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revision 1.1 by cnh, Tue May 26 14:38:05 1998 UTC revision 1.967 by jmc, Mon Mar 24 00:33:31 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
8      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
9      also fix diagnostics VISCAHW & VISCA4W.
10    
11    checkpoint59o
12    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
13    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
14      move a few statemens out the main loop into separate loops
15    o pkg/shelfice:
16      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
17        (kg/m^2/s), does not break tests, because in verification/isomip,
18        rhoConstFresh=rhoConst (by accident)
19      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
20      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
21        new file model/src/seawater.F, so that they are available for all pkgs.
22      - convert potential temperature into in-situ temperature. This changes the
23        isomip tests => update tests
24    o add a flag writePickupAtEnd (default=true) to be able to suppress
25      writing a pickup at the last timestep
26    o tools/mpack-1.6 :
27      - disable automake (not working) and autoconf (not needed).
28      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
29        also cleaner with much less compilation warnings.
30    o pkg/profiles:
31      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
32      (for "less than 32 characters name" compiler requirement)
33    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
34      conditions that have a different sampling frequency than S/T/U/V obcs
35    o pkg/diagnostics (stats-diags):
36      - fix global Min/Max in case 1 processor get only empty tiles
37    o genmake2: replace (4 times)
38         make genmake_tc_1.o >> genmake_warnings 2>&1
39      with
40         COMM="$CC $CFLAGS -c genmake_tc_1.c"
41         echo $COMM >> genmake_warnings
42         $COMM >> genmake_warnings 2>&1
43      to make genmake2 always see the value of CC as specified in the optfile.
44    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
45      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
46      - modify verification advect_cs test to test SOM-advection on CS-grid.
47    o pkg/ctrl:
48      - Rewrite of ctrl_map_ini_ecco.F,
49        introducing a generic routine (ctrl_map_ini_gen.F).
50      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
51    
52    checkpoint59n
53    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
54      number in dedicate array "hdiag":
55      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
56        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
57      - many small changes (integer format) for large number of diagnostics
58      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
59        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
60    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
61      usingSphericalGrid, this allows to define the rotated grid coordinates
62      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
63      geographical coordinates according to the inverse of the rotation defined
64      by the Euler angles, so that Coriolis parameter and online-interpolation by
65      exf works with the geographical coordinates on XC/YC/XG/YG.
66      Naturally, this feature does not work with all packages, so some
67      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
68      profiles), because there the coordinates are assumed to be regular
69      spherical grid coordinates.
70    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
71      - introduce isopycnal diffusion coefficient control.
72    o tools/adjoint_options:
73      - additional control vector components.
74    o pkg/mnc: have mnc create marginally meaning full coordinate variables
75      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
76    o pkg/mypackage:
77      - add example of read/write pickup for state-var ;
78      - add entry points to the main code for state-vars diags & write-pickup.
79    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
80      transitions for useExfYearlyFields
81      - add new subroutine that determines the file to read from for
82        use*YearlyFields = .TRUE. and .FALSE.
83      - add a verification experiment to global_with_exf that tests
84        useExfYearlyFields with USE_EXF_INTERPOLATION defined
85    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
86      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
87      subroutines (which could be generated from a template, because they are
88      almost identical), for now they are included in obcs_prescribe_read.F for
89      simplicity
90    o pkg/exf:
91      - add a little more diagnostic to exf_interp_read (in analogy to
92        mds_read_field, can be turned off with debugLevel < debugLevA=1)
93      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
94        ugly but fast by unrolling short inner loops, inserting a unroll=8
95        directive in routine lagran, and splitting a loop and making do while the
96        outermost loop (the latter requires the intoduction of index arrays)
97    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
98    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
99      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
100    o verification/seaice_obcs: updated for restart test and latest options
101    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
102      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
103      for now this is only available for the C-grid code and also within
104      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
105    
106    checkpoint59m
107    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
108      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
109    o gad_som : fix flux output (& diagnostics) to have same units as other  
110      advection scheme fluxes (was previously multiplied by deltaT).  
111    o added verification/seaice_obcs both to test seaice open boundaries
112      and to provide an example matlab scrpt for generating them
113    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
114    o pkg/salt_plume: clean up salt_plume_frac.F to
115      remove redundancy in PlumeMethod 1 and 4
116    o pkg/kpp: added saltplume diagnostics
117    o pkg/obcs and pkg/seaice:
118      - do not set uice and vice to zero when OB*icefile are unspecified
119      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
120      - moved seaice tracer obcs after call to seaice_growth
121    o pkg/salt_plume: added various options for salt plume depth
122      criterion and for vertical distribution of the salt
123    
124    checkpoint59l
125    o pkg/ptracers: new version of ptracers pickup:
126      read meta file and write only fields which are needed to restart.
127      ( same logic as main pickup file ; also using pickupStrictlyMatch )
128    o pkg/seaice:
129      - add timescale for melting due to warm mixed layer as a means of
130        setting SEAICE_availHeatFrac more conveniently
131      - add a CPP-flag/runtime parameter check for flooding algorithm
132      - reformulated availHeat in seaice_growth.F to be independent of AREA
133    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
134      unit changes
135    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
136    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
137      SX vector computer.
138    o pkg/seaice:
139      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
140        seaice forcing fields can now be read only through pkg/exf
141      - removed some unused halos
142    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
143    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
144      or U/VICE from U/VWIND before computing U/VSTRESS
145    
146    checkpoint59k
147    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
148      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
149    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
150      all experiments pass when compile with un-initialised var. checking option.
151    o added pkg/salt_plume
152    o script to test restart (for now, in MITgcm_contrib/jmc_script)
153    o pkg/seaice: new read/write pickup version.
154      read meta file and write only fields which are needed to restart.
155      ( same logic as main pickup file ; also using pickupStrictlyMatch )
156    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
157    o lab_sea.hb87: modify the domain & update output.hb87.txt :
158      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
159      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
160      process. Fixed here by closing the domain at the Northern boundary.
161    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
162    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
163      a set of consecutive levels in/from a 3-D array.
164    o pkg/ptracers:
165      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
166      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
167    
168    checkpoint59j
169    o in pkgs: dic, obcs, offline, rbcs:
170      standard way to compute coeff. for time interpolation between 2 time reccords
171      which retains full precision (& make results less dependent on compiler).
172      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
173    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
174      packages instead of reading ice cover and wind speed separately
175    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
176     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
177      to allow to compile customized code before the update)
178    o cleaning-up:
179      - fix CPP instruction syntax in pkg/obcs
180      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
181        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
182      - fix some threads issue in IO parts.
183    o pkg/dic:
184      - add tons of "_d 0" (--> much better testreports !)
185       and then update outputs of tutorial_global_oce_biogeo
186    o pkg/mom_fluxform:
187      add a special version of momentum advection intended to conserve momentum
188      next to a bathymetry step or a coastline edge. (default = off = #undef)
189    o new read/write pickup version:
190      - for now, only implemented for main (mdsio) pickup file.
191      - write out only what is needed to restart; merge pickup_nh , pickup_ph
192        and main pickup together.
193      - read meta file; read only what is needed to restart; stop if a field
194        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
195        if it make sense (even if the restart is not perfect).
196      - if no meta file, assume that pickup to read corresponds exactly to
197        a pickup that would currently be written.
198      - read pickup written in the old format (until checkpoint59i) if it
199        recognizes an old meta file (no field-list).
200      - add a meta file in exp. which starts from a pickup: 2 cases:
201        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
202         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
203        b) a meta file describing the content of the associated pickup file
204         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
205    o pkg/mdsio & pkg/rw:
206      - new routine to read a meta file ; new set of routine to read
207        Multiple-fields file (with meta file).
208    o added open boundary conditions capability for seaice
209        HSNOW, HSALT, UICE, and VICE
210    
211    checkpoint59i
212    o adjoint:
213      * fix multiDimAdvection adjoint
214        (partial recomputation problem by TAF for fVerT(:,:,kDown)
215        and comlev1 size definition (maxpass vs. max. number of tracers)
216      * verification/global_ocean.90x45x15 adjoint now tests
217        NLFS and multiDimAdvection using DST3 (=30)
218      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
219    o pkg/kpp: add "_d 0" to real constant (if missing);
220      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
221      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
222    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
223      for internal parameters related to restart process (formerly from PARAMS.h)
224      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
225    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
226      as argument. (only atm2d & obcs write_pickup have not yet been updated)
227    o pkg/monitor:
228      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
229      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
230      - account for deep Atmosphere factor and density factor (anelastic)
231    o added open boundary conditions capability for seaice HEFF and AREA
232    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
233      thermodynamics
234      - requires a little reorganization, which affects the testreport results
235        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
236        so that now the conservative form is tested
237      - add a few comments
238    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
239    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
240    o add new diagnostics to seaice: advective, diffusive fluxes (only for
241      multidim-advection, for scheme 2 they are not filled) and transports,
242      thermodynamic growth rates
243    o change units of EmPmR (inside the code, + within coupling interface)
244      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
245      Affects results @ truncation level (cg2d match) and update output of
246       experiments: lab_sea(6), global_ocean.90x40x15(10),
247      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
248      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
249      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
250      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
251    
252    checkpoint59h
253    o pkg/exf:
254      - improve vectorization by moving if-statement out of loops in
255        exf_mapfields, exf_radiation
256      - exf_bulkformulae.F: introduce 2D fields and vectorize code
257    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
258    o testreport:
259      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
260        monitor & update offline_exf_seaice exp. output.
261      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
262    o pkg/seaice:
263      - bug fix in the evp solver: boundary conditions were affected be
264        masking of zMax/zMin (changes results)
265      - minor bug fix in boundary conditions in seaice_calc_strainrates
266        (changes results for no_slip)
267      - seaice_lsr.F: make interpolation of eta dependent on boundaries
268      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
269      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
270        stress formulation and no-slip boundary conditions
271    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
272      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
273    o pkg/seaice: a first HSALT time stepping equation has been checked in
274    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
275      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
276      without requiring DO-IF statements
277    o pkg/thsice:
278      use continuous power-law function for partition of energy between lateral
279      melting/freezing and thinning/thickening ; old code using step function
280      still available with #undef THSICE_FRACEN_POWERLAW
281      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
282    o testreport: change AD testing : check against results/output_adm.txt
283      using same scripts as for forward test.
284    
285    checkpoint59g
286    o adjoint testing: in preparation for changing testreport:
287      - output format: cost and grad written on separated lines
288      - ad output results in directory "results" (instead of "results_ad")
289    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
290    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
291    o pkg/ecco: allow user defined cost function contributions
292    o testreport:
293      Allow to choose (per experiment) the list of tested output variables
294       and the main variable (used to issue a pass/FAIL ) ;
295      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
296      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
297      Also modify printing of summary:
298       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
299       b) echo the list of tested variables in the individual summary.txt of
300          each experiment.
301    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
302      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
303      (but still depend on the tile decompostion of the domain).
304    o pkg/seaice: change a discretization detail to make the B-grid code
305      "more symmetric". This change is likely to remove all "ridges/leads" that
306      where quasi-aligned with the grid in B-grid solutions. It may also be
307      the solution to the stress coupling issues with the B-grid.
308    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
309      remove .cvsignore from input dir. (since testreport no longer run here).
310    o pkg/thsice:
311     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
312     - fix reshaping of sea-ice just after advection:
313       melt all the ice only if ice-volume is too small.
314     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
315       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
316     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
317    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
318      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
319    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
320      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
321      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
322      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
323      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
324      -> update output.txt
325    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
326     this affects truncation error: -> update output.txt of exp:
327      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
328      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
329    
330    checkpoint59f
331    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
332    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
333      a bounded range (in forward mode)
334    o pkg/ecco, ctrl, autodiff and mom_common:
335     internal parameter controls, completements of implementations
336    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
337    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
338      (not seem any difference in testing results).
339    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
340       at face corners.
341    o pkg/generic_advdiff:
342     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
343      loop range indices for computing vertical advection tendency
344      and do the calculation in the interior only (no overlap) ;
345      for now, only implemented for SOM advection (to save CPU time).
346     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
347    o exch2 adjoint
348      First set of changes:
349      - add exch2 hand-written adjoint templates
350      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
351        This will require cleanup in pkg/autodiff/*.F
352        (changed routines currently kept separate in verif. code/)
353      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
354        that used to hide exch2 or cubed-sphere specific code
355        (commented via 'cph-exch2')
356    o pkg/seaice
357      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
358    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
359       output of global_ocean.cs32x15.thsice .
360    
361    checkpoint59e
362    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
363      for B-grid vector (not yet tested) and C-grid vector (<- only used
364      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
365    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
366      (#ifdef ALLOW_SALT_PLUME)
367    o gather_2d/scatter_2d: removed halo regions
368    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
369      scheme and the corresponding test case (under front_relax dir). For now,
370      only available with Skew-flux form and not yet tested in realistic set-up.
371      adjoint: store directives updated, but gradient checks deteriorated,
372      so maybe GM/Redi adjoint is now broken.
373    o seaice adjoint
374      * add AREA, HEFF, HSNOW as control variable
375        (should not change lab_sea results)
376      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
377    o pkg/seaice:
378      * added computation of saltFlux in seaice_growth;
379        For time being, sea ice salinity is assumed constant
380        contribution of snow flooding to freshening of sea ice is neglected.
381        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
382        defaults to 0.0 in order to maintain backward compatibility.
383        Typical values for SEAICE_salinity are 4 to 10 g/kg.
384      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
385      * added SEAICE_availHeatFrac, which specifies fraction of surface level
386        heat content used to melt or grow ice
387      * commented out cap of HICE: it helps keep ice thinner
388      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
389      * applied OBCS T/S mask to HEFFM sea ice mask
390    
391    checkpoint59d
392    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
393     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
394     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
395    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
396     and change default value of parameter "GM_Small_Number";
397     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
398       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
399       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
400    o pkg/ecco: cost function when applying pkg/smooth to controls
401    o pkg/ctrl: add forcingPrecond run time parameter
402    o pkg/seaice:
403     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
404     - fix bug in metric terms of u-equation in LSR solver (implicit part),
405       changes verification/lab_sea
406     - rearrange implicit part of u-equation in LSR solver to make it easier to
407       read, understand, and debug. This causes changes at the truncation level.
408     - fix (serious) bug in the boundary conditions (sign error in the implicit
409       part) of the LSR solver. Changes all LSR results.
410     - fixed problem with HSNOW initialization to avoid thick snow when AREA
411       is initilized with small values - does not change lab_sea results.
412     - added HsnowFile initialization capability
413    o pkg/smooth: addition to model/src and pkg/ctrl so allow
414     initialization of pkg/smooth and application to control vector
415    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
416    o dependencies: pkg/profiles requires pkg/cal
417    o pkg/profiles:
418     - added option ALLOW_PROFILES_GENERICGRID
419         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
420         that interpolation information (grid points and coefficients) is provided
421         within the netcdf input files.
422         -> sample matlab scripts can be found in MITgcm_contrib/gael
423         that allow you to prepare netcdf input files.
424     - also modified: cleaner include statements, cleaner error print statements,
425       cleaner stops when error, and more tests of the netcdf input files consistency.
426    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
427    o pkg/seaice:
428     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
429       requires a new routine: seaice_diagnostics_fill.F
430     - make sure that seaice does not move if not forced (pressure replacement
431       method, Hibler and Ip, 1995), changes results
432     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
433     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
434       It is turned off by default (=-1.), because it changes the results.
435     - make it possible to read AREA from a file, too.
436    
437    checkpoint59c
438    o add S/R and diagnostics for oceanic mixed-layer depth
439    o move GMRedi call after all vertical mixing schemes (including KPP)
440    o pkg/thsice:
441     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
442      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
443    o pkg/obcs:
444     - bug fix for balance code
445    o pkg/seaice:
446      - allow values of SEAICE_elasticParm > 1
447      - add new parameter SEAICE_evpTauRelax as an alternative
448        to SEAICE_elasticParm
449      - make lsr boundary conditions free slip (by default), changes result
450      - add code for no slip boundary conditions for lsr
451      - set minimum of zeta to zero (and not 4e8) (changes results)
452      - add a cap on AREA after advecting AREA if seaice_growth is not called
453    o change calculation of Visbeck K:
454      - no longer depend on tapering scheme; instead, compute slope (limited
455        by GM_maxSlope). this is equivalent to what was comuted before with
456        clipping or linear tappering.
457      - fix vertical averaging (wrong by 1/2 level)
458      - leave the old version (but will not be maintained) within
459        #ifdef OLD_VISBECK_CALC / #endif
460      - update output of exp. ideal_2D_oce
461    o change error catch in calc_r_star to improve vectorization
462    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
463      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
464    o adjoint:
465      Re-organized adjoint checkpointing according to Matt Mazloff
466      (but with modifs/completions/cleanups)
467      Storing is now bundled into large arrays to optimized I/O
468      (and second step in cleanup of the_main_loop)
469    
470    checkpoint59b
471    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
472      - export/import (between ocean & coupler) fields needed for ocean DIC.
473    o pkg/seaice:
474      - get rid of three more exchanges seaice_calc_viscosities (required
475        different loop boundaries in seaice_lsr and seaice_ocean_stress)
476      - bug fix in seaice_ocean_stress (update of lab_sea required)
477      - reduce loop boundaries to necessary minimum also in seaice_evp
478      - go back to the old way of computing deltaC/Z as the adjoint likes that
479        better
480    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
481      passive tracer to an Age Tracer) + update output.txt
482    o pkg/exf:
483      - implement A-grid / C-grid selection for wind-stress input files.
484      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
485      for now, in exf_bulk_largeyeager04.F only :
486      - change implementation for case where windspeed + 2. components wind-stress
487        are read-in. AND use rhoConstFresh to convert evap.
488    o pkg/seaice:
489      - use correct EXCH_UV for wind-forcing (on A-grid).
490      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
491        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
492    o pkg/exf:
493      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
494      EXF_INTERPOLATION:
495      - merge global_with_exf/code version of exf_interp_read.F
496        to the main code ;
497      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
498        reading the file ; Important: This options needs to be defined to recover
499        previous code.
500        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
501      - no longer loose real*8 precision along the way when using exf_iprec=64.
502    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
503      - change discretisation of evp-solver in order to avoid another exchange
504        (changes lab_sea) and clean up a little
505      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
506        help the adjoint (this also changes the results slightly)
507      - add a few "_d 0" where they had been missing in seaice_evp.F
508      - cleaning up: remove unused seaice_calc_rhs.F
509    o pkg/exf: some cleaning-up:
510      - change various "constants" into runtime parameters
511      - cleaned-up Large&Yeager04 routine which should eventually
512        replace exf_bulkformulae.F (changed names of S/R and CPP)
513        and merged various ALLOW_ATM_WIND options
514     only used with thsice pkg (in thsice_get_exf.F):
515      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
516        which are used when useStabilityFct_overIce=TRUE (= the default)
517      - change default values of ice & snow emissivity and scale downward LW
518        by ice & snow emissivity.
519    o pkg/thsice:
520     fix few little problems, in thsice_calc_thickn.F:
521      - growth vertically (and not laterally) if iceFrac == iceMaskMax
522      - melt only laterally if hIce < hThinIce (as the comments say)
523      and in thsice_extend.F:
524      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
525      - start to form ice as soon as the minimum ice-volume is reachable.
526     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
527      and cpl_aim+ocn
528    o pkg/kpp
529     - move computation of surface related input fields to KPP into a new
530       subroutine kpp_forcing_surf.F
531     - remove wrong (within bi,bj loops) EXCH calls.
532     - little cleaning (add argument myThid in last position, cvs header ...)
533     - for now, fix conservation problem by exchanging KPPviscAz (may not
534       be the best fix)
535    o pkg/seaice
536     - check for inconsistent evp parameter/cpp-flag combination
537     - remove leftover errIO flat for obsolete name list error handling
538    o OpenAD
539     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
540    
541    checkpoint59a
542    o pkg/seaice: some parameter clarifications and a little bit of clean up
543    o pkg/thsice: rename run-time parameters:
544       himin       -> hIceMin
545       himin0      -> hThinIce
546       hihig       -> hThickIce
547       i0          -> i0swFrac
548       transCoef   -> bMeltCoef
549       frac_energy -> fracMelting
550      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
551       with default values (for now) that do not change the results.
552      remove old version of thsice vars advection in pkg/seaice.
553    o in FFIELDS.h:
554      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
555      - make pLoad & sIceLoad always available (but still only used if
556         ATMOSPHERIC_LOADING is #define).
557    o pkg/kpp: replaced _KPP_RL with _RL
558    o bug fixes for vertical diffusivity computations when both KPP and
559        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
560        are no longer updating the vertical diffusivity array
561        (passed as argument) but are (re-) setting those arrays.
562    o pkg/seaice: fix bug in evp solver, while doing that
563      - change (improve?) discretization of stress computations for both
564        cgrid-lsr and evp solver
565      - add a new routine to compute strain rates
566      - the above changes lab_sea results
567      - add no slip conditions for evp solver (off by default), lsr-version
568        may follow
569      - fix exchange for shear at Z-points (does not change lab_sea)
570      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
571        (to force the user to pick a time step since there is not "safe" way
572        of choosing it)
573      - add principal stress diagnostics
574      - rearrange fields for evp a little to avoid having to call a: too many
575        exchanges and b: exchanges for stress trensor components which we do
576        not have.
577      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
578        of evp, complete rewrite for lsr case (latter is does not yet work
579        in all cases)
580    o pkg/kpp: add code to have mixing in shelf ice caverns
581      - add myThid to all kpp routines (long overdue)
582    
583    checkpoint59
584    o pkg/exf:
585      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
586        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
587      - move exf header files from lower_case.h to UPPER_CASE.h ;
588        add missing cvs Header & Name
589      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
590      - add namelist param. selectStressGridPosition, exf_monFreq
591      - retire many _CLIM routines, and remove data.exf_clim
592        + params moved to data.exf
593        + climsst, climsss now handled by exf_set_gen, i.e.
594          climss?period=0 refers to constant field,
595          climss?period=-12 to monthly forcing
596      - split up namelists in data.exf
597    o pkg/seaice:
598      - remove seaice_exch and seaice_exch_uv
599      - remove superfluous exchange of theta
600      - add myThid to seaice_budget_ocean/ice
601      - add new interface for atmospheric wind forcing (C-grid only)
602        + new routine
603        + two new field (taux, tauy for stress over ice)
604        + removed one global field (DAIRN) for C-grid case only
605    o pkg/thsise
606      - 2nd set of modifs for thsice adjoint in conjunction with exf
607    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
608    
609    checkpoint58y_post
610    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
611      vertical diffusivity, similar to that in MOM4; turned on using
612      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
613      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
614    o Added capability for 3D specification of background vertical diffusion
615      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
616      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
617      "data" file that contains the 3D vertical diffusivity coefficients.
618    o ice dynamics (pkg/seaice) with thsice thermodynamics:
619      - add code within pkg thsice to advect & diffuse sea-ice fields
620      similar to (and will replace) what has been added in  seaice_advdiff.F,
621      but: - conserving Mass, Heat & Salt.
622           - better when using non-linear advection scheme (not yet fully tested)
623           - can also be used in atmospheric set-up (for now, only the diffusion).
624    
625    checkpoint58x_post
626    o IO option for global-file compact format:
627      - add options when generating topology (utils/exch2/matlab-topology-generator)
628      - add I/O capability (pkg/mdsio).
629      - adapt utils/matlab/rdmds.m to read this format.
630      for now long-line format not yet supported by pkg/mdsio (& exch2).
631    o shelfice: add a few diagnostics
632    
633    checkpoint58w_post
634    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
635      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
636      (and replace horiVertRatio in NH code).
637      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
638                         and tutorial_plume_on_slope (sensitive to truncation)
639    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
640      directly to drive seaice model (C-grid only)
641    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
642     - reintroduce computation of wind from stress,
643     - compute tau (in exf_bulkformulae.F) from windstress averaged to
644       mass points to avoid tau = 0
645     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
646    o rdmnc.m: make it work with "global" files created with gluemnc
647    o rdmnc.m : some improvements in dealing with singleton dimension
648      (tested on all testreport mnc output files).
649    o genmake2: disable pkg/profiles if netcdf test fails.
650    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
651    o move call to cal_readparms up to make calendar parameters/variable available
652      to all packages
653    
654    checkpoint58v_post
655    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
656      useDynP_inEos_Zc tested.
657    o pkg/exf: changes to properly interpolate/mask/scale initial fields
658    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
659      and portions thereof.  See read_cs.txt for description and examples.
660    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
661      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
662      following the great-circle arc between those 2 points.
663    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
664      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
665    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
666     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
667     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
668     - still needs work (not working with some options ; efficiency to improve)
669       and serious testing.
670     - use this scheme for temperature & salinity in 2 advection test exp.:
671       advect_xy & advect_xz, respectively.
672    
673    checkpoint58u_post
674    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
675    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
676    o testreport: add option "-skipdir" to skip some test.
677    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
678      momentum calculation.
679    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
680    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
681      remove checkpoint.F and the_correction_step.F (no longer used);
682      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
683    o add option (linFSConserveTr) to correct for tracer source/sink due to
684      Linear Free surface
685    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
686    o pkg/thsice: fix reading mnc-pickups
687    
688    checkpoint58t_post
689    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
690    o pkg/mdsio:
691     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
692       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
693       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
694     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
695     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
696       either MDS_READ_FIELD or MDS_WRITE_FIELD )
697     - new S/R (to replace MDSWRITEMETA), which allows to write more
698       informations (variable names, time ...) to meta files.
699     - modify rdmds.m to give back the meta file content.
700    o pkg/diagnostics: change vertical interpolation to be safer, and more
701       flexible (define p-levels to interpolate to in data.diagnostics);
702      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
703       diagnostic pointer.
704    o pkg/seaice: more cleaning up of seaice_growth, added many comments
705    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
706    o fix multi-category seaice:
707     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
708       SEAICE_MULTICATEGORY
709     - fix short wave heat flux
710    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
711       and allow to use EVP solver. Change forward lab_sea: test both EVP
712       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
713    o Initial check-in of lab_sea adjoint
714      (very similar to natl_box_adjoint/code_seaice)
715      * used C-grid and EVP solver
716      * used KPP, GM/Redi
717      * uses inAdExact=.TRUE.
718      * gradient checks fail for both ADM and TLM
719        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
720        f.d. gradients actually seem more problematic than ADM, TLM gradients;
721        issue is related to forward mismatch between g77 an ifort
722    o pkg/seaice: overhaul of thermodynamics
723     - growth.F and groatb.F are replaced by new routine seaice_growth.F
724     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
725     - move a few global fields out of SEAICE.h into seaice_growth.F and
726       make them 2D (FICE/QNETO/ ...)
727     - remove FO (it is the same as QNETO)
728     - introduce a few local fields to avoid modifying external fields such
729       as atemp, etc.
730    
731    checkpoint58s_post
732    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
733      changed exf_set_gen.F so that
734        genperiod=0 means input file is one time-constant field and
735        genperiod=-12 means input file contains 12 monthly means
736    o CG2D: use pre-computed solver main-diagonal (stored in common block);
737      this affects truncation error ; generate new output file for exp. which
738      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
739        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
740        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
741        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
742        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
743        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
744    o start implementation of deep-atmosphere and anelastic formulation
745    o verification: remove 2nd copy of input files and use script "prepare_run"
746      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
747    o mom_common/vecinv/fluxform: fix a few initialisation isssues
748    o profiles: fix for multithreaded case
749    
750    o diagnostics: rename few diags:
751      s/'PRESSURE'/'RCENTER '/g
752      s/'TICE    '/'oceFreez'/g
753      s/'TAUX    '/'oceTAUX '/g
754      s/'TAUY    '/'oceTAUY '/g
755      s/'SWFLUX  '/'oceQsw  '/g
756      s/DIFx/DFxE/g
757      s/DIFy/DFyE/g
758      and add few ocean-forcing diagnostics:
759      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
760    o modifications to pkg/seaice/growth.F and budget.F, which change results of
761      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
762      as actual snow thickness.  It now refers everywhere to effective snow
763      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
764    
765    checkpoint58r_post
766    o modifications to pkg/seaice/growth.F, which change results of
767      lab_sea experiment: fixes pertain to melting snow over open water, to
768      masking EVAP under sea ice, and to using the correct AREA variable for
769      computations of EVAP, PRECIP, HSNOW, and GHEFF
770    o add ability to read bathy, salt, and theta using MNC (off by def)
771    o add flooding algorithm and advection of HSNOW for pkg/seaice;
772      both are turned off by default and do no change any results
773    o seaice advection with pkg/thsice: a step toward the use of non-linear
774      advection scheme, but #ifdef or commented out for now (requires more EXCH).
775    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
776      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
777      in natl_box (affects results @ truncation level: update output.txt)
778    o multi-threading and IO:
779      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
780      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
781        (needed to work with SingleCpuIO): tested in all verif. exp.
782    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
783      affects the results (but none of the verification test uses this scheme).
784    o Adding some pkg/diagnostics capability to pkg/seaice
785      (will certainly be subject to changes)
786    o ctrl: adding new control variables:
787      lwflux, lwdown, evap, snowprecip, apressure, runoff
788    
789    checkpoint58q_post
790    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
791      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
792      high_res_cube configuration by 4% on Columbia.
793    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
794      add (in global_with_exf/code) a version of EXF_INTERP_READ without
795      dynamical allocation (seems to work in multi-threaded).
796    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
797      single CPU io) so that TAF does not have to see EESUPPORT.h
798    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
799    
800    checkpoint58p_post
801    o obcs: stop if obcs is used with useCDscheme = .true.
802    o shelfice:
803     - fix a sign error so that no slip at shelfice interface works
804     - remove stop for combination non-hydrostatic code and shelfice. That does
805       not mean, that the results are correct, but at least they are numerically
806       stable
807    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
808    o added adjoint exch routined for all exch*3d* routines
809      and updated flow directives
810    
811    checkpoint58o_post
812    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
813      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
814    o change controling S/R for writing pickup file (new S/R do_write_pickup)
815      and clean-up reading/writing of pickup files.
816    o fix local version of read/write pickup (NH part) in rotating_tank/code
817    o simplify EXCH interface:
818     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
819     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
820    o added the regrid package
821    o shelfice:
822     - add a simple boundary layer scheme to reduce noise
823     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
824    
825    checkpoint58n_post
826    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
827       local variable (not in common block).
828    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
829      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
830      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
831        to work with SingleCpuIO.
832    o add "_d 0" to real constant of pkg/cfc subroutines ;
833       update exp. cfc_exemple & tutorial_cfc_offline output files.
834    o multi-threading and IO:
835      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
836        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
837      - barrier before and after reading.
838      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
839      - avoid using MDS_WRITELOCAL for LAND pkg output.
840      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
841        common-block variables ; Allows multi-threading with master-thread IO.
842    o change default MAX_NO_THREADS from 32 to 4 ;
843      and stop cleanly when MAX_NO_THREADS is too small.
844    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
845    
846    checkpoint58m_post
847    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
848       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
849    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
850       keep global_ocean.90x40x15 (for AD testing) with former secondary test
851       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
852    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
853        add MITgcm_tutorials (= code + all the tutorials)
854    o ecco, option to compute cost for total ssh (mean+anom)
855    o consistent with addition of ptracer and ssh in pkg/profiles
856    o profiles: adding ptracer and ssh
857    o testreport: change multi-test output-file name
858      (from output.txt.{name} to output.{name}.txt)
859    o profiles: now ok for mutli-tiles case
860    o seaice: add 4 parameters for different advection schemes for area,
861      (effective) seaice thickness, enthalphy, and snow height. Their default
862      is the standard parameter SEAICEadvScheme
863    o calc_gw:
864     - add cosFacU in zonal viscous flux (harmonic.visc.).
865     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
866       of tutorial_plume_on_slope.
867    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
868    o calc_gw: true flux-form, account for horizontal grid spacing.
869      update rotating_tank results, but not plume_on_slope (affected at
870      truncation level, 11 digits).
871    
872    checkpoint58l_post
873    o calc_gw:
874     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
875     - remove side-drag for now (need to fix it); update plume_on_slope results.
876     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
877    o commit code to make SST/SSS weights spatially variable
878      (based on either variable in-situ or variable initial T/S weights)
879    o pkg/ecco:
880      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
881        now based on horizontally varying weights wthetaLev, wsaltLev
882      * cost_averagesflags now returns year indices in addition to day, month
883      * sflux balance is performed on annual basis
884        (sflxumm, sfluxmm2, bal_sfluxmm)
885      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
886        including separate counting and multipliers
887    o pkg/rbcs
888      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
889    
890    checkpoint58k_post
891    o testreport:
892     - always build in dir. "build" (if not there, mkdir build instead of building
893       & running in input)
894     - run in dir run (if it exists), in build otherwise.
895     - call prepare_run (if input/prepare_run exists)
896     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
897    o pkg/exf modifications to interpolation and rotation routines for more
898       reasonable treatment of North Pole singularity: for tracers North Pole
899       value is set to northernmost zonal-mean value, for zonal velocity it is
900       set to zero, and for meridional velocity it is set to northernmost value.
901    o pkg/exf/exf_check_range.F
902     - add tile index to diagnostics and move stop statement to the very
903       end of the routine.
904    o pkg/diagnostics: (diagnostics_main_init.F)
905      define title of isomorphic variables according to the current config.
906    o pkg/thsice with pkg/seaice dynamics:
907    - fix domain of computation (interior only, required for exf) and do exchanges
908    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
909    o towards a standard way of dealing with multi-threading in MONITOR
910      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
911    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
912       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
913    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
914    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
915    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
916       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
917    o tracer advection:
918     - clean-up and simplify calc_common_factors.F
919     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
920       advection subroutine (but still not used within DST advection S/R)
921    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
922    
923    checkpoint58j_post
924    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
925      from file (collects calls previously in FORWARD_STEP)
926    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
927    o adjoint store dir. adjusted accordingly
928    o genmake2
929      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
930    
931    checkpoint58i_post
932    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
933      on wind stress (SEAICEstressFactor defaults to 1.)
934    o Total number of Timers is finite (<=40): comment out 2 non-essential one
935      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
936    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
937      on CS-grid: no longer loosing mass.
938    o exf & curvilinear-grid: no longer modify longitude xC & xG.
939    o pkg/ggl90: fix sloppy output and fix a bug
940    o pkg/seaice: added SEAICEuseEVPpickup parameter
941      - Set to false in order to start EVP solver with
942        non-EVP pickup files when using SEAICEuseEVP
943      - fix sign error in diffusion in seaice_calc_rhs
944    
945    checkpoint58h_post
946    * Modifications for bottom topography control
947      o replace hFacC by _hFacC at various places
948      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
949      o add non-self-adjoint cg2d_nsa
950      o update autodiff support routines
951      o re-initialise hfac after ctrl_depth_ini
952      o works for 5x5 box, doesnt work for global_ocean.90x40x15
953    * Adding verification for 5x5 box (4-layer) bottom topography control
954    
955    checkpoint58g_post
956    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
957       used for mean seasonal cycle, mean diurnal cycle); add an example
958       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
959    o pkg/ggl90:
960      - add parameter (minimum surface kinetic energy)
961      - fix bug (avoiding division by zero)
962    o couple pkg/thsice to pkg/seaice:
963      - modify advection in seaice to accomodate new scalar fields to be advected
964      - only muliDimAdection scheme work with seaice/thsice
965      - mapping of thsice-variables to seaice-variables, back and forth
966      - does not break the verification experiments, but does not give the
967        desired results either
968    o pkg/seaice
969      - make (default) second order advection a bit less confusing?
970    
971    checkpoint58f_post
972    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
973      to pkg/seaice):
974      - new routines thsice_map_exf and thsice_get_exf provide the interface
975      - add an additional formal parameter to thsice_solve4temp
976    o pkg/exf:
977      - add new fields wspeed, snowprecip (to be able to couple to thsice)
978      - correct Stefan-Boltzmann constant
979      - new parameter for longwave surface emittance
980      - separate some stuff from exf_bulkformulae into new routines  
981        exf_radiation, exf_wind
982      - add new parameters and constants: longwave emissivity for ocean, ice
983        and snow, evaporation parameters over ice
984      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
985        either wind from stress or stress from wind
986    o pkg/thSIce:
987    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
988    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
989       and THSICE_CALC_THICKN
990    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
991    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
992      to make debugging easier.
993    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
994    o pkg/bulk_force:
995      - clean-up comments and parameters ;
996      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
997    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
998      generate new output for test-experiment: aim.5l_cs.thSI
999    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1000      testreport accordingly
1001    
1002    checkpoint58e_post
1003    o SEAICE_CGRID adjoint done
1004    o R_STAR adjoint implemented.
1005      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1006      * need to sort out init. of h0facc, etc.
1007    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1008      to be able to use it in pure forward.
1009    
1010    checkpoint58d_post
1011    o upgrade simple test-experiment to tutorial example:
1012     step.1: duplicate the experiment and (step.2) will remove the old copy.
1013      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1014      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1015      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1016      tutorial_global_oce_biogeo    <- copy of dic_example
1017      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1018      tutorial_plume_on_slope       <- copy of plume_on_slope
1019      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1020      tutorial_global_oce_optim     <- empty for now (David ?)
1021      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1022     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1023    o correct a sign problem in cost_scat.F
1024    o obcs and ptracers: fix boundary conditions for advections schemes
1025      with larger stencil
1026    o thsice adjoint: start
1027    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1028      completeness
1029    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1030      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1031    o ptracers adjoint:
1032      * avoid extensive recomputatations
1033      * fix missing re-init. of gptr (missed by TAF)
1034    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1035      me to turn off the excessive output to STDOUT that this package produces
1036    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1037      and add those terms in Vector-Invariant formulation.
1038    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1039      if the control period (xx_hfluxperiod etc) is 0
1040    o in profiles pkg, clean routines and fix details
1041    o in ecco pkg, reading ssh data:
1042      fix problem in case the model does not start at iter0=0
1043    o fix mnc-pickup/restart for ptracers
1044    o new package prifiles:
1045      code to compute profile-based cost by Gael Forget
1046      (modifs in ecco, ctrl, autodiff)
1047    o Benign bug fix in initialization (spotted by M. Mazloff) of
1048      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1049    
1050    checkpoint58c_post
1051    o adjoint: finish NLFS adjoint and provide reference output in
1052      verification/global_ocean.90x40x15/results_ad_nlfs
1053    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1054      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1055      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1056      with SEAICE_CGRID defined.
1057    o move calendarDumps from "data" to "data.cal" and clean-up the code
1058      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1059    o add useEXF & useCAL flags (for now, set in hard-coded way)
1060    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1061      (were missing in NH mode, and wrong in quasihydrostatic mode).
1062      waiting for Chris updated version of calc_gw to add those CALLs.
1063    o fix bug in quasihydrostatic S/R ;
1064      add a test for this option: global_ocean.90x40x15.qshyd
1065    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1066      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1067    o add on/off flag useOffLine for package OFFLINE
1068    o seaice:
1069      - modify advection so that it works also on the C-grid
1070      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1071        problem in multi-tile runs with C-grid
1072      - add flags for clipping ice velocities and/or masking solver forcing
1073      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1074        C-grid solver
1075      - added a few comments to seaice_diffusion.F
1076      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1077        are now exclusive)
1078      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1079        required re-ordering the code a little:
1080       + make DAIRN global variable (defined in SEAICE)
1081       + move computation of the viscosities eta and zeta into a new separate
1082         routine (because I need to recompute them in seaice_ocean_stress.F)
1083    
1084    checkpoint58b_post
1085    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1086      update output.txt of exp. aim.5l_cs.thSI
1087    o various mnc cleanups and improvements:
1088      + shrink lookup tables by factor of ~4
1089      + better error reporting when running out of lookup space
1090      + able to handle longer path/file names (up to 500 chars)
1091    o adjoint:
1092      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1093      - TBD: "hidden" mom_vecinv recomp. in dynamics
1094    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1095     (allow to differentiate between forcing components using new integer flags:
1096      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1097     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1098    o ecco
1099      - enable trend removal from SSH anomaly obs.
1100    o adjoint
1101      - a fix for PmEpR when #undef EXACT_CONSERV
1102      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1103      - try to fix "hidden" recomp. in forward_step for NLFS
1104        (NLFS seems broken sometimes after I checked it in)
1105    o seaice:
1106     - add c-grid version of the dynamic solver:
1107       + three new routines that are the c-grid substitute lsr, dynsolver
1108         and ostres
1109       + put a few fields that were local to dynsolver into global common
1110         blocks, so that I can move the computation of stresses etc into
1111         seaice_lsr (saves coding but may break the adjoint).
1112     - replace more hardwired parameters by runtime parameters
1113     - add ice masks that mask the rhs of the implicit solvers where there
1114       is no ice (commented out in seaice_dynsolver, because i am not sure
1115       if this works properly), eventually this should replace the clipping
1116       of ice velocities in seaice_dynsolver to +/-40cm/s.
1117    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1118      include it only where its needed
1119    o move balancing of fluxes before the call of external_forcing_surf
1120    o seaice:
1121      - correct units of turning angles (now they are really in degrees)
1122      - move computation of GWATX/Y out of main routine into dynsolver
1123      - initialize GWATX/Y in seaice_init
1124    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1125      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1126    o seaice: add runtime flags for turning angles (default to zero)
1127    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1128      and trend from exf forcing and ctrl control adjustments
1129    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1130      (since checkpoint57x_post)
1131    o change the default rotation period to 86164.s = the Earth rotation
1132    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1133      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1134    o seaice advection: add code for choosing between the default (2nd order
1135      central differences) and multiDim advection schemes provided by
1136      pkg/generic_advdiff
1137    o seaice:
1138      - removed all references to SEAICE_GRID.h fields from
1139        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1140        (cubed-sphere configuration will change a little)
1141      - grid computations in seaice_init are obsolete now.
1142      - cleaned up code a little so that is easier to read (hopefully).
1143      - added new (better?) discretizations of default advection and diffusion
1144        (turn on with SEAICEuseFluxForm)
1145      - replace 1 in 3d global fields by kSurface in growth.F
1146      
1147    checkpoint58a_post
1148    o seaice:
1149      - bug fix in advect.F
1150    o shelfice:
1151      - separate shelfice load anomaly from pload (breaks with time
1152        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1153        Its default is 0., but it may be computed more cleverly from (unknown)
1154        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1155        done offline. A good approximation of the pressure load anomaly is
1156        necessary to avoid large initial adjustment processes underneath
1157        deep-reaching shelfice.
1158      - small fix in ISOMIP shelfice_thermodynamics
1159      - add more sophisticated thermodynamics of Hellmer (1989), this is
1160        now the default
1161      - give a few constants more intuitive names
1162    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1163      if bulk formulae are used in long integration (especially EmPmR). Turn
1164      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1165      if balancePrintMean, the imbalance that is substracted is printed to
1166      STDOUT.
1167    o fix bug (typo) in obcs_apply_eta.F
1168    o add a new package shelfice which enables us to model the circulation
1169      underneath shelf-ice with draughts of hundreds of meters.
1170     - works
1171     - to do: + include improved thermodynamics
1172              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1173                instead of new field kTopC
1174              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1175                instead of new field R_shelfIce and new code in ini_depth.F
1176                and ini_mask_etc.F?
1177              + adjust vertical mixing schemes?
1178    o seaice pkg:
1179     - add a cpp-flag to include a simple formula for a salinity dependent
1180       freezing point of sea water at the surface
1181     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1182       meridional stresses are now different (and hopefully correct)
1183    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1184       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1185       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1186    o pkg/diagnostics: add options and parameters for regional-statistics
1187       diagnostics ; define regions by reading a region-mask from a file
1188       (might add other options later)
1189    o pkg/bulk_force:
1190     - add option and parameters to use AIM surface-flux formulae.
1191     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1192       others forcing fields (defined in PARM05, parameter file "data") are loaded
1193       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1194     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1195     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1196     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1197       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1198     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1199    
1200    checkpoint58
1201    o add "--embed-source" option to genmake2 which, when the supporting
1202      tools can be compiled (as determined by genmake2) will turn on the
1203      embed_files package which then embeds the entire MITgcm source code
1204      (*.[fFhc] + Makefile) used for the build within the executable
1205      - requested by CNH but off by default
1206      - adds a paltry <9MB to the mitgcmuv executable in most cases
1207      - only writes the output when useEMBEDSRC in eedata is true
1208    o clean up 3-dim. relaxation codes:
1209      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1210      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1211      * Thanks to Tom Haine for testing!
1212    
1213    checkpoint57z_post
1214    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1215      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1216    o fix the pickup behavior for obcs in combination with ptracers
1217    o fix a bug in ptracers_external_fields_load
1218    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1219      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1220    o transfered surface NH pressure to eta field (if exactConserv).
1221    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1222         and update lab_sea output.txt file.
1223    o completing 3-dim. relaxation code: additional term
1224         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1225      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1226      * At compile time, in "EXF_OPTIONS.h" set
1227          #define  ALLOW_CLIMTEMP_RELAXATION
1228          #define  ALLOW_CLIMSALT_RELAXATION
1229      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1230          tauThetaClimRelax3Dim = 15552000.0,
1231          tauSaltClimRelax3Dim  = 15552000.0,
1232      * 3 cases:
1233          1) Use a constant-in-time 3-dim. field
1234          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1235          3) Real-time relax. to time-evolving prescribed field
1236    o Adding Laplacian-type smoothness constraint on
1237      initial and boundary (forcing) controls (ic, bc)
1238      * enable at compile-time via
1239        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1240      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1241      * Absolute scale somewhat unclear so far
1242      * no area weighting was included since no other cost term does so far
1243    
1244    checkpoint57y_post
1245    First step for a NLFS adjoint
1246    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1247    o new init. routines for calc_r_star, calc_surf_dr
1248    o still need to deal with ini_masks_etc
1249    o testreport seemed happy
1250    checkpoint57y_pre
1251    
1252    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1253    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1254    o add new offset feature to offline pkg (plus minor cleanup)
1255    o cfc fixes for final year of integration
1256    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1257      be in GCHEM_OPTIONS).
1258    
1259    checkpoint57x_post
1260    o fix testreport Pb in multiple test experiment.
1261    o cleanup our namelist syntax in verification:
1262      - make it more F95 standards compliant (some work still needed)
1263      - allows the vast majority of our tests to work with gfortran
1264    o Non-Hydrostatic:
1265     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1266     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1267    o Allow to apply AB on T,S rather than on AB(gT,gS):
1268     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1269     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1270       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1271     - need a "clever" read_pickup to restart from the other AB formulation
1272    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1273    o remove some unused variables (reduces number of compiler warnings)
1274    o adjoint
1275      * Disable useVariableViscosity for adjoint for time being
1276        (there are a number of extensive recomputations)
1277      * Initialize certain variables needed for adjoint
1278    
1279    checkpoint57w_post
1280    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1281                 fix the singleCpuIO RS version of MDSWRITEFIELD
1282       and add a WARNING if using globalFiles=T with multi-processors.
1283    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1284      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1285    o tracer advection scheme:
1286      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1287       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1288       was not very convenient).
1289      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1290       (further tests needed for the implicit DST & Flux-Limiter schemes).
1291    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1292      and sRef for convenience, handy, when you want to initialize
1293      ptracers in a large domain with a constant non-zero value. Also,
1294      untangle ptracers_init.F a little.
1295    
1296    checkpoint57v_post
1297    o change dome exp. to use variable viscosity in side-drag terms.
1298    o remove all the files from the cfc_offline test since they are now
1299      incorporated into tutorial_cfc_offline which has been producing
1300      identical results for a few days of testing
1301    o add new parameter: sideDragFactor to enable half-slip-side BC
1302      and change side-drag S/R to use viscosity from mom_calc_visc
1303      (can switch back by setting sideDragFactor=0.); affects results at
1304      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1305       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1306    o vorticity & strain are now computed without masking, to account for
1307      no-slip-side BC in variable viscosity calculation ; mask is applied
1308      anyway later on, before computing advection/coriolis terms.
1309    o modify exp4 to test new obcs support for reading from external files
1310      and for passive tracers
1311    o fix behavior of ptracers_monitor when monitor output is written to a
1312      netcdf-file; still not independent of monitor.F (writes in the same
1313      file).
1314    o change default value of tRef (put a uniform, meaningful value for ocean
1315      & atmos) and initialize sRef (was missing, as Martin mentioned).
1316    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1317      to be proportional to enstrophy dissipation length.  Thus,
1318       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1319      This is now consistent with Smagorinsky and with the manual.
1320    
1321    checkpoint57u_post
1322    o OBCS and PTRACERS: add open boundary support for passive tracers
1323      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1324        OB-values from file; this is not different from the way theta and salinity
1325        are treated
1326      - however, Orlanski-radiation conditions are not supported, and the model
1327        will stop if you use pTracers and Orlanski at the same time.
1328      - beefed up the rountine obcs_external_fields_load: now only those open
1329        boundary values are overwritten with values from files for which there
1330        are really files, otherwise the OB-fields remain untouched. This makes
1331        it possible to use different OBs at different ends of the domain (as
1332        with EXF)
1333    o reduce number of exch calls in shap_filt (s2).
1334    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1335      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1336    
1337    checkpoint57t_post
1338    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1339    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1340      same truncation, independent of the face number: affects affects several
1341      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1342    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1343      note that biharmonic viscosity + no-slip was not tested in any experiment.
1344    o fix bug in non-linear free-surf side-drag ; generate new output for
1345      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1346    o make mnc honor the writeBinaryPrec flag for most kinds of output
1347    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1348    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1349      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1350    o add brackets in multi-terms sum to get same truncation, independent of
1351      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1352      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1353    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1354      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1355      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1356      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1357      Suggested values of viscosity parameters found in mom_calc_visc.
1358      Many new viscosity diagnostics available.
1359    
1360    checkpoint57s_post
1361    o Add clearing-house for viscosity calculations, mom_calc_visc and
1362      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1363      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1364      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1365      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1366      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1367      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1368      ViscAhStrain and viscAhTension are now retired.
1369    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1370    o In response to JMC's bug report, genmake2 now ignores any soft-links
1371      that it finds in the *current* directory when searching for files.
1372      Soft-links found in any other source directories will still work as
1373      they did before.
1374    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1375      a C routine to unlimit the stack size
1376    o mnc-ify pkg/aim snapshot vars
1377    o mnc-ify pkg/land as requested by Daniel
1378    o various changes to mnc including:
1379      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1380      - output can now be grouped so that all files within a group
1381          change the ITER portion of their names in lock-step together
1382      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1383          and works with both EXCH1 and EXCH2 (but needs more testing)
1384      - writing works for all verification test cases w/ g77 on Linux
1385    
1386    checkpoint57r_post
1387    o make MNC variable initialization happen earlier
1388    o add diagnostics for (almost) each term of the momentum Eq.
1389    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1390    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1391    o remove MINIMAL_TAVE_OUTPUT option ;
1392      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1393    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1394      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1395    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1396    o add time-dependent SST, SSS control
1397    o cost terms in ecco/ modularized (new cost_generic.F)
1398    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1399    o new infrastructure for seaice model vs. obs misfits in seaice/
1400      * driver from the_main_loop.F is seaice_cost_driver.F
1401      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1402      * gradient check in Exp. 6a of natl_box_adjoint/
1403    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1404      (see README file)
1405    
1406    checkpoint57q_post
1407    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1408    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1409      - bug was reported by Jean-Michel and Ian Fenty
1410    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1411      update exp. cpl_aim+ocn output.
1412    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1413      Needed for high-res. runs with large global files
1414      to be able to limit tapelev size
1415    o Changed some tests for adjoint:
1416      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1417      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1418      * global_ocean.90x40x15/ back to default 3-level checkpointing
1419    o Modifications to enable scripted COMMON to MODULE conversion
1420      * verification/OpenAD/code/ has necessary scripts and description;
1421      * converts, compiles and runs successfully;
1422    
1423    checkpoint57p_post
1424    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1425    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1426      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1427    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1428    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1429      (was already the case for dissipation with mom_vecinv,
1430       and also the case for grad.PhiHyd when staggered-timeStep)
1431      This will allow to put dissipation out-off the AB time-stepping.
1432     Unfortunately, affects truncation error. Update output of exp. that "fails"
1433      (cg2d matching number) and leave the others for later: front_relax(10),
1434      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1435      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1436    
1437    checkpoint57o_post
1438    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1439      (2) its ready to be documented during the 20050801 DocFest
1440    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1441      for ideal_2D_oce and lab_sea on linux_ia32_g77
1442    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1443      in global1x1_tot/code_seaice_adj to access indices 32, 33
1444      (worth another tag)
1445    
1446    checkpoint57n_post
1447    o adding precip control xx_precip 32
1448    o adding swflux control xx_swflux 33
1449    o Replacing 10 forcing penalty cost routines by 1 generic.
1450    o Implementing partitioning in time-mean and variable adjustment
1451      for atmos. state.
1452    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1453    o in natl_box_adjoint:
1454      * updated exp 1 to 10
1455        (but does not have time-mean vs. variable split results yet)
1456    o updated global1x1/*_seaice_adj/
1457      to incorporate latest changes
1458    o enable useSingleCpuIO for mdsio vector routines
1459      (applies in particular to tapelev I/O)
1460    o removed inefficient K-loop in all active_file*control*.F
1461    
1462    checkpoint57m_post
1463    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1464      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1465    o pkg/exch2: filling of face-corner halo regions is optional
1466      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1467    
1468    checkpoint57l_post
1469     tag before updating tutorials (pre-release-2)
1470    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1471       for output and interpolation of input fields onto model grid)
1472    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1473       Affects results of exp. rotating_tank ; update output.txt.
1474    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1475          and taking the square quantity and/or using a fraction-weight field.
1476    o fix aim_diagnostics_init.F mate numbers.
1477    o add mnc output capability to diagnostics/diagstat and update
1478      our cvsignore files for the ACSII output generated
1479    
1480    checkpoint57k_post
1481    o lab_sea now uses diagnostics package and provides a suite of
1482      new EXF diagnostics output.
1483    
1484    checkpoint57j_post
1485    o exf
1486      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1487        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1488        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1489      * extended diagnostics output
1490        - now includes all EXF variables
1491        - hs, hl moved to common block
1492        - separate S/R for diagnostics, called after ctrl vector is added
1493        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1494        - EXFqnet contains true Qnet (i.e. includes qsw)
1495      * updated verif. lab_sea, global_with_exf
1496      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1497        to ensure that diagnostics sees a true EXFqnet
1498    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1499    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1500      several times with different frequencies.
1501    o mnc-ify the thsice package as requested by Daniel Enderton
1502      - the monitor--MNC output needs work
1503      - many attributes need to be added (most are currently blank)
1504    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1505      - many attributes need to be added (most are currently blank)
1506    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1507    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1508    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1509      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1510         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1511    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1512     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1513    
1514    checkpoint57i_post
1515    o Diagnostics package was changed: diagnostic allocation is now deactivated
1516      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1517    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1518      add 1rst Order upwind vertical Shear.
1519    o add a quick fix for A/B checkpointing in OFFLINE mode
1520    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1521      end-run around the C/Fortran linking horror in eesup/src/timers.F
1522    o added pkg/runclock: allows user to terminate run based on wall clock
1523    o added non-hydrostatic scaling parameter: nh_am2
1524    o pkg/my82: futile attempt to make results compiler-independent by adding
1525      some "_d 0", etc. no effect.
1526    o for mnc output, fill the 'T' coordinate var with myTime and create a
1527      separate 'iter' variable for iteration count
1528    o pkg/diagnostics:
1529      add new capability: output of Global/Regional & per-level statistics ;
1530      tested against monitor output (including land & thSIce) on various exp.
1531    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1532    
1533    checkpoint57h_done
1534      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1535      data.diagnostics, data.gchem, data.ptracers) is done.
1536    
1537    o pkg/diagnostics: prepare for Global/Regional statistics.
1538      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1539    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1540      and rename it: DIFFERENT_MULTIPLE
1541    
1542    checkpoint57h_post
1543    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1544    o pkg/diagnostics: change output frequency, now in seconds (instead
1545      of Nb of iterations). This requires to change data.diagnostics.
1546    checkpoint57h_pre
1547    
1548    o in mnc, let the user create the output dir if both mnc_outdir_date
1549      and mnc_outdir_num are false
1550    o add fflags() to pkg/diagnostics which allows one to specify, on a
1551      per-file basis, the file precision [default behavior is unchanged]
1552    o added diagnostics to pkg/kpp, including computation of mixed layer
1553      depth based on a temperature/density criterion
1554    o updated verification/natl_box to test the new pkg/kpp diagnostics
1555    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1556    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1557    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1558      not mnc -- this mistake was found by JMC and is now corrected
1559    
1560    checkpoint57g_post
1561    o add Adams-Bashforth 3rd Order time stepping:
1562      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1563      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1564    checkpoint57g_pre
1565    
1566    o make lambda[Theta,Salt]ClimRelax spatially varying
1567      (default remains spatially uniform constant based on tau)
1568    o added new control variables
1569      * init. uVel, vVel, etanN
1570      * lambda[Theta,Salt]ClimRelax
1571    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1572      (suggested by G. Forget)
1573    
1574    checkpoint57f_post
1575    o add parameter "baseTime" = model base time = time at iteration zero
1576      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1577      account for baseTime shift
1578    o move Coriolis arrays from PARAMS.h to GRID.h
1579    checkpoint57f_pre
1580    
1581    o mnc-ifying the seaice package
1582    o introduced an alternative length scale calculation for use in the limiting
1583      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1584    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1585    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1586      as well as grad(vort3).  Made it compatible with both approximate form
1587      for the cubed sphere and full form of these gradients.  Added flag
1588      useFullLeith to select between approximate and full form.  
1589    o add "d0" in getcon.F to reduce differences between compilers/platforms
1590      update output.txt of exp. fizhi-gridalt-hs
1591    o change port_rand funtion to allow to set the seed.
1592    o fix obscure MNC bug involving conversion between reals and integers
1593      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1594        new version is now more standards-compliant
1595    o adjoint-related modifications
1596      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1597      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1598      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1599    
1600    checkpoint57e_post
1601    o Adding eddy stress controls a la Ferreira et al.
1602    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1603    
1604    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1605      update output.txt of exp. fizhi-gridalt-hs
1606    o add more "Z" dimensions and associated coordinate vars to MNC
1607    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1608    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1609      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1610      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1611      months and years.  Requires pkg/cal.
1612    o diagnostics: add pickup functionality
1613      - off by default for backwards compatibility
1614      - current version only uses MDSIO -- MNC will be added
1615    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1616    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1617    
1618    checkpoint57d_post
1619    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1620    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1621      output from the diagnostics package
1622    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1623    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1624      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1625    o add coordinate variables to the MNC output from the diagnostics package
1626    o change MNC-flags default value: true when useMNC=TRUE
1627    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1628      the ability (off by default) to read the grid information using MNC
1629    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1630    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1631    o do snap-shot diagnostics at the middle of the time-interval (instead of
1632      at the end).
1633    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1634      new test for AIM with thSIce + slab-ocean
1635    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1636    o move state variable diagnostics to the beginning of the time step ;
1637      (note: still needs some work specially for snap-shot diagnostics)
1638      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1639    
1640    checkpoint57c_post
1641    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1642    o generate new output.txt files on faulks with g77 & the new -ieee option
1643    checkpoint57c_pre
1644    
1645    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1646      update output.txt of exp. global_ocean.90x40x15
1647    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1648      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1649    o add saltFlux(+File) forcing capability with periodicExternalForcing
1650    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1651    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1652    o improvements for the MNC output from DIAGNOSTICS:
1653      - correct handling of the unlimitied dimension
1654      - all dims now have associated coordinate variables
1655      - variables located at U, V, and Corner ("Z") points are now written
1656        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1657        *all* data points are output
1658    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1659    o added pkg/seaice/seaice_monitor.F
1660    o mdsio_readfield.F can now read files visible only to master MPI process.
1661    o pkg/seaice: some test code for ice-modified ocean stress
1662    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1663      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1664      spurious negative numbers for precipitation and humidity.  Will cause
1665      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1666    o pkg/ctrl/
1667      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1668        May be enabled via doPackDiag
1669      *  introduce z-scaling of
1670         + gradient (doZscalePack) and
1671         + control (doZscaleUnpack)
1672    o pkg/mdsio/
1673      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1674      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1675    
1676    checkpoint57b_post
1677    o simplify options in diagnostics_fill arguments (remove weird combinations)
1678    o fix MNC coordinate variables so that they now contain per-face index
1679      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1680      general, EXCH2 grids are only aligned to a "local" coordinate system
1681    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1682    o Implement instantaneous output within pkg diagnostics:
1683      setting a negative frequency in data.diagnostics produces
1684     "snap-shot" output (as opposed to time-average if freq > 0)
1685    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1686      NOTE: change ptracer diagnostics name: use 2 characters to work with
1687            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1688    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1689      becomes the coordinate variable for the 'T' dimension
1690    o add CF-style coordinate variables to MNC
1691      - just a first cut:  numbers are meaningless on the cubesphere and
1692        missing along the T axis but otherwise it works!
1693    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1694    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1695    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1696      this is based directly on what the model compute, so that the content of
1697      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1698    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1699    o clean up build options files for SunOS, in particular
1700      - remove -traditional from xmakedepend
1701      - change -xarch=v9 to -xarch=native for f77
1702      - restore use of make (not gmake)
1703      - add CC=gcc if using g77
1704    o changes per discussion of AM, JMC, & EH3 today:
1705      - move redundant "grid" variables out of "state" -- in preparation of
1706        creating proper CF-style coordinate variables and in recognition
1707        that any/all grid variables can be easily copied (eg. w/NCO) from
1708        the grid files into any of the other NetCDF files
1709      - *always* output grid variables with MDSIO (this will eventually be
1710        changed)
1711      - output MNC grid file if useMNC is true
1712    o every instance of _END_MASTER() has been found and replaced with
1713      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1714      preprocessors
1715    o re-arrange diagnostics pkg initialisation:
1716     - allow each package to extend the available diagnostics list
1717     - add some checking and fix small problems (multi-threaded, ...)
1718     - new S/R diagnostics_fill (replace fill_diagnostics):
1719       look through the short list of active diag. (instead of the long list)
1720       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1721    
1722    checkpoint57a_post
1723    o this set of changes restores TAMC compatibility
1724      tested for global_ocean.90x40x15 adjoint on trough
1725      (what a pain)
1726    
1727    checkpoint57a_pre
1728    o some modifs in tools/build_options for sunos
1729    o call ctrl_pack for ctrl at end for optimcycle=0
1730    
1731    checkpoint57
1732    o add horizontal bi-harmonic viscosity for vertical velocity
1733      - new parameter viscA4W (defaults to viscA4)
1734      - affects only non-hydrostatic code
1735      - to be done: no-slip lateral boundary conditions
1736    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1737    o implement Implicit Vertical advection for pTracers
1738    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1739      (implemented also for implicit vertical diffusion & advection)
1740    o OBCS: extend application of tracer open boundary conditions
1741      to a strip beyond the boundary of width Olx/Oly
1742    o add call monitor to TAF set of required calls (flow directives)
1743      and include in natl_box_adjoint
1744    o untangle a few ifdefs related to cost, ctrl, autodiff
1745      untangel a few ALLOW_ECCO_OPTIMIZATION
1746    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1747      (theta2, salt2 in ecco_cost_weights)
1748    
1749    checkpoint56c_post
1750    o OBCS as control variables
1751      - update ctrl_ad_diff.list, obcs_ad_diff.list
1752      - remove balance of obcs controls from default
1753      - fix index bug nobcs in ctrl_init
1754      - fix dummy fields filen in ctrl_pack
1755      - add dummy weights for obcs
1756    o lsopt: comment out fort.94 output
1757    o optim:
1758      - remove unnecessary header files
1759      - adjusted namelists
1760      - add xerbla.F to Makefile
1761    o exf:
1762      - multiple modifications of exf_check_range
1763      - unit change in exf_init_runoff from [m/year] to [m/s]
1764    o mdsio:
1765      - i/o-vector change debugLevel from debLevA to debLevB
1766    
1767    checkpoint56b_post
1768    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1769      is called from DO_THE_MODEL_IO
1770      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1771      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1772      - clean up PTRACERS_WRITE_TIMEAVE a little
1773    o add another verification experiment that tests both the cfc-pkg and
1774      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1775      reactive tendencies treated inline with regular timestepping
1776    o testreport previously did a lousy job of comparing small numbers, so
1777      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1778      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1779      testreport.
1780    o ptracers_monitor: bug fix for MPI
1781    
1782    checkpoint56a_post
1783    o GCHEM: finish reorganizating the package
1784      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1785        (introduces another 3D-array for each passive tracer, but only if
1786        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1787        gchemTendency is not needed because the timestep is done separately)
1788      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1789      - GCHEM is now---more or less cleanly---separate from PTRACERS
1790      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1791        so clear to me how that should be done in a general way.
1792    o CFC: improve formatting of output in CFC_ATMOS
1793    o PTRACERS:
1794      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1795        that ALL experiments with ptracers enable can be checked. This makes
1796        GCHEM_MONITOR obsolete.
1797      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1798        monitorFreq
1799      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1800    o add PTRACERS (PTR0[1-5]) to testreport output
1801    o exf_check_range:
1802      * default changed to .TRUE.
1803      * will check values for niter0 if debLevA, every timestep if debLevB
1804      * STOP in exf_check_range if 'out of range'
1805      * range chosen generous to allow for potential extema
1806      TBD: a version with stricter range
1807           permitted range would be runtime parameters
1808    o GMredi:
1809      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1810      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1811      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1812    o GCHEM:
1813      - move call to GCHEM_FORCING_SEP, so that it is now called before
1814        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1815      - introduced a useGCHEM runtime flag and applied it everywhere.
1816      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1817        this flag is now only visible within GCHEM-pkg routines.
1818      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1819        be replaced by a 3D array that is computed before thermodynamics; for
1820        this, the tracer ID iTracer had to be included into the parameter list
1821        of ptracers_forcing
1822      - set up forward_step to call gchem_forcing, that will replace
1823        gchem_forcing_int in ptracers_forcing
1824      - cleaning up
1825    o small cleaning of exch2: remove files that are also in eesupp/src
1826    
1827    checkpoint56
1828    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1829    o mnc: cleanup "full" files--fixes out-of-memory problem
1830    o ECCO-GODAE
1831      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1832      * fully merged and updated from SIO code
1833        windstress sign change affects
1834        - exf_inscal_[u/v]stress
1835        - sign of xx_tau[u/v] adjustments
1836        - signs in cost_scat
1837      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1838      * natl_box_adjoint updated and compressed
1839      * 2-level checkpoint switch added
1840        (tested in EXP. 1 of natl_box_adjoint)
1841      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1842    o SVD
1843      * first complete, non-hacked version for SVD calculations
1844      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1845        performed via direct access files admtlm_vector.it????
1846        (via ctrl_[un]pack)
1847      * optimcycle is used for ARPACK iteration counter
1848        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1849      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1850        and add linear transforms where necessary
1851      * controls are initial/final SST, SSS (can be extended; need to check
1852        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1853    o mdsio: filename info to both stderr, stdout
1854    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1855      from sign change
1856    
1857    checkpoint55j_post
1858    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1859      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1860    o add consistent build directories and .cvsignore files to verification
1861    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1862    o make all subroutines 30 or less characters in length for certain older
1863      compilers to work (a thorough search only turns up two routines in
1864      pkg/ptracers)
1865    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1866      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1867    
1868    checkpoint55i_post
1869    o change arrays for total vertical diffusivity (2.D if explicit,
1870      3.D if implicit) ; each ptracer uses its own background value.
1871    o added mnc/NetCDF output capability to ocn_compon_interf
1872      - added bits to verification/cpl_aim+ocn so that it can run on
1873        ITRDA and other clusters without the mpirun "-wd" option
1874    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1875      configuration
1876    o give MNC the ability to create additional files rather than
1877      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1878      - the default is just less than 2GB which is a practical limit
1879        on many systems
1880    o Compute the non-local term using either KPP vertical diffusivity (=default)
1881       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1882    
1883    checkpoint55h_post
1884    o add verification test "vermix"
1885    o remove all the *_ioinc flags and replace with the single global
1886      outputTypesInclusive flag
1887    o allow to set a vertical profile of vertical diffusivity for T & S
1888    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1889    o useMNC moved from data.mnc to data.pkg
1890    
1891    checkpoint55g_post
1892    o Renaming carbon AD experiments to comply with testreport conventions
1893    o Updating adjoint of Held-Suarez hs94.1x64x5
1894    o Fixing directives for non-ECCO forward_step, after ECCO directives
1895      have been fixed to avoid recomp. of do_oceanic_phys
1896      Works well for global_ocean.90x40x15,
1897      but recomp. issue remains for carbon
1898    o Updating adjoint output for natl_box_adjoint after
1899      pkg/ecco has been modified (see taga c55d_post)
1900    
1901    checkpoint55f_post
1902    o rename to timeave_init_fixed
1903    
1904    checkpoint55e_post
1905    o some delicate re-shuffle of store directives to avoid one
1906      extra call of do_oceanic_physics
1907      affects ecco_the_main_loop.F, do_oceanic_physics.F
1908      checkpoint_lev1_directives.h
1909    o NB: this may break global_ocean adjoint temporarily,
1910      but it is clear how to fix it. Will do later, need this now.
1911    
1912    checkpoint55d_post
1913    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1914    o ecco_cost_weights is modified to 1x1 runs
1915    o modifs to allow observations to be read in as
1916      single file or yearly files
1917    o enable to read exf forcing fields as either
1918      single file or yearly files (flag useExfYearlyFields)
1919    checkpoint55d_pre
1920    
1921    o switch between 2-level and 3-level checkpointing
1922    o add ability of MNC to write local and "partial" (eg. 2D slices where
1923      the full 3D field is never actually stored) arrays to NetCDF files
1924      with the correct (that is, the complete multi-dimensional) set of
1925      array indicies
1926      - used in mom_vecinv() to write the diagFreq output
1927      - tested (demonstrated) in verification/aim.5l_cs
1928    o further mnc-ification
1929      - add verification/lab_sea to the list with mnc setups
1930      - fix undefined mnc v-names in cd_code
1931      - add kpp to mnc output (both snapshot and timeave)
1932    o non-hydrostatic code
1933      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1934        in calc_gw.F
1935      - defaults to viscAh
1936      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1937        friction or Leith) in non-hydrostatic mode, as long as there is
1938        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1939    o pkg/cost
1940      extend simple cost functions to treat time mean quantities
1941      (T,U,V) via cost_accumulate_state from cost_tile
1942    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1943        be 2 times larger than the minimum size the advection scheme requires.
1944        now get a perfect conservation of salt in advect_cs test-exp (updated)
1945    o GGL90 (Gaspar's TKE mixed layer)
1946      - add horizontal diffusion of TKE, requires exchanges in
1947        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1948        default. In OPA there is no horizontal diffusion of TKE but the
1949        mixing coefficients are computed from a horizontal average of TKE of
1950        6 points or so. I think that diffusion has a little more physical
1951        justification.
1952      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1953        was in vain)
1954      - mask tke-variable in ggl90_init
1955    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1956    o fix biharmonic diffusion on CS-grid.
1957    o more obcs stuff
1958      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1959        for reading boundary values. This routine is called from
1960        obcs_prescribe_read
1961      - updated obcs_check
1962      - changed sponge layer relaxation parameter units for days to seconds
1963      - turned off sponge layer by default
1964      - changed argument list of OBCS_CALC to myTime+deltaTclock
1965      - fixed about 35 bugs in obcs_external_fields_load
1966    
1967    checkpoint55c_post
1968    o obcs stuff
1969      - new runtime flags useOBCSprescribe, useOBCSbalance
1970      - re-arranged obcs_calc
1971      - moved exf_getobcs to obcs_prescibe_read
1972        obcs_prescibe_read is called after ORLANSKI stuff
1973        and independent of it (executable can contain all).
1974      - updated obcs_check
1975      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1976        These may be necessary only if tangential velocities are
1977        prescribed at OB, not sure, needs testing.
1978    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1979      which simplifies the calls and passes the ifc check-bounds test
1980    
1981    checkpoint55b_post
1982    o add a 2D scalar, Z location, exchange_2 routine.
1983    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1984      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1985      affects advect_cs results (for the wrong reason): update output.txt
1986    o use a more standard discretization for biharmonic viscosity ;
1987     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1988      affects results of dome set-up: update output.txt
1989    o fix gad_advection.F (CubedSphere part), back to version 1.23
1990    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1991    
1992    checkpoint55a_post
1993    o merged code to
1994      * prescribe/read time-dependent open boundaries
1995        (works in conjunction with exf, cal)
1996      * sponge layer code for open boundaries
1997      * each boundary N/S/E/W now has its own CPP option
1998        (healthy for the adjoint)
1999    
2000    checkpoint55
2001    o up-to-date adjoint of previous breaks
2002      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2003      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2004      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2005      - carbon: * remove tr1-related adjoint verification
2006                * add ptracer as control variable
2007    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2008      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2009    
2010    checkpoint54f_post
2011    o in verification/carbin/ remove experiment related to
2012      ALLOW_PASSIVE_TRACER (array tr1 etc)
2013      code_ad/ input_ad/ results_ad
2014    
2015    o add two new packages
2016      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2017        + subject to optimization (memory)
2018      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2019        + subject to reordering (many GOTOs in the original code)
2020        + so far opps is called for every (i,j) point, and then operates in
2021          the vertical; one may want to reorder the scheme in order operate in
2022          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2023          fields)
2024    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2025      - all verification tests compile and run with linux_ia32_g77
2026      - defaults are compatible with current input files--nothing
2027        should change if you were not previously using MNC
2028      - MNC output has been added in numerous places (eg. timeave)
2029        but there are still a few writes not yet do-able with MNC
2030        (this is in progress)
2031      - flags now allow for either/or/both use of MDSIO and MNC and
2032        documentation will soon follow
2033      - numerous small formatting cleanups for ProTeX
2034    o add version info (via BUILD_INFO.h) to MNC and stdout
2035    
2036    checkpoint54e_post
2037    o add two new packages
2038      - pp81 (Packanowski and Philander, 1981), Richardson number and
2039        stratification dependent mixing
2040      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2041      - these scheme operate in a similar manner as KPP (without ghat, of
2042        course), however there is only one diffusivity that is used for both
2043        temperature and salinity (and passive tracers)ç
2044    o add offline package
2045    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2046      provided by Stephanie Dutkiewicz
2047    o genmake2: add ability to search for C compilers and cleanup test output
2048      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2049    
2050    checkpoint54d_post
2051    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2052    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2053      leading to additional shift by 5 days each year of integration
2054       (i.e. leading to considerable offset over the years)
2055    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2056    o start with no AB and no initial filtering (staggerTimeStep):
2057      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2058    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2059      (external loading & cpl import/export stay in forward_step.F)
2060    o update coupling interface to work with new staggerTimeStep
2061    o change MDSIO ptracers_pickup.
2062    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2063    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2064    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2065    
2066    checkpoint54c_post
2067    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2068      this affects (truncation error) output.txt of test-exp:
2069       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2070    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2071    o change Qnet to always be the net heat flux, (+upward).
2072      affects (truncation error) output of natl_box exp.: updated
2073    o define the max number of passive tracers in PTRACERS_SIZE.h
2074    o start to test mnc routinely in exp0
2075    o add sea-ice loading (sIceLoad) as a new forcing field.
2076    
2077    checkpoint54b_post
2078    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2079       impressive on Altix and Opteron systems)
2080    o diagnostics can now write NetCDF files through the mnc package
2081    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2082    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2083    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2084      affects (truncation error) output of lab_sea & natl_box exp.: updated
2085    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2086    
2087    checkpoint54a_post
2088    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2089    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2090    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2091    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2092      + internal_wave (shift in writing cg2d_ini_res)
2093    checkpoint54a_pre
2094    
2095    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2096      - modified verification/lab_sea and natl_box_adjoint accordingly
2097    
2098    checkpoint54
2099    checkpoint53g_post
2100    o prepare splitting of thermodynamics: store convect.counter in common block
2101    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2102      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2103    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2104    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2105    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2106    o restore adjointability
2107    
2108    checkpoint53f_post
2109    o modifications that affect AIM experiment results (update output.txt):
2110      - no advection of S at top interface Nr (pkg/generic_advdiff)
2111      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2112    o AIM pkg:
2113      - include stability function into surf.Flux derivative relative to Tsurf
2114      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2115    
2116    checkpoint53e_post
2117    o merged cylindrical coord configuration
2118    o added rotating_tank experiment
2119    checkpoint53e_pre
2120    
2121    checkpoint53d_post
2122    o faulks upgraded: re-generate output.txt that have changed:
2123       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2124    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2125    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2126    o added Sadourny discretization of Coriolis
2127      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2128      - re-enabled use of omega3 (useAbsVorticity)
2129    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2130      vector-invariant equations
2131      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2132    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2133      hopefully without new bugs
2134      - still to do: biharmonic friction for non-hydrostatic w
2135    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2136    o regenerated output for global_ocean_ebm (using -ieee)
2137    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2138      of mom_common/
2139      - simple re-arrangement of instructions within computing loop
2140    checkpoint53d_pre
2141    
2142    checkpoint53c_post
2143    o new version of coupler for AIM+thSIce and Ocean models
2144     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2145     - land: change Evaporation of snow
2146     - aim with thSIce: fix bug in snow-precip.
2147    o changes to calc_gw.F
2148     - bug fix for w^2 term near the bottom boundary
2149     - (hopefully) improve the lateral slip boundary condtions for use with
2150        partial/looped cells
2151      - because the bug fix changes two verification experiments anyway (exp5
2152        and plume on slope), change the lateral boundary condition from half slip
2153        to the value of no_slip_sides
2154    o ebm package wasnt quite up to the parallel task. Fixed that.
2155    o Adjoint of EBM package + verification
2156      * TLM OK
2157      * ADM not sufficient accuracy yet (needs further testing)
2158    
2159    checkpoint53b_post
2160    o Commiting new energy balance model to repository
2161      * package is pkg/ebm
2162      * verif. is verification/global_ocean_ebm
2163      * references are in ebm_driver.F
2164    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2165    C        Global thermohaline circulation. Part I:
2166    C        Sensitivity to atmospheric moisture transport.
2167    C        J. Climate 12(1), 71-82
2168    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2169    C        Global thermohaline circulation. Part II:
2170    C        Sensitivity with interactive transport.
2171    C        J. Climate 12(1), 83-91
2172    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2173    C        Destabilization of the thermohaline circulation
2174    C        by atmospheric eddy transports.
2175    C        J. Climate 7(12), 1870-1882
2176    o Will need long integration testing.
2177    checkpoint53b_pre
2178    
2179    o created pkg/mom_common in preparation for variable viscosity code
2180    o renamed and split ini_mnc_io
2181    o pkg/land: only liquid water can diffuse or run-off
2182    o AIM using land: soil wetness availability account for snow
2183    o added printMapIncludesZeros to EEPARMS namelist
2184    
2185    checkpoint53a_post
2186    o restore TAMC compatiility for exf_constants.h
2187      (no usage of _d in .h)
2188    o Additional storing in KPP in an attempt to fix
2189      TAMC problem with adjoint of KPP code.
2190      (no success...)
2191      Identical code works fine with TAF.
2192    o Fixed verification/natl_box_adjoint experiments.
2193      Initial conditions for Experiments 4 and 5 are now
2194      set to "SEAICE_initialHEFF=0", which is more reasonable,
2195      and hence gives results closer to that of Experiment 2.
2196      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2197    
2198    checkpoint53
2199    o stable checkpoint with up to date adjoint
2200      TLM tests only run for 1st grdchk at the moment. Its unclear if
2201      this is a code problem or a problem with resetting code for g_
2202      variables that is being autogenerated wrong.
2203      Otherwise:
2204       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2205       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2206         are both still in chaos following their security messes.
2207    
2208    checkpoint52n_post
2209    o various build (mostly genmake2) changes including:
2210      - ability to build/run more easily within Cygwin and MacOS X
2211      - more complicated Makefiles with a stronger dependence on Gnu Make
2212    o pkg/seaice modifications
2213      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2214        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2215        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2216      - changed proxy for geostrophic velocity and updated
2217        verification/lab_sea/results/* accordingly
2218      - removed ADI dynamic solver from pkg/seaice
2219      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2220        they caused a segmentation fault under certain circumstances
2221      - removed unused field WATR
2222    o bug fix in exf-package:
2223      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2224         now reflect that.
2225    o small fixes in the cal-package:
2226      - set reference date to first of January for the 'model'-calendar
2227      - failing of cal_CheckDate in cal_FullDate now actually results in a
2228        warning
2229    o small modifications in exf-package to increase flexibility:
2230      - change climtempfreeze from a constant to a runtime parameter that
2231        is specified in data.exf_clim (default = -1.9)
2232      - introduce runtime parameter windstressmax (default = 2.0) that is
2233        specified in data.exf
2234    o fix in pkg/thsice:
2235      - update Evap (Tsf changes) to be consistent with Latent heat flux
2236      - maintain snow precipitation unchanged (even if Tsf >=0).
2237     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2238    
2239    checkpoint52m_post
2240    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2241      this does not change any of the results, because myIter=0 in swfrac always
2242      lead to jwtype=2 (the default anyway), but the call makes little sense
2243      as a default
2244    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2245    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2246      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2247    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2248    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2249    o extending useSingleCpuIO option to work with new exch2 I/O format
2250      - old-style, missing-tile I/O is still accessible by defining CPP
2251        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2252    o monitor package can write to NetCDF files and/or STDOUT
2253    o fix re-definition bug in MNC_GRID_INIT_ALL()
2254    o doc/api_reference added
2255      - a framework for building an API Reference Manual using all
2256        the "protex" comments embedded in the code
2257      - see pkg/generic_advdiff, pkg/mnc for examples
2258    o MNC:
2259      - make myThid the last argument for all subroutines
2260      - new default for the grid files: NO halos
2261      - add useMNC and other run-time flags
2262      - separate per-file-group handling of the unlimited dimension
2263      - early initialization of MNC w/ flags read at the eeboot stage
2264        and lookup tables set in initialize_fixed
2265      - write all MNC output to a freshly-created directory
2266    o thermodynamics sea-ice (thsice) is now tested with testreport.
2267    o test exp. advect_cs: use the standard cs32 grid ; update output.
2268    o Added functionality to grdchk:
2269      pick global i,j,k position (or nearest wet) where to perform check.
2270    
2271    checkpoint52l_post
2272    o new land formulation:
2273      a) use ground enthalpy as prognostic variable to ensure exact
2274         energy conservation.
2275      b) account for water temperature and for latent heat of freezing
2276         in all processes (rain, run-off, ground storage)
2277      c) compute surface and ground temperature implicitly.
2278    o aim_v23 modification for new land model:
2279      a) Treat separately land / ocean / sea-ice surface fluxes
2280         to allow implicit computation of land & sea-ice surface temp.
2281      b) add snow precipitation.
2282    checkpoint52l_pre
2283    
2284    o fix problem (when 1 tile is empty) in min/max monitor.
2285    o fix bug in timeAve (u,vZetatave in common block)
2286    o no restoring terms under ice for pkg/seaice
2287    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2288    o bug fix for pkg/seaice pickups
2289    o change MNC call locations and add coordinate attributes
2290    o mask vorticity at the corner ; affects global_ocean.cs output
2291    o fix ini_curvilinear_grid ; test CS experiments with mpi
2292    o aim.5l_cs: modify sea-ice fraction input file ; update output
2293    o exf: Adding simple range check routine for exf fields after read
2294    
2295    checkpoint52k_post
2296    o removed top-level directory "diags"
2297      - we migrated these functions to pkg/timeave a long time ago
2298    o fixed bug introduced in pkg/monitor
2299    o accuracy ctrlprec = 32 insuffient for gradient checks using
2300      averaged fields (I/O via cost_averages)
2301      -> use ctrl.h in active_file*.F to control I/O precision.
2302    o paramter list of CALL ADTHE_MAIN_LOOP
2303    o added initial do_the_model_io to ecco
2304    o set all ...Freq to zero after cost_final
2305      taveFreq, dumpFreq, pChkptFreq
2306    o MAIN and ECCO differentiability restored
2307    
2308    checkpoint52j_post
2309    o fix nchklev in tamc.h for global_ocean...
2310    o Bringing flow and store directives up-to-date
2311    o Really weird thing!
2312      call do_the_model_io from the_main_loop with parameters
2313      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2314      TAF places a faulty re-call of initialise_varia
2315      after cost_final call which should not be there!
2316    checkpoint52j_pre
2317    
2318    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2319      error messages
2320    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2321    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2322      debug output
2323    o modfied mdsio_writefield.F to handle non-global files under exch2
2324    o update AIM Cubed-Sphere exp (aim.5l_cs):
2325      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2326    o update AIM Equatorial Channel exp:
2327      use standard aim_v23 pkg and change the SST fields to be more realistic.
2328    o globalFile now works with exch2
2329    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2330      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2331    o limit timeave output for hi-res integrations
2332    
2333    checkpoint52i_post
2334    o removed CPP_EEOPTIONS.h from verification/*/code
2335    o updated the tiling for global_ocean_pressure
2336    checkpoint52i_pre
2337    
2338    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2339      the old pkg/aim).
2340    
2341    checkpoint52h_pre
2342    o shortened offending lines in exch2_send_rx?.template
2343    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2344    o genmake2: add build & execute test for NetCDF code
2345    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2346      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2347    o added useSingleCPUIO flag to monitor.F and mon_out.F
2348    o added temporary hack for sea-ice dynamics on the cube:
2349      metric terms are ignored and it is assumed that
2350      there is no sea-ice on cube faces 1, 2, 4, and 5.
2351    
2352    checkpoint52f_post
2353    o added exch2 cube routines to pkg/exch2
2354    o modified hs94.cs-32x32x5 to use it
2355    o added new grid files to hs94.cs-32x32x5
2356    checkpoint52f_pre
2357    
2358    checkpoint52e_post
2359    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2360      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2361    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2362      to work with implicit vertical advection and AB ;
2363    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2364    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2365     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2366    checkpoint52e_pre
2367    
2368    o fix bug in impldiff when Nr=1 or Nr=2.
2369    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2370    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2371    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2372      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2373    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2374    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2375    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2376    
2377    checkpoint52d_post
2378    o re-tiled many expts to allow comparison in multi-processor mode
2379      - updated output accordingly
2380      - changed hs94.128x64x5 to use intial T from file rather than use the
2381        random number generator
2382    o add infrastructure in model routines for fizhi and gridalt packages
2383    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2384    o changes to permit hi-res, cubed-sphere, configuration
2385      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2386      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2387      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2388        of surface winds for the cube
2389      (A verification experiment, based on global_ocean.cs32x15, but with
2390       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2391       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2392       complete with example surface forcing files and matlab scripts to look
2393       at the output and compare it with that of global_ocean.cs32x15.)
2394    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2395       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2396       to conform to the common rule.
2397    o check-in the first version of the coupler + interfaces for multi-components
2398       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2399       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2400       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2401       - ocean and atmos. share the same horizontal grid (no interpolation).
2402       - exchanges between component and coupler is done in forward_step
2403    o new verification experiment, cpl_aim+ocn:
2404       coupled ocean - AIM atmosphere on cs32 grid.
2405    
2406    checkpoint52d_pre
2407    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2408    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2409    
2410    checkpoint52c_post
2411    o Fixing OPTIONS files for use of exf:
2412      - ALLOW_ECCO not needed
2413      - ECCO_CPPOPTIONS.h should not be included from
2414        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2415        as has been the case in the past
2416      - All cal/exf related options are currently set in
2417        single header file. Should remain so until we
2418        agree on a consistent new policy.
2419    o Removed all CPP options for cal package.
2420      cal has no more CPP options.
2421    o modified STOREs in GAD_ADVECTION
2422    o corrected key comp. for passkey
2423    
2424    checkpoint52b_post
2425    o new version: "thsice" of thermodynamic sea-ice pkg:
2426     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2427     - modify fluxes but do not change theta directly;
2428     - light cleaning of bulk_force pkg (still needed with thsice).
2429     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2430       + output_thsice.txt to test thsice & bulk_force pkgs.
2431    o put back grid & coriolis monitor output.
2432    checkpoint52b_pre
2433    
2434    o call "do_the_model_io" at the beginning (=> dump initial state)
2435    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2436    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2437      (need info on NUMBER_OF_PTRACERS)
2438    o missing PTRACERS headers in some routines
2439    o default tamc.h in pkg/autodiff supposed to crash
2440      to ensure proper customization
2441    
2442    checkpoint52a_post
2443    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2444      - moved surfaceTendencyTice from pkg/seaice to main code
2445      - subroutine FREEZE_SURFACE now limits only surface temperature
2446        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2447        => new output.txt for global_ocean.cs32x15 & global_with_exf
2448      - keep the old version of FREEZE for backward compatibility;
2449        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2450      - corresponding modifs for TAF directives
2451    o added surface flux output variables to TIMEAVE_STATVARS
2452    o time-averaged output for pkg/ptracers
2453    o fix problem with ECCO-related divided adjoint
2454      snapshot file was missing some ad-variables,
2455      but no warning issued by TAF
2456    
2457    checkpoint52a_pre
2458    o some bug fixes for #undef REAL4_IS_SLOW
2459    
2460    checkpoint52 = ecco_c52_e35
2461    o after testing adjoints of checkpoint51u_post
2462    
2463    checkpoint51u_post
2464    o this is the post-merge tag of the ecco-branch
2465      (needs another clean checkout and re-testing)
2466    o various natl_box_adjoint configs and results
2467      but no input fields
2468    o obcs adjoint not yet merged!
2469    o adding ECCO global 1x1 and 2x2 degree configs
2470    o updated/extended some store directives for seaice
2471    o pkg/ecco now containes ecco-specific part of cost function
2472    o top level routines the_main_loop, forward_step
2473      supersede those in model/src/
2474      previous input data.cost now in data.ecco
2475      (new namelist ecco_cost_nml)
2476    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2477    
2478    checkpoint51t_post
2479    o this is the pre-merge tag of the ecco-branch
2480    
2481    checkpoint51s_post
2482    o cleanup: removed various obsolete #define-s
2483    o pkg/grdchk
2484      - renamed 'ph-grd 3' to 'grad-res'
2485      - merged from ecco-branch
2486        (remaining bug fixes for obcs gradient checks)
2487      - additional high-precision output for testreport
2488        (grep for 'precision_grdchk_result')
2489    
2490    checkpoint51r_post
2491    o cleaned up or removed CPP_OPTIONS.h files
2492    o updated results for some of the tests to reflect the new
2493      optfiles (-ieee: -O0 instead of -O3)
2494    
2495    checkpoint51q_post
2496    o cd_code:
2497      - moved cd_scheme.F -> cd_code_scheme.F
2498      - separate read_checkpoint from cd_code_ini_vars.F
2499      - separated cd_code part from write_checkpoint
2500      - updated AD_SOURCE, generated .flow
2501      - added CD_CODE_VARS.h to the_main_loop
2502      - Moving cd_code specific store dir.s to pkg/cd_code
2503    o ctrl package totally restructured
2504      - pack/unpack now optional and decoupled from
2505        xx_/adxx_ I/O
2506      - ctrl_pack/unpack cleaned
2507        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2508      - confined inclusion of AD_CONFIG.h to where necessary.
2509    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2510    
2511    checkpoint51p_post
2512    o create initial cd_code package
2513      - WARNING: the initialization of fields within packages
2514        is broken because INI_FIELDS (where READ_CHECKPOINT is
2515        called) is called *before* PACKAGES_INIT_VARIABLES.
2516        This seems to be backwards since
2517        1) its important to initially zero the entire field including
2518           the "halo" region
2519        2) zeroing needs to be done *before* reading pickup info
2520           and the pickup call might or might not happen in any
2521           particular run
2522      - this needs an overhaul for R2
2523    o cleanup verification/*/code/GMREDI_OPTIONS.h
2524    o cleanup testreport
2525    
2526    checkpoint51o_post
2527    o bringing AD-related verif's up to date with genmake2
2528      - carbon/
2529      - global_ocean.90x40x15/
2530      - hs.94.1x64x5/
2531      - (front_relax/ )
2532    o (more) consistent directory structure for AD-related verif.'s
2533    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2534    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2535    o bug fix in find_alpha.F for MDJWF:
2536      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2537        change rho -> rho-rhoConst
2538      - replace call find_rho to find_rhonum
2539    o initialisation of rFlx extended to full array (required by TAF)
2540      and shifted to thermodynamics
2541    o removed PTRACERS.h in ptracers routine
2542    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2543    o Correcting initialisations for fVerU, fVerV.
2544    o helping TAF to recognize dependency on kUp for
2545      fVerU, fVerV
2546    o Replacing delZ by delR in pkg/ctrl/
2547    checkpoint51o_pre
2548    
2549    o undid all of cp51 pending some cleanups and discussion
2550    o added the [#include "AD_CONFIG.h"] statement to all files that need
2551       it for adjoint/tl #defines
2552     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2553     o removed tools/genmake since it no longer works
2554    
2555    checkpoint51n_post
2556    o modifications to make FREEZE flux visible to pkg/kpp
2557      - moved surfaceTendencyTice from pkg/seaice to main code
2558      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2559      - subroutine FREEZE now limits only surface temperature
2560        (this means new output.txt for global_ocean.90x40x15,
2561         global_ocean.cs32x15, and global_with_exf)
2562    o added surface flux output variables to TIMEAVE_STATVARS
2563    
2564    checkpoint51n_pre
2565    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2566    o added [#include "AD_CONFIG.h"] to all files that use the following
2567      defines:
2568      - ALLOW_ADJOINT_RUN
2569      - ALLOW_TANGENTLINEAR_RUN
2570      - ALLOW_ECCO_OPTIMIZATION
2571    
2572    checkpoint51m_post
2573    o incorporating changes to get TAMC/TAF working in genmake2
2574      - added new TAMC/TAF targets to the Makefile
2575      - various cleanups related to package handling
2576      - these changes should have no impact on the forward model
2577    
2578    checkpoint51l_post
2579    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2580     - faster algorithm for cal_addtime.F
2581     - higher precision arithmetic, where needed
2582     - pkg/exf *startdate variables changed from calendar date to
2583       model integration time
2584    
2585    checkpoint51l_pre
2586    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2587    o enable to apply restoring on S & T only in a latitude band.
2588    o update output (external_forcing_surf modif. change truncation errors)
2589       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2590    
2591    checkpoint51k_post
2592    o change default to: useNHMTerms=.FALSE.
2593     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2594       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2595     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2596        exp1, ideal_2D_oce
2597     - change data file of oceanic exp (leave the results unchanged for now)
2598       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2599    o set gravitySign automatically according to the vertical coordinate used
2600      (and change sign: back to "logical" value: +1 when R increases downward)
2601    o added an include barrier to the default CPP_OPTIONS.h and
2602      removed the #include "PACKAGES_CONFIG.h" from it
2603    o fix a bug in mom_fluxform (from chk51j_post)
2604    
2605    checkpoint51j_post
2606    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2607    o adjusted some flow directives (dynamics, thermodynamics)
2608    o added cubed-sphere case to test cost function
2609    o heckpoint_lev?_directives.h now include
2610      pkg-specific directives, whenever those are enabled.
2611    o Moving pkg-specific flow directives to corresponding pkg
2612      Moving pkg-specific differentiation list to corresponding pkg
2613      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2614      ---> conventions are
2615           - pkg_ad.flow
2616           - pkg_ad_diff.list
2617           - pkg_ad_check_lev?_dir.h
2618    
2619    checkpoint51i_post
2620    o merge of the branch-genmake2
2621      - knowingly breaks the older genmake
2622      - automatic generation of all ALLOW_${PKG_NAME} defines
2623      - new testreport supersedes older testscript
2624    o large number of package inclusion and header cleanups
2625    checkpoint51i_pre
2626    
2627    o new output for adjoin of global ocean vector invariant
2628    o fix for checkpoint of thermodynamic seaice and bulk_force
2629    o Steph gchem various cleanups
2630    
2631    checkpoint 51h_pre
2632    o fixed some single quotes
2633    o modify gchem pkg to be more versatile
2634    o modifications to clean up dic pkg
2635    o add pkg/cfc
2636    
2637    checkpoint51g_post
2638    o provide links for ARPACK and ADM*TLM
2639    o start removing verification/vero/
2640    o update AD-related stuff
2641      (in particular some IF-statements in model/src/ routines)
2642    o adding to verification/global_ocean.90x40x15/ adjoint of
2643      vector invariant setup
2644    
2645    checkpoint51f_post
2646    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2647    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2648      of tracer Green's fucntions for ocean inversion project.
2649    
2650    checkpoint51f_pre
2651    o Added on-the-fly spatial interpolation capability
2652        "USE_EXF_INTERPOLATION" to pkg/exf.
2653      - This is a temporary Cartesian-grid hack until
2654        the super-duper ESMF coupler becomes available.
2655      - See verification/global_with_exf/README for usage example.
2656      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2657        flags and modified pkg/seaice accordingly.
2658    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2659        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2660        non-local transport term.
2661    
2662    checkpoint51e_post
2663    o pkg/mom_vecinv:
2664      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2665      - add time-ave diagnostic of vorticity advection.
2666    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2667    o atmospheric geopotential: - include water vapor effect;
2668                                - use p^kappa in p* scaling.
2669    o land pkg: read initial state from files.
2670    o AIM : add stratospheric drag in the upper level
2671    
2672    checkpoint51d_post
2673    o change function ILNBLNK (=> last non-blank char.) to return zero
2674      (instead of the string length) when the string. char is empty
2675    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2676    o modif's to restore TAMC compatibility
2677      - avoid "_d" constructs in PARAMETER declarations
2678      - avoid interrupting lines by comment lines
2679    o Use cluster local disks for purely local I/O
2680      vs. globally visible disks needed for ctrl stuff
2681      (merged from ecco-branch)
2682      - new active_file_loc... and mdsio_..._loc routines
2683      - affected packages: autodiff, ctrl, grdchk, mdsio
2684    
2685    checkpoint51c_post
2686    o introducing integer flag debugLevel
2687      - debLevZero: suppress all output
2688      - debLevA: standard
2689      - debLevB: equivalent to current debugMode=.TRUE.
2690    o introducing pathname variable mdsioLocalDir for mdsio
2691      that can be specified at runtime
2692      (relevant for cluster I/O to local disk)
2693    `
2694    >>>checkpoint51b_post
2695    adjoint of ptracers
2696    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2697    o extended state in checkpoint_lev?, etc.
2698    o alternative ctrl/cost with tr1 or ptracer
2699    o new comlev1_bibj_ptracers
2700    o new ptracers.flow
2701    o made ptracers_forcing same as external_forcing_s
2702    o added verification for adjoint with ptracers
2703      - adm. grdchk fail so far
2704      - tlm. grdchk OK
2705      - checked tapelev/comlev recomputations: OK
2706    <<<checkpoint51b_pre
2707    
2708    checkpoint51a_post
2709    o added code for biogeochemistry package
2710      - new pkgs: dic, gchem
2711      - new subroutine in ptracers
2712    o modify code for biogeo packages
2713      - in model/src and pkg/ptracers
2714    
2715    checkpoint51
2716    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2717      - autodiff, ctrl, exf, grdchk, seaice
2718      kept separate packages
2719      - cost, ecco, obcs
2720    o updating verification/internal_wave, verification/lab_sea
2721      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2722    
2723    checkpoint50i_post
2724    o Preparing next differentiable checkpoint and sync
2725      of MAIN vs. ecco-branch
2726      - 1st step: this one is differentiable
2727      - 2nd step: next(! not this) checkpoint will have updated packages
2728                  from ecco-branch)
2729    
2730    checkpoint50h_post
2731    o new package "land": provide surface BC for AIM.
2732    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2733    o AIM: use true log-P extrapolation for near surface temp (= as in
2734        F.Molteni paper) ; update aim.5l_cs output.
2735    o New variable in PARM03 for more flexible pickups
2736    o somewhat cleaned package initialisation sequence for
2737      ctrl/ cost/ ecco/ in packages_... routines
2738    
2739    checkpoint50g_post
2740    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2741      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2742      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2743        made the default because of faster convergence than ADI
2744    
2745    checkpoint50f_post
2746    o exf totally restructured
2747      - replaced all exf_set_ routines by one generic exf_set_gen.F
2748        and made sure it's still differentiable
2749      - split exf_getffields.F into new exf_bulkformulae.F
2750      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2751      - updated adjoint/makefile and relevant verif. accordingly
2752    
2753    checkpoint50f_pre
2754     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2755          + change Evap over land. (update aim.5l_cs output)
2756     o added missing .cvsignores and made uniform across expts
2757     o changed configuration of tidal_basin_2d expt
2758     o added pkg/debug functions for tracing code in fatal crashes
2759     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2760     o new fn in pkg/monitor to stop model if solution grows too big
2761     o removed lots of single quotes from comments
2762    
2763    checkpoint50e_post
2764    o make KPP work with PTRACERS
2765     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2766       nearly a copy of kpp_transport_s
2767     - there is no analogue to SurfaceTendencyS, so I have to use
2768       gPtr(of the surface layer) instead
2769    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2770    checkpoint50e_pre
2771    
2772    checkpoint50d_post
2773    o change kpp output from multiple-record state files to single-record state
2774      files analogous to write_state.F
2775    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2776      analogous to the cg2d-related output.
2777    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2778      so that writing to internal file fn (with length 512) fails.
2779    checkpoint50d_pre
2780    
2781    checkpoint50c_post
2782    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2783    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2784    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2785    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2786    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2787    
2788    checkpoint50c_pre
2789    Merging from release1_p13:
2790    o bug fix for pkg/seaice dynamic solver
2791    o Added SEAICE_initialHEFF to pkg/seaice
2792    
2793    checkpoint50b_post
2794    o store u*,v* in gU,V instead of in guNm1,gvNm1
2795    o in order to put the momForcing out of the Adams-Bashforth:
2796      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2797      to timestep.F
2798    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2799    o re-generate output for highly sensitive test-exp:
2800       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2801    
2802    checkpoint50b_pre
2803    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2804    o corrected CPP option mismatch in exf_Bulk... functions for case
2805      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2806    
2807    checkpoint50a_post
2808    o Bug fix for merging between c50 and KPP.
2809      ikey was passed from thermodynamics to kpp_calc via
2810      common block rather than being recomputed in kpp_calc,
2811      in contradiction with new key itdkey.
2812      New key ikppkey created, and tamc.h headers updated.
2813    
2814    checkpoint50
2815    - 2nd step of merge with ecco-branch:
2816      merge changes in ecco-branch back into main trunk
2817    - bug fix in find_alpha
2818    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2819    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2820    - merged some sliced AD support routines
2821    
2822    checkpoint49
2823    merged from ecco-branch:
2824    o exf:
2825      - Enable initialisation of forcing fields to constant
2826        (runtime) values.
2827      - in exf_getffields.F
2828        Reduce i-/j-loop to interior domain, discarding overlaps.
2829        That also fixes wrong TAF-key computations for key_1, key_2
2830        with bulf formulae.
2831      - exf_init.F modify #ifdef for exf_init_evap
2832      - exf_getffieldrec.F, ctrl_getrec.F
2833        The following INT-usages are not safe:
2834          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2835          fldcount = int(fldsecs/fldperiod) + 1
2836        and were modified.
2837    o autodiff: checkpoint_lev...
2838      - updated storing for bulk formulae (some arrays were missing)
2839      - added state for seaice package
2840      - synchronized with main branch
2841    o DIVA:
2842      Modif.s in
2843      - the_main_loop.F
2844      - the_model_main.F
2845      and added cost_final_restore.F cost_final_store.F
2846      o With these changes, it is possible to fully separate
2847        the first forward run to compute the cost function (mdthe_main_loop)
2848        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2849        into separate model executions.
2850        This enables better tuning of DIVA to given queue sizes.
2851      o Loss of cost function value in consecutive DIVA runs is
2852        fixed by storing to 'costfinal' file.
2853      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2854        beginning/end of adjoint integration is accounted for.
2855      The current changes apply to TAF-1.4.26.
2856      TAF has one remaining bug, requiring one manual change
2857      (see MITgcm manual).
2858    o cal: synchronized between MAIN and ecco-branch
2859    
2860    checkpoint48i_post
2861    o Changes to restore differentiability of code w.r.t. previous tag
2862      (mostly adding new routines to make list and replacing
2863      pressure by totPhiHyd).
2864    o Updated and merged grdchk package
2865      - has both ADM and TLM checks
2866      - works for single- and multi-proc.
2867      - output cleaned
2868      - worked successfully for parallel DIVA
2869    o genmake:
2870      - Adding -platform=SP4
2871      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2872    o Modif. for DIVA:
2873      ctrl_unpack should not be called in intermediate DIVA interval.
2874      (similar thing would apply for active files such as
2875      tbar, sbar, psbar, which should not be reinitialised;
2876      only relevant for ecco-branch)
2877    
2878    checkpoint48h_post
2879    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2880    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2881    o Added SEAICE_initialHEFF to pkg/seaice
2882    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2883    
2884    checkpoint48g_post
2885    --- EOS:
2886    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2887      store total Potential in totPhyHyd for diagnostics & EOS.
2888    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2889    --- Pressure/geopotential gradient:
2890    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2891    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2892      ( changes results of global_ocean_pressure )
2893    o NLFS + z-coord.: add eta*Rho' contribution.
2894    o accurate phiHyd when using interface-W at the middle between 2 centers
2895     ( changes results of ideal_2D_oce )
2896    o includes r* 2nd term in potential gradient.
2897    
2898    checkpoint48f_post
2899    Merging from release1_p12:
2900    o Modifications for using pkg/exf with pkg/seaice
2901      - improved description of the various forcing configurations
2902      - added basic radiation bulk formulae to pkg/exf
2903      - units/sign fix for evap computation in exf_getffields.F
2904      - updated verification/global_with_exf/results/output.txt
2905    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2906      (SBO) core products, including oceanic mass, center-of-mass,
2907      angular, and bottom pressure (see pkg/sbo/README.sbo).
2908    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2909      to avoid negative values in shallow regions.
2910      - updated verification/natl_box/results/output.txt
2911      - updated verification/lab_sea/results/output.txt
2912    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2913    o Added useSingleCpuIO option (see PARAMS.h).
2914    o Updated useSingleCpuIO option in mdsio_writefield.F to
2915      work with multi-field files, e.g., for single-file pickup.
2916    o pkg/seaice:
2917      - bug fix in growth.F: QNET for no shortwave case
2918      - added HeffFile for specifying initial sea-ice thickness
2919      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2920    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2921      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2922    o pkg/seaice:
2923      - adjoint-friendly modifications
2924      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2925    
2926    checkpoint48e_post
2927    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2928    o dynamics: change definition of computational domain & adapt mom_fluxform
2929      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2930    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2931        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2932        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2933        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2934        inverted_barometer solid-body.cs-32x32x1
2935      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2936    
2937    checkpoint48d_post
2938    o in preparation for r*:
2939     a) use pre-computed gradient of hydrostatic potential:
2940        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2941     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2942        => affects results of glob_oce_pressure (different truncation error)  
2943      update output.txt of ideal_2D_oce & global_ocean_pressure
2944    
2945    checkpoint48d_pre
2946    o in preparation for r*:
2947      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2948      pass the 2 comp. of the grad. as arguments to momentum S/R.
2949      but for the moment, only used if it does not change the results.
2950    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2951    
2952    checkpoint48c_post
2953    Modifications in treatment of initial flux forcing controls
2954    to avoid extra storing of flux fields.
2955    
2956    checkpoint48c_pre
2957    o Added tidal_basin_2d experiment (currently 1D!)
2958    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2959    
2960    checkpoint48b_post
2961    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2962     (modification to pressure gradient not yet implemented)
2963    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2964      (for U & V) that are used for vertical advection of momentum.
2965    
2966    checkpoint48a_post
2967    o In preparation for r*, use temp. array to compute vertical transport
2968       in flux-form momentum pkg. => change results of few test-exp.
2969      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2970                        lab_sea, natl_box & plume_on_slope
2971    
2972    checkpoint48
2973    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2974    
2975    checkpoint47j_post
2976    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2977    o moved adexch from forward_step to addummy_in_stepping
2978    o added exch in ctrl_map_...
2979    o aveFreq.=0. at end of cost_final to avoid overwrite in
2980      reverse checkpointing loop
2981    o Yet more changes in gmredi:
2982      * adgmredi_calc_tensor
2983        avoiding all recomputation of gmredi_slope_limit
2984      * adgmredi_x/y/rtransport
2985        added flag for excessive storing to avoid recomp. of
2986        u/v/rtans, dTdx/y/z
2987        -> this is not really necessary and very memory-consuming
2988      * adgmredi_slope_psi:
2989        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2990      * gmredi_slope_limit
2991        re-activated full calculation of taperfct for case 'ac02'
2992    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2993    
2994    checkpoint47i_post
2995    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2996    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2997      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2998    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2999    o gmredi: fix few bugs.
3000    
3001    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3002    This will be a good checkpoint to plug into the ecco-branch.
3003    o few modif.'s to get latest version adjointed
3004      (mainly kick out code in ini_linear_phisurf)
3005    o modif's to run adjoint with exactConserv
3006    o case GM_BOLUS_ADVEC should be cleaned
3007      S/R gmredi_slope_psi should be cleaned
3008    o verification/carbon now has exactConserv=.TRUE.
3009    
3010    checkpoint47g_post
3011    o time-average AIM output: becomes independent from statvars time-average
3012      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3013    o After TAF bug fix:
3014      Tested adjoint of gmredi package.
3015      Tests were done with checkpoint47 rather than with latest
3016      checkpoint47f_post since the latter is broken for the adjoint
3017      verification/carbon/ contains both ADM and TLM gradient checks.
3018    Here they are, before they get changed/lost/stolen.
3019    Mostly modif.'s to fix numerical sensitivities.
3020    Gradient checks OK for
3021    - GM_taper_scheme:
3022      * clipping
3023      * ac02
3024      * linear
3025      * glw91
3026      * dm95
3027      * ldd97
3028    - GMREDI_OPTIONS:
3029      * GM_VISBECK_VARIABLE_K
3030      * GM_NON_UNITY_DIAGONAL
3031      * GM_EXTRA_DIAGONAL
3032      * GM_BOLUS_ADVEC
3033    in conjunction with data.gmredi parameters to be checked in
3034    in a few minutes under verification/carbon/code/
3035    
3036    checkpoint47f_post
3037    Merging from release1_p10:
3038    o modifications for using pkg/exf with pkg/seaice
3039      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3040        and SEAICE_EXTERNAL_FLUXES
3041      - pkg/exf CPP options EXF_READ_EVAP and
3042        EXF_NO_BULK_COMPUTATIONS
3043      - usage examples are Experiments 8 and 9 in
3044        verification/lab_sea/README
3045      - verification/lab_sea default experiment now uses
3046        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3047    
3048    checkpoint47e_post
3049    o created a tag prior to creating a branch
3050    
3051    checkpoint47d_post
3052    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3053      at the bottom boundary had an erroneous half slip boundary condition
3054    o added bottom drag and no slip boundary condition capabilities to
3055      oceanic pressure coordinates code
3056    o added new verification experiment global_ocean_pressure, this experiment is
3057      also described in the tutorial section of the manual
3058    checkpoint47d_pre
3059    
3060    checkpoint47c_post
3061    o Added a verification experiment for a global cubed-sphere ocean run
3062      -  verification/global_ocean.cubed32x32x30
3063      -  uses pkg/therm_seaice and pkg/bulk_forcing
3064    
3065    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3066    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3067      when using P-coordinate; only implemented for atmospheric config.
3068    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3069      NOTES: requires option NONLIN_FRSURF to be "#define".
3070    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3071    
3072    checkpoint47b_post
3073    Merging from release1_p9:
3074    o pkg/seaice
3075      - removed GOTO's and added taf directives
3076      - double precision constants to reduce the g77 (Linux)
3077        to F77 (SGI) differences reported in release1_p8
3078    o tools/genmake
3079      - added SGI options
3080    o verification/testscript
3081      - updated to that of checkpoint47a_post
3082    o verification/global_ocean.90x40x15/input/eedata
3083      - modified for SGI f77 compatibility
3084    o verification/lab_sea
3085      - added description of sea-ice model
3086      - added missing matlab routines
3087      - added test of thermodynamics parallelization
3088    
3089    checkpoint47a_post
3090    o new pkg: aim_v23
3091     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3092       for now, keep the same surface forcing as before.
3093     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3094     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3095     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3096    o add diagnostic of surface correction term in monitor output
3097    
3098    o bulk_force and therm_seaice
3099    - Two packages:  bulk_force (Bulk forcing)
3100      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3101    - Earlier integration from Stephaine Dutkiewicz
3102      and Patrick Heimbach.
3103    - Two ifdef statements for compile time,
3104       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3105    
3106    checkpoint47
3107    differentiable version of checkpoint46n_post
3108    o bug fix in quasihydrostaticterms
3109    o * "clean" adjoint code (in terms of extensive recomputations)
3110        can now be obtained for all GMREDI options (i.e. for
3111        - GM_VISBECK_VARIABLE_K
3112        - GM_NON_UNITY_DIAGONAL
3113        - GM_EXTRA_DIAGONAL
3114        - GM_BOLUS_ADVEC )
3115      * However, wrong gradient check problem remains unsolved.
3116      * New CPP options have been introduced for different
3117        tapering schemes
3118    o external_fields_load now part of differentiation list
3119    o pressure needs multiple storing;
3120      would be nice to have store_pressure at beginning or
3121      end of forward_step, e.g. by having phiHyd global (5-dim.)
3122      (NB: pressure is needed for certain cases in find_rho,
3123      which is also invoked through convective_adjustment).
3124    o recomputations in find_rho for cases
3125     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3126    o #define ATMOSPHERIC_LOADING should be differentiable
3127    o ini_forcing shifted to begining of initialise_varia
3128    o Incorporating QNVS line search routines into MITgcm
3129      (this is separate code, and therefore not under pkg)
3130      lsopt/, optim/
3131    o Updated verification/carbon/
3132      - #define GM_VISBECK_VARIABLE_K
3133      - GM_taper_scheme    = 'ldd97'    
3134    
3135    checkpoint46n_post
3136    Merging from release1_p8:
3137    o verification/natl_box:
3138      updating new external_fields_load routine
3139    o New package: pkg/seaice
3140      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3141      The sea-ice code is based on Hibler (1979-1980).
3142      Two sea-ice dynamic solvers, ADI and LSR, are included.
3143      In addition to computing prognostic sea-ice variables and diagnosing
3144      the forcing/external data fields that drive the ocean model,
3145      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3146      The implied surface heat flux is then stored in variable
3147      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3148      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3149      non-local transport term.  Because this call precedes model
3150      thermodynamics, temperature under sea-ice may not be "exactly" at
3151      the freezing point by the time theta is dumped or time-averaged.
3152      N.B.: fairly large differences in accuracy occur across
3153            different platforms/compilers; comparison between
3154            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3155            generated output gives:
3156       T           S           U           V
3157      C D M    c        m  s        m  s        m  s        m  s
3158      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3159      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3160      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3161    
3162      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3163    o GAD:
3164      - generated new common blocks to account for call of
3165        same gad routines with differing traceridentities
3166        (needed to modify tracerIdentity indices in GAD.h)
3167      - generated separate common blocks for case useCubedSphereExchange
3168        (Department of Futurology)
3169      - parameter lists to gmredi_?transport: added tracerIdentity
3170      - added new key indices to tamc.h
3171    o external_fields_load:
3172      - added this routine to TAF list
3173      - needed to make some common blocks global and additional storing
3174        along the same lines as exf package (checkpoint_lev?_directives.h)
3175    o exf:
3176      updated external forcing package
3177      - bug fixes carried over from ecco-branch
3178        (missing OBCS_OPTIONS.h in two routines)
3179      - enable easy to use "no forcing".
3180      - added exf I/O for atmospheric loading
3181      - added exf I/O for runoff data
3182      - transfered scaling between exf <-> MITgcm to exf namelist
3183    o Adding new verification experiment global_with_exf.
3184      This verification experiment is almost identical to the
3185      global_ocean.90x40x15 experiment, except that it uses
3186      the exf (and cal) package instead of the
3187      external_fields_load routine (cf README file).
3188    
3189    checkpoint46m_post
3190    o modified testscript to return -- when there are no lines of "%MON" output
3191    o added new flag "quasiHydrostatic" for QH mode
3192      and new routine quasihydrostaticterms()
3193    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3194      New routine: mom_u_coriolis_nh()
3195    o fixed sign of non-hydrostatic metric terms in u and v equations.
3196      Depend on correct sign of gravitySign.
3197    o added work.pc* to .cvsignore in aim directories using ifc
3198    o introduced flag for controllin non-hydrostatic metric terms
3199    o removed gravitySign from PARM04
3200    o switched to g77/ifc from pgf77 in aim experiments
3201    
3202    checkpoint46l_post
3203    o made convective adjustment work with pressure coordinates:
3204     - changed the direction of k-loop in convective_adjustment.F for the
3205       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3206     - adjusted the reference pressure k-index in convective_adjustment.F
3207     - adjusted the convection condition in convect.F (in analogy to
3208       calc_ivdc.F)
3209     - convective_adjustment no longer computes anything on the halos
3210     - removed the warnings about negative salinity from find_rho.F and
3211       find_alpha.F; instead the new routine look_for_neg_salinity, called
3212       at the beginning of find_rho, find_alpha, and find_beta, does a
3213       check of the entire slice, if CPP-option
3214       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3215    checkpoint46l_pre
3216    
3217    checkpoint46k_post
3218    o fixed the verification/global_ocean.90x40x15 experiment:
3219     - new bathymetry (the world according to A., JMC, and M.)
3220     - new initial fields and forcing fields (*.bin files)
3221     - new POLY3.COEFFS (for the next release one should switch to a full
3222       equation of state: JMD95P or MDJWF)
3223     - fixed several errors and redundancies in the data file
3224     - experiment uses looped cells
3225     - added matlab directory with diagnostic scripts for plotting of output
3226    
3227    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3228     - read AIM physics parameters from a file (data.aimphys)
3229     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3230    
3231    checkpoint46j_post
3232    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3233    o move wVel computation at the end of the time step, in S/R integr_continuity
3234    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3235    o update timeave pkg for wVel diagnostic.
3236    checkpoint46j_pre
3237    
3238    checkpoint46i_post
3239    o Clean up AIM package (and keep the results unchanged):
3240      include CPP_OPTION and use IMPLICT NONE in all routines ;
3241      declare all the variables _RL ; use _d 0 for all numerical constants.
3242      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3243    
3244    checkpoint46h_post
3245    o cleaned up the use of rhoNil and rhoConst.
3246      - rhoNil should only appear in the LINEAR equation of state, everywhere
3247        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3248        and the dynamical equations are all divided by rhoConst
3249    o introduced new parameter rhoConstFresh, a reference density of fresh
3250      water, to remove the fresh water flux's dependence on rhoNil. The default
3251      value is 999.8 kg/m^3
3252    o cleanup up external_forcing.F and external_forcing_surf.F
3253      - can now be used by both OCEANIC and OCEANICP
3254    checkpoint46h_pre
3255    
3256     Added code to convert surface volume flux (fresh water) into
3257     a mass flux when using P coordinates in the ocean (OCEANICP).
3258     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3259    
3260    checkpoint46g_post
3261    o Include a new diagnostic variable phiHydLow for the ocean model
3262      - in z-coordinates, it is the bottom pressure anomaly
3263      - in p-coordinates, it is the sea surface elevation
3264      - in both cases, these variable have global drift, reflecting the mass
3265        drift in z-coordinates and the volume drift in p-coordinates
3266      - included time averaging for phiHydLow, be aware of the drift!
3267    o depth-dependent computation of Bo_surf for pressure coordinates
3268      in the ocean (buoyancyRelation='OCEANICP')
3269      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3270        Theta, Salinity, and Pressure in the parameter list. This routine is
3271        presently contained in find_rho.F. This routine does not give the
3272        correct density for 'POLY3', which would be a z-dependent reference
3273        density.
3274    o cleaned up find_rho
3275      - removed obsolete 'eqn' from the parameter list.
3276    o added two new verification experiments: gop and goz
3277      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3278    checkpoint46g_pre
3279    
3280    checkpoint46f_post
3281    o Enable tangent linear (forward mode) gradient checks:
3282      - extended active file handling to g_... files
3283      - added TANGENT_SIMULATION to theSimulationMode
3284      - extended grdchk package accordingly
3285    o added tangent linear setup in verification/carbon/code_ftl
3286    o added adjoint setup in verification/front_relax/code_ad
3287    
3288    checkpoint46e_post
3289    o Added new equation of state -> MDJWF
3290      - EOS of McDougall et al., 2002, JAOT, submitted
3291      - caveat: the equation of state is only valid for a smaller (more
3292        realistic?) range of values than JMD95P/Z and UNESCO
3293      - added masks to the calculation of pressure in store_pressure
3294      - added more check values for density in check_eos (ini_eos.F), some of
3295        the old check values are out of the range of the MDJWF-eos, so don't
3296        expect perfect matches for those
3297    checkpoint46e_pre
3298    
3299    checkpoint46d_post
3300    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3301      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3302      case of pressure coordinates. eosType='JMD95Z' in
3303      combination with buoyancyRelation='OCEANICP' now causes an error.
3304    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3305      in find_alpha/beta.
3306    checkpoint46d_pre
3307    
3308    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3309      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3310    
3311    checkpoint46c_post
3312    o Changes necessary for ocean in p-coordinates
3313     -  Added new buoyancy relation = 'OCEANICP'
3314     -  Added new parameters = gravitySign (this used to be contained inside
3315        the factor dRdZ which I added when we first switched to R coordinates).
3316     X GM/Redi is not compatible (yet)
3317     X bottom drag and no-slip need to be debugged.
3318    checkpoint46c_pre
3319    
3320    checkpoint46b_post
3321    o Added new equation of state -> JMD95Z and JMD95P
3322      - EOS of Jackett and McDougall, 1995, JAOT
3323      - moved all EOS parameters into EOS.h
3324      - new routines ini_eos.F, store_pressure.F
3325    o Added UNESCO EOS, but not recommended because it requires
3326      in-situ temperature (see JMD95)
3327    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3328      unesco.f to be used with POLY3
3329    checkpoint46b_pre
3330    
3331    checkpoint46a_post
3332    o Added (atmospheric) pressure loading
3333      - new field in FFIELDS.h, etc...
3334      - new cpp flag ATMOSPHERIC_LOADING
3335    o Changed hFacC to _hFacC in calc_phi_hyd.F
3336    o Added SHORTWAVE_HEATING to some files for consistency
3337    checkpoint46a_pre
3338    
3339    checkpoint46
3340    further merges from release1_p5
3341    o new ctrl package
3342      - adopted from ECCO environment to enable optimization
3343      - added Eliassen Palm fluxes to controls
3344    o added Eliassen Palm flux controls to gradient check package
3345    o cost package
3346      - Compatible with new ctrl package
3347      - added Eliassen Palm cost hooks
3348      - modif's of existing cost functions
3349    o Adjoint-related bug fixes in kpp:
3350      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3351      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3352    o autodiff package
3353      - flow directives:
3354        + new for S/R do_the_model_io
3355        + enhanced for S/R checkpoint
3356        + new gmredi.flow
3357      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3358        disable adcommon.h/g_common.h by default.
3359      - fixed problem for adjoint of global_max
3360    o modified verification/carbon/
3361    o New setup for adjoint of global_ocean
3362    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3363    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3364    o incorporated hooks for sponge layer code (external_forcing.F)
3365    
3366    checkpoint45d_post
3367    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3368    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3369      (affects plume_on_slope "cg2d" output)
3370    o add new parameter deltaTfreesurf for free-surface time stepping
3371    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3372    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3373    o change phiMin in exp1 (to agree with documentation)
3374    o add new flags:
3375     - T,S forcing inside/outside Adams-Bashforth
3376     - turn off temp,salt advection and/or forcing
3377     - for each tracer, define internal flag for multiDimAdvection & A-B
3378    o monitor: change definition of KE to check conservation of Energy
3379    
3380    checkpoint45c_post
3381    o Removed f90 comments ("!")
3382    o Modified initialisations to enable exf package for MITgcm
3383      (without invoking ECCO_PACKAGE).
3384    o modifications to gradient check package (Martin Losch)
3385      - enable centered differences
3386      - modified format of standard output
3387    
3388    checkpoint45b_post
3389    o cleaned exchange calls in cg2d
3390    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3391    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3392      to configure barotropic setup (Martin Losch)
3393    o moved some initialisations within bi,bj loop in dynamics
3394      (TAF flow dependency)
3395    o in initialise_varia, moved call packages_init_variables
3396      before convective_adjustment_init
3397      (corresponding adjustment of TAF tape initialisation).
3398    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3399    
3400    checkpoint45a_post
3401    o compute Rho over the whole domain (extend iMin,jMin indices)
3402    o specific exchange for X-slice domain (case Ny=1)
3403    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3404    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3405    
3406    checkpoint44h_post = checkpoint45
3407    o Fix to restore differentiability:
3408      place at which packages_init_variables is called in
3409      initialise_varia is crucial for reverse control flow.
3410    o modifications in GMRedi to enable stable adjoint
3411      (corresponding modif's in thermodynamics, dynamics)
3412    o added missing hook for sponge layer code in external_forcing
3413    o modified test cost functions
3414    o storing in gad_advection (plus removal of write(0,*)!
3415    o missing headers TR1.h added in convective_adjustment routines
3416    o errorMessageUnit set non-equal zero in eeboot
3417      (conflict on some platforms, e.g. IBM SP3)
3418    o modified carbon verif.
3419    
3420    checkpoint44h_pre
3421    o vertical grid option: allow to put the Interface at the middle between
3422      2 cell-centers ; replace delZ in pkg/kpp by drF.
3423    o GM Advective form: Tracers are advected using the residual transport (=
3424      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3425    
3426    checkpoint44g_post
3427    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3428      results) ; ifdef missing in thermodynamics.F
3429    
3430    checkpoint44f_pre,checkpoint44f_post
3431    o added PTRACERS package
3432      This allows an arbitrary number of passive tracers to be integrated
3433      forward simultaneously with the dynamicaly model.
3434      + Implemented so far:
3435        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3436        - I/O and checkpointing
3437        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3438      + Not implemented so far:
3439        - KPP
3440        - OBCS
3441      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3442        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3443        line in data.pkg.
3444      + This package is disabled by default since it increases storage.
3445    
3446    
3447    o testscript: added -cleanup option
3448    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3449                 b) enable to filter 2D fields.
3450    
3451    checkpoint44e_pre,post
3452    o re-wrote convective adjustment to use pre-calculated weights
3453      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3454      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3455      Original calls to convect() still in place.
3456    
3457    chkpt44d_pre,post
3458    o added missing EXCLUDE_MONITOR flags
3459    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3460      (incompatible typ in MIN/MAX expressions caused problems
3461      on IBM SP3)
3462    o in genmake added variable MAKEDEPEND
3463      plus resetting for case SunOS
3464    o added timer_stats.c routine for IBM SP3
3465    o removed variables in dynamics
3466    !!! I forgot to create tag chkpt44d_pre !!!
3467    !!! But chkpt44d_pre = chkpt44c_post    !!!
3468    
3469    o real fresh water flux implemented with non-linear free-surface.
3470    
3471    chkpt44c_pre,post
3472    o few fix (mask in shap_s2, EmPmR in external_field_load,
3473      USE_NATURAL_BCS in solve_for_P);
3474    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3475    
3476    checkpoint44b_pre/_post
3477    o merge of relevant stuff from the ecco-branch:
3478      - genmake: removed $S64 overwrite for case SunOS
3479      - pkg/exf: update and corrections for field swapping and obcs
3480      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3481                  harmonized between ECCO and MITgcm
3482      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3483                      updated checkpointing_lev... lists for obcs
3484      - model/src: minor changes in forward_step, plot_field
3485                   added directive for divided adjoint in the_main_loop
3486      - pkg/mdsio: added mdsio_gl_slice
3487    
3488    o check parameters & config (chkpt44a_pre,post)
3489    o OBC and NonLin_FrSurf.
3490    
3491    checkpoint44
3492    o fix bug in mom_vi_del2uv
3493    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3494    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3495    o update AIM experiments (NCEP input files)
3496    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3497    o added some stuff for AD
3498    
3499    checkpoint43
3500    o added two new advection tests
3501    o added global 4x4 degree ocean test
3502    o added test of H&S94 with free surface on cube
3503    o some final mods for gradient check, adjoint,...
3504    
3505    checkpoint42
3506      Fixed AD-related problems:
3507    o Store directives up-to-date with re-arranged Adams-Bashforth
3508      (mainly thermodynamics.F)
3509    o New store directives for multi-dim. advection schemes
3510      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3511      * new common block and key passkey
3512      (mainly gad_advection.F)
3513    o Modified store directives for split of dynamics/thermodynamics
3514      for the case ALLOW_KPP
3515    o Cleaned argument list for timestep_tracer.F
3516    
3517    checkpoint41
3518    o re-formatted/added comments in prologues of key subroutines
3519      to work with protex
3520    
3521    checkpoint40
3522    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3523    o added FLT (floats) package from Arne along with demo. experiment
3524    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3525      implementation of forward-in-time forcing terms
3526    o more mods for non-linear free-surface including new variable
3527    o modified multi-dim method to work on cube
3528    o bug fix in KPP (from DM)
3529    
3530    checkpoint40pre9
3531    o added DST advection schemes
3532    o fix MPI bug on SGI's
3533    o modifications for non-linear free-surface
3534    o fixed conditionals for fixed flow/passive tracer only mode
3535    o added tension/strain form of stress tensor
3536    o changes to commenting of arguments for TAF/TAMC
3537    o added/updated many matlab scripts
3538    o added multi-dimensional advection method for tracers
3539      
3540    checkpoint40pre8
3541    o new package rw/
3542      Added method for dumping intermediate local arrays:
3543      mdsio_writetile - same as mdsio_writefield except works from inside
3544                        bi,bj loop
3545      mdsio_writelocal - same as mdsio_writetile except works for local
3546                         arrays
3547      write_local_r? - higher-level wrapper for mdsio_writelocal
3548      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3549      Example given at end of mom_vecinv.F that dumps some local arrays.
3550    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3551      control flux-form versus vector invariant code.
3552      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3553      or genmake -DISABLE ...
3554    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3555      (additional storing is now needed for case vecinv;
3556      currently nothing implemented to switch this storing off
3557      in case fluxform is used since no CPP flag available).
3558    
3559    checkpoint40pre7
3560    o bug fix in dynamics.F
3561      calc_viscosity called before k=1,Nr loop.
3562    o added some #ifdef's ALLOW_PASSIVE_TRACER
3563    o cleaned initialisations in ctrl_map_ini
3564      related to TAF
3565    
3566    checkpoint40pre6
3567    o split dynamics into thermodynamics & dynamics
3568    o corresponding split of calc_diffusivity into
3569      calc_diffusivity, calc_viscosity
3570      (kpp_calc_diff, kpp_calc_visc).
3571    o Added diffkr, kapgm to control variables
3572    o bug fix in gmredi_slope_limit for ldd97
3573    
3574    checkpoint40pre5
3575    o proper initialization of Adams-Bashforth time stepping
3576      + uses forward step for very first step of model (iter=0)
3577    o re-generated *all* output since almost all output is modified by this
3578      change (sorry but we've been putting this one off for about 2 years)
3579      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3580        *not* regenerated since they are already out of date and I don't
3581        want to create the impression that they are suddenly working.
3582    o removed KAP stuff for DEC's
3583    o modified/added many .cvsignore files in */code and */input
3584    o added new expt "solid-body.cs-32x32x1"
3585      + this uses an alternative form of ini_curvilinear_grid.F which
3586        is not necessarily any better than the current one...
3587    
3588    checkpoint40pre4
3589    o added re-initialisations of utrans,vtrans,rtrans in
3590      calc_common_factors which are crucial for TAF.
3591    o extended iMin,jMin range for calc_common_factors,
3592      calc_diffusivity
3593    o added option ALLOW_PASSIVE_TRACER
3594    o a few minor updates and fixes
3595    
3596    checkpoint40pre3
3597    o created calc_gtr1.F for gad package
3598    o split the_main_loop and re-introduced forward_step
3599    o some recomputations of nIter0 for TAMC
3600    
3601    checkpoint40pre2
3602    o Updated to latest branch of AJA, JMC
3603    o Added gradient check package
3604    o Added routines for passive tracer handling
3605    o Added carbon sequestration sensitivity experiment
3606    
3607    checkpoint39
3608     o Modifications and fixes to support TAMC
3609       (mainly missing or wrong directives)
3610     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3611       in addummy_in_stepping
3612     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3613     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3614     o Included following packages:
3615       cal: calendar
3616       exf: external forcing
3617       ecco: essential routines to control use of cal, exf
3618             (NB: this is not the full ECCO environment)
3619     o disabled some packages by default in genmake
3620    
3621    checkpoint38
3622     o see notes_c37_adj.txt
3623     o corrected wrong layer index in external_forcing_t
3624     o replaced the_main_loop/forward_step by the_main_loop
3625     o removed forceoutput from write_state
3626       (replaced criteria for initial/final state)
3627     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3628    
3629    checkpoint37
3630     o mdsio.F routine split and packaged in pkg/mdsio
3631       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3632        used unless genmake -disable=mdsio)
3633     o allow a more precise surface-geopotential gradient for the atmosphere
3634       taking into account the change in space of Alpha (=1/rho) at the surface.
3635     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3636       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3637     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3638       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3639       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3640     o Time-Average diagnostics defined as a pseudo package "timeave".
3641     o pickup files : old pickup (before c35) did not work with new code (c35
3642       and after) unless activating 2 commented lines in initialise-varia.
3643     o Non-Hydrostatic pickup file Pb fixed.
3644     o bug with Rigid-lid version (since c35) fixed.  
3645    
3646    checkpoint36
3647     o implement Crank-Nickelson barotropic time-stepping
3648     o recover Time-Average diagnostics
3649     o fix Pb in checkpoint (PR#19)
3650     o AIM become a standard package ; clean unused CPP_kees
3651    
3652    checkpoint35
3653     o subtantial rewrite of dynamics.f
3654     o allows staggered time-stepping
3655     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3656     o added bottom drag (linear + quadratic)
3657    
3658    checkpoint34
3659     o Modified exchange routines for correct reverse simulation.
3660     o Added verification output to comply with bug fix in impldiff.F
3661       as of c33 (exp2, natl_box).
3662     o Corrected store directives in dynamics.F
3663     o Corrected array boundaries in impldiff.F
3664     o Corrected array dimensions in gmredi.
3665       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3666     o Added routine GLOBAL_SUM_INT to global_sum.F
3667     o Added mdsio_gl.F for ECCO purposes.
3668    
3669    checkpoint33
3670     o Fixed bug in lower BC in impldiff.F
3671     o Fixed confusion about units of forcing arrays in FFIELDS.h
3672       namely Fu,Fv,Qnet,Qsw,EmPmR:
3673       - Removed verification/natl_box/code/external_fields_scale.F
3674         (did not differ from that in model/src)
3675       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
3676         (see FFIELDS.h for description)
3677       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
3678         kpp_calc.F and kpp_transport_t.F
3679       - Removed model/src/external_fields_scale.F and calls to it
3680       - verification/natl_box uses flux data with "atmospheric" sign so
3681         a special version of external_fields_load.F is used to
3682         change the data as it's read in. This way, the arrays
3683         have the right units and signs at all times tha a user could
3684         possibly use them.
3685     o Corrected genmake to delete a temporary file during configuration
3686    
3687    checkpoint32
3688     o Scaling of forcing fields moved from external_forcing.F to
3689       external_fields_scale.F, called directly after loading fields.
3690     o Surface relaxation terms added to surface tendency fields in
3691       extra subroutine.
3692     o impldiff.F changed to avoid storing by TAMC of huge intermediate
3693       fields.
3694     o Changes in GMRedi to comply with packaging structure.
3695     o Modifications and bug fixes in KPP package.
3696     o Verification experiment for KPP added (verification/nat_box/)
3697    
3698    checkpoint31
3699     o Packages interface brought in line with defined standard
3700       -> new routines packages_...F
3701       -> changes in initialise_fixed.F, initialise_varia.F
3702       -> enables initialisation interface for ECCO package
3703     o Rescaling of external forcing fields immediately after read
3704       (removed from external_forcing.F)
3705       -> new: surface_fields_scale.F
3706       -> affects ini_foorcing.F, external_fields_load.F
3707     o Computation of surface tendencies before tendency updates.
3708       -> new: external_forcing_surf.F
3709     o Change of variable names useGMRedi, useKPP, useECCO
3710     o Further changes in dynamics.F, impldiff.F for TAMC
3711     o Tested for experiments 0, 2, 4.
3712       - not yet tested for GMRedi.
3713       - not yet tested for KPP.
3714    
3715    checkpoint30
3716     o Updates for OBCs
3717     o New experiment for test OBCs (internal_wave)
3718     o New output.txt in verification/exp4/results/
3719     o Updates for KPP: calculation of viscosity corrected, new variables
3720       kpp_dumpFreq and kpp_taveFreq
3721     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
3722       and entry for T90 in genmake
3723    
3724    checkpoint29
3725     o packaged KPP and GM/Redi
3726    
3727    checkpoint28
3728     o Corrected initialization of hFacMin for difference vertical coordinates
3729     o Modified calculation of partial cell thickness to more robust algorithm
3730     o config_summary.F: replaced write_1D_... by write_0D_...
3731       read_write.F: added subroutines write_0D_...
3732     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
3733       included some initialisations required for TAMC.
3734     o routine calc_isoslopes: modified sqrt computation to make it
3735       differentiable for zero argument.
3736     o routines dynamics, impldiff:
3737       included store directives and tape key computations required for TAMC.
3738     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
3739    
3740    checkpoint27
3741     o fixed calc_isoslopes() to so that cancellation of terms in tensor
3742       formulation works properly with variable resolution.
3743     o restructured the calling tree between the_model_main() and dynamics()
3744     o split initialise() into initialise_fixed() and initialise_varia()
3745     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
3746       in new routine ini_psurf()
3747    
3748    checkpoint26
3749     o moved some #ifdef in optional routines to encompass everything
3750       except the argument declarations. This was using up some memory.
3751     o fixed macros like _ADT to work with both versions of Linux cpp
3752     o cleaned up some unused and uninitialized variables
3753       (helps when debugging with strict compile options)
3754     o split up CPP_EEOPTIONS.h into options and macros
3755       (macros are now in eesupp/inc/CPP_EEMACROS.h)
3756     o patch for 2 processor JAM mode
3757    
3758    checkpoint25
3759     o updates for OBCs and NH
3760     o dramatically reduced memory usage
3761     o added "JAM" routines for use on Artic network
3762     o parameterization of convection by implicit vertical diffusion
3763     o added a diagnostic of convective index
3764     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
3765       (this is was partly for OBCs and NH but also in anticipation of
3766        an explicit free-surface option)
3767     o initial state input files for U and V
3768    
3769    checkpoint24
3770     o Removed some spurious "REAL"s
3771     o Updated KPP to latest version from JPL
3772     o Added a COS(latitude) in horizontal viscosity
3773    
3774    checkpoint23
3775     o Added del^4 diffusion for salt and temperature
3776     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
3777    
3778    checkpoint22
3779     o Made many small changes: implicit none, format(i5), etc...
3780     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
3781    
3782    checkpoint21
3783     o Introduced new I/O package that supports direct-access records (mdsio.F)
3784     o Split-up mid-level I/O routines
3785     o Updated input data for experiments 0,1,2,4 and 5
3786     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
3787    
3788    checkpoint20
3789     o Tidied up open-boundaries some more
3790     o Added non-hydrostatic code
3791     o Fixed some input data
3792     o Modified MPI start-up to work in "coupled" context.
3793    
3794    checkpoint19
3795     o Tidied up directory structure for verification experiments.
3796     o Added new code for open boundaries.
3797     o Corrected advective terms near boundaries.
3798     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
3799     o Implemented free-slip/no-slip BCs and del^4 dissipation.
3800     o Split default parameters out of ini_parms.F into set_defaults.F.
3801    
3802    checkpoint18
3803     o Further changes for optional code generation with
3804       CPP - ugh!
3805    
3806    checkpoint17
3807     o Beginning to incorporating modularity
3808       for supporting atmos. and ocean configs.
3809     o Small changes for TAMC complinace
3810     o New ultra simple test case. Barotropic box
3811       configuration "exp0".
3812    
3813    checkpoint16
3814     o Minor changes to exchange routines to support
3815       accumulation in reverse mode. Adjoint of an
3816       assignment is an addition.
3817     o Changes to support compilation by TAMC (LR(1)
3818       syntax) and by g77 under Linux ( 72 character
3819       limit ).
3820    
3821    checkpoint15
3822     Rewrote exchange routines to allow
3823     o General tile <-> tile connectivity.
3824     o TAMC reverse mode flag ( is this really needed? )
3825     o Variable width overlap and exchange region widths.
3826     o Hooks for sharing data via DMA, Arctic, Memory Channel,
3827       shmput/shmget, VIA, SYSV shmem and every other cool
3828       communication method.
3829    
3830    checkpoint14
3831     Consistent isomorphism chages made. These allow dynamical core
3832     to support both pressure and meters as a vertical coordinate.
3833    
3834    checkpoint13
3835     Release which corrects global_max problem and a couple
3836     of KGM time-averaging diagnostic errors. Also contains
3837     a double-gyre experiment setup as well as the baseline
3838     4 degree global template. The double gyre template is
3839     organised to allow it to be applied automatically to
3840     the baseline configuration.
3841    
3842    branch-point-rdot
3843     A few tidy-ups have been made bt the real point of this
3844     check-point (excuse the pun) is to allow a branch to be
3845     made for the purposes of adding the rDot alterations.
3846     I don't want to commit the rDot to the main-trunk until
3847     we've actually tested it...
3848    
3849    checkpoint12
3850     Tidy up and added generic genmake script (formerly
3851     configure script).
3852     Released to testers.
3853    
3854    checkpoint11
3855     Re-arranged initialise() and introduced ini_vertical_grid()
3856     and ini_masks_etc().
3857    
3858    checkpoint10
3859     Introduced the configure script.
3860     Separated out the diags package.
3861     Added template for writing time-averages of tile/intermediate quantities.
3862     Updated SIZE.h in exp2 and made the data big-endian.
3863    
3864    checkpoint9
3865     MPI fix. Filename changes (meta/data). salbin*y stuff.
3866     General tidy-up.
3867     SST.bin SSS.bin added to verification/exp2
3868    
3869    checkpoint8
3870     Inludes time-dependant forcing and time-averaging.
3871     Works at 4x4 and 2.8125x2.8125 global
3872    
3873    checkpoint7-4degree-ref
3874     Branch from checkpoint7. Released for application to
3875     global modeling and general modeling - process studies, regional
3876     model etc..
3877     Configured for verification/exp2 - 4 degree global, two process.
3878    
3879    checkpoint7
3880     Created by cnh
3881     Simple 4 degree global simulation
3882     configuration.
3883     Includes climatological wind,
3884     hydrography, bathymetry etc
3885     Does not include Heat Flux and E-P
3886    
3887    checkpoint6
3888     Created by cnh
3889     merged checkpoint5 with CD and
3890     spherical polar code.
3891     Still some problems with GM Redi
3892     abd full topography.
3893    
3894    checkpoint5
3895     Created by AJA
3896     contains updates to GM Redi
3897     and reordered timestepping loop
3898     for Implicit Diffusion.
3899    
3900    checkpoint4
3901     Created by cnh
3902     Contains memory saving macros ( _rdxc etc..) for when
3903     grid variations are limited.
3904     Contains polynomial coeffs for EOS and knudsen program
3905     for generation.
3906    
3907  checkpoint3  checkpoint3
3908   Created by cnh   Created by cnh
3909   Added extra flags for runtime options   Added extra flags for runtime options
# Line 20  checkpoint1 Line 3922  checkpoint1
3922   Restructured kloop in dynamics.F   Restructured kloop in dynamics.F
3923   Added non-linear EOS   Added non-linear EOS
3924    
3925  baseline - Original checked in code  baseline
3926     Original checked in code
3927    

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