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revision 1.76 by jmc, Fri Jul 12 14:52:08 2002 UTC revision 1.957 by mlosch, Wed Feb 13 07:43:39 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 genmake2: replace (4 times)
8         make genmake_tc_1.o >> genmake_warnings 2>&1
9      with
10         COMM="$CC $CFLAGS -c genmake_tc_1.c"
11         echo $COMM >> genmake_warnings
12         $COMM >> genmake_warnings 2>&1
13      to make genmake2 always see the value of CC as specified in the optfile.
14    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
15      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
16      - modify verification advect_cs test to test SOM-advection on CS-grid.
17    o pkg/ctrl:
18      - Rewrite of ctrl_map_ini_ecco.F,
19        introducing a generic routine (ctrl_map_ini_gen.F).
20      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
21    
22    checkpoint59n
23    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
24      number in dedicate array "hdiag":
25      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
26        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
27      - many small changes (integer format) for large number of diagnostics
28      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
29        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
30    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
31      usingSphericalGrid, this allows to define the rotated grid coordinates
32      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
33      geographical coordinates according to the inverse of the rotation defined
34      by the Euler angles, so that Coriolis parameter and online-interpolation by
35      exf works with the geographical coordinates on XC/YC/XG/YG.
36      Naturally, this feature does not work with all packages, so some
37      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
38      profiles), because there the coordinates are assumed to be regular
39      spherical grid coordinates.
40    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
41      - introduce isopycnal diffusion coefficient control.
42    o tools/adjoint_options:
43      - additional control vector components.
44    o pkg/mnc: have mnc create marginally meaning full coordinate variables
45      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
46    o pkg/mypackage:
47      - add example of read/write pickup for state-var ;
48      - add entry points to the main code for state-vars diags & write-pickup.
49    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
50      transitions for useExfYearlyFields
51      - add new subroutine that determines the file to read from for
52        use*YearlyFields = .TRUE. and .FALSE.
53      - add a verification experiment to global_with_exf that tests
54        useExfYearlyFields with USE_EXF_INTERPOLATION defined
55    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
56      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
57      subroutines (which could be generated from a template, because they are
58      almost identical), for now they are included in obcs_prescribe_read.F for
59      simplicity
60    o pkg/exf:
61      - add a little more diagnostic to exf_interp_read (in analogy to
62        mds_read_field, can be turned off with debugLevel < debugLevA=1)
63      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
64        ugly but fast by unrolling short inner loops, inserting a unroll=8
65        directive in routine lagran, and splitting a loop and making do while the
66        outermost loop (the latter requires the intoduction of index arrays)
67    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
68    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
69      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
70    o verification/seaice_obcs: updated for restart test and latest options
71    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
72      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
73      for now this is only available for the C-grid code and also within
74      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
75    
76    checkpoint59m
77    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
78      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
79    o gad_som : fix flux output (& diagnostics) to have same units as other  
80      advection scheme fluxes (was previously multiplied by deltaT).  
81    o added verification/seaice_obcs both to test seaice open boundaries
82      and to provide an example matlab scrpt for generating them
83    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
84    o pkg/salt_plume: clean up salt_plume_frac.F to
85      remove redundancy in PlumeMethod 1 and 4
86    o pkg/kpp: added saltplume diagnostics
87    o pkg/obcs and pkg/seaice:
88      - do not set uice and vice to zero when OB*icefile are unspecified
89      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
90      - moved seaice tracer obcs after call to seaice_growth
91    o pkg/salt_plume: added various options for salt plume depth
92      criterion and for vertical distribution of the salt
93    
94    checkpoint59l
95    o pkg/ptracers: new version of ptracers pickup:
96      read meta file and write only fields which are needed to restart.
97      ( same logic as main pickup file ; also using pickupStrictlyMatch )
98    o pkg/seaice:
99      - add timescale for melting due to warm mixed layer as a means of
100        setting SEAICE_availHeatFrac more conveniently
101      - add a CPP-flag/runtime parameter check for flooding algorithm
102      - reformulated availHeat in seaice_growth.F to be independent of AREA
103    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
104      unit changes
105    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
106    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
107      SX vector computer.
108    o pkg/seaice:
109      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
110        seaice forcing fields can now be read only through pkg/exf
111      - removed some unused halos
112    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
113    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
114      or U/VICE from U/VWIND before computing U/VSTRESS
115    
116    checkpoint59k
117    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
118      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
119    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
120      all experiments pass when compile with un-initialised var. checking option.
121    o added pkg/salt_plume
122    o script to test restart (for now, in MITgcm_contrib/jmc_script)
123    o pkg/seaice: new read/write pickup version.
124      read meta file and write only fields which are needed to restart.
125      ( same logic as main pickup file ; also using pickupStrictlyMatch )
126    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
127    o lab_sea.hb87: modify the domain & update output.hb87.txt :
128      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
129      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
130      process. Fixed here by closing the domain at the Northern boundary.
131    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
132    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
133      a set of consecutive levels in/from a 3-D array.
134    o pkg/ptracers:
135      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
136      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
137    
138    checkpoint59j
139    o in pkgs: dic, obcs, offline, rbcs:
140      standard way to compute coeff. for time interpolation between 2 time reccords
141      which retains full precision (& make results less dependent on compiler).
142      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
143    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
144      packages instead of reading ice cover and wind speed separately
145    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
146     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
147      to allow to compile customized code before the update)
148    o cleaning-up:
149      - fix CPP instruction syntax in pkg/obcs
150      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
151        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
152      - fix some threads issue in IO parts.
153    o pkg/dic:
154      - add tons of "_d 0" (--> much better testreports !)
155       and then update outputs of tutorial_global_oce_biogeo
156    o pkg/mom_fluxform:
157      add a special version of momentum advection intended to conserve momentum
158      next to a bathymetry step or a coastline edge. (default = off = #undef)
159    o new read/write pickup version:
160      - for now, only implemented for main (mdsio) pickup file.
161      - write out only what is needed to restart; merge pickup_nh , pickup_ph
162        and main pickup together.
163      - read meta file; read only what is needed to restart; stop if a field
164        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
165        if it make sense (even if the restart is not perfect).
166      - if no meta file, assume that pickup to read corresponds exactly to
167        a pickup that would currently be written.
168      - read pickup written in the old format (until checkpoint59i) if it
169        recognizes an old meta file (no field-list).
170      - add a meta file in exp. which starts from a pickup: 2 cases:
171        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
172         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
173        b) a meta file describing the content of the associated pickup file
174         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
175    o pkg/mdsio & pkg/rw:
176      - new routine to read a meta file ; new set of routine to read
177        Multiple-fields file (with meta file).
178    o added open boundary conditions capability for seaice
179        HSNOW, HSALT, UICE, and VICE
180    
181    checkpoint59i
182    o adjoint:
183      * fix multiDimAdvection adjoint
184        (partial recomputation problem by TAF for fVerT(:,:,kDown)
185        and comlev1 size definition (maxpass vs. max. number of tracers)
186      * verification/global_ocean.90x45x15 adjoint now tests
187        NLFS and multiDimAdvection using DST3 (=30)
188      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
189    o pkg/kpp: add "_d 0" to real constant (if missing);
190      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
191      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
192    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
193      for internal parameters related to restart process (formerly from PARAMS.h)
194      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
195    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
196      as argument. (only atm2d & obcs write_pickup have not yet been updated)
197    o pkg/monitor:
198      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
199      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
200      - account for deep Atmosphere factor and density factor (anelastic)
201    o added open boundary conditions capability for seaice HEFF and AREA
202    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
203      thermodynamics
204      - requires a little reorganization, which affects the testreport results
205        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
206        so that now the conservative form is tested
207      - add a few comments
208    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
209    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
210    o add new diagnostics to seaice: advective, diffusive fluxes (only for
211      multidim-advection, for scheme 2 they are not filled) and transports,
212      thermodynamic growth rates
213    o change units of EmPmR (inside the code, + within coupling interface)
214      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
215      Affects results @ truncation level (cg2d match) and update output of
216       experiments: lab_sea(6), global_ocean.90x40x15(10),
217      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
218      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
219      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
220      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
221    
222    checkpoint59h
223    o pkg/exf:
224      - improve vectorization by moving if-statement out of loops in
225        exf_mapfields, exf_radiation
226      - exf_bulkformulae.F: introduce 2D fields and vectorize code
227    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
228    o testreport:
229      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
230        monitor & update offline_exf_seaice exp. output.
231      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
232    o pkg/seaice:
233      - bug fix in the evp solver: boundary conditions were affected be
234        masking of zMax/zMin (changes results)
235      - minor bug fix in boundary conditions in seaice_calc_strainrates
236        (changes results for no_slip)
237      - seaice_lsr.F: make interpolation of eta dependent on boundaries
238      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
239      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
240        stress formulation and no-slip boundary conditions
241    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
242      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
243    o pkg/seaice: a first HSALT time stepping equation has been checked in
244    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
245      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
246      without requiring DO-IF statements
247    o pkg/thsice:
248      use continuous power-law function for partition of energy between lateral
249      melting/freezing and thinning/thickening ; old code using step function
250      still available with #undef THSICE_FRACEN_POWERLAW
251      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
252    o testreport: change AD testing : check against results/output_adm.txt
253      using same scripts as for forward test.
254    
255    checkpoint59g
256    o adjoint testing: in preparation for changing testreport:
257      - output format: cost and grad written on separated lines
258      - ad output results in directory "results" (instead of "results_ad")
259    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
260    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
261    o pkg/ecco: allow user defined cost function contributions
262    o testreport:
263      Allow to choose (per experiment) the list of tested output variables
264       and the main variable (used to issue a pass/FAIL ) ;
265      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
266      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
267      Also modify printing of summary:
268       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
269       b) echo the list of tested variables in the individual summary.txt of
270          each experiment.
271    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
272      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
273      (but still depend on the tile decompostion of the domain).
274    o pkg/seaice: change a discretization detail to make the B-grid code
275      "more symmetric". This change is likely to remove all "ridges/leads" that
276      where quasi-aligned with the grid in B-grid solutions. It may also be
277      the solution to the stress coupling issues with the B-grid.
278    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
279      remove .cvsignore from input dir. (since testreport no longer run here).
280    o pkg/thsice:
281     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
282     - fix reshaping of sea-ice just after advection:
283       melt all the ice only if ice-volume is too small.
284     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
285       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
286     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
287    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
288      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
289    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
290      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
291      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
292      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
293      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
294      -> update output.txt
295    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
296     this affects truncation error: -> update output.txt of exp:
297      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
298      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
299    
300    checkpoint59f
301    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
302    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
303      a bounded range (in forward mode)
304    o pkg/ecco, ctrl, autodiff and mom_common:
305     internal parameter controls, completements of implementations
306    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
307    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
308      (not seem any difference in testing results).
309    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
310       at face corners.
311    o pkg/generic_advdiff:
312     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
313      loop range indices for computing vertical advection tendency
314      and do the calculation in the interior only (no overlap) ;
315      for now, only implemented for SOM advection (to save CPU time).
316     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
317    o exch2 adjoint
318      First set of changes:
319      - add exch2 hand-written adjoint templates
320      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
321        This will require cleanup in pkg/autodiff/*.F
322        (changed routines currently kept separate in verif. code/)
323      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
324        that used to hide exch2 or cubed-sphere specific code
325        (commented via 'cph-exch2')
326    o pkg/seaice
327      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
328    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
329       output of global_ocean.cs32x15.thsice .
330    
331    checkpoint59e
332    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
333      for B-grid vector (not yet tested) and C-grid vector (<- only used
334      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
335    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
336      (#ifdef ALLOW_SALT_PLUME)
337    o gather_2d/scatter_2d: removed halo regions
338    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
339      scheme and the corresponding test case (under front_relax dir). For now,
340      only available with Skew-flux form and not yet tested in realistic set-up.
341      adjoint: store directives updated, but gradient checks deteriorated,
342      so maybe GM/Redi adjoint is now broken.
343    o seaice adjoint
344      * add AREA, HEFF, HSNOW as control variable
345        (should not change lab_sea results)
346      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
347    o pkg/seaice:
348      * added computation of saltFlux in seaice_growth;
349        For time being, sea ice salinity is assumed constant
350        contribution of snow flooding to freshening of sea ice is neglected.
351        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
352        defaults to 0.0 in order to maintain backward compatibility.
353        Typical values for SEAICE_salinity are 4 to 10 g/kg.
354      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
355      * added SEAICE_availHeatFrac, which specifies fraction of surface level
356        heat content used to melt or grow ice
357      * commented out cap of HICE: it helps keep ice thinner
358      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
359      * applied OBCS T/S mask to HEFFM sea ice mask
360    
361    checkpoint59d
362    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
363     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
364     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
365    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
366     and change default value of parameter "GM_Small_Number";
367     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
368       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
369       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
370    o pkg/ecco: cost function when applying pkg/smooth to controls
371    o pkg/ctrl: add forcingPrecond run time parameter
372    o pkg/seaice:
373     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
374     - fix bug in metric terms of u-equation in LSR solver (implicit part),
375       changes verification/lab_sea
376     - rearrange implicit part of u-equation in LSR solver to make it easier to
377       read, understand, and debug. This causes changes at the truncation level.
378     - fix (serious) bug in the boundary conditions (sign error in the implicit
379       part) of the LSR solver. Changes all LSR results.
380     - fixed problem with HSNOW initialization to avoid thick snow when AREA
381       is initilized with small values - does not change lab_sea results.
382     - added HsnowFile initialization capability
383    o pkg/smooth: addition to model/src and pkg/ctrl so allow
384     initialization of pkg/smooth and application to control vector
385    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
386    o dependencies: pkg/profiles requires pkg/cal
387    o pkg/profiles:
388     - added option ALLOW_PROFILES_GENERICGRID
389         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
390         that interpolation information (grid points and coefficients) is provided
391         within the netcdf input files.
392         -> sample matlab scripts can be found in MITgcm_contrib/gael
393         that allow you to prepare netcdf input files.
394     - also modified: cleaner include statements, cleaner error print statements,
395       cleaner stops when error, and more tests of the netcdf input files consistency.
396    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
397    o pkg/seaice:
398     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
399       requires a new routine: seaice_diagnostics_fill.F
400     - make sure that seaice does not move if not forced (pressure replacement
401       method, Hibler and Ip, 1995), changes results
402     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
403     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
404       It is turned off by default (=-1.), because it changes the results.
405     - make it possible to read AREA from a file, too.
406    
407    checkpoint59c
408    o add S/R and diagnostics for oceanic mixed-layer depth
409    o move GMRedi call after all vertical mixing schemes (including KPP)
410    o pkg/thsice:
411     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
412      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
413    o pkg/obcs:
414     - bug fix for balance code
415    o pkg/seaice:
416      - allow values of SEAICE_elasticParm > 1
417      - add new parameter SEAICE_evpTauRelax as an alternative
418        to SEAICE_elasticParm
419      - make lsr boundary conditions free slip (by default), changes result
420      - add code for no slip boundary conditions for lsr
421      - set minimum of zeta to zero (and not 4e8) (changes results)
422      - add a cap on AREA after advecting AREA if seaice_growth is not called
423    o change calculation of Visbeck K:
424      - no longer depend on tapering scheme; instead, compute slope (limited
425        by GM_maxSlope). this is equivalent to what was comuted before with
426        clipping or linear tappering.
427      - fix vertical averaging (wrong by 1/2 level)
428      - leave the old version (but will not be maintained) within
429        #ifdef OLD_VISBECK_CALC / #endif
430      - update output of exp. ideal_2D_oce
431    o change error catch in calc_r_star to improve vectorization
432    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
433      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
434    o adjoint:
435      Re-organized adjoint checkpointing according to Matt Mazloff
436      (but with modifs/completions/cleanups)
437      Storing is now bundled into large arrays to optimized I/O
438      (and second step in cleanup of the_main_loop)
439    
440    checkpoint59b
441    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
442      - export/import (between ocean & coupler) fields needed for ocean DIC.
443    o pkg/seaice:
444      - get rid of three more exchanges seaice_calc_viscosities (required
445        different loop boundaries in seaice_lsr and seaice_ocean_stress)
446      - bug fix in seaice_ocean_stress (update of lab_sea required)
447      - reduce loop boundaries to necessary minimum also in seaice_evp
448      - go back to the old way of computing deltaC/Z as the adjoint likes that
449        better
450    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
451      passive tracer to an Age Tracer) + update output.txt
452    o pkg/exf:
453      - implement A-grid / C-grid selection for wind-stress input files.
454      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
455      for now, in exf_bulk_largeyeager04.F only :
456      - change implementation for case where windspeed + 2. components wind-stress
457        are read-in. AND use rhoConstFresh to convert evap.
458    o pkg/seaice:
459      - use correct EXCH_UV for wind-forcing (on A-grid).
460      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
461        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
462    o pkg/exf:
463      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
464      EXF_INTERPOLATION:
465      - merge global_with_exf/code version of exf_interp_read.F
466        to the main code ;
467      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
468        reading the file ; Important: This options needs to be defined to recover
469        previous code.
470        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
471      - no longer loose real*8 precision along the way when using exf_iprec=64.
472    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
473      - change discretisation of evp-solver in order to avoid another exchange
474        (changes lab_sea) and clean up a little
475      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
476        help the adjoint (this also changes the results slightly)
477      - add a few "_d 0" where they had been missing in seaice_evp.F
478      - cleaning up: remove unused seaice_calc_rhs.F
479    o pkg/exf: some cleaning-up:
480      - change various "constants" into runtime parameters
481      - cleaned-up Large&Yeager04 routine which should eventually
482        replace exf_bulkformulae.F (changed names of S/R and CPP)
483        and merged various ALLOW_ATM_WIND options
484     only used with thsice pkg (in thsice_get_exf.F):
485      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
486        which are used when useStabilityFct_overIce=TRUE (= the default)
487      - change default values of ice & snow emissivity and scale downward LW
488        by ice & snow emissivity.
489    o pkg/thsice:
490     fix few little problems, in thsice_calc_thickn.F:
491      - growth vertically (and not laterally) if iceFrac == iceMaskMax
492      - melt only laterally if hIce < hThinIce (as the comments say)
493      and in thsice_extend.F:
494      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
495      - start to form ice as soon as the minimum ice-volume is reachable.
496     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
497      and cpl_aim+ocn
498    o pkg/kpp
499     - move computation of surface related input fields to KPP into a new
500       subroutine kpp_forcing_surf.F
501     - remove wrong (within bi,bj loops) EXCH calls.
502     - little cleaning (add argument myThid in last position, cvs header ...)
503     - for now, fix conservation problem by exchanging KPPviscAz (may not
504       be the best fix)
505    o pkg/seaice
506     - check for inconsistent evp parameter/cpp-flag combination
507     - remove leftover errIO flat for obsolete name list error handling
508    o OpenAD
509     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
510    
511    checkpoint59a
512    o pkg/seaice: some parameter clarifications and a little bit of clean up
513    o pkg/thsice: rename run-time parameters:
514       himin       -> hIceMin
515       himin0      -> hThinIce
516       hihig       -> hThickIce
517       i0          -> i0swFrac
518       transCoef   -> bMeltCoef
519       frac_energy -> fracMelting
520      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
521       with default values (for now) that do not change the results.
522      remove old version of thsice vars advection in pkg/seaice.
523    o in FFIELDS.h:
524      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
525      - make pLoad & sIceLoad always available (but still only used if
526         ATMOSPHERIC_LOADING is #define).
527    o pkg/kpp: replaced _KPP_RL with _RL
528    o bug fixes for vertical diffusivity computations when both KPP and
529        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
530        are no longer updating the vertical diffusivity array
531        (passed as argument) but are (re-) setting those arrays.
532    o pkg/seaice: fix bug in evp solver, while doing that
533      - change (improve?) discretization of stress computations for both
534        cgrid-lsr and evp solver
535      - add a new routine to compute strain rates
536      - the above changes lab_sea results
537      - add no slip conditions for evp solver (off by default), lsr-version
538        may follow
539      - fix exchange for shear at Z-points (does not change lab_sea)
540      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
541        (to force the user to pick a time step since there is not "safe" way
542        of choosing it)
543      - add principal stress diagnostics
544      - rearrange fields for evp a little to avoid having to call a: too many
545        exchanges and b: exchanges for stress trensor components which we do
546        not have.
547      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
548        of evp, complete rewrite for lsr case (latter is does not yet work
549        in all cases)
550    o pkg/kpp: add code to have mixing in shelf ice caverns
551      - add myThid to all kpp routines (long overdue)
552    
553    checkpoint59
554    o pkg/exf:
555      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
556        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
557      - move exf header files from lower_case.h to UPPER_CASE.h ;
558        add missing cvs Header & Name
559      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
560      - add namelist param. selectStressGridPosition, exf_monFreq
561      - retire many _CLIM routines, and remove data.exf_clim
562        + params moved to data.exf
563        + climsst, climsss now handled by exf_set_gen, i.e.
564          climss?period=0 refers to constant field,
565          climss?period=-12 to monthly forcing
566      - split up namelists in data.exf
567    o pkg/seaice:
568      - remove seaice_exch and seaice_exch_uv
569      - remove superfluous exchange of theta
570      - add myThid to seaice_budget_ocean/ice
571      - add new interface for atmospheric wind forcing (C-grid only)
572        + new routine
573        + two new field (taux, tauy for stress over ice)
574        + removed one global field (DAIRN) for C-grid case only
575    o pkg/thsise
576      - 2nd set of modifs for thsice adjoint in conjunction with exf
577    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
578    
579    checkpoint58y_post
580    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
581      vertical diffusivity, similar to that in MOM4; turned on using
582      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
583      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
584    o Added capability for 3D specification of background vertical diffusion
585      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
586      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
587      "data" file that contains the 3D vertical diffusivity coefficients.
588    o ice dynamics (pkg/seaice) with thsice thermodynamics:
589      - add code within pkg thsice to advect & diffuse sea-ice fields
590      similar to (and will replace) what has been added in  seaice_advdiff.F,
591      but: - conserving Mass, Heat & Salt.
592           - better when using non-linear advection scheme (not yet fully tested)
593           - can also be used in atmospheric set-up (for now, only the diffusion).
594    
595    checkpoint58x_post
596    o IO option for global-file compact format:
597      - add options when generating topology (utils/exch2/matlab-topology-generator)
598      - add I/O capability (pkg/mdsio).
599      - adapt utils/matlab/rdmds.m to read this format.
600      for now long-line format not yet supported by pkg/mdsio (& exch2).
601    o shelfice: add a few diagnostics
602    
603    checkpoint58w_post
604    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
605      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
606      (and replace horiVertRatio in NH code).
607      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
608                         and tutorial_plume_on_slope (sensitive to truncation)
609    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
610      directly to drive seaice model (C-grid only)
611    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
612     - reintroduce computation of wind from stress,
613     - compute tau (in exf_bulkformulae.F) from windstress averaged to
614       mass points to avoid tau = 0
615     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
616    o rdmnc.m: make it work with "global" files created with gluemnc
617    o rdmnc.m : some improvements in dealing with singleton dimension
618      (tested on all testreport mnc output files).
619    o genmake2: disable pkg/profiles if netcdf test fails.
620    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
621    o move call to cal_readparms up to make calendar parameters/variable available
622      to all packages
623    
624    checkpoint58v_post
625    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
626      useDynP_inEos_Zc tested.
627    o pkg/exf: changes to properly interpolate/mask/scale initial fields
628    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
629      and portions thereof.  See read_cs.txt for description and examples.
630    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
631      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
632      following the great-circle arc between those 2 points.
633    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
634      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
635    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
636     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
637     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
638     - still needs work (not working with some options ; efficiency to improve)
639       and serious testing.
640     - use this scheme for temperature & salinity in 2 advection test exp.:
641       advect_xy & advect_xz, respectively.
642    
643    checkpoint58u_post
644    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
645    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
646    o testreport: add option "-skipdir" to skip some test.
647    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
648      momentum calculation.
649    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
650    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
651      remove checkpoint.F and the_correction_step.F (no longer used);
652      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
653    o add option (linFSConserveTr) to correct for tracer source/sink due to
654      Linear Free surface
655    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
656    o pkg/thsice: fix reading mnc-pickups
657    
658    checkpoint58t_post
659    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
660    o pkg/mdsio:
661     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
662       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
663       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
664     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
665     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
666       either MDS_READ_FIELD or MDS_WRITE_FIELD )
667     - new S/R (to replace MDSWRITEMETA), which allows to write more
668       informations (variable names, time ...) to meta files.
669     - modify rdmds.m to give back the meta file content.
670    o pkg/diagnostics: change vertical interpolation to be safer, and more
671       flexible (define p-levels to interpolate to in data.diagnostics);
672      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
673       diagnostic pointer.
674    o pkg/seaice: more cleaning up of seaice_growth, added many comments
675    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
676    o fix multi-category seaice:
677     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
678       SEAICE_MULTICATEGORY
679     - fix short wave heat flux
680    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
681       and allow to use EVP solver. Change forward lab_sea: test both EVP
682       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
683    o Initial check-in of lab_sea adjoint
684      (very similar to natl_box_adjoint/code_seaice)
685      * used C-grid and EVP solver
686      * used KPP, GM/Redi
687      * uses inAdExact=.TRUE.
688      * gradient checks fail for both ADM and TLM
689        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
690        f.d. gradients actually seem more problematic than ADM, TLM gradients;
691        issue is related to forward mismatch between g77 an ifort
692    o pkg/seaice: overhaul of thermodynamics
693     - growth.F and groatb.F are replaced by new routine seaice_growth.F
694     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
695     - move a few global fields out of SEAICE.h into seaice_growth.F and
696       make them 2D (FICE/QNETO/ ...)
697     - remove FO (it is the same as QNETO)
698     - introduce a few local fields to avoid modifying external fields such
699       as atemp, etc.
700    
701    checkpoint58s_post
702    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
703      changed exf_set_gen.F so that
704        genperiod=0 means input file is one time-constant field and
705        genperiod=-12 means input file contains 12 monthly means
706    o CG2D: use pre-computed solver main-diagonal (stored in common block);
707      this affects truncation error ; generate new output file for exp. which
708      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
709        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
710        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
711        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
712        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
713        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
714    o start implementation of deep-atmosphere and anelastic formulation
715    o verification: remove 2nd copy of input files and use script "prepare_run"
716      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
717    o mom_common/vecinv/fluxform: fix a few initialisation isssues
718    o profiles: fix for multithreaded case
719    
720    o diagnostics: rename few diags:
721      s/'PRESSURE'/'RCENTER '/g
722      s/'TICE    '/'oceFreez'/g
723      s/'TAUX    '/'oceTAUX '/g
724      s/'TAUY    '/'oceTAUY '/g
725      s/'SWFLUX  '/'oceQsw  '/g
726      s/DIFx/DFxE/g
727      s/DIFy/DFyE/g
728      and add few ocean-forcing diagnostics:
729      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
730    o modifications to pkg/seaice/growth.F and budget.F, which change results of
731      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
732      as actual snow thickness.  It now refers everywhere to effective snow
733      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
734    
735    checkpoint58r_post
736    o modifications to pkg/seaice/growth.F, which change results of
737      lab_sea experiment: fixes pertain to melting snow over open water, to
738      masking EVAP under sea ice, and to using the correct AREA variable for
739      computations of EVAP, PRECIP, HSNOW, and GHEFF
740    o add ability to read bathy, salt, and theta using MNC (off by def)
741    o add flooding algorithm and advection of HSNOW for pkg/seaice;
742      both are turned off by default and do no change any results
743    o seaice advection with pkg/thsice: a step toward the use of non-linear
744      advection scheme, but #ifdef or commented out for now (requires more EXCH).
745    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
746      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
747      in natl_box (affects results @ truncation level: update output.txt)
748    o multi-threading and IO:
749      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
750      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
751        (needed to work with SingleCpuIO): tested in all verif. exp.
752    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
753      affects the results (but none of the verification test uses this scheme).
754    o Adding some pkg/diagnostics capability to pkg/seaice
755      (will certainly be subject to changes)
756    o ctrl: adding new control variables:
757      lwflux, lwdown, evap, snowprecip, apressure, runoff
758    
759    checkpoint58q_post
760    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
761      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
762      high_res_cube configuration by 4% on Columbia.
763    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
764      add (in global_with_exf/code) a version of EXF_INTERP_READ without
765      dynamical allocation (seems to work in multi-threaded).
766    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
767      single CPU io) so that TAF does not have to see EESUPPORT.h
768    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
769    
770    checkpoint58p_post
771    o obcs: stop if obcs is used with useCDscheme = .true.
772    o shelfice:
773     - fix a sign error so that no slip at shelfice interface works
774     - remove stop for combination non-hydrostatic code and shelfice. That does
775       not mean, that the results are correct, but at least they are numerically
776       stable
777    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
778    o added adjoint exch routined for all exch*3d* routines
779      and updated flow directives
780    
781    checkpoint58o_post
782    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
783      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
784    o change controling S/R for writing pickup file (new S/R do_write_pickup)
785      and clean-up reading/writing of pickup files.
786    o fix local version of read/write pickup (NH part) in rotating_tank/code
787    o simplify EXCH interface:
788     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
789     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
790    o added the regrid package
791    o shelfice:
792     - add a simple boundary layer scheme to reduce noise
793     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
794    
795    checkpoint58n_post
796    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
797       local variable (not in common block).
798    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
799      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
800      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
801        to work with SingleCpuIO.
802    o add "_d 0" to real constant of pkg/cfc subroutines ;
803       update exp. cfc_exemple & tutorial_cfc_offline output files.
804    o multi-threading and IO:
805      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
806        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
807      - barrier before and after reading.
808      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
809      - avoid using MDS_WRITELOCAL for LAND pkg output.
810      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
811        common-block variables ; Allows multi-threading with master-thread IO.
812    o change default MAX_NO_THREADS from 32 to 4 ;
813      and stop cleanly when MAX_NO_THREADS is too small.
814    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
815    
816    checkpoint58m_post
817    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
818       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
819    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
820       keep global_ocean.90x40x15 (for AD testing) with former secondary test
821       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
822    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
823        add MITgcm_tutorials (= code + all the tutorials)
824    o ecco, option to compute cost for total ssh (mean+anom)
825    o consistent with addition of ptracer and ssh in pkg/profiles
826    o profiles: adding ptracer and ssh
827    o testreport: change multi-test output-file name
828      (from output.txt.{name} to output.{name}.txt)
829    o profiles: now ok for mutli-tiles case
830    o seaice: add 4 parameters for different advection schemes for area,
831      (effective) seaice thickness, enthalphy, and snow height. Their default
832      is the standard parameter SEAICEadvScheme
833    o calc_gw:
834     - add cosFacU in zonal viscous flux (harmonic.visc.).
835     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
836       of tutorial_plume_on_slope.
837    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
838    o calc_gw: true flux-form, account for horizontal grid spacing.
839      update rotating_tank results, but not plume_on_slope (affected at
840      truncation level, 11 digits).
841    
842    checkpoint58l_post
843    o calc_gw:
844     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
845     - remove side-drag for now (need to fix it); update plume_on_slope results.
846     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
847    o commit code to make SST/SSS weights spatially variable
848      (based on either variable in-situ or variable initial T/S weights)
849    o pkg/ecco:
850      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
851        now based on horizontally varying weights wthetaLev, wsaltLev
852      * cost_averagesflags now returns year indices in addition to day, month
853      * sflux balance is performed on annual basis
854        (sflxumm, sfluxmm2, bal_sfluxmm)
855      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
856        including separate counting and multipliers
857    o pkg/rbcs
858      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
859    
860    checkpoint58k_post
861    o testreport:
862     - always build in dir. "build" (if not there, mkdir build instead of building
863       & running in input)
864     - run in dir run (if it exists), in build otherwise.
865     - call prepare_run (if input/prepare_run exists)
866     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
867    o pkg/exf modifications to interpolation and rotation routines for more
868       reasonable treatment of North Pole singularity: for tracers North Pole
869       value is set to northernmost zonal-mean value, for zonal velocity it is
870       set to zero, and for meridional velocity it is set to northernmost value.
871    o pkg/exf/exf_check_range.F
872     - add tile index to diagnostics and move stop statement to the very
873       end of the routine.
874    o pkg/diagnostics: (diagnostics_main_init.F)
875      define title of isomorphic variables according to the current config.
876    o pkg/thsice with pkg/seaice dynamics:
877    - fix domain of computation (interior only, required for exf) and do exchanges
878    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
879    o towards a standard way of dealing with multi-threading in MONITOR
880      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
881    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
882       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
883    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
884    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
885    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
886       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
887    o tracer advection:
888     - clean-up and simplify calc_common_factors.F
889     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
890       advection subroutine (but still not used within DST advection S/R)
891    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
892    
893    checkpoint58j_post
894    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
895      from file (collects calls previously in FORWARD_STEP)
896    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
897    o adjoint store dir. adjusted accordingly
898    o genmake2
899      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
900    
901    checkpoint58i_post
902    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
903      on wind stress (SEAICEstressFactor defaults to 1.)
904    o Total number of Timers is finite (<=40): comment out 2 non-essential one
905      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
906    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
907      on CS-grid: no longer loosing mass.
908    o exf & curvilinear-grid: no longer modify longitude xC & xG.
909    o pkg/ggl90: fix sloppy output and fix a bug
910    o pkg/seaice: added SEAICEuseEVPpickup parameter
911      - Set to false in order to start EVP solver with
912        non-EVP pickup files when using SEAICEuseEVP
913      - fix sign error in diffusion in seaice_calc_rhs
914    
915    checkpoint58h_post
916    * Modifications for bottom topography control
917      o replace hFacC by _hFacC at various places
918      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
919      o add non-self-adjoint cg2d_nsa
920      o update autodiff support routines
921      o re-initialise hfac after ctrl_depth_ini
922      o works for 5x5 box, doesnt work for global_ocean.90x40x15
923    * Adding verification for 5x5 box (4-layer) bottom topography control
924    
925    checkpoint58g_post
926    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
927       used for mean seasonal cycle, mean diurnal cycle); add an example
928       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
929    o pkg/ggl90:
930      - add parameter (minimum surface kinetic energy)
931      - fix bug (avoiding division by zero)
932    o couple pkg/thsice to pkg/seaice:
933      - modify advection in seaice to accomodate new scalar fields to be advected
934      - only muliDimAdection scheme work with seaice/thsice
935      - mapping of thsice-variables to seaice-variables, back and forth
936      - does not break the verification experiments, but does not give the
937        desired results either
938    o pkg/seaice
939      - make (default) second order advection a bit less confusing?
940    
941    checkpoint58f_post
942    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
943      to pkg/seaice):
944      - new routines thsice_map_exf and thsice_get_exf provide the interface
945      - add an additional formal parameter to thsice_solve4temp
946    o pkg/exf:
947      - add new fields wspeed, snowprecip (to be able to couple to thsice)
948      - correct Stefan-Boltzmann constant
949      - new parameter for longwave surface emittance
950      - separate some stuff from exf_bulkformulae into new routines  
951        exf_radiation, exf_wind
952      - add new parameters and constants: longwave emissivity for ocean, ice
953        and snow, evaporation parameters over ice
954      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
955        either wind from stress or stress from wind
956    o pkg/thSIce:
957    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
958    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
959       and THSICE_CALC_THICKN
960    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
961    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
962      to make debugging easier.
963    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
964    o pkg/bulk_force:
965      - clean-up comments and parameters ;
966      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
967    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
968      generate new output for test-experiment: aim.5l_cs.thSI
969    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
970      testreport accordingly
971    
972    checkpoint58e_post
973    o SEAICE_CGRID adjoint done
974    o R_STAR adjoint implemented.
975      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
976      * need to sort out init. of h0facc, etc.
977    o Make pkg/profile fully independent of ecco,cost, etc. stuff
978      to be able to use it in pure forward.
979    
980    checkpoint58d_post
981    o upgrade simple test-experiment to tutorial example:
982     step.1: duplicate the experiment and (step.2) will remove the old copy.
983      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
984      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
985      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
986      tutorial_global_oce_biogeo    <- copy of dic_example
987      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
988      tutorial_plume_on_slope       <- copy of plume_on_slope
989      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
990      tutorial_global_oce_optim     <- empty for now (David ?)
991      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
992     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
993    o correct a sign problem in cost_scat.F
994    o obcs and ptracers: fix boundary conditions for advections schemes
995      with larger stencil
996    o thsice adjoint: start
997    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
998      completeness
999    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1000      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1001    o ptracers adjoint:
1002      * avoid extensive recomputatations
1003      * fix missing re-init. of gptr (missed by TAF)
1004    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1005      me to turn off the excessive output to STDOUT that this package produces
1006    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1007      and add those terms in Vector-Invariant formulation.
1008    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1009      if the control period (xx_hfluxperiod etc) is 0
1010    o in profiles pkg, clean routines and fix details
1011    o in ecco pkg, reading ssh data:
1012      fix problem in case the model does not start at iter0=0
1013    o fix mnc-pickup/restart for ptracers
1014    o new package prifiles:
1015      code to compute profile-based cost by Gael Forget
1016      (modifs in ecco, ctrl, autodiff)
1017    o Benign bug fix in initialization (spotted by M. Mazloff) of
1018      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1019    
1020    checkpoint58c_post
1021    o adjoint: finish NLFS adjoint and provide reference output in
1022      verification/global_ocean.90x40x15/results_ad_nlfs
1023    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1024      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1025      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1026      with SEAICE_CGRID defined.
1027    o move calendarDumps from "data" to "data.cal" and clean-up the code
1028      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1029    o add useEXF & useCAL flags (for now, set in hard-coded way)
1030    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1031      (were missing in NH mode, and wrong in quasihydrostatic mode).
1032      waiting for Chris updated version of calc_gw to add those CALLs.
1033    o fix bug in quasihydrostatic S/R ;
1034      add a test for this option: global_ocean.90x40x15.qshyd
1035    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1036      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1037    o add on/off flag useOffLine for package OFFLINE
1038    o seaice:
1039      - modify advection so that it works also on the C-grid
1040      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1041        problem in multi-tile runs with C-grid
1042      - add flags for clipping ice velocities and/or masking solver forcing
1043      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1044        C-grid solver
1045      - added a few comments to seaice_diffusion.F
1046      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1047        are now exclusive)
1048      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1049        required re-ordering the code a little:
1050       + make DAIRN global variable (defined in SEAICE)
1051       + move computation of the viscosities eta and zeta into a new separate
1052         routine (because I need to recompute them in seaice_ocean_stress.F)
1053    
1054    checkpoint58b_post
1055    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1056      update output.txt of exp. aim.5l_cs.thSI
1057    o various mnc cleanups and improvements:
1058      + shrink lookup tables by factor of ~4
1059      + better error reporting when running out of lookup space
1060      + able to handle longer path/file names (up to 500 chars)
1061    o adjoint:
1062      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1063      - TBD: "hidden" mom_vecinv recomp. in dynamics
1064    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1065     (allow to differentiate between forcing components using new integer flags:
1066      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1067     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1068    o ecco
1069      - enable trend removal from SSH anomaly obs.
1070    o adjoint
1071      - a fix for PmEpR when #undef EXACT_CONSERV
1072      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1073      - try to fix "hidden" recomp. in forward_step for NLFS
1074        (NLFS seems broken sometimes after I checked it in)
1075    o seaice:
1076     - add c-grid version of the dynamic solver:
1077       + three new routines that are the c-grid substitute lsr, dynsolver
1078         and ostres
1079       + put a few fields that were local to dynsolver into global common
1080         blocks, so that I can move the computation of stresses etc into
1081         seaice_lsr (saves coding but may break the adjoint).
1082     - replace more hardwired parameters by runtime parameters
1083     - add ice masks that mask the rhs of the implicit solvers where there
1084       is no ice (commented out in seaice_dynsolver, because i am not sure
1085       if this works properly), eventually this should replace the clipping
1086       of ice velocities in seaice_dynsolver to +/-40cm/s.
1087    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1088      include it only where its needed
1089    o move balancing of fluxes before the call of external_forcing_surf
1090    o seaice:
1091      - correct units of turning angles (now they are really in degrees)
1092      - move computation of GWATX/Y out of main routine into dynsolver
1093      - initialize GWATX/Y in seaice_init
1094    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1095      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1096    o seaice: add runtime flags for turning angles (default to zero)
1097    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1098      and trend from exf forcing and ctrl control adjustments
1099    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1100      (since checkpoint57x_post)
1101    o change the default rotation period to 86164.s = the Earth rotation
1102    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1103      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1104    o seaice advection: add code for choosing between the default (2nd order
1105      central differences) and multiDim advection schemes provided by
1106      pkg/generic_advdiff
1107    o seaice:
1108      - removed all references to SEAICE_GRID.h fields from
1109        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1110        (cubed-sphere configuration will change a little)
1111      - grid computations in seaice_init are obsolete now.
1112      - cleaned up code a little so that is easier to read (hopefully).
1113      - added new (better?) discretizations of default advection and diffusion
1114        (turn on with SEAICEuseFluxForm)
1115      - replace 1 in 3d global fields by kSurface in growth.F
1116      
1117    checkpoint58a_post
1118    o seaice:
1119      - bug fix in advect.F
1120    o shelfice:
1121      - separate shelfice load anomaly from pload (breaks with time
1122        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1123        Its default is 0., but it may be computed more cleverly from (unknown)
1124        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1125        done offline. A good approximation of the pressure load anomaly is
1126        necessary to avoid large initial adjustment processes underneath
1127        deep-reaching shelfice.
1128      - small fix in ISOMIP shelfice_thermodynamics
1129      - add more sophisticated thermodynamics of Hellmer (1989), this is
1130        now the default
1131      - give a few constants more intuitive names
1132    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1133      if bulk formulae are used in long integration (especially EmPmR). Turn
1134      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1135      if balancePrintMean, the imbalance that is substracted is printed to
1136      STDOUT.
1137    o fix bug (typo) in obcs_apply_eta.F
1138    o add a new package shelfice which enables us to model the circulation
1139      underneath shelf-ice with draughts of hundreds of meters.
1140     - works
1141     - to do: + include improved thermodynamics
1142              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1143                instead of new field kTopC
1144              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1145                instead of new field R_shelfIce and new code in ini_depth.F
1146                and ini_mask_etc.F?
1147              + adjust vertical mixing schemes?
1148    o seaice pkg:
1149     - add a cpp-flag to include a simple formula for a salinity dependent
1150       freezing point of sea water at the surface
1151     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1152       meridional stresses are now different (and hopefully correct)
1153    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1154       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1155       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1156    o pkg/diagnostics: add options and parameters for regional-statistics
1157       diagnostics ; define regions by reading a region-mask from a file
1158       (might add other options later)
1159    o pkg/bulk_force:
1160     - add option and parameters to use AIM surface-flux formulae.
1161     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1162       others forcing fields (defined in PARM05, parameter file "data") are loaded
1163       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1164     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1165     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1166     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1167       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1168     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1169    
1170    checkpoint58
1171    o add "--embed-source" option to genmake2 which, when the supporting
1172      tools can be compiled (as determined by genmake2) will turn on the
1173      embed_files package which then embeds the entire MITgcm source code
1174      (*.[fFhc] + Makefile) used for the build within the executable
1175      - requested by CNH but off by default
1176      - adds a paltry <9MB to the mitgcmuv executable in most cases
1177      - only writes the output when useEMBEDSRC in eedata is true
1178    o clean up 3-dim. relaxation codes:
1179      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1180      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1181      * Thanks to Tom Haine for testing!
1182    
1183    checkpoint57z_post
1184    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1185      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1186    o fix the pickup behavior for obcs in combination with ptracers
1187    o fix a bug in ptracers_external_fields_load
1188    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1189      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1190    o transfered surface NH pressure to eta field (if exactConserv).
1191    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1192         and update lab_sea output.txt file.
1193    o completing 3-dim. relaxation code: additional term
1194         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1195      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1196      * At compile time, in "EXF_OPTIONS.h" set
1197          #define  ALLOW_CLIMTEMP_RELAXATION
1198          #define  ALLOW_CLIMSALT_RELAXATION
1199      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1200          tauThetaClimRelax3Dim = 15552000.0,
1201          tauSaltClimRelax3Dim  = 15552000.0,
1202      * 3 cases:
1203          1) Use a constant-in-time 3-dim. field
1204          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1205          3) Real-time relax. to time-evolving prescribed field
1206    o Adding Laplacian-type smoothness constraint on
1207      initial and boundary (forcing) controls (ic, bc)
1208      * enable at compile-time via
1209        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1210      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1211      * Absolute scale somewhat unclear so far
1212      * no area weighting was included since no other cost term does so far
1213    
1214    checkpoint57y_post
1215    First step for a NLFS adjoint
1216    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1217    o new init. routines for calc_r_star, calc_surf_dr
1218    o still need to deal with ini_masks_etc
1219    o testreport seemed happy
1220    checkpoint57y_pre
1221    
1222    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1223    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1224    o add new offset feature to offline pkg (plus minor cleanup)
1225    o cfc fixes for final year of integration
1226    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1227      be in GCHEM_OPTIONS).
1228    
1229    checkpoint57x_post
1230    o fix testreport Pb in multiple test experiment.
1231    o cleanup our namelist syntax in verification:
1232      - make it more F95 standards compliant (some work still needed)
1233      - allows the vast majority of our tests to work with gfortran
1234    o Non-Hydrostatic:
1235     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1236     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1237    o Allow to apply AB on T,S rather than on AB(gT,gS):
1238     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1239     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1240       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1241     - need a "clever" read_pickup to restart from the other AB formulation
1242    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1243    o remove some unused variables (reduces number of compiler warnings)
1244    o adjoint
1245      * Disable useVariableViscosity for adjoint for time being
1246        (there are a number of extensive recomputations)
1247      * Initialize certain variables needed for adjoint
1248    
1249    checkpoint57w_post
1250    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1251                 fix the singleCpuIO RS version of MDSWRITEFIELD
1252       and add a WARNING if using globalFiles=T with multi-processors.
1253    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1254      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1255    o tracer advection scheme:
1256      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1257       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1258       was not very convenient).
1259      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1260       (further tests needed for the implicit DST & Flux-Limiter schemes).
1261    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1262      and sRef for convenience, handy, when you want to initialize
1263      ptracers in a large domain with a constant non-zero value. Also,
1264      untangle ptracers_init.F a little.
1265    
1266    checkpoint57v_post
1267    o change dome exp. to use variable viscosity in side-drag terms.
1268    o remove all the files from the cfc_offline test since they are now
1269      incorporated into tutorial_cfc_offline which has been producing
1270      identical results for a few days of testing
1271    o add new parameter: sideDragFactor to enable half-slip-side BC
1272      and change side-drag S/R to use viscosity from mom_calc_visc
1273      (can switch back by setting sideDragFactor=0.); affects results at
1274      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1275       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1276    o vorticity & strain are now computed without masking, to account for
1277      no-slip-side BC in variable viscosity calculation ; mask is applied
1278      anyway later on, before computing advection/coriolis terms.
1279    o modify exp4 to test new obcs support for reading from external files
1280      and for passive tracers
1281    o fix behavior of ptracers_monitor when monitor output is written to a
1282      netcdf-file; still not independent of monitor.F (writes in the same
1283      file).
1284    o change default value of tRef (put a uniform, meaningful value for ocean
1285      & atmos) and initialize sRef (was missing, as Martin mentioned).
1286    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1287      to be proportional to enstrophy dissipation length.  Thus,
1288       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1289      This is now consistent with Smagorinsky and with the manual.
1290    
1291    checkpoint57u_post
1292    o OBCS and PTRACERS: add open boundary support for passive tracers
1293      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1294        OB-values from file; this is not different from the way theta and salinity
1295        are treated
1296      - however, Orlanski-radiation conditions are not supported, and the model
1297        will stop if you use pTracers and Orlanski at the same time.
1298      - beefed up the rountine obcs_external_fields_load: now only those open
1299        boundary values are overwritten with values from files for which there
1300        are really files, otherwise the OB-fields remain untouched. This makes
1301        it possible to use different OBs at different ends of the domain (as
1302        with EXF)
1303    o reduce number of exch calls in shap_filt (s2).
1304    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1305      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1306    
1307    checkpoint57t_post
1308    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1309    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1310      same truncation, independent of the face number: affects affects several
1311      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1312    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1313      note that biharmonic viscosity + no-slip was not tested in any experiment.
1314    o fix bug in non-linear free-surf side-drag ; generate new output for
1315      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1316    o make mnc honor the writeBinaryPrec flag for most kinds of output
1317    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1318    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1319      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1320    o add brackets in multi-terms sum to get same truncation, independent of
1321      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1322      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1323    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1324      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1325      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1326      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1327      Suggested values of viscosity parameters found in mom_calc_visc.
1328      Many new viscosity diagnostics available.
1329    
1330    checkpoint57s_post
1331    o Add clearing-house for viscosity calculations, mom_calc_visc and
1332      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1333      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1334      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1335      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1336      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1337      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1338      ViscAhStrain and viscAhTension are now retired.
1339    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1340    o In response to JMC's bug report, genmake2 now ignores any soft-links
1341      that it finds in the *current* directory when searching for files.
1342      Soft-links found in any other source directories will still work as
1343      they did before.
1344    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1345      a C routine to unlimit the stack size
1346    o mnc-ify pkg/aim snapshot vars
1347    o mnc-ify pkg/land as requested by Daniel
1348    o various changes to mnc including:
1349      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1350      - output can now be grouped so that all files within a group
1351          change the ITER portion of their names in lock-step together
1352      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1353          and works with both EXCH1 and EXCH2 (but needs more testing)
1354      - writing works for all verification test cases w/ g77 on Linux
1355    
1356    checkpoint57r_post
1357    o make MNC variable initialization happen earlier
1358    o add diagnostics for (almost) each term of the momentum Eq.
1359    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1360    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1361    o remove MINIMAL_TAVE_OUTPUT option ;
1362      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1363    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1364      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1365    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1366    o add time-dependent SST, SSS control
1367    o cost terms in ecco/ modularized (new cost_generic.F)
1368    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1369    o new infrastructure for seaice model vs. obs misfits in seaice/
1370      * driver from the_main_loop.F is seaice_cost_driver.F
1371      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1372      * gradient check in Exp. 6a of natl_box_adjoint/
1373    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1374      (see README file)
1375    
1376    checkpoint57q_post
1377    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1378    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1379      - bug was reported by Jean-Michel and Ian Fenty
1380    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1381      update exp. cpl_aim+ocn output.
1382    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1383      Needed for high-res. runs with large global files
1384      to be able to limit tapelev size
1385    o Changed some tests for adjoint:
1386      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1387      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1388      * global_ocean.90x40x15/ back to default 3-level checkpointing
1389    o Modifications to enable scripted COMMON to MODULE conversion
1390      * verification/OpenAD/code/ has necessary scripts and description;
1391      * converts, compiles and runs successfully;
1392    
1393    checkpoint57p_post
1394    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1395    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1396      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1397    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1398    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1399      (was already the case for dissipation with mom_vecinv,
1400       and also the case for grad.PhiHyd when staggered-timeStep)
1401      This will allow to put dissipation out-off the AB time-stepping.
1402     Unfortunately, affects truncation error. Update output of exp. that "fails"
1403      (cg2d matching number) and leave the others for later: front_relax(10),
1404      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1405      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1406    
1407    checkpoint57o_post
1408    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1409      (2) its ready to be documented during the 20050801 DocFest
1410    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1411      for ideal_2D_oce and lab_sea on linux_ia32_g77
1412    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1413      in global1x1_tot/code_seaice_adj to access indices 32, 33
1414      (worth another tag)
1415    
1416    checkpoint57n_post
1417    o adding precip control xx_precip 32
1418    o adding swflux control xx_swflux 33
1419    o Replacing 10 forcing penalty cost routines by 1 generic.
1420    o Implementing partitioning in time-mean and variable adjustment
1421      for atmos. state.
1422    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1423    o in natl_box_adjoint:
1424      * updated exp 1 to 10
1425        (but does not have time-mean vs. variable split results yet)
1426    o updated global1x1/*_seaice_adj/
1427      to incorporate latest changes
1428    o enable useSingleCpuIO for mdsio vector routines
1429      (applies in particular to tapelev I/O)
1430    o removed inefficient K-loop in all active_file*control*.F
1431    
1432    checkpoint57m_post
1433    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1434      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1435    o pkg/exch2: filling of face-corner halo regions is optional
1436      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1437    
1438    checkpoint57l_post
1439     tag before updating tutorials (pre-release-2)
1440    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1441       for output and interpolation of input fields onto model grid)
1442    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1443       Affects results of exp. rotating_tank ; update output.txt.
1444    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1445          and taking the square quantity and/or using a fraction-weight field.
1446    o fix aim_diagnostics_init.F mate numbers.
1447    o add mnc output capability to diagnostics/diagstat and update
1448      our cvsignore files for the ACSII output generated
1449    
1450    checkpoint57k_post
1451    o lab_sea now uses diagnostics package and provides a suite of
1452      new EXF diagnostics output.
1453    
1454    checkpoint57j_post
1455    o exf
1456      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1457        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1458        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1459      * extended diagnostics output
1460        - now includes all EXF variables
1461        - hs, hl moved to common block
1462        - separate S/R for diagnostics, called after ctrl vector is added
1463        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1464        - EXFqnet contains true Qnet (i.e. includes qsw)
1465      * updated verif. lab_sea, global_with_exf
1466      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1467        to ensure that diagnostics sees a true EXFqnet
1468    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1469    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1470      several times with different frequencies.
1471    o mnc-ify the thsice package as requested by Daniel Enderton
1472      - the monitor--MNC output needs work
1473      - many attributes need to be added (most are currently blank)
1474    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1475      - many attributes need to be added (most are currently blank)
1476    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1477    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1478    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1479      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1480         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1481    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1482     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1483    
1484    checkpoint57i_post
1485    o Diagnostics package was changed: diagnostic allocation is now deactivated
1486      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1487    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1488      add 1rst Order upwind vertical Shear.
1489    o add a quick fix for A/B checkpointing in OFFLINE mode
1490    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1491      end-run around the C/Fortran linking horror in eesup/src/timers.F
1492    o added pkg/runclock: allows user to terminate run based on wall clock
1493    o added non-hydrostatic scaling parameter: nh_am2
1494    o pkg/my82: futile attempt to make results compiler-independent by adding
1495      some "_d 0", etc. no effect.
1496    o for mnc output, fill the 'T' coordinate var with myTime and create a
1497      separate 'iter' variable for iteration count
1498    o pkg/diagnostics:
1499      add new capability: output of Global/Regional & per-level statistics ;
1500      tested against monitor output (including land & thSIce) on various exp.
1501    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1502    
1503    checkpoint57h_done
1504      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1505      data.diagnostics, data.gchem, data.ptracers) is done.
1506    
1507    o pkg/diagnostics: prepare for Global/Regional statistics.
1508      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1509    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1510      and rename it: DIFFERENT_MULTIPLE
1511    
1512    checkpoint57h_post
1513    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1514    o pkg/diagnostics: change output frequency, now in seconds (instead
1515      of Nb of iterations). This requires to change data.diagnostics.
1516    checkpoint57h_pre
1517    
1518    o in mnc, let the user create the output dir if both mnc_outdir_date
1519      and mnc_outdir_num are false
1520    o add fflags() to pkg/diagnostics which allows one to specify, on a
1521      per-file basis, the file precision [default behavior is unchanged]
1522    o added diagnostics to pkg/kpp, including computation of mixed layer
1523      depth based on a temperature/density criterion
1524    o updated verification/natl_box to test the new pkg/kpp diagnostics
1525    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1526    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1527    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1528      not mnc -- this mistake was found by JMC and is now corrected
1529    
1530    checkpoint57g_post
1531    o add Adams-Bashforth 3rd Order time stepping:
1532      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1533      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1534    checkpoint57g_pre
1535    
1536    o make lambda[Theta,Salt]ClimRelax spatially varying
1537      (default remains spatially uniform constant based on tau)
1538    o added new control variables
1539      * init. uVel, vVel, etanN
1540      * lambda[Theta,Salt]ClimRelax
1541    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1542      (suggested by G. Forget)
1543    
1544    checkpoint57f_post
1545    o add parameter "baseTime" = model base time = time at iteration zero
1546      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1547      account for baseTime shift
1548    o move Coriolis arrays from PARAMS.h to GRID.h
1549    checkpoint57f_pre
1550    
1551    o mnc-ifying the seaice package
1552    o introduced an alternative length scale calculation for use in the limiting
1553      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1554    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1555    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1556      as well as grad(vort3).  Made it compatible with both approximate form
1557      for the cubed sphere and full form of these gradients.  Added flag
1558      useFullLeith to select between approximate and full form.  
1559    o add "d0" in getcon.F to reduce differences between compilers/platforms
1560      update output.txt of exp. fizhi-gridalt-hs
1561    o change port_rand funtion to allow to set the seed.
1562    o fix obscure MNC bug involving conversion between reals and integers
1563      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1564        new version is now more standards-compliant
1565    o adjoint-related modifications
1566      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1567      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1568      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1569    
1570    checkpoint57e_post
1571    o Adding eddy stress controls a la Ferreira et al.
1572    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1573    
1574    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1575      update output.txt of exp. fizhi-gridalt-hs
1576    o add more "Z" dimensions and associated coordinate vars to MNC
1577    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1578    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1579      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1580      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1581      months and years.  Requires pkg/cal.
1582    o diagnostics: add pickup functionality
1583      - off by default for backwards compatibility
1584      - current version only uses MDSIO -- MNC will be added
1585    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1586    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1587    
1588    checkpoint57d_post
1589    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1590    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1591      output from the diagnostics package
1592    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1593    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1594      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1595    o add coordinate variables to the MNC output from the diagnostics package
1596    o change MNC-flags default value: true when useMNC=TRUE
1597    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1598      the ability (off by default) to read the grid information using MNC
1599    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1600    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1601    o do snap-shot diagnostics at the middle of the time-interval (instead of
1602      at the end).
1603    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1604      new test for AIM with thSIce + slab-ocean
1605    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1606    o move state variable diagnostics to the beginning of the time step ;
1607      (note: still needs some work specially for snap-shot diagnostics)
1608      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1609    
1610    checkpoint57c_post
1611    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1612    o generate new output.txt files on faulks with g77 & the new -ieee option
1613    checkpoint57c_pre
1614    
1615    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1616      update output.txt of exp. global_ocean.90x40x15
1617    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1618      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1619    o add saltFlux(+File) forcing capability with periodicExternalForcing
1620    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1621    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1622    o improvements for the MNC output from DIAGNOSTICS:
1623      - correct handling of the unlimitied dimension
1624      - all dims now have associated coordinate variables
1625      - variables located at U, V, and Corner ("Z") points are now written
1626        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1627        *all* data points are output
1628    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1629    o added pkg/seaice/seaice_monitor.F
1630    o mdsio_readfield.F can now read files visible only to master MPI process.
1631    o pkg/seaice: some test code for ice-modified ocean stress
1632    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1633      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1634      spurious negative numbers for precipitation and humidity.  Will cause
1635      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1636    o pkg/ctrl/
1637      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1638        May be enabled via doPackDiag
1639      *  introduce z-scaling of
1640         + gradient (doZscalePack) and
1641         + control (doZscaleUnpack)
1642    o pkg/mdsio/
1643      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1644      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1645    
1646    checkpoint57b_post
1647    o simplify options in diagnostics_fill arguments (remove weird combinations)
1648    o fix MNC coordinate variables so that they now contain per-face index
1649      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1650      general, EXCH2 grids are only aligned to a "local" coordinate system
1651    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1652    o Implement instantaneous output within pkg diagnostics:
1653      setting a negative frequency in data.diagnostics produces
1654     "snap-shot" output (as opposed to time-average if freq > 0)
1655    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1656      NOTE: change ptracer diagnostics name: use 2 characters to work with
1657            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1658    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1659      becomes the coordinate variable for the 'T' dimension
1660    o add CF-style coordinate variables to MNC
1661      - just a first cut:  numbers are meaningless on the cubesphere and
1662        missing along the T axis but otherwise it works!
1663    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1664    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1665    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1666      this is based directly on what the model compute, so that the content of
1667      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1668    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1669    o clean up build options files for SunOS, in particular
1670      - remove -traditional from xmakedepend
1671      - change -xarch=v9 to -xarch=native for f77
1672      - restore use of make (not gmake)
1673      - add CC=gcc if using g77
1674    o changes per discussion of AM, JMC, & EH3 today:
1675      - move redundant "grid" variables out of "state" -- in preparation of
1676        creating proper CF-style coordinate variables and in recognition
1677        that any/all grid variables can be easily copied (eg. w/NCO) from
1678        the grid files into any of the other NetCDF files
1679      - *always* output grid variables with MDSIO (this will eventually be
1680        changed)
1681      - output MNC grid file if useMNC is true
1682    o every instance of _END_MASTER() has been found and replaced with
1683      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1684      preprocessors
1685    o re-arrange diagnostics pkg initialisation:
1686     - allow each package to extend the available diagnostics list
1687     - add some checking and fix small problems (multi-threaded, ...)
1688     - new S/R diagnostics_fill (replace fill_diagnostics):
1689       look through the short list of active diag. (instead of the long list)
1690       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1691    
1692    checkpoint57a_post
1693    o this set of changes restores TAMC compatibility
1694      tested for global_ocean.90x40x15 adjoint on trough
1695      (what a pain)
1696    
1697    checkpoint57a_pre
1698    o some modifs in tools/build_options for sunos
1699    o call ctrl_pack for ctrl at end for optimcycle=0
1700    
1701    checkpoint57
1702    o add horizontal bi-harmonic viscosity for vertical velocity
1703      - new parameter viscA4W (defaults to viscA4)
1704      - affects only non-hydrostatic code
1705      - to be done: no-slip lateral boundary conditions
1706    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1707    o implement Implicit Vertical advection for pTracers
1708    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1709      (implemented also for implicit vertical diffusion & advection)
1710    o OBCS: extend application of tracer open boundary conditions
1711      to a strip beyond the boundary of width Olx/Oly
1712    o add call monitor to TAF set of required calls (flow directives)
1713      and include in natl_box_adjoint
1714    o untangle a few ifdefs related to cost, ctrl, autodiff
1715      untangel a few ALLOW_ECCO_OPTIMIZATION
1716    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1717      (theta2, salt2 in ecco_cost_weights)
1718    
1719    checkpoint56c_post
1720    o OBCS as control variables
1721      - update ctrl_ad_diff.list, obcs_ad_diff.list
1722      - remove balance of obcs controls from default
1723      - fix index bug nobcs in ctrl_init
1724      - fix dummy fields filen in ctrl_pack
1725      - add dummy weights for obcs
1726    o lsopt: comment out fort.94 output
1727    o optim:
1728      - remove unnecessary header files
1729      - adjusted namelists
1730      - add xerbla.F to Makefile
1731    o exf:
1732      - multiple modifications of exf_check_range
1733      - unit change in exf_init_runoff from [m/year] to [m/s]
1734    o mdsio:
1735      - i/o-vector change debugLevel from debLevA to debLevB
1736    
1737    checkpoint56b_post
1738    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1739      is called from DO_THE_MODEL_IO
1740      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1741      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1742      - clean up PTRACERS_WRITE_TIMEAVE a little
1743    o add another verification experiment that tests both the cfc-pkg and
1744      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1745      reactive tendencies treated inline with regular timestepping
1746    o testreport previously did a lousy job of comparing small numbers, so
1747      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1748      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1749      testreport.
1750    o ptracers_monitor: bug fix for MPI
1751    
1752    checkpoint56a_post
1753    o GCHEM: finish reorganizating the package
1754      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1755        (introduces another 3D-array for each passive tracer, but only if
1756        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1757        gchemTendency is not needed because the timestep is done separately)
1758      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1759      - GCHEM is now---more or less cleanly---separate from PTRACERS
1760      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1761        so clear to me how that should be done in a general way.
1762    o CFC: improve formatting of output in CFC_ATMOS
1763    o PTRACERS:
1764      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1765        that ALL experiments with ptracers enable can be checked. This makes
1766        GCHEM_MONITOR obsolete.
1767      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1768        monitorFreq
1769      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1770    o add PTRACERS (PTR0[1-5]) to testreport output
1771    o exf_check_range:
1772      * default changed to .TRUE.
1773      * will check values for niter0 if debLevA, every timestep if debLevB
1774      * STOP in exf_check_range if 'out of range'
1775      * range chosen generous to allow for potential extema
1776      TBD: a version with stricter range
1777           permitted range would be runtime parameters
1778    o GMredi:
1779      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1780      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1781      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1782    o GCHEM:
1783      - move call to GCHEM_FORCING_SEP, so that it is now called before
1784        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1785      - introduced a useGCHEM runtime flag and applied it everywhere.
1786      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1787        this flag is now only visible within GCHEM-pkg routines.
1788      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1789        be replaced by a 3D array that is computed before thermodynamics; for
1790        this, the tracer ID iTracer had to be included into the parameter list
1791        of ptracers_forcing
1792      - set up forward_step to call gchem_forcing, that will replace
1793        gchem_forcing_int in ptracers_forcing
1794      - cleaning up
1795    o small cleaning of exch2: remove files that are also in eesupp/src
1796    
1797    checkpoint56
1798    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1799    o mnc: cleanup "full" files--fixes out-of-memory problem
1800    o ECCO-GODAE
1801      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1802      * fully merged and updated from SIO code
1803        windstress sign change affects
1804        - exf_inscal_[u/v]stress
1805        - sign of xx_tau[u/v] adjustments
1806        - signs in cost_scat
1807      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1808      * natl_box_adjoint updated and compressed
1809      * 2-level checkpoint switch added
1810        (tested in EXP. 1 of natl_box_adjoint)
1811      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1812    o SVD
1813      * first complete, non-hacked version for SVD calculations
1814      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1815        performed via direct access files admtlm_vector.it????
1816        (via ctrl_[un]pack)
1817      * optimcycle is used for ARPACK iteration counter
1818        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1819      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1820        and add linear transforms where necessary
1821      * controls are initial/final SST, SSS (can be extended; need to check
1822        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1823    o mdsio: filename info to both stderr, stdout
1824    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1825      from sign change
1826    
1827    checkpoint55j_post
1828    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1829      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1830    o add consistent build directories and .cvsignore files to verification
1831    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1832    o make all subroutines 30 or less characters in length for certain older
1833      compilers to work (a thorough search only turns up two routines in
1834      pkg/ptracers)
1835    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1836      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1837    
1838    checkpoint55i_post
1839    o change arrays for total vertical diffusivity (2.D if explicit,
1840      3.D if implicit) ; each ptracer uses its own background value.
1841    o added mnc/NetCDF output capability to ocn_compon_interf
1842      - added bits to verification/cpl_aim+ocn so that it can run on
1843        ITRDA and other clusters without the mpirun "-wd" option
1844    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1845      configuration
1846    o give MNC the ability to create additional files rather than
1847      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1848      - the default is just less than 2GB which is a practical limit
1849        on many systems
1850    o Compute the non-local term using either KPP vertical diffusivity (=default)
1851       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1852    
1853    checkpoint55h_post
1854    o add verification test "vermix"
1855    o remove all the *_ioinc flags and replace with the single global
1856      outputTypesInclusive flag
1857    o allow to set a vertical profile of vertical diffusivity for T & S
1858    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1859    o useMNC moved from data.mnc to data.pkg
1860    
1861    checkpoint55g_post
1862    o Renaming carbon AD experiments to comply with testreport conventions
1863    o Updating adjoint of Held-Suarez hs94.1x64x5
1864    o Fixing directives for non-ECCO forward_step, after ECCO directives
1865      have been fixed to avoid recomp. of do_oceanic_phys
1866      Works well for global_ocean.90x40x15,
1867      but recomp. issue remains for carbon
1868    o Updating adjoint output for natl_box_adjoint after
1869      pkg/ecco has been modified (see taga c55d_post)
1870    
1871    checkpoint55f_post
1872    o rename to timeave_init_fixed
1873    
1874    checkpoint55e_post
1875    o some delicate re-shuffle of store directives to avoid one
1876      extra call of do_oceanic_physics
1877      affects ecco_the_main_loop.F, do_oceanic_physics.F
1878      checkpoint_lev1_directives.h
1879    o NB: this may break global_ocean adjoint temporarily,
1880      but it is clear how to fix it. Will do later, need this now.
1881    
1882    checkpoint55d_post
1883    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1884    o ecco_cost_weights is modified to 1x1 runs
1885    o modifs to allow observations to be read in as
1886      single file or yearly files
1887    o enable to read exf forcing fields as either
1888      single file or yearly files (flag useExfYearlyFields)
1889    checkpoint55d_pre
1890    
1891    o switch between 2-level and 3-level checkpointing
1892    o add ability of MNC to write local and "partial" (eg. 2D slices where
1893      the full 3D field is never actually stored) arrays to NetCDF files
1894      with the correct (that is, the complete multi-dimensional) set of
1895      array indicies
1896      - used in mom_vecinv() to write the diagFreq output
1897      - tested (demonstrated) in verification/aim.5l_cs
1898    o further mnc-ification
1899      - add verification/lab_sea to the list with mnc setups
1900      - fix undefined mnc v-names in cd_code
1901      - add kpp to mnc output (both snapshot and timeave)
1902    o non-hydrostatic code
1903      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1904        in calc_gw.F
1905      - defaults to viscAh
1906      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1907        friction or Leith) in non-hydrostatic mode, as long as there is
1908        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1909    o pkg/cost
1910      extend simple cost functions to treat time mean quantities
1911      (T,U,V) via cost_accumulate_state from cost_tile
1912    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1913        be 2 times larger than the minimum size the advection scheme requires.
1914        now get a perfect conservation of salt in advect_cs test-exp (updated)
1915    o GGL90 (Gaspar's TKE mixed layer)
1916      - add horizontal diffusion of TKE, requires exchanges in
1917        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1918        default. In OPA there is no horizontal diffusion of TKE but the
1919        mixing coefficients are computed from a horizontal average of TKE of
1920        6 points or so. I think that diffusion has a little more physical
1921        justification.
1922      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1923        was in vain)
1924      - mask tke-variable in ggl90_init
1925    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1926    o fix biharmonic diffusion on CS-grid.
1927    o more obcs stuff
1928      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1929        for reading boundary values. This routine is called from
1930        obcs_prescribe_read
1931      - updated obcs_check
1932      - changed sponge layer relaxation parameter units for days to seconds
1933      - turned off sponge layer by default
1934      - changed argument list of OBCS_CALC to myTime+deltaTclock
1935      - fixed about 35 bugs in obcs_external_fields_load
1936    
1937    checkpoint55c_post
1938    o obcs stuff
1939      - new runtime flags useOBCSprescribe, useOBCSbalance
1940      - re-arranged obcs_calc
1941      - moved exf_getobcs to obcs_prescibe_read
1942        obcs_prescibe_read is called after ORLANSKI stuff
1943        and independent of it (executable can contain all).
1944      - updated obcs_check
1945      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1946        These may be necessary only if tangential velocities are
1947        prescribed at OB, not sure, needs testing.
1948    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1949      which simplifies the calls and passes the ifc check-bounds test
1950    
1951    checkpoint55b_post
1952    o add a 2D scalar, Z location, exchange_2 routine.
1953    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1954      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1955      affects advect_cs results (for the wrong reason): update output.txt
1956    o use a more standard discretization for biharmonic viscosity ;
1957     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1958      affects results of dome set-up: update output.txt
1959    o fix gad_advection.F (CubedSphere part), back to version 1.23
1960    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1961    
1962    checkpoint55a_post
1963    o merged code to
1964      * prescribe/read time-dependent open boundaries
1965        (works in conjunction with exf, cal)
1966      * sponge layer code for open boundaries
1967      * each boundary N/S/E/W now has its own CPP option
1968        (healthy for the adjoint)
1969    
1970    checkpoint55
1971    o up-to-date adjoint of previous breaks
1972      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1973      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1974      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1975      - carbon: * remove tr1-related adjoint verification
1976                * add ptracer as control variable
1977    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1978      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1979    
1980    checkpoint54f_post
1981    o in verification/carbin/ remove experiment related to
1982      ALLOW_PASSIVE_TRACER (array tr1 etc)
1983      code_ad/ input_ad/ results_ad
1984    
1985    o add two new packages
1986      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1987        + subject to optimization (memory)
1988      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1989        + subject to reordering (many GOTOs in the original code)
1990        + so far opps is called for every (i,j) point, and then operates in
1991          the vertical; one may want to reorder the scheme in order operate in
1992          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1993          fields)
1994    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1995      - all verification tests compile and run with linux_ia32_g77
1996      - defaults are compatible with current input files--nothing
1997        should change if you were not previously using MNC
1998      - MNC output has been added in numerous places (eg. timeave)
1999        but there are still a few writes not yet do-able with MNC
2000        (this is in progress)
2001      - flags now allow for either/or/both use of MDSIO and MNC and
2002        documentation will soon follow
2003      - numerous small formatting cleanups for ProTeX
2004    o add version info (via BUILD_INFO.h) to MNC and stdout
2005    
2006    checkpoint54e_post
2007    o add two new packages
2008      - pp81 (Packanowski and Philander, 1981), Richardson number and
2009        stratification dependent mixing
2010      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2011      - these scheme operate in a similar manner as KPP (without ghat, of
2012        course), however there is only one diffusivity that is used for both
2013        temperature and salinity (and passive tracers)ç
2014    o add offline package
2015    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2016      provided by Stephanie Dutkiewicz
2017    o genmake2: add ability to search for C compilers and cleanup test output
2018      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2019    
2020    checkpoint54d_post
2021    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2022    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2023      leading to additional shift by 5 days each year of integration
2024       (i.e. leading to considerable offset over the years)
2025    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2026    o start with no AB and no initial filtering (staggerTimeStep):
2027      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2028    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2029      (external loading & cpl import/export stay in forward_step.F)
2030    o update coupling interface to work with new staggerTimeStep
2031    o change MDSIO ptracers_pickup.
2032    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2033    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2034    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2035    
2036    checkpoint54c_post
2037    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2038      this affects (truncation error) output.txt of test-exp:
2039       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2040    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2041    o change Qnet to always be the net heat flux, (+upward).
2042      affects (truncation error) output of natl_box exp.: updated
2043    o define the max number of passive tracers in PTRACERS_SIZE.h
2044    o start to test mnc routinely in exp0
2045    o add sea-ice loading (sIceLoad) as a new forcing field.
2046    
2047    checkpoint54b_post
2048    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2049       impressive on Altix and Opteron systems)
2050    o diagnostics can now write NetCDF files through the mnc package
2051    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2052    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2053    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2054      affects (truncation error) output of lab_sea & natl_box exp.: updated
2055    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2056    
2057    checkpoint54a_post
2058    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2059    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2060    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2061    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2062      + internal_wave (shift in writing cg2d_ini_res)
2063    checkpoint54a_pre
2064    
2065    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2066      - modified verification/lab_sea and natl_box_adjoint accordingly
2067    
2068    checkpoint54
2069    checkpoint53g_post
2070    o prepare splitting of thermodynamics: store convect.counter in common block
2071    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2072      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2073    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2074    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2075    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2076    o restore adjointability
2077    
2078    checkpoint53f_post
2079    o modifications that affect AIM experiment results (update output.txt):
2080      - no advection of S at top interface Nr (pkg/generic_advdiff)
2081      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2082    o AIM pkg:
2083      - include stability function into surf.Flux derivative relative to Tsurf
2084      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2085    
2086    checkpoint53e_post
2087    o merged cylindrical coord configuration
2088    o added rotating_tank experiment
2089    checkpoint53e_pre
2090    
2091    checkpoint53d_post
2092    o faulks upgraded: re-generate output.txt that have changed:
2093       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2094    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2095    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2096    o added Sadourny discretization of Coriolis
2097      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2098      - re-enabled use of omega3 (useAbsVorticity)
2099    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2100      vector-invariant equations
2101      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2102    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2103      hopefully without new bugs
2104      - still to do: biharmonic friction for non-hydrostatic w
2105    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2106    o regenerated output for global_ocean_ebm (using -ieee)
2107    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2108      of mom_common/
2109      - simple re-arrangement of instructions within computing loop
2110    checkpoint53d_pre
2111    
2112    checkpoint53c_post
2113    o new version of coupler for AIM+thSIce and Ocean models
2114     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2115     - land: change Evaporation of snow
2116     - aim with thSIce: fix bug in snow-precip.
2117    o changes to calc_gw.F
2118     - bug fix for w^2 term near the bottom boundary
2119     - (hopefully) improve the lateral slip boundary condtions for use with
2120        partial/looped cells
2121      - because the bug fix changes two verification experiments anyway (exp5
2122        and plume on slope), change the lateral boundary condition from half slip
2123        to the value of no_slip_sides
2124    o ebm package wasnt quite up to the parallel task. Fixed that.
2125    o Adjoint of EBM package + verification
2126      * TLM OK
2127      * ADM not sufficient accuracy yet (needs further testing)
2128    
2129    checkpoint53b_post
2130    o Commiting new energy balance model to repository
2131      * package is pkg/ebm
2132      * verif. is verification/global_ocean_ebm
2133      * references are in ebm_driver.F
2134    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2135    C        Global thermohaline circulation. Part I:
2136    C        Sensitivity to atmospheric moisture transport.
2137    C        J. Climate 12(1), 71-82
2138    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2139    C        Global thermohaline circulation. Part II:
2140    C        Sensitivity with interactive transport.
2141    C        J. Climate 12(1), 83-91
2142    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2143    C        Destabilization of the thermohaline circulation
2144    C        by atmospheric eddy transports.
2145    C        J. Climate 7(12), 1870-1882
2146    o Will need long integration testing.
2147    checkpoint53b_pre
2148    
2149    o created pkg/mom_common in preparation for variable viscosity code
2150    o renamed and split ini_mnc_io
2151    o pkg/land: only liquid water can diffuse or run-off
2152    o AIM using land: soil wetness availability account for snow
2153    o added printMapIncludesZeros to EEPARMS namelist
2154    
2155    checkpoint53a_post
2156    o restore TAMC compatiility for exf_constants.h
2157      (no usage of _d in .h)
2158    o Additional storing in KPP in an attempt to fix
2159      TAMC problem with adjoint of KPP code.
2160      (no success...)
2161      Identical code works fine with TAF.
2162    o Fixed verification/natl_box_adjoint experiments.
2163      Initial conditions for Experiments 4 and 5 are now
2164      set to "SEAICE_initialHEFF=0", which is more reasonable,
2165      and hence gives results closer to that of Experiment 2.
2166      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2167    
2168    checkpoint53
2169    o stable checkpoint with up to date adjoint
2170      TLM tests only run for 1st grdchk at the moment. Its unclear if
2171      this is a code problem or a problem with resetting code for g_
2172      variables that is being autogenerated wrong.
2173      Otherwise:
2174       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2175       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2176         are both still in chaos following their security messes.
2177    
2178    checkpoint52n_post
2179    o various build (mostly genmake2) changes including:
2180      - ability to build/run more easily within Cygwin and MacOS X
2181      - more complicated Makefiles with a stronger dependence on Gnu Make
2182    o pkg/seaice modifications
2183      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2184        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2185        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2186      - changed proxy for geostrophic velocity and updated
2187        verification/lab_sea/results/* accordingly
2188      - removed ADI dynamic solver from pkg/seaice
2189      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2190        they caused a segmentation fault under certain circumstances
2191      - removed unused field WATR
2192    o bug fix in exf-package:
2193      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2194         now reflect that.
2195    o small fixes in the cal-package:
2196      - set reference date to first of January for the 'model'-calendar
2197      - failing of cal_CheckDate in cal_FullDate now actually results in a
2198        warning
2199    o small modifications in exf-package to increase flexibility:
2200      - change climtempfreeze from a constant to a runtime parameter that
2201        is specified in data.exf_clim (default = -1.9)
2202      - introduce runtime parameter windstressmax (default = 2.0) that is
2203        specified in data.exf
2204    o fix in pkg/thsice:
2205      - update Evap (Tsf changes) to be consistent with Latent heat flux
2206      - maintain snow precipitation unchanged (even if Tsf >=0).
2207     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2208    
2209    checkpoint52m_post
2210    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2211      this does not change any of the results, because myIter=0 in swfrac always
2212      lead to jwtype=2 (the default anyway), but the call makes little sense
2213      as a default
2214    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2215    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2216      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2217    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2218    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2219    o extending useSingleCpuIO option to work with new exch2 I/O format
2220      - old-style, missing-tile I/O is still accessible by defining CPP
2221        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2222    o monitor package can write to NetCDF files and/or STDOUT
2223    o fix re-definition bug in MNC_GRID_INIT_ALL()
2224    o doc/api_reference added
2225      - a framework for building an API Reference Manual using all
2226        the "protex" comments embedded in the code
2227      - see pkg/generic_advdiff, pkg/mnc for examples
2228    o MNC:
2229      - make myThid the last argument for all subroutines
2230      - new default for the grid files: NO halos
2231      - add useMNC and other run-time flags
2232      - separate per-file-group handling of the unlimited dimension
2233      - early initialization of MNC w/ flags read at the eeboot stage
2234        and lookup tables set in initialize_fixed
2235      - write all MNC output to a freshly-created directory
2236    o thermodynamics sea-ice (thsice) is now tested with testreport.
2237    o test exp. advect_cs: use the standard cs32 grid ; update output.
2238    o Added functionality to grdchk:
2239      pick global i,j,k position (or nearest wet) where to perform check.
2240    
2241    checkpoint52l_post
2242    o new land formulation:
2243      a) use ground enthalpy as prognostic variable to ensure exact
2244         energy conservation.
2245      b) account for water temperature and for latent heat of freezing
2246         in all processes (rain, run-off, ground storage)
2247      c) compute surface and ground temperature implicitly.
2248    o aim_v23 modification for new land model:
2249      a) Treat separately land / ocean / sea-ice surface fluxes
2250         to allow implicit computation of land & sea-ice surface temp.
2251      b) add snow precipitation.
2252    checkpoint52l_pre
2253    
2254    o fix problem (when 1 tile is empty) in min/max monitor.
2255    o fix bug in timeAve (u,vZetatave in common block)
2256    o no restoring terms under ice for pkg/seaice
2257    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2258    o bug fix for pkg/seaice pickups
2259    o change MNC call locations and add coordinate attributes
2260    o mask vorticity at the corner ; affects global_ocean.cs output
2261    o fix ini_curvilinear_grid ; test CS experiments with mpi
2262    o aim.5l_cs: modify sea-ice fraction input file ; update output
2263    o exf: Adding simple range check routine for exf fields after read
2264    
2265    checkpoint52k_post
2266    o removed top-level directory "diags"
2267      - we migrated these functions to pkg/timeave a long time ago
2268    o fixed bug introduced in pkg/monitor
2269    o accuracy ctrlprec = 32 insuffient for gradient checks using
2270      averaged fields (I/O via cost_averages)
2271      -> use ctrl.h in active_file*.F to control I/O precision.
2272    o paramter list of CALL ADTHE_MAIN_LOOP
2273    o added initial do_the_model_io to ecco
2274    o set all ...Freq to zero after cost_final
2275      taveFreq, dumpFreq, pChkptFreq
2276    o MAIN and ECCO differentiability restored
2277    
2278    checkpoint52j_post
2279    o fix nchklev in tamc.h for global_ocean...
2280    o Bringing flow and store directives up-to-date
2281    o Really weird thing!
2282      call do_the_model_io from the_main_loop with parameters
2283      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2284      TAF places a faulty re-call of initialise_varia
2285      after cost_final call which should not be there!
2286    checkpoint52j_pre
2287    
2288    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2289      error messages
2290    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2291    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2292      debug output
2293    o modfied mdsio_writefield.F to handle non-global files under exch2
2294    o update AIM Cubed-Sphere exp (aim.5l_cs):
2295      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2296    o update AIM Equatorial Channel exp:
2297      use standard aim_v23 pkg and change the SST fields to be more realistic.
2298    o globalFile now works with exch2
2299    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2300      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2301    o limit timeave output for hi-res integrations
2302    
2303    checkpoint52i_post
2304    o removed CPP_EEOPTIONS.h from verification/*/code
2305    o updated the tiling for global_ocean_pressure
2306    checkpoint52i_pre
2307    
2308    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2309      the old pkg/aim).
2310    
2311    checkpoint52h_pre
2312    o shortened offending lines in exch2_send_rx?.template
2313    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2314    o genmake2: add build & execute test for NetCDF code
2315    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2316      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2317    o added useSingleCPUIO flag to monitor.F and mon_out.F
2318    o added temporary hack for sea-ice dynamics on the cube:
2319      metric terms are ignored and it is assumed that
2320      there is no sea-ice on cube faces 1, 2, 4, and 5.
2321    
2322    checkpoint52f_post
2323    o added exch2 cube routines to pkg/exch2
2324    o modified hs94.cs-32x32x5 to use it
2325    o added new grid files to hs94.cs-32x32x5
2326    checkpoint52f_pre
2327    
2328    checkpoint52e_post
2329    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2330      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2331    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2332      to work with implicit vertical advection and AB ;
2333    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2334    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2335     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2336    checkpoint52e_pre
2337    
2338    o fix bug in impldiff when Nr=1 or Nr=2.
2339    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2340    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2341    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2342      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2343    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2344    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2345    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2346    
2347    checkpoint52d_post
2348    o re-tiled many expts to allow comparison in multi-processor mode
2349      - updated output accordingly
2350      - changed hs94.128x64x5 to use intial T from file rather than use the
2351        random number generator
2352    o add infrastructure in model routines for fizhi and gridalt packages
2353    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2354    o changes to permit hi-res, cubed-sphere, configuration
2355      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2356      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2357      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2358        of surface winds for the cube
2359      (A verification experiment, based on global_ocean.cs32x15, but with
2360       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2361       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2362       complete with example surface forcing files and matlab scripts to look
2363       at the output and compare it with that of global_ocean.cs32x15.)
2364    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2365       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2366       to conform to the common rule.
2367    o check-in the first version of the coupler + interfaces for multi-components
2368       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2369       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2370       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2371       - ocean and atmos. share the same horizontal grid (no interpolation).
2372       - exchanges between component and coupler is done in forward_step
2373    o new verification experiment, cpl_aim+ocn:
2374       coupled ocean - AIM atmosphere on cs32 grid.
2375    
2376    checkpoint52d_pre
2377    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2378    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2379    
2380    checkpoint52c_post
2381    o Fixing OPTIONS files for use of exf:
2382      - ALLOW_ECCO not needed
2383      - ECCO_CPPOPTIONS.h should not be included from
2384        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2385        as has been the case in the past
2386      - All cal/exf related options are currently set in
2387        single header file. Should remain so until we
2388        agree on a consistent new policy.
2389    o Removed all CPP options for cal package.
2390      cal has no more CPP options.
2391    o modified STOREs in GAD_ADVECTION
2392    o corrected key comp. for passkey
2393    
2394    checkpoint52b_post
2395    o new version: "thsice" of thermodynamic sea-ice pkg:
2396     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2397     - modify fluxes but do not change theta directly;
2398     - light cleaning of bulk_force pkg (still needed with thsice).
2399     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2400       + output_thsice.txt to test thsice & bulk_force pkgs.
2401    o put back grid & coriolis monitor output.
2402    checkpoint52b_pre
2403    
2404    o call "do_the_model_io" at the beginning (=> dump initial state)
2405    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2406    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2407      (need info on NUMBER_OF_PTRACERS)
2408    o missing PTRACERS headers in some routines
2409    o default tamc.h in pkg/autodiff supposed to crash
2410      to ensure proper customization
2411    
2412    checkpoint52a_post
2413    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2414      - moved surfaceTendencyTice from pkg/seaice to main code
2415      - subroutine FREEZE_SURFACE now limits only surface temperature
2416        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2417        => new output.txt for global_ocean.cs32x15 & global_with_exf
2418      - keep the old version of FREEZE for backward compatibility;
2419        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2420      - corresponding modifs for TAF directives
2421    o added surface flux output variables to TIMEAVE_STATVARS
2422    o time-averaged output for pkg/ptracers
2423    o fix problem with ECCO-related divided adjoint
2424      snapshot file was missing some ad-variables,
2425      but no warning issued by TAF
2426    
2427    checkpoint52a_pre
2428    o some bug fixes for #undef REAL4_IS_SLOW
2429    
2430    checkpoint52 = ecco_c52_e35
2431    o after testing adjoints of checkpoint51u_post
2432    
2433    checkpoint51u_post
2434    o this is the post-merge tag of the ecco-branch
2435      (needs another clean checkout and re-testing)
2436    o various natl_box_adjoint configs and results
2437      but no input fields
2438    o obcs adjoint not yet merged!
2439    o adding ECCO global 1x1 and 2x2 degree configs
2440    o updated/extended some store directives for seaice
2441    o pkg/ecco now containes ecco-specific part of cost function
2442    o top level routines the_main_loop, forward_step
2443      supersede those in model/src/
2444      previous input data.cost now in data.ecco
2445      (new namelist ecco_cost_nml)
2446    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2447    
2448    checkpoint51t_post
2449    o this is the pre-merge tag of the ecco-branch
2450    
2451    checkpoint51s_post
2452    o cleanup: removed various obsolete #define-s
2453    o pkg/grdchk
2454      - renamed 'ph-grd 3' to 'grad-res'
2455      - merged from ecco-branch
2456        (remaining bug fixes for obcs gradient checks)
2457      - additional high-precision output for testreport
2458        (grep for 'precision_grdchk_result')
2459    
2460    checkpoint51r_post
2461    o cleaned up or removed CPP_OPTIONS.h files
2462    o updated results for some of the tests to reflect the new
2463      optfiles (-ieee: -O0 instead of -O3)
2464    
2465    checkpoint51q_post
2466    o cd_code:
2467      - moved cd_scheme.F -> cd_code_scheme.F
2468      - separate read_checkpoint from cd_code_ini_vars.F
2469      - separated cd_code part from write_checkpoint
2470      - updated AD_SOURCE, generated .flow
2471      - added CD_CODE_VARS.h to the_main_loop
2472      - Moving cd_code specific store dir.s to pkg/cd_code
2473    o ctrl package totally restructured
2474      - pack/unpack now optional and decoupled from
2475        xx_/adxx_ I/O
2476      - ctrl_pack/unpack cleaned
2477        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2478      - confined inclusion of AD_CONFIG.h to where necessary.
2479    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2480    
2481    checkpoint51p_post
2482    o create initial cd_code package
2483      - WARNING: the initialization of fields within packages
2484        is broken because INI_FIELDS (where READ_CHECKPOINT is
2485        called) is called *before* PACKAGES_INIT_VARIABLES.
2486        This seems to be backwards since
2487        1) its important to initially zero the entire field including
2488           the "halo" region
2489        2) zeroing needs to be done *before* reading pickup info
2490           and the pickup call might or might not happen in any
2491           particular run
2492      - this needs an overhaul for R2
2493    o cleanup verification/*/code/GMREDI_OPTIONS.h
2494    o cleanup testreport
2495    
2496    checkpoint51o_post
2497    o bringing AD-related verif's up to date with genmake2
2498      - carbon/
2499      - global_ocean.90x40x15/
2500      - hs.94.1x64x5/
2501      - (front_relax/ )
2502    o (more) consistent directory structure for AD-related verif.'s
2503    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2504    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2505    o bug fix in find_alpha.F for MDJWF:
2506      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2507        change rho -> rho-rhoConst
2508      - replace call find_rho to find_rhonum
2509    o initialisation of rFlx extended to full array (required by TAF)
2510      and shifted to thermodynamics
2511    o removed PTRACERS.h in ptracers routine
2512    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2513    o Correcting initialisations for fVerU, fVerV.
2514    o helping TAF to recognize dependency on kUp for
2515      fVerU, fVerV
2516    o Replacing delZ by delR in pkg/ctrl/
2517    checkpoint51o_pre
2518    
2519    o undid all of cp51 pending some cleanups and discussion
2520    o added the [#include "AD_CONFIG.h"] statement to all files that need
2521       it for adjoint/tl #defines
2522     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2523     o removed tools/genmake since it no longer works
2524    
2525    checkpoint51n_post
2526    o modifications to make FREEZE flux visible to pkg/kpp
2527      - moved surfaceTendencyTice from pkg/seaice to main code
2528      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2529      - subroutine FREEZE now limits only surface temperature
2530        (this means new output.txt for global_ocean.90x40x15,
2531         global_ocean.cs32x15, and global_with_exf)
2532    o added surface flux output variables to TIMEAVE_STATVARS
2533    
2534    checkpoint51n_pre
2535    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2536    o added [#include "AD_CONFIG.h"] to all files that use the following
2537      defines:
2538      - ALLOW_ADJOINT_RUN
2539      - ALLOW_TANGENTLINEAR_RUN
2540      - ALLOW_ECCO_OPTIMIZATION
2541    
2542    checkpoint51m_post
2543    o incorporating changes to get TAMC/TAF working in genmake2
2544      - added new TAMC/TAF targets to the Makefile
2545      - various cleanups related to package handling
2546      - these changes should have no impact on the forward model
2547    
2548    checkpoint51l_post
2549    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2550     - faster algorithm for cal_addtime.F
2551     - higher precision arithmetic, where needed
2552     - pkg/exf *startdate variables changed from calendar date to
2553       model integration time
2554    
2555    checkpoint51l_pre
2556    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2557    o enable to apply restoring on S & T only in a latitude band.
2558    o update output (external_forcing_surf modif. change truncation errors)
2559       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2560    
2561    checkpoint51k_post
2562    o change default to: useNHMTerms=.FALSE.
2563     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2564       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2565     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2566        exp1, ideal_2D_oce
2567     - change data file of oceanic exp (leave the results unchanged for now)
2568       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2569    o set gravitySign automatically according to the vertical coordinate used
2570      (and change sign: back to "logical" value: +1 when R increases downward)
2571    o added an include barrier to the default CPP_OPTIONS.h and
2572      removed the #include "PACKAGES_CONFIG.h" from it
2573    o fix a bug in mom_fluxform (from chk51j_post)
2574    
2575    checkpoint51j_post
2576    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2577    o adjusted some flow directives (dynamics, thermodynamics)
2578    o added cubed-sphere case to test cost function
2579    o heckpoint_lev?_directives.h now include
2580      pkg-specific directives, whenever those are enabled.
2581    o Moving pkg-specific flow directives to corresponding pkg
2582      Moving pkg-specific differentiation list to corresponding pkg
2583      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2584      ---> conventions are
2585           - pkg_ad.flow
2586           - pkg_ad_diff.list
2587           - pkg_ad_check_lev?_dir.h
2588    
2589    checkpoint51i_post
2590    o merge of the branch-genmake2
2591      - knowingly breaks the older genmake
2592      - automatic generation of all ALLOW_${PKG_NAME} defines
2593      - new testreport supersedes older testscript
2594    o large number of package inclusion and header cleanups
2595    checkpoint51i_pre
2596    
2597    o new output for adjoin of global ocean vector invariant
2598    o fix for checkpoint of thermodynamic seaice and bulk_force
2599    o Steph gchem various cleanups
2600    
2601    checkpoint 51h_pre
2602    o fixed some single quotes
2603    o modify gchem pkg to be more versatile
2604    o modifications to clean up dic pkg
2605    o add pkg/cfc
2606    
2607    checkpoint51g_post
2608    o provide links for ARPACK and ADM*TLM
2609    o start removing verification/vero/
2610    o update AD-related stuff
2611      (in particular some IF-statements in model/src/ routines)
2612    o adding to verification/global_ocean.90x40x15/ adjoint of
2613      vector invariant setup
2614    
2615    checkpoint51f_post
2616    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2617    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2618      of tracer Green's fucntions for ocean inversion project.
2619    
2620    checkpoint51f_pre
2621    o Added on-the-fly spatial interpolation capability
2622        "USE_EXF_INTERPOLATION" to pkg/exf.
2623      - This is a temporary Cartesian-grid hack until
2624        the super-duper ESMF coupler becomes available.
2625      - See verification/global_with_exf/README for usage example.
2626      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2627        flags and modified pkg/seaice accordingly.
2628    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2629        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2630        non-local transport term.
2631    
2632    checkpoint51e_post
2633    o pkg/mom_vecinv:
2634      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2635      - add time-ave diagnostic of vorticity advection.
2636    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2637    o atmospheric geopotential: - include water vapor effect;
2638                                - use p^kappa in p* scaling.
2639    o land pkg: read initial state from files.
2640    o AIM : add stratospheric drag in the upper level
2641    
2642    checkpoint51d_post
2643    o change function ILNBLNK (=> last non-blank char.) to return zero
2644      (instead of the string length) when the string. char is empty
2645    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
2646    o modif's to restore TAMC compatibility
2647      - avoid "_d" constructs in PARAMETER declarations
2648      - avoid interrupting lines by comment lines
2649    o Use cluster local disks for purely local I/O
2650      vs. globally visible disks needed for ctrl stuff
2651      (merged from ecco-branch)
2652      - new active_file_loc... and mdsio_..._loc routines
2653      - affected packages: autodiff, ctrl, grdchk, mdsio
2654    
2655    checkpoint51c_post
2656    o introducing integer flag debugLevel
2657      - debLevZero: suppress all output
2658      - debLevA: standard
2659      - debLevB: equivalent to current debugMode=.TRUE.
2660    o introducing pathname variable mdsioLocalDir for mdsio
2661      that can be specified at runtime
2662      (relevant for cluster I/O to local disk)
2663    `
2664    >>>checkpoint51b_post
2665    adjoint of ptracers
2666    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
2667    o extended state in checkpoint_lev?, etc.
2668    o alternative ctrl/cost with tr1 or ptracer
2669    o new comlev1_bibj_ptracers
2670    o new ptracers.flow
2671    o made ptracers_forcing same as external_forcing_s
2672    o added verification for adjoint with ptracers
2673      - adm. grdchk fail so far
2674      - tlm. grdchk OK
2675      - checked tapelev/comlev recomputations: OK
2676    <<<checkpoint51b_pre
2677    
2678    checkpoint51a_post
2679    o added code for biogeochemistry package
2680      - new pkgs: dic, gchem
2681      - new subroutine in ptracers
2682    o modify code for biogeo packages
2683      - in model/src and pkg/ptracers
2684    
2685    checkpoint51
2686    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
2687      - autodiff, ctrl, exf, grdchk, seaice
2688      kept separate packages
2689      - cost, ecco, obcs
2690    o updating verification/internal_wave, verification/lab_sea
2691      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
2692    
2693    checkpoint50i_post
2694    o Preparing next differentiable checkpoint and sync
2695      of MAIN vs. ecco-branch
2696      - 1st step: this one is differentiable
2697      - 2nd step: next(! not this) checkpoint will have updated packages
2698                  from ecco-branch)
2699    
2700    checkpoint50h_post
2701    o new package "land": provide surface BC for AIM.
2702    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
2703    o AIM: use true log-P extrapolation for near surface temp (= as in
2704        F.Molteni paper) ; update aim.5l_cs output.
2705    o New variable in PARM03 for more flexible pickups
2706    o somewhat cleaned package initialisation sequence for
2707      ctrl/ cost/ ecco/ in packages_... routines
2708    
2709    checkpoint50g_post
2710    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
2711      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
2712      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
2713        made the default because of faster convergence than ADI
2714    
2715    checkpoint50f_post
2716    o exf totally restructured
2717      - replaced all exf_set_ routines by one generic exf_set_gen.F
2718        and made sure it's still differentiable
2719      - split exf_getffields.F into new exf_bulkformulae.F
2720      - exf_inscal_/exf_outscal_ suffixes consistent with field names
2721      - updated adjoint/makefile and relevant verif. accordingly
2722    
2723    checkpoint50f_pre
2724     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
2725          + change Evap over land. (update aim.5l_cs output)
2726     o added missing .cvsignores and made uniform across expts
2727     o changed configuration of tidal_basin_2d expt
2728     o added pkg/debug functions for tracing code in fatal crashes
2729     o tidied pkg/monitor to use MONITOR_OPTIONS.h
2730     o new fn in pkg/monitor to stop model if solution grows too big
2731     o removed lots of single quotes from comments
2732    
2733    checkpoint50e_post
2734    o make KPP work with PTRACERS
2735     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
2736       nearly a copy of kpp_transport_s
2737     - there is no analogue to SurfaceTendencyS, so I have to use
2738       gPtr(of the surface layer) instead
2739    o add a new platform SunFire+mpi (SunFire 15000) to genmake
2740    checkpoint50e_pre
2741    
2742    checkpoint50d_post
2743    o change kpp output from multiple-record state files to single-record state
2744      files analogous to write_state.F
2745    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
2746      analogous to the cg2d-related output.
2747    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
2748      so that writing to internal file fn (with length 512) fails.
2749    checkpoint50d_pre
2750    
2751    checkpoint50c_post
2752    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
2753    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
2754    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
2755    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
2756    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
2757    
2758    checkpoint50c_pre
2759    Merging from release1_p13:
2760    o bug fix for pkg/seaice dynamic solver
2761    o Added SEAICE_initialHEFF to pkg/seaice
2762    
2763    checkpoint50b_post
2764    o store u*,v* in gU,V instead of in guNm1,gvNm1
2765    o in order to put the momForcing out of the Adams-Bashforth:
2766      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
2767      to timestep.F
2768    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
2769    o re-generate output for highly sensitive test-exp:
2770       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
2771    
2772    checkpoint50b_pre
2773    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
2774    o corrected CPP option mismatch in exf_Bulk... functions for case
2775      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
2776    
2777    checkpoint50a_post
2778    o Bug fix for merging between c50 and KPP.
2779      ikey was passed from thermodynamics to kpp_calc via
2780      common block rather than being recomputed in kpp_calc,
2781      in contradiction with new key itdkey.
2782      New key ikppkey created, and tamc.h headers updated.
2783    
2784    checkpoint50
2785    - 2nd step of merge with ecco-branch:
2786      merge changes in ecco-branch back into main trunk
2787    - bug fix in find_alpha
2788    - more storing in gmredi_calc_tensor.F, kpp_routines.F
2789    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
2790    - merged some sliced AD support routines
2791    
2792    checkpoint49
2793    merged from ecco-branch:
2794    o exf:
2795      - Enable initialisation of forcing fields to constant
2796        (runtime) values.
2797      - in exf_getffields.F
2798        Reduce i-/j-loop to interior domain, discarding overlaps.
2799        That also fixes wrong TAF-key computations for key_1, key_2
2800        with bulf formulae.
2801      - exf_init.F modify #ifdef for exf_init_evap
2802      - exf_getffieldrec.F, ctrl_getrec.F
2803        The following INT-usages are not safe:
2804          fldsecs  = int(fldsecs/fldperiod)*fldperiod
2805          fldcount = int(fldsecs/fldperiod) + 1
2806        and were modified.
2807    o autodiff: checkpoint_lev...
2808      - updated storing for bulk formulae (some arrays were missing)
2809      - added state for seaice package
2810      - synchronized with main branch
2811    o DIVA:
2812      Modif.s in
2813      - the_main_loop.F
2814      - the_model_main.F
2815      and added cost_final_restore.F cost_final_store.F
2816      o With these changes, it is possible to fully separate
2817        the first forward run to compute the cost function (mdthe_main_loop)
2818        and adjoint runs over individual DIVA intervals (adthe_main_loop)
2819        into separate model executions.
2820        This enables better tuning of DIVA to given queue sizes.
2821      o Loss of cost function value in consecutive DIVA runs is
2822        fixed by storing to 'costfinal' file.
2823      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
2824        beginning/end of adjoint integration is accounted for.
2825      The current changes apply to TAF-1.4.26.
2826      TAF has one remaining bug, requiring one manual change
2827      (see MITgcm manual).
2828    o cal: synchronized between MAIN and ecco-branch
2829    
2830    checkpoint48i_post
2831    o Changes to restore differentiability of code w.r.t. previous tag
2832      (mostly adding new routines to make list and replacing
2833      pressure by totPhiHyd).
2834    o Updated and merged grdchk package
2835      - has both ADM and TLM checks
2836      - works for single- and multi-proc.
2837      - output cleaned
2838      - worked successfully for parallel DIVA
2839    o genmake:
2840      - Adding -platform=SP4
2841      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
2842    o Modif. for DIVA:
2843      ctrl_unpack should not be called in intermediate DIVA interval.
2844      (similar thing would apply for active files such as
2845      tbar, sbar, psbar, which should not be reinitialised;
2846      only relevant for ecco-branch)
2847    
2848    checkpoint48h_post
2849    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
2850    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
2851    o Added SEAICE_initialHEFF to pkg/seaice
2852    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
2853    
2854    checkpoint48g_post
2855    --- EOS:
2856    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
2857      store total Potential in totPhyHyd for diagnostics & EOS.
2858    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
2859    --- Pressure/geopotential gradient:
2860    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
2861    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
2862      ( changes results of global_ocean_pressure )
2863    o NLFS + z-coord.: add eta*Rho' contribution.
2864    o accurate phiHyd when using interface-W at the middle between 2 centers
2865     ( changes results of ideal_2D_oce )
2866    o includes r* 2nd term in potential gradient.
2867    
2868    checkpoint48f_post
2869    Merging from release1_p12:
2870    o Modifications for using pkg/exf with pkg/seaice
2871      - improved description of the various forcing configurations
2872      - added basic radiation bulk formulae to pkg/exf
2873      - units/sign fix for evap computation in exf_getffields.F
2874      - updated verification/global_with_exf/results/output.txt
2875    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
2876      (SBO) core products, including oceanic mass, center-of-mass,
2877      angular, and bottom pressure (see pkg/sbo/README.sbo).
2878    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
2879      to avoid negative values in shallow regions.
2880      - updated verification/natl_box/results/output.txt
2881      - updated verification/lab_sea/results/output.txt
2882    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
2883    o Added useSingleCpuIO option (see PARAMS.h).
2884    o Updated useSingleCpuIO option in mdsio_writefield.F to
2885      work with multi-field files, e.g., for single-file pickup.
2886    o pkg/seaice:
2887      - bug fix in growth.F: QNET for no shortwave case
2888      - added HeffFile for specifying initial sea-ice thickness
2889      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
2890    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
2891      kpp_transport_t.F, forward_step.F, and the_main_loop.F
2892    o pkg/seaice:
2893      - adjoint-friendly modifications
2894      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
2895    
2896    checkpoint48e_post
2897    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
2898    o dynamics: change definition of computational domain & adapt mom_fluxform
2899      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
2900    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
2901        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
2902        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
2903        global_ocean.90x40x15 global_with_exf global_ocean_pressure
2904        inverted_barometer solid-body.cs-32x32x1
2905      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
2906    
2907    checkpoint48d_post
2908    o in preparation for r*:
2909     a) use pre-computed gradient of hydrostatic potential:
2910        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
2911     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
2912        => affects results of glob_oce_pressure (different truncation error)  
2913      update output.txt of ideal_2D_oce & global_ocean_pressure
2914    
2915    checkpoint48d_pre
2916    o in preparation for r*:
2917      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
2918      pass the 2 comp. of the grad. as arguments to momentum S/R.
2919      but for the moment, only used if it does not change the results.
2920    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
2921    
2922    checkpoint48c_post
2923    Modifications in treatment of initial flux forcing controls
2924    to avoid extra storing of flux fields.
2925    
2926    checkpoint48c_pre
2927    o Added tidal_basin_2d experiment (currently 1D!)
2928    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2929    
2930    checkpoint48b_post
2931    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2932     (modification to pressure gradient not yet implemented)
2933    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2934      (for U & V) that are used for vertical advection of momentum.
2935    
2936    checkpoint48a_post
2937    o In preparation for r*, use temp. array to compute vertical transport
2938       in flux-form momentum pkg. => change results of few test-exp.
2939      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2940                        lab_sea, natl_box & plume_on_slope
2941    
2942    checkpoint48
2943    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2944    
2945    checkpoint47j_post
2946    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2947    o moved adexch from forward_step to addummy_in_stepping
2948    o added exch in ctrl_map_...
2949    o aveFreq.=0. at end of cost_final to avoid overwrite in
2950      reverse checkpointing loop
2951    o Yet more changes in gmredi:
2952      * adgmredi_calc_tensor
2953        avoiding all recomputation of gmredi_slope_limit
2954      * adgmredi_x/y/rtransport
2955        added flag for excessive storing to avoid recomp. of
2956        u/v/rtans, dTdx/y/z
2957        -> this is not really necessary and very memory-consuming
2958      * adgmredi_slope_psi:
2959        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2960      * gmredi_slope_limit
2961        re-activated full calculation of taperfct for case 'ac02'
2962    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2963    
2964    checkpoint47i_post
2965    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2966    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2967      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2968    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2969    o gmredi: fix few bugs.
2970    
2971    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2972    This will be a good checkpoint to plug into the ecco-branch.
2973    o few modif.'s to get latest version adjointed
2974      (mainly kick out code in ini_linear_phisurf)
2975    o modif's to run adjoint with exactConserv
2976    o case GM_BOLUS_ADVEC should be cleaned
2977      S/R gmredi_slope_psi should be cleaned
2978    o verification/carbon now has exactConserv=.TRUE.
2979    
2980    checkpoint47g_post
2981    o time-average AIM output: becomes independent from statvars time-average
2982      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2983    o After TAF bug fix:
2984      Tested adjoint of gmredi package.
2985      Tests were done with checkpoint47 rather than with latest
2986      checkpoint47f_post since the latter is broken for the adjoint
2987      verification/carbon/ contains both ADM and TLM gradient checks.
2988    Here they are, before they get changed/lost/stolen.
2989    Mostly modif.'s to fix numerical sensitivities.
2990    Gradient checks OK for
2991    - GM_taper_scheme:
2992      * clipping
2993      * ac02
2994      * linear
2995      * glw91
2996      * dm95
2997      * ldd97
2998    - GMREDI_OPTIONS:
2999      * GM_VISBECK_VARIABLE_K
3000      * GM_NON_UNITY_DIAGONAL
3001      * GM_EXTRA_DIAGONAL
3002      * GM_BOLUS_ADVEC
3003    in conjunction with data.gmredi parameters to be checked in
3004    in a few minutes under verification/carbon/code/
3005    
3006    checkpoint47f_post
3007    Merging from release1_p10:
3008    o modifications for using pkg/exf with pkg/seaice
3009      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3010        and SEAICE_EXTERNAL_FLUXES
3011      - pkg/exf CPP options EXF_READ_EVAP and
3012        EXF_NO_BULK_COMPUTATIONS
3013      - usage examples are Experiments 8 and 9 in
3014        verification/lab_sea/README
3015      - verification/lab_sea default experiment now uses
3016        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3017    
3018    checkpoint47e_post
3019    o created a tag prior to creating a branch
3020    
3021    checkpoint47d_post
3022    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3023      at the bottom boundary had an erroneous half slip boundary condition
3024    o added bottom drag and no slip boundary condition capabilities to
3025      oceanic pressure coordinates code
3026    o added new verification experiment global_ocean_pressure, this experiment is
3027      also described in the tutorial section of the manual
3028    checkpoint47d_pre
3029    
3030    checkpoint47c_post
3031    o Added a verification experiment for a global cubed-sphere ocean run
3032      -  verification/global_ocean.cubed32x32x30
3033      -  uses pkg/therm_seaice and pkg/bulk_forcing
3034    
3035    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3036    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3037      when using P-coordinate; only implemented for atmospheric config.
3038    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3039      NOTES: requires option NONLIN_FRSURF to be "#define".
3040    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3041    
3042    checkpoint47b_post
3043    Merging from release1_p9:
3044    o pkg/seaice
3045      - removed GOTO's and added taf directives
3046      - double precision constants to reduce the g77 (Linux)
3047        to F77 (SGI) differences reported in release1_p8
3048    o tools/genmake
3049      - added SGI options
3050    o verification/testscript
3051      - updated to that of checkpoint47a_post
3052    o verification/global_ocean.90x40x15/input/eedata
3053      - modified for SGI f77 compatibility
3054    o verification/lab_sea
3055      - added description of sea-ice model
3056      - added missing matlab routines
3057      - added test of thermodynamics parallelization
3058    
3059    checkpoint47a_post
3060    o new pkg: aim_v23
3061     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3062       for now, keep the same surface forcing as before.
3063     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3064     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3065     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3066    o add diagnostic of surface correction term in monitor output
3067    
3068    o bulk_force and therm_seaice
3069    - Two packages:  bulk_force (Bulk forcing)
3070      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3071    - Earlier integration from Stephaine Dutkiewicz
3072      and Patrick Heimbach.
3073    - Two ifdef statements for compile time,
3074       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3075    
3076    checkpoint47
3077    differentiable version of checkpoint46n_post
3078    o bug fix in quasihydrostaticterms
3079    o * "clean" adjoint code (in terms of extensive recomputations)
3080        can now be obtained for all GMREDI options (i.e. for
3081        - GM_VISBECK_VARIABLE_K
3082        - GM_NON_UNITY_DIAGONAL
3083        - GM_EXTRA_DIAGONAL
3084        - GM_BOLUS_ADVEC )
3085      * However, wrong gradient check problem remains unsolved.
3086      * New CPP options have been introduced for different
3087        tapering schemes
3088    o external_fields_load now part of differentiation list
3089    o pressure needs multiple storing;
3090      would be nice to have store_pressure at beginning or
3091      end of forward_step, e.g. by having phiHyd global (5-dim.)
3092      (NB: pressure is needed for certain cases in find_rho,
3093      which is also invoked through convective_adjustment).
3094    o recomputations in find_rho for cases
3095     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3096    o #define ATMOSPHERIC_LOADING should be differentiable
3097    o ini_forcing shifted to begining of initialise_varia
3098    o Incorporating QNVS line search routines into MITgcm
3099      (this is separate code, and therefore not under pkg)
3100      lsopt/, optim/
3101    o Updated verification/carbon/
3102      - #define GM_VISBECK_VARIABLE_K
3103      - GM_taper_scheme    = 'ldd97'    
3104    
3105    checkpoint46n_post
3106    Merging from release1_p8:
3107    o verification/natl_box:
3108      updating new external_fields_load routine
3109    o New package: pkg/seaice
3110      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3111      The sea-ice code is based on Hibler (1979-1980).
3112      Two sea-ice dynamic solvers, ADI and LSR, are included.
3113      In addition to computing prognostic sea-ice variables and diagnosing
3114      the forcing/external data fields that drive the ocean model,
3115      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3116      The implied surface heat flux is then stored in variable
3117      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3118      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3119      non-local transport term.  Because this call precedes model
3120      thermodynamics, temperature under sea-ice may not be "exactly" at
3121      the freezing point by the time theta is dumped or time-averaged.
3122      N.B.: fairly large differences in accuracy occur across
3123            different platforms/compilers; comparison between
3124            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3125            generated output gives:
3126       T           S           U           V
3127      C D M    c        m  s        m  s        m  s        m  s
3128      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3129      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3130      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3131    
3132      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3133    o GAD:
3134      - generated new common blocks to account for call of
3135        same gad routines with differing traceridentities
3136        (needed to modify tracerIdentity indices in GAD.h)
3137      - generated separate common blocks for case useCubedSphereExchange
3138        (Department of Futurology)
3139      - parameter lists to gmredi_?transport: added tracerIdentity
3140      - added new key indices to tamc.h
3141    o external_fields_load:
3142      - added this routine to TAF list
3143      - needed to make some common blocks global and additional storing
3144        along the same lines as exf package (checkpoint_lev?_directives.h)
3145    o exf:
3146      updated external forcing package
3147      - bug fixes carried over from ecco-branch
3148        (missing OBCS_OPTIONS.h in two routines)
3149      - enable easy to use "no forcing".
3150      - added exf I/O for atmospheric loading
3151      - added exf I/O for runoff data
3152      - transfered scaling between exf <-> MITgcm to exf namelist
3153    o Adding new verification experiment global_with_exf.
3154      This verification experiment is almost identical to the
3155      global_ocean.90x40x15 experiment, except that it uses
3156      the exf (and cal) package instead of the
3157      external_fields_load routine (cf README file).
3158    
3159    checkpoint46m_post
3160    o modified testscript to return -- when there are no lines of "%MON" output
3161    o added new flag "quasiHydrostatic" for QH mode
3162      and new routine quasihydrostaticterms()
3163    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3164      New routine: mom_u_coriolis_nh()
3165    o fixed sign of non-hydrostatic metric terms in u and v equations.
3166      Depend on correct sign of gravitySign.
3167    o added work.pc* to .cvsignore in aim directories using ifc
3168    o introduced flag for controllin non-hydrostatic metric terms
3169    o removed gravitySign from PARM04
3170    o switched to g77/ifc from pgf77 in aim experiments
3171    
3172    checkpoint46l_post
3173    o made convective adjustment work with pressure coordinates:
3174     - changed the direction of k-loop in convective_adjustment.F for the
3175       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3176     - adjusted the reference pressure k-index in convective_adjustment.F
3177     - adjusted the convection condition in convect.F (in analogy to
3178       calc_ivdc.F)
3179     - convective_adjustment no longer computes anything on the halos
3180     - removed the warnings about negative salinity from find_rho.F and
3181       find_alpha.F; instead the new routine look_for_neg_salinity, called
3182       at the beginning of find_rho, find_alpha, and find_beta, does a
3183       check of the entire slice, if CPP-option
3184       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3185    checkpoint46l_pre
3186    
3187    checkpoint46k_post
3188    o fixed the verification/global_ocean.90x40x15 experiment:
3189     - new bathymetry (the world according to A., JMC, and M.)
3190     - new initial fields and forcing fields (*.bin files)
3191     - new POLY3.COEFFS (for the next release one should switch to a full
3192       equation of state: JMD95P or MDJWF)
3193     - fixed several errors and redundancies in the data file
3194     - experiment uses looped cells
3195     - added matlab directory with diagnostic scripts for plotting of output
3196    
3197    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3198     - read AIM physics parameters from a file (data.aimphys)
3199     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3200    
3201    checkpoint46j_post
3202    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3203    o move wVel computation at the end of the time step, in S/R integr_continuity
3204    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3205    o update timeave pkg for wVel diagnostic.
3206    checkpoint46j_pre
3207    
3208    checkpoint46i_post
3209    o Clean up AIM package (and keep the results unchanged):
3210      include CPP_OPTION and use IMPLICT NONE in all routines ;
3211      declare all the variables _RL ; use _d 0 for all numerical constants.
3212      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3213    
3214    checkpoint46h_post
3215    o cleaned up the use of rhoNil and rhoConst.
3216      - rhoNil should only appear in the LINEAR equation of state, everywhere
3217        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3218        and the dynamical equations are all divided by rhoConst
3219    o introduced new parameter rhoConstFresh, a reference density of fresh
3220      water, to remove the fresh water flux's dependence on rhoNil. The default
3221      value is 999.8 kg/m^3
3222    o cleanup up external_forcing.F and external_forcing_surf.F
3223      - can now be used by both OCEANIC and OCEANICP
3224    checkpoint46h_pre
3225    
3226     Added code to convert surface volume flux (fresh water) into
3227     a mass flux when using P coordinates in the ocean (OCEANICP).
3228     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3229    
3230    checkpoint46g_post
3231    o Include a new diagnostic variable phiHydLow for the ocean model
3232      - in z-coordinates, it is the bottom pressure anomaly
3233      - in p-coordinates, it is the sea surface elevation
3234      - in both cases, these variable have global drift, reflecting the mass
3235        drift in z-coordinates and the volume drift in p-coordinates
3236      - included time averaging for phiHydLow, be aware of the drift!
3237    o depth-dependent computation of Bo_surf for pressure coordinates
3238      in the ocean (buoyancyRelation='OCEANICP')
3239      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3240        Theta, Salinity, and Pressure in the parameter list. This routine is
3241        presently contained in find_rho.F. This routine does not give the
3242        correct density for 'POLY3', which would be a z-dependent reference
3243        density.
3244    o cleaned up find_rho
3245      - removed obsolete 'eqn' from the parameter list.
3246    o added two new verification experiments: gop and goz
3247      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3248    checkpoint46g_pre
3249    
3250    checkpoint46f_post
3251    o Enable tangent linear (forward mode) gradient checks:
3252      - extended active file handling to g_... files
3253      - added TANGENT_SIMULATION to theSimulationMode
3254      - extended grdchk package accordingly
3255    o added tangent linear setup in verification/carbon/code_ftl
3256    o added adjoint setup in verification/front_relax/code_ad
3257    
3258    checkpoint46e_post
3259    o Added new equation of state -> MDJWF
3260      - EOS of McDougall et al., 2002, JAOT, submitted
3261      - caveat: the equation of state is only valid for a smaller (more
3262        realistic?) range of values than JMD95P/Z and UNESCO
3263      - added masks to the calculation of pressure in store_pressure
3264      - added more check values for density in check_eos (ini_eos.F), some of
3265        the old check values are out of the range of the MDJWF-eos, so don't
3266        expect perfect matches for those
3267    checkpoint46e_pre
3268    
3269    checkpoint46d_post
3270    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3271      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3272      case of pressure coordinates. eosType='JMD95Z' in
3273      combination with buoyancyRelation='OCEANICP' now causes an error.
3274    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3275      in find_alpha/beta.
3276    checkpoint46d_pre
3277    
3278    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3279      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3280    
3281    checkpoint46c_post
3282    o Changes necessary for ocean in p-coordinates
3283     -  Added new buoyancy relation = 'OCEANICP'
3284     -  Added new parameters = gravitySign (this used to be contained inside
3285        the factor dRdZ which I added when we first switched to R coordinates).
3286     X GM/Redi is not compatible (yet)
3287     X bottom drag and no-slip need to be debugged.
3288    checkpoint46c_pre
3289    
3290    checkpoint46b_post
3291    o Added new equation of state -> JMD95Z and JMD95P
3292      - EOS of Jackett and McDougall, 1995, JAOT
3293      - moved all EOS parameters into EOS.h
3294      - new routines ini_eos.F, store_pressure.F
3295    o Added UNESCO EOS, but not recommended because it requires
3296      in-situ temperature (see JMD95)
3297    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3298      unesco.f to be used with POLY3
3299    checkpoint46b_pre
3300    
3301    checkpoint46a_post
3302    o Added (atmospheric) pressure loading
3303      - new field in FFIELDS.h, etc...
3304      - new cpp flag ATMOSPHERIC_LOADING
3305    o Changed hFacC to _hFacC in calc_phi_hyd.F
3306    o Added SHORTWAVE_HEATING to some files for consistency
3307    checkpoint46a_pre
3308    
3309    checkpoint46
3310    further merges from release1_p5
3311    o new ctrl package
3312      - adopted from ECCO environment to enable optimization
3313      - added Eliassen Palm fluxes to controls
3314    o added Eliassen Palm flux controls to gradient check package
3315    o cost package
3316      - Compatible with new ctrl package
3317      - added Eliassen Palm cost hooks
3318      - modif's of existing cost functions
3319    o Adjoint-related bug fixes in kpp:
3320      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3321      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3322    o autodiff package
3323      - flow directives:
3324        + new for S/R do_the_model_io
3325        + enhanced for S/R checkpoint
3326        + new gmredi.flow
3327      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3328        disable adcommon.h/g_common.h by default.
3329      - fixed problem for adjoint of global_max
3330    o modified verification/carbon/
3331    o New setup for adjoint of global_ocean
3332    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3333    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3334    o incorporated hooks for sponge layer code (external_forcing.F)
3335    
3336    checkpoint45d_post
3337    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3338  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S  o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3339    (affects plume_on_slope "cg2d" output)    (affects plume_on_slope "cg2d" output)
3340    o add new parameter deltaTfreesurf for free-surface time stepping
3341    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3342  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B  o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3343  o change phiMin in exp1 (to agree with documentation)  o change phiMin in exp1 (to agree with documentation)
3344  o add new flags:  o add new flags:

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