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revision 1.10 by cnh, Wed Jul 8 15:40:09 1998 UTC revision 1.626 by edhill, Fri Mar 10 05:50:22 2006 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 various mnc cleanups and improvements:
8      + shrink lookup tables by factor of ~4
9      + better error reporting when running out of lookup space
10      + able to handle longer path/file names (up to 500 chars)
11    o adjoint:
12      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
13      - TBD: "hidden" mom_vecinv recomp. in dynamics
14    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
15     (allow to differentiate between forcing components using new integer flags:
16      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
17     and add new flag to put Dissipation tendency out of Adams-Bashforth.
18    o ecco
19      - enable trend removal from SSH anomaly obs.
20    o adjoint
21      - a fix for PmEpR when #undef EXACT_CONSERV
22      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
23      - try to fix "hidden" recomp. in forward_step for NLFS
24        (NLFS seems broken sometimes after I checked it in)
25    o seaice:
26     - add c-grid version of the dynamic solver:
27       + three new routines that are the c-grid substitute lsr, dynsolver
28         and ostres
29       + put a few fields that were local to dynsolver into global common
30         blocks, so that I can move the computation of stresses etc into
31         seaice_lsr (saves coding but may break the adjoint).
32     - replace more hardwired parameters by runtime parameters
33     - add ice masks that mask the rhs of the implicit solvers where there
34       is no ice (commented out in seaice_dynsolver, because i am not sure
35       if this works properly), eventually this should replace the clipping
36       of ice velocities in seaice_dynsolver to +/-40cm/s.
37    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
38      include it only where its needed
39    o move balancing of fluxes before the call of external_forcing_surf
40    o seaice:
41      - correct units of turning angles (now they are really in degrees)
42      - move computation of GWATX/Y out of main routine into dynsolver
43      - initialize GWATX/Y in seaice_init
44    o Apply mask on Fresh-Water flux (needed for SSH forcing).
45      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
46    o seaice: add runtime flags for turning angles (default to zero)
47    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
48      and trend from exf forcing and ctrl control adjustments
49    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
50      (since checkpoint57x_post)
51    o change the default rotation period to 86164.s = the Earth rotation
52    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
53      and based on a reference stratification. Tested within hs94.cs-32x32x5.
54    o seaice advection: add code for choosing between the default (2nd order
55      central differences) and multiDim advection schemes provided by
56      pkg/generic_advdiff
57    o seaice:
58      - removed all references to SEAICE_GRID.h fields from
59        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
60        (cubed-sphere configuration will change a little)
61      - grid computations in seaice_init are obsolete now.
62      - cleaned up code a little so that is easier to read (hopefully).
63      - added new (better?) discretizations of default advection and diffusion
64        (turn on with SEAICEuseFluxForm)
65      - replace 1 in 3d global fields by kSurface in growth.F
66      
67    checkpoint58a_post
68    o seaice:
69      - bug fix in advect.F
70    o shelfice:
71      - separate shelfice load anomaly from pload (breaks with time
72        dependent forcing), => introduce constant field shelficeLoadAnomaly.
73        Its default is 0., but it may be computed more cleverly from (unknown)
74        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
75        done offline. A good approximation of the pressure load anomaly is
76        necessary to avoid large initial adjustment processes underneath
77        deep-reaching shelfice.
78      - small fix in ISOMIP shelfice_thermodynamics
79      - add more sophisticated thermodynamics of Hellmer (1989), this is
80        now the default
81      - give a few constants more intuitive names
82    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
83      if bulk formulae are used in long integration (especially EmPmR). Turn
84      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
85      if balancePrintMean, the imbalance that is substracted is printed to
86      STDOUT.
87    o fix bug (typo) in obcs_apply_eta.F
88    o add a new package shelfice which enables us to model the circulation
89      underneath shelf-ice with draughts of hundreds of meters.
90     - works
91     - to do: + include improved thermodynamics
92              + check whether kSurfC (from model/inc/SURFACE.h) can be used
93                instead of new field kTopC
94              + can we use topoFile, Ro_surf and existing code in ini_depth.F
95                instead of new field R_shelfIce and new code in ini_depth.F
96                and ini_mask_etc.F?
97              + adjust vertical mixing schemes?
98    o seaice pkg:
99     - add a cpp-flag to include a simple formula for a salinity dependent
100       freezing point of sea water at the surface
101     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
102       meridional stresses are now different (and hopefully correct)
103    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
104       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
105       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
106    o pkg/diagnostics: add options and parameters for regional-statistics
107       diagnostics ; define regions by reading a region-mask from a file
108       (might add other options later)
109    o pkg/bulk_force:
110     - add option and parameters to use AIM surface-flux formulae.
111     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
112       others forcing fields (defined in PARM05, parameter file "data") are loaded
113       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
114     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
115     - use the right EXCH call for uwind,vwind (to work on CS-grid).
116     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
117       and parameters (note: calcWindStress replaces .NOT.readwindstress).
118     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
119    
120    checkpoint58
121    o add "--embed-source" option to genmake2 which, when the supporting
122      tools can be compiled (as determined by genmake2) will turn on the
123      embed_files package which then embeds the entire MITgcm source code
124      (*.[fFhc] + Makefile) used for the build within the executable
125      - requested by CNH but off by default
126      - adds a paltry <9MB to the mitgcmuv executable in most cases
127      - only writes the output when useEMBEDSRC in eedata is true
128    o clean up 3-dim. relaxation codes:
129      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
130      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
131      * Thanks to Tom Haine for testing!
132    
133    checkpoint57z_post
134    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
135      affects output (@ truncation level) of exp. plume_on_slope ; updated.
136    o fix the pickup behavior for obcs in combination with ptracers
137    o fix a bug in ptracers_external_fields_load
138    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
139      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
140    o transfered surface NH pressure to eta field (if exactConserv).
141    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
142         and update lab_sea output.txt file.
143    o completing 3-dim. relaxation code: additional term
144         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
145      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
146      * At compile time, in "EXF_OPTIONS.h" set
147          #define  ALLOW_CLIMTEMP_RELAXATION
148          #define  ALLOW_CLIMSALT_RELAXATION
149      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
150          tauThetaClimRelax3Dim = 15552000.0,
151          tauSaltClimRelax3Dim  = 15552000.0,
152      * 3 cases:
153          1) Use a constant-in-time 3-dim. field
154          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
155          3) Real-time relax. to time-evolving prescribed field
156    o Adding Laplacian-type smoothness constraint on
157      initial and boundary (forcing) controls (ic, bc)
158      * enable at compile-time via
159        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
160      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
161      * Absolute scale somewhat unclear so far
162      * no area weighting was included since no other cost term does so far
163    
164    checkpoint57y_post
165    First step for a NLFS adjoint
166    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
167    o new init. routines for calc_r_star, calc_surf_dr
168    o still need to deal with ini_masks_etc
169    o testreport seemed happy
170    checkpoint57y_pre
171    
172    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
173    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
174    o add new offset feature to offline pkg (plus minor cleanup)
175    o cfc fixes for final year of integration
176    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
177      be in GCHEM_OPTIONS).
178    
179    checkpoint57x_post
180    o fix testreport Pb in multiple test experiment.
181    o cleanup our namelist syntax in verification:
182      - make it more F95 standards compliant (some work still needed)
183      - allows the vast majority of our tests to work with gfortran
184    o Non-Hydrostatic:
185     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
186     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
187    o Allow to apply AB on T,S rather than on AB(gT,gS):
188     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
189     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
190       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
191     - need a "clever" read_pickup to restart from the other AB formulation
192    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
193    o remove some unused variables (reduces number of compiler warnings)
194    o adjoint
195      * Disable useVariableViscosity for adjoint for time being
196        (there are a number of extensive recomputations)
197      * Initialize certain variables needed for adjoint
198    
199    checkpoint57w_post
200    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
201                 fix the singleCpuIO RS version of MDSWRITEFIELD
202       and add a WARNING if using globalFiles=T with multi-processors.
203    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
204      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
205    o tracer advection scheme:
206      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
207       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
208       was not very convenient).
209      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
210       (further tests needed for the implicit DST & Flux-Limiter schemes).
211    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
212      and sRef for convenience, handy, when you want to initialize
213      ptracers in a large domain with a constant non-zero value. Also,
214      untangle ptracers_init.F a little.
215    
216    checkpoint57v_post
217    o change dome exp. to use variable viscosity in side-drag terms.
218    o remove all the files from the cfc_offline test since they are now
219      incorporated into tutorial_cfc_offline which has been producing
220      identical results for a few days of testing
221    o add new parameter: sideDragFactor to enable half-slip-side BC
222      and change side-drag S/R to use viscosity from mom_calc_visc
223      (can switch back by setting sideDragFactor=0.); affects results at
224      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
225       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
226    o vorticity & strain are now computed without masking, to account for
227      no-slip-side BC in variable viscosity calculation ; mask is applied
228      anyway later on, before computing advection/coriolis terms.
229    o modify exp4 to test new obcs support for reading from external files
230      and for passive tracers
231    o fix behavior of ptracers_monitor when monitor output is written to a
232      netcdf-file; still not independent of monitor.F (writes in the same
233      file).
234    o change default value of tRef (put a uniform, meaningful value for ocean
235      & atmos) and initialize sRef (was missing, as Martin mentioned).
236    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
237      to be proportional to enstrophy dissipation length.  Thus,
238       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
239      This is now consistent with Smagorinsky and with the manual.
240    
241    checkpoint57u_post
242    o OBCS and PTRACERS: add open boundary support for passive tracers
243      - either use homogenous (pseudo) v.Neumann conditions or prescribe
244        OB-values from file; this is not different from the way theta and salinity
245        are treated
246      - however, Orlanski-radiation conditions are not supported, and the model
247        will stop if you use pTracers and Orlanski at the same time.
248      - beefed up the rountine obcs_external_fields_load: now only those open
249        boundary values are overwritten with values from files for which there
250        are really files, otherwise the OB-fields remain untouched. This makes
251        it possible to use different OBs at different ends of the domain (as
252        with EXF)
253    o reduce number of exch calls in shap_filt (s2).
254    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
255      truncation level) 4/5 MLAdjust test results (11&12 digits match).
256    
257    checkpoint57t_post
258    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
259    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
260      same truncation, independent of the face number: affects affects several
261      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
262    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
263      note that biharmonic viscosity + no-slip was not tested in any experiment.
264    o fix bug in non-linear free-surf side-drag ; generate new output for
265      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
266    o make mnc honor the writeBinaryPrec flag for most kinds of output
267    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
268    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
269      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
270    o add brackets in multi-terms sum to get same truncation, independent of
271      the face number (manage to get exactly same value of gU,gV at the cs-edge)
272      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
273    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
274      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
275      a maximum grid-scale Reynolds number.  Also, changes all length calculations
276      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
277      Suggested values of viscosity parameters found in mom_calc_visc.
278      Many new viscosity diagnostics available.
279    
280    checkpoint57s_post
281    o Add clearing-house for viscosity calculations, mom_calc_visc and
282      correct numerous bugs in LeithD and Smagorinsky discretizations.  
283      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
284      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
285      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
286      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
287      The Strain-Tension form is now called with useStrainTensonVisc=.true.
288      ViscAhStrain and viscAhTension are now retired.
289    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
290    o In response to JMC's bug report, genmake2 now ignores any soft-links
291      that it finds in the *current* directory when searching for files.
292      Soft-links found in any other source directories will still work as
293      they did before.
294    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
295      a C routine to unlimit the stack size
296    o mnc-ify pkg/aim snapshot vars
297    o mnc-ify pkg/land as requested by Daniel
298    o various changes to mnc including:
299      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
300      - output can now be grouped so that all files within a group
301          change the ITER portion of their names in lock-step together
302      - can now read ("global") PER-FACE (in addition to PER-TILE) files
303          and works with both EXCH1 and EXCH2 (but needs more testing)
304      - writing works for all verification test cases w/ g77 on Linux
305    
306    checkpoint57r_post
307    o make MNC variable initialization happen earlier
308    o add diagnostics for (almost) each term of the momentum Eq.
309    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
310    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
311    o remove MINIMAL_TAVE_OUTPUT option ;
312      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
313    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
314      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
315    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
316    o add time-dependent SST, SSS control
317    o cost terms in ecco/ modularized (new cost_generic.F)
318    o cost_averages routines are modularized (new cost_averagesgeneric.F)
319    o new infrastructure for seaice model vs. obs misfits in seaice/
320      * driver from the_main_loop.F is seaice_cost_driver.F
321      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
322      * gradient check in Exp. 6a of natl_box_adjoint/
323    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
324      (see README file)
325    
326    checkpoint57q_post
327    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
328    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
329      - bug was reported by Jean-Michel and Ian Fenty
330    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
331      update exp. cpl_aim+ocn output.
332    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
333      Needed for high-res. runs with large global files
334      to be able to limit tapelev size
335    o Changed some tests for adjoint:
336      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
337      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
338      * global_ocean.90x40x15/ back to default 3-level checkpointing
339    o Modifications to enable scripted COMMON to MODULE conversion
340      * verification/OpenAD/code/ has necessary scripts and description;
341      * converts, compiles and runs successfully;
342    
343    checkpoint57p_post
344    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
345    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
346      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
347    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
348    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
349      (was already the case for dissipation with mom_vecinv,
350       and also the case for grad.PhiHyd when staggered-timeStep)
351      This will allow to put dissipation out-off the AB time-stepping.
352     Unfortunately, affects truncation error. Update output of exp. that "fails"
353      (cg2d matching number) and leave the others for later: front_relax(10),
354      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
355      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
356    
357    checkpoint57o_post
358    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
359      (2) its ready to be documented during the 20050801 DocFest
360    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
361      for ideal_2D_oce and lab_sea on linux_ia32_g77
362    o set to #undef CTRL_SET_OLD_MAXCVARS_30
363      in global1x1_tot/code_seaice_adj to access indices 32, 33
364      (worth another tag)
365    
366    checkpoint57n_post
367    o adding precip control xx_precip 32
368    o adding swflux control xx_swflux 33
369    o Replacing 10 forcing penalty cost routines by 1 generic.
370    o Implementing partitioning in time-mean and variable adjustment
371      for atmos. state.
372    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
373    o in natl_box_adjoint:
374      * updated exp 1 to 10
375        (but does not have time-mean vs. variable split results yet)
376    o updated global1x1/*_seaice_adj/
377      to incorporate latest changes
378    o enable useSingleCpuIO for mdsio vector routines
379      (applies in particular to tapelev I/O)
380    o removed inefficient K-loop in all active_file*control*.F
381    
382    checkpoint57m_post
383    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
384      and advect_cs (use EXCH-2 and standard cs-32 grid files).
385    o pkg/exch2: filling of face-corner halo regions is optional
386      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
387    
388    checkpoint57l_post
389     tag before updating tutorials (pre-release-2)
390    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
391       for output and interpolation of input fields onto model grid)
392    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
393       Affects results of exp. rotating_tank ; update output.txt.
394    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
395          and taking the square quantity and/or using a fraction-weight field.
396    o fix aim_diagnostics_init.F mate numbers.
397    o add mnc output capability to diagnostics/diagstat and update
398      our cvsignore files for the ACSII output generated
399    
400    checkpoint57k_post
401    o lab_sea now uses diagnostics package and provides a suite of
402      new EXF diagnostics output.
403    
404    checkpoint57j_post
405    o exf
406      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
407        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
408        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
409      * extended diagnostics output
410        - now includes all EXF variables
411        - hs, hl moved to common block
412        - separate S/R for diagnostics, called after ctrl vector is added
413        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
414        - EXFqnet contains true Qnet (i.e. includes qsw)
415      * updated verif. lab_sea, global_with_exf
416      * Rearranging hflux (exf_mapfields -> exf_getforcing)
417        to ensure that diagnostics sees a true EXFqnet
418    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
419    o diagnostics pkg: change pointers so that 1 diagnostic can be used
420      several times with different frequencies.
421    o mnc-ify the thsice package as requested by Daniel Enderton
422      - the monitor--MNC output needs work
423      - many attributes need to be added (most are currently blank)
424    o mnc-ify theaim_v23 package as requested by Daniel Enderton
425      - many attributes need to be added (most are currently blank)
426    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
427    o add Sadourny like discretization to the 4th.O vorticity advection scheme
428    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
429      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
430         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
431    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
432     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
433    
434    checkpoint57i_post
435    o Diagnostics package was changed: diagnostic allocation is now deactivated
436      by setting an empty file name in the namelist (used to be by setting 0 frequency)
437    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
438      add 1rst Order upwind vertical Shear.
439    o add a quick fix for A/B checkpointing in OFFLINE mode
440    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
441      end-run around the C/Fortran linking horror in eesup/src/timers.F
442    o added pkg/runclock: allows user to terminate run based on wall clock
443    o added non-hydrostatic scaling parameter: nh_am2
444    o pkg/my82: futile attempt to make results compiler-independent by adding
445      some "_d 0", etc. no effect.
446    o for mnc output, fill the 'T' coordinate var with myTime and create a
447      separate 'iter' variable for iteration count
448    o pkg/diagnostics:
449      add new capability: output of Global/Regional & per-level statistics ;
450      tested against monitor output (including land & thSIce) on various exp.
451    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
452    
453    checkpoint57h_done
454      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
455      data.diagnostics, data.gchem, data.ptracers) is done.
456    
457    o pkg/diagnostics: prepare for Global/Regional statistics.
458      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
459    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
460      and rename it: DIFFERENT_MULTIPLE
461    
462    checkpoint57h_post
463    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
464    o pkg/diagnostics: change output frequency, now in seconds (instead
465      of Nb of iterations). This requires to change data.diagnostics.
466    checkpoint57h_pre
467    
468    o in mnc, let the user create the output dir if both mnc_outdir_date
469      and mnc_outdir_num are false
470    o add fflags() to pkg/diagnostics which allows one to specify, on a
471      per-file basis, the file precision [default behavior is unchanged]
472    o added diagnostics to pkg/kpp, including computation of mixed layer
473      depth based on a temperature/density criterion
474    o updated verification/natl_box to test the new pkg/kpp diagnostics
475    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
476    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
477    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
478      not mnc -- this mistake was found by JMC and is now corrected
479    
480    checkpoint57g_post
481    o add Adams-Bashforth 3rd Order time stepping:
482      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
483      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
484    checkpoint57g_pre
485    
486    o make lambda[Theta,Salt]ClimRelax spatially varying
487      (default remains spatially uniform constant based on tau)
488    o added new control variables
489      * init. uVel, vVel, etanN
490      * lambda[Theta,Salt]ClimRelax
491    o separate masks used for ctrl_pack/unpack 'from write_grid' output
492      (suggested by G. Forget)
493    
494    checkpoint57f_post
495    o add parameter "baseTime" = model base time = time at iteration zero
496      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
497      account for baseTime shift
498    o move Coriolis arrays from PARAMS.h to GRID.h
499    checkpoint57f_pre
500    
501    o mnc-ifying the seaice package
502    o introduced an alternative length scale calculation for use in the limiting
503      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
504    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
505    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
506      as well as grad(vort3).  Made it compatible with both approximate form
507      for the cubed sphere and full form of these gradients.  Added flag
508      useFullLeith to select between approximate and full form.  
509    o add "d0" in getcon.F to reduce differences between compilers/platforms
510      update output.txt of exp. fizhi-gridalt-hs
511    o change port_rand funtion to allow to set the seed.
512    o fix obscure MNC bug involving conversion between reals and integers
513      - it caused no problems with certain (eg. gcc, ifc) compilers but the
514        new version is now more standards-compliant
515    o adjoint-related modifications
516      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
517      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
518      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
519    
520    checkpoint57e_post
521    o Adding eddy stress controls a la Ferreira et al.
522    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
523    
524    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
525      update output.txt of exp. fizhi-gridalt-hs
526    o add more "Z" dimensions and associated coordinate vars to MNC
527    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
528    o parameter calendarDumps: when set, approximate months (30-31 days) and years
529      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
530      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
531      months and years.  Requires pkg/cal.
532    o diagnostics: add pickup functionality
533      - off by default for backwards compatibility
534      - current version only uses MDSIO -- MNC will be added
535    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
536    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
537    
538    checkpoint57d_post
539    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
540    o modify verification/ideal_2D_oce so that it tests the creation of mnc
541      output from the diagnostics package
542    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
543    o make genmake2 more portable by using ".$FS" instead of ".f" for more
544      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
545    o add coordinate variables to the MNC output from the diagnostics package
546    o change MNC-flags default value: true when useMNC=TRUE
547    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
548      the ability (off by default) to read the grid information using MNC
549    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
550    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
551    o do snap-shot diagnostics at the middle of the time-interval (instead of
552      at the end).
553    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
554      new test for AIM with thSIce + slab-ocean
555    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
556    o move state variable diagnostics to the beginning of the time step ;
557      (note: still needs some work specially for snap-shot diagnostics)
558      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
559    
560    checkpoint57c_post
561    o Change testing option (-ieee) to get closer agreement between g77 & ifort
562    o generate new output.txt files on faulks with g77 & the new -ieee option
563    checkpoint57c_pre
564    
565    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
566      update output.txt of exp. global_ocean.90x40x15
567    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
568      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
569    o add saltFlux(+File) forcing capability with periodicExternalForcing
570    o allow to use pkg diagnostics for GM-Redi & ThSIce output
571    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
572    o improvements for the MNC output from DIAGNOSTICS:
573      - correct handling of the unlimitied dimension
574      - all dims now have associated coordinate variables
575      - variables located at U, V, and Corner ("Z") points are now written
576        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
577        *all* data points are output
578    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
579    o added pkg/seaice/seaice_monitor.F
580    o mdsio_readfield.F can now read files visible only to master MPI process.
581    o pkg/seaice: some test code for ice-modified ocean stress
582    o exf_getffields interpolation defaults to bilinear for all scalar forcing
583      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
584      spurious negative numbers for precipitation and humidity.  Will cause
585      some small numerical differences for integrations using pkg/exf/exf_interp.F.
586    o pkg/ctrl/
587      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
588        May be enabled via doPackDiag
589      *  introduce z-scaling of
590         + gradient (doZscalePack) and
591         + control (doZscaleUnpack)
592    o pkg/mdsio/
593      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
594      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
595    
596    checkpoint57b_post
597    o simplify options in diagnostics_fill arguments (remove weird combinations)
598    o fix MNC coordinate variables so that they now contain per-face index
599      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
600      general, EXCH2 grids are only aligned to a "local" coordinate system
601    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
602    o Implement instantaneous output within pkg diagnostics:
603      setting a negative frequency in data.diagnostics produces
604     "snap-shot" output (as opposed to time-average if freq > 0)
605    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
606      NOTE: change ptracer diagnostics name: use 2 characters to work with
607            more than 9 tracers. Add also diagnostics of advect & diffus flux.
608    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
609      becomes the coordinate variable for the 'T' dimension
610    o add CF-style coordinate variables to MNC
611      - just a first cut:  numbers are meaningless on the cubesphere and
612        missing along the T axis but otherwise it works!
613    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
614    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
615    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
616      this is based directly on what the model compute, so that the content of
617      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
618    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
619    o clean up build options files for SunOS, in particular
620      - remove -traditional from xmakedepend
621      - change -xarch=v9 to -xarch=native for f77
622      - restore use of make (not gmake)
623      - add CC=gcc if using g77
624    o changes per discussion of AM, JMC, & EH3 today:
625      - move redundant "grid" variables out of "state" -- in preparation of
626        creating proper CF-style coordinate variables and in recognition
627        that any/all grid variables can be easily copied (eg. w/NCO) from
628        the grid files into any of the other NetCDF files
629      - *always* output grid variables with MDSIO (this will eventually be
630        changed)
631      - output MNC grid file if useMNC is true
632    o every instance of _END_MASTER() has been found and replaced with
633      _END_MASTER( myThid ) in order to satisfy certain picky Sun
634      preprocessors
635    o re-arrange diagnostics pkg initialisation:
636     - allow each package to extend the available diagnostics list
637     - add some checking and fix small problems (multi-threaded, ...)
638     - new S/R diagnostics_fill (replace fill_diagnostics):
639       look through the short list of active diag. (instead of the long list)
640       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
641    
642    checkpoint57a_post
643    o this set of changes restores TAMC compatibility
644      tested for global_ocean.90x40x15 adjoint on trough
645      (what a pain)
646    
647    checkpoint57a_pre
648    o some modifs in tools/build_options for sunos
649    o call ctrl_pack for ctrl at end for optimcycle=0
650    
651    checkpoint57
652    o add horizontal bi-harmonic viscosity for vertical velocity
653      - new parameter viscA4W (defaults to viscA4)
654      - affects only non-hydrostatic code
655      - to be done: no-slip lateral boundary conditions
656    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
657    o implement Implicit Vertical advection for pTracers
658    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
659      (implemented also for implicit vertical diffusion & advection)
660    o OBCS: extend application of tracer open boundary conditions
661      to a strip beyond the boundary of width Olx/Oly
662    o add call monitor to TAF set of required calls (flow directives)
663      and include in natl_box_adjoint
664    o untangle a few ifdefs related to cost, ctrl, autodiff
665      untangel a few ALLOW_ECCO_OPTIMIZATION
666    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
667      (theta2, salt2 in ecco_cost_weights)
668    
669    checkpoint56c_post
670    o OBCS as control variables
671      - update ctrl_ad_diff.list, obcs_ad_diff.list
672      - remove balance of obcs controls from default
673      - fix index bug nobcs in ctrl_init
674      - fix dummy fields filen in ctrl_pack
675      - add dummy weights for obcs
676    o lsopt: comment out fort.94 output
677    o optim:
678      - remove unnecessary header files
679      - adjusted namelists
680      - add xerbla.F to Makefile
681    o exf:
682      - multiple modifications of exf_check_range
683      - unit change in exf_init_runoff from [m/year] to [m/s]
684    o mdsio:
685      - i/o-vector change debugLevel from debLevA to debLevB
686    
687    checkpoint56b_post
688    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
689      is called from DO_THE_MODEL_IO
690      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
691      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
692      - clean up PTRACERS_WRITE_TIMEAVE a little
693    o add another verification experiment that tests both the cfc-pkg and
694      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
695      reactive tendencies treated inline with regular timestepping
696    o testreport previously did a lousy job of comparing small numbers, so
697      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
698      implemented in the little c-progam tmp_cmpnum.c which is embedded in
699      testreport.
700    o ptracers_monitor: bug fix for MPI
701    
702    checkpoint56a_post
703    o GCHEM: finish reorganizating the package
704      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
705        (introduces another 3D-array for each passive tracer, but only if
706        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
707        gchemTendency is not needed because the timestep is done separately)
708      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
709      - GCHEM is now---more or less cleanly---separate from PTRACERS
710      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
711        so clear to me how that should be done in a general way.
712    o CFC: improve formatting of output in CFC_ATMOS
713    o PTRACERS:
714      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
715        that ALL experiments with ptracers enable can be checked. This makes
716        GCHEM_MONITOR obsolete.
717      - include a runtime parameter PTRACERS_monitorFreq that defaults to
718        monitorFreq
719      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
720    o add PTRACERS (PTR0[1-5]) to testreport output
721    o exf_check_range:
722      * default changed to .TRUE.
723      * will check values for niter0 if debLevA, every timestep if debLevB
724      * STOP in exf_check_range if 'out of range'
725      * range chosen generous to allow for potential extema
726      TBD: a version with stricter range
727           permitted range would be runtime parameters
728    o GMredi:
729      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
730      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
731      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
732    o GCHEM:
733      - move call to GCHEM_FORCING_SEP, so that it is now called before
734        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
735      - introduced a useGCHEM runtime flag and applied it everywhere.
736      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
737        this flag is now only visible within GCHEM-pkg routines.
738      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
739        be replaced by a 3D array that is computed before thermodynamics; for
740        this, the tracer ID iTracer had to be included into the parameter list
741        of ptracers_forcing
742      - set up forward_step to call gchem_forcing, that will replace
743        gchem_forcing_int in ptracers_forcing
744      - cleaning up
745    o small cleaning of exch2: remove files that are also in eesupp/src
746    
747    checkpoint56
748    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
749    o mnc: cleanup "full" files--fixes out-of-memory problem
750    o ECCO-GODAE
751      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
752      * fully merged and updated from SIO code
753        windstress sign change affects
754        - exf_inscal_[u/v]stress
755        - sign of xx_tau[u/v] adjustments
756        - signs in cost_scat
757      * ctrl_get_gen: avoid update of tau[u/v] for first few days
758      * natl_box_adjoint updated and compressed
759      * 2-level checkpoint switch added
760        (tested in EXP. 1 of natl_box_adjoint)
761      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
762    o SVD
763      * first complete, non-hacked version for SVD calculations
764      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
765        performed via direct access files admtlm_vector.it????
766        (via ctrl_[un]pack)
767      * optimcycle is used for ARPACK iteration counter
768        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
769      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
770        and add linear transforms where necessary
771      * controls are initial/final SST, SSS (can be extended; need to check
772        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
773    o mdsio: filename info to both stderr, stdout
774    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
775      from sign change
776    
777    checkpoint55j_post
778    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
779      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
780    o add consistent build directories and .cvsignore files to verification
781    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
782    o make all subroutines 30 or less characters in length for certain older
783      compilers to work (a thorough search only turns up two routines in
784      pkg/ptracers)
785    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
786      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
787    
788    checkpoint55i_post
789    o change arrays for total vertical diffusivity (2.D if explicit,
790      3.D if implicit) ; each ptracer uses its own background value.
791    o added mnc/NetCDF output capability to ocn_compon_interf
792      - added bits to verification/cpl_aim+ocn so that it can run on
793        ITRDA and other clusters without the mpirun "-wd" option
794    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
795      configuration
796    o give MNC the ability to create additional files rather than
797      exceeding a specified file size limit "MNC_MAX_FILESIZE"
798      - the default is just less than 2GB which is a practical limit
799        on many systems
800    o Compute the non-local term using either KPP vertical diffusivity (=default)
801       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
802    
803    checkpoint55h_post
804    o add verification test "vermix"
805    o remove all the *_ioinc flags and replace with the single global
806      outputTypesInclusive flag
807    o allow to set a vertical profile of vertical diffusivity for T & S
808    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
809    o useMNC moved from data.mnc to data.pkg
810    
811    checkpoint55g_post
812    o Renaming carbon AD experiments to comply with testreport conventions
813    o Updating adjoint of Held-Suarez hs94.1x64x5
814    o Fixing directives for non-ECCO forward_step, after ECCO directives
815      have been fixed to avoid recomp. of do_oceanic_phys
816      Works well for global_ocean.90x40x15,
817      but recomp. issue remains for carbon
818    o Updating adjoint output for natl_box_adjoint after
819      pkg/ecco has been modified (see taga c55d_post)
820    
821    checkpoint55f_post
822    o rename to timeave_init_fixed
823    
824    checkpoint55e_post
825    o some delicate re-shuffle of store directives to avoid one
826      extra call of do_oceanic_physics
827      affects ecco_the_main_loop.F, do_oceanic_physics.F
828      checkpoint_lev1_directives.h
829    o NB: this may break global_ocean adjoint temporarily,
830      but it is clear how to fix it. Will do later, need this now.
831    
832    checkpoint55d_post
833    o ECCO specific cost function terms (up-to-date with 1x1 runs)
834    o ecco_cost_weights is modified to 1x1 runs
835    o modifs to allow observations to be read in as
836      single file or yearly files
837    o enable to read exf forcing fields as either
838      single file or yearly files (flag useExfYearlyFields)
839    checkpoint55d_pre
840    
841    o switch between 2-level and 3-level checkpointing
842    o add ability of MNC to write local and "partial" (eg. 2D slices where
843      the full 3D field is never actually stored) arrays to NetCDF files
844      with the correct (that is, the complete multi-dimensional) set of
845      array indicies
846      - used in mom_vecinv() to write the diagFreq output
847      - tested (demonstrated) in verification/aim.5l_cs
848    o further mnc-ification
849      - add verification/lab_sea to the list with mnc setups
850      - fix undefined mnc v-names in cd_code
851      - add kpp to mnc output (both snapshot and timeave)
852    o non-hydrostatic code
853      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
854        in calc_gw.F
855      - defaults to viscAh
856      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
857        friction or Leith) in non-hydrostatic mode, as long as there is
858        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
859    o pkg/cost
860      extend simple cost functions to treat time mean quantities
861      (T,U,V) via cost_accumulate_state from cost_tile
862    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
863        be 2 times larger than the minimum size the advection scheme requires.
864        now get a perfect conservation of salt in advect_cs test-exp (updated)
865    o GGL90 (Gaspar's TKE mixed layer)
866      - add horizontal diffusion of TKE, requires exchanges in
867        do_fields_blocking_exchanges, horizontal diffusivity is zero by
868        default. In OPA there is no horizontal diffusion of TKE but the
869        mixing coefficients are computed from a horizontal average of TKE of
870        6 points or so. I think that diffusion has a little more physical
871        justification.
872      - clean up ggl90_calc in the hope of reducing memory usage (this hope
873        was in vain)
874      - mask tke-variable in ggl90_init
875    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
876    o fix biharmonic diffusion on CS-grid.
877    o more obcs stuff
878      - added obcs_external_fields_load as an alternative to the EXF-pkg option
879        for reading boundary values. This routine is called from
880        obcs_prescribe_read
881      - updated obcs_check
882      - changed sponge layer relaxation parameter units for days to seconds
883      - turned off sponge layer by default
884      - changed argument list of OBCS_CALC to myTime+deltaTclock
885      - fixed about 35 bugs in obcs_external_fields_load
886    
887    checkpoint55c_post
888    o obcs stuff
889      - new runtime flags useOBCSprescribe, useOBCSbalance
890      - re-arranged obcs_calc
891      - moved exf_getobcs to obcs_prescibe_read
892        obcs_prescibe_read is called after ORLANSKI stuff
893        and independent of it (executable can contain all).
894      - updated obcs_check
895      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
896        These may be necessary only if tangential velocities are
897        prescribed at OB, not sure, needs testing.
898    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
899      which simplifies the calls and passes the ifc check-bounds test
900    
901    checkpoint55b_post
902    o add a 2D scalar, Z location, exchange_2 routine.
903    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
904      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
905      affects advect_cs results (for the wrong reason): update output.txt
906    o use a more standard discretization for biharmonic viscosity ;
907     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
908      affects results of dome set-up: update output.txt
909    o fix gad_advection.F (CubedSphere part), back to version 1.23
910    o fix bug in mom_vi_del2uv.F (CubedSphere part).
911    
912    checkpoint55a_post
913    o merged code to
914      * prescribe/read time-dependent open boundaries
915        (works in conjunction with exf, cal)
916      * sponge layer code for open boundaries
917      * each boundary N/S/E/W now has its own CPP option
918        (healthy for the adjoint)
919    
920    checkpoint55
921    o up-to-date adjoint of previous breaks
922      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
923      - global_ocean_ebm: adjoint still needs fix (TLM ok)
924      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
925      - carbon: * remove tr1-related adjoint verification
926                * add ptracer as control variable
927    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
928      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
929    
930    checkpoint54f_post
931    o in verification/carbin/ remove experiment related to
932      ALLOW_PASSIVE_TRACER (array tr1 etc)
933      code_ad/ input_ad/ results_ad
934    
935    o add two new packages
936      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
937        + subject to optimization (memory)
938      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
939        + subject to reordering (many GOTOs in the original code)
940        + so far opps is called for every (i,j) point, and then operates in
941          the vertical; one may want to reorder the scheme in order operate in
942          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
943          fields)
944    o overhaul of IO so that we now have flags for MDSIO and/or MNC
945      - all verification tests compile and run with linux_ia32_g77
946      - defaults are compatible with current input files--nothing
947        should change if you were not previously using MNC
948      - MNC output has been added in numerous places (eg. timeave)
949        but there are still a few writes not yet do-able with MNC
950        (this is in progress)
951      - flags now allow for either/or/both use of MDSIO and MNC and
952        documentation will soon follow
953      - numerous small formatting cleanups for ProTeX
954    o add version info (via BUILD_INFO.h) to MNC and stdout
955    
956    checkpoint54e_post
957    o add two new packages
958      - pp81 (Packanowski and Philander, 1981), Richardson number and
959        stratification dependent mixing
960      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
961      - these scheme operate in a similar manner as KPP (without ghat, of
962        course), however there is only one diffusivity that is used for both
963        temperature and salinity (and passive tracers)ç
964    o add offline package
965    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
966      provided by Stephanie Dutkiewicz
967    o genmake2: add ability to search for C compilers and cleanup test output
968      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
969    
970    checkpoint54d_post
971    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
972    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
973      leading to additional shift by 5 days each year of integration
974       (i.e. leading to considerable offset over the years)
975    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
976    o start with no AB and no initial filtering (staggerTimeStep):
977      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
978    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
979      (external loading & cpl import/export stay in forward_step.F)
980    o update coupling interface to work with new staggerTimeStep
981    o change MDSIO ptracers_pickup.
982    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
983    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
984    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
985    
986    checkpoint54c_post
987    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
988      this affects (truncation error) output.txt of test-exp:
989       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
990    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
991    o change Qnet to always be the net heat flux, (+upward).
992      affects (truncation error) output of natl_box exp.: updated
993    o define the max number of passive tracers in PTRACERS_SIZE.h
994    o start to test mnc routinely in exp0
995    o add sea-ice loading (sIceLoad) as a new forcing field.
996    
997    checkpoint54b_post
998    o add testreport "-j JOBS" option for parallel builds (tested and pretty
999       impressive on Altix and Opteron systems)
1000    o diagnostics can now write NetCDF files through the mnc package
1001    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1002    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1003    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1004      affects (truncation error) output of lab_sea & natl_box exp.: updated
1005    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1006    
1007    checkpoint54a_post
1008    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1009    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1010    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1011    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1012      + internal_wave (shift in writing cg2d_ini_res)
1013    checkpoint54a_pre
1014    
1015    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1016      - modified verification/lab_sea and natl_box_adjoint accordingly
1017    
1018    checkpoint54
1019    checkpoint53g_post
1020    o prepare splitting of thermodynamics: store convect.counter in common block
1021    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1022      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1023    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1024    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1025    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1026    o restore adjointability
1027    
1028    checkpoint53f_post
1029    o modifications that affect AIM experiment results (update output.txt):
1030      - no advection of S at top interface Nr (pkg/generic_advdiff)
1031      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1032    o AIM pkg:
1033      - include stability function into surf.Flux derivative relative to Tsurf
1034      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1035    
1036    checkpoint53e_post
1037    o merged cylindrical coord configuration
1038    o added rotating_tank experiment
1039    checkpoint53e_pre
1040    
1041    checkpoint53d_post
1042    o faulks upgraded: re-generate output.txt that have changed:
1043       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1044    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1045    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1046    o added Sadourny discretization of Coriolis
1047      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1048      - re-enabled use of omega3 (useAbsVorticity)
1049    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1050      vector-invariant equations
1051      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1052    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1053      hopefully without new bugs
1054      - still to do: biharmonic friction for non-hydrostatic w
1055    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1056    o regenerated output for global_ocean_ebm (using -ieee)
1057    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1058      of mom_common/
1059      - simple re-arrangement of instructions within computing loop
1060    checkpoint53d_pre
1061    
1062    checkpoint53c_post
1063    o new version of coupler for AIM+thSIce and Ocean models
1064     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1065     - land: change Evaporation of snow
1066     - aim with thSIce: fix bug in snow-precip.
1067    o changes to calc_gw.F
1068     - bug fix for w^2 term near the bottom boundary
1069     - (hopefully) improve the lateral slip boundary condtions for use with
1070        partial/looped cells
1071      - because the bug fix changes two verification experiments anyway (exp5
1072        and plume on slope), change the lateral boundary condition from half slip
1073        to the value of no_slip_sides
1074    o ebm package wasnt quite up to the parallel task. Fixed that.
1075    o Adjoint of EBM package + verification
1076      * TLM OK
1077      * ADM not sufficient accuracy yet (needs further testing)
1078    
1079    checkpoint53b_post
1080    o Commiting new energy balance model to repository
1081      * package is pkg/ebm
1082      * verif. is verification/global_ocean_ebm
1083      * references are in ebm_driver.F
1084    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1085    C        Global thermohaline circulation. Part I:
1086    C        Sensitivity to atmospheric moisture transport.
1087    C        J. Climate 12(1), 71-82
1088    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1089    C        Global thermohaline circulation. Part II:
1090    C        Sensitivity with interactive transport.
1091    C        J. Climate 12(1), 83-91
1092    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1093    C        Destabilization of the thermohaline circulation
1094    C        by atmospheric eddy transports.
1095    C        J. Climate 7(12), 1870-1882
1096    o Will need long integration testing.
1097    checkpoint53b_pre
1098    
1099    o created pkg/mom_common in preparation for variable viscosity code
1100    o renamed and split ini_mnc_io
1101    o pkg/land: only liquid water can diffuse or run-off
1102    o AIM using land: soil wetness availability account for snow
1103    o added printMapIncludesZeros to EEPARMS namelist
1104    
1105    checkpoint53a_post
1106    o restore TAMC compatiility for exf_constants.h
1107      (no usage of _d in .h)
1108    o Additional storing in KPP in an attempt to fix
1109      TAMC problem with adjoint of KPP code.
1110      (no success...)
1111      Identical code works fine with TAF.
1112    o Fixed verification/natl_box_adjoint experiments.
1113      Initial conditions for Experiments 4 and 5 are now
1114      set to "SEAICE_initialHEFF=0", which is more reasonable,
1115      and hence gives results closer to that of Experiment 2.
1116      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1117    
1118    checkpoint53
1119    o stable checkpoint with up to date adjoint
1120      TLM tests only run for 1st grdchk at the moment. Its unclear if
1121      this is a code problem or a problem with resetting code for g_
1122      variables that is being autogenerated wrong.
1123      Otherwise:
1124       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1125       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1126         are both still in chaos following their security messes.
1127    
1128    checkpoint52n_post
1129    o various build (mostly genmake2) changes including:
1130      - ability to build/run more easily within Cygwin and MacOS X
1131      - more complicated Makefiles with a stronger dependence on Gnu Make
1132    o pkg/seaice modifications
1133      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1134        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1135        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1136      - changed proxy for geostrophic velocity and updated
1137        verification/lab_sea/results/* accordingly
1138      - removed ADI dynamic solver from pkg/seaice
1139      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1140        they caused a segmentation fault under certain circumstances
1141      - removed unused field WATR
1142    o bug fix in exf-package:
1143      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1144         now reflect that.
1145    o small fixes in the cal-package:
1146      - set reference date to first of January for the 'model'-calendar
1147      - failing of cal_CheckDate in cal_FullDate now actually results in a
1148        warning
1149    o small modifications in exf-package to increase flexibility:
1150      - change climtempfreeze from a constant to a runtime parameter that
1151        is specified in data.exf_clim (default = -1.9)
1152      - introduce runtime parameter windstressmax (default = 2.0) that is
1153        specified in data.exf
1154    o fix in pkg/thsice:
1155      - update Evap (Tsf changes) to be consistent with Latent heat flux
1156      - maintain snow precipitation unchanged (even if Tsf >=0).
1157     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1158    
1159    checkpoint52m_post
1160    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1161      this does not change any of the results, because myIter=0 in swfrac always
1162      lead to jwtype=2 (the default anyway), but the call makes little sense
1163      as a default
1164    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1165    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1166      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1167    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1168    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1169    o extending useSingleCpuIO option to work with new exch2 I/O format
1170      - old-style, missing-tile I/O is still accessible by defining CPP
1171        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1172    o monitor package can write to NetCDF files and/or STDOUT
1173    o fix re-definition bug in MNC_GRID_INIT_ALL()
1174    o doc/api_reference added
1175      - a framework for building an API Reference Manual using all
1176        the "protex" comments embedded in the code
1177      - see pkg/generic_advdiff, pkg/mnc for examples
1178    o MNC:
1179      - make myThid the last argument for all subroutines
1180      - new default for the grid files: NO halos
1181      - add useMNC and other run-time flags
1182      - separate per-file-group handling of the unlimited dimension
1183      - early initialization of MNC w/ flags read at the eeboot stage
1184        and lookup tables set in initialize_fixed
1185      - write all MNC output to a freshly-created directory
1186    o thermodynamics sea-ice (thsice) is now tested with testreport.
1187    o test exp. advect_cs: use the standard cs32 grid ; update output.
1188    o Added functionality to grdchk:
1189      pick global i,j,k position (or nearest wet) where to perform check.
1190    
1191    checkpoint52l_post
1192    o new land formulation:
1193      a) use ground enthalpy as prognostic variable to ensure exact
1194         energy conservation.
1195      b) account for water temperature and for latent heat of freezing
1196         in all processes (rain, run-off, ground storage)
1197      c) compute surface and ground temperature implicitly.
1198    o aim_v23 modification for new land model:
1199      a) Treat separately land / ocean / sea-ice surface fluxes
1200         to allow implicit computation of land & sea-ice surface temp.
1201      b) add snow precipitation.
1202    checkpoint52l_pre
1203    
1204    o fix problem (when 1 tile is empty) in min/max monitor.
1205    o fix bug in timeAve (u,vZetatave in common block)
1206    o no restoring terms under ice for pkg/seaice
1207    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1208    o bug fix for pkg/seaice pickups
1209    o change MNC call locations and add coordinate attributes
1210    o mask vorticity at the corner ; affects global_ocean.cs output
1211    o fix ini_curvilinear_grid ; test CS experiments with mpi
1212    o aim.5l_cs: modify sea-ice fraction input file ; update output
1213    o exf: Adding simple range check routine for exf fields after read
1214    
1215    checkpoint52k_post
1216    o removed top-level directory "diags"
1217      - we migrated these functions to pkg/timeave a long time ago
1218    o fixed bug introduced in pkg/monitor
1219    o accuracy ctrlprec = 32 insuffient for gradient checks using
1220      averaged fields (I/O via cost_averages)
1221      -> use ctrl.h in active_file*.F to control I/O precision.
1222    o paramter list of CALL ADTHE_MAIN_LOOP
1223    o added initial do_the_model_io to ecco
1224    o set all ...Freq to zero after cost_final
1225      taveFreq, dumpFreq, pChkptFreq
1226    o MAIN and ECCO differentiability restored
1227    
1228    checkpoint52j_post
1229    o fix nchklev in tamc.h for global_ocean...
1230    o Bringing flow and store directives up-to-date
1231    o Really weird thing!
1232      call do_the_model_io from the_main_loop with parameters
1233      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1234      TAF places a faulty re-call of initialise_varia
1235      after cost_final call which should not be there!
1236    checkpoint52j_pre
1237    
1238    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1239      error messages
1240    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1241    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1242      debug output
1243    o modfied mdsio_writefield.F to handle non-global files under exch2
1244    o update AIM Cubed-Sphere exp (aim.5l_cs):
1245      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1246    o update AIM Equatorial Channel exp:
1247      use standard aim_v23 pkg and change the SST fields to be more realistic.
1248    o globalFile now works with exch2
1249    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1250      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1251    o limit timeave output for hi-res integrations
1252    
1253    checkpoint52i_post
1254    o removed CPP_EEOPTIONS.h from verification/*/code
1255    o updated the tiling for global_ocean_pressure
1256    checkpoint52i_pre
1257    
1258    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1259      the old pkg/aim).
1260    
1261    checkpoint52h_pre
1262    o shortened offending lines in exch2_send_rx?.template
1263    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1264    o genmake2: add build & execute test for NetCDF code
1265    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1266      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1267    o added useSingleCPUIO flag to monitor.F and mon_out.F
1268    o added temporary hack for sea-ice dynamics on the cube:
1269      metric terms are ignored and it is assumed that
1270      there is no sea-ice on cube faces 1, 2, 4, and 5.
1271    
1272    checkpoint52f_post
1273    o added exch2 cube routines to pkg/exch2
1274    o modified hs94.cs-32x32x5 to use it
1275    o added new grid files to hs94.cs-32x32x5
1276    checkpoint52f_pre
1277    
1278    checkpoint52e_post
1279    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1280      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1281    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1282      to work with implicit vertical advection and AB ;
1283    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1284    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1285     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1286    checkpoint52e_pre
1287    
1288    o fix bug in impldiff when Nr=1 or Nr=2.
1289    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1290    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1291    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1292      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1293    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1294    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1295    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1296    
1297    checkpoint52d_post
1298    o re-tiled many expts to allow comparison in multi-processor mode
1299      - updated output accordingly
1300      - changed hs94.128x64x5 to use intial T from file rather than use the
1301        random number generator
1302    o add infrastructure in model routines for fizhi and gridalt packages
1303    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1304    o changes to permit hi-res, cubed-sphere, configuration
1305      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1306      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1307      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1308        of surface winds for the cube
1309      (A verification experiment, based on global_ocean.cs32x15, but with
1310       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1311       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1312       complete with example surface forcing files and matlab scripts to look
1313       at the output and compare it with that of global_ocean.cs32x15.)
1314    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1315       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1316       to conform to the common rule.
1317    o check-in the first version of the coupler + interfaces for multi-components
1318       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1319       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1320       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1321       - ocean and atmos. share the same horizontal grid (no interpolation).
1322       - exchanges between component and coupler is done in forward_step
1323    o new verification experiment, cpl_aim+ocn:
1324       coupled ocean - AIM atmosphere on cs32 grid.
1325    
1326    checkpoint52d_pre
1327    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1328    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1329    
1330    checkpoint52c_post
1331    o Fixing OPTIONS files for use of exf:
1332      - ALLOW_ECCO not needed
1333      - ECCO_CPPOPTIONS.h should not be included from
1334        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1335        as has been the case in the past
1336      - All cal/exf related options are currently set in
1337        single header file. Should remain so until we
1338        agree on a consistent new policy.
1339    o Removed all CPP options for cal package.
1340      cal has no more CPP options.
1341    o modified STOREs in GAD_ADVECTION
1342    o corrected key comp. for passkey
1343    
1344    checkpoint52b_post
1345    o new version: "thsice" of thermodynamic sea-ice pkg:
1346     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1347     - modify fluxes but do not change theta directly;
1348     - light cleaning of bulk_force pkg (still needed with thsice).
1349     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1350       + output_thsice.txt to test thsice & bulk_force pkgs.
1351    o put back grid & coriolis monitor output.
1352    checkpoint52b_pre
1353    
1354    o call "do_the_model_io" at the beginning (=> dump initial state)
1355    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1356    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1357      (need info on NUMBER_OF_PTRACERS)
1358    o missing PTRACERS headers in some routines
1359    o default tamc.h in pkg/autodiff supposed to crash
1360      to ensure proper customization
1361    
1362    checkpoint52a_post
1363    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1364      - moved surfaceTendencyTice from pkg/seaice to main code
1365      - subroutine FREEZE_SURFACE now limits only surface temperature
1366        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1367        => new output.txt for global_ocean.cs32x15 & global_with_exf
1368      - keep the old version of FREEZE for backward compatibility;
1369        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1370      - corresponding modifs for TAF directives
1371    o added surface flux output variables to TIMEAVE_STATVARS
1372    o time-averaged output for pkg/ptracers
1373    o fix problem with ECCO-related divided adjoint
1374      snapshot file was missing some ad-variables,
1375      but no warning issued by TAF
1376    
1377    checkpoint52a_pre
1378    o some bug fixes for #undef REAL4_IS_SLOW
1379    
1380    checkpoint52 = ecco_c52_e35
1381    o after testing adjoints of checkpoint51u_post
1382    
1383    checkpoint51u_post
1384    o this is the post-merge tag of the ecco-branch
1385      (needs another clean checkout and re-testing)
1386    o various natl_box_adjoint configs and results
1387      but no input fields
1388    o obcs adjoint not yet merged!
1389    o adding ECCO global 1x1 and 2x2 degree configs
1390    o updated/extended some store directives for seaice
1391    o pkg/ecco now containes ecco-specific part of cost function
1392    o top level routines the_main_loop, forward_step
1393      supersede those in model/src/
1394      previous input data.cost now in data.ecco
1395      (new namelist ecco_cost_nml)
1396    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1397    
1398    checkpoint51t_post
1399    o this is the pre-merge tag of the ecco-branch
1400    
1401    checkpoint51s_post
1402    o cleanup: removed various obsolete #define-s
1403    o pkg/grdchk
1404      - renamed 'ph-grd 3' to 'grad-res'
1405      - merged from ecco-branch
1406        (remaining bug fixes for obcs gradient checks)
1407      - additional high-precision output for testreport
1408        (grep for 'precision_grdchk_result')
1409    
1410    checkpoint51r_post
1411    o cleaned up or removed CPP_OPTIONS.h files
1412    o updated results for some of the tests to reflect the new
1413      optfiles (-ieee: -O0 instead of -O3)
1414    
1415    checkpoint51q_post
1416    o cd_code:
1417      - moved cd_scheme.F -> cd_code_scheme.F
1418      - separate read_checkpoint from cd_code_ini_vars.F
1419      - separated cd_code part from write_checkpoint
1420      - updated AD_SOURCE, generated .flow
1421      - added CD_CODE_VARS.h to the_main_loop
1422      - Moving cd_code specific store dir.s to pkg/cd_code
1423    o ctrl package totally restructured
1424      - pack/unpack now optional and decoupled from
1425        xx_/adxx_ I/O
1426      - ctrl_pack/unpack cleaned
1427        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1428      - confined inclusion of AD_CONFIG.h to where necessary.
1429    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1430    
1431    checkpoint51p_post
1432    o create initial cd_code package
1433      - WARNING: the initialization of fields within packages
1434        is broken because INI_FIELDS (where READ_CHECKPOINT is
1435        called) is called *before* PACKAGES_INIT_VARIABLES.
1436        This seems to be backwards since
1437        1) its important to initially zero the entire field including
1438           the "halo" region
1439        2) zeroing needs to be done *before* reading pickup info
1440           and the pickup call might or might not happen in any
1441           particular run
1442      - this needs an overhaul for R2
1443    o cleanup verification/*/code/GMREDI_OPTIONS.h
1444    o cleanup testreport
1445    
1446    checkpoint51o_post
1447    o bringing AD-related verif's up to date with genmake2
1448      - carbon/
1449      - global_ocean.90x40x15/
1450      - hs.94.1x64x5/
1451      - (front_relax/ )
1452    o (more) consistent directory structure for AD-related verif.'s
1453    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1454    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1455    o bug fix in find_alpha.F for MDJWF:
1456      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1457        change rho -> rho-rhoConst
1458      - replace call find_rho to find_rhonum
1459    o initialisation of rFlx extended to full array (required by TAF)
1460      and shifted to thermodynamics
1461    o removed PTRACERS.h in ptracers routine
1462    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1463    o Correcting initialisations for fVerU, fVerV.
1464    o helping TAF to recognize dependency on kUp for
1465      fVerU, fVerV
1466    o Replacing delZ by delR in pkg/ctrl/
1467    checkpoint51o_pre
1468    
1469    o undid all of cp51 pending some cleanups and discussion
1470    o added the [#include "AD_CONFIG.h"] statement to all files that need
1471       it for adjoint/tl #defines
1472     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1473     o removed tools/genmake since it no longer works
1474    
1475    checkpoint51n_post
1476    o modifications to make FREEZE flux visible to pkg/kpp
1477      - moved surfaceTendencyTice from pkg/seaice to main code
1478      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1479      - subroutine FREEZE now limits only surface temperature
1480        (this means new output.txt for global_ocean.90x40x15,
1481         global_ocean.cs32x15, and global_with_exf)
1482    o added surface flux output variables to TIMEAVE_STATVARS
1483    
1484    checkpoint51n_pre
1485    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1486    o added [#include "AD_CONFIG.h"] to all files that use the following
1487      defines:
1488      - ALLOW_ADJOINT_RUN
1489      - ALLOW_TANGENTLINEAR_RUN
1490      - ALLOW_ECCO_OPTIMIZATION
1491    
1492    checkpoint51m_post
1493    o incorporating changes to get TAMC/TAF working in genmake2
1494      - added new TAMC/TAF targets to the Makefile
1495      - various cleanups related to package handling
1496      - these changes should have no impact on the forward model
1497    
1498    checkpoint51l_post
1499    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1500     - faster algorithm for cal_addtime.F
1501     - higher precision arithmetic, where needed
1502     - pkg/exf *startdate variables changed from calendar date to
1503       model integration time
1504    
1505    checkpoint51l_pre
1506    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1507    o enable to apply restoring on S & T only in a latitude band.
1508    o update output (external_forcing_surf modif. change truncation errors)
1509       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1510    
1511    checkpoint51k_post
1512    o change default to: useNHMTerms=.FALSE.
1513     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1514       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1515     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1516        exp1, ideal_2D_oce
1517     - change data file of oceanic exp (leave the results unchanged for now)
1518       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1519    o set gravitySign automatically according to the vertical coordinate used
1520      (and change sign: back to "logical" value: +1 when R increases downward)
1521    o added an include barrier to the default CPP_OPTIONS.h and
1522      removed the #include "PACKAGES_CONFIG.h" from it
1523    o fix a bug in mom_fluxform (from chk51j_post)
1524    
1525    checkpoint51j_post
1526    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1527    o adjusted some flow directives (dynamics, thermodynamics)
1528    o added cubed-sphere case to test cost function
1529    o heckpoint_lev?_directives.h now include
1530      pkg-specific directives, whenever those are enabled.
1531    o Moving pkg-specific flow directives to corresponding pkg
1532      Moving pkg-specific differentiation list to corresponding pkg
1533      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1534      ---> conventions are
1535           - pkg_ad.flow
1536           - pkg_ad_diff.list
1537           - pkg_ad_check_lev?_dir.h
1538    
1539    checkpoint51i_post
1540    o merge of the branch-genmake2
1541      - knowingly breaks the older genmake
1542      - automatic generation of all ALLOW_${PKG_NAME} defines
1543      - new testreport supersedes older testscript
1544    o large number of package inclusion and header cleanups
1545    checkpoint51i_pre
1546    
1547    o new output for adjoin of global ocean vector invariant
1548    o fix for checkpoint of thermodynamic seaice and bulk_force
1549    o Steph gchem various cleanups
1550    
1551    checkpoint 51h_pre
1552    o fixed some single quotes
1553    o modify gchem pkg to be more versatile
1554    o modifications to clean up dic pkg
1555    o add pkg/cfc
1556    
1557    checkpoint51g_post
1558    o provide links for ARPACK and ADM*TLM
1559    o start removing verification/vero/
1560    o update AD-related stuff
1561      (in particular some IF-statements in model/src/ routines)
1562    o adding to verification/global_ocean.90x40x15/ adjoint of
1563      vector invariant setup
1564    
1565    checkpoint51f_post
1566    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1567    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1568      of tracer Green's fucntions for ocean inversion project.
1569    
1570    checkpoint51f_pre
1571    o Added on-the-fly spatial interpolation capability
1572        "USE_EXF_INTERPOLATION" to pkg/exf.
1573      - This is a temporary Cartesian-grid hack until
1574        the super-duper ESMF coupler becomes available.
1575      - See verification/global_with_exf/README for usage example.
1576      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1577        flags and modified pkg/seaice accordingly.
1578    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1579        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1580        non-local transport term.
1581    
1582    checkpoint51e_post
1583    o pkg/mom_vecinv:
1584      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1585      - add time-ave diagnostic of vorticity advection.
1586    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1587    o atmospheric geopotential: - include water vapor effect;
1588                                - use p^kappa in p* scaling.
1589    o land pkg: read initial state from files.
1590    o AIM : add stratospheric drag in the upper level
1591    
1592    checkpoint51d_post
1593    o change function ILNBLNK (=> last non-blank char.) to return zero
1594      (instead of the string length) when the string. char is empty
1595    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1596    o modif's to restore TAMC compatibility
1597      - avoid "_d" constructs in PARAMETER declarations
1598      - avoid interrupting lines by comment lines
1599    o Use cluster local disks for purely local I/O
1600      vs. globally visible disks needed for ctrl stuff
1601      (merged from ecco-branch)
1602      - new active_file_loc... and mdsio_..._loc routines
1603      - affected packages: autodiff, ctrl, grdchk, mdsio
1604    
1605    checkpoint51c_post
1606    o introducing integer flag debugLevel
1607      - debLevZero: suppress all output
1608      - debLevA: standard
1609      - debLevB: equivalent to current debugMode=.TRUE.
1610    o introducing pathname variable mdsioLocalDir for mdsio
1611      that can be specified at runtime
1612      (relevant for cluster I/O to local disk)
1613    `
1614    >>>checkpoint51b_post
1615    adjoint of ptracers
1616    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1617    o extended state in checkpoint_lev?, etc.
1618    o alternative ctrl/cost with tr1 or ptracer
1619    o new comlev1_bibj_ptracers
1620    o new ptracers.flow
1621    o made ptracers_forcing same as external_forcing_s
1622    o added verification for adjoint with ptracers
1623      - adm. grdchk fail so far
1624      - tlm. grdchk OK
1625      - checked tapelev/comlev recomputations: OK
1626    <<<checkpoint51b_pre
1627    
1628    checkpoint51a_post
1629    o added code for biogeochemistry package
1630      - new pkgs: dic, gchem
1631      - new subroutine in ptracers
1632    o modify code for biogeo packages
1633      - in model/src and pkg/ptracers
1634    
1635    checkpoint51
1636    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1637      - autodiff, ctrl, exf, grdchk, seaice
1638      kept separate packages
1639      - cost, ecco, obcs
1640    o updating verification/internal_wave, verification/lab_sea
1641      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1642    
1643    checkpoint50i_post
1644    o Preparing next differentiable checkpoint and sync
1645      of MAIN vs. ecco-branch
1646      - 1st step: this one is differentiable
1647      - 2nd step: next(! not this) checkpoint will have updated packages
1648                  from ecco-branch)
1649    
1650    checkpoint50h_post
1651    o new package "land": provide surface BC for AIM.
1652    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1653    o AIM: use true log-P extrapolation for near surface temp (= as in
1654        F.Molteni paper) ; update aim.5l_cs output.
1655    o New variable in PARM03 for more flexible pickups
1656    o somewhat cleaned package initialisation sequence for
1657      ctrl/ cost/ ecco/ in packages_... routines
1658    
1659    checkpoint50g_post
1660    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1661      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1662      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1663        made the default because of faster convergence than ADI
1664    
1665    checkpoint50f_post
1666    o exf totally restructured
1667      - replaced all exf_set_ routines by one generic exf_set_gen.F
1668        and made sure it's still differentiable
1669      - split exf_getffields.F into new exf_bulkformulae.F
1670      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1671      - updated adjoint/makefile and relevant verif. accordingly
1672    
1673    checkpoint50f_pre
1674     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1675          + change Evap over land. (update aim.5l_cs output)
1676     o added missing .cvsignores and made uniform across expts
1677     o changed configuration of tidal_basin_2d expt
1678     o added pkg/debug functions for tracing code in fatal crashes
1679     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1680     o new fn in pkg/monitor to stop model if solution grows too big
1681     o removed lots of single quotes from comments
1682    
1683    checkpoint50e_post
1684    o make KPP work with PTRACERS
1685     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1686       nearly a copy of kpp_transport_s
1687     - there is no analogue to SurfaceTendencyS, so I have to use
1688       gPtr(of the surface layer) instead
1689    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1690    checkpoint50e_pre
1691    
1692    checkpoint50d_post
1693    o change kpp output from multiple-record state files to single-record state
1694      files analogous to write_state.F
1695    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1696      analogous to the cg2d-related output.
1697    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1698      so that writing to internal file fn (with length 512) fails.
1699    checkpoint50d_pre
1700    
1701    checkpoint50c_post
1702    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1703    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1704    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1705    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1706    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1707    
1708    checkpoint50c_pre
1709    Merging from release1_p13:
1710    o bug fix for pkg/seaice dynamic solver
1711    o Added SEAICE_initialHEFF to pkg/seaice
1712    
1713    checkpoint50b_post
1714    o store u*,v* in gU,V instead of in guNm1,gvNm1
1715    o in order to put the momForcing out of the Adams-Bashforth:
1716      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1717      to timestep.F
1718    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1719    o re-generate output for highly sensitive test-exp:
1720       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1721    
1722    checkpoint50b_pre
1723    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1724    o corrected CPP option mismatch in exf_Bulk... functions for case
1725      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1726    
1727    checkpoint50a_post
1728    o Bug fix for merging between c50 and KPP.
1729      ikey was passed from thermodynamics to kpp_calc via
1730      common block rather than being recomputed in kpp_calc,
1731      in contradiction with new key itdkey.
1732      New key ikppkey created, and tamc.h headers updated.
1733    
1734    checkpoint50
1735    - 2nd step of merge with ecco-branch:
1736      merge changes in ecco-branch back into main trunk
1737    - bug fix in find_alpha
1738    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1739    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1740    - merged some sliced AD support routines
1741    
1742    checkpoint49
1743    merged from ecco-branch:
1744    o exf:
1745      - Enable initialisation of forcing fields to constant
1746        (runtime) values.
1747      - in exf_getffields.F
1748        Reduce i-/j-loop to interior domain, discarding overlaps.
1749        That also fixes wrong TAF-key computations for key_1, key_2
1750        with bulf formulae.
1751      - exf_init.F modify #ifdef for exf_init_evap
1752      - exf_getffieldrec.F, ctrl_getrec.F
1753        The following INT-usages are not safe:
1754          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1755          fldcount = int(fldsecs/fldperiod) + 1
1756        and were modified.
1757    o autodiff: checkpoint_lev...
1758      - updated storing for bulk formulae (some arrays were missing)
1759      - added state for seaice package
1760      - synchronized with main branch
1761    o DIVA:
1762      Modif.s in
1763      - the_main_loop.F
1764      - the_model_main.F
1765      and added cost_final_restore.F cost_final_store.F
1766      o With these changes, it is possible to fully separate
1767        the first forward run to compute the cost function (mdthe_main_loop)
1768        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1769        into separate model executions.
1770        This enables better tuning of DIVA to given queue sizes.
1771      o Loss of cost function value in consecutive DIVA runs is
1772        fixed by storing to 'costfinal' file.
1773      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1774        beginning/end of adjoint integration is accounted for.
1775      The current changes apply to TAF-1.4.26.
1776      TAF has one remaining bug, requiring one manual change
1777      (see MITgcm manual).
1778    o cal: synchronized between MAIN and ecco-branch
1779    
1780    checkpoint48i_post
1781    o Changes to restore differentiability of code w.r.t. previous tag
1782      (mostly adding new routines to make list and replacing
1783      pressure by totPhiHyd).
1784    o Updated and merged grdchk package
1785      - has both ADM and TLM checks
1786      - works for single- and multi-proc.
1787      - output cleaned
1788      - worked successfully for parallel DIVA
1789    o genmake:
1790      - Adding -platform=SP4
1791      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1792    o Modif. for DIVA:
1793      ctrl_unpack should not be called in intermediate DIVA interval.
1794      (similar thing would apply for active files such as
1795      tbar, sbar, psbar, which should not be reinitialised;
1796      only relevant for ecco-branch)
1797    
1798    checkpoint48h_post
1799    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1800    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1801    o Added SEAICE_initialHEFF to pkg/seaice
1802    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1803    
1804    checkpoint48g_post
1805    --- EOS:
1806    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1807      store total Potential in totPhyHyd for diagnostics & EOS.
1808    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1809    --- Pressure/geopotential gradient:
1810    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1811    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1812      ( changes results of global_ocean_pressure )
1813    o NLFS + z-coord.: add eta*Rho' contribution.
1814    o accurate phiHyd when using interface-W at the middle between 2 centers
1815     ( changes results of ideal_2D_oce )
1816    o includes r* 2nd term in potential gradient.
1817    
1818    checkpoint48f_post
1819    Merging from release1_p12:
1820    o Modifications for using pkg/exf with pkg/seaice
1821      - improved description of the various forcing configurations
1822      - added basic radiation bulk formulae to pkg/exf
1823      - units/sign fix for evap computation in exf_getffields.F
1824      - updated verification/global_with_exf/results/output.txt
1825    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1826      (SBO) core products, including oceanic mass, center-of-mass,
1827      angular, and bottom pressure (see pkg/sbo/README.sbo).
1828    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1829      to avoid negative values in shallow regions.
1830      - updated verification/natl_box/results/output.txt
1831      - updated verification/lab_sea/results/output.txt
1832    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1833    o Added useSingleCpuIO option (see PARAMS.h).
1834    o Updated useSingleCpuIO option in mdsio_writefield.F to
1835      work with multi-field files, e.g., for single-file pickup.
1836    o pkg/seaice:
1837      - bug fix in growth.F: QNET for no shortwave case
1838      - added HeffFile for specifying initial sea-ice thickness
1839      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1840    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1841      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1842    o pkg/seaice:
1843      - adjoint-friendly modifications
1844      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1845    
1846    checkpoint48e_post
1847    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1848    o dynamics: change definition of computational domain & adapt mom_fluxform
1849      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1850    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1851        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1852        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1853        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1854        inverted_barometer solid-body.cs-32x32x1
1855      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1856    
1857    checkpoint48d_post
1858    o in preparation for r*:
1859     a) use pre-computed gradient of hydrostatic potential:
1860        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1861     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1862        => affects results of glob_oce_pressure (different truncation error)  
1863      update output.txt of ideal_2D_oce & global_ocean_pressure
1864    
1865    checkpoint48d_pre
1866    o in preparation for r*:
1867      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1868      pass the 2 comp. of the grad. as arguments to momentum S/R.
1869      but for the moment, only used if it does not change the results.
1870    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1871    
1872    checkpoint48c_post
1873    Modifications in treatment of initial flux forcing controls
1874    to avoid extra storing of flux fields.
1875    
1876    checkpoint48c_pre
1877    o Added tidal_basin_2d experiment (currently 1D!)
1878    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1879    
1880    checkpoint48b_post
1881    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1882     (modification to pressure gradient not yet implemented)
1883    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1884      (for U & V) that are used for vertical advection of momentum.
1885    
1886    checkpoint48a_post
1887    o In preparation for r*, use temp. array to compute vertical transport
1888       in flux-form momentum pkg. => change results of few test-exp.
1889      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1890                        lab_sea, natl_box & plume_on_slope
1891    
1892    checkpoint48
1893    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1894    
1895    checkpoint47j_post
1896    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1897    o moved adexch from forward_step to addummy_in_stepping
1898    o added exch in ctrl_map_...
1899    o aveFreq.=0. at end of cost_final to avoid overwrite in
1900      reverse checkpointing loop
1901    o Yet more changes in gmredi:
1902      * adgmredi_calc_tensor
1903        avoiding all recomputation of gmredi_slope_limit
1904      * adgmredi_x/y/rtransport
1905        added flag for excessive storing to avoid recomp. of
1906        u/v/rtans, dTdx/y/z
1907        -> this is not really necessary and very memory-consuming
1908      * adgmredi_slope_psi:
1909        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1910      * gmredi_slope_limit
1911        re-activated full calculation of taperfct for case 'ac02'
1912    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1913    
1914    checkpoint47i_post
1915    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1916    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1917      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1918    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1919    o gmredi: fix few bugs.
1920    
1921    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1922    This will be a good checkpoint to plug into the ecco-branch.
1923    o few modif.'s to get latest version adjointed
1924      (mainly kick out code in ini_linear_phisurf)
1925    o modif's to run adjoint with exactConserv
1926    o case GM_BOLUS_ADVEC should be cleaned
1927      S/R gmredi_slope_psi should be cleaned
1928    o verification/carbon now has exactConserv=.TRUE.
1929    
1930    checkpoint47g_post
1931    o time-average AIM output: becomes independent from statvars time-average
1932      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1933    o After TAF bug fix:
1934      Tested adjoint of gmredi package.
1935      Tests were done with checkpoint47 rather than with latest
1936      checkpoint47f_post since the latter is broken for the adjoint
1937      verification/carbon/ contains both ADM and TLM gradient checks.
1938    Here they are, before they get changed/lost/stolen.
1939    Mostly modif.'s to fix numerical sensitivities.
1940    Gradient checks OK for
1941    - GM_taper_scheme:
1942      * clipping
1943      * ac02
1944      * linear
1945      * glw91
1946      * dm95
1947      * ldd97
1948    - GMREDI_OPTIONS:
1949      * GM_VISBECK_VARIABLE_K
1950      * GM_NON_UNITY_DIAGONAL
1951      * GM_EXTRA_DIAGONAL
1952      * GM_BOLUS_ADVEC
1953    in conjunction with data.gmredi parameters to be checked in
1954    in a few minutes under verification/carbon/code/
1955    
1956    checkpoint47f_post
1957    Merging from release1_p10:
1958    o modifications for using pkg/exf with pkg/seaice
1959      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1960        and SEAICE_EXTERNAL_FLUXES
1961      - pkg/exf CPP options EXF_READ_EVAP and
1962        EXF_NO_BULK_COMPUTATIONS
1963      - usage examples are Experiments 8 and 9 in
1964        verification/lab_sea/README
1965      - verification/lab_sea default experiment now uses
1966        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1967    
1968    checkpoint47e_post
1969    o created a tag prior to creating a branch
1970    
1971    checkpoint47d_post
1972    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1973      at the bottom boundary had an erroneous half slip boundary condition
1974    o added bottom drag and no slip boundary condition capabilities to
1975      oceanic pressure coordinates code
1976    o added new verification experiment global_ocean_pressure, this experiment is
1977      also described in the tutorial section of the manual
1978    checkpoint47d_pre
1979    
1980    checkpoint47c_post
1981    o Added a verification experiment for a global cubed-sphere ocean run
1982      -  verification/global_ocean.cubed32x32x30
1983      -  uses pkg/therm_seaice and pkg/bulk_forcing
1984    
1985    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1986    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1987      when using P-coordinate; only implemented for atmospheric config.
1988    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1989      NOTES: requires option NONLIN_FRSURF to be "#define".
1990    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1991    
1992    checkpoint47b_post
1993    Merging from release1_p9:
1994    o pkg/seaice
1995      - removed GOTO's and added taf directives
1996      - double precision constants to reduce the g77 (Linux)
1997        to F77 (SGI) differences reported in release1_p8
1998    o tools/genmake
1999      - added SGI options
2000    o verification/testscript
2001      - updated to that of checkpoint47a_post
2002    o verification/global_ocean.90x40x15/input/eedata
2003      - modified for SGI f77 compatibility
2004    o verification/lab_sea
2005      - added description of sea-ice model
2006      - added missing matlab routines
2007      - added test of thermodynamics parallelization
2008    
2009    checkpoint47a_post
2010    o new pkg: aim_v23
2011     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2012       for now, keep the same surface forcing as before.
2013     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2014     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2015     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2016    o add diagnostic of surface correction term in monitor output
2017    
2018    o bulk_force and therm_seaice
2019    - Two packages:  bulk_force (Bulk forcing)
2020      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2021    - Earlier integration from Stephaine Dutkiewicz
2022      and Patrick Heimbach.
2023    - Two ifdef statements for compile time,
2024       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2025    
2026    checkpoint47
2027    differentiable version of checkpoint46n_post
2028    o bug fix in quasihydrostaticterms
2029    o * "clean" adjoint code (in terms of extensive recomputations)
2030        can now be obtained for all GMREDI options (i.e. for
2031        - GM_VISBECK_VARIABLE_K
2032        - GM_NON_UNITY_DIAGONAL
2033        - GM_EXTRA_DIAGONAL
2034        - GM_BOLUS_ADVEC )
2035      * However, wrong gradient check problem remains unsolved.
2036      * New CPP options have been introduced for different
2037        tapering schemes
2038    o external_fields_load now part of differentiation list
2039    o pressure needs multiple storing;
2040      would be nice to have store_pressure at beginning or
2041      end of forward_step, e.g. by having phiHyd global (5-dim.)
2042      (NB: pressure is needed for certain cases in find_rho,
2043      which is also invoked through convective_adjustment).
2044    o recomputations in find_rho for cases
2045     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2046    o #define ATMOSPHERIC_LOADING should be differentiable
2047    o ini_forcing shifted to begining of initialise_varia
2048    o Incorporating QNVS line search routines into MITgcm
2049      (this is separate code, and therefore not under pkg)
2050      lsopt/, optim/
2051    o Updated verification/carbon/
2052      - #define GM_VISBECK_VARIABLE_K
2053      - GM_taper_scheme    = 'ldd97'    
2054    
2055    checkpoint46n_post
2056    Merging from release1_p8:
2057    o verification/natl_box:
2058      updating new external_fields_load routine
2059    o New package: pkg/seaice
2060      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2061      The sea-ice code is based on Hibler (1979-1980).
2062      Two sea-ice dynamic solvers, ADI and LSR, are included.
2063      In addition to computing prognostic sea-ice variables and diagnosing
2064      the forcing/external data fields that drive the ocean model,
2065      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2066      The implied surface heat flux is then stored in variable
2067      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2068      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2069      non-local transport term.  Because this call precedes model
2070      thermodynamics, temperature under sea-ice may not be "exactly" at
2071      the freezing point by the time theta is dumped or time-averaged.
2072      N.B.: fairly large differences in accuracy occur across
2073            different platforms/compilers; comparison between
2074            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2075            generated output gives:
2076       T           S           U           V
2077      C D M    c        m  s        m  s        m  s        m  s
2078      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2079      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2080      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2081    
2082      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2083    o GAD:
2084      - generated new common blocks to account for call of
2085        same gad routines with differing traceridentities
2086        (needed to modify tracerIdentity indices in GAD.h)
2087      - generated separate common blocks for case useCubedSphereExchange
2088        (Department of Futurology)
2089      - parameter lists to gmredi_?transport: added tracerIdentity
2090      - added new key indices to tamc.h
2091    o external_fields_load:
2092      - added this routine to TAF list
2093      - needed to make some common blocks global and additional storing
2094        along the same lines as exf package (checkpoint_lev?_directives.h)
2095    o exf:
2096      updated external forcing package
2097      - bug fixes carried over from ecco-branch
2098        (missing OBCS_OPTIONS.h in two routines)
2099      - enable easy to use "no forcing".
2100      - added exf I/O for atmospheric loading
2101      - added exf I/O for runoff data
2102      - transfered scaling between exf <-> MITgcm to exf namelist
2103    o Adding new verification experiment global_with_exf.
2104      This verification experiment is almost identical to the
2105      global_ocean.90x40x15 experiment, except that it uses
2106      the exf (and cal) package instead of the
2107      external_fields_load routine (cf README file).
2108    
2109    checkpoint46m_post
2110    o modified testscript to return -- when there are no lines of "%MON" output
2111    o added new flag "quasiHydrostatic" for QH mode
2112      and new routine quasihydrostaticterms()
2113    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2114      New routine: mom_u_coriolis_nh()
2115    o fixed sign of non-hydrostatic metric terms in u and v equations.
2116      Depend on correct sign of gravitySign.
2117    o added work.pc* to .cvsignore in aim directories using ifc
2118    o introduced flag for controllin non-hydrostatic metric terms
2119    o removed gravitySign from PARM04
2120    o switched to g77/ifc from pgf77 in aim experiments
2121    
2122    checkpoint46l_post
2123    o made convective adjustment work with pressure coordinates:
2124     - changed the direction of k-loop in convective_adjustment.F for the
2125       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2126     - adjusted the reference pressure k-index in convective_adjustment.F
2127     - adjusted the convection condition in convect.F (in analogy to
2128       calc_ivdc.F)
2129     - convective_adjustment no longer computes anything on the halos
2130     - removed the warnings about negative salinity from find_rho.F and
2131       find_alpha.F; instead the new routine look_for_neg_salinity, called
2132       at the beginning of find_rho, find_alpha, and find_beta, does a
2133       check of the entire slice, if CPP-option
2134       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2135    checkpoint46l_pre
2136    
2137    checkpoint46k_post
2138    o fixed the verification/global_ocean.90x40x15 experiment:
2139     - new bathymetry (the world according to A., JMC, and M.)
2140     - new initial fields and forcing fields (*.bin files)
2141     - new POLY3.COEFFS (for the next release one should switch to a full
2142       equation of state: JMD95P or MDJWF)
2143     - fixed several errors and redundancies in the data file
2144     - experiment uses looped cells
2145     - added matlab directory with diagnostic scripts for plotting of output
2146    
2147    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2148     - read AIM physics parameters from a file (data.aimphys)
2149     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2150    
2151    checkpoint46j_post
2152    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2153    o move wVel computation at the end of the time step, in S/R integr_continuity
2154    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2155    o update timeave pkg for wVel diagnostic.
2156    checkpoint46j_pre
2157    
2158    checkpoint46i_post
2159    o Clean up AIM package (and keep the results unchanged):
2160      include CPP_OPTION and use IMPLICT NONE in all routines ;
2161      declare all the variables _RL ; use _d 0 for all numerical constants.
2162      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2163    
2164    checkpoint46h_post
2165    o cleaned up the use of rhoNil and rhoConst.
2166      - rhoNil should only appear in the LINEAR equation of state, everywhere
2167        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2168        and the dynamical equations are all divided by rhoConst
2169    o introduced new parameter rhoConstFresh, a reference density of fresh
2170      water, to remove the fresh water flux's dependence on rhoNil. The default
2171      value is 999.8 kg/m^3
2172    o cleanup up external_forcing.F and external_forcing_surf.F
2173      - can now be used by both OCEANIC and OCEANICP
2174    checkpoint46h_pre
2175    
2176     Added code to convert surface volume flux (fresh water) into
2177     a mass flux when using P coordinates in the ocean (OCEANICP).
2178     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2179    
2180    checkpoint46g_post
2181    o Include a new diagnostic variable phiHydLow for the ocean model
2182      - in z-coordinates, it is the bottom pressure anomaly
2183      - in p-coordinates, it is the sea surface elevation
2184      - in both cases, these variable have global drift, reflecting the mass
2185        drift in z-coordinates and the volume drift in p-coordinates
2186      - included time averaging for phiHydLow, be aware of the drift!
2187    o depth-dependent computation of Bo_surf for pressure coordinates
2188      in the ocean (buoyancyRelation='OCEANICP')
2189      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2190        Theta, Salinity, and Pressure in the parameter list. This routine is
2191        presently contained in find_rho.F. This routine does not give the
2192        correct density for 'POLY3', which would be a z-dependent reference
2193        density.
2194    o cleaned up find_rho
2195      - removed obsolete 'eqn' from the parameter list.
2196    o added two new verification experiments: gop and goz
2197      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2198    checkpoint46g_pre
2199    
2200    checkpoint46f_post
2201    o Enable tangent linear (forward mode) gradient checks:
2202      - extended active file handling to g_... files
2203      - added TANGENT_SIMULATION to theSimulationMode
2204      - extended grdchk package accordingly
2205    o added tangent linear setup in verification/carbon/code_ftl
2206    o added adjoint setup in verification/front_relax/code_ad
2207    
2208    checkpoint46e_post
2209    o Added new equation of state -> MDJWF
2210      - EOS of McDougall et al., 2002, JAOT, submitted
2211      - caveat: the equation of state is only valid for a smaller (more
2212        realistic?) range of values than JMD95P/Z and UNESCO
2213      - added masks to the calculation of pressure in store_pressure
2214      - added more check values for density in check_eos (ini_eos.F), some of
2215        the old check values are out of the range of the MDJWF-eos, so don't
2216        expect perfect matches for those
2217    checkpoint46e_pre
2218    
2219    checkpoint46d_post
2220    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2221      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2222      case of pressure coordinates. eosType='JMD95Z' in
2223      combination with buoyancyRelation='OCEANICP' now causes an error.
2224    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2225      in find_alpha/beta.
2226    checkpoint46d_pre
2227    
2228    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2229      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2230    
2231    checkpoint46c_post
2232    o Changes necessary for ocean in p-coordinates
2233     -  Added new buoyancy relation = 'OCEANICP'
2234     -  Added new parameters = gravitySign (this used to be contained inside
2235        the factor dRdZ which I added when we first switched to R coordinates).
2236     X GM/Redi is not compatible (yet)
2237     X bottom drag and no-slip need to be debugged.
2238    checkpoint46c_pre
2239    
2240    checkpoint46b_post
2241    o Added new equation of state -> JMD95Z and JMD95P
2242      - EOS of Jackett and McDougall, 1995, JAOT
2243      - moved all EOS parameters into EOS.h
2244      - new routines ini_eos.F, store_pressure.F
2245    o Added UNESCO EOS, but not recommended because it requires
2246      in-situ temperature (see JMD95)
2247    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2248      unesco.f to be used with POLY3
2249    checkpoint46b_pre
2250    
2251    checkpoint46a_post
2252    o Added (atmospheric) pressure loading
2253      - new field in FFIELDS.h, etc...
2254      - new cpp flag ATMOSPHERIC_LOADING
2255    o Changed hFacC to _hFacC in calc_phi_hyd.F
2256    o Added SHORTWAVE_HEATING to some files for consistency
2257    checkpoint46a_pre
2258    
2259    checkpoint46
2260    further merges from release1_p5
2261    o new ctrl package
2262      - adopted from ECCO environment to enable optimization
2263      - added Eliassen Palm fluxes to controls
2264    o added Eliassen Palm flux controls to gradient check package
2265    o cost package
2266      - Compatible with new ctrl package
2267      - added Eliassen Palm cost hooks
2268      - modif's of existing cost functions
2269    o Adjoint-related bug fixes in kpp:
2270      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2271      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2272    o autodiff package
2273      - flow directives:
2274        + new for S/R do_the_model_io
2275        + enhanced for S/R checkpoint
2276        + new gmredi.flow
2277      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2278        disable adcommon.h/g_common.h by default.
2279      - fixed problem for adjoint of global_max
2280    o modified verification/carbon/
2281    o New setup for adjoint of global_ocean
2282    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2283    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2284    o incorporated hooks for sponge layer code (external_forcing.F)
2285    
2286    checkpoint45d_post
2287    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2288    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2289      (affects plume_on_slope "cg2d" output)
2290    o add new parameter deltaTfreesurf for free-surface time stepping
2291    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2292    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2293    o change phiMin in exp1 (to agree with documentation)
2294    o add new flags:
2295     - T,S forcing inside/outside Adams-Bashforth
2296     - turn off temp,salt advection and/or forcing
2297     - for each tracer, define internal flag for multiDimAdvection & A-B
2298    o monitor: change definition of KE to check conservation of Energy
2299    
2300    checkpoint45c_post
2301    o Removed f90 comments ("!")
2302    o Modified initialisations to enable exf package for MITgcm
2303      (without invoking ECCO_PACKAGE).
2304    o modifications to gradient check package (Martin Losch)
2305      - enable centered differences
2306      - modified format of standard output
2307    
2308    checkpoint45b_post
2309    o cleaned exchange calls in cg2d
2310    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2311    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2312      to configure barotropic setup (Martin Losch)
2313    o moved some initialisations within bi,bj loop in dynamics
2314      (TAF flow dependency)
2315    o in initialise_varia, moved call packages_init_variables
2316      before convective_adjustment_init
2317      (corresponding adjustment of TAF tape initialisation).
2318    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2319    
2320    checkpoint45a_post
2321    o compute Rho over the whole domain (extend iMin,jMin indices)
2322    o specific exchange for X-slice domain (case Ny=1)
2323    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2324    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2325    
2326    checkpoint44h_post = checkpoint45
2327    o Fix to restore differentiability:
2328      place at which packages_init_variables is called in
2329      initialise_varia is crucial for reverse control flow.
2330    o modifications in GMRedi to enable stable adjoint
2331      (corresponding modif's in thermodynamics, dynamics)
2332    o added missing hook for sponge layer code in external_forcing
2333    o modified test cost functions
2334    o storing in gad_advection (plus removal of write(0,*)!
2335    o missing headers TR1.h added in convective_adjustment routines
2336    o errorMessageUnit set non-equal zero in eeboot
2337      (conflict on some platforms, e.g. IBM SP3)
2338    o modified carbon verif.
2339    
2340    checkpoint44h_pre
2341    o vertical grid option: allow to put the Interface at the middle between
2342      2 cell-centers ; replace delZ in pkg/kpp by drF.
2343    o GM Advective form: Tracers are advected using the residual transport (=
2344      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2345    
2346    checkpoint44g_post
2347    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2348      results) ; ifdef missing in thermodynamics.F
2349    
2350    checkpoint44f_pre,checkpoint44f_post
2351    o added PTRACERS package
2352      This allows an arbitrary number of passive tracers to be integrated
2353      forward simultaneously with the dynamicaly model.
2354      + Implemented so far:
2355        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2356        - I/O and checkpointing
2357        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2358      + Not implemented so far:
2359        - KPP
2360        - OBCS
2361      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2362        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2363        line in data.pkg.
2364      + This package is disabled by default since it increases storage.
2365    
2366    
2367    o testscript: added -cleanup option
2368    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2369                 b) enable to filter 2D fields.
2370    
2371    checkpoint44e_pre,post
2372    o re-wrote convective adjustment to use pre-calculated weights
2373      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2374      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2375      Original calls to convect() still in place.
2376    
2377    chkpt44d_pre,post
2378    o added missing EXCLUDE_MONITOR flags
2379    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2380      (incompatible typ in MIN/MAX expressions caused problems
2381      on IBM SP3)
2382    o in genmake added variable MAKEDEPEND
2383      plus resetting for case SunOS
2384    o added timer_stats.c routine for IBM SP3
2385    o removed variables in dynamics
2386    !!! I forgot to create tag chkpt44d_pre !!!
2387    !!! But chkpt44d_pre = chkpt44c_post    !!!
2388    
2389    o real fresh water flux implemented with non-linear free-surface.
2390    
2391    chkpt44c_pre,post
2392    o few fix (mask in shap_s2, EmPmR in external_field_load,
2393      USE_NATURAL_BCS in solve_for_P);
2394    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2395    
2396    checkpoint44b_pre/_post
2397    o merge of relevant stuff from the ecco-branch:
2398      - genmake: removed $S64 overwrite for case SunOS
2399      - pkg/exf: update and corrections for field swapping and obcs
2400      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2401                  harmonized between ECCO and MITgcm
2402      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2403                      updated checkpointing_lev... lists for obcs
2404      - model/src: minor changes in forward_step, plot_field
2405                   added directive for divided adjoint in the_main_loop
2406      - pkg/mdsio: added mdsio_gl_slice
2407    
2408    o check parameters & config (chkpt44a_pre,post)
2409    o OBC and NonLin_FrSurf.
2410    
2411    checkpoint44
2412    o fix bug in mom_vi_del2uv
2413    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2414    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2415    o update AIM experiments (NCEP input files)
2416    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2417    o added some stuff for AD
2418    
2419    checkpoint43
2420    o added two new advection tests
2421    o added global 4x4 degree ocean test
2422    o added test of H&S94 with free surface on cube
2423    o some final mods for gradient check, adjoint,...
2424    
2425    checkpoint42
2426      Fixed AD-related problems:
2427    o Store directives up-to-date with re-arranged Adams-Bashforth
2428      (mainly thermodynamics.F)
2429    o New store directives for multi-dim. advection schemes
2430      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2431      * new common block and key passkey
2432      (mainly gad_advection.F)
2433    o Modified store directives for split of dynamics/thermodynamics
2434      for the case ALLOW_KPP
2435    o Cleaned argument list for timestep_tracer.F
2436    
2437    checkpoint41
2438    o re-formatted/added comments in prologues of key subroutines
2439      to work with protex
2440    
2441    checkpoint40
2442    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2443    o added FLT (floats) package from Arne along with demo. experiment
2444    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2445      implementation of forward-in-time forcing terms
2446    o more mods for non-linear free-surface including new variable
2447    o modified multi-dim method to work on cube
2448    o bug fix in KPP (from DM)
2449    
2450    checkpoint40pre9
2451    o added DST advection schemes
2452    o fix MPI bug on SGI's
2453    o modifications for non-linear free-surface
2454    o fixed conditionals for fixed flow/passive tracer only mode
2455    o added tension/strain form of stress tensor
2456    o changes to commenting of arguments for TAF/TAMC
2457    o added/updated many matlab scripts
2458    o added multi-dimensional advection method for tracers
2459      
2460    checkpoint40pre8
2461    o new package rw/
2462      Added method for dumping intermediate local arrays:
2463      mdsio_writetile - same as mdsio_writefield except works from inside
2464                        bi,bj loop
2465      mdsio_writelocal - same as mdsio_writetile except works for local
2466                         arrays
2467      write_local_r? - higher-level wrapper for mdsio_writelocal
2468      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2469      Example given at end of mom_vecinv.F that dumps some local arrays.
2470    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2471      control flux-form versus vector invariant code.
2472      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2473      or genmake -DISABLE ...
2474    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2475      (additional storing is now needed for case vecinv;
2476      currently nothing implemented to switch this storing off
2477      in case fluxform is used since no CPP flag available).
2478    
2479    checkpoint40pre7
2480    o bug fix in dynamics.F
2481      calc_viscosity called before k=1,Nr loop.
2482    o added some #ifdef's ALLOW_PASSIVE_TRACER
2483    o cleaned initialisations in ctrl_map_ini
2484      related to TAF
2485    
2486    checkpoint40pre6
2487    o split dynamics into thermodynamics & dynamics
2488    o corresponding split of calc_diffusivity into
2489      calc_diffusivity, calc_viscosity
2490      (kpp_calc_diff, kpp_calc_visc).
2491    o Added diffkr, kapgm to control variables
2492    o bug fix in gmredi_slope_limit for ldd97
2493    
2494    checkpoint40pre5
2495    o proper initialization of Adams-Bashforth time stepping
2496      + uses forward step for very first step of model (iter=0)
2497    o re-generated *all* output since almost all output is modified by this
2498      change (sorry but we've been putting this one off for about 2 years)
2499      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2500        *not* regenerated since they are already out of date and I don't
2501        want to create the impression that they are suddenly working.
2502    o removed KAP stuff for DEC's
2503    o modified/added many .cvsignore files in */code and */input
2504    o added new expt "solid-body.cs-32x32x1"
2505      + this uses an alternative form of ini_curvilinear_grid.F which
2506        is not necessarily any better than the current one...
2507    
2508    checkpoint40pre4
2509    o added re-initialisations of utrans,vtrans,rtrans in
2510      calc_common_factors which are crucial for TAF.
2511    o extended iMin,jMin range for calc_common_factors,
2512      calc_diffusivity
2513    o added option ALLOW_PASSIVE_TRACER
2514    o a few minor updates and fixes
2515    
2516    checkpoint40pre3
2517    o created calc_gtr1.F for gad package
2518    o split the_main_loop and re-introduced forward_step
2519    o some recomputations of nIter0 for TAMC
2520    
2521    checkpoint40pre2
2522    o Updated to latest branch of AJA, JMC
2523    o Added gradient check package
2524    o Added routines for passive tracer handling
2525    o Added carbon sequestration sensitivity experiment
2526    
2527    checkpoint39
2528     o Modifications and fixes to support TAMC
2529       (mainly missing or wrong directives)
2530     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2531       in addummy_in_stepping
2532     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2533     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2534     o Included following packages:
2535       cal: calendar
2536       exf: external forcing
2537       ecco: essential routines to control use of cal, exf
2538             (NB: this is not the full ECCO environment)
2539     o disabled some packages by default in genmake
2540    
2541    checkpoint38
2542     o see notes_c37_adj.txt
2543     o corrected wrong layer index in external_forcing_t
2544     o replaced the_main_loop/forward_step by the_main_loop
2545     o removed forceoutput from write_state
2546       (replaced criteria for initial/final state)
2547     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2548    
2549    checkpoint37
2550     o mdsio.F routine split and packaged in pkg/mdsio
2551       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2552        used unless genmake -disable=mdsio)
2553     o allow a more precise surface-geopotential gradient for the atmosphere
2554       taking into account the change in space of Alpha (=1/rho) at the surface.
2555     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2556       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2557     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2558       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2559       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2560     o Time-Average diagnostics defined as a pseudo package "timeave".
2561     o pickup files : old pickup (before c35) did not work with new code (c35
2562       and after) unless activating 2 commented lines in initialise-varia.
2563     o Non-Hydrostatic pickup file Pb fixed.
2564     o bug with Rigid-lid version (since c35) fixed.  
2565    
2566    checkpoint36
2567     o implement Crank-Nickelson barotropic time-stepping
2568     o recover Time-Average diagnostics
2569     o fix Pb in checkpoint (PR#19)
2570     o AIM become a standard package ; clean unused CPP_kees
2571    
2572    checkpoint35
2573     o subtantial rewrite of dynamics.f
2574     o allows staggered time-stepping
2575     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2576     o added bottom drag (linear + quadratic)
2577    
2578    checkpoint34
2579     o Modified exchange routines for correct reverse simulation.
2580     o Added verification output to comply with bug fix in impldiff.F
2581       as of c33 (exp2, natl_box).
2582     o Corrected store directives in dynamics.F
2583     o Corrected array boundaries in impldiff.F
2584     o Corrected array dimensions in gmredi.
2585       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2586     o Added routine GLOBAL_SUM_INT to global_sum.F
2587     o Added mdsio_gl.F for ECCO purposes.
2588    
2589    checkpoint33
2590     o Fixed bug in lower BC in impldiff.F
2591     o Fixed confusion about units of forcing arrays in FFIELDS.h
2592       namely Fu,Fv,Qnet,Qsw,EmPmR:
2593       - Removed verification/natl_box/code/external_fields_scale.F
2594         (did not differ from that in model/src)
2595       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2596         (see FFIELDS.h for description)
2597       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2598         kpp_calc.F and kpp_transport_t.F
2599       - Removed model/src/external_fields_scale.F and calls to it
2600       - verification/natl_box uses flux data with "atmospheric" sign so
2601         a special version of external_fields_load.F is used to
2602         change the data as it's read in. This way, the arrays
2603         have the right units and signs at all times tha a user could
2604         possibly use them.
2605     o Corrected genmake to delete a temporary file during configuration
2606    
2607    checkpoint32
2608     o Scaling of forcing fields moved from external_forcing.F to
2609       external_fields_scale.F, called directly after loading fields.
2610     o Surface relaxation terms added to surface tendency fields in
2611       extra subroutine.
2612     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2613       fields.
2614     o Changes in GMRedi to comply with packaging structure.
2615     o Modifications and bug fixes in KPP package.
2616     o Verification experiment for KPP added (verification/nat_box/)
2617    
2618    checkpoint31
2619     o Packages interface brought in line with defined standard
2620       -> new routines packages_...F
2621       -> changes in initialise_fixed.F, initialise_varia.F
2622       -> enables initialisation interface for ECCO package
2623     o Rescaling of external forcing fields immediately after read
2624       (removed from external_forcing.F)
2625       -> new: surface_fields_scale.F
2626       -> affects ini_foorcing.F, external_fields_load.F
2627     o Computation of surface tendencies before tendency updates.
2628       -> new: external_forcing_surf.F
2629     o Change of variable names useGMRedi, useKPP, useECCO
2630     o Further changes in dynamics.F, impldiff.F for TAMC
2631     o Tested for experiments 0, 2, 4.
2632       - not yet tested for GMRedi.
2633       - not yet tested for KPP.
2634    
2635    checkpoint30
2636     o Updates for OBCs
2637     o New experiment for test OBCs (internal_wave)
2638     o New output.txt in verification/exp4/results/
2639     o Updates for KPP: calculation of viscosity corrected, new variables
2640       kpp_dumpFreq and kpp_taveFreq
2641     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2642       and entry for T90 in genmake
2643    
2644    checkpoint29
2645     o packaged KPP and GM/Redi
2646    
2647    checkpoint28
2648     o Corrected initialization of hFacMin for difference vertical coordinates
2649     o Modified calculation of partial cell thickness to more robust algorithm
2650     o config_summary.F: replaced write_1D_... by write_0D_...
2651       read_write.F: added subroutines write_0D_...
2652     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2653       included some initialisations required for TAMC.
2654     o routine calc_isoslopes: modified sqrt computation to make it
2655       differentiable for zero argument.
2656     o routines dynamics, impldiff:
2657       included store directives and tape key computations required for TAMC.
2658     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2659    
2660    checkpoint27
2661     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2662       formulation works properly with variable resolution.
2663     o restructured the calling tree between the_model_main() and dynamics()
2664     o split initialise() into initialise_fixed() and initialise_varia()
2665     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2666       in new routine ini_psurf()
2667    
2668    checkpoint26
2669     o moved some #ifdef in optional routines to encompass everything
2670       except the argument declarations. This was using up some memory.
2671     o fixed macros like _ADT to work with both versions of Linux cpp
2672     o cleaned up some unused and uninitialized variables
2673       (helps when debugging with strict compile options)
2674     o split up CPP_EEOPTIONS.h into options and macros
2675       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2676     o patch for 2 processor JAM mode
2677    
2678    checkpoint25
2679     o updates for OBCs and NH
2680     o dramatically reduced memory usage
2681     o added "JAM" routines for use on Artic network
2682     o parameterization of convection by implicit vertical diffusion
2683     o added a diagnostic of convective index
2684     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2685       (this is was partly for OBCs and NH but also in anticipation of
2686        an explicit free-surface option)
2687     o initial state input files for U and V
2688    
2689    checkpoint24
2690     o Removed some spurious "REAL"s
2691     o Updated KPP to latest version from JPL
2692     o Added a COS(latitude) in horizontal viscosity
2693    
2694    checkpoint23
2695     o Added del^4 diffusion for salt and temperature
2696     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2697    
2698    checkpoint22
2699     o Made many small changes: implicit none, format(i5), etc...
2700     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2701    
2702    checkpoint21
2703     o Introduced new I/O package that supports direct-access records (mdsio.F)
2704     o Split-up mid-level I/O routines
2705     o Updated input data for experiments 0,1,2,4 and 5
2706     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2707    
2708    checkpoint20
2709     o Tidied up open-boundaries some more
2710     o Added non-hydrostatic code
2711     o Fixed some input data
2712     o Modified MPI start-up to work in "coupled" context.
2713    
2714    checkpoint19
2715     o Tidied up directory structure for verification experiments.
2716     o Added new code for open boundaries.
2717     o Corrected advective terms near boundaries.
2718     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2719     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2720     o Split default parameters out of ini_parms.F into set_defaults.F.
2721    
2722    checkpoint18
2723     o Further changes for optional code generation with
2724       CPP - ugh!
2725    
2726    checkpoint17
2727     o Beginning to incorporating modularity
2728       for supporting atmos. and ocean configs.
2729     o Small changes for TAMC complinace
2730     o New ultra simple test case. Barotropic box
2731       configuration "exp0".
2732    
2733    checkpoint16
2734     o Minor changes to exchange routines to support
2735       accumulation in reverse mode. Adjoint of an
2736       assignment is an addition.
2737     o Changes to support compilation by TAMC (LR(1)
2738       syntax) and by g77 under Linux ( 72 character
2739       limit ).
2740    
2741    checkpoint15
2742     Rewrote exchange routines to allow
2743     o General tile <-> tile connectivity.
2744     o TAMC reverse mode flag ( is this really needed? )
2745     o Variable width overlap and exchange region widths.
2746     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2747       shmput/shmget, VIA, SYSV shmem and every other cool
2748       communication method.
2749    
2750    checkpoint14
2751     Consistent isomorphism chages made. These allow dynamical core
2752     to support both pressure and meters as a vertical coordinate.
2753    
2754    checkpoint13
2755     Release which corrects global_max problem and a couple
2756     of KGM time-averaging diagnostic errors. Also contains
2757     a double-gyre experiment setup as well as the baseline
2758     4 degree global template. The double gyre template is
2759     organised to allow it to be applied automatically to
2760     the baseline configuration.
2761    
2762    branch-point-rdot
2763     A few tidy-ups have been made bt the real point of this
2764     check-point (excuse the pun) is to allow a branch to be
2765     made for the purposes of adding the rDot alterations.
2766     I don't want to commit the rDot to the main-trunk until
2767     we've actually tested it...
2768    
2769  checkpoint12  checkpoint12
2770   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
2771   configure script).   configure script).

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