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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.958 by jmc, Thu Feb 14 15:51:30 2008 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/diagnostics (stats-diags):
8      - fix global Min/Max in case 1 processor get only empty tiles
9    o genmake2: replace (4 times)
10         make genmake_tc_1.o >> genmake_warnings 2>&1
11      with
12         COMM="$CC $CFLAGS -c genmake_tc_1.c"
13         echo $COMM >> genmake_warnings
14         $COMM >> genmake_warnings 2>&1
15      to make genmake2 always see the value of CC as specified in the optfile.
16    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
17      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
18      - modify verification advect_cs test to test SOM-advection on CS-grid.
19    o pkg/ctrl:
20      - Rewrite of ctrl_map_ini_ecco.F,
21        introducing a generic routine (ctrl_map_ini_gen.F).
22      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
23    
24    checkpoint59n
25    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
26      number in dedicate array "hdiag":
27      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
28        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
29      - many small changes (integer format) for large number of diagnostics
30      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
31        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
32    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
33      usingSphericalGrid, this allows to define the rotated grid coordinates
34      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
35      geographical coordinates according to the inverse of the rotation defined
36      by the Euler angles, so that Coriolis parameter and online-interpolation by
37      exf works with the geographical coordinates on XC/YC/XG/YG.
38      Naturally, this feature does not work with all packages, so some
39      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
40      profiles), because there the coordinates are assumed to be regular
41      spherical grid coordinates.
42    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
43      - introduce isopycnal diffusion coefficient control.
44    o tools/adjoint_options:
45      - additional control vector components.
46    o pkg/mnc: have mnc create marginally meaning full coordinate variables
47      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
48    o pkg/mypackage:
49      - add example of read/write pickup for state-var ;
50      - add entry points to the main code for state-vars diags & write-pickup.
51    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
52      transitions for useExfYearlyFields
53      - add new subroutine that determines the file to read from for
54        use*YearlyFields = .TRUE. and .FALSE.
55      - add a verification experiment to global_with_exf that tests
56        useExfYearlyFields with USE_EXF_INTERPOLATION defined
57    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
58      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
59      subroutines (which could be generated from a template, because they are
60      almost identical), for now they are included in obcs_prescribe_read.F for
61      simplicity
62    o pkg/exf:
63      - add a little more diagnostic to exf_interp_read (in analogy to
64        mds_read_field, can be turned off with debugLevel < debugLevA=1)
65      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
66        ugly but fast by unrolling short inner loops, inserting a unroll=8
67        directive in routine lagran, and splitting a loop and making do while the
68        outermost loop (the latter requires the intoduction of index arrays)
69    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
70    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
71      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
72    o verification/seaice_obcs: updated for restart test and latest options
73    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
74      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
75      for now this is only available for the C-grid code and also within
76      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
77    
78    checkpoint59m
79    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
80      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
81    o gad_som : fix flux output (& diagnostics) to have same units as other  
82      advection scheme fluxes (was previously multiplied by deltaT).  
83    o added verification/seaice_obcs both to test seaice open boundaries
84      and to provide an example matlab scrpt for generating them
85    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
86    o pkg/salt_plume: clean up salt_plume_frac.F to
87      remove redundancy in PlumeMethod 1 and 4
88    o pkg/kpp: added saltplume diagnostics
89    o pkg/obcs and pkg/seaice:
90      - do not set uice and vice to zero when OB*icefile are unspecified
91      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
92      - moved seaice tracer obcs after call to seaice_growth
93    o pkg/salt_plume: added various options for salt plume depth
94      criterion and for vertical distribution of the salt
95    
96    checkpoint59l
97    o pkg/ptracers: new version of ptracers pickup:
98      read meta file and write only fields which are needed to restart.
99      ( same logic as main pickup file ; also using pickupStrictlyMatch )
100    o pkg/seaice:
101      - add timescale for melting due to warm mixed layer as a means of
102        setting SEAICE_availHeatFrac more conveniently
103      - add a CPP-flag/runtime parameter check for flooding algorithm
104      - reformulated availHeat in seaice_growth.F to be independent of AREA
105    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
106      unit changes
107    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
108    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
109      SX vector computer.
110    o pkg/seaice:
111      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
112        seaice forcing fields can now be read only through pkg/exf
113      - removed some unused halos
114    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
115    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
116      or U/VICE from U/VWIND before computing U/VSTRESS
117    
118    checkpoint59k
119    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
120      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
121    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
122      all experiments pass when compile with un-initialised var. checking option.
123    o added pkg/salt_plume
124    o script to test restart (for now, in MITgcm_contrib/jmc_script)
125    o pkg/seaice: new read/write pickup version.
126      read meta file and write only fields which are needed to restart.
127      ( same logic as main pickup file ; also using pickupStrictlyMatch )
128    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
129    o lab_sea.hb87: modify the domain & update output.hb87.txt :
130      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
131      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
132      process. Fixed here by closing the domain at the Northern boundary.
133    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
134    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
135      a set of consecutive levels in/from a 3-D array.
136    o pkg/ptracers:
137      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
138      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
139    
140    checkpoint59j
141    o in pkgs: dic, obcs, offline, rbcs:
142      standard way to compute coeff. for time interpolation between 2 time reccords
143      which retains full precision (& make results less dependent on compiler).
144      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
145    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
146      packages instead of reading ice cover and wind speed separately
147    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
148     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
149      to allow to compile customized code before the update)
150    o cleaning-up:
151      - fix CPP instruction syntax in pkg/obcs
152      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
153        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
154      - fix some threads issue in IO parts.
155    o pkg/dic:
156      - add tons of "_d 0" (--> much better testreports !)
157       and then update outputs of tutorial_global_oce_biogeo
158    o pkg/mom_fluxform:
159      add a special version of momentum advection intended to conserve momentum
160      next to a bathymetry step or a coastline edge. (default = off = #undef)
161    o new read/write pickup version:
162      - for now, only implemented for main (mdsio) pickup file.
163      - write out only what is needed to restart; merge pickup_nh , pickup_ph
164        and main pickup together.
165      - read meta file; read only what is needed to restart; stop if a field
166        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
167        if it make sense (even if the restart is not perfect).
168      - if no meta file, assume that pickup to read corresponds exactly to
169        a pickup that would currently be written.
170      - read pickup written in the old format (until checkpoint59i) if it
171        recognizes an old meta file (no field-list).
172      - add a meta file in exp. which starts from a pickup: 2 cases:
173        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
174         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
175        b) a meta file describing the content of the associated pickup file
176         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
177    o pkg/mdsio & pkg/rw:
178      - new routine to read a meta file ; new set of routine to read
179        Multiple-fields file (with meta file).
180    o added open boundary conditions capability for seaice
181        HSNOW, HSALT, UICE, and VICE
182    
183    checkpoint59i
184    o adjoint:
185      * fix multiDimAdvection adjoint
186        (partial recomputation problem by TAF for fVerT(:,:,kDown)
187        and comlev1 size definition (maxpass vs. max. number of tracers)
188      * verification/global_ocean.90x45x15 adjoint now tests
189        NLFS and multiDimAdvection using DST3 (=30)
190      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
191    o pkg/kpp: add "_d 0" to real constant (if missing);
192      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
193      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
194    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
195      for internal parameters related to restart process (formerly from PARAMS.h)
196      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
197    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
198      as argument. (only atm2d & obcs write_pickup have not yet been updated)
199    o pkg/monitor:
200      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
201      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
202      - account for deep Atmosphere factor and density factor (anelastic)
203    o added open boundary conditions capability for seaice HEFF and AREA
204    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
205      thermodynamics
206      - requires a little reorganization, which affects the testreport results
207        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
208        so that now the conservative form is tested
209      - add a few comments
210    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
211    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
212    o add new diagnostics to seaice: advective, diffusive fluxes (only for
213      multidim-advection, for scheme 2 they are not filled) and transports,
214      thermodynamic growth rates
215    o change units of EmPmR (inside the code, + within coupling interface)
216      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
217      Affects results @ truncation level (cg2d match) and update output of
218       experiments: lab_sea(6), global_ocean.90x40x15(10),
219      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
220      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
221      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
222      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
223    
224    checkpoint59h
225    o pkg/exf:
226      - improve vectorization by moving if-statement out of loops in
227        exf_mapfields, exf_radiation
228      - exf_bulkformulae.F: introduce 2D fields and vectorize code
229    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
230    o testreport:
231      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
232        monitor & update offline_exf_seaice exp. output.
233      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
234    o pkg/seaice:
235      - bug fix in the evp solver: boundary conditions were affected be
236        masking of zMax/zMin (changes results)
237      - minor bug fix in boundary conditions in seaice_calc_strainrates
238        (changes results for no_slip)
239      - seaice_lsr.F: make interpolation of eta dependent on boundaries
240      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
241      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
242        stress formulation and no-slip boundary conditions
243    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
244      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
245    o pkg/seaice: a first HSALT time stepping equation has been checked in
246    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
247      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
248      without requiring DO-IF statements
249    o pkg/thsice:
250      use continuous power-law function for partition of energy between lateral
251      melting/freezing and thinning/thickening ; old code using step function
252      still available with #undef THSICE_FRACEN_POWERLAW
253      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
254    o testreport: change AD testing : check against results/output_adm.txt
255      using same scripts as for forward test.
256    
257    checkpoint59g
258    o adjoint testing: in preparation for changing testreport:
259      - output format: cost and grad written on separated lines
260      - ad output results in directory "results" (instead of "results_ad")
261    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
262    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
263    o pkg/ecco: allow user defined cost function contributions
264    o testreport:
265      Allow to choose (per experiment) the list of tested output variables
266       and the main variable (used to issue a pass/FAIL ) ;
267      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
268      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
269      Also modify printing of summary:
270       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
271       b) echo the list of tested variables in the individual summary.txt of
272          each experiment.
273    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
274      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
275      (but still depend on the tile decompostion of the domain).
276    o pkg/seaice: change a discretization detail to make the B-grid code
277      "more symmetric". This change is likely to remove all "ridges/leads" that
278      where quasi-aligned with the grid in B-grid solutions. It may also be
279      the solution to the stress coupling issues with the B-grid.
280    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
281      remove .cvsignore from input dir. (since testreport no longer run here).
282    o pkg/thsice:
283     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
284     - fix reshaping of sea-ice just after advection:
285       melt all the ice only if ice-volume is too small.
286     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
287       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
288     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
289    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
290      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
291    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
292      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
293      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
294      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
295      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
296      -> update output.txt
297    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
298     this affects truncation error: -> update output.txt of exp:
299      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
300      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
301    
302    checkpoint59f
303    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
304    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
305      a bounded range (in forward mode)
306    o pkg/ecco, ctrl, autodiff and mom_common:
307     internal parameter controls, completements of implementations
308    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
309    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
310      (not seem any difference in testing results).
311    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
312       at face corners.
313    o pkg/generic_advdiff:
314     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
315      loop range indices for computing vertical advection tendency
316      and do the calculation in the interior only (no overlap) ;
317      for now, only implemented for SOM advection (to save CPU time).
318     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
319    o exch2 adjoint
320      First set of changes:
321      - add exch2 hand-written adjoint templates
322      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
323        This will require cleanup in pkg/autodiff/*.F
324        (changed routines currently kept separate in verif. code/)
325      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
326        that used to hide exch2 or cubed-sphere specific code
327        (commented via 'cph-exch2')
328    o pkg/seaice
329      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
330    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
331       output of global_ocean.cs32x15.thsice .
332    
333    checkpoint59e
334    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
335      for B-grid vector (not yet tested) and C-grid vector (<- only used
336      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
337    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
338      (#ifdef ALLOW_SALT_PLUME)
339    o gather_2d/scatter_2d: removed halo regions
340    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
341      scheme and the corresponding test case (under front_relax dir). For now,
342      only available with Skew-flux form and not yet tested in realistic set-up.
343      adjoint: store directives updated, but gradient checks deteriorated,
344      so maybe GM/Redi adjoint is now broken.
345    o seaice adjoint
346      * add AREA, HEFF, HSNOW as control variable
347        (should not change lab_sea results)
348      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
349    o pkg/seaice:
350      * added computation of saltFlux in seaice_growth;
351        For time being, sea ice salinity is assumed constant
352        contribution of snow flooding to freshening of sea ice is neglected.
353        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
354        defaults to 0.0 in order to maintain backward compatibility.
355        Typical values for SEAICE_salinity are 4 to 10 g/kg.
356      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
357      * added SEAICE_availHeatFrac, which specifies fraction of surface level
358        heat content used to melt or grow ice
359      * commented out cap of HICE: it helps keep ice thinner
360      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
361      * applied OBCS T/S mask to HEFFM sea ice mask
362    
363    checkpoint59d
364    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
365     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
366     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
367    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
368     and change default value of parameter "GM_Small_Number";
369     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
370       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
371       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
372    o pkg/ecco: cost function when applying pkg/smooth to controls
373    o pkg/ctrl: add forcingPrecond run time parameter
374    o pkg/seaice:
375     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
376     - fix bug in metric terms of u-equation in LSR solver (implicit part),
377       changes verification/lab_sea
378     - rearrange implicit part of u-equation in LSR solver to make it easier to
379       read, understand, and debug. This causes changes at the truncation level.
380     - fix (serious) bug in the boundary conditions (sign error in the implicit
381       part) of the LSR solver. Changes all LSR results.
382     - fixed problem with HSNOW initialization to avoid thick snow when AREA
383       is initilized with small values - does not change lab_sea results.
384     - added HsnowFile initialization capability
385    o pkg/smooth: addition to model/src and pkg/ctrl so allow
386     initialization of pkg/smooth and application to control vector
387    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
388    o dependencies: pkg/profiles requires pkg/cal
389    o pkg/profiles:
390     - added option ALLOW_PROFILES_GENERICGRID
391         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
392         that interpolation information (grid points and coefficients) is provided
393         within the netcdf input files.
394         -> sample matlab scripts can be found in MITgcm_contrib/gael
395         that allow you to prepare netcdf input files.
396     - also modified: cleaner include statements, cleaner error print statements,
397       cleaner stops when error, and more tests of the netcdf input files consistency.
398    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
399    o pkg/seaice:
400     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
401       requires a new routine: seaice_diagnostics_fill.F
402     - make sure that seaice does not move if not forced (pressure replacement
403       method, Hibler and Ip, 1995), changes results
404     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
405     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
406       It is turned off by default (=-1.), because it changes the results.
407     - make it possible to read AREA from a file, too.
408    
409    checkpoint59c
410    o add S/R and diagnostics for oceanic mixed-layer depth
411    o move GMRedi call after all vertical mixing schemes (including KPP)
412    o pkg/thsice:
413     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
414      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
415    o pkg/obcs:
416     - bug fix for balance code
417    o pkg/seaice:
418      - allow values of SEAICE_elasticParm > 1
419      - add new parameter SEAICE_evpTauRelax as an alternative
420        to SEAICE_elasticParm
421      - make lsr boundary conditions free slip (by default), changes result
422      - add code for no slip boundary conditions for lsr
423      - set minimum of zeta to zero (and not 4e8) (changes results)
424      - add a cap on AREA after advecting AREA if seaice_growth is not called
425    o change calculation of Visbeck K:
426      - no longer depend on tapering scheme; instead, compute slope (limited
427        by GM_maxSlope). this is equivalent to what was comuted before with
428        clipping or linear tappering.
429      - fix vertical averaging (wrong by 1/2 level)
430      - leave the old version (but will not be maintained) within
431        #ifdef OLD_VISBECK_CALC / #endif
432      - update output of exp. ideal_2D_oce
433    o change error catch in calc_r_star to improve vectorization
434    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
435      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
436    o adjoint:
437      Re-organized adjoint checkpointing according to Matt Mazloff
438      (but with modifs/completions/cleanups)
439      Storing is now bundled into large arrays to optimized I/O
440      (and second step in cleanup of the_main_loop)
441    
442    checkpoint59b
443    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
444      - export/import (between ocean & coupler) fields needed for ocean DIC.
445    o pkg/seaice:
446      - get rid of three more exchanges seaice_calc_viscosities (required
447        different loop boundaries in seaice_lsr and seaice_ocean_stress)
448      - bug fix in seaice_ocean_stress (update of lab_sea required)
449      - reduce loop boundaries to necessary minimum also in seaice_evp
450      - go back to the old way of computing deltaC/Z as the adjoint likes that
451        better
452    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
453      passive tracer to an Age Tracer) + update output.txt
454    o pkg/exf:
455      - implement A-grid / C-grid selection for wind-stress input files.
456      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
457      for now, in exf_bulk_largeyeager04.F only :
458      - change implementation for case where windspeed + 2. components wind-stress
459        are read-in. AND use rhoConstFresh to convert evap.
460    o pkg/seaice:
461      - use correct EXCH_UV for wind-forcing (on A-grid).
462      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
463        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
464    o pkg/exf:
465      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
466      EXF_INTERPOLATION:
467      - merge global_with_exf/code version of exf_interp_read.F
468        to the main code ;
469      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
470        reading the file ; Important: This options needs to be defined to recover
471        previous code.
472        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
473      - no longer loose real*8 precision along the way when using exf_iprec=64.
474    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
475      - change discretisation of evp-solver in order to avoid another exchange
476        (changes lab_sea) and clean up a little
477      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
478        help the adjoint (this also changes the results slightly)
479      - add a few "_d 0" where they had been missing in seaice_evp.F
480      - cleaning up: remove unused seaice_calc_rhs.F
481    o pkg/exf: some cleaning-up:
482      - change various "constants" into runtime parameters
483      - cleaned-up Large&Yeager04 routine which should eventually
484        replace exf_bulkformulae.F (changed names of S/R and CPP)
485        and merged various ALLOW_ATM_WIND options
486     only used with thsice pkg (in thsice_get_exf.F):
487      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
488        which are used when useStabilityFct_overIce=TRUE (= the default)
489      - change default values of ice & snow emissivity and scale downward LW
490        by ice & snow emissivity.
491    o pkg/thsice:
492     fix few little problems, in thsice_calc_thickn.F:
493      - growth vertically (and not laterally) if iceFrac == iceMaskMax
494      - melt only laterally if hIce < hThinIce (as the comments say)
495      and in thsice_extend.F:
496      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
497      - start to form ice as soon as the minimum ice-volume is reachable.
498     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
499      and cpl_aim+ocn
500    o pkg/kpp
501     - move computation of surface related input fields to KPP into a new
502       subroutine kpp_forcing_surf.F
503     - remove wrong (within bi,bj loops) EXCH calls.
504     - little cleaning (add argument myThid in last position, cvs header ...)
505     - for now, fix conservation problem by exchanging KPPviscAz (may not
506       be the best fix)
507    o pkg/seaice
508     - check for inconsistent evp parameter/cpp-flag combination
509     - remove leftover errIO flat for obsolete name list error handling
510    o OpenAD
511     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
512    
513    checkpoint59a
514    o pkg/seaice: some parameter clarifications and a little bit of clean up
515    o pkg/thsice: rename run-time parameters:
516       himin       -> hIceMin
517       himin0      -> hThinIce
518       hihig       -> hThickIce
519       i0          -> i0swFrac
520       transCoef   -> bMeltCoef
521       frac_energy -> fracMelting
522      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
523       with default values (for now) that do not change the results.
524      remove old version of thsice vars advection in pkg/seaice.
525    o in FFIELDS.h:
526      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
527      - make pLoad & sIceLoad always available (but still only used if
528         ATMOSPHERIC_LOADING is #define).
529    o pkg/kpp: replaced _KPP_RL with _RL
530    o bug fixes for vertical diffusivity computations when both KPP and
531        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
532        are no longer updating the vertical diffusivity array
533        (passed as argument) but are (re-) setting those arrays.
534    o pkg/seaice: fix bug in evp solver, while doing that
535      - change (improve?) discretization of stress computations for both
536        cgrid-lsr and evp solver
537      - add a new routine to compute strain rates
538      - the above changes lab_sea results
539      - add no slip conditions for evp solver (off by default), lsr-version
540        may follow
541      - fix exchange for shear at Z-points (does not change lab_sea)
542      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
543        (to force the user to pick a time step since there is not "safe" way
544        of choosing it)
545      - add principal stress diagnostics
546      - rearrange fields for evp a little to avoid having to call a: too many
547        exchanges and b: exchanges for stress trensor components which we do
548        not have.
549      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
550        of evp, complete rewrite for lsr case (latter is does not yet work
551        in all cases)
552    o pkg/kpp: add code to have mixing in shelf ice caverns
553      - add myThid to all kpp routines (long overdue)
554    
555    checkpoint59
556    o pkg/exf:
557      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
558        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
559      - move exf header files from lower_case.h to UPPER_CASE.h ;
560        add missing cvs Header & Name
561      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
562      - add namelist param. selectStressGridPosition, exf_monFreq
563      - retire many _CLIM routines, and remove data.exf_clim
564        + params moved to data.exf
565        + climsst, climsss now handled by exf_set_gen, i.e.
566          climss?period=0 refers to constant field,
567          climss?period=-12 to monthly forcing
568      - split up namelists in data.exf
569    o pkg/seaice:
570      - remove seaice_exch and seaice_exch_uv
571      - remove superfluous exchange of theta
572      - add myThid to seaice_budget_ocean/ice
573      - add new interface for atmospheric wind forcing (C-grid only)
574        + new routine
575        + two new field (taux, tauy for stress over ice)
576        + removed one global field (DAIRN) for C-grid case only
577    o pkg/thsise
578      - 2nd set of modifs for thsice adjoint in conjunction with exf
579    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
580    
581    checkpoint58y_post
582    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
583      vertical diffusivity, similar to that in MOM4; turned on using
584      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
585      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
586    o Added capability for 3D specification of background vertical diffusion
587      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
588      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
589      "data" file that contains the 3D vertical diffusivity coefficients.
590    o ice dynamics (pkg/seaice) with thsice thermodynamics:
591      - add code within pkg thsice to advect & diffuse sea-ice fields
592      similar to (and will replace) what has been added in  seaice_advdiff.F,
593      but: - conserving Mass, Heat & Salt.
594           - better when using non-linear advection scheme (not yet fully tested)
595           - can also be used in atmospheric set-up (for now, only the diffusion).
596    
597    checkpoint58x_post
598    o IO option for global-file compact format:
599      - add options when generating topology (utils/exch2/matlab-topology-generator)
600      - add I/O capability (pkg/mdsio).
601      - adapt utils/matlab/rdmds.m to read this format.
602      for now long-line format not yet supported by pkg/mdsio (& exch2).
603    o shelfice: add a few diagnostics
604    
605    checkpoint58w_post
606    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
607      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
608      (and replace horiVertRatio in NH code).
609      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
610                         and tutorial_plume_on_slope (sensitive to truncation)
611    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
612      directly to drive seaice model (C-grid only)
613    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
614     - reintroduce computation of wind from stress,
615     - compute tau (in exf_bulkformulae.F) from windstress averaged to
616       mass points to avoid tau = 0
617     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
618    o rdmnc.m: make it work with "global" files created with gluemnc
619    o rdmnc.m : some improvements in dealing with singleton dimension
620      (tested on all testreport mnc output files).
621    o genmake2: disable pkg/profiles if netcdf test fails.
622    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
623    o move call to cal_readparms up to make calendar parameters/variable available
624      to all packages
625    
626    checkpoint58v_post
627    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
628      useDynP_inEos_Zc tested.
629    o pkg/exf: changes to properly interpolate/mask/scale initial fields
630    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
631      and portions thereof.  See read_cs.txt for description and examples.
632    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
633      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
634      following the great-circle arc between those 2 points.
635    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
636      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
637    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
638     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
639     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
640     - still needs work (not working with some options ; efficiency to improve)
641       and serious testing.
642     - use this scheme for temperature & salinity in 2 advection test exp.:
643       advect_xy & advect_xz, respectively.
644    
645    checkpoint58u_post
646    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
647    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
648    o testreport: add option "-skipdir" to skip some test.
649    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
650      momentum calculation.
651    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
652    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
653      remove checkpoint.F and the_correction_step.F (no longer used);
654      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
655    o add option (linFSConserveTr) to correct for tracer source/sink due to
656      Linear Free surface
657    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
658    o pkg/thsice: fix reading mnc-pickups
659    
660    checkpoint58t_post
661    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
662    o pkg/mdsio:
663     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
664       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
665       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
666     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
667     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
668       either MDS_READ_FIELD or MDS_WRITE_FIELD )
669     - new S/R (to replace MDSWRITEMETA), which allows to write more
670       informations (variable names, time ...) to meta files.
671     - modify rdmds.m to give back the meta file content.
672    o pkg/diagnostics: change vertical interpolation to be safer, and more
673       flexible (define p-levels to interpolate to in data.diagnostics);
674      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
675       diagnostic pointer.
676    o pkg/seaice: more cleaning up of seaice_growth, added many comments
677    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
678    o fix multi-category seaice:
679     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
680       SEAICE_MULTICATEGORY
681     - fix short wave heat flux
682    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
683       and allow to use EVP solver. Change forward lab_sea: test both EVP
684       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
685    o Initial check-in of lab_sea adjoint
686      (very similar to natl_box_adjoint/code_seaice)
687      * used C-grid and EVP solver
688      * used KPP, GM/Redi
689      * uses inAdExact=.TRUE.
690      * gradient checks fail for both ADM and TLM
691        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
692        f.d. gradients actually seem more problematic than ADM, TLM gradients;
693        issue is related to forward mismatch between g77 an ifort
694    o pkg/seaice: overhaul of thermodynamics
695     - growth.F and groatb.F are replaced by new routine seaice_growth.F
696     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
697     - move a few global fields out of SEAICE.h into seaice_growth.F and
698       make them 2D (FICE/QNETO/ ...)
699     - remove FO (it is the same as QNETO)
700     - introduce a few local fields to avoid modifying external fields such
701       as atemp, etc.
702    
703    checkpoint58s_post
704    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
705      changed exf_set_gen.F so that
706        genperiod=0 means input file is one time-constant field and
707        genperiod=-12 means input file contains 12 monthly means
708    o CG2D: use pre-computed solver main-diagonal (stored in common block);
709      this affects truncation error ; generate new output file for exp. which
710      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
711        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
712        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
713        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
714        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
715        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
716    o start implementation of deep-atmosphere and anelastic formulation
717    o verification: remove 2nd copy of input files and use script "prepare_run"
718      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
719    o mom_common/vecinv/fluxform: fix a few initialisation isssues
720    o profiles: fix for multithreaded case
721    
722    o diagnostics: rename few diags:
723      s/'PRESSURE'/'RCENTER '/g
724      s/'TICE    '/'oceFreez'/g
725      s/'TAUX    '/'oceTAUX '/g
726      s/'TAUY    '/'oceTAUY '/g
727      s/'SWFLUX  '/'oceQsw  '/g
728      s/DIFx/DFxE/g
729      s/DIFy/DFyE/g
730      and add few ocean-forcing diagnostics:
731      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
732    o modifications to pkg/seaice/growth.F and budget.F, which change results of
733      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
734      as actual snow thickness.  It now refers everywhere to effective snow
735      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
736    
737    checkpoint58r_post
738    o modifications to pkg/seaice/growth.F, which change results of
739      lab_sea experiment: fixes pertain to melting snow over open water, to
740      masking EVAP under sea ice, and to using the correct AREA variable for
741      computations of EVAP, PRECIP, HSNOW, and GHEFF
742    o add ability to read bathy, salt, and theta using MNC (off by def)
743    o add flooding algorithm and advection of HSNOW for pkg/seaice;
744      both are turned off by default and do no change any results
745    o seaice advection with pkg/thsice: a step toward the use of non-linear
746      advection scheme, but #ifdef or commented out for now (requires more EXCH).
747    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
748      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
749      in natl_box (affects results @ truncation level: update output.txt)
750    o multi-threading and IO:
751      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
752      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
753        (needed to work with SingleCpuIO): tested in all verif. exp.
754    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
755      affects the results (but none of the verification test uses this scheme).
756    o Adding some pkg/diagnostics capability to pkg/seaice
757      (will certainly be subject to changes)
758    o ctrl: adding new control variables:
759      lwflux, lwdown, evap, snowprecip, apressure, runoff
760    
761    checkpoint58q_post
762    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
763      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
764      high_res_cube configuration by 4% on Columbia.
765    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
766      add (in global_with_exf/code) a version of EXF_INTERP_READ without
767      dynamical allocation (seems to work in multi-threaded).
768    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
769      single CPU io) so that TAF does not have to see EESUPPORT.h
770    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
771    
772    checkpoint58p_post
773    o obcs: stop if obcs is used with useCDscheme = .true.
774    o shelfice:
775     - fix a sign error so that no slip at shelfice interface works
776     - remove stop for combination non-hydrostatic code and shelfice. That does
777       not mean, that the results are correct, but at least they are numerically
778       stable
779    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
780    o added adjoint exch routined for all exch*3d* routines
781      and updated flow directives
782    
783    checkpoint58o_post
784    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
785      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
786    o change controling S/R for writing pickup file (new S/R do_write_pickup)
787      and clean-up reading/writing of pickup files.
788    o fix local version of read/write pickup (NH part) in rotating_tank/code
789    o simplify EXCH interface:
790     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
791     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
792    o added the regrid package
793    o shelfice:
794     - add a simple boundary layer scheme to reduce noise
795     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
796    
797    checkpoint58n_post
798    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
799       local variable (not in common block).
800    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
801      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
802      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
803        to work with SingleCpuIO.
804    o add "_d 0" to real constant of pkg/cfc subroutines ;
805       update exp. cfc_exemple & tutorial_cfc_offline output files.
806    o multi-threading and IO:
807      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
808        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
809      - barrier before and after reading.
810      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
811      - avoid using MDS_WRITELOCAL for LAND pkg output.
812      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
813        common-block variables ; Allows multi-threading with master-thread IO.
814    o change default MAX_NO_THREADS from 32 to 4 ;
815      and stop cleanly when MAX_NO_THREADS is too small.
816    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
817    
818    checkpoint58m_post
819    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
820       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
821    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
822       keep global_ocean.90x40x15 (for AD testing) with former secondary test
823       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
824    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
825        add MITgcm_tutorials (= code + all the tutorials)
826    o ecco, option to compute cost for total ssh (mean+anom)
827    o consistent with addition of ptracer and ssh in pkg/profiles
828    o profiles: adding ptracer and ssh
829    o testreport: change multi-test output-file name
830      (from output.txt.{name} to output.{name}.txt)
831    o profiles: now ok for mutli-tiles case
832    o seaice: add 4 parameters for different advection schemes for area,
833      (effective) seaice thickness, enthalphy, and snow height. Their default
834      is the standard parameter SEAICEadvScheme
835    o calc_gw:
836     - add cosFacU in zonal viscous flux (harmonic.visc.).
837     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
838       of tutorial_plume_on_slope.
839    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
840    o calc_gw: true flux-form, account for horizontal grid spacing.
841      update rotating_tank results, but not plume_on_slope (affected at
842      truncation level, 11 digits).
843    
844    checkpoint58l_post
845    o calc_gw:
846     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
847     - remove side-drag for now (need to fix it); update plume_on_slope results.
848     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
849    o commit code to make SST/SSS weights spatially variable
850      (based on either variable in-situ or variable initial T/S weights)
851    o pkg/ecco:
852      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
853        now based on horizontally varying weights wthetaLev, wsaltLev
854      * cost_averagesflags now returns year indices in addition to day, month
855      * sflux balance is performed on annual basis
856        (sflxumm, sfluxmm2, bal_sfluxmm)
857      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
858        including separate counting and multipliers
859    o pkg/rbcs
860      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
861    
862    checkpoint58k_post
863    o testreport:
864     - always build in dir. "build" (if not there, mkdir build instead of building
865       & running in input)
866     - run in dir run (if it exists), in build otherwise.
867     - call prepare_run (if input/prepare_run exists)
868     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
869    o pkg/exf modifications to interpolation and rotation routines for more
870       reasonable treatment of North Pole singularity: for tracers North Pole
871       value is set to northernmost zonal-mean value, for zonal velocity it is
872       set to zero, and for meridional velocity it is set to northernmost value.
873    o pkg/exf/exf_check_range.F
874     - add tile index to diagnostics and move stop statement to the very
875       end of the routine.
876    o pkg/diagnostics: (diagnostics_main_init.F)
877      define title of isomorphic variables according to the current config.
878    o pkg/thsice with pkg/seaice dynamics:
879    - fix domain of computation (interior only, required for exf) and do exchanges
880    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
881    o towards a standard way of dealing with multi-threading in MONITOR
882      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
883    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
884       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
885    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
886    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
887    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
888       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
889    o tracer advection:
890     - clean-up and simplify calc_common_factors.F
891     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
892       advection subroutine (but still not used within DST advection S/R)
893    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
894    
895    checkpoint58j_post
896    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
897      from file (collects calls previously in FORWARD_STEP)
898    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
899    o adjoint store dir. adjusted accordingly
900    o genmake2
901      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
902    
903    checkpoint58i_post
904    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
905      on wind stress (SEAICEstressFactor defaults to 1.)
906    o Total number of Timers is finite (<=40): comment out 2 non-essential one
907      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
908    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
909      on CS-grid: no longer loosing mass.
910    o exf & curvilinear-grid: no longer modify longitude xC & xG.
911    o pkg/ggl90: fix sloppy output and fix a bug
912    o pkg/seaice: added SEAICEuseEVPpickup parameter
913      - Set to false in order to start EVP solver with
914        non-EVP pickup files when using SEAICEuseEVP
915      - fix sign error in diffusion in seaice_calc_rhs
916    
917    checkpoint58h_post
918    * Modifications for bottom topography control
919      o replace hFacC by _hFacC at various places
920      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
921      o add non-self-adjoint cg2d_nsa
922      o update autodiff support routines
923      o re-initialise hfac after ctrl_depth_ini
924      o works for 5x5 box, doesnt work for global_ocean.90x40x15
925    * Adding verification for 5x5 box (4-layer) bottom topography control
926    
927    checkpoint58g_post
928    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
929       used for mean seasonal cycle, mean diurnal cycle); add an example
930       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
931    o pkg/ggl90:
932      - add parameter (minimum surface kinetic energy)
933      - fix bug (avoiding division by zero)
934    o couple pkg/thsice to pkg/seaice:
935      - modify advection in seaice to accomodate new scalar fields to be advected
936      - only muliDimAdection scheme work with seaice/thsice
937      - mapping of thsice-variables to seaice-variables, back and forth
938      - does not break the verification experiments, but does not give the
939        desired results either
940    o pkg/seaice
941      - make (default) second order advection a bit less confusing?
942    
943    checkpoint58f_post
944    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
945      to pkg/seaice):
946      - new routines thsice_map_exf and thsice_get_exf provide the interface
947      - add an additional formal parameter to thsice_solve4temp
948    o pkg/exf:
949      - add new fields wspeed, snowprecip (to be able to couple to thsice)
950      - correct Stefan-Boltzmann constant
951      - new parameter for longwave surface emittance
952      - separate some stuff from exf_bulkformulae into new routines  
953        exf_radiation, exf_wind
954      - add new parameters and constants: longwave emissivity for ocean, ice
955        and snow, evaporation parameters over ice
956      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
957        either wind from stress or stress from wind
958    o pkg/thSIce:
959    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
960    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
961       and THSICE_CALC_THICKN
962    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
963    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
964      to make debugging easier.
965    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
966    o pkg/bulk_force:
967      - clean-up comments and parameters ;
968      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
969    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
970      generate new output for test-experiment: aim.5l_cs.thSI
971    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
972      testreport accordingly
973    
974    checkpoint58e_post
975    o SEAICE_CGRID adjoint done
976    o R_STAR adjoint implemented.
977      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
978      * need to sort out init. of h0facc, etc.
979    o Make pkg/profile fully independent of ecco,cost, etc. stuff
980      to be able to use it in pure forward.
981    
982    checkpoint58d_post
983    o upgrade simple test-experiment to tutorial example:
984     step.1: duplicate the experiment and (step.2) will remove the old copy.
985      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
986      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
987      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
988      tutorial_global_oce_biogeo    <- copy of dic_example
989      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
990      tutorial_plume_on_slope       <- copy of plume_on_slope
991      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
992      tutorial_global_oce_optim     <- empty for now (David ?)
993      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
994     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
995    o correct a sign problem in cost_scat.F
996    o obcs and ptracers: fix boundary conditions for advections schemes
997      with larger stencil
998    o thsice adjoint: start
999    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1000      completeness
1001    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1002      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1003    o ptracers adjoint:
1004      * avoid extensive recomputatations
1005      * fix missing re-init. of gptr (missed by TAF)
1006    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1007      me to turn off the excessive output to STDOUT that this package produces
1008    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1009      and add those terms in Vector-Invariant formulation.
1010    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1011      if the control period (xx_hfluxperiod etc) is 0
1012    o in profiles pkg, clean routines and fix details
1013    o in ecco pkg, reading ssh data:
1014      fix problem in case the model does not start at iter0=0
1015    o fix mnc-pickup/restart for ptracers
1016    o new package prifiles:
1017      code to compute profile-based cost by Gael Forget
1018      (modifs in ecco, ctrl, autodiff)
1019    o Benign bug fix in initialization (spotted by M. Mazloff) of
1020      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1021    
1022    checkpoint58c_post
1023    o adjoint: finish NLFS adjoint and provide reference output in
1024      verification/global_ocean.90x40x15/results_ad_nlfs
1025    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1026      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1027      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1028      with SEAICE_CGRID defined.
1029    o move calendarDumps from "data" to "data.cal" and clean-up the code
1030      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1031    o add useEXF & useCAL flags (for now, set in hard-coded way)
1032    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1033      (were missing in NH mode, and wrong in quasihydrostatic mode).
1034      waiting for Chris updated version of calc_gw to add those CALLs.
1035    o fix bug in quasihydrostatic S/R ;
1036      add a test for this option: global_ocean.90x40x15.qshyd
1037    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1038      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1039    o add on/off flag useOffLine for package OFFLINE
1040    o seaice:
1041      - modify advection so that it works also on the C-grid
1042      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1043        problem in multi-tile runs with C-grid
1044      - add flags for clipping ice velocities and/or masking solver forcing
1045      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1046        C-grid solver
1047      - added a few comments to seaice_diffusion.F
1048      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1049        are now exclusive)
1050      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1051        required re-ordering the code a little:
1052       + make DAIRN global variable (defined in SEAICE)
1053       + move computation of the viscosities eta and zeta into a new separate
1054         routine (because I need to recompute them in seaice_ocean_stress.F)
1055    
1056    checkpoint58b_post
1057    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1058      update output.txt of exp. aim.5l_cs.thSI
1059    o various mnc cleanups and improvements:
1060      + shrink lookup tables by factor of ~4
1061      + better error reporting when running out of lookup space
1062      + able to handle longer path/file names (up to 500 chars)
1063    o adjoint:
1064      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1065      - TBD: "hidden" mom_vecinv recomp. in dynamics
1066    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1067     (allow to differentiate between forcing components using new integer flags:
1068      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1069     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1070    o ecco
1071      - enable trend removal from SSH anomaly obs.
1072    o adjoint
1073      - a fix for PmEpR when #undef EXACT_CONSERV
1074      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1075      - try to fix "hidden" recomp. in forward_step for NLFS
1076        (NLFS seems broken sometimes after I checked it in)
1077    o seaice:
1078     - add c-grid version of the dynamic solver:
1079       + three new routines that are the c-grid substitute lsr, dynsolver
1080         and ostres
1081       + put a few fields that were local to dynsolver into global common
1082         blocks, so that I can move the computation of stresses etc into
1083         seaice_lsr (saves coding but may break the adjoint).
1084     - replace more hardwired parameters by runtime parameters
1085     - add ice masks that mask the rhs of the implicit solvers where there
1086       is no ice (commented out in seaice_dynsolver, because i am not sure
1087       if this works properly), eventually this should replace the clipping
1088       of ice velocities in seaice_dynsolver to +/-40cm/s.
1089    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1090      include it only where its needed
1091    o move balancing of fluxes before the call of external_forcing_surf
1092    o seaice:
1093      - correct units of turning angles (now they are really in degrees)
1094      - move computation of GWATX/Y out of main routine into dynsolver
1095      - initialize GWATX/Y in seaice_init
1096    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1097      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1098    o seaice: add runtime flags for turning angles (default to zero)
1099    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1100      and trend from exf forcing and ctrl control adjustments
1101    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1102      (since checkpoint57x_post)
1103    o change the default rotation period to 86164.s = the Earth rotation
1104    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1105      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1106    o seaice advection: add code for choosing between the default (2nd order
1107      central differences) and multiDim advection schemes provided by
1108      pkg/generic_advdiff
1109    o seaice:
1110      - removed all references to SEAICE_GRID.h fields from
1111        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1112        (cubed-sphere configuration will change a little)
1113      - grid computations in seaice_init are obsolete now.
1114      - cleaned up code a little so that is easier to read (hopefully).
1115      - added new (better?) discretizations of default advection and diffusion
1116        (turn on with SEAICEuseFluxForm)
1117      - replace 1 in 3d global fields by kSurface in growth.F
1118      
1119    checkpoint58a_post
1120    o seaice:
1121      - bug fix in advect.F
1122    o shelfice:
1123      - separate shelfice load anomaly from pload (breaks with time
1124        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1125        Its default is 0., but it may be computed more cleverly from (unknown)
1126        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1127        done offline. A good approximation of the pressure load anomaly is
1128        necessary to avoid large initial adjustment processes underneath
1129        deep-reaching shelfice.
1130      - small fix in ISOMIP shelfice_thermodynamics
1131      - add more sophisticated thermodynamics of Hellmer (1989), this is
1132        now the default
1133      - give a few constants more intuitive names
1134    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1135      if bulk formulae are used in long integration (especially EmPmR). Turn
1136      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1137      if balancePrintMean, the imbalance that is substracted is printed to
1138      STDOUT.
1139    o fix bug (typo) in obcs_apply_eta.F
1140    o add a new package shelfice which enables us to model the circulation
1141      underneath shelf-ice with draughts of hundreds of meters.
1142     - works
1143     - to do: + include improved thermodynamics
1144              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1145                instead of new field kTopC
1146              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1147                instead of new field R_shelfIce and new code in ini_depth.F
1148                and ini_mask_etc.F?
1149              + adjust vertical mixing schemes?
1150    o seaice pkg:
1151     - add a cpp-flag to include a simple formula for a salinity dependent
1152       freezing point of sea water at the surface
1153     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1154       meridional stresses are now different (and hopefully correct)
1155    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1156       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1157       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1158    o pkg/diagnostics: add options and parameters for regional-statistics
1159       diagnostics ; define regions by reading a region-mask from a file
1160       (might add other options later)
1161    o pkg/bulk_force:
1162     - add option and parameters to use AIM surface-flux formulae.
1163     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1164       others forcing fields (defined in PARM05, parameter file "data") are loaded
1165       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1166     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1167     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1168     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1169       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1170     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1171    
1172    checkpoint58
1173    o add "--embed-source" option to genmake2 which, when the supporting
1174      tools can be compiled (as determined by genmake2) will turn on the
1175      embed_files package which then embeds the entire MITgcm source code
1176      (*.[fFhc] + Makefile) used for the build within the executable
1177      - requested by CNH but off by default
1178      - adds a paltry <9MB to the mitgcmuv executable in most cases
1179      - only writes the output when useEMBEDSRC in eedata is true
1180    o clean up 3-dim. relaxation codes:
1181      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1182      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1183      * Thanks to Tom Haine for testing!
1184    
1185    checkpoint57z_post
1186    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1187      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1188    o fix the pickup behavior for obcs in combination with ptracers
1189    o fix a bug in ptracers_external_fields_load
1190    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1191      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1192    o transfered surface NH pressure to eta field (if exactConserv).
1193    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1194         and update lab_sea output.txt file.
1195    o completing 3-dim. relaxation code: additional term
1196         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1197      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1198      * At compile time, in "EXF_OPTIONS.h" set
1199          #define  ALLOW_CLIMTEMP_RELAXATION
1200          #define  ALLOW_CLIMSALT_RELAXATION
1201      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1202          tauThetaClimRelax3Dim = 15552000.0,
1203          tauSaltClimRelax3Dim  = 15552000.0,
1204      * 3 cases:
1205          1) Use a constant-in-time 3-dim. field
1206          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1207          3) Real-time relax. to time-evolving prescribed field
1208    o Adding Laplacian-type smoothness constraint on
1209      initial and boundary (forcing) controls (ic, bc)
1210      * enable at compile-time via
1211        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1212      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1213      * Absolute scale somewhat unclear so far
1214      * no area weighting was included since no other cost term does so far
1215    
1216    checkpoint57y_post
1217    First step for a NLFS adjoint
1218    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1219    o new init. routines for calc_r_star, calc_surf_dr
1220    o still need to deal with ini_masks_etc
1221    o testreport seemed happy
1222    checkpoint57y_pre
1223    
1224    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1225    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1226    o add new offset feature to offline pkg (plus minor cleanup)
1227    o cfc fixes for final year of integration
1228    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1229      be in GCHEM_OPTIONS).
1230    
1231    checkpoint57x_post
1232    o fix testreport Pb in multiple test experiment.
1233    o cleanup our namelist syntax in verification:
1234      - make it more F95 standards compliant (some work still needed)
1235      - allows the vast majority of our tests to work with gfortran
1236    o Non-Hydrostatic:
1237     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1238     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1239    o Allow to apply AB on T,S rather than on AB(gT,gS):
1240     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1241     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1242       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1243     - need a "clever" read_pickup to restart from the other AB formulation
1244    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1245    o remove some unused variables (reduces number of compiler warnings)
1246    o adjoint
1247      * Disable useVariableViscosity for adjoint for time being
1248        (there are a number of extensive recomputations)
1249      * Initialize certain variables needed for adjoint
1250    
1251    checkpoint57w_post
1252    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1253                 fix the singleCpuIO RS version of MDSWRITEFIELD
1254       and add a WARNING if using globalFiles=T with multi-processors.
1255    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1256      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1257    o tracer advection scheme:
1258      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1259       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1260       was not very convenient).
1261      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1262       (further tests needed for the implicit DST & Flux-Limiter schemes).
1263    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1264      and sRef for convenience, handy, when you want to initialize
1265      ptracers in a large domain with a constant non-zero value. Also,
1266      untangle ptracers_init.F a little.
1267    
1268    checkpoint57v_post
1269    o change dome exp. to use variable viscosity in side-drag terms.
1270    o remove all the files from the cfc_offline test since they are now
1271      incorporated into tutorial_cfc_offline which has been producing
1272      identical results for a few days of testing
1273    o add new parameter: sideDragFactor to enable half-slip-side BC
1274      and change side-drag S/R to use viscosity from mom_calc_visc
1275      (can switch back by setting sideDragFactor=0.); affects results at
1276      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1277       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1278    o vorticity & strain are now computed without masking, to account for
1279      no-slip-side BC in variable viscosity calculation ; mask is applied
1280      anyway later on, before computing advection/coriolis terms.
1281    o modify exp4 to test new obcs support for reading from external files
1282      and for passive tracers
1283    o fix behavior of ptracers_monitor when monitor output is written to a
1284      netcdf-file; still not independent of monitor.F (writes in the same
1285      file).
1286    o change default value of tRef (put a uniform, meaningful value for ocean
1287      & atmos) and initialize sRef (was missing, as Martin mentioned).
1288    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1289      to be proportional to enstrophy dissipation length.  Thus,
1290       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1291      This is now consistent with Smagorinsky and with the manual.
1292    
1293    checkpoint57u_post
1294    o OBCS and PTRACERS: add open boundary support for passive tracers
1295      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1296        OB-values from file; this is not different from the way theta and salinity
1297        are treated
1298      - however, Orlanski-radiation conditions are not supported, and the model
1299        will stop if you use pTracers and Orlanski at the same time.
1300      - beefed up the rountine obcs_external_fields_load: now only those open
1301        boundary values are overwritten with values from files for which there
1302        are really files, otherwise the OB-fields remain untouched. This makes
1303        it possible to use different OBs at different ends of the domain (as
1304        with EXF)
1305    o reduce number of exch calls in shap_filt (s2).
1306    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1307      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1308    
1309    checkpoint57t_post
1310    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1311    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1312      same truncation, independent of the face number: affects affects several
1313      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1314    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1315      note that biharmonic viscosity + no-slip was not tested in any experiment.
1316    o fix bug in non-linear free-surf side-drag ; generate new output for
1317      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1318    o make mnc honor the writeBinaryPrec flag for most kinds of output
1319    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1320    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1321      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1322    o add brackets in multi-terms sum to get same truncation, independent of
1323      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1324      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1325    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1326      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1327      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1328      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1329      Suggested values of viscosity parameters found in mom_calc_visc.
1330      Many new viscosity diagnostics available.
1331    
1332    checkpoint57s_post
1333    o Add clearing-house for viscosity calculations, mom_calc_visc and
1334      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1335      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1336      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1337      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1338      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1339      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1340      ViscAhStrain and viscAhTension are now retired.
1341    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1342    o In response to JMC's bug report, genmake2 now ignores any soft-links
1343      that it finds in the *current* directory when searching for files.
1344      Soft-links found in any other source directories will still work as
1345      they did before.
1346    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1347      a C routine to unlimit the stack size
1348    o mnc-ify pkg/aim snapshot vars
1349    o mnc-ify pkg/land as requested by Daniel
1350    o various changes to mnc including:
1351      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1352      - output can now be grouped so that all files within a group
1353          change the ITER portion of their names in lock-step together
1354      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1355          and works with both EXCH1 and EXCH2 (but needs more testing)
1356      - writing works for all verification test cases w/ g77 on Linux
1357    
1358    checkpoint57r_post
1359    o make MNC variable initialization happen earlier
1360    o add diagnostics for (almost) each term of the momentum Eq.
1361    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1362    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1363    o remove MINIMAL_TAVE_OUTPUT option ;
1364      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1365    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1366      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1367    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1368    o add time-dependent SST, SSS control
1369    o cost terms in ecco/ modularized (new cost_generic.F)
1370    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1371    o new infrastructure for seaice model vs. obs misfits in seaice/
1372      * driver from the_main_loop.F is seaice_cost_driver.F
1373      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1374      * gradient check in Exp. 6a of natl_box_adjoint/
1375    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1376      (see README file)
1377    
1378    checkpoint57q_post
1379    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1380    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1381      - bug was reported by Jean-Michel and Ian Fenty
1382    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1383      update exp. cpl_aim+ocn output.
1384    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1385      Needed for high-res. runs with large global files
1386      to be able to limit tapelev size
1387    o Changed some tests for adjoint:
1388      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1389      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1390      * global_ocean.90x40x15/ back to default 3-level checkpointing
1391    o Modifications to enable scripted COMMON to MODULE conversion
1392      * verification/OpenAD/code/ has necessary scripts and description;
1393      * converts, compiles and runs successfully;
1394    
1395    checkpoint57p_post
1396    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1397    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1398      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1399    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1400    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1401      (was already the case for dissipation with mom_vecinv,
1402       and also the case for grad.PhiHyd when staggered-timeStep)
1403      This will allow to put dissipation out-off the AB time-stepping.
1404     Unfortunately, affects truncation error. Update output of exp. that "fails"
1405      (cg2d matching number) and leave the others for later: front_relax(10),
1406      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1407      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1408    
1409    checkpoint57o_post
1410    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1411      (2) its ready to be documented during the 20050801 DocFest
1412    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1413      for ideal_2D_oce and lab_sea on linux_ia32_g77
1414    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1415      in global1x1_tot/code_seaice_adj to access indices 32, 33
1416      (worth another tag)
1417    
1418    checkpoint57n_post
1419    o adding precip control xx_precip 32
1420    o adding swflux control xx_swflux 33
1421    o Replacing 10 forcing penalty cost routines by 1 generic.
1422    o Implementing partitioning in time-mean and variable adjustment
1423      for atmos. state.
1424    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1425    o in natl_box_adjoint:
1426      * updated exp 1 to 10
1427        (but does not have time-mean vs. variable split results yet)
1428    o updated global1x1/*_seaice_adj/
1429      to incorporate latest changes
1430    o enable useSingleCpuIO for mdsio vector routines
1431      (applies in particular to tapelev I/O)
1432    o removed inefficient K-loop in all active_file*control*.F
1433    
1434    checkpoint57m_post
1435    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1436      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1437    o pkg/exch2: filling of face-corner halo regions is optional
1438      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1439    
1440    checkpoint57l_post
1441     tag before updating tutorials (pre-release-2)
1442    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1443       for output and interpolation of input fields onto model grid)
1444    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1445       Affects results of exp. rotating_tank ; update output.txt.
1446    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1447          and taking the square quantity and/or using a fraction-weight field.
1448    o fix aim_diagnostics_init.F mate numbers.
1449    o add mnc output capability to diagnostics/diagstat and update
1450      our cvsignore files for the ACSII output generated
1451    
1452    checkpoint57k_post
1453    o lab_sea now uses diagnostics package and provides a suite of
1454      new EXF diagnostics output.
1455    
1456    checkpoint57j_post
1457    o exf
1458      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1459        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1460        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1461      * extended diagnostics output
1462        - now includes all EXF variables
1463        - hs, hl moved to common block
1464        - separate S/R for diagnostics, called after ctrl vector is added
1465        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1466        - EXFqnet contains true Qnet (i.e. includes qsw)
1467      * updated verif. lab_sea, global_with_exf
1468      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1469        to ensure that diagnostics sees a true EXFqnet
1470    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1471    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1472      several times with different frequencies.
1473    o mnc-ify the thsice package as requested by Daniel Enderton
1474      - the monitor--MNC output needs work
1475      - many attributes need to be added (most are currently blank)
1476    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1477      - many attributes need to be added (most are currently blank)
1478    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1479    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1480    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1481      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1482         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1483    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1484     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1485    
1486    checkpoint57i_post
1487    o Diagnostics package was changed: diagnostic allocation is now deactivated
1488      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1489    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1490      add 1rst Order upwind vertical Shear.
1491    o add a quick fix for A/B checkpointing in OFFLINE mode
1492    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1493      end-run around the C/Fortran linking horror in eesup/src/timers.F
1494    o added pkg/runclock: allows user to terminate run based on wall clock
1495    o added non-hydrostatic scaling parameter: nh_am2
1496    o pkg/my82: futile attempt to make results compiler-independent by adding
1497      some "_d 0", etc. no effect.
1498    o for mnc output, fill the 'T' coordinate var with myTime and create a
1499      separate 'iter' variable for iteration count
1500    o pkg/diagnostics:
1501      add new capability: output of Global/Regional & per-level statistics ;
1502      tested against monitor output (including land & thSIce) on various exp.
1503    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1504    
1505    checkpoint57h_done
1506      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1507      data.diagnostics, data.gchem, data.ptracers) is done.
1508    
1509    o pkg/diagnostics: prepare for Global/Regional statistics.
1510      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1511    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1512      and rename it: DIFFERENT_MULTIPLE
1513    
1514    checkpoint57h_post
1515    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1516    o pkg/diagnostics: change output frequency, now in seconds (instead
1517      of Nb of iterations). This requires to change data.diagnostics.
1518    checkpoint57h_pre
1519    
1520    o in mnc, let the user create the output dir if both mnc_outdir_date
1521      and mnc_outdir_num are false
1522    o add fflags() to pkg/diagnostics which allows one to specify, on a
1523      per-file basis, the file precision [default behavior is unchanged]
1524    o added diagnostics to pkg/kpp, including computation of mixed layer
1525      depth based on a temperature/density criterion
1526    o updated verification/natl_box to test the new pkg/kpp diagnostics
1527    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1528    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1529    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1530      not mnc -- this mistake was found by JMC and is now corrected
1531    
1532    checkpoint57g_post
1533    o add Adams-Bashforth 3rd Order time stepping:
1534      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1535      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1536    checkpoint57g_pre
1537    
1538    o make lambda[Theta,Salt]ClimRelax spatially varying
1539      (default remains spatially uniform constant based on tau)
1540    o added new control variables
1541      * init. uVel, vVel, etanN
1542      * lambda[Theta,Salt]ClimRelax
1543    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1544      (suggested by G. Forget)
1545    
1546    checkpoint57f_post
1547    o add parameter "baseTime" = model base time = time at iteration zero
1548      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1549      account for baseTime shift
1550    o move Coriolis arrays from PARAMS.h to GRID.h
1551    checkpoint57f_pre
1552    
1553    o mnc-ifying the seaice package
1554    o introduced an alternative length scale calculation for use in the limiting
1555      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1556    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1557    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1558      as well as grad(vort3).  Made it compatible with both approximate form
1559      for the cubed sphere and full form of these gradients.  Added flag
1560      useFullLeith to select between approximate and full form.  
1561    o add "d0" in getcon.F to reduce differences between compilers/platforms
1562      update output.txt of exp. fizhi-gridalt-hs
1563    o change port_rand funtion to allow to set the seed.
1564    o fix obscure MNC bug involving conversion between reals and integers
1565      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1566        new version is now more standards-compliant
1567    o adjoint-related modifications
1568      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1569      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1570      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1571    
1572    checkpoint57e_post
1573    o Adding eddy stress controls a la Ferreira et al.
1574    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1575    
1576    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1577      update output.txt of exp. fizhi-gridalt-hs
1578    o add more "Z" dimensions and associated coordinate vars to MNC
1579    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1580    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1581      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1582      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1583      months and years.  Requires pkg/cal.
1584    o diagnostics: add pickup functionality
1585      - off by default for backwards compatibility
1586      - current version only uses MDSIO -- MNC will be added
1587    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1588    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1589    
1590    checkpoint57d_post
1591    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1592    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1593      output from the diagnostics package
1594    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1595    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1596      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1597    o add coordinate variables to the MNC output from the diagnostics package
1598    o change MNC-flags default value: true when useMNC=TRUE
1599    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1600      the ability (off by default) to read the grid information using MNC
1601    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1602    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1603    o do snap-shot diagnostics at the middle of the time-interval (instead of
1604      at the end).
1605    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1606      new test for AIM with thSIce + slab-ocean
1607    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1608    o move state variable diagnostics to the beginning of the time step ;
1609      (note: still needs some work specially for snap-shot diagnostics)
1610      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1611    
1612    checkpoint57c_post
1613    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1614    o generate new output.txt files on faulks with g77 & the new -ieee option
1615    checkpoint57c_pre
1616    
1617    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1618      update output.txt of exp. global_ocean.90x40x15
1619    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1620      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1621    o add saltFlux(+File) forcing capability with periodicExternalForcing
1622    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1623    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1624    o improvements for the MNC output from DIAGNOSTICS:
1625      - correct handling of the unlimitied dimension
1626      - all dims now have associated coordinate variables
1627      - variables located at U, V, and Corner ("Z") points are now written
1628        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1629        *all* data points are output
1630    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1631    o added pkg/seaice/seaice_monitor.F
1632    o mdsio_readfield.F can now read files visible only to master MPI process.
1633    o pkg/seaice: some test code for ice-modified ocean stress
1634    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1635      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1636      spurious negative numbers for precipitation and humidity.  Will cause
1637      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1638    o pkg/ctrl/
1639      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1640        May be enabled via doPackDiag
1641      *  introduce z-scaling of
1642         + gradient (doZscalePack) and
1643         + control (doZscaleUnpack)
1644    o pkg/mdsio/
1645      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1646      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1647    
1648    checkpoint57b_post
1649    o simplify options in diagnostics_fill arguments (remove weird combinations)
1650    o fix MNC coordinate variables so that they now contain per-face index
1651      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1652      general, EXCH2 grids are only aligned to a "local" coordinate system
1653    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1654    o Implement instantaneous output within pkg diagnostics:
1655      setting a negative frequency in data.diagnostics produces
1656     "snap-shot" output (as opposed to time-average if freq > 0)
1657    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1658      NOTE: change ptracer diagnostics name: use 2 characters to work with
1659            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1660    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1661      becomes the coordinate variable for the 'T' dimension
1662    o add CF-style coordinate variables to MNC
1663      - just a first cut:  numbers are meaningless on the cubesphere and
1664        missing along the T axis but otherwise it works!
1665    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1666    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1667    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1668      this is based directly on what the model compute, so that the content of
1669      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1670    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1671    o clean up build options files for SunOS, in particular
1672      - remove -traditional from xmakedepend
1673      - change -xarch=v9 to -xarch=native for f77
1674      - restore use of make (not gmake)
1675      - add CC=gcc if using g77
1676    o changes per discussion of AM, JMC, & EH3 today:
1677      - move redundant "grid" variables out of "state" -- in preparation of
1678        creating proper CF-style coordinate variables and in recognition
1679        that any/all grid variables can be easily copied (eg. w/NCO) from
1680        the grid files into any of the other NetCDF files
1681      - *always* output grid variables with MDSIO (this will eventually be
1682        changed)
1683      - output MNC grid file if useMNC is true
1684    o every instance of _END_MASTER() has been found and replaced with
1685      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1686      preprocessors
1687    o re-arrange diagnostics pkg initialisation:
1688     - allow each package to extend the available diagnostics list
1689     - add some checking and fix small problems (multi-threaded, ...)
1690     - new S/R diagnostics_fill (replace fill_diagnostics):
1691       look through the short list of active diag. (instead of the long list)
1692       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1693    
1694    checkpoint57a_post
1695    o this set of changes restores TAMC compatibility
1696      tested for global_ocean.90x40x15 adjoint on trough
1697      (what a pain)
1698    
1699    checkpoint57a_pre
1700    o some modifs in tools/build_options for sunos
1701    o call ctrl_pack for ctrl at end for optimcycle=0
1702    
1703    checkpoint57
1704    o add horizontal bi-harmonic viscosity for vertical velocity
1705      - new parameter viscA4W (defaults to viscA4)
1706      - affects only non-hydrostatic code
1707      - to be done: no-slip lateral boundary conditions
1708    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1709    o implement Implicit Vertical advection for pTracers
1710    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1711      (implemented also for implicit vertical diffusion & advection)
1712    o OBCS: extend application of tracer open boundary conditions
1713      to a strip beyond the boundary of width Olx/Oly
1714    o add call monitor to TAF set of required calls (flow directives)
1715      and include in natl_box_adjoint
1716    o untangle a few ifdefs related to cost, ctrl, autodiff
1717      untangel a few ALLOW_ECCO_OPTIMIZATION
1718    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1719      (theta2, salt2 in ecco_cost_weights)
1720    
1721    checkpoint56c_post
1722    o OBCS as control variables
1723      - update ctrl_ad_diff.list, obcs_ad_diff.list
1724      - remove balance of obcs controls from default
1725      - fix index bug nobcs in ctrl_init
1726      - fix dummy fields filen in ctrl_pack
1727      - add dummy weights for obcs
1728    o lsopt: comment out fort.94 output
1729    o optim:
1730      - remove unnecessary header files
1731      - adjusted namelists
1732      - add xerbla.F to Makefile
1733    o exf:
1734      - multiple modifications of exf_check_range
1735      - unit change in exf_init_runoff from [m/year] to [m/s]
1736    o mdsio:
1737      - i/o-vector change debugLevel from debLevA to debLevB
1738    
1739    checkpoint56b_post
1740    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1741      is called from DO_THE_MODEL_IO
1742      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1743      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1744      - clean up PTRACERS_WRITE_TIMEAVE a little
1745    o add another verification experiment that tests both the cfc-pkg and
1746      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1747      reactive tendencies treated inline with regular timestepping
1748    o testreport previously did a lousy job of comparing small numbers, so
1749      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1750      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1751      testreport.
1752    o ptracers_monitor: bug fix for MPI
1753    
1754    checkpoint56a_post
1755    o GCHEM: finish reorganizating the package
1756      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1757        (introduces another 3D-array for each passive tracer, but only if
1758        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1759        gchemTendency is not needed because the timestep is done separately)
1760      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1761      - GCHEM is now---more or less cleanly---separate from PTRACERS
1762      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1763        so clear to me how that should be done in a general way.
1764    o CFC: improve formatting of output in CFC_ATMOS
1765    o PTRACERS:
1766      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1767        that ALL experiments with ptracers enable can be checked. This makes
1768        GCHEM_MONITOR obsolete.
1769      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1770        monitorFreq
1771      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1772    o add PTRACERS (PTR0[1-5]) to testreport output
1773    o exf_check_range:
1774      * default changed to .TRUE.
1775      * will check values for niter0 if debLevA, every timestep if debLevB
1776      * STOP in exf_check_range if 'out of range'
1777      * range chosen generous to allow for potential extema
1778      TBD: a version with stricter range
1779           permitted range would be runtime parameters
1780    o GMredi:
1781      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1782      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1783      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1784    o GCHEM:
1785      - move call to GCHEM_FORCING_SEP, so that it is now called before
1786        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1787      - introduced a useGCHEM runtime flag and applied it everywhere.
1788      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1789        this flag is now only visible within GCHEM-pkg routines.
1790      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1791        be replaced by a 3D array that is computed before thermodynamics; for
1792        this, the tracer ID iTracer had to be included into the parameter list
1793        of ptracers_forcing
1794      - set up forward_step to call gchem_forcing, that will replace
1795        gchem_forcing_int in ptracers_forcing
1796      - cleaning up
1797    o small cleaning of exch2: remove files that are also in eesupp/src
1798    
1799    checkpoint56
1800    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1801    o mnc: cleanup "full" files--fixes out-of-memory problem
1802    o ECCO-GODAE
1803      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1804      * fully merged and updated from SIO code
1805        windstress sign change affects
1806        - exf_inscal_[u/v]stress
1807        - sign of xx_tau[u/v] adjustments
1808        - signs in cost_scat
1809      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1810      * natl_box_adjoint updated and compressed
1811      * 2-level checkpoint switch added
1812        (tested in EXP. 1 of natl_box_adjoint)
1813      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1814    o SVD
1815      * first complete, non-hacked version for SVD calculations
1816      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1817        performed via direct access files admtlm_vector.it????
1818        (via ctrl_[un]pack)
1819      * optimcycle is used for ARPACK iteration counter
1820        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1821      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1822        and add linear transforms where necessary
1823      * controls are initial/final SST, SSS (can be extended; need to check
1824        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1825    o mdsio: filename info to both stderr, stdout
1826    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1827      from sign change
1828    
1829    checkpoint55j_post
1830    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1831      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1832    o add consistent build directories and .cvsignore files to verification
1833    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1834    o make all subroutines 30 or less characters in length for certain older
1835      compilers to work (a thorough search only turns up two routines in
1836      pkg/ptracers)
1837    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1838      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1839    
1840    checkpoint55i_post
1841    o change arrays for total vertical diffusivity (2.D if explicit,
1842      3.D if implicit) ; each ptracer uses its own background value.
1843    o added mnc/NetCDF output capability to ocn_compon_interf
1844      - added bits to verification/cpl_aim+ocn so that it can run on
1845        ITRDA and other clusters without the mpirun "-wd" option
1846    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1847      configuration
1848    o give MNC the ability to create additional files rather than
1849      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1850      - the default is just less than 2GB which is a practical limit
1851        on many systems
1852    o Compute the non-local term using either KPP vertical diffusivity (=default)
1853       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1854    
1855    checkpoint55h_post
1856    o add verification test "vermix"
1857    o remove all the *_ioinc flags and replace with the single global
1858      outputTypesInclusive flag
1859    o allow to set a vertical profile of vertical diffusivity for T & S
1860    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1861    o useMNC moved from data.mnc to data.pkg
1862    
1863    checkpoint55g_post
1864    o Renaming carbon AD experiments to comply with testreport conventions
1865    o Updating adjoint of Held-Suarez hs94.1x64x5
1866    o Fixing directives for non-ECCO forward_step, after ECCO directives
1867      have been fixed to avoid recomp. of do_oceanic_phys
1868      Works well for global_ocean.90x40x15,
1869      but recomp. issue remains for carbon
1870    o Updating adjoint output for natl_box_adjoint after
1871      pkg/ecco has been modified (see taga c55d_post)
1872    
1873    checkpoint55f_post
1874    o rename to timeave_init_fixed
1875    
1876    checkpoint55e_post
1877    o some delicate re-shuffle of store directives to avoid one
1878      extra call of do_oceanic_physics
1879      affects ecco_the_main_loop.F, do_oceanic_physics.F
1880      checkpoint_lev1_directives.h
1881    o NB: this may break global_ocean adjoint temporarily,
1882      but it is clear how to fix it. Will do later, need this now.
1883    
1884    checkpoint55d_post
1885    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1886    o ecco_cost_weights is modified to 1x1 runs
1887    o modifs to allow observations to be read in as
1888      single file or yearly files
1889    o enable to read exf forcing fields as either
1890      single file or yearly files (flag useExfYearlyFields)
1891    checkpoint55d_pre
1892    
1893    o switch between 2-level and 3-level checkpointing
1894    o add ability of MNC to write local and "partial" (eg. 2D slices where
1895      the full 3D field is never actually stored) arrays to NetCDF files
1896      with the correct (that is, the complete multi-dimensional) set of
1897      array indicies
1898      - used in mom_vecinv() to write the diagFreq output
1899      - tested (demonstrated) in verification/aim.5l_cs
1900    o further mnc-ification
1901      - add verification/lab_sea to the list with mnc setups
1902      - fix undefined mnc v-names in cd_code
1903      - add kpp to mnc output (both snapshot and timeave)
1904    o non-hydrostatic code
1905      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1906        in calc_gw.F
1907      - defaults to viscAh
1908      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1909        friction or Leith) in non-hydrostatic mode, as long as there is
1910        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1911    o pkg/cost
1912      extend simple cost functions to treat time mean quantities
1913      (T,U,V) via cost_accumulate_state from cost_tile
1914    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1915        be 2 times larger than the minimum size the advection scheme requires.
1916        now get a perfect conservation of salt in advect_cs test-exp (updated)
1917    o GGL90 (Gaspar's TKE mixed layer)
1918      - add horizontal diffusion of TKE, requires exchanges in
1919        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1920        default. In OPA there is no horizontal diffusion of TKE but the
1921        mixing coefficients are computed from a horizontal average of TKE of
1922        6 points or so. I think that diffusion has a little more physical
1923        justification.
1924      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1925        was in vain)
1926      - mask tke-variable in ggl90_init
1927    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1928    o fix biharmonic diffusion on CS-grid.
1929    o more obcs stuff
1930      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1931        for reading boundary values. This routine is called from
1932        obcs_prescribe_read
1933      - updated obcs_check
1934      - changed sponge layer relaxation parameter units for days to seconds
1935      - turned off sponge layer by default
1936      - changed argument list of OBCS_CALC to myTime+deltaTclock
1937      - fixed about 35 bugs in obcs_external_fields_load
1938    
1939    checkpoint55c_post
1940    o obcs stuff
1941      - new runtime flags useOBCSprescribe, useOBCSbalance
1942      - re-arranged obcs_calc
1943      - moved exf_getobcs to obcs_prescibe_read
1944        obcs_prescibe_read is called after ORLANSKI stuff
1945        and independent of it (executable can contain all).
1946      - updated obcs_check
1947      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1948        These may be necessary only if tangential velocities are
1949        prescribed at OB, not sure, needs testing.
1950    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1951      which simplifies the calls and passes the ifc check-bounds test
1952    
1953    checkpoint55b_post
1954    o add a 2D scalar, Z location, exchange_2 routine.
1955    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1956      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1957      affects advect_cs results (for the wrong reason): update output.txt
1958    o use a more standard discretization for biharmonic viscosity ;
1959     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1960      affects results of dome set-up: update output.txt
1961    o fix gad_advection.F (CubedSphere part), back to version 1.23
1962    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1963    
1964    checkpoint55a_post
1965    o merged code to
1966      * prescribe/read time-dependent open boundaries
1967        (works in conjunction with exf, cal)
1968      * sponge layer code for open boundaries
1969      * each boundary N/S/E/W now has its own CPP option
1970        (healthy for the adjoint)
1971    
1972    checkpoint55
1973    o up-to-date adjoint of previous breaks
1974      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1975      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1976      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1977      - carbon: * remove tr1-related adjoint verification
1978                * add ptracer as control variable
1979    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1980      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1981    
1982    checkpoint54f_post
1983    o in verification/carbin/ remove experiment related to
1984      ALLOW_PASSIVE_TRACER (array tr1 etc)
1985      code_ad/ input_ad/ results_ad
1986    
1987    o add two new packages
1988      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1989        + subject to optimization (memory)
1990      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1991        + subject to reordering (many GOTOs in the original code)
1992        + so far opps is called for every (i,j) point, and then operates in
1993          the vertical; one may want to reorder the scheme in order operate in
1994          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1995          fields)
1996    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1997      - all verification tests compile and run with linux_ia32_g77
1998      - defaults are compatible with current input files--nothing
1999        should change if you were not previously using MNC
2000      - MNC output has been added in numerous places (eg. timeave)
2001        but there are still a few writes not yet do-able with MNC
2002        (this is in progress)
2003      - flags now allow for either/or/both use of MDSIO and MNC and
2004        documentation will soon follow
2005      - numerous small formatting cleanups for ProTeX
2006    o add version info (via BUILD_INFO.h) to MNC and stdout
2007    
2008    checkpoint54e_post
2009    o add two new packages
2010      - pp81 (Packanowski and Philander, 1981), Richardson number and
2011        stratification dependent mixing
2012      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2013      - these scheme operate in a similar manner as KPP (without ghat, of
2014        course), however there is only one diffusivity that is used for both
2015        temperature and salinity (and passive tracers)ç
2016    o add offline package
2017    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2018      provided by Stephanie Dutkiewicz
2019    o genmake2: add ability to search for C compilers and cleanup test output
2020      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2021    
2022    checkpoint54d_post
2023    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2024    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2025      leading to additional shift by 5 days each year of integration
2026       (i.e. leading to considerable offset over the years)
2027    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2028    o start with no AB and no initial filtering (staggerTimeStep):
2029      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2030    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2031      (external loading & cpl import/export stay in forward_step.F)
2032    o update coupling interface to work with new staggerTimeStep
2033    o change MDSIO ptracers_pickup.
2034    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2035    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2036    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2037    
2038    checkpoint54c_post
2039    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2040      this affects (truncation error) output.txt of test-exp:
2041       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2042    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2043    o change Qnet to always be the net heat flux, (+upward).
2044      affects (truncation error) output of natl_box exp.: updated
2045    o define the max number of passive tracers in PTRACERS_SIZE.h
2046    o start to test mnc routinely in exp0
2047    o add sea-ice loading (sIceLoad) as a new forcing field.
2048    
2049    checkpoint54b_post
2050    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2051       impressive on Altix and Opteron systems)
2052    o diagnostics can now write NetCDF files through the mnc package
2053    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2054    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2055    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2056      affects (truncation error) output of lab_sea & natl_box exp.: updated
2057    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2058    
2059    checkpoint54a_post
2060    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2061    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2062    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2063    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2064      + internal_wave (shift in writing cg2d_ini_res)
2065    checkpoint54a_pre
2066    
2067    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2068      - modified verification/lab_sea and natl_box_adjoint accordingly
2069    
2070    checkpoint54
2071    checkpoint53g_post
2072    o prepare splitting of thermodynamics: store convect.counter in common block
2073    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2074      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2075    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2076    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2077    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2078    o restore adjointability
2079    
2080    checkpoint53f_post
2081    o modifications that affect AIM experiment results (update output.txt):
2082      - no advection of S at top interface Nr (pkg/generic_advdiff)
2083      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2084    o AIM pkg:
2085      - include stability function into surf.Flux derivative relative to Tsurf
2086      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2087    
2088    checkpoint53e_post
2089    o merged cylindrical coord configuration
2090    o added rotating_tank experiment
2091    checkpoint53e_pre
2092    
2093    checkpoint53d_post
2094    o faulks upgraded: re-generate output.txt that have changed:
2095       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2096    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2097    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2098    o added Sadourny discretization of Coriolis
2099      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2100      - re-enabled use of omega3 (useAbsVorticity)
2101    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2102      vector-invariant equations
2103      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2104    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2105      hopefully without new bugs
2106      - still to do: biharmonic friction for non-hydrostatic w
2107    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2108    o regenerated output for global_ocean_ebm (using -ieee)
2109    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2110      of mom_common/
2111      - simple re-arrangement of instructions within computing loop
2112    checkpoint53d_pre
2113    
2114    checkpoint53c_post
2115    o new version of coupler for AIM+thSIce and Ocean models
2116     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2117     - land: change Evaporation of snow
2118     - aim with thSIce: fix bug in snow-precip.
2119    o changes to calc_gw.F
2120     - bug fix for w^2 term near the bottom boundary
2121     - (hopefully) improve the lateral slip boundary condtions for use with
2122        partial/looped cells
2123      - because the bug fix changes two verification experiments anyway (exp5
2124        and plume on slope), change the lateral boundary condition from half slip
2125        to the value of no_slip_sides
2126    o ebm package wasnt quite up to the parallel task. Fixed that.
2127    o Adjoint of EBM package + verification
2128      * TLM OK
2129      * ADM not sufficient accuracy yet (needs further testing)
2130    
2131    checkpoint53b_post
2132    o Commiting new energy balance model to repository
2133      * package is pkg/ebm
2134      * verif. is verification/global_ocean_ebm
2135      * references are in ebm_driver.F
2136    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2137    C        Global thermohaline circulation. Part I:
2138    C        Sensitivity to atmospheric moisture transport.
2139    C        J. Climate 12(1), 71-82
2140    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2141    C        Global thermohaline circulation. Part II:
2142    C        Sensitivity with interactive transport.
2143    C        J. Climate 12(1), 83-91
2144    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2145    C        Destabilization of the thermohaline circulation
2146    C        by atmospheric eddy transports.
2147    C        J. Climate 7(12), 1870-1882
2148    o Will need long integration testing.
2149    checkpoint53b_pre
2150    
2151    o created pkg/mom_common in preparation for variable viscosity code
2152    o renamed and split ini_mnc_io
2153    o pkg/land: only liquid water can diffuse or run-off
2154    o AIM using land: soil wetness availability account for snow
2155    o added printMapIncludesZeros to EEPARMS namelist
2156    
2157    checkpoint53a_post
2158    o restore TAMC compatiility for exf_constants.h
2159      (no usage of _d in .h)
2160    o Additional storing in KPP in an attempt to fix
2161      TAMC problem with adjoint of KPP code.
2162      (no success...)
2163      Identical code works fine with TAF.
2164    o Fixed verification/natl_box_adjoint experiments.
2165      Initial conditions for Experiments 4 and 5 are now
2166      set to "SEAICE_initialHEFF=0", which is more reasonable,
2167      and hence gives results closer to that of Experiment 2.
2168      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2169    
2170    checkpoint53
2171    o stable checkpoint with up to date adjoint
2172      TLM tests only run for 1st grdchk at the moment. Its unclear if
2173      this is a code problem or a problem with resetting code for g_
2174      variables that is being autogenerated wrong.
2175      Otherwise:
2176       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2177       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2178         are both still in chaos following their security messes.
2179    
2180    checkpoint52n_post
2181    o various build (mostly genmake2) changes including:
2182      - ability to build/run more easily within Cygwin and MacOS X
2183      - more complicated Makefiles with a stronger dependence on Gnu Make
2184    o pkg/seaice modifications
2185      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2186        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2187        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2188      - changed proxy for geostrophic velocity and updated
2189        verification/lab_sea/results/* accordingly
2190      - removed ADI dynamic solver from pkg/seaice
2191      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2192        they caused a segmentation fault under certain circumstances
2193      - removed unused field WATR
2194    o bug fix in exf-package:
2195      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2196         now reflect that.
2197    o small fixes in the cal-package:
2198      - set reference date to first of January for the 'model'-calendar
2199      - failing of cal_CheckDate in cal_FullDate now actually results in a
2200        warning
2201    o small modifications in exf-package to increase flexibility:
2202      - change climtempfreeze from a constant to a runtime parameter that
2203        is specified in data.exf_clim (default = -1.9)
2204      - introduce runtime parameter windstressmax (default = 2.0) that is
2205        specified in data.exf
2206    o fix in pkg/thsice:
2207      - update Evap (Tsf changes) to be consistent with Latent heat flux
2208      - maintain snow precipitation unchanged (even if Tsf >=0).
2209     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2210    
2211    checkpoint52m_post
2212    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2213      this does not change any of the results, because myIter=0 in swfrac always
2214      lead to jwtype=2 (the default anyway), but the call makes little sense
2215      as a default
2216    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2217    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2218      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2219    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2220    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2221    o extending useSingleCpuIO option to work with new exch2 I/O format
2222      - old-style, missing-tile I/O is still accessible by defining CPP
2223        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2224    o monitor package can write to NetCDF files and/or STDOUT
2225    o fix re-definition bug in MNC_GRID_INIT_ALL()
2226    o doc/api_reference added
2227      - a framework for building an API Reference Manual using all
2228        the "protex" comments embedded in the code
2229      - see pkg/generic_advdiff, pkg/mnc for examples
2230    o MNC:
2231      - make myThid the last argument for all subroutines
2232      - new default for the grid files: NO halos
2233      - add useMNC and other run-time flags
2234      - separate per-file-group handling of the unlimited dimension
2235      - early initialization of MNC w/ flags read at the eeboot stage
2236        and lookup tables set in initialize_fixed
2237      - write all MNC output to a freshly-created directory
2238    o thermodynamics sea-ice (thsice) is now tested with testreport.
2239    o test exp. advect_cs: use the standard cs32 grid ; update output.
2240    o Added functionality to grdchk:
2241      pick global i,j,k position (or nearest wet) where to perform check.
2242    
2243    checkpoint52l_post
2244    o new land formulation:
2245      a) use ground enthalpy as prognostic variable to ensure exact
2246         energy conservation.
2247      b) account for water temperature and for latent heat of freezing
2248         in all processes (rain, run-off, ground storage)
2249      c) compute surface and ground temperature implicitly.
2250    o aim_v23 modification for new land model:
2251      a) Treat separately land / ocean / sea-ice surface fluxes
2252         to allow implicit computation of land & sea-ice surface temp.
2253      b) add snow precipitation.
2254    checkpoint52l_pre
2255    
2256    o fix problem (when 1 tile is empty) in min/max monitor.
2257    o fix bug in timeAve (u,vZetatave in common block)
2258    o no restoring terms under ice for pkg/seaice
2259    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2260    o bug fix for pkg/seaice pickups
2261    o change MNC call locations and add coordinate attributes
2262    o mask vorticity at the corner ; affects global_ocean.cs output
2263    o fix ini_curvilinear_grid ; test CS experiments with mpi
2264    o aim.5l_cs: modify sea-ice fraction input file ; update output
2265    o exf: Adding simple range check routine for exf fields after read
2266    
2267    checkpoint52k_post
2268    o removed top-level directory "diags"
2269      - we migrated these functions to pkg/timeave a long time ago
2270    o fixed bug introduced in pkg/monitor
2271    o accuracy ctrlprec = 32 insuffient for gradient checks using
2272      averaged fields (I/O via cost_averages)
2273      -> use ctrl.h in active_file*.F to control I/O precision.
2274    o paramter list of CALL ADTHE_MAIN_LOOP
2275    o added initial do_the_model_io to ecco
2276    o set all ...Freq to zero after cost_final
2277      taveFreq, dumpFreq, pChkptFreq
2278    o MAIN and ECCO differentiability restored
2279    
2280    checkpoint52j_post
2281    o fix nchklev in tamc.h for global_ocean...
2282    o Bringing flow and store directives up-to-date
2283    o Really weird thing!
2284      call do_the_model_io from the_main_loop with parameters
2285      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2286      TAF places a faulty re-call of initialise_varia
2287      after cost_final call which should not be there!
2288    checkpoint52j_pre
2289    
2290    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2291      error messages
2292    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2293    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2294      debug output
2295    o modfied mdsio_writefield.F to handle non-global files under exch2
2296    o update AIM Cubed-Sphere exp (aim.5l_cs):
2297      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2298    o update AIM Equatorial Channel exp:
2299      use standard aim_v23 pkg and change the SST fields to be more realistic.
2300    o globalFile now works with exch2
2301    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2302      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2303    o limit timeave output for hi-res integrations
2304    
2305    checkpoint52i_post
2306    o removed CPP_EEOPTIONS.h from verification/*/code
2307    o updated the tiling for global_ocean_pressure
2308    checkpoint52i_pre
2309    
2310    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2311      the old pkg/aim).
2312    
2313    checkpoint52h_pre
2314    o shortened offending lines in exch2_send_rx?.template
2315    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2316    o genmake2: add build & execute test for NetCDF code
2317    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2318      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2319    o added useSingleCPUIO flag to monitor.F and mon_out.F
2320    o added temporary hack for sea-ice dynamics on the cube:
2321      metric terms are ignored and it is assumed that
2322      there is no sea-ice on cube faces 1, 2, 4, and 5.
2323    
2324    checkpoint52f_post
2325    o added exch2 cube routines to pkg/exch2
2326    o modified hs94.cs-32x32x5 to use it
2327    o added new grid files to hs94.cs-32x32x5
2328    checkpoint52f_pre
2329    
2330    checkpoint52e_post
2331    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2332      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2333    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2334      to work with implicit vertical advection and AB ;
2335    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2336    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2337     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2338    checkpoint52e_pre
2339    
2340    o fix bug in impldiff when Nr=1 or Nr=2.
2341    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2342    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2343    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2344      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2345    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2346    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2347    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2348    
2349    checkpoint52d_post
2350    o re-tiled many expts to allow comparison in multi-processor mode
2351      - updated output accordingly
2352      - changed hs94.128x64x5 to use intial T from file rather than use the
2353        random number generator
2354    o add infrastructure in model routines for fizhi and gridalt packages
2355    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2356    o changes to permit hi-res, cubed-sphere, configuration
2357      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2358      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2359      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2360        of surface winds for the cube
2361      (A verification experiment, based on global_ocean.cs32x15, but with
2362       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2363       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2364       complete with example surface forcing files and matlab scripts to look
2365       at the output and compare it with that of global_ocean.cs32x15.)
2366    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2367       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2368       to conform to the common rule.
2369    o check-in the first version of the coupler + interfaces for multi-components
2370       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2371       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2372       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2373       - ocean and atmos. share the same horizontal grid (no interpolation).
2374       - exchanges between component and coupler is done in forward_step
2375    o new verification experiment, cpl_aim+ocn:
2376       coupled ocean - AIM atmosphere on cs32 grid.
2377    
2378    checkpoint52d_pre
2379    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2380    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2381    
2382    checkpoint52c_post
2383    o Fixing OPTIONS files for use of exf:
2384      - ALLOW_ECCO not needed
2385      - ECCO_CPPOPTIONS.h should not be included from
2386        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2387        as has been the case in the past
2388      - All cal/exf related options are currently set in
2389        single header file. Should remain so until we
2390        agree on a consistent new policy.
2391    o Removed all CPP options for cal package.
2392      cal has no more CPP options.
2393    o modified STOREs in GAD_ADVECTION
2394    o corrected key comp. for passkey
2395    
2396    checkpoint52b_post
2397    o new version: "thsice" of thermodynamic sea-ice pkg:
2398     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2399     - modify fluxes but do not change theta directly;
2400     - light cleaning of bulk_force pkg (still needed with thsice).
2401     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2402       + output_thsice.txt to test thsice & bulk_force pkgs.
2403    o put back grid & coriolis monitor output.
2404    checkpoint52b_pre
2405    
2406    o call "do_the_model_io" at the beginning (=> dump initial state)
2407    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2408    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2409      (need info on NUMBER_OF_PTRACERS)
2410    o missing PTRACERS headers in some routines
2411    o default tamc.h in pkg/autodiff supposed to crash
2412      to ensure proper customization
2413    
2414    checkpoint52a_post
2415    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2416      - moved surfaceTendencyTice from pkg/seaice to main code
2417      - subroutine FREEZE_SURFACE now limits only surface temperature
2418        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2419        => new output.txt for global_ocean.cs32x15 & global_with_exf
2420      - keep the old version of FREEZE for backward compatibility;
2421        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2422      - corresponding modifs for TAF directives
2423    o added surface flux output variables to TIMEAVE_STATVARS
2424    o time-averaged output for pkg/ptracers
2425    o fix problem with ECCO-related divided adjoint
2426      snapshot file was missing some ad-variables,
2427      but no warning issued by TAF
2428    
2429    checkpoint52a_pre
2430    o some bug fixes for #undef REAL4_IS_SLOW
2431    
2432    checkpoint52 = ecco_c52_e35
2433    o after testing adjoints of checkpoint51u_post
2434    
2435    checkpoint51u_post
2436    o this is the post-merge tag of the ecco-branch
2437      (needs another clean checkout and re-testing)
2438    o various natl_box_adjoint configs and results
2439      but no input fields
2440    o obcs adjoint not yet merged!
2441    o adding ECCO global 1x1 and 2x2 degree configs
2442    o updated/extended some store directives for seaice
2443    o pkg/ecco now containes ecco-specific part of cost function
2444    o top level routines the_main_loop, forward_step
2445      supersede those in model/src/
2446      previous input data.cost now in data.ecco
2447      (new namelist ecco_cost_nml)
2448    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2449    
2450    checkpoint51t_post
2451    o this is the pre-merge tag of the ecco-branch
2452    
2453    checkpoint51s_post
2454    o cleanup: removed various obsolete #define-s
2455    o pkg/grdchk
2456      - renamed 'ph-grd 3' to 'grad-res'
2457      - merged from ecco-branch
2458        (remaining bug fixes for obcs gradient checks)
2459      - additional high-precision output for testreport
2460        (grep for 'precision_grdchk_result')
2461    
2462    checkpoint51r_post
2463    o cleaned up or removed CPP_OPTIONS.h files
2464    o updated results for some of the tests to reflect the new
2465      optfiles (-ieee: -O0 instead of -O3)
2466    
2467    checkpoint51q_post
2468    o cd_code:
2469      - moved cd_scheme.F -> cd_code_scheme.F
2470      - separate read_checkpoint from cd_code_ini_vars.F
2471      - separated cd_code part from write_checkpoint
2472      - updated AD_SOURCE, generated .flow
2473      - added CD_CODE_VARS.h to the_main_loop
2474      - Moving cd_code specific store dir.s to pkg/cd_code
2475    o ctrl package totally restructured
2476      - pack/unpack now optional and decoupled from
2477        xx_/adxx_ I/O
2478      - ctrl_pack/unpack cleaned
2479        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2480      - confined inclusion of AD_CONFIG.h to where necessary.
2481    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2482    
2483    checkpoint51p_post
2484    o create initial cd_code package
2485      - WARNING: the initialization of fields within packages
2486        is broken because INI_FIELDS (where READ_CHECKPOINT is
2487        called) is called *before* PACKAGES_INIT_VARIABLES.
2488        This seems to be backwards since
2489        1) its important to initially zero the entire field including
2490           the "halo" region
2491        2) zeroing needs to be done *before* reading pickup info
2492           and the pickup call might or might not happen in any
2493           particular run
2494      - this needs an overhaul for R2
2495    o cleanup verification/*/code/GMREDI_OPTIONS.h
2496    o cleanup testreport
2497    
2498    checkpoint51o_post
2499    o bringing AD-related verif's up to date with genmake2
2500      - carbon/
2501      - global_ocean.90x40x15/
2502      - hs.94.1x64x5/
2503      - (front_relax/ )
2504    o (more) consistent directory structure for AD-related verif.'s
2505    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2506    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2507    o bug fix in find_alpha.F for MDJWF:
2508      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2509        change rho -> rho-rhoConst
2510      - replace call find_rho to find_rhonum
2511    o initialisation of rFlx extended to full array (required by TAF)
2512      and shifted to thermodynamics
2513    o removed PTRACERS.h in ptracers routine
2514    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2515    o Correcting initialisations for fVerU, fVerV.
2516    o helping TAF to recognize dependency on kUp for
2517      fVerU, fVerV
2518    o Replacing delZ by delR in pkg/ctrl/
2519    checkpoint51o_pre
2520    
2521    o undid all of cp51 pending some cleanups and discussion
2522    o added the [#include "AD_CONFIG.h"] statement to all files that need
2523       it for adjoint/tl #defines
2524     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2525     o removed tools/genmake since it no longer works
2526    
2527    checkpoint51n_post
2528    o modifications to make FREEZE flux visible to pkg/kpp
2529      - moved surfaceTendencyTice from pkg/seaice to main code
2530      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2531      - subroutine FREEZE now limits only surface temperature
2532        (this means new output.txt for global_ocean.90x40x15,
2533         global_ocean.cs32x15, and global_with_exf)
2534    o added surface flux output variables to TIMEAVE_STATVARS
2535    
2536    checkpoint51n_pre
2537    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2538    o added [#include "AD_CONFIG.h"] to all files that use the following
2539      defines:
2540      - ALLOW_ADJOINT_RUN
2541      - ALLOW_TANGENTLINEAR_RUN
2542      - ALLOW_ECCO_OPTIMIZATION
2543    
2544    checkpoint51m_post
2545    o incorporating changes to get TAMC/TAF working in genmake2
2546      - added new TAMC/TAF targets to the Makefile
2547      - various cleanups related to package handling
2548      - these changes should have no impact on the forward model
2549    
2550    checkpoint51l_post
2551    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2552     - faster algorithm for cal_addtime.F
2553     - higher precision arithmetic, where needed
2554     - pkg/exf *startdate variables changed from calendar date to
2555       model integration time
2556    
2557    checkpoint51l_pre
2558    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2559    o enable to apply restoring on S & T only in a latitude band.
2560    o update output (external_forcing_surf modif. change truncation errors)
2561       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2562    
2563    checkpoint51k_post
2564    o change default to: useNHMTerms=.FALSE.
2565     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2566       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2567     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2568        exp1, ideal_2D_oce
2569     - change data file of oceanic exp (leave the results unchanged for now)
2570       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2571    o set gravitySign automatically according to the vertical coordinate used
2572      (and change sign: back to "logical" value: +1 when R increases downward)
2573    o added an include barrier to the default CPP_OPTIONS.h and
2574      removed the #include "PACKAGES_CONFIG.h" from it
2575    o fix a bug in mom_fluxform (from chk51j_post)
2576    
2577    checkpoint51j_post
2578    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2579    o adjusted some flow directives (dynamics, thermodynamics)
2580    o added cubed-sphere case to test cost function
2581    o heckpoint_lev?_directives.h now include
2582      pkg-specific directives, whenever those are enabled.
2583    o Moving pkg-specific flow directives to corresponding pkg
2584      Moving pkg-specific differentiation list to corresponding pkg
2585      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2586      ---> conventions are
2587           - pkg_ad.flow
2588           - pkg_ad_diff.list
2589           - pkg_ad_check_lev?_dir.h
2590    
2591    checkpoint51i_post
2592    o merge of the branch-genmake2
2593      - knowingly breaks the older genmake
2594      - automatic generation of all ALLOW_${PKG_NAME} defines
2595      - new testreport supersedes older testscript
2596    o large number of package inclusion and header cleanups
2597    checkpoint51i_pre
2598    
2599    o new output for adjoin of global ocean vector invariant
2600    o fix for checkpoint of thermodynamic seaice and bulk_force
2601    o Steph gchem various cleanups
2602    
2603    checkpoint 51h_pre
2604    o fixed some single quotes
2605    o modify gchem pkg to be more versatile
2606    o modifications to clean up dic pkg
2607    o add pkg/cfc
2608    
2609    checkpoint51g_post
2610    o provide links for ARPACK and ADM*TLM
2611    o start removing verification/vero/
2612    o update AD-related stuff
2613      (in particular some IF-statements in model/src/ routines)
2614    o adding to verification/global_ocean.90x40x15/ adjoint of
2615      vector invariant setup
2616    
2617    checkpoint51f_post
2618    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2619    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2620      of tracer Green's fucntions for ocean inversion project.
2621    
2622    checkpoint51f_pre
2623    o Added on-the-fly spatial interpolation capability
2624        "USE_EXF_INTERPOLATION" to pkg/exf.
2625      - This is a temporary Cartesian-grid hack until
2626        the super-duper ESMF coupler becomes available.
2627      - See verification/global_with_exf/README for usage example.
2628      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2629        flags and modified pkg/seaice accordingly.
2630    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2631        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2632        non-local transport term.
2633    
2634    checkpoint51e_post
2635    o pkg/mom_vecinv:
2636      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2637      - add time-ave diagnostic of vorticity advection.
2638    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2639    o atmospheric geopotential: - include water vapor effect;
2640                                - use p^kappa in p* scaling.
2641    o land pkg: read initial state from files.
2642    o AIM : add stratospheric drag in the upper level
2643    
2644    checkpoint51d_post
2645    o change function ILNBLNK (=> last non-blank char.) to return zero
2646      (instead of the string length) when the string. char is empty
2647    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2648    o modif's to restore TAMC compatibility
2649      - avoid "_d" constructs in PARAMETER declarations
2650      - avoid interrupting lines by comment lines
2651    o Use cluster local disks for purely local I/O
2652      vs. globally visible disks needed for ctrl stuff
2653      (merged from ecco-branch)
2654      - new active_file_loc... and mdsio_..._loc routines
2655      - affected packages: autodiff, ctrl, grdchk, mdsio
2656    
2657    checkpoint51c_post
2658    o introducing integer flag debugLevel
2659      - debLevZero: suppress all output
2660      - debLevA: standard
2661      - debLevB: equivalent to current debugMode=.TRUE.
2662    o introducing pathname variable mdsioLocalDir for mdsio
2663      that can be specified at runtime
2664      (relevant for cluster I/O to local disk)
2665    `
2666    >>>checkpoint51b_post
2667    adjoint of ptracers
2668    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2669    o extended state in checkpoint_lev?, etc.
2670    o alternative ctrl/cost with tr1 or ptracer
2671    o new comlev1_bibj_ptracers
2672    o new ptracers.flow
2673    o made ptracers_forcing same as external_forcing_s
2674    o added verification for adjoint with ptracers
2675      - adm. grdchk fail so far
2676      - tlm. grdchk OK
2677      - checked tapelev/comlev recomputations: OK
2678    <<<checkpoint51b_pre
2679    
2680    checkpoint51a_post
2681    o added code for biogeochemistry package
2682      - new pkgs: dic, gchem
2683      - new subroutine in ptracers
2684    o modify code for biogeo packages
2685      - in model/src and pkg/ptracers
2686    
2687    checkpoint51
2688    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2689      - autodiff, ctrl, exf, grdchk, seaice
2690      kept separate packages
2691      - cost, ecco, obcs
2692    o updating verification/internal_wave, verification/lab_sea
2693      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2694    
2695    checkpoint50i_post
2696    o Preparing next differentiable checkpoint and sync
2697      of MAIN vs. ecco-branch
2698      - 1st step: this one is differentiable
2699      - 2nd step: next(! not this) checkpoint will have updated packages
2700                  from ecco-branch)
2701    
2702    checkpoint50h_post
2703    o new package "land": provide surface BC for AIM.
2704    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2705    o AIM: use true log-P extrapolation for near surface temp (= as in
2706        F.Molteni paper) ; update aim.5l_cs output.
2707    o New variable in PARM03 for more flexible pickups
2708    o somewhat cleaned package initialisation sequence for
2709      ctrl/ cost/ ecco/ in packages_... routines
2710    
2711    checkpoint50g_post
2712    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2713      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2714      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2715        made the default because of faster convergence than ADI
2716    
2717    checkpoint50f_post
2718    o exf totally restructured
2719      - replaced all exf_set_ routines by one generic exf_set_gen.F
2720        and made sure it's still differentiable
2721      - split exf_getffields.F into new exf_bulkformulae.F
2722      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2723      - updated adjoint/makefile and relevant verif. accordingly
2724    
2725    checkpoint50f_pre
2726     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2727          + change Evap over land. (update aim.5l_cs output)
2728     o added missing .cvsignores and made uniform across expts
2729     o changed configuration of tidal_basin_2d expt
2730     o added pkg/debug functions for tracing code in fatal crashes
2731     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2732     o new fn in pkg/monitor to stop model if solution grows too big
2733     o removed lots of single quotes from comments
2734    
2735    checkpoint50e_post
2736    o make KPP work with PTRACERS
2737     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2738       nearly a copy of kpp_transport_s
2739     - there is no analogue to SurfaceTendencyS, so I have to use
2740       gPtr(of the surface layer) instead
2741    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2742    checkpoint50e_pre
2743    
2744    checkpoint50d_post
2745    o change kpp output from multiple-record state files to single-record state
2746      files analogous to write_state.F
2747    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2748      analogous to the cg2d-related output.
2749    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2750      so that writing to internal file fn (with length 512) fails.
2751    checkpoint50d_pre
2752    
2753    checkpoint50c_post
2754    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2755    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2756    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2757    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2758    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2759    
2760    checkpoint50c_pre
2761    Merging from release1_p13:
2762    o bug fix for pkg/seaice dynamic solver
2763    o Added SEAICE_initialHEFF to pkg/seaice
2764    
2765    checkpoint50b_post
2766    o store u*,v* in gU,V instead of in guNm1,gvNm1
2767    o in order to put the momForcing out of the Adams-Bashforth:
2768      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2769      to timestep.F
2770    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2771    o re-generate output for highly sensitive test-exp:
2772       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2773    
2774    checkpoint50b_pre
2775    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2776    o corrected CPP option mismatch in exf_Bulk... functions for case
2777      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2778    
2779    checkpoint50a_post
2780    o Bug fix for merging between c50 and KPP.
2781      ikey was passed from thermodynamics to kpp_calc via
2782      common block rather than being recomputed in kpp_calc,
2783      in contradiction with new key itdkey.
2784      New key ikppkey created, and tamc.h headers updated.
2785    
2786    checkpoint50
2787    - 2nd step of merge with ecco-branch:
2788      merge changes in ecco-branch back into main trunk
2789    - bug fix in find_alpha
2790    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2791    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2792    - merged some sliced AD support routines
2793    
2794    checkpoint49
2795    merged from ecco-branch:
2796    o exf:
2797      - Enable initialisation of forcing fields to constant
2798        (runtime) values.
2799      - in exf_getffields.F
2800        Reduce i-/j-loop to interior domain, discarding overlaps.
2801        That also fixes wrong TAF-key computations for key_1, key_2
2802        with bulf formulae.
2803      - exf_init.F modify #ifdef for exf_init_evap
2804      - exf_getffieldrec.F, ctrl_getrec.F
2805        The following INT-usages are not safe:
2806          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2807          fldcount = int(fldsecs/fldperiod) + 1
2808        and were modified.
2809    o autodiff: checkpoint_lev...
2810      - updated storing for bulk formulae (some arrays were missing)
2811      - added state for seaice package
2812      - synchronized with main branch
2813    o DIVA:
2814      Modif.s in
2815      - the_main_loop.F
2816      - the_model_main.F
2817      and added cost_final_restore.F cost_final_store.F
2818      o With these changes, it is possible to fully separate
2819        the first forward run to compute the cost function (mdthe_main_loop)
2820        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2821        into separate model executions.
2822        This enables better tuning of DIVA to given queue sizes.
2823      o Loss of cost function value in consecutive DIVA runs is
2824        fixed by storing to 'costfinal' file.
2825      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2826        beginning/end of adjoint integration is accounted for.
2827      The current changes apply to TAF-1.4.26.
2828      TAF has one remaining bug, requiring one manual change
2829      (see MITgcm manual).
2830    o cal: synchronized between MAIN and ecco-branch
2831    
2832    checkpoint48i_post
2833    o Changes to restore differentiability of code w.r.t. previous tag
2834      (mostly adding new routines to make list and replacing
2835      pressure by totPhiHyd).
2836    o Updated and merged grdchk package
2837      - has both ADM and TLM checks
2838      - works for single- and multi-proc.
2839      - output cleaned
2840      - worked successfully for parallel DIVA
2841    o genmake:
2842      - Adding -platform=SP4
2843      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2844    o Modif. for DIVA:
2845      ctrl_unpack should not be called in intermediate DIVA interval.
2846      (similar thing would apply for active files such as
2847      tbar, sbar, psbar, which should not be reinitialised;
2848      only relevant for ecco-branch)
2849    
2850    checkpoint48h_post
2851    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2852    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2853    o Added SEAICE_initialHEFF to pkg/seaice
2854    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2855    
2856    checkpoint48g_post
2857    --- EOS:
2858    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2859      store total Potential in totPhyHyd for diagnostics & EOS.
2860    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2861    --- Pressure/geopotential gradient:
2862    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2863    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2864      ( changes results of global_ocean_pressure )
2865    o NLFS + z-coord.: add eta*Rho' contribution.
2866    o accurate phiHyd when using interface-W at the middle between 2 centers
2867     ( changes results of ideal_2D_oce )
2868    o includes r* 2nd term in potential gradient.
2869    
2870    checkpoint48f_post
2871    Merging from release1_p12:
2872    o Modifications for using pkg/exf with pkg/seaice
2873      - improved description of the various forcing configurations
2874      - added basic radiation bulk formulae to pkg/exf
2875      - units/sign fix for evap computation in exf_getffields.F
2876      - updated verification/global_with_exf/results/output.txt
2877    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2878      (SBO) core products, including oceanic mass, center-of-mass,
2879      angular, and bottom pressure (see pkg/sbo/README.sbo).
2880    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2881      to avoid negative values in shallow regions.
2882      - updated verification/natl_box/results/output.txt
2883      - updated verification/lab_sea/results/output.txt
2884    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2885    o Added useSingleCpuIO option (see PARAMS.h).
2886    o Updated useSingleCpuIO option in mdsio_writefield.F to
2887      work with multi-field files, e.g., for single-file pickup.
2888    o pkg/seaice:
2889      - bug fix in growth.F: QNET for no shortwave case
2890      - added HeffFile for specifying initial sea-ice thickness
2891      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2892    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2893      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2894    o pkg/seaice:
2895      - adjoint-friendly modifications
2896      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2897    
2898    checkpoint48e_post
2899    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2900    o dynamics: change definition of computational domain & adapt mom_fluxform
2901      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2902    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2903        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2904        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2905        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2906        inverted_barometer solid-body.cs-32x32x1
2907      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2908    
2909    checkpoint48d_post
2910    o in preparation for r*:
2911     a) use pre-computed gradient of hydrostatic potential:
2912        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2913     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2914        => affects results of glob_oce_pressure (different truncation error)  
2915      update output.txt of ideal_2D_oce & global_ocean_pressure
2916    
2917    checkpoint48d_pre
2918    o in preparation for r*:
2919      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2920      pass the 2 comp. of the grad. as arguments to momentum S/R.
2921      but for the moment, only used if it does not change the results.
2922    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2923    
2924    checkpoint48c_post
2925    Modifications in treatment of initial flux forcing controls
2926    to avoid extra storing of flux fields.
2927    
2928    checkpoint48c_pre
2929    o Added tidal_basin_2d experiment (currently 1D!)
2930    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2931    
2932    checkpoint48b_post
2933    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2934     (modification to pressure gradient not yet implemented)
2935    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2936      (for U & V) that are used for vertical advection of momentum.
2937    
2938    checkpoint48a_post
2939    o In preparation for r*, use temp. array to compute vertical transport
2940       in flux-form momentum pkg. => change results of few test-exp.
2941      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2942                        lab_sea, natl_box & plume_on_slope
2943    
2944    checkpoint48
2945    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2946    
2947    checkpoint47j_post
2948    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2949    o moved adexch from forward_step to addummy_in_stepping
2950    o added exch in ctrl_map_...
2951    o aveFreq.=0. at end of cost_final to avoid overwrite in
2952      reverse checkpointing loop
2953    o Yet more changes in gmredi:
2954      * adgmredi_calc_tensor
2955        avoiding all recomputation of gmredi_slope_limit
2956      * adgmredi_x/y/rtransport
2957        added flag for excessive storing to avoid recomp. of
2958        u/v/rtans, dTdx/y/z
2959        -> this is not really necessary and very memory-consuming
2960      * adgmredi_slope_psi:
2961        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2962      * gmredi_slope_limit
2963        re-activated full calculation of taperfct for case 'ac02'
2964    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2965    
2966    checkpoint47i_post
2967    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2968    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2969      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2970    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2971    o gmredi: fix few bugs.
2972    
2973    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2974    This will be a good checkpoint to plug into the ecco-branch.
2975    o few modif.'s to get latest version adjointed
2976      (mainly kick out code in ini_linear_phisurf)
2977    o modif's to run adjoint with exactConserv
2978    o case GM_BOLUS_ADVEC should be cleaned
2979      S/R gmredi_slope_psi should be cleaned
2980    o verification/carbon now has exactConserv=.TRUE.
2981    
2982    checkpoint47g_post
2983    o time-average AIM output: becomes independent from statvars time-average
2984      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2985    o After TAF bug fix:
2986      Tested adjoint of gmredi package.
2987      Tests were done with checkpoint47 rather than with latest
2988      checkpoint47f_post since the latter is broken for the adjoint
2989      verification/carbon/ contains both ADM and TLM gradient checks.
2990    Here they are, before they get changed/lost/stolen.
2991    Mostly modif.'s to fix numerical sensitivities.
2992    Gradient checks OK for
2993    - GM_taper_scheme:
2994      * clipping
2995      * ac02
2996      * linear
2997      * glw91
2998      * dm95
2999      * ldd97
3000    - GMREDI_OPTIONS:
3001      * GM_VISBECK_VARIABLE_K
3002      * GM_NON_UNITY_DIAGONAL
3003      * GM_EXTRA_DIAGONAL
3004      * GM_BOLUS_ADVEC
3005    in conjunction with data.gmredi parameters to be checked in
3006    in a few minutes under verification/carbon/code/
3007    
3008    checkpoint47f_post
3009    Merging from release1_p10:
3010    o modifications for using pkg/exf with pkg/seaice
3011      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3012        and SEAICE_EXTERNAL_FLUXES
3013      - pkg/exf CPP options EXF_READ_EVAP and
3014        EXF_NO_BULK_COMPUTATIONS
3015      - usage examples are Experiments 8 and 9 in
3016        verification/lab_sea/README
3017      - verification/lab_sea default experiment now uses
3018        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3019    
3020    checkpoint47e_post
3021    o created a tag prior to creating a branch
3022    
3023    checkpoint47d_post
3024    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3025      at the bottom boundary had an erroneous half slip boundary condition
3026    o added bottom drag and no slip boundary condition capabilities to
3027      oceanic pressure coordinates code
3028    o added new verification experiment global_ocean_pressure, this experiment is
3029      also described in the tutorial section of the manual
3030    checkpoint47d_pre
3031    
3032    checkpoint47c_post
3033    o Added a verification experiment for a global cubed-sphere ocean run
3034      -  verification/global_ocean.cubed32x32x30
3035      -  uses pkg/therm_seaice and pkg/bulk_forcing
3036    
3037    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3038    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3039      when using P-coordinate; only implemented for atmospheric config.
3040    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3041      NOTES: requires option NONLIN_FRSURF to be "#define".
3042    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3043    
3044    checkpoint47b_post
3045    Merging from release1_p9:
3046    o pkg/seaice
3047      - removed GOTO's and added taf directives
3048      - double precision constants to reduce the g77 (Linux)
3049        to F77 (SGI) differences reported in release1_p8
3050    o tools/genmake
3051      - added SGI options
3052    o verification/testscript
3053      - updated to that of checkpoint47a_post
3054    o verification/global_ocean.90x40x15/input/eedata
3055      - modified for SGI f77 compatibility
3056    o verification/lab_sea
3057      - added description of sea-ice model
3058      - added missing matlab routines
3059      - added test of thermodynamics parallelization
3060    
3061    checkpoint47a_post
3062    o new pkg: aim_v23
3063     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3064       for now, keep the same surface forcing as before.
3065     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3066     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3067     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3068    o add diagnostic of surface correction term in monitor output
3069    
3070    o bulk_force and therm_seaice
3071    - Two packages:  bulk_force (Bulk forcing)
3072      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3073    - Earlier integration from Stephaine Dutkiewicz
3074      and Patrick Heimbach.
3075    - Two ifdef statements for compile time,
3076       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3077    
3078    checkpoint47
3079    differentiable version of checkpoint46n_post
3080    o bug fix in quasihydrostaticterms
3081    o * "clean" adjoint code (in terms of extensive recomputations)
3082        can now be obtained for all GMREDI options (i.e. for
3083        - GM_VISBECK_VARIABLE_K
3084        - GM_NON_UNITY_DIAGONAL
3085        - GM_EXTRA_DIAGONAL
3086        - GM_BOLUS_ADVEC )
3087      * However, wrong gradient check problem remains unsolved.
3088      * New CPP options have been introduced for different
3089        tapering schemes
3090    o external_fields_load now part of differentiation list
3091    o pressure needs multiple storing;
3092      would be nice to have store_pressure at beginning or
3093      end of forward_step, e.g. by having phiHyd global (5-dim.)
3094      (NB: pressure is needed for certain cases in find_rho,
3095      which is also invoked through convective_adjustment).
3096    o recomputations in find_rho for cases
3097     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3098    o #define ATMOSPHERIC_LOADING should be differentiable
3099    o ini_forcing shifted to begining of initialise_varia
3100    o Incorporating QNVS line search routines into MITgcm
3101      (this is separate code, and therefore not under pkg)
3102      lsopt/, optim/
3103    o Updated verification/carbon/
3104      - #define GM_VISBECK_VARIABLE_K
3105      - GM_taper_scheme    = 'ldd97'    
3106    
3107    checkpoint46n_post
3108    Merging from release1_p8:
3109    o verification/natl_box:
3110      updating new external_fields_load routine
3111    o New package: pkg/seaice
3112      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3113      The sea-ice code is based on Hibler (1979-1980).
3114      Two sea-ice dynamic solvers, ADI and LSR, are included.
3115      In addition to computing prognostic sea-ice variables and diagnosing
3116      the forcing/external data fields that drive the ocean model,
3117      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3118      The implied surface heat flux is then stored in variable
3119      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3120      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3121      non-local transport term.  Because this call precedes model
3122      thermodynamics, temperature under sea-ice may not be "exactly" at
3123      the freezing point by the time theta is dumped or time-averaged.
3124      N.B.: fairly large differences in accuracy occur across
3125            different platforms/compilers; comparison between
3126            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3127            generated output gives:
3128       T           S           U           V
3129      C D M    c        m  s        m  s        m  s        m  s
3130      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3131      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3132      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3133    
3134      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3135    o GAD:
3136      - generated new common blocks to account for call of
3137        same gad routines with differing traceridentities
3138        (needed to modify tracerIdentity indices in GAD.h)
3139      - generated separate common blocks for case useCubedSphereExchange
3140        (Department of Futurology)
3141      - parameter lists to gmredi_?transport: added tracerIdentity
3142      - added new key indices to tamc.h
3143    o external_fields_load:
3144      - added this routine to TAF list
3145      - needed to make some common blocks global and additional storing
3146        along the same lines as exf package (checkpoint_lev?_directives.h)
3147    o exf:
3148      updated external forcing package
3149      - bug fixes carried over from ecco-branch
3150        (missing OBCS_OPTIONS.h in two routines)
3151      - enable easy to use "no forcing".
3152      - added exf I/O for atmospheric loading
3153      - added exf I/O for runoff data
3154      - transfered scaling between exf <-> MITgcm to exf namelist
3155    o Adding new verification experiment global_with_exf.
3156      This verification experiment is almost identical to the
3157      global_ocean.90x40x15 experiment, except that it uses
3158      the exf (and cal) package instead of the
3159      external_fields_load routine (cf README file).
3160    
3161    checkpoint46m_post
3162    o modified testscript to return -- when there are no lines of "%MON" output
3163    o added new flag "quasiHydrostatic" for QH mode
3164      and new routine quasihydrostaticterms()
3165    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3166      New routine: mom_u_coriolis_nh()
3167    o fixed sign of non-hydrostatic metric terms in u and v equations.
3168      Depend on correct sign of gravitySign.
3169    o added work.pc* to .cvsignore in aim directories using ifc
3170    o introduced flag for controllin non-hydrostatic metric terms
3171    o removed gravitySign from PARM04
3172    o switched to g77/ifc from pgf77 in aim experiments
3173    
3174    checkpoint46l_post
3175    o made convective adjustment work with pressure coordinates:
3176     - changed the direction of k-loop in convective_adjustment.F for the
3177       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3178     - adjusted the reference pressure k-index in convective_adjustment.F
3179     - adjusted the convection condition in convect.F (in analogy to
3180       calc_ivdc.F)
3181     - convective_adjustment no longer computes anything on the halos
3182     - removed the warnings about negative salinity from find_rho.F and
3183       find_alpha.F; instead the new routine look_for_neg_salinity, called
3184       at the beginning of find_rho, find_alpha, and find_beta, does a
3185       check of the entire slice, if CPP-option
3186       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3187    checkpoint46l_pre
3188    
3189    checkpoint46k_post
3190    o fixed the verification/global_ocean.90x40x15 experiment:
3191     - new bathymetry (the world according to A., JMC, and M.)
3192     - new initial fields and forcing fields (*.bin files)
3193     - new POLY3.COEFFS (for the next release one should switch to a full
3194       equation of state: JMD95P or MDJWF)
3195     - fixed several errors and redundancies in the data file
3196     - experiment uses looped cells
3197     - added matlab directory with diagnostic scripts for plotting of output
3198    
3199    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3200     - read AIM physics parameters from a file (data.aimphys)
3201     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3202    
3203    checkpoint46j_post
3204    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3205    o move wVel computation at the end of the time step, in S/R integr_continuity
3206    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3207    o update timeave pkg for wVel diagnostic.
3208    checkpoint46j_pre
3209    
3210    checkpoint46i_post
3211    o Clean up AIM package (and keep the results unchanged):
3212      include CPP_OPTION and use IMPLICT NONE in all routines ;
3213      declare all the variables _RL ; use _d 0 for all numerical constants.
3214      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3215    
3216    checkpoint46h_post
3217    o cleaned up the use of rhoNil and rhoConst.
3218      - rhoNil should only appear in the LINEAR equation of state, everywhere
3219        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3220        and the dynamical equations are all divided by rhoConst
3221    o introduced new parameter rhoConstFresh, a reference density of fresh
3222      water, to remove the fresh water flux's dependence on rhoNil. The default
3223      value is 999.8 kg/m^3
3224    o cleanup up external_forcing.F and external_forcing_surf.F
3225      - can now be used by both OCEANIC and OCEANICP
3226    checkpoint46h_pre
3227    
3228     Added code to convert surface volume flux (fresh water) into
3229     a mass flux when using P coordinates in the ocean (OCEANICP).
3230     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3231    
3232    checkpoint46g_post
3233    o Include a new diagnostic variable phiHydLow for the ocean model
3234      - in z-coordinates, it is the bottom pressure anomaly
3235      - in p-coordinates, it is the sea surface elevation
3236      - in both cases, these variable have global drift, reflecting the mass
3237        drift in z-coordinates and the volume drift in p-coordinates
3238      - included time averaging for phiHydLow, be aware of the drift!
3239    o depth-dependent computation of Bo_surf for pressure coordinates
3240      in the ocean (buoyancyRelation='OCEANICP')
3241      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3242        Theta, Salinity, and Pressure in the parameter list. This routine is
3243        presently contained in find_rho.F. This routine does not give the
3244        correct density for 'POLY3', which would be a z-dependent reference
3245        density.
3246    o cleaned up find_rho
3247      - removed obsolete 'eqn' from the parameter list.
3248    o added two new verification experiments: gop and goz
3249      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3250    checkpoint46g_pre
3251    
3252    checkpoint46f_post
3253    o Enable tangent linear (forward mode) gradient checks:
3254      - extended active file handling to g_... files
3255      - added TANGENT_SIMULATION to theSimulationMode
3256      - extended grdchk package accordingly
3257    o added tangent linear setup in verification/carbon/code_ftl
3258    o added adjoint setup in verification/front_relax/code_ad
3259    
3260    checkpoint46e_post
3261    o Added new equation of state -> MDJWF
3262      - EOS of McDougall et al., 2002, JAOT, submitted
3263      - caveat: the equation of state is only valid for a smaller (more
3264        realistic?) range of values than JMD95P/Z and UNESCO
3265      - added masks to the calculation of pressure in store_pressure
3266      - added more check values for density in check_eos (ini_eos.F), some of
3267        the old check values are out of the range of the MDJWF-eos, so don't
3268        expect perfect matches for those
3269    checkpoint46e_pre
3270    
3271    checkpoint46d_post
3272    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3273      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3274      case of pressure coordinates. eosType='JMD95Z' in
3275      combination with buoyancyRelation='OCEANICP' now causes an error.
3276    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3277      in find_alpha/beta.
3278    checkpoint46d_pre
3279    
3280    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3281      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3282    
3283    checkpoint46c_post
3284    o Changes necessary for ocean in p-coordinates
3285     -  Added new buoyancy relation = 'OCEANICP'
3286     -  Added new parameters = gravitySign (this used to be contained inside
3287        the factor dRdZ which I added when we first switched to R coordinates).
3288     X GM/Redi is not compatible (yet)
3289     X bottom drag and no-slip need to be debugged.
3290    checkpoint46c_pre
3291    
3292    checkpoint46b_post
3293    o Added new equation of state -> JMD95Z and JMD95P
3294      - EOS of Jackett and McDougall, 1995, JAOT
3295      - moved all EOS parameters into EOS.h
3296      - new routines ini_eos.F, store_pressure.F
3297    o Added UNESCO EOS, but not recommended because it requires
3298      in-situ temperature (see JMD95)
3299    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3300      unesco.f to be used with POLY3
3301    checkpoint46b_pre
3302    
3303    checkpoint46a_post
3304    o Added (atmospheric) pressure loading
3305      - new field in FFIELDS.h, etc...
3306      - new cpp flag ATMOSPHERIC_LOADING
3307    o Changed hFacC to _hFacC in calc_phi_hyd.F
3308    o Added SHORTWAVE_HEATING to some files for consistency
3309    checkpoint46a_pre
3310    
3311    checkpoint46
3312    further merges from release1_p5
3313    o new ctrl package
3314      - adopted from ECCO environment to enable optimization
3315      - added Eliassen Palm fluxes to controls
3316    o added Eliassen Palm flux controls to gradient check package
3317    o cost package
3318      - Compatible with new ctrl package
3319      - added Eliassen Palm cost hooks
3320      - modif's of existing cost functions
3321    o Adjoint-related bug fixes in kpp:
3322      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3323      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3324    o autodiff package
3325      - flow directives:
3326        + new for S/R do_the_model_io
3327        + enhanced for S/R checkpoint
3328        + new gmredi.flow
3329      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3330        disable adcommon.h/g_common.h by default.
3331      - fixed problem for adjoint of global_max
3332    o modified verification/carbon/
3333    o New setup for adjoint of global_ocean
3334    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3335    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3336    o incorporated hooks for sponge layer code (external_forcing.F)
3337    
3338    checkpoint45d_post
3339    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3340    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3341      (affects plume_on_slope "cg2d" output)
3342    o add new parameter deltaTfreesurf for free-surface time stepping
3343    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3344    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3345    o change phiMin in exp1 (to agree with documentation)
3346    o add new flags:
3347     - T,S forcing inside/outside Adams-Bashforth
3348     - turn off temp,salt advection and/or forcing
3349     - for each tracer, define internal flag for multiDimAdvection & A-B
3350    o monitor: change definition of KE to check conservation of Energy
3351    
3352    checkpoint45c_post
3353    o Removed f90 comments ("!")
3354    o Modified initialisations to enable exf package for MITgcm
3355      (without invoking ECCO_PACKAGE).
3356    o modifications to gradient check package (Martin Losch)
3357      - enable centered differences
3358      - modified format of standard output
3359    
3360    checkpoint45b_post
3361    o cleaned exchange calls in cg2d
3362    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3363    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3364      to configure barotropic setup (Martin Losch)
3365    o moved some initialisations within bi,bj loop in dynamics
3366      (TAF flow dependency)
3367    o in initialise_varia, moved call packages_init_variables
3368      before convective_adjustment_init
3369      (corresponding adjustment of TAF tape initialisation).
3370    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3371    
3372    checkpoint45a_post
3373    o compute Rho over the whole domain (extend iMin,jMin indices)
3374    o specific exchange for X-slice domain (case Ny=1)
3375    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3376    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3377    
3378    checkpoint44h_post = checkpoint45
3379    o Fix to restore differentiability:
3380      place at which packages_init_variables is called in
3381      initialise_varia is crucial for reverse control flow.
3382    o modifications in GMRedi to enable stable adjoint
3383      (corresponding modif's in thermodynamics, dynamics)
3384    o added missing hook for sponge layer code in external_forcing
3385    o modified test cost functions
3386    o storing in gad_advection (plus removal of write(0,*)!
3387    o missing headers TR1.h added in convective_adjustment routines
3388    o errorMessageUnit set non-equal zero in eeboot
3389      (conflict on some platforms, e.g. IBM SP3)
3390    o modified carbon verif.
3391    
3392    checkpoint44h_pre
3393    o vertical grid option: allow to put the Interface at the middle between
3394      2 cell-centers ; replace delZ in pkg/kpp by drF.
3395    o GM Advective form: Tracers are advected using the residual transport (=
3396      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3397    
3398    checkpoint44g_post
3399    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3400      results) ; ifdef missing in thermodynamics.F
3401    
3402    checkpoint44f_pre,checkpoint44f_post
3403    o added PTRACERS package
3404      This allows an arbitrary number of passive tracers to be integrated
3405      forward simultaneously with the dynamicaly model.
3406      + Implemented so far:
3407        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3408        - I/O and checkpointing
3409        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3410      + Not implemented so far:
3411        - KPP
3412        - OBCS
3413      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3414        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3415        line in data.pkg.
3416      + This package is disabled by default since it increases storage.
3417    
3418    
3419    o testscript: added -cleanup option
3420    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3421                 b) enable to filter 2D fields.
3422    
3423    checkpoint44e_pre,post
3424    o re-wrote convective adjustment to use pre-calculated weights
3425      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3426      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3427      Original calls to convect() still in place.
3428    
3429    chkpt44d_pre,post
3430    o added missing EXCLUDE_MONITOR flags
3431    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3432      (incompatible typ in MIN/MAX expressions caused problems
3433      on IBM SP3)
3434    o in genmake added variable MAKEDEPEND
3435      plus resetting for case SunOS
3436    o added timer_stats.c routine for IBM SP3
3437    o removed variables in dynamics
3438    !!! I forgot to create tag chkpt44d_pre !!!
3439    !!! But chkpt44d_pre = chkpt44c_post    !!!
3440    
3441    o real fresh water flux implemented with non-linear free-surface.
3442    
3443    chkpt44c_pre,post
3444    o few fix (mask in shap_s2, EmPmR in external_field_load,
3445      USE_NATURAL_BCS in solve_for_P);
3446    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3447    
3448    checkpoint44b_pre/_post
3449    o merge of relevant stuff from the ecco-branch:
3450      - genmake: removed $S64 overwrite for case SunOS
3451      - pkg/exf: update and corrections for field swapping and obcs
3452      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3453                  harmonized between ECCO and MITgcm
3454      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3455                      updated checkpointing_lev... lists for obcs
3456      - model/src: minor changes in forward_step, plot_field
3457                   added directive for divided adjoint in the_main_loop
3458      - pkg/mdsio: added mdsio_gl_slice
3459    
3460    o check parameters & config (chkpt44a_pre,post)
3461    o OBC and NonLin_FrSurf.
3462    
3463    checkpoint44
3464    o fix bug in mom_vi_del2uv
3465    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3466    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3467    o update AIM experiments (NCEP input files)
3468    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3469    o added some stuff for AD
3470    
3471    checkpoint43
3472    o added two new advection tests
3473    o added global 4x4 degree ocean test
3474    o added test of H&S94 with free surface on cube
3475    o some final mods for gradient check, adjoint,...
3476    
3477    checkpoint42
3478      Fixed AD-related problems:
3479    o Store directives up-to-date with re-arranged Adams-Bashforth
3480      (mainly thermodynamics.F)
3481    o New store directives for multi-dim. advection schemes
3482      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3483      * new common block and key passkey
3484      (mainly gad_advection.F)
3485    o Modified store directives for split of dynamics/thermodynamics
3486      for the case ALLOW_KPP
3487    o Cleaned argument list for timestep_tracer.F
3488    
3489    checkpoint41
3490    o re-formatted/added comments in prologues of key subroutines
3491      to work with protex
3492    
3493    checkpoint40
3494    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3495    o added FLT (floats) package from Arne along with demo. experiment
3496    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3497      implementation of forward-in-time forcing terms
3498    o more mods for non-linear free-surface including new variable
3499    o modified multi-dim method to work on cube
3500    o bug fix in KPP (from DM)
3501    
3502    checkpoint40pre9
3503    o added DST advection schemes
3504    o fix MPI bug on SGI's
3505    o modifications for non-linear free-surface
3506    o fixed conditionals for fixed flow/passive tracer only mode
3507    o added tension/strain form of stress tensor
3508    o changes to commenting of arguments for TAF/TAMC
3509    o added/updated many matlab scripts
3510    o added multi-dimensional advection method for tracers
3511      
3512    checkpoint40pre8
3513    o new package rw/
3514      Added method for dumping intermediate local arrays:
3515      mdsio_writetile - same as mdsio_writefield except works from inside
3516                        bi,bj loop
3517      mdsio_writelocal - same as mdsio_writetile except works for local
3518                         arrays
3519      write_local_r? - higher-level wrapper for mdsio_writelocal
3520      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3521      Example given at end of mom_vecinv.F that dumps some local arrays.
3522    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3523      control flux-form versus vector invariant code.
3524      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3525      or genmake -DISABLE ...
3526    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3527      (additional storing is now needed for case vecinv;
3528      currently nothing implemented to switch this storing off
3529      in case fluxform is used since no CPP flag available).
3530    
3531    checkpoint40pre7
3532    o bug fix in dynamics.F
3533      calc_viscosity called before k=1,Nr loop.
3534    o added some #ifdef's ALLOW_PASSIVE_TRACER
3535    o cleaned initialisations in ctrl_map_ini
3536      related to TAF
3537    
3538    checkpoint40pre6
3539    o split dynamics into thermodynamics & dynamics
3540    o corresponding split of calc_diffusivity into
3541      calc_diffusivity, calc_viscosity
3542      (kpp_calc_diff, kpp_calc_visc).
3543    o Added diffkr, kapgm to control variables
3544    o bug fix in gmredi_slope_limit for ldd97
3545    
3546    checkpoint40pre5
3547    o proper initialization of Adams-Bashforth time stepping
3548      + uses forward step for very first step of model (iter=0)
3549    o re-generated *all* output since almost all output is modified by this
3550      change (sorry but we've been putting this one off for about 2 years)
3551      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3552        *not* regenerated since they are already out of date and I don't
3553        want to create the impression that they are suddenly working.
3554    o removed KAP stuff for DEC's
3555    o modified/added many .cvsignore files in */code and */input
3556    o added new expt "solid-body.cs-32x32x1"
3557      + this uses an alternative form of ini_curvilinear_grid.F which
3558        is not necessarily any better than the current one...
3559    
3560    checkpoint40pre4
3561    o added re-initialisations of utrans,vtrans,rtrans in
3562      calc_common_factors which are crucial for TAF.
3563    o extended iMin,jMin range for calc_common_factors,
3564      calc_diffusivity
3565    o added option ALLOW_PASSIVE_TRACER
3566    o a few minor updates and fixes
3567    
3568    checkpoint40pre3
3569    o created calc_gtr1.F for gad package
3570    o split the_main_loop and re-introduced forward_step
3571    o some recomputations of nIter0 for TAMC
3572    
3573    checkpoint40pre2
3574    o Updated to latest branch of AJA, JMC
3575    o Added gradient check package
3576    o Added routines for passive tracer handling
3577    o Added carbon sequestration sensitivity experiment
3578    
3579    checkpoint39
3580     o Modifications and fixes to support TAMC
3581       (mainly missing or wrong directives)
3582     o Corrected common blocks when fooling TAMC to produce adjoint I/O
3583       in addummy_in_stepping
3584     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
3585     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
3586     o Included following packages:
3587       cal: calendar
3588       exf: external forcing
3589       ecco: essential routines to control use of cal, exf
3590             (NB: this is not the full ECCO environment)
3591     o disabled some packages by default in genmake
3592    
3593    checkpoint38
3594     o see notes_c37_adj.txt
3595     o corrected wrong layer index in external_forcing_t
3596     o replaced the_main_loop/forward_step by the_main_loop
3597     o removed forceoutput from write_state
3598       (replaced criteria for initial/final state)
3599     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
3600    
3601    checkpoint37
3602     o mdsio.F routine split and packaged in pkg/mdsio
3603       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
3604        used unless genmake -disable=mdsio)
3605     o allow a more precise surface-geopotential gradient for the atmosphere
3606       taking into account the change in space of Alpha (=1/rho) at the surface.
3607     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
3608       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
3609     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
3610       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
3611       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
3612     o Time-Average diagnostics defined as a pseudo package "timeave".
3613     o pickup files : old pickup (before c35) did not work with new code (c35
3614       and after) unless activating 2 commented lines in initialise-varia.
3615     o Non-Hydrostatic pickup file Pb fixed.
3616     o bug with Rigid-lid version (since c35) fixed.  
3617    
3618    checkpoint36
3619     o implement Crank-Nickelson barotropic time-stepping
3620     o recover Time-Average diagnostics
3621     o fix Pb in checkpoint (PR#19)
3622     o AIM become a standard package ; clean unused CPP_kees
3623    
3624    checkpoint35
3625     o subtantial rewrite of dynamics.f
3626     o allows staggered time-stepping
3627     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
3628     o added bottom drag (linear + quadratic)
3629    
3630    checkpoint34
3631     o Modified exchange routines for correct reverse simulation.
3632     o Added verification output to comply with bug fix in impldiff.F
3633       as of c33 (exp2, natl_box).
3634     o Corrected store directives in dynamics.F
3635     o Corrected array boundaries in impldiff.F
3636     o Corrected array dimensions in gmredi.
3637       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
3638     o Added routine GLOBAL_SUM_INT to global_sum.F
3639     o Added mdsio_gl.F for ECCO purposes.
3640    
3641  checkpoint33  checkpoint33
3642   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
3643   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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