verification/natl_box uses flux data with "atmospheric" sign so
3677         a special version of external_fields_load.F is used to
3678         change the data as it's read in. This way, the arrays
3679         have the right units and signs at all times tha a user could
3680         possibly use them.
3681     o Corrected genmake to delete a temporary file during configuration
3682    
3683    checkpoint32
3684     o Scaling of forcing fields moved from external_forcing.F to
3685       external_fields_scale.F, called directly after loading fields.
3686     o Surface relaxation terms added to surface tendency fields in
3687       extra subroutine.
3688     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3689       fields.
3690     o Changes in GMRedi to comply with packaging structure.
3691     o Modifications and bug fixes in KPP package.
3692     o Verification experiment for KPP added (verification/nat_box/)
3693    
3694    checkpoint31
3695     o Packages interface brought in line with defined standard
3696       -> new routines packages_...F
3697       -> changes in initialise_fixed.F, initialise_varia.F
3698       -> enables initialisation interface for ECCO package
3699     o Rescaling of external forcing fields immediately after read
3700       (removed from external_forcing.F)
3701       -> new: surface_fields_scale.F
3702       -> affects ini_foorcing.F, external_fields_load.F
3703     o Computation of surface tendencies before tendency updates.
3704       -> new: external_forcing_surf.F
3705     o Change of variable names useGMRedi, useKPP, useECCO
3706     o Further changes in dynamics.F, impldiff.F for TAMC
3707     o Tested for experiments 0, 2, 4.
3708       - not yet tested for GMRedi.
3709       - not yet tested for KPP.
3710    
3711    checkpoint30
3712     o Updates for OBCs
3713     o New experiment for test OBCs (internal_wave)
3714     o New output.txt in verification/exp4/results/
3715     o Updates for KPP: calculation of viscosity corrected, new variables
3716       kpp_dumpFreq and kpp_taveFreq
3717     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3718       and entry for T90 in genmake
3719    
3720    checkpoint29
3721     o packaged KPP and GM/Redi
3722    
3723    checkpoint28
3724     o Corrected initialization of hFacMin for difference vertical coordinates
3725     o Modified calculation of partial cell thickness to more robust algorithm
3726     o config_summary.F: replaced write_1D_... by write_0D_...
3727       read_write.F: added subroutines write_0D_...
3728     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3729       included some initialisations required for TAMC.
3730     o routine calc_isoslopes: modified sqrt computation to make it
3731       differentiable for zero argument.
3732     o routines dynamics, impldiff:
3733       included store directives and tape key computations required for TAMC.
3734     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3735    
3736    checkpoint27
3737     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3738       formulation works properly with variable resolution.
3739     o restructured the calling tree between the_model_main() and dynamics()
3740     o split initialise() into initialise_fixed() and initialise_varia()
3741     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3742       in new routine ini_psurf()
3743    
3744    checkpoint26
3745     o moved some #ifdef in optional routines to encompass everything
3746       except the argument declarations. This was using up some memory.
3747     o fixed macros like _ADT to work with both versions of Linux cpp
3748     o cleaned up some unused and uninitialized variables
3749       (helps when debugging with strict compile options)
3750     o split up CPP_EEOPTIONS.h into options and macros
3751       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3752     o patch for 2 processor JAM mode
3753    
3754    checkpoint25
3755     o updates for OBCs and NH
3756     o dramatically reduced memory usage
3757     o added "JAM" routines for use on Artic network
3758     o parameterization of convection by implicit vertical diffusion
3759     o added a diagnostic of convective index
3760     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3761       (this is was partly for OBCs and NH but also in anticipation of
3762        an explicit free-surface option)
3763     o initial state input files for U and V
3764    
3765    checkpoint24
3766     o Removed some spurious "REAL"s
3767     o Updated KPP to latest version from JPL
3768     o Added a COS(latitude) in horizontal viscosity
3769    
3770    checkpoint23
3771     o Added del^4 diffusion for salt and temperature
3772     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3773    
3774    checkpoint22
3775     o Made many small changes: implicit none, format(i5), etc...
3776     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3777    
3778    checkpoint21
3779     o Introduced new I/O package that supports direct-access records (mdsio.F)
3780     o Split-up mid-level I/O routines
3781     o Updated input data for experiments 0,1,2,4 and 5
3782     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3783    
3784    checkpoint20
3785     o Tidied up open-boundaries some more
3786     o Added non-hydrostatic code
3787     o Fixed some input data
3788     o Modified MPI start-up to work in "coupled" context.
3789    
3790    checkpoint19
3791     o Tidied up directory structure for verification experiments.
3792     o Added new code for open boundaries.
3793     o Corrected advective terms near boundaries.
3794     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3795     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3796     o Split default parameters out of ini_parms.F into set_defaults.F.
3797    
3798    checkpoint18
3799     o Further changes for optional code generation with
3800       CPP - ugh!
3801    
3802  checkpoint17  checkpoint17
3803   o Beginning to incorporating modularity   o Beginning to incorporating modularity
3804     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.

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