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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.964 by mlosch, Fri Feb 29 01:31:34 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 change the loop ordering in most gad_*_adv_x.F to improve vectorization:
8      move a few statemens out the main loop into separate loops
9    o pkg/shelfice:
10      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
11        (kg/m^2/s), does not break tests, because in verification/isomip,
12        rhoConstFresh=rhoConst (by accident)
13      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
14      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
15        new file model/src/seawater.F, so that they are available for all pkgs.
16      - convert potential temperature into in-situ temperature. This changes the
17        isomip tests => update tests
18    o add a flag writePickupAtEnd (default=true) to be able to suppress
19      writing a pickup at the last timestep
20    o pkg/profiles:
21      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
22      (for "less than 32 characters name" compiler requirement)
23    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
24      conditions that have a different sampling frequency than S/T/U/V obcs
25    o pkg/diagnostics (stats-diags):
26      - fix global Min/Max in case 1 processor get only empty tiles
27    o genmake2: replace (4 times)
28         make genmake_tc_1.o >> genmake_warnings 2>&1
29      with
30         COMM="$CC $CFLAGS -c genmake_tc_1.c"
31         echo $COMM >> genmake_warnings
32         $COMM >> genmake_warnings 2>&1
33      to make genmake2 always see the value of CC as specified in the optfile.
34    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
35      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
36      - modify verification advect_cs test to test SOM-advection on CS-grid.
37    o pkg/ctrl:
38      - Rewrite of ctrl_map_ini_ecco.F,
39        introducing a generic routine (ctrl_map_ini_gen.F).
40      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
41    
42    checkpoint59n
43    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
44      number in dedicate array "hdiag":
45      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
46        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
47      - many small changes (integer format) for large number of diagnostics
48      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
49        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
50    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
51      usingSphericalGrid, this allows to define the rotated grid coordinates
52      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
53      geographical coordinates according to the inverse of the rotation defined
54      by the Euler angles, so that Coriolis parameter and online-interpolation by
55      exf works with the geographical coordinates on XC/YC/XG/YG.
56      Naturally, this feature does not work with all packages, so some
57      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
58      profiles), because there the coordinates are assumed to be regular
59      spherical grid coordinates.
60    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
61      - introduce isopycnal diffusion coefficient control.
62    o tools/adjoint_options:
63      - additional control vector components.
64    o pkg/mnc: have mnc create marginally meaning full coordinate variables
65      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
66    o pkg/mypackage:
67      - add example of read/write pickup for state-var ;
68      - add entry points to the main code for state-vars diags & write-pickup.
69    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
70      transitions for useExfYearlyFields
71      - add new subroutine that determines the file to read from for
72        use*YearlyFields = .TRUE. and .FALSE.
73      - add a verification experiment to global_with_exf that tests
74        useExfYearlyFields with USE_EXF_INTERPOLATION defined
75    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
76      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
77      subroutines (which could be generated from a template, because they are
78      almost identical), for now they are included in obcs_prescribe_read.F for
79      simplicity
80    o pkg/exf:
81      - add a little more diagnostic to exf_interp_read (in analogy to
82        mds_read_field, can be turned off with debugLevel < debugLevA=1)
83      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
84        ugly but fast by unrolling short inner loops, inserting a unroll=8
85        directive in routine lagran, and splitting a loop and making do while the
86        outermost loop (the latter requires the intoduction of index arrays)
87    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
88    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
89      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
90    o verification/seaice_obcs: updated for restart test and latest options
91    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
92      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
93      for now this is only available for the C-grid code and also within
94      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
95    
96    checkpoint59m
97    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
98      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
99    o gad_som : fix flux output (& diagnostics) to have same units as other  
100      advection scheme fluxes (was previously multiplied by deltaT).  
101    o added verification/seaice_obcs both to test seaice open boundaries
102      and to provide an example matlab scrpt for generating them
103    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
104    o pkg/salt_plume: clean up salt_plume_frac.F to
105      remove redundancy in PlumeMethod 1 and 4
106    o pkg/kpp: added saltplume diagnostics
107    o pkg/obcs and pkg/seaice:
108      - do not set uice and vice to zero when OB*icefile are unspecified
109      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
110      - moved seaice tracer obcs after call to seaice_growth
111    o pkg/salt_plume: added various options for salt plume depth
112      criterion and for vertical distribution of the salt
113    
114    checkpoint59l
115    o pkg/ptracers: new version of ptracers pickup:
116      read meta file and write only fields which are needed to restart.
117      ( same logic as main pickup file ; also using pickupStrictlyMatch )
118    o pkg/seaice:
119      - add timescale for melting due to warm mixed layer as a means of
120        setting SEAICE_availHeatFrac more conveniently
121      - add a CPP-flag/runtime parameter check for flooding algorithm
122      - reformulated availHeat in seaice_growth.F to be independent of AREA
123    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
124      unit changes
125    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
126    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
127      SX vector computer.
128    o pkg/seaice:
129      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
130        seaice forcing fields can now be read only through pkg/exf
131      - removed some unused halos
132    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
133    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
134      or U/VICE from U/VWIND before computing U/VSTRESS
135    
136    checkpoint59k
137    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
138      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
139    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
140      all experiments pass when compile with un-initialised var. checking option.
141    o added pkg/salt_plume
142    o script to test restart (for now, in MITgcm_contrib/jmc_script)
143    o pkg/seaice: new read/write pickup version.
144      read meta file and write only fields which are needed to restart.
145      ( same logic as main pickup file ; also using pickupStrictlyMatch )
146    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
147    o lab_sea.hb87: modify the domain & update output.hb87.txt :
148      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
149      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
150      process. Fixed here by closing the domain at the Northern boundary.
151    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
152    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
153      a set of consecutive levels in/from a 3-D array.
154    o pkg/ptracers:
155      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
156      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
157    
158    checkpoint59j
159    o in pkgs: dic, obcs, offline, rbcs:
160      standard way to compute coeff. for time interpolation between 2 time reccords
161      which retains full precision (& make results less dependent on compiler).
162      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
163    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
164      packages instead of reading ice cover and wind speed separately
165    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
166     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
167      to allow to compile customized code before the update)
168    o cleaning-up:
169      - fix CPP instruction syntax in pkg/obcs
170      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
171        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
172      - fix some threads issue in IO parts.
173    o pkg/dic:
174      - add tons of "_d 0" (--> much better testreports !)
175       and then update outputs of tutorial_global_oce_biogeo
176    o pkg/mom_fluxform:
177      add a special version of momentum advection intended to conserve momentum
178      next to a bathymetry step or a coastline edge. (default = off = #undef)
179    o new read/write pickup version:
180      - for now, only implemented for main (mdsio) pickup file.
181      - write out only what is needed to restart; merge pickup_nh , pickup_ph
182        and main pickup together.
183      - read meta file; read only what is needed to restart; stop if a field
184        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
185        if it make sense (even if the restart is not perfect).
186      - if no meta file, assume that pickup to read corresponds exactly to
187        a pickup that would currently be written.
188      - read pickup written in the old format (until checkpoint59i) if it
189        recognizes an old meta file (no field-list).
190      - add a meta file in exp. which starts from a pickup: 2 cases:
191        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
192         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
193        b) a meta file describing the content of the associated pickup file
194         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
195    o pkg/mdsio & pkg/rw:
196      - new routine to read a meta file ; new set of routine to read
197        Multiple-fields file (with meta file).
198    o added open boundary conditions capability for seaice
199        HSNOW, HSALT, UICE, and VICE
200    
201    checkpoint59i
202    o adjoint:
203      * fix multiDimAdvection adjoint
204        (partial recomputation problem by TAF for fVerT(:,:,kDown)
205        and comlev1 size definition (maxpass vs. max. number of tracers)
206      * verification/global_ocean.90x45x15 adjoint now tests
207        NLFS and multiDimAdvection using DST3 (=30)
208      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
209    o pkg/kpp: add "_d 0" to real constant (if missing);
210      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
211      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
212    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
213      for internal parameters related to restart process (formerly from PARAMS.h)
214      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
215    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
216      as argument. (only atm2d & obcs write_pickup have not yet been updated)
217    o pkg/monitor:
218      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
219      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
220      - account for deep Atmosphere factor and density factor (anelastic)
221    o added open boundary conditions capability for seaice HEFF and AREA
222    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
223      thermodynamics
224      - requires a little reorganization, which affects the testreport results
225        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
226        so that now the conservative form is tested
227      - add a few comments
228    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
229    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
230    o add new diagnostics to seaice: advective, diffusive fluxes (only for
231      multidim-advection, for scheme 2 they are not filled) and transports,
232      thermodynamic growth rates
233    o change units of EmPmR (inside the code, + within coupling interface)
234      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
235      Affects results @ truncation level (cg2d match) and update output of
236       experiments: lab_sea(6), global_ocean.90x40x15(10),
237      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
238      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
239      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
240      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
241    
242    checkpoint59h
243    o pkg/exf:
244      - improve vectorization by moving if-statement out of loops in
245        exf_mapfields, exf_radiation
246      - exf_bulkformulae.F: introduce 2D fields and vectorize code
247    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
248    o testreport:
249      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
250        monitor & update offline_exf_seaice exp. output.
251      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
252    o pkg/seaice:
253      - bug fix in the evp solver: boundary conditions were affected be
254        masking of zMax/zMin (changes results)
255      - minor bug fix in boundary conditions in seaice_calc_strainrates
256        (changes results for no_slip)
257      - seaice_lsr.F: make interpolation of eta dependent on boundaries
258      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
259      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
260        stress formulation and no-slip boundary conditions
261    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
262      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
263    o pkg/seaice: a first HSALT time stepping equation has been checked in
264    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
265      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
266      without requiring DO-IF statements
267    o pkg/thsice:
268      use continuous power-law function for partition of energy between lateral
269      melting/freezing and thinning/thickening ; old code using step function
270      still available with #undef THSICE_FRACEN_POWERLAW
271      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
272    o testreport: change AD testing : check against results/output_adm.txt
273      using same scripts as for forward test.
274    
275    checkpoint59g
276    o adjoint testing: in preparation for changing testreport:
277      - output format: cost and grad written on separated lines
278      - ad output results in directory "results" (instead of "results_ad")
279    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
280    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
281    o pkg/ecco: allow user defined cost function contributions
282    o testreport:
283      Allow to choose (per experiment) the list of tested output variables
284       and the main variable (used to issue a pass/FAIL ) ;
285      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
286      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
287      Also modify printing of summary:
288       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
289       b) echo the list of tested variables in the individual summary.txt of
290          each experiment.
291    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
292      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
293      (but still depend on the tile decompostion of the domain).
294    o pkg/seaice: change a discretization detail to make the B-grid code
295      "more symmetric". This change is likely to remove all "ridges/leads" that
296      where quasi-aligned with the grid in B-grid solutions. It may also be
297      the solution to the stress coupling issues with the B-grid.
298    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
299      remove .cvsignore from input dir. (since testreport no longer run here).
300    o pkg/thsice:
301     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
302     - fix reshaping of sea-ice just after advection:
303       melt all the ice only if ice-volume is too small.
304     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
305       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
306     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
307    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
308      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
309    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
310      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
311      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
312      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
313      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
314      -> update output.txt
315    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
316     this affects truncation error: -> update output.txt of exp:
317      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
318      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
319    
320    checkpoint59f
321    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
322    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
323      a bounded range (in forward mode)
324    o pkg/ecco, ctrl, autodiff and mom_common:
325     internal parameter controls, completements of implementations
326    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
327    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
328      (not seem any difference in testing results).
329    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
330       at face corners.
331    o pkg/generic_advdiff:
332     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
333      loop range indices for computing vertical advection tendency
334      and do the calculation in the interior only (no overlap) ;
335      for now, only implemented for SOM advection (to save CPU time).
336     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
337    o exch2 adjoint
338      First set of changes:
339      - add exch2 hand-written adjoint templates
340      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
341        This will require cleanup in pkg/autodiff/*.F
342        (changed routines currently kept separate in verif. code/)
343      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
344        that used to hide exch2 or cubed-sphere specific code
345        (commented via 'cph-exch2')
346    o pkg/seaice
347      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
348    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
349       output of global_ocean.cs32x15.thsice .
350    
351    checkpoint59e
352    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
353      for B-grid vector (not yet tested) and C-grid vector (<- only used
354      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
355    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
356      (#ifdef ALLOW_SALT_PLUME)
357    o gather_2d/scatter_2d: removed halo regions
358    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
359      scheme and the corresponding test case (under front_relax dir). For now,
360      only available with Skew-flux form and not yet tested in realistic set-up.
361      adjoint: store directives updated, but gradient checks deteriorated,
362      so maybe GM/Redi adjoint is now broken.
363    o seaice adjoint
364      * add AREA, HEFF, HSNOW as control variable
365        (should not change lab_sea results)
366      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
367    o pkg/seaice:
368      * added computation of saltFlux in seaice_growth;
369        For time being, sea ice salinity is assumed constant
370        contribution of snow flooding to freshening of sea ice is neglected.
371        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
372        defaults to 0.0 in order to maintain backward compatibility.
373        Typical values for SEAICE_salinity are 4 to 10 g/kg.
374      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
375      * added SEAICE_availHeatFrac, which specifies fraction of surface level
376        heat content used to melt or grow ice
377      * commented out cap of HICE: it helps keep ice thinner
378      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
379      * applied OBCS T/S mask to HEFFM sea ice mask
380    
381    checkpoint59d
382    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
383     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
384     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
385    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
386     and change default value of parameter "GM_Small_Number";
387     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
388       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
389       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
390    o pkg/ecco: cost function when applying pkg/smooth to controls
391    o pkg/ctrl: add forcingPrecond run time parameter
392    o pkg/seaice:
393     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
394     - fix bug in metric terms of u-equation in LSR solver (implicit part),
395       changes verification/lab_sea
396     - rearrange implicit part of u-equation in LSR solver to make it easier to
397       read, understand, and debug. This causes changes at the truncation level.
398     - fix (serious) bug in the boundary conditions (sign error in the implicit
399       part) of the LSR solver. Changes all LSR results.
400     - fixed problem with HSNOW initialization to avoid thick snow when AREA
401       is initilized with small values - does not change lab_sea results.
402     - added HsnowFile initialization capability
403    o pkg/smooth: addition to model/src and pkg/ctrl so allow
404     initialization of pkg/smooth and application to control vector
405    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
406    o dependencies: pkg/profiles requires pkg/cal
407    o pkg/profiles:
408     - added option ALLOW_PROFILES_GENERICGRID
409         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
410         that interpolation information (grid points and coefficients) is provided
411         within the netcdf input files.
412         -> sample matlab scripts can be found in MITgcm_contrib/gael
413         that allow you to prepare netcdf input files.
414     - also modified: cleaner include statements, cleaner error print statements,
415       cleaner stops when error, and more tests of the netcdf input files consistency.
416    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
417    o pkg/seaice:
418     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
419       requires a new routine: seaice_diagnostics_fill.F
420     - make sure that seaice does not move if not forced (pressure replacement
421       method, Hibler and Ip, 1995), changes results
422     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
423     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
424       It is turned off by default (=-1.), because it changes the results.
425     - make it possible to read AREA from a file, too.
426    
427    checkpoint59c
428    o add S/R and diagnostics for oceanic mixed-layer depth
429    o move GMRedi call after all vertical mixing schemes (including KPP)
430    o pkg/thsice:
431     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
432      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
433    o pkg/obcs:
434     - bug fix for balance code
435    o pkg/seaice:
436      - allow values of SEAICE_elasticParm > 1
437      - add new parameter SEAICE_evpTauRelax as an alternative
438        to SEAICE_elasticParm
439      - make lsr boundary conditions free slip (by default), changes result
440      - add code for no slip boundary conditions for lsr
441      - set minimum of zeta to zero (and not 4e8) (changes results)
442      - add a cap on AREA after advecting AREA if seaice_growth is not called
443    o change calculation of Visbeck K:
444      - no longer depend on tapering scheme; instead, compute slope (limited
445        by GM_maxSlope). this is equivalent to what was comuted before with
446        clipping or linear tappering.
447      - fix vertical averaging (wrong by 1/2 level)
448      - leave the old version (but will not be maintained) within
449        #ifdef OLD_VISBECK_CALC / #endif
450      - update output of exp. ideal_2D_oce
451    o change error catch in calc_r_star to improve vectorization
452    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
453      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
454    o adjoint:
455      Re-organized adjoint checkpointing according to Matt Mazloff
456      (but with modifs/completions/cleanups)
457      Storing is now bundled into large arrays to optimized I/O
458      (and second step in cleanup of the_main_loop)
459    
460    checkpoint59b
461    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
462      - export/import (between ocean & coupler) fields needed for ocean DIC.
463    o pkg/seaice:
464      - get rid of three more exchanges seaice_calc_viscosities (required
465        different loop boundaries in seaice_lsr and seaice_ocean_stress)
466      - bug fix in seaice_ocean_stress (update of lab_sea required)
467      - reduce loop boundaries to necessary minimum also in seaice_evp
468      - go back to the old way of computing deltaC/Z as the adjoint likes that
469        better
470    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
471      passive tracer to an Age Tracer) + update output.txt
472    o pkg/exf:
473      - implement A-grid / C-grid selection for wind-stress input files.
474      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
475      for now, in exf_bulk_largeyeager04.F only :
476      - change implementation for case where windspeed + 2. components wind-stress
477        are read-in. AND use rhoConstFresh to convert evap.
478    o pkg/seaice:
479      - use correct EXCH_UV for wind-forcing (on A-grid).
480      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
481        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
482    o pkg/exf:
483      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
484      EXF_INTERPOLATION:
485      - merge global_with_exf/code version of exf_interp_read.F
486        to the main code ;
487      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
488        reading the file ; Important: This options needs to be defined to recover
489        previous code.
490        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
491      - no longer loose real*8 precision along the way when using exf_iprec=64.
492    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
493      - change discretisation of evp-solver in order to avoid another exchange
494        (changes lab_sea) and clean up a little
495      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
496        help the adjoint (this also changes the results slightly)
497      - add a few "_d 0" where they had been missing in seaice_evp.F
498      - cleaning up: remove unused seaice_calc_rhs.F
499    o pkg/exf: some cleaning-up:
500      - change various "constants" into runtime parameters
501      - cleaned-up Large&Yeager04 routine which should eventually
502        replace exf_bulkformulae.F (changed names of S/R and CPP)
503        and merged various ALLOW_ATM_WIND options
504     only used with thsice pkg (in thsice_get_exf.F):
505      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
506        which are used when useStabilityFct_overIce=TRUE (= the default)
507      - change default values of ice & snow emissivity and scale downward LW
508        by ice & snow emissivity.
509    o pkg/thsice:
510     fix few little problems, in thsice_calc_thickn.F:
511      - growth vertically (and not laterally) if iceFrac == iceMaskMax
512      - melt only laterally if hIce < hThinIce (as the comments say)
513      and in thsice_extend.F:
514      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
515      - start to form ice as soon as the minimum ice-volume is reachable.
516     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
517      and cpl_aim+ocn
518    o pkg/kpp
519     - move computation of surface related input fields to KPP into a new
520       subroutine kpp_forcing_surf.F
521     - remove wrong (within bi,bj loops) EXCH calls.
522     - little cleaning (add argument myThid in last position, cvs header ...)
523     - for now, fix conservation problem by exchanging KPPviscAz (may not
524       be the best fix)
525    o pkg/seaice
526     - check for inconsistent evp parameter/cpp-flag combination
527     - remove leftover errIO flat for obsolete name list error handling
528    o OpenAD
529     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
530    
531    checkpoint59a
532    o pkg/seaice: some parameter clarifications and a little bit of clean up
533    o pkg/thsice: rename run-time parameters:
534       himin       -> hIceMin
535       himin0      -> hThinIce
536       hihig       -> hThickIce
537       i0          -> i0swFrac
538       transCoef   -> bMeltCoef
539       frac_energy -> fracMelting
540      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
541       with default values (for now) that do not change the results.
542      remove old version of thsice vars advection in pkg/seaice.
543    o in FFIELDS.h:
544      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
545      - make pLoad & sIceLoad always available (but still only used if
546         ATMOSPHERIC_LOADING is #define).
547    o pkg/kpp: replaced _KPP_RL with _RL
548    o bug fixes for vertical diffusivity computations when both KPP and
549        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
550        are no longer updating the vertical diffusivity array
551        (passed as argument) but are (re-) setting those arrays.
552    o pkg/seaice: fix bug in evp solver, while doing that
553      - change (improve?) discretization of stress computations for both
554        cgrid-lsr and evp solver
555      - add a new routine to compute strain rates
556      - the above changes lab_sea results
557      - add no slip conditions for evp solver (off by default), lsr-version
558        may follow
559      - fix exchange for shear at Z-points (does not change lab_sea)
560      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
561        (to force the user to pick a time step since there is not "safe" way
562        of choosing it)
563      - add principal stress diagnostics
564      - rearrange fields for evp a little to avoid having to call a: too many
565        exchanges and b: exchanges for stress trensor components which we do
566        not have.
567      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
568        of evp, complete rewrite for lsr case (latter is does not yet work
569        in all cases)
570    o pkg/kpp: add code to have mixing in shelf ice caverns
571      - add myThid to all kpp routines (long overdue)
572    
573    checkpoint59
574    o pkg/exf:
575      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
576        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
577      - move exf header files from lower_case.h to UPPER_CASE.h ;
578        add missing cvs Header & Name
579      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
580      - add namelist param. selectStressGridPosition, exf_monFreq
581      - retire many _CLIM routines, and remove data.exf_clim
582        + params moved to data.exf
583        + climsst, climsss now handled by exf_set_gen, i.e.
584          climss?period=0 refers to constant field,
585          climss?period=-12 to monthly forcing
586      - split up namelists in data.exf
587    o pkg/seaice:
588      - remove seaice_exch and seaice_exch_uv
589      - remove superfluous exchange of theta
590      - add myThid to seaice_budget_ocean/ice
591      - add new interface for atmospheric wind forcing (C-grid only)
592        + new routine
593        + two new field (taux, tauy for stress over ice)
594        + removed one global field (DAIRN) for C-grid case only
595    o pkg/thsise
596      - 2nd set of modifs for thsice adjoint in conjunction with exf
597    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
598    
599    checkpoint58y_post
600    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
601      vertical diffusivity, similar to that in MOM4; turned on using
602      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
603      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
604    o Added capability for 3D specification of background vertical diffusion
605      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
606      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
607      "data" file that contains the 3D vertical diffusivity coefficients.
608    o ice dynamics (pkg/seaice) with thsice thermodynamics:
609      - add code within pkg thsice to advect & diffuse sea-ice fields
610      similar to (and will replace) what has been added in  seaice_advdiff.F,
611      but: - conserving Mass, Heat & Salt.
612           - better when using non-linear advection scheme (not yet fully tested)
613           - can also be used in atmospheric set-up (for now, only the diffusion).
614    
615    checkpoint58x_post
616    o IO option for global-file compact format:
617      - add options when generating topology (utils/exch2/matlab-topology-generator)
618      - add I/O capability (pkg/mdsio).
619      - adapt utils/matlab/rdmds.m to read this format.
620      for now long-line format not yet supported by pkg/mdsio (& exch2).
621    o shelfice: add a few diagnostics
622    
623    checkpoint58w_post
624    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
625      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
626      (and replace horiVertRatio in NH code).
627      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
628                         and tutorial_plume_on_slope (sensitive to truncation)
629    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
630      directly to drive seaice model (C-grid only)
631    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
632     - reintroduce computation of wind from stress,
633     - compute tau (in exf_bulkformulae.F) from windstress averaged to
634       mass points to avoid tau = 0
635     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
636    o rdmnc.m: make it work with "global" files created with gluemnc
637    o rdmnc.m : some improvements in dealing with singleton dimension
638      (tested on all testreport mnc output files).
639    o genmake2: disable pkg/profiles if netcdf test fails.
640    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
641    o move call to cal_readparms up to make calendar parameters/variable available
642      to all packages
643    
644    checkpoint58v_post
645    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
646      useDynP_inEos_Zc tested.
647    o pkg/exf: changes to properly interpolate/mask/scale initial fields
648    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
649      and portions thereof.  See read_cs.txt for description and examples.
650    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
651      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
652      following the great-circle arc between those 2 points.
653    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
654      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
655    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
656     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
657     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
658     - still needs work (not working with some options ; efficiency to improve)
659       and serious testing.
660     - use this scheme for temperature & salinity in 2 advection test exp.:
661       advect_xy & advect_xz, respectively.
662    
663    checkpoint58u_post
664    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
665    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
666    o testreport: add option "-skipdir" to skip some test.
667    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
668      momentum calculation.
669    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
670    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
671      remove checkpoint.F and the_correction_step.F (no longer used);
672      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
673    o add option (linFSConserveTr) to correct for tracer source/sink due to
674      Linear Free surface
675    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
676    o pkg/thsice: fix reading mnc-pickups
677    
678    checkpoint58t_post
679    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
680    o pkg/mdsio:
681     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
682       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
683       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
684     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
685     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
686       either MDS_READ_FIELD or MDS_WRITE_FIELD )
687     - new S/R (to replace MDSWRITEMETA), which allows to write more
688       informations (variable names, time ...) to meta files.
689     - modify rdmds.m to give back the meta file content.
690    o pkg/diagnostics: change vertical interpolation to be safer, and more
691       flexible (define p-levels to interpolate to in data.diagnostics);
692      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
693       diagnostic pointer.
694    o pkg/seaice: more cleaning up of seaice_growth, added many comments
695    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
696    o fix multi-category seaice:
697     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
698       SEAICE_MULTICATEGORY
699     - fix short wave heat flux
700    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
701       and allow to use EVP solver. Change forward lab_sea: test both EVP
702       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
703    o Initial check-in of lab_sea adjoint
704      (very similar to natl_box_adjoint/code_seaice)
705      * used C-grid and EVP solver
706      * used KPP, GM/Redi
707      * uses inAdExact=.TRUE.
708      * gradient checks fail for both ADM and TLM
709        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
710        f.d. gradients actually seem more problematic than ADM, TLM gradients;
711        issue is related to forward mismatch between g77 an ifort
712    o pkg/seaice: overhaul of thermodynamics
713     - growth.F and groatb.F are replaced by new routine seaice_growth.F
714     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
715     - move a few global fields out of SEAICE.h into seaice_growth.F and
716       make them 2D (FICE/QNETO/ ...)
717     - remove FO (it is the same as QNETO)
718     - introduce a few local fields to avoid modifying external fields such
719       as atemp, etc.
720    
721    checkpoint58s_post
722    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
723      changed exf_set_gen.F so that
724        genperiod=0 means input file is one time-constant field and
725        genperiod=-12 means input file contains 12 monthly means
726    o CG2D: use pre-computed solver main-diagonal (stored in common block);
727      this affects truncation error ; generate new output file for exp. which
728      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
729        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
730        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
731        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
732        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
733        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
734    o start implementation of deep-atmosphere and anelastic formulation
735    o verification: remove 2nd copy of input files and use script "prepare_run"
736      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
737    o mom_common/vecinv/fluxform: fix a few initialisation isssues
738    o profiles: fix for multithreaded case
739    
740    o diagnostics: rename few diags:
741      s/'PRESSURE'/'RCENTER '/g
742      s/'TICE    '/'oceFreez'/g
743      s/'TAUX    '/'oceTAUX '/g
744      s/'TAUY    '/'oceTAUY '/g
745      s/'SWFLUX  '/'oceQsw  '/g
746      s/DIFx/DFxE/g
747      s/DIFy/DFyE/g
748      and add few ocean-forcing diagnostics:
749      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
750    o modifications to pkg/seaice/growth.F and budget.F, which change results of
751      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
752      as actual snow thickness.  It now refers everywhere to effective snow
753      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
754    
755    checkpoint58r_post
756    o modifications to pkg/seaice/growth.F, which change results of
757      lab_sea experiment: fixes pertain to melting snow over open water, to
758      masking EVAP under sea ice, and to using the correct AREA variable for
759      computations of EVAP, PRECIP, HSNOW, and GHEFF
760    o add ability to read bathy, salt, and theta using MNC (off by def)
761    o add flooding algorithm and advection of HSNOW for pkg/seaice;
762      both are turned off by default and do no change any results
763    o seaice advection with pkg/thsice: a step toward the use of non-linear
764      advection scheme, but #ifdef or commented out for now (requires more EXCH).
765    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
766      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
767      in natl_box (affects results @ truncation level: update output.txt)
768    o multi-threading and IO:
769      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
770      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
771        (needed to work with SingleCpuIO): tested in all verif. exp.
772    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
773      affects the results (but none of the verification test uses this scheme).
774    o Adding some pkg/diagnostics capability to pkg/seaice
775      (will certainly be subject to changes)
776    o ctrl: adding new control variables:
777      lwflux, lwdown, evap, snowprecip, apressure, runoff
778    
779    checkpoint58q_post
780    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
781      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
782      high_res_cube configuration by 4% on Columbia.
783    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
784      add (in global_with_exf/code) a version of EXF_INTERP_READ without
785      dynamical allocation (seems to work in multi-threaded).
786    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
787      single CPU io) so that TAF does not have to see EESUPPORT.h
788    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
789    
790    checkpoint58p_post
791    o obcs: stop if obcs is used with useCDscheme = .true.
792    o shelfice:
793     - fix a sign error so that no slip at shelfice interface works
794     - remove stop for combination non-hydrostatic code and shelfice. That does
795       not mean, that the results are correct, but at least they are numerically
796       stable
797    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
798    o added adjoint exch routined for all exch*3d* routines
799      and updated flow directives
800    
801    checkpoint58o_post
802    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
803      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
804    o change controling S/R for writing pickup file (new S/R do_write_pickup)
805      and clean-up reading/writing of pickup files.
806    o fix local version of read/write pickup (NH part) in rotating_tank/code
807    o simplify EXCH interface:
808     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
809     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
810    o added the regrid package
811    o shelfice:
812     - add a simple boundary layer scheme to reduce noise
813     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
814    
815    checkpoint58n_post
816    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
817       local variable (not in common block).
818    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
819      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
820      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
821        to work with SingleCpuIO.
822    o add "_d 0" to real constant of pkg/cfc subroutines ;
823       update exp. cfc_exemple & tutorial_cfc_offline output files.
824    o multi-threading and IO:
825      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
826        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
827      - barrier before and after reading.
828      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
829      - avoid using MDS_WRITELOCAL for LAND pkg output.
830      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
831        common-block variables ; Allows multi-threading with master-thread IO.
832    o change default MAX_NO_THREADS from 32 to 4 ;
833      and stop cleanly when MAX_NO_THREADS is too small.
834    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
835    
836    checkpoint58m_post
837    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
838       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
839    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
840       keep global_ocean.90x40x15 (for AD testing) with former secondary test
841       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
842    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
843        add MITgcm_tutorials (= code + all the tutorials)
844    o ecco, option to compute cost for total ssh (mean+anom)
845    o consistent with addition of ptracer and ssh in pkg/profiles
846    o profiles: adding ptracer and ssh
847    o testreport: change multi-test output-file name
848      (from output.txt.{name} to output.{name}.txt)
849    o profiles: now ok for mutli-tiles case
850    o seaice: add 4 parameters for different advection schemes for area,
851      (effective) seaice thickness, enthalphy, and snow height. Their default
852      is the standard parameter SEAICEadvScheme
853    o calc_gw:
854     - add cosFacU in zonal viscous flux (harmonic.visc.).
855     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
856       of tutorial_plume_on_slope.
857    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
858    o calc_gw: true flux-form, account for horizontal grid spacing.
859      update rotating_tank results, but not plume_on_slope (affected at
860      truncation level, 11 digits).
861    
862    checkpoint58l_post
863    o calc_gw:
864     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
865     - remove side-drag for now (need to fix it); update plume_on_slope results.
866     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
867    o commit code to make SST/SSS weights spatially variable
868      (based on either variable in-situ or variable initial T/S weights)
869    o pkg/ecco:
870      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
871        now based on horizontally varying weights wthetaLev, wsaltLev
872      * cost_averagesflags now returns year indices in addition to day, month
873      * sflux balance is performed on annual basis
874        (sflxumm, sfluxmm2, bal_sfluxmm)
875      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
876        including separate counting and multipliers
877    o pkg/rbcs
878      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
879    
880    checkpoint58k_post
881    o testreport:
882     - always build in dir. "build" (if not there, mkdir build instead of building
883       & running in input)
884     - run in dir run (if it exists), in build otherwise.
885     - call prepare_run (if input/prepare_run exists)
886     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
887    o pkg/exf modifications to interpolation and rotation routines for more
888       reasonable treatment of North Pole singularity: for tracers North Pole
889       value is set to northernmost zonal-mean value, for zonal velocity it is
890       set to zero, and for meridional velocity it is set to northernmost value.
891    o pkg/exf/exf_check_range.F
892     - add tile index to diagnostics and move stop statement to the very
893       end of the routine.
894    o pkg/diagnostics: (diagnostics_main_init.F)
895      define title of isomorphic variables according to the current config.
896    o pkg/thsice with pkg/seaice dynamics:
897    - fix domain of computation (interior only, required for exf) and do exchanges
898    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
899    o towards a standard way of dealing with multi-threading in MONITOR
900      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
901    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
902       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
903    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
904    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
905    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
906       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
907    o tracer advection:
908     - clean-up and simplify calc_common_factors.F
909     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
910       advection subroutine (but still not used within DST advection S/R)
911    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
912    
913    checkpoint58j_post
914    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
915      from file (collects calls previously in FORWARD_STEP)
916    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
917    o adjoint store dir. adjusted accordingly
918    o genmake2
919      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
920    
921    checkpoint58i_post
922    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
923      on wind stress (SEAICEstressFactor defaults to 1.)
924    o Total number of Timers is finite (<=40): comment out 2 non-essential one
925      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
926    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
927      on CS-grid: no longer loosing mass.
928    o exf & curvilinear-grid: no longer modify longitude xC & xG.
929    o pkg/ggl90: fix sloppy output and fix a bug
930    o pkg/seaice: added SEAICEuseEVPpickup parameter
931      - Set to false in order to start EVP solver with
932        non-EVP pickup files when using SEAICEuseEVP
933      - fix sign error in diffusion in seaice_calc_rhs
934    
935    checkpoint58h_post
936    * Modifications for bottom topography control
937      o replace hFacC by _hFacC at various places
938      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
939      o add non-self-adjoint cg2d_nsa
940      o update autodiff support routines
941      o re-initialise hfac after ctrl_depth_ini
942      o works for 5x5 box, doesnt work for global_ocean.90x40x15
943    * Adding verification for 5x5 box (4-layer) bottom topography control
944    
945    checkpoint58g_post
946    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
947       used for mean seasonal cycle, mean diurnal cycle); add an example
948       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
949    o pkg/ggl90:
950      - add parameter (minimum surface kinetic energy)
951      - fix bug (avoiding division by zero)
952    o couple pkg/thsice to pkg/seaice:
953      - modify advection in seaice to accomodate new scalar fields to be advected
954      - only muliDimAdection scheme work with seaice/thsice
955      - mapping of thsice-variables to seaice-variables, back and forth
956      - does not break the verification experiments, but does not give the
957        desired results either
958    o pkg/seaice
959      - make (default) second order advection a bit less confusing?
960    
961    checkpoint58f_post
962    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
963      to pkg/seaice):
964      - new routines thsice_map_exf and thsice_get_exf provide the interface
965      - add an additional formal parameter to thsice_solve4temp
966    o pkg/exf:
967      - add new fields wspeed, snowprecip (to be able to couple to thsice)
968      - correct Stefan-Boltzmann constant
969      - new parameter for longwave surface emittance
970      - separate some stuff from exf_bulkformulae into new routines  
971        exf_radiation, exf_wind
972      - add new parameters and constants: longwave emissivity for ocean, ice
973        and snow, evaporation parameters over ice
974      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
975        either wind from stress or stress from wind
976    o pkg/thSIce:
977    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
978    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
979       and THSICE_CALC_THICKN
980    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
981    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
982      to make debugging easier.
983    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
984    o pkg/bulk_force:
985      - clean-up comments and parameters ;
986      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
987    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
988      generate new output for test-experiment: aim.5l_cs.thSI
989    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
990      testreport accordingly
991    
992    checkpoint58e_post
993    o SEAICE_CGRID adjoint done
994    o R_STAR adjoint implemented.
995      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
996      * need to sort out init. of h0facc, etc.
997    o Make pkg/profile fully independent of ecco,cost, etc. stuff
998      to be able to use it in pure forward.
999    
1000    checkpoint58d_post
1001    o upgrade simple test-experiment to tutorial example:
1002     step.1: duplicate the experiment and (step.2) will remove the old copy.
1003      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1004      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1005      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1006      tutorial_global_oce_biogeo    <- copy of dic_example
1007      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1008      tutorial_plume_on_slope       <- copy of plume_on_slope
1009      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1010      tutorial_global_oce_optim     <- empty for now (David ?)
1011      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1012     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1013    o correct a sign problem in cost_scat.F
1014    o obcs and ptracers: fix boundary conditions for advections schemes
1015      with larger stencil
1016    o thsice adjoint: start
1017    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1018      completeness
1019    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1020      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1021    o ptracers adjoint:
1022      * avoid extensive recomputatations
1023      * fix missing re-init. of gptr (missed by TAF)
1024    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1025      me to turn off the excessive output to STDOUT that this package produces
1026    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1027      and add those terms in Vector-Invariant formulation.
1028    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1029      if the control period (xx_hfluxperiod etc) is 0
1030    o in profiles pkg, clean routines and fix details
1031    o in ecco pkg, reading ssh data:
1032      fix problem in case the model does not start at iter0=0
1033    o fix mnc-pickup/restart for ptracers
1034    o new package prifiles:
1035      code to compute profile-based cost by Gael Forget
1036      (modifs in ecco, ctrl, autodiff)
1037    o Benign bug fix in initialization (spotted by M. Mazloff) of
1038      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1039    
1040    checkpoint58c_post
1041    o adjoint: finish NLFS adjoint and provide reference output in
1042      verification/global_ocean.90x40x15/results_ad_nlfs
1043    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1044      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1045      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1046      with SEAICE_CGRID defined.
1047    o move calendarDumps from "data" to "data.cal" and clean-up the code
1048      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1049    o add useEXF & useCAL flags (for now, set in hard-coded way)
1050    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1051      (were missing in NH mode, and wrong in quasihydrostatic mode).
1052      waiting for Chris updated version of calc_gw to add those CALLs.
1053    o fix bug in quasihydrostatic S/R ;
1054      add a test for this option: global_ocean.90x40x15.qshyd
1055    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1056      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1057    o add on/off flag useOffLine for package OFFLINE
1058    o seaice:
1059      - modify advection so that it works also on the C-grid
1060      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1061        problem in multi-tile runs with C-grid
1062      - add flags for clipping ice velocities and/or masking solver forcing
1063      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1064        C-grid solver
1065      - added a few comments to seaice_diffusion.F
1066      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1067        are now exclusive)
1068      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1069        required re-ordering the code a little:
1070       + make DAIRN global variable (defined in SEAICE)
1071       + move computation of the viscosities eta and zeta into a new separate
1072         routine (because I need to recompute them in seaice_ocean_stress.F)
1073    
1074    checkpoint58b_post
1075    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1076      update output.txt of exp. aim.5l_cs.thSI
1077    o various mnc cleanups and improvements:
1078      + shrink lookup tables by factor of ~4
1079      + better error reporting when running out of lookup space
1080      + able to handle longer path/file names (up to 500 chars)
1081    o adjoint:
1082      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1083      - TBD: "hidden" mom_vecinv recomp. in dynamics
1084    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1085     (allow to differentiate between forcing components using new integer flags:
1086      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1087     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1088    o ecco
1089      - enable trend removal from SSH anomaly obs.
1090    o adjoint
1091      - a fix for PmEpR when #undef EXACT_CONSERV
1092      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1093      - try to fix "hidden" recomp. in forward_step for NLFS
1094        (NLFS seems broken sometimes after I checked it in)
1095    o seaice:
1096     - add c-grid version of the dynamic solver:
1097       + three new routines that are the c-grid substitute lsr, dynsolver
1098         and ostres
1099       + put a few fields that were local to dynsolver into global common
1100         blocks, so that I can move the computation of stresses etc into
1101         seaice_lsr (saves coding but may break the adjoint).
1102     - replace more hardwired parameters by runtime parameters
1103     - add ice masks that mask the rhs of the implicit solvers where there
1104       is no ice (commented out in seaice_dynsolver, because i am not sure
1105       if this works properly), eventually this should replace the clipping
1106       of ice velocities in seaice_dynsolver to +/-40cm/s.
1107    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1108      include it only where its needed
1109    o move balancing of fluxes before the call of external_forcing_surf
1110    o seaice:
1111      - correct units of turning angles (now they are really in degrees)
1112      - move computation of GWATX/Y out of main routine into dynsolver
1113      - initialize GWATX/Y in seaice_init
1114    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1115      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1116    o seaice: add runtime flags for turning angles (default to zero)
1117    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1118      and trend from exf forcing and ctrl control adjustments
1119    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1120      (since checkpoint57x_post)
1121    o change the default rotation period to 86164.s = the Earth rotation
1122    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1123      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1124    o seaice advection: add code for choosing between the default (2nd order
1125      central differences) and multiDim advection schemes provided by
1126      pkg/generic_advdiff
1127    o seaice:
1128      - removed all references to SEAICE_GRID.h fields from
1129        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1130        (cubed-sphere configuration will change a little)
1131      - grid computations in seaice_init are obsolete now.
1132      - cleaned up code a little so that is easier to read (hopefully).
1133      - added new (better?) discretizations of default advection and diffusion
1134        (turn on with SEAICEuseFluxForm)
1135      - replace 1 in 3d global fields by kSurface in growth.F
1136      
1137    checkpoint58a_post
1138    o seaice:
1139      - bug fix in advect.F
1140    o shelfice:
1141      - separate shelfice load anomaly from pload (breaks with time
1142        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1143        Its default is 0., but it may be computed more cleverly from (unknown)
1144        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1145        done offline. A good approximation of the pressure load anomaly is
1146        necessary to avoid large initial adjustment processes underneath
1147        deep-reaching shelfice.
1148      - small fix in ISOMIP shelfice_thermodynamics
1149      - add more sophisticated thermodynamics of Hellmer (1989), this is
1150        now the default
1151      - give a few constants more intuitive names
1152    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1153      if bulk formulae are used in long integration (especially EmPmR). Turn
1154      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1155      if balancePrintMean, the imbalance that is substracted is printed to
1156      STDOUT.
1157    o fix bug (typo) in obcs_apply_eta.F
1158    o add a new package shelfice which enables us to model the circulation
1159      underneath shelf-ice with draughts of hundreds of meters.
1160     - works
1161     - to do: + include improved thermodynamics
1162              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1163                instead of new field kTopC
1164              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1165                instead of new field R_shelfIce and new code in ini_depth.F
1166                and ini_mask_etc.F?
1167              + adjust vertical mixing schemes?
1168    o seaice pkg:
1169     - add a cpp-flag to include a simple formula for a salinity dependent
1170       freezing point of sea water at the surface
1171     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1172       meridional stresses are now different (and hopefully correct)
1173    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1174       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1175       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1176    o pkg/diagnostics: add options and parameters for regional-statistics
1177       diagnostics ; define regions by reading a region-mask from a file
1178       (might add other options later)
1179    o pkg/bulk_force:
1180     - add option and parameters to use AIM surface-flux formulae.
1181     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1182       others forcing fields (defined in PARM05, parameter file "data") are loaded
1183       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1184     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1185     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1186     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1187       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1188     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1189    
1190    checkpoint58
1191    o add "--embed-source" option to genmake2 which, when the supporting
1192      tools can be compiled (as determined by genmake2) will turn on the
1193      embed_files package which then embeds the entire MITgcm source code
1194      (*.[fFhc] + Makefile) used for the build within the executable
1195      - requested by CNH but off by default
1196      - adds a paltry <9MB to the mitgcmuv executable in most cases
1197      - only writes the output when useEMBEDSRC in eedata is true
1198    o clean up 3-dim. relaxation codes:
1199      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1200      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1201      * Thanks to Tom Haine for testing!
1202    
1203    checkpoint57z_post
1204    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1205      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1206    o fix the pickup behavior for obcs in combination with ptracers
1207    o fix a bug in ptracers_external_fields_load
1208    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1209      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1210    o transfered surface NH pressure to eta field (if exactConserv).
1211    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1212         and update lab_sea output.txt file.
1213    o completing 3-dim. relaxation code: additional term
1214         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1215      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1216      * At compile time, in "EXF_OPTIONS.h" set
1217          #define  ALLOW_CLIMTEMP_RELAXATION
1218          #define  ALLOW_CLIMSALT_RELAXATION
1219      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1220          tauThetaClimRelax3Dim = 15552000.0,
1221          tauSaltClimRelax3Dim  = 15552000.0,
1222      * 3 cases:
1223          1) Use a constant-in-time 3-dim. field
1224          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1225          3) Real-time relax. to time-evolving prescribed field
1226    o Adding Laplacian-type smoothness constraint on
1227      initial and boundary (forcing) controls (ic, bc)
1228      * enable at compile-time via
1229        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1230      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1231      * Absolute scale somewhat unclear so far
1232      * no area weighting was included since no other cost term does so far
1233    
1234    checkpoint57y_post
1235    First step for a NLFS adjoint
1236    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1237    o new init. routines for calc_r_star, calc_surf_dr
1238    o still need to deal with ini_masks_etc
1239    o testreport seemed happy
1240    checkpoint57y_pre
1241    
1242    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1243    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1244    o add new offset feature to offline pkg (plus minor cleanup)
1245    o cfc fixes for final year of integration
1246    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1247      be in GCHEM_OPTIONS).
1248    
1249    checkpoint57x_post
1250    o fix testreport Pb in multiple test experiment.
1251    o cleanup our namelist syntax in verification:
1252      - make it more F95 standards compliant (some work still needed)
1253      - allows the vast majority of our tests to work with gfortran
1254    o Non-Hydrostatic:
1255     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1256     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1257    o Allow to apply AB on T,S rather than on AB(gT,gS):
1258     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1259     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1260       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1261     - need a "clever" read_pickup to restart from the other AB formulation
1262    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1263    o remove some unused variables (reduces number of compiler warnings)
1264    o adjoint
1265      * Disable useVariableViscosity for adjoint for time being
1266        (there are a number of extensive recomputations)
1267      * Initialize certain variables needed for adjoint
1268    
1269    checkpoint57w_post
1270    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1271                 fix the singleCpuIO RS version of MDSWRITEFIELD
1272       and add a WARNING if using globalFiles=T with multi-processors.
1273    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1274      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1275    o tracer advection scheme:
1276      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1277       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1278       was not very convenient).
1279      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1280       (further tests needed for the implicit DST & Flux-Limiter schemes).
1281    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1282      and sRef for convenience, handy, when you want to initialize
1283      ptracers in a large domain with a constant non-zero value. Also,
1284      untangle ptracers_init.F a little.
1285    
1286    checkpoint57v_post
1287    o change dome exp. to use variable viscosity in side-drag terms.
1288    o remove all the files from the cfc_offline test since they are now
1289      incorporated into tutorial_cfc_offline which has been producing
1290      identical results for a few days of testing
1291    o add new parameter: sideDragFactor to enable half-slip-side BC
1292      and change side-drag S/R to use viscosity from mom_calc_visc
1293      (can switch back by setting sideDragFactor=0.); affects results at
1294      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1295       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1296    o vorticity & strain are now computed without masking, to account for
1297      no-slip-side BC in variable viscosity calculation ; mask is applied
1298      anyway later on, before computing advection/coriolis terms.
1299    o modify exp4 to test new obcs support for reading from external files
1300      and for passive tracers
1301    o fix behavior of ptracers_monitor when monitor output is written to a
1302      netcdf-file; still not independent of monitor.F (writes in the same
1303      file).
1304    o change default value of tRef (put a uniform, meaningful value for ocean
1305      & atmos) and initialize sRef (was missing, as Martin mentioned).
1306    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1307      to be proportional to enstrophy dissipation length.  Thus,
1308       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1309      This is now consistent with Smagorinsky and with the manual.
1310    
1311    checkpoint57u_post
1312    o OBCS and PTRACERS: add open boundary support for passive tracers
1313      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1314        OB-values from file; this is not different from the way theta and salinity
1315        are treated
1316      - however, Orlanski-radiation conditions are not supported, and the model
1317        will stop if you use pTracers and Orlanski at the same time.
1318      - beefed up the rountine obcs_external_fields_load: now only those open
1319        boundary values are overwritten with values from files for which there
1320        are really files, otherwise the OB-fields remain untouched. This makes
1321        it possible to use different OBs at different ends of the domain (as
1322        with EXF)
1323    o reduce number of exch calls in shap_filt (s2).
1324    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1325      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1326    
1327    checkpoint57t_post
1328    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1329    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1330      same truncation, independent of the face number: affects affects several
1331      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1332    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1333      note that biharmonic viscosity + no-slip was not tested in any experiment.
1334    o fix bug in non-linear free-surf side-drag ; generate new output for
1335      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1336    o make mnc honor the writeBinaryPrec flag for most kinds of output
1337    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1338    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1339      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1340    o add brackets in multi-terms sum to get same truncation, independent of
1341      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1342      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1343    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1344      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1345      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1346      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1347      Suggested values of viscosity parameters found in mom_calc_visc.
1348      Many new viscosity diagnostics available.
1349    
1350    checkpoint57s_post
1351    o Add clearing-house for viscosity calculations, mom_calc_visc and
1352      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1353      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1354      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1355      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1356      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1357      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1358      ViscAhStrain and viscAhTension are now retired.
1359    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1360    o In response to JMC's bug report, genmake2 now ignores any soft-links
1361      that it finds in the *current* directory when searching for files.
1362      Soft-links found in any other source directories will still work as
1363      they did before.
1364    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1365      a C routine to unlimit the stack size
1366    o mnc-ify pkg/aim snapshot vars
1367    o mnc-ify pkg/land as requested by Daniel
1368    o various changes to mnc including:
1369      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1370      - output can now be grouped so that all files within a group
1371          change the ITER portion of their names in lock-step together
1372      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1373          and works with both EXCH1 and EXCH2 (but needs more testing)
1374      - writing works for all verification test cases w/ g77 on Linux
1375    
1376    checkpoint57r_post
1377    o make MNC variable initialization happen earlier
1378    o add diagnostics for (almost) each term of the momentum Eq.
1379    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1380    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1381    o remove MINIMAL_TAVE_OUTPUT option ;
1382      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1383    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1384      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1385    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1386    o add time-dependent SST, SSS control
1387    o cost terms in ecco/ modularized (new cost_generic.F)
1388    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1389    o new infrastructure for seaice model vs. obs misfits in seaice/
1390      * driver from the_main_loop.F is seaice_cost_driver.F
1391      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1392      * gradient check in Exp. 6a of natl_box_adjoint/
1393    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1394      (see README file)
1395    
1396    checkpoint57q_post
1397    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1398    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1399      - bug was reported by Jean-Michel and Ian Fenty
1400    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1401      update exp. cpl_aim+ocn output.
1402    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1403      Needed for high-res. runs with large global files
1404      to be able to limit tapelev size
1405    o Changed some tests for adjoint:
1406      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1407      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1408      * global_ocean.90x40x15/ back to default 3-level checkpointing
1409    o Modifications to enable scripted COMMON to MODULE conversion
1410      * verification/OpenAD/code/ has necessary scripts and description;
1411      * converts, compiles and runs successfully;
1412    
1413    checkpoint57p_post
1414    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1415    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1416      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1417    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1418    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1419      (was already the case for dissipation with mom_vecinv,
1420       and also the case for grad.PhiHyd when staggered-timeStep)
1421      This will allow to put dissipation out-off the AB time-stepping.
1422     Unfortunately, affects truncation error. Update output of exp. that "fails"
1423      (cg2d matching number) and leave the others for later: front_relax(10),
1424      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1425      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1426    
1427    checkpoint57o_post
1428    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1429      (2) its ready to be documented during the 20050801 DocFest
1430    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1431      for ideal_2D_oce and lab_sea on linux_ia32_g77
1432    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1433      in global1x1_tot/code_seaice_adj to access indices 32, 33
1434      (worth another tag)
1435    
1436    checkpoint57n_post
1437    o adding precip control xx_precip 32
1438    o adding swflux control xx_swflux 33
1439    o Replacing 10 forcing penalty cost routines by 1 generic.
1440    o Implementing partitioning in time-mean and variable adjustment
1441      for atmos. state.
1442    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1443    o in natl_box_adjoint:
1444      * updated exp 1 to 10
1445        (but does not have time-mean vs. variable split results yet)
1446    o updated global1x1/*_seaice_adj/
1447      to incorporate latest changes
1448    o enable useSingleCpuIO for mdsio vector routines
1449      (applies in particular to tapelev I/O)
1450    o removed inefficient K-loop in all active_file*control*.F
1451    
1452    checkpoint57m_post
1453    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1454      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1455    o pkg/exch2: filling of face-corner halo regions is optional
1456      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1457    
1458    checkpoint57l_post
1459     tag before updating tutorials (pre-release-2)
1460    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1461       for output and interpolation of input fields onto model grid)
1462    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1463       Affects results of exp. rotating_tank ; update output.txt.
1464    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1465          and taking the square quantity and/or using a fraction-weight field.
1466    o fix aim_diagnostics_init.F mate numbers.
1467    o add mnc output capability to diagnostics/diagstat and update
1468      our cvsignore files for the ACSII output generated
1469    
1470    checkpoint57k_post
1471    o lab_sea now uses diagnostics package and provides a suite of
1472      new EXF diagnostics output.
1473    
1474    checkpoint57j_post
1475    o exf
1476      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1477        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1478        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1479      * extended diagnostics output
1480        - now includes all EXF variables
1481        - hs, hl moved to common block
1482        - separate S/R for diagnostics, called after ctrl vector is added
1483        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1484        - EXFqnet contains true Qnet (i.e. includes qsw)
1485      * updated verif. lab_sea, global_with_exf
1486      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1487        to ensure that diagnostics sees a true EXFqnet
1488    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1489    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1490      several times with different frequencies.
1491    o mnc-ify the thsice package as requested by Daniel Enderton
1492      - the monitor--MNC output needs work
1493      - many attributes need to be added (most are currently blank)
1494    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1495      - many attributes need to be added (most are currently blank)
1496    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1497    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1498    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1499      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1500         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1501    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1502     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1503    
1504    checkpoint57i_post
1505    o Diagnostics package was changed: diagnostic allocation is now deactivated
1506      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1507    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1508      add 1rst Order upwind vertical Shear.
1509    o add a quick fix for A/B checkpointing in OFFLINE mode
1510    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1511      end-run around the C/Fortran linking horror in eesup/src/timers.F
1512    o added pkg/runclock: allows user to terminate run based on wall clock
1513    o added non-hydrostatic scaling parameter: nh_am2
1514    o pkg/my82: futile attempt to make results compiler-independent by adding
1515      some "_d 0", etc. no effect.
1516    o for mnc output, fill the 'T' coordinate var with myTime and create a
1517      separate 'iter' variable for iteration count
1518    o pkg/diagnostics:
1519      add new capability: output of Global/Regional & per-level statistics ;
1520      tested against monitor output (including land & thSIce) on various exp.
1521    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1522    
1523    checkpoint57h_done
1524      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1525      data.diagnostics, data.gchem, data.ptracers) is done.
1526    
1527    o pkg/diagnostics: prepare for Global/Regional statistics.
1528      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1529    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1530      and rename it: DIFFERENT_MULTIPLE
1531    
1532    checkpoint57h_post
1533    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1534    o pkg/diagnostics: change output frequency, now in seconds (instead
1535      of Nb of iterations). This requires to change data.diagnostics.
1536    checkpoint57h_pre
1537    
1538    o in mnc, let the user create the output dir if both mnc_outdir_date
1539      and mnc_outdir_num are false
1540    o add fflags() to pkg/diagnostics which allows one to specify, on a
1541      per-file basis, the file precision [default behavior is unchanged]
1542    o added diagnostics to pkg/kpp, including computation of mixed layer
1543      depth based on a temperature/density criterion
1544    o updated verification/natl_box to test the new pkg/kpp diagnostics
1545    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1546    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1547    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1548      not mnc -- this mistake was found by JMC and is now corrected
1549    
1550    checkpoint57g_post
1551    o add Adams-Bashforth 3rd Order time stepping:
1552      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1553      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1554    checkpoint57g_pre
1555    
1556    o make lambda[Theta,Salt]ClimRelax spatially varying
1557      (default remains spatially uniform constant based on tau)
1558    o added new control variables
1559      * init. uVel, vVel, etanN
1560      * lambda[Theta,Salt]ClimRelax
1561    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1562      (suggested by G. Forget)
1563    
1564    checkpoint57f_post
1565    o add parameter "baseTime" = model base time = time at iteration zero
1566      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1567      account for baseTime shift
1568    o move Coriolis arrays from PARAMS.h to GRID.h
1569    checkpoint57f_pre
1570    
1571    o mnc-ifying the seaice package
1572    o introduced an alternative length scale calculation for use in the limiting
1573      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1574    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1575    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1576      as well as grad(vort3).  Made it compatible with both approximate form
1577      for the cubed sphere and full form of these gradients.  Added flag
1578      useFullLeith to select between approximate and full form.  
1579    o add "d0" in getcon.F to reduce differences between compilers/platforms
1580      update output.txt of exp. fizhi-gridalt-hs
1581    o change port_rand funtion to allow to set the seed.
1582    o fix obscure MNC bug involving conversion between reals and integers
1583      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1584        new version is now more standards-compliant
1585    o adjoint-related modifications
1586      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1587      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1588      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1589    
1590    checkpoint57e_post
1591    o Adding eddy stress controls a la Ferreira et al.
1592    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1593    
1594    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1595      update output.txt of exp. fizhi-gridalt-hs
1596    o add more "Z" dimensions and associated coordinate vars to MNC
1597    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1598    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1599      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1600      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1601      months and years.  Requires pkg/cal.
1602    o diagnostics: add pickup functionality
1603      - off by default for backwards compatibility
1604      - current version only uses MDSIO -- MNC will be added
1605    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1606    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1607    
1608    checkpoint57d_post
1609    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1610    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1611      output from the diagnostics package
1612    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1613    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1614      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1615    o add coordinate variables to the MNC output from the diagnostics package
1616    o change MNC-flags default value: true when useMNC=TRUE
1617    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1618      the ability (off by default) to read the grid information using MNC
1619    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1620    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1621    o do snap-shot diagnostics at the middle of the time-interval (instead of
1622      at the end).
1623    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1624      new test for AIM with thSIce + slab-ocean
1625    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1626    o move state variable diagnostics to the beginning of the time step ;
1627      (note: still needs some work specially for snap-shot diagnostics)
1628      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1629    
1630    checkpoint57c_post
1631    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1632    o generate new output.txt files on faulks with g77 & the new -ieee option
1633    checkpoint57c_pre
1634    
1635    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1636      update output.txt of exp. global_ocean.90x40x15
1637    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1638      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1639    o add saltFlux(+File) forcing capability with periodicExternalForcing
1640    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1641    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1642    o improvements for the MNC output from DIAGNOSTICS:
1643      - correct handling of the unlimitied dimension
1644      - all dims now have associated coordinate variables
1645      - variables located at U, V, and Corner ("Z") points are now written
1646        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1647        *all* data points are output
1648    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1649    o added pkg/seaice/seaice_monitor.F
1650    o mdsio_readfield.F can now read files visible only to master MPI process.
1651    o pkg/seaice: some test code for ice-modified ocean stress
1652    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1653      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1654      spurious negative numbers for precipitation and humidity.  Will cause
1655      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1656    o pkg/ctrl/
1657      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1658        May be enabled via doPackDiag
1659      *  introduce z-scaling of
1660         + gradient (doZscalePack) and
1661         + control (doZscaleUnpack)
1662    o pkg/mdsio/
1663      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1664      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1665    
1666    checkpoint57b_post
1667    o simplify options in diagnostics_fill arguments (remove weird combinations)
1668    o fix MNC coordinate variables so that they now contain per-face index
1669      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1670      general, EXCH2 grids are only aligned to a "local" coordinate system
1671    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1672    o Implement instantaneous output within pkg diagnostics:
1673      setting a negative frequency in data.diagnostics produces
1674     "snap-shot" output (as opposed to time-average if freq > 0)
1675    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1676      NOTE: change ptracer diagnostics name: use 2 characters to work with
1677            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1678    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1679      becomes the coordinate variable for the 'T' dimension
1680    o add CF-style coordinate variables to MNC
1681      - just a first cut:  numbers are meaningless on the cubesphere and
1682        missing along the T axis but otherwise it works!
1683    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1684    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1685    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1686      this is based directly on what the model compute, so that the content of
1687      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1688    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1689    o clean up build options files for SunOS, in particular
1690      - remove -traditional from xmakedepend
1691      - change -xarch=v9 to -xarch=native for f77
1692      - restore use of make (not gmake)
1693      - add CC=gcc if using g77
1694    o changes per discussion of AM, JMC, & EH3 today:
1695      - move redundant "grid" variables out of "state" -- in preparation of
1696        creating proper CF-style coordinate variables and in recognition
1697        that any/all grid variables can be easily copied (eg. w/NCO) from
1698        the grid files into any of the other NetCDF files
1699      - *always* output grid variables with MDSIO (this will eventually be
1700        changed)
1701      - output MNC grid file if useMNC is true
1702    o every instance of _END_MASTER() has been found and replaced with
1703      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1704      preprocessors
1705    o re-arrange diagnostics pkg initialisation:
1706     - allow each package to extend the available diagnostics list
1707     - add some checking and fix small problems (multi-threaded, ...)
1708     - new S/R diagnostics_fill (replace fill_diagnostics):
1709       look through the short list of active diag. (instead of the long list)
1710       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1711    
1712    checkpoint57a_post
1713    o this set of changes restores TAMC compatibility
1714      tested for global_ocean.90x40x15 adjoint on trough
1715      (what a pain)
1716    
1717    checkpoint57a_pre
1718    o some modifs in tools/build_options for sunos
1719    o call ctrl_pack for ctrl at end for optimcycle=0
1720    
1721    checkpoint57
1722    o add horizontal bi-harmonic viscosity for vertical velocity
1723      - new parameter viscA4W (defaults to viscA4)
1724      - affects only non-hydrostatic code
1725      - to be done: no-slip lateral boundary conditions
1726    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1727    o implement Implicit Vertical advection for pTracers
1728    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1729      (implemented also for implicit vertical diffusion & advection)
1730    o OBCS: extend application of tracer open boundary conditions
1731      to a strip beyond the boundary of width Olx/Oly
1732    o add call monitor to TAF set of required calls (flow directives)
1733      and include in natl_box_adjoint
1734    o untangle a few ifdefs related to cost, ctrl, autodiff
1735      untangel a few ALLOW_ECCO_OPTIMIZATION
1736    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1737      (theta2, salt2 in ecco_cost_weights)
1738    
1739    checkpoint56c_post
1740    o OBCS as control variables
1741      - update ctrl_ad_diff.list, obcs_ad_diff.list
1742      - remove balance of obcs controls from default
1743      - fix index bug nobcs in ctrl_init
1744      - fix dummy fields filen in ctrl_pack
1745      - add dummy weights for obcs
1746    o lsopt: comment out fort.94 output
1747    o optim:
1748      - remove unnecessary header files
1749      - adjusted namelists
1750      - add xerbla.F to Makefile
1751    o exf:
1752      - multiple modifications of exf_check_range
1753      - unit change in exf_init_runoff from [m/year] to [m/s]
1754    o mdsio:
1755      - i/o-vector change debugLevel from debLevA to debLevB
1756    
1757    checkpoint56b_post
1758    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1759      is called from DO_THE_MODEL_IO
1760      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1761      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1762      - clean up PTRACERS_WRITE_TIMEAVE a little
1763    o add another verification experiment that tests both the cfc-pkg and
1764      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1765      reactive tendencies treated inline with regular timestepping
1766    o testreport previously did a lousy job of comparing small numbers, so
1767      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1768      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1769      testreport.
1770    o ptracers_monitor: bug fix for MPI
1771    
1772    checkpoint56a_post
1773    o GCHEM: finish reorganizating the package
1774      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1775        (introduces another 3D-array for each passive tracer, but only if
1776        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1777        gchemTendency is not needed because the timestep is done separately)
1778      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1779      - GCHEM is now---more or less cleanly---separate from PTRACERS
1780      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1781        so clear to me how that should be done in a general way.
1782    o CFC: improve formatting of output in CFC_ATMOS
1783    o PTRACERS:
1784      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1785        that ALL experiments with ptracers enable can be checked. This makes
1786        GCHEM_MONITOR obsolete.
1787      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1788        monitorFreq
1789      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1790    o add PTRACERS (PTR0[1-5]) to testreport output
1791    o exf_check_range:
1792      * default changed to .TRUE.
1793      * will check values for niter0 if debLevA, every timestep if debLevB
1794      * STOP in exf_check_range if 'out of range'
1795      * range chosen generous to allow for potential extema
1796      TBD: a version with stricter range
1797           permitted range would be runtime parameters
1798    o GMredi:
1799      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1800      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1801      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1802    o GCHEM:
1803      - move call to GCHEM_FORCING_SEP, so that it is now called before
1804        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1805      - introduced a useGCHEM runtime flag and applied it everywhere.
1806      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1807        this flag is now only visible within GCHEM-pkg routines.
1808      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1809        be replaced by a 3D array that is computed before thermodynamics; for
1810        this, the tracer ID iTracer had to be included into the parameter list
1811        of ptracers_forcing
1812      - set up forward_step to call gchem_forcing, that will replace
1813        gchem_forcing_int in ptracers_forcing
1814      - cleaning up
1815    o small cleaning of exch2: remove files that are also in eesupp/src
1816    
1817    checkpoint56
1818    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1819    o mnc: cleanup "full" files--fixes out-of-memory problem
1820    o ECCO-GODAE
1821      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1822      * fully merged and updated from SIO code
1823        windstress sign change affects
1824        - exf_inscal_[u/v]stress
1825        - sign of xx_tau[u/v] adjustments
1826        - signs in cost_scat
1827      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1828      * natl_box_adjoint updated and compressed
1829      * 2-level checkpoint switch added
1830        (tested in EXP. 1 of natl_box_adjoint)
1831      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1832    o SVD
1833      * first complete, non-hacked version for SVD calculations
1834      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1835        performed via direct access files admtlm_vector.it????
1836        (via ctrl_[un]pack)
1837      * optimcycle is used for ARPACK iteration counter
1838        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1839      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1840        and add linear transforms where necessary
1841      * controls are initial/final SST, SSS (can be extended; need to check
1842        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1843    o mdsio: filename info to both stderr, stdout
1844    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1845      from sign change
1846    
1847    checkpoint55j_post
1848    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1849      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1850    o add consistent build directories and .cvsignore files to verification
1851    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1852    o make all subroutines 30 or less characters in length for certain older
1853      compilers to work (a thorough search only turns up two routines in
1854      pkg/ptracers)
1855    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1856      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1857    
1858    checkpoint55i_post
1859    o change arrays for total vertical diffusivity (2.D if explicit,
1860      3.D if implicit) ; each ptracer uses its own background value.
1861    o added mnc/NetCDF output capability to ocn_compon_interf
1862      - added bits to verification/cpl_aim+ocn so that it can run on
1863        ITRDA and other clusters without the mpirun "-wd" option
1864    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1865      configuration
1866    o give MNC the ability to create additional files rather than
1867      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1868      - the default is just less than 2GB which is a practical limit
1869        on many systems
1870    o Compute the non-local term using either KPP vertical diffusivity (=default)
1871       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1872    
1873    checkpoint55h_post
1874    o add verification test "vermix"
1875    o remove all the *_ioinc flags and replace with the single global
1876      outputTypesInclusive flag
1877    o allow to set a vertical profile of vertical diffusivity for T & S
1878    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1879    o useMNC moved from data.mnc to data.pkg
1880    
1881    checkpoint55g_post
1882    o Renaming carbon AD experiments to comply with testreport conventions
1883    o Updating adjoint of Held-Suarez hs94.1x64x5
1884    o Fixing directives for non-ECCO forward_step, after ECCO directives
1885      have been fixed to avoid recomp. of do_oceanic_phys
1886      Works well for global_ocean.90x40x15,
1887      but recomp. issue remains for carbon
1888    o Updating adjoint output for natl_box_adjoint after
1889      pkg/ecco has been modified (see taga c55d_post)
1890    
1891    checkpoint55f_post
1892    o rename to timeave_init_fixed
1893    
1894    checkpoint55e_post
1895    o some delicate re-shuffle of store directives to avoid one
1896      extra call of do_oceanic_physics
1897      affects ecco_the_main_loop.F, do_oceanic_physics.F
1898      checkpoint_lev1_directives.h
1899    o NB: this may break global_ocean adjoint temporarily,
1900      but it is clear how to fix it. Will do later, need this now.
1901    
1902    checkpoint55d_post
1903    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1904    o ecco_cost_weights is modified to 1x1 runs
1905    o modifs to allow observations to be read in as
1906      single file or yearly files
1907    o enable to read exf forcing fields as either
1908      single file or yearly files (flag useExfYearlyFields)
1909    checkpoint55d_pre
1910    
1911    o switch between 2-level and 3-level checkpointing
1912    o add ability of MNC to write local and "partial" (eg. 2D slices where
1913      the full 3D field is never actually stored) arrays to NetCDF files
1914      with the correct (that is, the complete multi-dimensional) set of
1915      array indicies
1916      - used in mom_vecinv() to write the diagFreq output
1917      - tested (demonstrated) in verification/aim.5l_cs
1918    o further mnc-ification
1919      - add verification/lab_sea to the list with mnc setups
1920      - fix undefined mnc v-names in cd_code
1921      - add kpp to mnc output (both snapshot and timeave)
1922    o non-hydrostatic code
1923      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1924        in calc_gw.F
1925      - defaults to viscAh
1926      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1927        friction or Leith) in non-hydrostatic mode, as long as there is
1928        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1929    o pkg/cost
1930      extend simple cost functions to treat time mean quantities
1931      (T,U,V) via cost_accumulate_state from cost_tile
1932    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1933        be 2 times larger than the minimum size the advection scheme requires.
1934        now get a perfect conservation of salt in advect_cs test-exp (updated)
1935    o GGL90 (Gaspar's TKE mixed layer)
1936      - add horizontal diffusion of TKE, requires exchanges in
1937        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1938        default. In OPA there is no horizontal diffusion of TKE but the
1939        mixing coefficients are computed from a horizontal average of TKE of
1940        6 points or so. I think that diffusion has a little more physical
1941        justification.
1942      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1943        was in vain)
1944      - mask tke-variable in ggl90_init
1945    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1946    o fix biharmonic diffusion on CS-grid.
1947    o more obcs stuff
1948      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1949        for reading boundary values. This routine is called from
1950        obcs_prescribe_read
1951      - updated obcs_check
1952      - changed sponge layer relaxation parameter units for days to seconds
1953      - turned off sponge layer by default
1954      - changed argument list of OBCS_CALC to myTime+deltaTclock
1955      - fixed about 35 bugs in obcs_external_fields_load
1956    
1957    checkpoint55c_post
1958    o obcs stuff
1959      - new runtime flags useOBCSprescribe, useOBCSbalance
1960      - re-arranged obcs_calc
1961      - moved exf_getobcs to obcs_prescibe_read
1962        obcs_prescibe_read is called after ORLANSKI stuff
1963        and independent of it (executable can contain all).
1964      - updated obcs_check
1965      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1966        These may be necessary only if tangential velocities are
1967        prescribed at OB, not sure, needs testing.
1968    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1969      which simplifies the calls and passes the ifc check-bounds test
1970    
1971    checkpoint55b_post
1972    o add a 2D scalar, Z location, exchange_2 routine.
1973    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1974      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1975      affects advect_cs results (for the wrong reason): update output.txt
1976    o use a more standard discretization for biharmonic viscosity ;
1977     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1978      affects results of dome set-up: update output.txt
1979    o fix gad_advection.F (CubedSphere part), back to version 1.23
1980    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1981    
1982    checkpoint55a_post
1983    o merged code to
1984      * prescribe/read time-dependent open boundaries
1985        (works in conjunction with exf, cal)
1986      * sponge layer code for open boundaries
1987      * each boundary N/S/E/W now has its own CPP option
1988        (healthy for the adjoint)
1989    
1990    checkpoint55
1991    o up-to-date adjoint of previous breaks
1992      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1993      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1994      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1995      - carbon: * remove tr1-related adjoint verification
1996                * add ptracer as control variable
1997    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1998      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1999    
2000    checkpoint54f_post
2001    o in verification/carbin/ remove experiment related to
2002      ALLOW_PASSIVE_TRACER (array tr1 etc)
2003      code_ad/ input_ad/ results_ad
2004    
2005    o add two new packages
2006      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2007        + subject to optimization (memory)
2008      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2009        + subject to reordering (many GOTOs in the original code)
2010        + so far opps is called for every (i,j) point, and then operates in
2011          the vertical; one may want to reorder the scheme in order operate in
2012          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2013          fields)
2014    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2015      - all verification tests compile and run with linux_ia32_g77
2016      - defaults are compatible with current input files--nothing
2017        should change if you were not previously using MNC
2018      - MNC output has been added in numerous places (eg. timeave)
2019        but there are still a few writes not yet do-able with MNC
2020        (this is in progress)
2021      - flags now allow for either/or/both use of MDSIO and MNC and
2022        documentation will soon follow
2023      - numerous small formatting cleanups for ProTeX
2024    o add version info (via BUILD_INFO.h) to MNC and stdout
2025    
2026    checkpoint54e_post
2027    o add two new packages
2028      - pp81 (Packanowski and Philander, 1981), Richardson number and
2029        stratification dependent mixing
2030      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2031      - these scheme operate in a similar manner as KPP (without ghat, of
2032        course), however there is only one diffusivity that is used for both
2033        temperature and salinity (and passive tracers)ç
2034    o add offline package
2035    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2036      provided by Stephanie Dutkiewicz
2037    o genmake2: add ability to search for C compilers and cleanup test output
2038      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2039    
2040    checkpoint54d_post
2041    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2042    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2043      leading to additional shift by 5 days each year of integration
2044       (i.e. leading to considerable offset over the years)
2045    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2046    o start with no AB and no initial filtering (staggerTimeStep):
2047      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2048    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2049      (external loading & cpl import/export stay in forward_step.F)
2050    o update coupling interface to work with new staggerTimeStep
2051    o change MDSIO ptracers_pickup.
2052    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2053    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2054    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2055    
2056    checkpoint54c_post
2057    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2058      this affects (truncation error) output.txt of test-exp:
2059       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2060    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2061    o change Qnet to always be the net heat flux, (+upward).
2062      affects (truncation error) output of natl_box exp.: updated
2063    o define the max number of passive tracers in PTRACERS_SIZE.h
2064    o start to test mnc routinely in exp0
2065    o add sea-ice loading (sIceLoad) as a new forcing field.
2066    
2067    checkpoint54b_post
2068    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2069       impressive on Altix and Opteron systems)
2070    o diagnostics can now write NetCDF files through the mnc package
2071    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2072    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2073    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2074      affects (truncation error) output of lab_sea & natl_box exp.: updated
2075    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2076    
2077    checkpoint54a_post
2078    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2079    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2080    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2081    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2082      + internal_wave (shift in writing cg2d_ini_res)
2083    checkpoint54a_pre
2084    
2085    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2086      - modified verification/lab_sea and natl_box_adjoint accordingly
2087    
2088    checkpoint54
2089    checkpoint53g_post
2090    o prepare splitting of thermodynamics: store convect.counter in common block
2091    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2092      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2093    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2094    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2095    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2096    o restore adjointability
2097    
2098    checkpoint53f_post
2099    o modifications that affect AIM experiment results (update output.txt):
2100      - no advection of S at top interface Nr (pkg/generic_advdiff)
2101      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2102    o AIM pkg:
2103      - include stability function into surf.Flux derivative relative to Tsurf
2104      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2105    
2106    checkpoint53e_post
2107    o merged cylindrical coord configuration
2108    o added rotating_tank experiment
2109    checkpoint53e_pre
2110    
2111    checkpoint53d_post
2112    o faulks upgraded: re-generate output.txt that have changed:
2113       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2114    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2115    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2116    o added Sadourny discretization of Coriolis
2117      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2118      - re-enabled use of omega3 (useAbsVorticity)
2119    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2120      vector-invariant equations
2121      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2122    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2123      hopefully without new bugs
2124      - still to do: biharmonic friction for non-hydrostatic w
2125    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2126    o regenerated output for global_ocean_ebm (using -ieee)
2127    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2128      of mom_common/
2129      - simple re-arrangement of instructions within computing loop
2130    checkpoint53d_pre
2131    
2132    checkpoint53c_post
2133    o new version of coupler for AIM+thSIce and Ocean models
2134     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2135     - land: change Evaporation of snow
2136     - aim with thSIce: fix bug in snow-precip.
2137    o changes to calc_gw.F
2138     - bug fix for w^2 term near the bottom boundary
2139     - (hopefully) improve the lateral slip boundary condtions for use with
2140        partial/looped cells
2141      - because the bug fix changes two verification experiments anyway (exp5
2142        and plume on slope), change the lateral boundary condition from half slip
2143        to the value of no_slip_sides
2144    o ebm package wasnt quite up to the parallel task. Fixed that.
2145    o Adjoint of EBM package + verification
2146      * TLM OK
2147      * ADM not sufficient accuracy yet (needs further testing)
2148    
2149    checkpoint53b_post
2150    o Commiting new energy balance model to repository
2151      * package is pkg/ebm
2152      * verif. is verification/global_ocean_ebm
2153      * references are in ebm_driver.F
2154    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2155    C        Global thermohaline circulation. Part I:
2156    C        Sensitivity to atmospheric moisture transport.
2157    C        J. Climate 12(1), 71-82
2158    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2159    C        Global thermohaline circulation. Part II:
2160    C        Sensitivity with interactive transport.
2161    C        J. Climate 12(1), 83-91
2162    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2163    C        Destabilization of the thermohaline circulation
2164    C        by atmospheric eddy transports.
2165    C        J. Climate 7(12), 1870-1882
2166    o Will need long integration testing.
2167    checkpoint53b_pre
2168    
2169    o created pkg/mom_common in preparation for variable viscosity code
2170    o renamed and split ini_mnc_io
2171    o pkg/land: only liquid water can diffuse or run-off
2172    o AIM using land: soil wetness availability account for snow
2173    o added printMapIncludesZeros to EEPARMS namelist
2174    
2175    checkpoint53a_post
2176    o restore TAMC compatiility for exf_constants.h
2177      (no usage of _d in .h)
2178    o Additional storing in KPP in an attempt to fix
2179      TAMC problem with adjoint of KPP code.
2180      (no success...)
2181      Identical code works fine with TAF.
2182    o Fixed verification/natl_box_adjoint experiments.
2183      Initial conditions for Experiments 4 and 5 are now
2184      set to "SEAICE_initialHEFF=0", which is more reasonable,
2185      and hence gives results closer to that of Experiment 2.
2186      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2187    
2188    checkpoint53
2189    o stable checkpoint with up to date adjoint
2190      TLM tests only run for 1st grdchk at the moment. Its unclear if
2191      this is a code problem or a problem with resetting code for g_
2192      variables that is being autogenerated wrong.
2193      Otherwise:
2194       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2195       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2196         are both still in chaos following their security messes.
2197    
2198    checkpoint52n_post
2199    o various build (mostly genmake2) changes including:
2200      - ability to build/run more easily within Cygwin and MacOS X
2201      - more complicated Makefiles with a stronger dependence on Gnu Make
2202    o pkg/seaice modifications
2203      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2204        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2205        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2206      - changed proxy for geostrophic velocity and updated
2207        verification/lab_sea/results/* accordingly
2208      - removed ADI dynamic solver from pkg/seaice
2209      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2210        they caused a segmentation fault under certain circumstances
2211      - removed unused field WATR
2212    o bug fix in exf-package:
2213      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2214         now reflect that.
2215    o small fixes in the cal-package:
2216      - set reference date to first of January for the 'model'-calendar
2217      - failing of cal_CheckDate in cal_FullDate now actually results in a
2218        warning
2219    o small modifications in exf-package to increase flexibility:
2220      - change climtempfreeze from a constant to a runtime parameter that
2221        is specified in data.exf_clim (default = -1.9)
2222      - introduce runtime parameter windstressmax (default = 2.0) that is
2223        specified in data.exf
2224    o fix in pkg/thsice:
2225      - update Evap (Tsf changes) to be consistent with Latent heat flux
2226      - maintain snow precipitation unchanged (even if Tsf >=0).
2227     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2228    
2229    checkpoint52m_post
2230    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2231      this does not change any of the results, because myIter=0 in swfrac always
2232      lead to jwtype=2 (the default anyway), but the call makes little sense
2233      as a default
2234    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2235    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2236      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2237    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2238    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2239    o extending useSingleCpuIO option to work with new exch2 I/O format
2240      - old-style, missing-tile I/O is still accessible by defining CPP
2241        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2242    o monitor package can write to NetCDF files and/or STDOUT
2243    o fix re-definition bug in MNC_GRID_INIT_ALL()
2244    o doc/api_reference added
2245      - a framework for building an API Reference Manual using all
2246        the "protex" comments embedded in the code
2247      - see pkg/generic_advdiff, pkg/mnc for examples
2248    o MNC:
2249      - make myThid the last argument for all subroutines
2250      - new default for the grid files: NO halos
2251      - add useMNC and other run-time flags
2252      - separate per-file-group handling of the unlimited dimension
2253      - early initialization of MNC w/ flags read at the eeboot stage
2254        and lookup tables set in initialize_fixed
2255      - write all MNC output to a freshly-created directory
2256    o thermodynamics sea-ice (thsice) is now tested with testreport.
2257    o test exp. advect_cs: use the standard cs32 grid ; update output.
2258    o Added functionality to grdchk:
2259      pick global i,j,k position (or nearest wet) where to perform check.
2260    
2261    checkpoint52l_post
2262    o new land formulation:
2263      a) use ground enthalpy as prognostic variable to ensure exact
2264         energy conservation.
2265      b) account for water temperature and for latent heat of freezing
2266         in all processes (rain, run-off, ground storage)
2267      c) compute surface and ground temperature implicitly.
2268    o aim_v23 modification for new land model:
2269      a) Treat separately land / ocean / sea-ice surface fluxes
2270         to allow implicit computation of land & sea-ice surface temp.
2271      b) add snow precipitation.
2272    checkpoint52l_pre
2273    
2274    o fix problem (when 1 tile is empty) in min/max monitor.
2275    o fix bug in timeAve (u,vZetatave in common block)
2276    o no restoring terms under ice for pkg/seaice
2277    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2278    o bug fix for pkg/seaice pickups
2279    o change MNC call locations and add coordinate attributes
2280    o mask vorticity at the corner ; affects global_ocean.cs output
2281    o fix ini_curvilinear_grid ; test CS experiments with mpi
2282    o aim.5l_cs: modify sea-ice fraction input file ; update output
2283    o exf: Adding simple range check routine for exf fields after read
2284    
2285    checkpoint52k_post
2286    o removed top-level directory "diags"
2287      - we migrated these functions to pkg/timeave a long time ago
2288    o fixed bug introduced in pkg/monitor
2289    o accuracy ctrlprec = 32 insuffient for gradient checks using
2290      averaged fields (I/O via cost_averages)
2291      -> use ctrl.h in active_file*.F to control I/O precision.
2292    o paramter list of CALL ADTHE_MAIN_LOOP
2293    o added initial do_the_model_io to ecco
2294    o set all ...Freq to zero after cost_final
2295      taveFreq, dumpFreq, pChkptFreq
2296    o MAIN and ECCO differentiability restored
2297    
2298    checkpoint52j_post
2299    o fix nchklev in tamc.h for global_ocean...
2300    o Bringing flow and store directives up-to-date
2301    o Really weird thing!
2302      call do_the_model_io from the_main_loop with parameters
2303      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2304      TAF places a faulty re-call of initialise_varia
2305      after cost_final call which should not be there!
2306    checkpoint52j_pre
2307    
2308    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2309      error messages
2310    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2311    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2312      debug output
2313    o modfied mdsio_writefield.F to handle non-global files under exch2
2314    o update AIM Cubed-Sphere exp (aim.5l_cs):
2315      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2316    o update AIM Equatorial Channel exp:
2317      use standard aim_v23 pkg and change the SST fields to be more realistic.
2318    o globalFile now works with exch2
2319    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2320      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2321    o limit timeave output for hi-res integrations
2322    
2323    checkpoint52i_post
2324    o removed CPP_EEOPTIONS.h from verification/*/code
2325    o updated the tiling for global_ocean_pressure
2326    checkpoint52i_pre
2327    
2328    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2329      the old pkg/aim).
2330    
2331    checkpoint52h_pre
2332    o shortened offending lines in exch2_send_rx?.template
2333    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2334    o genmake2: add build & execute test for NetCDF code
2335    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2336      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2337    o added useSingleCPUIO flag to monitor.F and mon_out.F
2338    o added temporary hack for sea-ice dynamics on the cube:
2339      metric terms are ignored and it is assumed that
2340      there is no sea-ice on cube faces 1, 2, 4, and 5.
2341    
2342    checkpoint52f_post
2343    o added exch2 cube routines to pkg/exch2
2344    o modified hs94.cs-32x32x5 to use it
2345    o added new grid files to hs94.cs-32x32x5
2346    checkpoint52f_pre
2347    
2348    checkpoint52e_post
2349    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2350      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2351    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2352      to work with implicit vertical advection and AB ;
2353    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2354    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2355     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2356    checkpoint52e_pre
2357    
2358    o fix bug in impldiff when Nr=1 or Nr=2.
2359    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2360    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2361    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2362      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2363    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2364    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2365    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2366    
2367    checkpoint52d_post
2368    o re-tiled many expts to allow comparison in multi-processor mode
2369      - updated output accordingly
2370      - changed hs94.128x64x5 to use intial T from file rather than use the
2371        random number generator
2372    o add infrastructure in model routines for fizhi and gridalt packages
2373    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2374    o changes to permit hi-res, cubed-sphere, configuration
2375      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2376      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2377      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2378        of surface winds for the cube
2379      (A verification experiment, based on global_ocean.cs32x15, but with
2380       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2381       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2382       complete with example surface forcing files and matlab scripts to look
2383       at the output and compare it with that of global_ocean.cs32x15.)
2384    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2385       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2386       to conform to the common rule.
2387    o check-in the first version of the coupler + interfaces for multi-components
2388       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2389       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2390       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2391       - ocean and atmos. share the same horizontal grid (no interpolation).
2392       - exchanges between component and coupler is done in forward_step
2393    o new verification experiment, cpl_aim+ocn:
2394       coupled ocean - AIM atmosphere on cs32 grid.
2395    
2396    checkpoint52d_pre
2397    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2398    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2399    
2400    checkpoint52c_post
2401    o Fixing OPTIONS files for use of exf:
2402      - ALLOW_ECCO not needed
2403      - ECCO_CPPOPTIONS.h should not be included from
2404        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2405        as has been the case in the past
2406      - All cal/exf related options are currently set in
2407        single header file. Should remain so until we
2408        agree on a consistent new policy.
2409    o Removed all CPP options for cal package.
2410      cal has no more CPP options.
2411    o modified STOREs in GAD_ADVECTION
2412    o corrected key comp. for passkey
2413    
2414    checkpoint52b_post
2415    o new version: "thsice" of thermodynamic sea-ice pkg:
2416     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2417     - modify fluxes but do not change theta directly;
2418     - light cleaning of bulk_force pkg (still needed with thsice).
2419     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2420       + output_thsice.txt to test thsice & bulk_force pkgs.
2421    o put back grid & coriolis monitor output.
2422    checkpoint52b_pre
2423    
2424    o call "do_the_model_io" at the beginning (=> dump initial state)
2425    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2426    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2427      (need info on NUMBER_OF_PTRACERS)
2428    o missing PTRACERS headers in some routines
2429    o default tamc.h in pkg/autodiff supposed to crash
2430      to ensure proper customization
2431    
2432    checkpoint52a_post
2433    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2434      - moved surfaceTendencyTice from pkg/seaice to main code
2435      - subroutine FREEZE_SURFACE now limits only surface temperature
2436        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2437        => new output.txt for global_ocean.cs32x15 & global_with_exf
2438      - keep the old version of FREEZE for backward compatibility;
2439        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2440      - corresponding modifs for TAF directives
2441    o added surface flux output variables to TIMEAVE_STATVARS
2442    o time-averaged output for pkg/ptracers
2443    o fix problem with ECCO-related divided adjoint
2444      snapshot file was missing some ad-variables,
2445      but no warning issued by TAF
2446    
2447    checkpoint52a_pre
2448    o some bug fixes for #undef REAL4_IS_SLOW
2449    
2450    checkpoint52 = ecco_c52_e35
2451    o after testing adjoints of checkpoint51u_post
2452    
2453    checkpoint51u_post
2454    o this is the post-merge tag of the ecco-branch
2455      (needs another clean checkout and re-testing)
2456    o various natl_box_adjoint configs and results
2457      but no input fields
2458    o obcs adjoint not yet merged!
2459    o adding ECCO global 1x1 and 2x2 degree configs
2460    o updated/extended some store directives for seaice
2461    o pkg/ecco now containes ecco-specific part of cost function
2462    o top level routines the_main_loop, forward_step
2463      supersede those in model/src/
2464      previous input data.cost now in data.ecco
2465      (new namelist ecco_cost_nml)
2466    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2467    
2468    checkpoint51t_post
2469    o this is the pre-merge tag of the ecco-branch
2470    
2471    checkpoint51s_post
2472    o cleanup: removed various obsolete #define-s
2473    o pkg/grdchk
2474      - renamed 'ph-grd 3' to 'grad-res'
2475      - merged from ecco-branch
2476        (remaining bug fixes for obcs gradient checks)
2477      - additional high-precision output for testreport
2478        (grep for 'precision_grdchk_result')
2479    
2480    checkpoint51r_post
2481    o cleaned up or removed CPP_OPTIONS.h files
2482    o updated results for some of the tests to reflect the new
2483      optfiles (-ieee: -O0 instead of -O3)
2484    
2485    checkpoint51q_post
2486    o cd_code:
2487      - moved cd_scheme.F -> cd_code_scheme.F
2488      - separate read_checkpoint from cd_code_ini_vars.F
2489      - separated cd_code part from write_checkpoint
2490      - updated AD_SOURCE, generated .flow
2491      - added CD_CODE_VARS.h to the_main_loop
2492      - Moving cd_code specific store dir.s to pkg/cd_code
2493    o ctrl package totally restructured
2494      - pack/unpack now optional and decoupled from
2495        xx_/adxx_ I/O
2496      - ctrl_pack/unpack cleaned
2497        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2498      - confined inclusion of AD_CONFIG.h to where necessary.
2499    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2500    
2501    checkpoint51p_post
2502    o create initial cd_code package
2503      - WARNING: the initialization of fields within packages
2504        is broken because INI_FIELDS (where READ_CHECKPOINT is
2505        called) is called *before* PACKAGES_INIT_VARIABLES.
2506        This seems to be backwards since
2507        1) its important to initially zero the entire field including
2508           the "halo" region
2509        2) zeroing needs to be done *before* reading pickup info
2510           and the pickup call might or might not happen in any
2511           particular run
2512      - this needs an overhaul for R2
2513    o cleanup verification/*/code/GMREDI_OPTIONS.h
2514    o cleanup testreport
2515    
2516    checkpoint51o_post
2517    o bringing AD-related verif's up to date with genmake2
2518      - carbon/
2519      - global_ocean.90x40x15/
2520      - hs.94.1x64x5/
2521      - (front_relax/ )
2522    o (more) consistent directory structure for AD-related verif.'s
2523    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2524    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2525    o bug fix in find_alpha.F for MDJWF:
2526      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2527        change rho -> rho-rhoConst
2528      - replace call find_rho to find_rhonum
2529    o initialisation of rFlx extended to full array (required by TAF)
2530      and shifted to thermodynamics
2531    o removed PTRACERS.h in ptracers routine
2532    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2533    o Correcting initialisations for fVerU, fVerV.
2534    o helping TAF to recognize dependency on kUp for
2535      fVerU, fVerV
2536    o Replacing delZ by delR in pkg/ctrl/
2537    checkpoint51o_pre
2538    
2539    o undid all of cp51 pending some cleanups and discussion
2540    o added the [#include "AD_CONFIG.h"] statement to all files that need
2541       it for adjoint/tl #defines
2542     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2543     o removed tools/genmake since it no longer works
2544    
2545    checkpoint51n_post
2546    o modifications to make FREEZE flux visible to pkg/kpp
2547      - moved surfaceTendencyTice from pkg/seaice to main code
2548      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2549      - subroutine FREEZE now limits only surface temperature
2550        (this means new output.txt for global_ocean.90x40x15,
2551         global_ocean.cs32x15, and global_with_exf)
2552    o added surface flux output variables to TIMEAVE_STATVARS
2553    
2554    checkpoint51n_pre
2555    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2556    o added [#include "AD_CONFIG.h"] to all files that use the following
2557      defines:
2558      - ALLOW_ADJOINT_RUN
2559      - ALLOW_TANGENTLINEAR_RUN
2560      - ALLOW_ECCO_OPTIMIZATION
2561    
2562    checkpoint51m_post
2563    o incorporating changes to get TAMC/TAF working in genmake2
2564      - added new TAMC/TAF targets to the Makefile
2565      - various cleanups related to package handling
2566      - these changes should have no impact on the forward model
2567    
2568    checkpoint51l_post
2569    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2570     - faster algorithm for cal_addtime.F
2571     - higher precision arithmetic, where needed
2572     - pkg/exf *startdate variables changed from calendar date to
2573       model integration time
2574    
2575    checkpoint51l_pre
2576    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2577    o enable to apply restoring on S & T only in a latitude band.
2578    o update output (external_forcing_surf modif. change truncation errors)
2579       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2580    
2581    checkpoint51k_post
2582    o change default to: useNHMTerms=.FALSE.
2583     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2584       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2585     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2586        exp1, ideal_2D_oce
2587     - change data file of oceanic exp (leave the results unchanged for now)
2588       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2589    o set gravitySign automatically according to the vertical coordinate used
2590      (and change sign: back to "logical" value: +1 when R increases downward)
2591    o added an include barrier to the default CPP_OPTIONS.h and
2592      removed the #include "PACKAGES_CONFIG.h" from it
2593    o fix a bug in mom_fluxform (from chk51j_post)
2594    
2595    checkpoint51j_post
2596    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2597    o adjusted some flow directives (dynamics, thermodynamics)
2598    o added cubed-sphere case to test cost function
2599    o heckpoint_lev?_directives.h now include
2600      pkg-specific directives, whenever those are enabled.
2601    o Moving pkg-specific flow directives to corresponding pkg
2602      Moving pkg-specific differentiation list to corresponding pkg
2603      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2604      ---> conventions are
2605           - pkg_ad.flow
2606           - pkg_ad_diff.list
2607           - pkg_ad_check_lev?_dir.h
2608    
2609    checkpoint51i_post
2610    o merge of the branch-genmake2
2611      - knowingly breaks the older genmake
2612      - automatic generation of all ALLOW_${PKG_NAME} defines
2613      - new testreport supersedes older testscript
2614    o large number of package inclusion and header cleanups
2615    checkpoint51i_pre
2616    
2617    o new output for adjoin of global ocean vector invariant
2618    o fix for checkpoint of thermodynamic seaice and bulk_force
2619    o Steph gchem various cleanups
2620    
2621    checkpoint 51h_pre
2622    o fixed some single quotes
2623    o modify gchem pkg to be more versatile
2624    o modifications to clean up dic pkg
2625    o add pkg/cfc
2626    
2627    checkpoint51g_post
2628    o provide links for ARPACK and ADM*TLM
2629    o start removing verification/vero/
2630    o update AD-related stuff
2631      (in particular some IF-statements in model/src/ routines)
2632    o adding to verification/global_ocean.90x40x15/ adjoint of
2633      vector invariant setup
2634    
2635    checkpoint51f_post
2636    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2637    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2638      of tracer Green's fucntions for ocean inversion project.
2639    
2640    checkpoint51f_pre
2641    o Added on-the-fly spatial interpolation capability
2642        "USE_EXF_INTERPOLATION" to pkg/exf.
2643      - This is a temporary Cartesian-grid hack until
2644        the super-duper ESMF coupler becomes available.
2645      - See verification/global_with_exf/README for usage example.
2646      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2647        flags and modified pkg/seaice accordingly.
2648    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2649        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2650        non-local transport term.
2651    
2652    checkpoint51e_post
2653    o pkg/mom_vecinv:
2654      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2655      - add time-ave diagnostic of vorticity advection.
2656    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2657    o atmospheric geopotential: - include water vapor effect;
2658                                - use p^kappa in p* scaling.
2659    o land pkg: read initial state from files.
2660    o AIM : add stratospheric drag in the upper level
2661    
2662    checkpoint51d_post
2663    o change function ILNBLNK (=> last non-blank char.) to return zero
2664      (instead of the string length) when the string. char is empty
2665    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2666    o modif's to restore TAMC compatibility
2667      - avoid "_d" constructs in PARAMETER declarations
2668      - avoid interrupting lines by comment lines
2669    o Use cluster local disks for purely local I/O
2670      vs. globally visible disks needed for ctrl stuff
2671      (merged from ecco-branch)
2672      - new active_file_loc... and mdsio_..._loc routines
2673      - affected packages: autodiff, ctrl, grdchk, mdsio
2674    
2675    checkpoint51c_post
2676    o introducing integer flag debugLevel
2677      - debLevZero: suppress all output
2678      - debLevA: standard
2679      - debLevB: equivalent to current debugMode=.TRUE.
2680    o introducing pathname variable mdsioLocalDir for mdsio
2681      that can be specified at runtime
2682      (relevant for cluster I/O to local disk)
2683    `
2684    >>>checkpoint51b_post
2685    adjoint of ptracers
2686    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2687    o extended state in checkpoint_lev?, etc.
2688    o alternative ctrl/cost with tr1 or ptracer
2689    o new comlev1_bibj_ptracers
2690    o new ptracers.flow
2691    o made ptracers_forcing same as external_forcing_s
2692    o added verification for adjoint with ptracers
2693      - adm. grdchk fail so far
2694      - tlm. grdchk OK
2695      - checked tapelev/comlev recomputations: OK
2696    <<<checkpoint51b_pre
2697    
2698    checkpoint51a_post
2699    o added code for biogeochemistry package
2700      - new pkgs: dic, gchem
2701      - new subroutine in ptracers
2702    o modify code for biogeo packages
2703      - in model/src and pkg/ptracers
2704    
2705    checkpoint51
2706    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2707      - autodiff, ctrl, exf, grdchk, seaice
2708      kept separate packages
2709      - cost, ecco, obcs
2710    o updating verification/internal_wave, verification/lab_sea
2711      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2712    
2713    checkpoint50i_post
2714    o Preparing next differentiable checkpoint and sync
2715      of MAIN vs. ecco-branch
2716      - 1st step: this one is differentiable
2717      - 2nd step: next(! not this) checkpoint will have updated packages
2718                  from ecco-branch)
2719    
2720    checkpoint50h_post
2721    o new package "land": provide surface BC for AIM.
2722    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2723    o AIM: use true log-P extrapolation for near surface temp (= as in
2724        F.Molteni paper) ; update aim.5l_cs output.
2725    o New variable in PARM03 for more flexible pickups
2726    o somewhat cleaned package initialisation sequence for
2727      ctrl/ cost/ ecco/ in packages_... routines
2728    
2729    checkpoint50g_post
2730    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2731      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2732      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2733        made the default because of faster convergence than ADI
2734    
2735    checkpoint50f_post
2736    o exf totally restructured
2737      - replaced all exf_set_ routines by one generic exf_set_gen.F
2738        and made sure it's still differentiable
2739      - split exf_getffields.F into new exf_bulkformulae.F
2740      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2741      - updated adjoint/makefile and relevant verif. accordingly
2742    
2743    checkpoint50f_pre
2744     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2745          + change Evap over land. (update aim.5l_cs output)
2746     o added missing .cvsignores and made uniform across expts
2747     o changed configuration of tidal_basin_2d expt
2748     o added pkg/debug functions for tracing code in fatal crashes
2749     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2750     o new fn in pkg/monitor to stop model if solution grows too big
2751     o removed lots of single quotes from comments
2752    
2753    checkpoint50e_post
2754    o make KPP work with PTRACERS
2755     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2756       nearly a copy of kpp_transport_s
2757     - there is no analogue to SurfaceTendencyS, so I have to use
2758       gPtr(of the surface layer) instead
2759    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2760    checkpoint50e_pre
2761    
2762    checkpoint50d_post
2763    o change kpp output from multiple-record state files to single-record state
2764      files analogous to write_state.F
2765    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2766      analogous to the cg2d-related output.
2767    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2768      so that writing to internal file fn (with length 512) fails.
2769    checkpoint50d_pre
2770    
2771    checkpoint50c_post
2772    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2773    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2774    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2775    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2776    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2777    
2778    checkpoint50c_pre
2779    Merging from release1_p13:
2780    o bug fix for pkg/seaice dynamic solver
2781    o Added SEAICE_initialHEFF to pkg/seaice
2782    
2783    checkpoint50b_post
2784    o store u*,v* in gU,V instead of in guNm1,gvNm1
2785    o in order to put the momForcing out of the Adams-Bashforth:
2786      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2787      to timestep.F
2788    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2789    o re-generate output for highly sensitive test-exp:
2790       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2791    
2792    checkpoint50b_pre
2793    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2794    o corrected CPP option mismatch in exf_Bulk... functions for case
2795      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2796    
2797    checkpoint50a_post
2798    o Bug fix for merging between c50 and KPP.
2799      ikey was passed from thermodynamics to kpp_calc via
2800      common block rather than being recomputed in kpp_calc,
2801      in contradiction with new key itdkey.
2802      New key ikppkey created, and tamc.h headers updated.
2803    
2804    checkpoint50
2805    - 2nd step of merge with ecco-branch:
2806      merge changes in ecco-branch back into main trunk
2807    - bug fix in find_alpha
2808    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2809    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2810    - merged some sliced AD support routines
2811    
2812    checkpoint49
2813    merged from ecco-branch:
2814    o exf:
2815      - Enable initialisation of forcing fields to constant
2816        (runtime) values.
2817      - in exf_getffields.F
2818        Reduce i-/j-loop to interior domain, discarding overlaps.
2819        That also fixes wrong TAF-key computations for key_1, key_2
2820        with bulf formulae.
2821      - exf_init.F modify #ifdef for exf_init_evap
2822      - exf_getffieldrec.F, ctrl_getrec.F
2823        The following INT-usages are not safe:
2824          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2825          fldcount = int(fldsecs/fldperiod) + 1
2826        and were modified.
2827    o autodiff: checkpoint_lev...
2828      - updated storing for bulk formulae (some arrays were missing)
2829      - added state for seaice package
2830      - synchronized with main branch
2831    o DIVA:
2832      Modif.s in
2833      - the_main_loop.F
2834      - the_model_main.F
2835      and added cost_final_restore.F cost_final_store.F
2836      o With these changes, it is possible to fully separate
2837        the first forward run to compute the cost function (mdthe_main_loop)
2838        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2839        into separate model executions.
2840        This enables better tuning of DIVA to given queue sizes.
2841      o Loss of cost function value in consecutive DIVA runs is
2842        fixed by storing to 'costfinal' file.
2843      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2844        beginning/end of adjoint integration is accounted for.
2845      The current changes apply to TAF-1.4.26.
2846      TAF has one remaining bug, requiring one manual change
2847      (see MITgcm manual).
2848    o cal: synchronized between MAIN and ecco-branch
2849    
2850    checkpoint48i_post
2851    o Changes to restore differentiability of code w.r.t. previous tag
2852      (mostly adding new routines to make list and replacing
2853      pressure by totPhiHyd).
2854    o Updated and merged grdchk package
2855      - has both ADM and TLM checks
2856      - works for single- and multi-proc.
2857      - output cleaned
2858      - worked successfully for parallel DIVA
2859    o genmake:
2860      - Adding -platform=SP4
2861      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2862    o Modif. for DIVA:
2863      ctrl_unpack should not be called in intermediate DIVA interval.
2864      (similar thing would apply for active files such as
2865      tbar, sbar, psbar, which should not be reinitialised;
2866      only relevant for ecco-branch)
2867    
2868    checkpoint48h_post
2869    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2870    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2871    o Added SEAICE_initialHEFF to pkg/seaice
2872    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2873    
2874    checkpoint48g_post
2875    --- EOS:
2876    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2877      store total Potential in totPhyHyd for diagnostics & EOS.
2878    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2879    --- Pressure/geopotential gradient:
2880    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2881    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2882      ( changes results of global_ocean_pressure )
2883    o NLFS + z-coord.: add eta*Rho' contribution.
2884    o accurate phiHyd when using interface-W at the middle between 2 centers
2885     ( changes results of ideal_2D_oce )
2886    o includes r* 2nd term in potential gradient.
2887    
2888    checkpoint48f_post
2889    Merging from release1_p12:
2890    o Modifications for using pkg/exf with pkg/seaice
2891      - improved description of the various forcing configurations
2892      - added basic radiation bulk formulae to pkg/exf
2893      - units/sign fix for evap computation in exf_getffields.F
2894      - updated verification/global_with_exf/results/output.txt
2895    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2896      (SBO) core products, including oceanic mass, center-of-mass,
2897      angular, and bottom pressure (see pkg/sbo/README.sbo).
2898    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2899      to avoid negative values in shallow regions.
2900      - updated verification/natl_box/results/output.txt
2901      - updated verification/lab_sea/results/output.txt
2902    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2903    o Added useSingleCpuIO option (see PARAMS.h).
2904    o Updated useSingleCpuIO option in mdsio_writefield.F to
2905      work with multi-field files, e.g., for single-file pickup.
2906    o pkg/seaice:
2907      - bug fix in growth.F: QNET for no shortwave case
2908      - added HeffFile for specifying initial sea-ice thickness
2909      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2910    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2911      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2912    o pkg/seaice:
2913      - adjoint-friendly modifications
2914      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2915    
2916    checkpoint48e_post
2917    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2918    o dynamics: change definition of computational domain & adapt mom_fluxform
2919      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2920    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2921        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2922        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2923        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2924        inverted_barometer solid-body.cs-32x32x1
2925      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2926    
2927    checkpoint48d_post
2928    o in preparation for r*:
2929     a) use pre-computed gradient of hydrostatic potential:
2930        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2931     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2932        => affects results of glob_oce_pressure (different truncation error)  
2933      update output.txt of ideal_2D_oce & global_ocean_pressure
2934    
2935    checkpoint48d_pre
2936    o in preparation for r*:
2937      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2938      pass the 2 comp. of the grad. as arguments to momentum S/R.
2939      but for the moment, only used if it does not change the results.
2940    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2941    
2942    checkpoint48c_post
2943    Modifications in treatment of initial flux forcing controls
2944    to avoid extra storing of flux fields.
2945    
2946    checkpoint48c_pre
2947    o Added tidal_basin_2d experiment (currently 1D!)
2948    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2949    
2950    checkpoint48b_post
2951    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2952     (modification to pressure gradient not yet implemented)
2953    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2954      (for U & V) that are used for vertical advection of momentum.
2955    
2956    checkpoint48a_post
2957    o In preparation for r*, use temp. array to compute vertical transport
2958       in flux-form momentum pkg. => change results of few test-exp.
2959      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2960                        lab_sea, natl_box & plume_on_slope
2961    
2962    checkpoint48
2963    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2964    
2965    checkpoint47j_post
2966    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2967    o moved adexch from forward_step to addummy_in_stepping
2968    o added exch in ctrl_map_...
2969    o aveFreq.=0. at end of cost_final to avoid overwrite in
2970      reverse checkpointing loop
2971    o Yet more changes in gmredi:
2972      * adgmredi_calc_tensor
2973        avoiding all recomputation of gmredi_slope_limit
2974      * adgmredi_x/y/rtransport
2975        added flag for excessive storing to avoid recomp. of
2976        u/v/rtans, dTdx/y/z
2977        -> this is not really necessary and very memory-consuming
2978      * adgmredi_slope_psi:
2979        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2980      * gmredi_slope_limit
2981        re-activated full calculation of taperfct for case 'ac02'
2982    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2983    
2984    checkpoint47i_post
2985    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2986    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2987      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2988    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2989    o gmredi: fix few bugs.
2990    
2991    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2992    This will be a good checkpoint to plug into the ecco-branch.
2993    o few modif.'s to get latest version adjointed
2994      (mainly kick out code in ini_linear_phisurf)
2995    o modif's to run adjoint with exactConserv
2996    o case GM_BOLUS_ADVEC should be cleaned
2997      S/R gmredi_slope_psi should be cleaned
2998    o verification/carbon now has exactConserv=.TRUE.
2999    
3000    checkpoint47g_post
3001    o time-average AIM output: becomes independent from statvars time-average
3002      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3003    o After TAF bug fix:
3004      Tested adjoint of gmredi package.
3005      Tests were done with checkpoint47 rather than with latest
3006      checkpoint47f_post since the latter is broken for the adjoint
3007      verification/carbon/ contains both ADM and TLM gradient checks.
3008    Here they are, before they get changed/lost/stolen.
3009    Mostly modif.'s to fix numerical sensitivities.
3010    Gradient checks OK for
3011    - GM_taper_scheme:
3012      * clipping
3013      * ac02
3014      * linear
3015      * glw91
3016      * dm95
3017      * ldd97
3018    - GMREDI_OPTIONS:
3019      * GM_VISBECK_VARIABLE_K
3020      * GM_NON_UNITY_DIAGONAL
3021      * GM_EXTRA_DIAGONAL
3022      * GM_BOLUS_ADVEC
3023    in conjunction with data.gmredi parameters to be checked in
3024    in a few minutes under verification/carbon/code/
3025    
3026    checkpoint47f_post
3027    Merging from release1_p10:
3028    o modifications for using pkg/exf with pkg/seaice
3029      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3030        and SEAICE_EXTERNAL_FLUXES
3031      - pkg/exf CPP options EXF_READ_EVAP and
3032        EXF_NO_BULK_COMPUTATIONS
3033      - usage examples are Experiments 8 and 9 in
3034        verification/lab_sea/README
3035      - verification/lab_sea default experiment now uses
3036        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3037    
3038    checkpoint47e_post
3039    o created a tag prior to creating a branch
3040    
3041    checkpoint47d_post
3042    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3043      at the bottom boundary had an erroneous half slip boundary condition
3044    o added bottom drag and no slip boundary condition capabilities to
3045      oceanic pressure coordinates code
3046    o added new verification experiment global_ocean_pressure, this experiment is
3047      also described in the tutorial section of the manual
3048    checkpoint47d_pre
3049    
3050    checkpoint47c_post
3051    o Added a verification experiment for a global cubed-sphere ocean run
3052      -  verification/global_ocean.cubed32x32x30
3053      -  uses pkg/therm_seaice and pkg/bulk_forcing
3054    
3055    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3056    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3057      when using P-coordinate; only implemented for atmospheric config.
3058    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3059      NOTES: requires option NONLIN_FRSURF to be "#define".
3060    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3061    
3062    checkpoint47b_post
3063    Merging from release1_p9:
3064    o pkg/seaice
3065      - removed GOTO's and added taf directives
3066      - double precision constants to reduce the g77 (Linux)
3067        to F77 (SGI) differences reported in release1_p8
3068    o tools/genmake
3069      - added SGI options
3070    o verification/testscript
3071      - updated to that of checkpoint47a_post
3072    o verification/global_ocean.90x40x15/input/eedata
3073      - modified for SGI f77 compatibility
3074    o verification/lab_sea
3075      - added description of sea-ice model
3076      - added missing matlab routines
3077      - added test of thermodynamics parallelization
3078    
3079    checkpoint47a_post
3080    o new pkg: aim_v23
3081     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3082       for now, keep the same surface forcing as before.
3083     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3084     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3085     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3086    o add diagnostic of surface correction term in monitor output
3087    
3088    o bulk_force and therm_seaice
3089    - Two packages:  bulk_force (Bulk forcing)
3090      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3091    - Earlier integration from Stephaine Dutkiewicz
3092      and Patrick Heimbach.
3093    - Two ifdef statements for compile time,
3094       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3095    
3096    checkpoint47
3097    differentiable version of checkpoint46n_post
3098    o bug fix in quasihydrostaticterms
3099    o * "clean" adjoint code (in terms of extensive recomputations)
3100        can now be obtained for all GMREDI options (i.e. for
3101        - GM_VISBECK_VARIABLE_K
3102        - GM_NON_UNITY_DIAGONAL
3103        - GM_EXTRA_DIAGONAL
3104        - GM_BOLUS_ADVEC )
3105      * However, wrong gradient check problem remains unsolved.
3106      * New CPP options have been introduced for different
3107        tapering schemes
3108    o external_fields_load now part of differentiation list
3109    o pressure needs multiple storing;
3110      would be nice to have store_pressure at beginning or
3111      end of forward_step, e.g. by having phiHyd global (5-dim.)
3112      (NB: pressure is needed for certain cases in find_rho,
3113      which is also invoked through convective_adjustment).
3114    o recomputations in find_rho for cases
3115     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3116    o #define ATMOSPHERIC_LOADING should be differentiable
3117    o ini_forcing shifted to begining of initialise_varia
3118    o Incorporating QNVS line search routines into MITgcm
3119      (this is separate code, and therefore not under pkg)
3120      lsopt/, optim/
3121    o Updated verification/carbon/
3122      - #define GM_VISBECK_VARIABLE_K
3123      - GM_taper_scheme    = 'ldd97'    
3124    
3125    checkpoint46n_post
3126    Merging from release1_p8:
3127    o verification/natl_box:
3128      updating new external_fields_load routine
3129    o New package: pkg/seaice
3130      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3131      The sea-ice code is based on Hibler (1979-1980).
3132      Two sea-ice dynamic solvers, ADI and LSR, are included.
3133      In addition to computing prognostic sea-ice variables and diagnosing
3134      the forcing/external data fields that drive the ocean model,
3135      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3136      The implied surface heat flux is then stored in variable
3137      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3138      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3139      non-local transport term.  Because this call precedes model
3140      thermodynamics, temperature under sea-ice may not be "exactly" at
3141      the freezing point by the time theta is dumped or time-averaged.
3142      N.B.: fairly large differences in accuracy occur across
3143            different platforms/compilers; comparison between
3144            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3145            generated output gives:
3146       T           S           U           V
3147      C D M    c        m  s        m  s        m  s        m  s
3148      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3149      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3150      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3151    
3152      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3153    o GAD:
3154      - generated new common blocks to account for call of
3155        same gad routines with differing traceridentities
3156        (needed to modify tracerIdentity indices in GAD.h)
3157      - generated separate common blocks for case useCubedSphereExchange
3158        (Department of Futurology)
3159      - parameter lists to gmredi_?transport: added tracerIdentity
3160      - added new key indices to tamc.h
3161    o external_fields_load:
3162      - added this routine to TAF list
3163      - needed to make some common blocks global and additional storing
3164        along the same lines as exf package (checkpoint_lev?_directives.h)
3165    o exf:
3166      updated external forcing package
3167      - bug fixes carried over from ecco-branch
3168        (missing OBCS_OPTIONS.h in two routines)
3169      - enable easy to use "no forcing".
3170      - added exf I/O for atmospheric loading
3171      - added exf I/O for runoff data
3172      - transfered scaling between exf <-> MITgcm to exf namelist
3173    o Adding new verification experiment global_with_exf.
3174      This verification experiment is almost identical to the
3175      global_ocean.90x40x15 experiment, except that it uses
3176      the exf (and cal) package instead of the
3177      external_fields_load routine (cf README file).
3178    
3179    checkpoint46m_post
3180    o modified testscript to return -- when there are no lines of "%MON" output
3181    o added new flag "quasiHydrostatic" for QH mode
3182      and new routine quasihydrostaticterms()
3183    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3184      New routine: mom_u_coriolis_nh()
3185    o fixed sign of non-hydrostatic metric terms in u and v equations.
3186      Depend on correct sign of gravitySign.
3187    o added work.pc* to .cvsignore in aim directories using ifc
3188    o introduced flag for controllin non-hydrostatic metric terms
3189    o removed gravitySign from PARM04
3190    o switched to g77/ifc from pgf77 in aim experiments
3191    
3192    checkpoint46l_post
3193    o made convective adjustment work with pressure coordinates:
3194     - changed the direction of k-loop in convective_adjustment.F for the
3195       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3196     - adjusted the reference pressure k-index in convective_adjustment.F
3197     - adjusted the convection condition in convect.F (in analogy to
3198       calc_ivdc.F)
3199     - convective_adjustment no longer computes anything on the halos
3200     - removed the warnings about negative salinity from find_rho.F and
3201       find_alpha.F; instead the new routine look_for_neg_salinity, called
3202       at the beginning of find_rho, find_alpha, and find_beta, does a
3203       check of the entire slice, if CPP-option
3204       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3205    checkpoint46l_pre
3206    
3207    checkpoint46k_post
3208    o fixed the verification/global_ocean.90x40x15 experiment:
3209     - new bathymetry (the world according to A., JMC, and M.)
3210     - new initial fields and forcing fields (*.bin files)
3211     - new POLY3.COEFFS (for the next release one should switch to a full
3212       equation of state: JMD95P or MDJWF)
3213     - fixed several errors and redundancies in the data file
3214     - experiment uses looped cells
3215     - added matlab directory with diagnostic scripts for plotting of output
3216    
3217    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3218     - read AIM physics parameters from a file (data.aimphys)
3219     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3220    
3221    checkpoint46j_post
3222    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3223    o move wVel computation at the end of the time step, in S/R integr_continuity
3224    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3225    o update timeave pkg for wVel diagnostic.
3226    checkpoint46j_pre
3227    
3228    checkpoint46i_post
3229    o Clean up AIM package (and keep the results unchanged):
3230      include CPP_OPTION and use IMPLICT NONE in all routines ;
3231      declare all the variables _RL ; use _d 0 for all numerical constants.
3232      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3233    
3234    checkpoint46h_post
3235    o cleaned up the use of rhoNil and rhoConst.
3236      - rhoNil should only appear in the LINEAR equation of state, everywhere
3237        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3238        and the dynamical equations are all divided by rhoConst
3239    o introduced new parameter rhoConstFresh, a reference density of fresh
3240      water, to remove the fresh water flux's dependence on rhoNil. The default
3241      value is 999.8 kg/m^3
3242    o cleanup up external_forcing.F and external_forcing_surf.F
3243      - can now be used by both OCEANIC and OCEANICP
3244    checkpoint46h_pre
3245    
3246     Added code to convert surface volume flux (fresh water) into
3247     a mass flux when using P coordinates in the ocean (OCEANICP).
3248     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3249    
3250    checkpoint46g_post
3251    o Include a new diagnostic variable phiHydLow for the ocean model
3252      - in z-coordinates, it is the bottom pressure anomaly
3253      - in p-coordinates, it is the sea surface elevation
3254      - in both cases, these variable have global drift, reflecting the mass
3255        drift in z-coordinates and the volume drift in p-coordinates
3256      - included time averaging for phiHydLow, be aware of the drift!
3257    o depth-dependent computation of Bo_surf for pressure coordinates
3258      in the ocean (buoyancyRelation='OCEANICP')
3259      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3260        Theta, Salinity, and Pressure in the parameter list. This routine is
3261        presently contained in find_rho.F. This routine does not give the
3262        correct density for 'POLY3', which would be a z-dependent reference
3263        density.
3264    o cleaned up find_rho
3265      - removed obsolete 'eqn' from the parameter list.
3266    o added two new verification experiments: gop and goz
3267      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3268    checkpoint46g_pre
3269    
3270    checkpoint46f_post
3271    o Enable tangent linear (forward mode) gradient checks:
3272      - extended active file handling to g_... files
3273      - added TANGENT_SIMULATION to theSimulationMode
3274      - extended grdchk package accordingly
3275    o added tangent linear setup in verification/carbon/code_ftl
3276    o added adjoint setup in verification/front_relax/code_ad
3277    
3278    checkpoint46e_post
3279    o Added new equation of state -> MDJWF
3280      - EOS of McDougall et al., 2002, JAOT, submitted
3281      - caveat: the equation of state is only valid for a smaller (more
3282        realistic?) range of values than JMD95P/Z and UNESCO
3283      - added masks to the calculation of pressure in store_pressure
3284      - added more check values for density in check_eos (ini_eos.F), some of
3285        the old check values are out of the range of the MDJWF-eos, so don't
3286        expect perfect matches for those
3287    checkpoint46e_pre
3288    
3289    checkpoint46d_post
3290    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3291      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3292      case of pressure coordinates. eosType='JMD95Z' in
3293      combination with buoyancyRelation='OCEANICP' now causes an error.
3294    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3295      in find_alpha/beta.
3296    checkpoint46d_pre
3297    
3298    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3299      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3300    
3301    checkpoint46c_post
3302    o Changes necessary for ocean in p-coordinates
3303     -  Added new buoyancy relation = 'OCEANICP'
3304     -  Added new parameters = gravitySign (this used to be contained inside
3305        the factor dRdZ which I added when we first switched to R coordinates).
3306     X GM/Redi is not compatible (yet)
3307     X bottom drag and no-slip need to be debugged.
3308    checkpoint46c_pre
3309    
3310    checkpoint46b_post
3311    o Added new equation of state -> JMD95Z and JMD95P
3312      - EOS of Jackett and McDougall, 1995, JAOT
3313      - moved all EOS parameters into EOS.h
3314      - new routines ini_eos.F, store_pressure.F
3315    o Added UNESCO EOS, but not recommended because it requires
3316      in-situ temperature (see JMD95)
3317    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3318      unesco.f to be used with POLY3
3319    checkpoint46b_pre
3320    
3321    checkpoint46a_post
3322    o Added (atmospheric) pressure loading
3323      - new field in FFIELDS.h, etc...
3324      - new cpp flag ATMOSPHERIC_LOADING
3325    o Changed hFacC to _hFacC in calc_phi_hyd.F
3326    o Added SHORTWAVE_HEATING to some files for consistency
3327    checkpoint46a_pre
3328    
3329    checkpoint46
3330    further merges from release1_p5
3331    o new ctrl package
3332      - adopted from ECCO environment to enable optimization
3333      - added Eliassen Palm fluxes to controls
3334    o added Eliassen Palm flux controls to gradient check package
3335    o cost package
3336      - Compatible with new ctrl package
3337      - added Eliassen Palm cost hooks
3338      - modif's of existing cost functions
3339    o Adjoint-related bug fixes in kpp:
3340      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3341      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3342    o autodiff package
3343      - flow directives:
3344        + new for S/R do_the_model_io
3345        + enhanced for S/R checkpoint
3346        + new gmredi.flow
3347      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3348        disable adcommon.h/g_common.h by default.
3349      - fixed problem for adjoint of global_max
3350    o modified verification/carbon/
3351    o New setup for adjoint of global_ocean
3352    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3353    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3354    o incorporated hooks for sponge layer code (external_forcing.F)
3355    
3356    checkpoint45d_post
3357    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3358  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3359    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3360    o add new parameter deltaTfreesurf for free-surface time stepping
3361    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3362  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3363  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3364  o add new flags:  o add new flags:

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