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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.619 by mlosch, Fri Mar 3 07:52:57 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 seaice:
8      - correct units of turning angles (now they are really in degrees)
9      - move computation of GWATX/Y out of main routine into dynsolver
10      - initialize GWATX/Y in seaice_init
11    o Apply mask on Fresh-Water flux (needed for SSH forcing).
12      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
13    o seaice: add runtime flags for turning angles (default to zero)
14    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
15      and trend from exf forcing and ctrl control adjustments
16    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
17      (since checkpoint57x_post)
18    o change the default rotation period to 86164.s = the Earth rotation
19    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
20      and based on a reference stratification. Tested within hs94.cs-32x32x5.
21    o seaice advection: add code for choosing between the default (2nd order
22      central differences) and multiDim advection schemes provided by
23      pkg/generic_advdiff
24    o seaice:
25      - removed all references to SEAICE_GRID.h fields from
26        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
27        (cubed-sphere configuration will change a little)
28      - grid computations in seaice_init are obsolete now.
29      - cleaned up code a little so that is easier to read (hopefully).
30      - added new (better?) discretizations of default advection and diffusion
31        (turn on with SEAICEuseFluxForm)
32      - replace 1 in 3d global fields by kSurface in growth.F
33      
34    checkpoint58a_post
35    o seaice:
36      - bug fix in advect.F
37    o shelfice:
38      - separate shelfice load anomaly from pload (breaks with time
39        dependent forcing), => introduce constant field shelficeLoadAnomaly.
40        Its default is 0., but it may be computed more cleverly from (unknown)
41        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
42        done offline. A good approximation of the pressure load anomaly is
43        necessary to avoid large initial adjustment processes underneath
44        deep-reaching shelfice.
45      - small fix in ISOMIP shelfice_thermodynamics
46      - add more sophisticated thermodynamics of Hellmer (1989), this is
47        now the default
48      - give a few constants more intuitive names
49    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
50      if bulk formulae are used in long integration (especially EmPmR). Turn
51      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
52      if balancePrintMean, the imbalance that is substracted is printed to
53      STDOUT.
54    o fix bug (typo) in obcs_apply_eta.F
55    o add a new package shelfice which enables us to model the circulation
56      underneath shelf-ice with draughts of hundreds of meters.
57     - works
58     - to do: + include improved thermodynamics
59              + check whether kSurfC (from model/inc/SURFACE.h) can be used
60                instead of new field kTopC
61              + can we use topoFile, Ro_surf and existing code in ini_depth.F
62                instead of new field R_shelfIce and new code in ini_depth.F
63                and ini_mask_etc.F?
64              + adjust vertical mixing schemes?
65    o seaice pkg:
66     - add a cpp-flag to include a simple formula for a salinity dependent
67       freezing point of sea water at the surface
68     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
69       meridional stresses are now different (and hopefully correct)
70    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
71       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
72       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
73    o pkg/diagnostics: add options and parameters for regional-statistics
74       diagnostics ; define regions by reading a region-mask from a file
75       (might add other options later)
76    o pkg/bulk_force:
77     - add option and parameters to use AIM surface-flux formulae.
78     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
79       others forcing fields (defined in PARM05, parameter file "data") are loaded
80       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
81     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
82     - use the right EXCH call for uwind,vwind (to work on CS-grid).
83     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
84       and parameters (note: calcWindStress replaces .NOT.readwindstress).
85     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
86    
87    checkpoint58
88    o add "--embed-source" option to genmake2 which, when the supporting
89      tools can be compiled (as determined by genmake2) will turn on the
90      embed_files package which then embeds the entire MITgcm source code
91      (*.[fFhc] + Makefile) used for the build within the executable
92      - requested by CNH but off by default
93      - adds a paltry <9MB to the mitgcmuv executable in most cases
94      - only writes the output when useEMBEDSRC in eedata is true
95    o clean up 3-dim. relaxation codes:
96      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
97      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
98      * Thanks to Tom Haine for testing!
99    
100    checkpoint57z_post
101    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
102      affects output (@ truncation level) of exp. plume_on_slope ; updated.
103    o fix the pickup behavior for obcs in combination with ptracers
104    o fix a bug in ptracers_external_fields_load
105    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
106      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
107    o transfered surface NH pressure to eta field (if exactConserv).
108    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
109         and update lab_sea output.txt file.
110    o completing 3-dim. relaxation code: additional term
111         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
112      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
113      * At compile time, in "EXF_OPTIONS.h" set
114          #define  ALLOW_CLIMTEMP_RELAXATION
115          #define  ALLOW_CLIMSALT_RELAXATION
116      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
117          tauThetaClimRelax3Dim = 15552000.0,
118          tauSaltClimRelax3Dim  = 15552000.0,
119      * 3 cases:
120          1) Use a constant-in-time 3-dim. field
121          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
122          3) Real-time relax. to time-evolving prescribed field
123    o Adding Laplacian-type smoothness constraint on
124      initial and boundary (forcing) controls (ic, bc)
125      * enable at compile-time via
126        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
127      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
128      * Absolute scale somewhat unclear so far
129      * no area weighting was included since no other cost term does so far
130    
131    checkpoint57y_post
132    First step for a NLFS adjoint
133    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
134    o new init. routines for calc_r_star, calc_surf_dr
135    o still need to deal with ini_masks_etc
136    o testreport seemed happy
137    checkpoint57y_pre
138    
139    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
140    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
141    o add new offset feature to offline pkg (plus minor cleanup)
142    o cfc fixes for final year of integration
143    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
144      be in GCHEM_OPTIONS).
145    
146    checkpoint57x_post
147    o fix testreport Pb in multiple test experiment.
148    o cleanup our namelist syntax in verification:
149      - make it more F95 standards compliant (some work still needed)
150      - allows the vast majority of our tests to work with gfortran
151    o Non-Hydrostatic:
152     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
153     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
154    o Allow to apply AB on T,S rather than on AB(gT,gS):
155     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
156     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
157       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
158     - need a "clever" read_pickup to restart from the other AB formulation
159    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
160    o remove some unused variables (reduces number of compiler warnings)
161    o adjoint
162      * Disable useVariableViscosity for adjoint for time being
163        (there are a number of extensive recomputations)
164      * Initialize certain variables needed for adjoint
165    
166    checkpoint57w_post
167    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
168                 fix the singleCpuIO RS version of MDSWRITEFIELD
169       and add a WARNING if using globalFiles=T with multi-processors.
170    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
171      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
172    o tracer advection scheme:
173      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
174       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
175       was not very convenient).
176      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
177       (further tests needed for the implicit DST & Flux-Limiter schemes).
178    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
179      and sRef for convenience, handy, when you want to initialize
180      ptracers in a large domain with a constant non-zero value. Also,
181      untangle ptracers_init.F a little.
182    
183    checkpoint57v_post
184    o change dome exp. to use variable viscosity in side-drag terms.
185    o remove all the files from the cfc_offline test since they are now
186      incorporated into tutorial_cfc_offline which has been producing
187      identical results for a few days of testing
188    o add new parameter: sideDragFactor to enable half-slip-side BC
189      and change side-drag S/R to use viscosity from mom_calc_visc
190      (can switch back by setting sideDragFactor=0.); affects results at
191      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
192       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
193    o vorticity & strain are now computed without masking, to account for
194      no-slip-side BC in variable viscosity calculation ; mask is applied
195      anyway later on, before computing advection/coriolis terms.
196    o modify exp4 to test new obcs support for reading from external files
197      and for passive tracers
198    o fix behavior of ptracers_monitor when monitor output is written to a
199      netcdf-file; still not independent of monitor.F (writes in the same
200      file).
201    o change default value of tRef (put a uniform, meaningful value for ocean
202      & atmos) and initialize sRef (was missing, as Martin mentioned).
203    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
204      to be proportional to enstrophy dissipation length.  Thus,
205       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
206      This is now consistent with Smagorinsky and with the manual.
207    
208    checkpoint57u_post
209    o OBCS and PTRACERS: add open boundary support for passive tracers
210      - either use homogenous (pseudo) v.Neumann conditions or prescribe
211        OB-values from file; this is not different from the way theta and salinity
212        are treated
213      - however, Orlanski-radiation conditions are not supported, and the model
214        will stop if you use pTracers and Orlanski at the same time.
215      - beefed up the rountine obcs_external_fields_load: now only those open
216        boundary values are overwritten with values from files for which there
217        are really files, otherwise the OB-fields remain untouched. This makes
218        it possible to use different OBs at different ends of the domain (as
219        with EXF)
220    o reduce number of exch calls in shap_filt (s2).
221    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
222      truncation level) 4/5 MLAdjust test results (11&12 digits match).
223    
224    checkpoint57t_post
225    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
226    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
227      same truncation, independent of the face number: affects affects several
228      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
229    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
230      note that biharmonic viscosity + no-slip was not tested in any experiment.
231    o fix bug in non-linear free-surf side-drag ; generate new output for
232      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
233    o make mnc honor the writeBinaryPrec flag for most kinds of output
234    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
235    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
236      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
237    o add brackets in multi-terms sum to get same truncation, independent of
238      the face number (manage to get exactly same value of gU,gV at the cs-edge)
239      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
240    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
241      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
242      a maximum grid-scale Reynolds number.  Also, changes all length calculations
243      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
244      Suggested values of viscosity parameters found in mom_calc_visc.
245      Many new viscosity diagnostics available.
246    
247    checkpoint57s_post
248    o Add clearing-house for viscosity calculations, mom_calc_visc and
249      correct numerous bugs in LeithD and Smagorinsky discretizations.  
250      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
251      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
252      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
253      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
254      The Strain-Tension form is now called with useStrainTensonVisc=.true.
255      ViscAhStrain and viscAhTension are now retired.
256    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
257    o In response to JMC's bug report, genmake2 now ignores any soft-links
258      that it finds in the *current* directory when searching for files.
259      Soft-links found in any other source directories will still work as
260      they did before.
261    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
262      a C routine to unlimit the stack size
263    o mnc-ify pkg/aim snapshot vars
264    o mnc-ify pkg/land as requested by Daniel
265    o various changes to mnc including:
266      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
267      - output can now be grouped so that all files within a group
268          change the ITER portion of their names in lock-step together
269      - can now read ("global") PER-FACE (in addition to PER-TILE) files
270          and works with both EXCH1 and EXCH2 (but needs more testing)
271      - writing works for all verification test cases w/ g77 on Linux
272    
273    checkpoint57r_post
274    o make MNC variable initialization happen earlier
275    o add diagnostics for (almost) each term of the momentum Eq.
276    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
277    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
278    o remove MINIMAL_TAVE_OUTPUT option ;
279      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
280    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
281      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
282    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
283    o add time-dependent SST, SSS control
284    o cost terms in ecco/ modularized (new cost_generic.F)
285    o cost_averages routines are modularized (new cost_averagesgeneric.F)
286    o new infrastructure for seaice model vs. obs misfits in seaice/
287      * driver from the_main_loop.F is seaice_cost_driver.F
288      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
289      * gradient check in Exp. 6a of natl_box_adjoint/
290    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
291      (see README file)
292    
293    checkpoint57q_post
294    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
295    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
296      - bug was reported by Jean-Michel and Ian Fenty
297    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
298      update exp. cpl_aim+ocn output.
299    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
300      Needed for high-res. runs with large global files
301      to be able to limit tapelev size
302    o Changed some tests for adjoint:
303      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
304      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
305      * global_ocean.90x40x15/ back to default 3-level checkpointing
306    o Modifications to enable scripted COMMON to MODULE conversion
307      * verification/OpenAD/code/ has necessary scripts and description;
308      * converts, compiles and runs successfully;
309    
310    checkpoint57p_post
311    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
312    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
313      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
314    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
315    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
316      (was already the case for dissipation with mom_vecinv,
317       and also the case for grad.PhiHyd when staggered-timeStep)
318      This will allow to put dissipation out-off the AB time-stepping.
319     Unfortunately, affects truncation error. Update output of exp. that "fails"
320      (cg2d matching number) and leave the others for later: front_relax(10),
321      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
322      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
323    
324    checkpoint57o_post
325    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
326      (2) its ready to be documented during the 20050801 DocFest
327    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
328      for ideal_2D_oce and lab_sea on linux_ia32_g77
329    o set to #undef CTRL_SET_OLD_MAXCVARS_30
330      in global1x1_tot/code_seaice_adj to access indices 32, 33
331      (worth another tag)
332    
333    checkpoint57n_post
334    o adding precip control xx_precip 32
335    o adding swflux control xx_swflux 33
336    o Replacing 10 forcing penalty cost routines by 1 generic.
337    o Implementing partitioning in time-mean and variable adjustment
338      for atmos. state.
339    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
340    o in natl_box_adjoint:
341      * updated exp 1 to 10
342        (but does not have time-mean vs. variable split results yet)
343    o updated global1x1/*_seaice_adj/
344      to incorporate latest changes
345    o enable useSingleCpuIO for mdsio vector routines
346      (applies in particular to tapelev I/O)
347    o removed inefficient K-loop in all active_file*control*.F
348    
349    checkpoint57m_post
350    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
351      and advect_cs (use EXCH-2 and standard cs-32 grid files).
352    o pkg/exch2: filling of face-corner halo regions is optional
353      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
354    
355    checkpoint57l_post
356     tag before updating tutorials (pre-release-2)
357    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
358       for output and interpolation of input fields onto model grid)
359    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
360       Affects results of exp. rotating_tank ; update output.txt.
361    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
362          and taking the square quantity and/or using a fraction-weight field.
363    o fix aim_diagnostics_init.F mate numbers.
364    o add mnc output capability to diagnostics/diagstat and update
365      our cvsignore files for the ACSII output generated
366    
367    checkpoint57k_post
368    o lab_sea now uses diagnostics package and provides a suite of
369      new EXF diagnostics output.
370    
371    checkpoint57j_post
372    o exf
373      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
374        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
375        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
376      * extended diagnostics output
377        - now includes all EXF variables
378        - hs, hl moved to common block
379        - separate S/R for diagnostics, called after ctrl vector is added
380        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
381        - EXFqnet contains true Qnet (i.e. includes qsw)
382      * updated verif. lab_sea, global_with_exf
383      * Rearranging hflux (exf_mapfields -> exf_getforcing)
384        to ensure that diagnostics sees a true EXFqnet
385    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
386    o diagnostics pkg: change pointers so that 1 diagnostic can be used
387      several times with different frequencies.
388    o mnc-ify the thsice package as requested by Daniel Enderton
389      - the monitor--MNC output needs work
390      - many attributes need to be added (most are currently blank)
391    o mnc-ify theaim_v23 package as requested by Daniel Enderton
392      - many attributes need to be added (most are currently blank)
393    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
394    o add Sadourny like discretization to the 4th.O vorticity advection scheme
395    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
396      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
397         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
398    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
399     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
400    
401    checkpoint57i_post
402    o Diagnostics package was changed: diagnostic allocation is now deactivated
403      by setting an empty file name in the namelist (used to be by setting 0 frequency)
404    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
405      add 1rst Order upwind vertical Shear.
406    o add a quick fix for A/B checkpointing in OFFLINE mode
407    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
408      end-run around the C/Fortran linking horror in eesup/src/timers.F
409    o added pkg/runclock: allows user to terminate run based on wall clock
410    o added non-hydrostatic scaling parameter: nh_am2
411    o pkg/my82: futile attempt to make results compiler-independent by adding
412      some "_d 0", etc. no effect.
413    o for mnc output, fill the 'T' coordinate var with myTime and create a
414      separate 'iter' variable for iteration count
415    o pkg/diagnostics:
416      add new capability: output of Global/Regional & per-level statistics ;
417      tested against monitor output (including land & thSIce) on various exp.
418    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
419    
420    checkpoint57h_done
421      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
422      data.diagnostics, data.gchem, data.ptracers) is done.
423    
424    o pkg/diagnostics: prepare for Global/Regional statistics.
425      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
426    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
427      and rename it: DIFFERENT_MULTIPLE
428    
429    checkpoint57h_post
430    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
431    o pkg/diagnostics: change output frequency, now in seconds (instead
432      of Nb of iterations). This requires to change data.diagnostics.
433    checkpoint57h_pre
434    
435    o in mnc, let the user create the output dir if both mnc_outdir_date
436      and mnc_outdir_num are false
437    o add fflags() to pkg/diagnostics which allows one to specify, on a
438      per-file basis, the file precision [default behavior is unchanged]
439    o added diagnostics to pkg/kpp, including computation of mixed layer
440      depth based on a temperature/density criterion
441    o updated verification/natl_box to test the new pkg/kpp diagnostics
442    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
443    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
444    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
445      not mnc -- this mistake was found by JMC and is now corrected
446    
447    checkpoint57g_post
448    o add Adams-Bashforth 3rd Order time stepping:
449      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
450      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
451    checkpoint57g_pre
452    
453    o make lambda[Theta,Salt]ClimRelax spatially varying
454      (default remains spatially uniform constant based on tau)
455    o added new control variables
456      * init. uVel, vVel, etanN
457      * lambda[Theta,Salt]ClimRelax
458    o separate masks used for ctrl_pack/unpack 'from write_grid' output
459      (suggested by G. Forget)
460    
461    checkpoint57f_post
462    o add parameter "baseTime" = model base time = time at iteration zero
463      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
464      account for baseTime shift
465    o move Coriolis arrays from PARAMS.h to GRID.h
466    checkpoint57f_pre
467    
468    o mnc-ifying the seaice package
469    o introduced an alternative length scale calculation for use in the limiting
470      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
471    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
472    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
473      as well as grad(vort3).  Made it compatible with both approximate form
474      for the cubed sphere and full form of these gradients.  Added flag
475      useFullLeith to select between approximate and full form.  
476    o add "d0" in getcon.F to reduce differences between compilers/platforms
477      update output.txt of exp. fizhi-gridalt-hs
478    o change port_rand funtion to allow to set the seed.
479    o fix obscure MNC bug involving conversion between reals and integers
480      - it caused no problems with certain (eg. gcc, ifc) compilers but the
481        new version is now more standards-compliant
482    o adjoint-related modifications
483      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
484      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
485      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
486    
487    checkpoint57e_post
488    o Adding eddy stress controls a la Ferreira et al.
489    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
490    
491    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
492      update output.txt of exp. fizhi-gridalt-hs
493    o add more "Z" dimensions and associated coordinate vars to MNC
494    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
495    o parameter calendarDumps: when set, approximate months (30-31 days) and years
496      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
497      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
498      months and years.  Requires pkg/cal.
499    o diagnostics: add pickup functionality
500      - off by default for backwards compatibility
501      - current version only uses MDSIO -- MNC will be added
502    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
503    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
504    
505    checkpoint57d_post
506    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
507    o modify verification/ideal_2D_oce so that it tests the creation of mnc
508      output from the diagnostics package
509    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
510    o make genmake2 more portable by using ".$FS" instead of ".f" for more
511      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
512    o add coordinate variables to the MNC output from the diagnostics package
513    o change MNC-flags default value: true when useMNC=TRUE
514    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
515      the ability (off by default) to read the grid information using MNC
516    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
517    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
518    o do snap-shot diagnostics at the middle of the time-interval (instead of
519      at the end).
520    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
521      new test for AIM with thSIce + slab-ocean
522    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
523    o move state variable diagnostics to the beginning of the time step ;
524      (note: still needs some work specially for snap-shot diagnostics)
525      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
526    
527    checkpoint57c_post
528    o Change testing option (-ieee) to get closer agreement between g77 & ifort
529    o generate new output.txt files on faulks with g77 & the new -ieee option
530    checkpoint57c_pre
531    
532    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
533      update output.txt of exp. global_ocean.90x40x15
534    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
535      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
536    o add saltFlux(+File) forcing capability with periodicExternalForcing
537    o allow to use pkg diagnostics for GM-Redi & ThSIce output
538    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
539    o improvements for the MNC output from DIAGNOSTICS:
540      - correct handling of the unlimitied dimension
541      - all dims now have associated coordinate variables
542      - variables located at U, V, and Corner ("Z") points are now written
543        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
544        *all* data points are output
545    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
546    o added pkg/seaice/seaice_monitor.F
547    o mdsio_readfield.F can now read files visible only to master MPI process.
548    o pkg/seaice: some test code for ice-modified ocean stress
549    o exf_getffields interpolation defaults to bilinear for all scalar forcing
550      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
551      spurious negative numbers for precipitation and humidity.  Will cause
552      some small numerical differences for integrations using pkg/exf/exf_interp.F.
553    o pkg/ctrl/
554      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
555        May be enabled via doPackDiag
556      *  introduce z-scaling of
557         + gradient (doZscalePack) and
558         + control (doZscaleUnpack)
559    o pkg/mdsio/
560      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
561      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
562    
563    checkpoint57b_post
564    o simplify options in diagnostics_fill arguments (remove weird combinations)
565    o fix MNC coordinate variables so that they now contain per-face index
566      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
567      general, EXCH2 grids are only aligned to a "local" coordinate system
568    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
569    o Implement instantaneous output within pkg diagnostics:
570      setting a negative frequency in data.diagnostics produces
571     "snap-shot" output (as opposed to time-average if freq > 0)
572    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
573      NOTE: change ptracer diagnostics name: use 2 characters to work with
574            more than 9 tracers. Add also diagnostics of advect & diffus flux.
575    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
576      becomes the coordinate variable for the 'T' dimension
577    o add CF-style coordinate variables to MNC
578      - just a first cut:  numbers are meaningless on the cubesphere and
579        missing along the T axis but otherwise it works!
580    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
581    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
582    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
583      this is based directly on what the model compute, so that the content of
584      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
585    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
586    o clean up build options files for SunOS, in particular
587      - remove -traditional from xmakedepend
588      - change -xarch=v9 to -xarch=native for f77
589      - restore use of make (not gmake)
590      - add CC=gcc if using g77
591    o changes per discussion of AM, JMC, & EH3 today:
592      - move redundant "grid" variables out of "state" -- in preparation of
593        creating proper CF-style coordinate variables and in recognition
594        that any/all grid variables can be easily copied (eg. w/NCO) from
595        the grid files into any of the other NetCDF files
596      - *always* output grid variables with MDSIO (this will eventually be
597        changed)
598      - output MNC grid file if useMNC is true
599    o every instance of _END_MASTER() has been found and replaced with
600      _END_MASTER( myThid ) in order to satisfy certain picky Sun
601      preprocessors
602    o re-arrange diagnostics pkg initialisation:
603     - allow each package to extend the available diagnostics list
604     - add some checking and fix small problems (multi-threaded, ...)
605     - new S/R diagnostics_fill (replace fill_diagnostics):
606       look through the short list of active diag. (instead of the long list)
607       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
608    
609    checkpoint57a_post
610    o this set of changes restores TAMC compatibility
611      tested for global_ocean.90x40x15 adjoint on trough
612      (what a pain)
613    
614    checkpoint57a_pre
615    o some modifs in tools/build_options for sunos
616    o call ctrl_pack for ctrl at end for optimcycle=0
617    
618    checkpoint57
619    o add horizontal bi-harmonic viscosity for vertical velocity
620      - new parameter viscA4W (defaults to viscA4)
621      - affects only non-hydrostatic code
622      - to be done: no-slip lateral boundary conditions
623    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
624    o implement Implicit Vertical advection for pTracers
625    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
626      (implemented also for implicit vertical diffusion & advection)
627    o OBCS: extend application of tracer open boundary conditions
628      to a strip beyond the boundary of width Olx/Oly
629    o add call monitor to TAF set of required calls (flow directives)
630      and include in natl_box_adjoint
631    o untangle a few ifdefs related to cost, ctrl, autodiff
632      untangel a few ALLOW_ECCO_OPTIMIZATION
633    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
634      (theta2, salt2 in ecco_cost_weights)
635    
636    checkpoint56c_post
637    o OBCS as control variables
638      - update ctrl_ad_diff.list, obcs_ad_diff.list
639      - remove balance of obcs controls from default
640      - fix index bug nobcs in ctrl_init
641      - fix dummy fields filen in ctrl_pack
642      - add dummy weights for obcs
643    o lsopt: comment out fort.94 output
644    o optim:
645      - remove unnecessary header files
646      - adjusted namelists
647      - add xerbla.F to Makefile
648    o exf:
649      - multiple modifications of exf_check_range
650      - unit change in exf_init_runoff from [m/year] to [m/s]
651    o mdsio:
652      - i/o-vector change debugLevel from debLevA to debLevB
653    
654    checkpoint56b_post
655    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
656      is called from DO_THE_MODEL_IO
657      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
658      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
659      - clean up PTRACERS_WRITE_TIMEAVE a little
660    o add another verification experiment that tests both the cfc-pkg and
661      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
662      reactive tendencies treated inline with regular timestepping
663    o testreport previously did a lousy job of comparing small numbers, so
664      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
665      implemented in the little c-progam tmp_cmpnum.c which is embedded in
666      testreport.
667    o ptracers_monitor: bug fix for MPI
668    
669    checkpoint56a_post
670    o GCHEM: finish reorganizating the package
671      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
672        (introduces another 3D-array for each passive tracer, but only if
673        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
674        gchemTendency is not needed because the timestep is done separately)
675      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
676      - GCHEM is now---more or less cleanly---separate from PTRACERS
677      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
678        so clear to me how that should be done in a general way.
679    o CFC: improve formatting of output in CFC_ATMOS
680    o PTRACERS:
681      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
682        that ALL experiments with ptracers enable can be checked. This makes
683        GCHEM_MONITOR obsolete.
684      - include a runtime parameter PTRACERS_monitorFreq that defaults to
685        monitorFreq
686      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
687    o add PTRACERS (PTR0[1-5]) to testreport output
688    o exf_check_range:
689      * default changed to .TRUE.
690      * will check values for niter0 if debLevA, every timestep if debLevB
691      * STOP in exf_check_range if 'out of range'
692      * range chosen generous to allow for potential extema
693      TBD: a version with stricter range
694           permitted range would be runtime parameters
695    o GMredi:
696      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
697      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
698      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
699    o GCHEM:
700      - move call to GCHEM_FORCING_SEP, so that it is now called before
701        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
702      - introduced a useGCHEM runtime flag and applied it everywhere.
703      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
704        this flag is now only visible within GCHEM-pkg routines.
705      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
706        be replaced by a 3D array that is computed before thermodynamics; for
707        this, the tracer ID iTracer had to be included into the parameter list
708        of ptracers_forcing
709      - set up forward_step to call gchem_forcing, that will replace
710        gchem_forcing_int in ptracers_forcing
711      - cleaning up
712    o small cleaning of exch2: remove files that are also in eesupp/src
713    
714    checkpoint56
715    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
716    o mnc: cleanup "full" files--fixes out-of-memory problem
717    o ECCO-GODAE
718      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
719      * fully merged and updated from SIO code
720        windstress sign change affects
721        - exf_inscal_[u/v]stress
722        - sign of xx_tau[u/v] adjustments
723        - signs in cost_scat
724      * ctrl_get_gen: avoid update of tau[u/v] for first few days
725      * natl_box_adjoint updated and compressed
726      * 2-level checkpoint switch added
727        (tested in EXP. 1 of natl_box_adjoint)
728      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
729    o SVD
730      * first complete, non-hacked version for SVD calculations
731      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
732        performed via direct access files admtlm_vector.it????
733        (via ctrl_[un]pack)
734      * optimcycle is used for ARPACK iteration counter
735        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
736      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
737        and add linear transforms where necessary
738      * controls are initial/final SST, SSS (can be extended; need to check
739        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
740    o mdsio: filename info to both stderr, stdout
741    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
742      from sign change
743    
744    checkpoint55j_post
745    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
746      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
747    o add consistent build directories and .cvsignore files to verification
748    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
749    o make all subroutines 30 or less characters in length for certain older
750      compilers to work (a thorough search only turns up two routines in
751      pkg/ptracers)
752    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
753      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
754    
755    checkpoint55i_post
756    o change arrays for total vertical diffusivity (2.D if explicit,
757      3.D if implicit) ; each ptracer uses its own background value.
758    o added mnc/NetCDF output capability to ocn_compon_interf
759      - added bits to verification/cpl_aim+ocn so that it can run on
760        ITRDA and other clusters without the mpirun "-wd" option
761    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
762      configuration
763    o give MNC the ability to create additional files rather than
764      exceeding a specified file size limit "MNC_MAX_FILESIZE"
765      - the default is just less than 2GB which is a practical limit
766        on many systems
767    o Compute the non-local term using either KPP vertical diffusivity (=default)
768       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
769    
770    checkpoint55h_post
771    o add verification test "vermix"
772    o remove all the *_ioinc flags and replace with the single global
773      outputTypesInclusive flag
774    o allow to set a vertical profile of vertical diffusivity for T & S
775    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
776    o useMNC moved from data.mnc to data.pkg
777    
778    checkpoint55g_post
779    o Renaming carbon AD experiments to comply with testreport conventions
780    o Updating adjoint of Held-Suarez hs94.1x64x5
781    o Fixing directives for non-ECCO forward_step, after ECCO directives
782      have been fixed to avoid recomp. of do_oceanic_phys
783      Works well for global_ocean.90x40x15,
784      but recomp. issue remains for carbon
785    o Updating adjoint output for natl_box_adjoint after
786      pkg/ecco has been modified (see taga c55d_post)
787    
788    checkpoint55f_post
789    o rename to timeave_init_fixed
790    
791    checkpoint55e_post
792    o some delicate re-shuffle of store directives to avoid one
793      extra call of do_oceanic_physics
794      affects ecco_the_main_loop.F, do_oceanic_physics.F
795      checkpoint_lev1_directives.h
796    o NB: this may break global_ocean adjoint temporarily,
797      but it is clear how to fix it. Will do later, need this now.
798    
799    checkpoint55d_post
800    o ECCO specific cost function terms (up-to-date with 1x1 runs)
801    o ecco_cost_weights is modified to 1x1 runs
802    o modifs to allow observations to be read in as
803      single file or yearly files
804    o enable to read exf forcing fields as either
805      single file or yearly files (flag useExfYearlyFields)
806    checkpoint55d_pre
807    
808    o switch between 2-level and 3-level checkpointing
809    o add ability of MNC to write local and "partial" (eg. 2D slices where
810      the full 3D field is never actually stored) arrays to NetCDF files
811      with the correct (that is, the complete multi-dimensional) set of
812      array indicies
813      - used in mom_vecinv() to write the diagFreq output
814      - tested (demonstrated) in verification/aim.5l_cs
815    o further mnc-ification
816      - add verification/lab_sea to the list with mnc setups
817      - fix undefined mnc v-names in cd_code
818      - add kpp to mnc output (both snapshot and timeave)
819    o non-hydrostatic code
820      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
821        in calc_gw.F
822      - defaults to viscAh
823      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
824        friction or Leith) in non-hydrostatic mode, as long as there is
825        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
826    o pkg/cost
827      extend simple cost functions to treat time mean quantities
828      (T,U,V) via cost_accumulate_state from cost_tile
829    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
830        be 2 times larger than the minimum size the advection scheme requires.
831        now get a perfect conservation of salt in advect_cs test-exp (updated)
832    o GGL90 (Gaspar's TKE mixed layer)
833      - add horizontal diffusion of TKE, requires exchanges in
834        do_fields_blocking_exchanges, horizontal diffusivity is zero by
835        default. In OPA there is no horizontal diffusion of TKE but the
836        mixing coefficients are computed from a horizontal average of TKE of
837        6 points or so. I think that diffusion has a little more physical
838        justification.
839      - clean up ggl90_calc in the hope of reducing memory usage (this hope
840        was in vain)
841      - mask tke-variable in ggl90_init
842    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
843    o fix biharmonic diffusion on CS-grid.
844    o more obcs stuff
845      - added obcs_external_fields_load as an alternative to the EXF-pkg option
846        for reading boundary values. This routine is called from
847        obcs_prescribe_read
848      - updated obcs_check
849      - changed sponge layer relaxation parameter units for days to seconds
850      - turned off sponge layer by default
851      - changed argument list of OBCS_CALC to myTime+deltaTclock
852      - fixed about 35 bugs in obcs_external_fields_load
853    
854    checkpoint55c_post
855    o obcs stuff
856      - new runtime flags useOBCSprescribe, useOBCSbalance
857      - re-arranged obcs_calc
858      - moved exf_getobcs to obcs_prescibe_read
859        obcs_prescibe_read is called after ORLANSKI stuff
860        and independent of it (executable can contain all).
861      - updated obcs_check
862      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
863        These may be necessary only if tangential velocities are
864        prescribed at OB, not sure, needs testing.
865    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
866      which simplifies the calls and passes the ifc check-bounds test
867    
868    checkpoint55b_post
869    o add a 2D scalar, Z location, exchange_2 routine.
870    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
871      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
872      affects advect_cs results (for the wrong reason): update output.txt
873    o use a more standard discretization for biharmonic viscosity ;
874     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
875      affects results of dome set-up: update output.txt
876    o fix gad_advection.F (CubedSphere part), back to version 1.23
877    o fix bug in mom_vi_del2uv.F (CubedSphere part).
878    
879    checkpoint55a_post
880    o merged code to
881      * prescribe/read time-dependent open boundaries
882        (works in conjunction with exf, cal)
883      * sponge layer code for open boundaries
884      * each boundary N/S/E/W now has its own CPP option
885        (healthy for the adjoint)
886    
887    checkpoint55
888    o up-to-date adjoint of previous breaks
889      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
890      - global_ocean_ebm: adjoint still needs fix (TLM ok)
891      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
892      - carbon: * remove tr1-related adjoint verification
893                * add ptracer as control variable
894    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
895      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
896    
897    checkpoint54f_post
898    o in verification/carbin/ remove experiment related to
899      ALLOW_PASSIVE_TRACER (array tr1 etc)
900      code_ad/ input_ad/ results_ad
901    
902    o add two new packages
903      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
904        + subject to optimization (memory)
905      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
906        + subject to reordering (many GOTOs in the original code)
907        + so far opps is called for every (i,j) point, and then operates in
908          the vertical; one may want to reorder the scheme in order operate in
909          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
910          fields)
911    o overhaul of IO so that we now have flags for MDSIO and/or MNC
912      - all verification tests compile and run with linux_ia32_g77
913      - defaults are compatible with current input files--nothing
914        should change if you were not previously using MNC
915      - MNC output has been added in numerous places (eg. timeave)
916        but there are still a few writes not yet do-able with MNC
917        (this is in progress)
918      - flags now allow for either/or/both use of MDSIO and MNC and
919        documentation will soon follow
920      - numerous small formatting cleanups for ProTeX
921    o add version info (via BUILD_INFO.h) to MNC and stdout
922    
923    checkpoint54e_post
924    o add two new packages
925      - pp81 (Packanowski and Philander, 1981), Richardson number and
926        stratification dependent mixing
927      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
928      - these scheme operate in a similar manner as KPP (without ghat, of
929        course), however there is only one diffusivity that is used for both
930        temperature and salinity (and passive tracers)ç
931    o add offline package
932    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
933      provided by Stephanie Dutkiewicz
934    o genmake2: add ability to search for C compilers and cleanup test output
935      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
936    
937    checkpoint54d_post
938    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
939    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
940      leading to additional shift by 5 days each year of integration
941       (i.e. leading to considerable offset over the years)
942    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
943    o start with no AB and no initial filtering (staggerTimeStep):
944      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
945    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
946      (external loading & cpl import/export stay in forward_step.F)
947    o update coupling interface to work with new staggerTimeStep
948    o change MDSIO ptracers_pickup.
949    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
950    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
951    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
952    
953    checkpoint54c_post
954    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
955      this affects (truncation error) output.txt of test-exp:
956       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
957    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
958    o change Qnet to always be the net heat flux, (+upward).
959      affects (truncation error) output of natl_box exp.: updated
960    o define the max number of passive tracers in PTRACERS_SIZE.h
961    o start to test mnc routinely in exp0
962    o add sea-ice loading (sIceLoad) as a new forcing field.
963    
964    checkpoint54b_post
965    o add testreport "-j JOBS" option for parallel builds (tested and pretty
966       impressive on Altix and Opteron systems)
967    o diagnostics can now write NetCDF files through the mnc package
968    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
969    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
970    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
971      affects (truncation error) output of lab_sea & natl_box exp.: updated
972    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
973    
974    checkpoint54a_post
975    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
976    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
977    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
978    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
979      + internal_wave (shift in writing cg2d_ini_res)
980    checkpoint54a_pre
981    
982    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
983      - modified verification/lab_sea and natl_box_adjoint accordingly
984    
985    checkpoint54
986    checkpoint53g_post
987    o prepare splitting of thermodynamics: store convect.counter in common block
988    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
989      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
990    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
991    o new parameter "nShapS": allow to treat differently S from T (nShapT)
992    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
993    o restore adjointability
994    
995    checkpoint53f_post
996    o modifications that affect AIM experiment results (update output.txt):
997      - no advection of S at top interface Nr (pkg/generic_advdiff)
998      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
999    o AIM pkg:
1000      - include stability function into surf.Flux derivative relative to Tsurf
1001      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1002    
1003    checkpoint53e_post
1004    o merged cylindrical coord configuration
1005    o added rotating_tank experiment
1006    checkpoint53e_pre
1007    
1008    checkpoint53d_post
1009    o faulks upgraded: re-generate output.txt that have changed:
1010       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1011    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1012    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1013    o added Sadourny discretization of Coriolis
1014      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1015      - re-enabled use of omega3 (useAbsVorticity)
1016    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1017      vector-invariant equations
1018      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1019    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1020      hopefully without new bugs
1021      - still to do: biharmonic friction for non-hydrostatic w
1022    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1023    o regenerated output for global_ocean_ebm (using -ieee)
1024    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1025      of mom_common/
1026      - simple re-arrangement of instructions within computing loop
1027    checkpoint53d_pre
1028    
1029    checkpoint53c_post
1030    o new version of coupler for AIM+thSIce and Ocean models
1031     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1032     - land: change Evaporation of snow
1033     - aim with thSIce: fix bug in snow-precip.
1034    o changes to calc_gw.F
1035     - bug fix for w^2 term near the bottom boundary
1036     - (hopefully) improve the lateral slip boundary condtions for use with
1037        partial/looped cells
1038      - because the bug fix changes two verification experiments anyway (exp5
1039        and plume on slope), change the lateral boundary condition from half slip
1040        to the value of no_slip_sides
1041    o ebm package wasnt quite up to the parallel task. Fixed that.
1042    o Adjoint of EBM package + verification
1043      * TLM OK
1044      * ADM not sufficient accuracy yet (needs further testing)
1045    
1046    checkpoint53b_post
1047    o Commiting new energy balance model to repository
1048      * package is pkg/ebm
1049      * verif. is verification/global_ocean_ebm
1050      * references are in ebm_driver.F
1051    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1052    C        Global thermohaline circulation. Part I:
1053    C        Sensitivity to atmospheric moisture transport.
1054    C        J. Climate 12(1), 71-82
1055    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1056    C        Global thermohaline circulation. Part II:
1057    C        Sensitivity with interactive transport.
1058    C        J. Climate 12(1), 83-91
1059    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1060    C        Destabilization of the thermohaline circulation
1061    C        by atmospheric eddy transports.
1062    C        J. Climate 7(12), 1870-1882
1063    o Will need long integration testing.
1064    checkpoint53b_pre
1065    
1066    o created pkg/mom_common in preparation for variable viscosity code
1067    o renamed and split ini_mnc_io
1068    o pkg/land: only liquid water can diffuse or run-off
1069    o AIM using land: soil wetness availability account for snow
1070    o added printMapIncludesZeros to EEPARMS namelist
1071    
1072    checkpoint53a_post
1073    o restore TAMC compatiility for exf_constants.h
1074      (no usage of _d in .h)
1075    o Additional storing in KPP in an attempt to fix
1076      TAMC problem with adjoint of KPP code.
1077      (no success...)
1078      Identical code works fine with TAF.
1079    o Fixed verification/natl_box_adjoint experiments.
1080      Initial conditions for Experiments 4 and 5 are now
1081      set to "SEAICE_initialHEFF=0", which is more reasonable,
1082      and hence gives results closer to that of Experiment 2.
1083      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1084    
1085    checkpoint53
1086    o stable checkpoint with up to date adjoint
1087      TLM tests only run for 1st grdchk at the moment. Its unclear if
1088      this is a code problem or a problem with resetting code for g_
1089      variables that is being autogenerated wrong.
1090      Otherwise:
1091       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1092       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1093         are both still in chaos following their security messes.
1094    
1095    checkpoint52n_post
1096    o various build (mostly genmake2) changes including:
1097      - ability to build/run more easily within Cygwin and MacOS X
1098      - more complicated Makefiles with a stronger dependence on Gnu Make
1099    o pkg/seaice modifications
1100      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1101        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1102        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1103      - changed proxy for geostrophic velocity and updated
1104        verification/lab_sea/results/* accordingly
1105      - removed ADI dynamic solver from pkg/seaice
1106      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1107        they caused a segmentation fault under certain circumstances
1108      - removed unused field WATR
1109    o bug fix in exf-package:
1110      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1111         now reflect that.
1112    o small fixes in the cal-package:
1113      - set reference date to first of January for the 'model'-calendar
1114      - failing of cal_CheckDate in cal_FullDate now actually results in a
1115        warning
1116    o small modifications in exf-package to increase flexibility:
1117      - change climtempfreeze from a constant to a runtime parameter that
1118        is specified in data.exf_clim (default = -1.9)
1119      - introduce runtime parameter windstressmax (default = 2.0) that is
1120        specified in data.exf
1121    o fix in pkg/thsice:
1122      - update Evap (Tsf changes) to be consistent with Latent heat flux
1123      - maintain snow precipitation unchanged (even if Tsf >=0).
1124     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1125    
1126    checkpoint52m_post
1127    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1128      this does not change any of the results, because myIter=0 in swfrac always
1129      lead to jwtype=2 (the default anyway), but the call makes little sense
1130      as a default
1131    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1132    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1133      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1134    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1135    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1136    o extending useSingleCpuIO option to work with new exch2 I/O format
1137      - old-style, missing-tile I/O is still accessible by defining CPP
1138        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1139    o monitor package can write to NetCDF files and/or STDOUT
1140    o fix re-definition bug in MNC_GRID_INIT_ALL()
1141    o doc/api_reference added
1142      - a framework for building an API Reference Manual using all
1143        the "protex" comments embedded in the code
1144      - see pkg/generic_advdiff, pkg/mnc for examples
1145    o MNC:
1146      - make myThid the last argument for all subroutines
1147      - new default for the grid files: NO halos
1148      - add useMNC and other run-time flags
1149      - separate per-file-group handling of the unlimited dimension
1150      - early initialization of MNC w/ flags read at the eeboot stage
1151        and lookup tables set in initialize_fixed
1152      - write all MNC output to a freshly-created directory
1153    o thermodynamics sea-ice (thsice) is now tested with testreport.
1154    o test exp. advect_cs: use the standard cs32 grid ; update output.
1155    o Added functionality to grdchk:
1156      pick global i,j,k position (or nearest wet) where to perform check.
1157    
1158    checkpoint52l_post
1159    o new land formulation:
1160      a) use ground enthalpy as prognostic variable to ensure exact
1161         energy conservation.
1162      b) account for water temperature and for latent heat of freezing
1163         in all processes (rain, run-off, ground storage)
1164      c) compute surface and ground temperature implicitly.
1165    o aim_v23 modification for new land model:
1166      a) Treat separately land / ocean / sea-ice surface fluxes
1167         to allow implicit computation of land & sea-ice surface temp.
1168      b) add snow precipitation.
1169    checkpoint52l_pre
1170    
1171    o fix problem (when 1 tile is empty) in min/max monitor.
1172    o fix bug in timeAve (u,vZetatave in common block)
1173    o no restoring terms under ice for pkg/seaice
1174    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1175    o bug fix for pkg/seaice pickups
1176    o change MNC call locations and add coordinate attributes
1177    o mask vorticity at the corner ; affects global_ocean.cs output
1178    o fix ini_curvilinear_grid ; test CS experiments with mpi
1179    o aim.5l_cs: modify sea-ice fraction input file ; update output
1180    o exf: Adding simple range check routine for exf fields after read
1181    
1182    checkpoint52k_post
1183    o removed top-level directory "diags"
1184      - we migrated these functions to pkg/timeave a long time ago
1185    o fixed bug introduced in pkg/monitor
1186    o accuracy ctrlprec = 32 insuffient for gradient checks using
1187      averaged fields (I/O via cost_averages)
1188      -> use ctrl.h in active_file*.F to control I/O precision.
1189    o paramter list of CALL ADTHE_MAIN_LOOP
1190    o added initial do_the_model_io to ecco
1191    o set all ...Freq to zero after cost_final
1192      taveFreq, dumpFreq, pChkptFreq
1193    o MAIN and ECCO differentiability restored
1194    
1195    checkpoint52j_post
1196    o fix nchklev in tamc.h for global_ocean...
1197    o Bringing flow and store directives up-to-date
1198    o Really weird thing!
1199      call do_the_model_io from the_main_loop with parameters
1200      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1201      TAF places a faulty re-call of initialise_varia
1202      after cost_final call which should not be there!
1203    checkpoint52j_pre
1204    
1205    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1206      error messages
1207    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1208    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1209      debug output
1210    o modfied mdsio_writefield.F to handle non-global files under exch2
1211    o update AIM Cubed-Sphere exp (aim.5l_cs):
1212      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1213    o update AIM Equatorial Channel exp:
1214      use standard aim_v23 pkg and change the SST fields to be more realistic.
1215    o globalFile now works with exch2
1216    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1217      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1218    o limit timeave output for hi-res integrations
1219    
1220    checkpoint52i_post
1221    o removed CPP_EEOPTIONS.h from verification/*/code
1222    o updated the tiling for global_ocean_pressure
1223    checkpoint52i_pre
1224    
1225    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1226      the old pkg/aim).
1227    
1228    checkpoint52h_pre
1229    o shortened offending lines in exch2_send_rx?.template
1230    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1231    o genmake2: add build & execute test for NetCDF code
1232    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1233      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1234    o added useSingleCPUIO flag to monitor.F and mon_out.F
1235    o added temporary hack for sea-ice dynamics on the cube:
1236      metric terms are ignored and it is assumed that
1237      there is no sea-ice on cube faces 1, 2, 4, and 5.
1238    
1239    checkpoint52f_post
1240    o added exch2 cube routines to pkg/exch2
1241    o modified hs94.cs-32x32x5 to use it
1242    o added new grid files to hs94.cs-32x32x5
1243    checkpoint52f_pre
1244    
1245    checkpoint52e_post
1246    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1247      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1248    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1249      to work with implicit vertical advection and AB ;
1250    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1251    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1252     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1253    checkpoint52e_pre
1254    
1255    o fix bug in impldiff when Nr=1 or Nr=2.
1256    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1257    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1258    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1259      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1260    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1261    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1262    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1263    
1264    checkpoint52d_post
1265    o re-tiled many expts to allow comparison in multi-processor mode
1266      - updated output accordingly
1267      - changed hs94.128x64x5 to use intial T from file rather than use the
1268        random number generator
1269    o add infrastructure in model routines for fizhi and gridalt packages
1270    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1271    o changes to permit hi-res, cubed-sphere, configuration
1272      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1273      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1274      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1275        of surface winds for the cube
1276      (A verification experiment, based on global_ocean.cs32x15, but with
1277       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1278       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1279       complete with example surface forcing files and matlab scripts to look
1280       at the output and compare it with that of global_ocean.cs32x15.)
1281    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1282       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1283       to conform to the common rule.
1284    o check-in the first version of the coupler + interfaces for multi-components
1285       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1286       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1287       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1288       - ocean and atmos. share the same horizontal grid (no interpolation).
1289       - exchanges between component and coupler is done in forward_step
1290    o new verification experiment, cpl_aim+ocn:
1291       coupled ocean - AIM atmosphere on cs32 grid.
1292    
1293    checkpoint52d_pre
1294    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1295    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1296    
1297    checkpoint52c_post
1298    o Fixing OPTIONS files for use of exf:
1299      - ALLOW_ECCO not needed
1300      - ECCO_CPPOPTIONS.h should not be included from
1301        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1302        as has been the case in the past
1303      - All cal/exf related options are currently set in
1304        single header file. Should remain so until we
1305        agree on a consistent new policy.
1306    o Removed all CPP options for cal package.
1307      cal has no more CPP options.
1308    o modified STOREs in GAD_ADVECTION
1309    o corrected key comp. for passkey
1310    
1311    checkpoint52b_post
1312    o new version: "thsice" of thermodynamic sea-ice pkg:
1313     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1314     - modify fluxes but do not change theta directly;
1315     - light cleaning of bulk_force pkg (still needed with thsice).
1316     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1317       + output_thsice.txt to test thsice & bulk_force pkgs.
1318    o put back grid & coriolis monitor output.
1319    checkpoint52b_pre
1320    
1321    o call "do_the_model_io" at the beginning (=> dump initial state)
1322    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1323    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1324      (need info on NUMBER_OF_PTRACERS)
1325    o missing PTRACERS headers in some routines
1326    o default tamc.h in pkg/autodiff supposed to crash
1327      to ensure proper customization
1328    
1329    checkpoint52a_post
1330    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1331      - moved surfaceTendencyTice from pkg/seaice to main code
1332      - subroutine FREEZE_SURFACE now limits only surface temperature
1333        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1334        => new output.txt for global_ocean.cs32x15 & global_with_exf
1335      - keep the old version of FREEZE for backward compatibility;
1336        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1337      - corresponding modifs for TAF directives
1338    o added surface flux output variables to TIMEAVE_STATVARS
1339    o time-averaged output for pkg/ptracers
1340    o fix problem with ECCO-related divided adjoint
1341      snapshot file was missing some ad-variables,
1342      but no warning issued by TAF
1343    
1344    checkpoint52a_pre
1345    o some bug fixes for #undef REAL4_IS_SLOW
1346    
1347    checkpoint52 = ecco_c52_e35
1348    o after testing adjoints of checkpoint51u_post
1349    
1350    checkpoint51u_post
1351    o this is the post-merge tag of the ecco-branch
1352      (needs another clean checkout and re-testing)
1353    o various natl_box_adjoint configs and results
1354      but no input fields
1355    o obcs adjoint not yet merged!
1356    o adding ECCO global 1x1 and 2x2 degree configs
1357    o updated/extended some store directives for seaice
1358    o pkg/ecco now containes ecco-specific part of cost function
1359    o top level routines the_main_loop, forward_step
1360      supersede those in model/src/
1361      previous input data.cost now in data.ecco
1362      (new namelist ecco_cost_nml)
1363    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1364    
1365    checkpoint51t_post
1366    o this is the pre-merge tag of the ecco-branch
1367    
1368    checkpoint51s_post
1369    o cleanup: removed various obsolete #define-s
1370    o pkg/grdchk
1371      - renamed 'ph-grd 3' to 'grad-res'
1372      - merged from ecco-branch
1373        (remaining bug fixes for obcs gradient checks)
1374      - additional high-precision output for testreport
1375        (grep for 'precision_grdchk_result')
1376    
1377    checkpoint51r_post
1378    o cleaned up or removed CPP_OPTIONS.h files
1379    o updated results for some of the tests to reflect the new
1380      optfiles (-ieee: -O0 instead of -O3)
1381    
1382    checkpoint51q_post
1383    o cd_code:
1384      - moved cd_scheme.F -> cd_code_scheme.F
1385      - separate read_checkpoint from cd_code_ini_vars.F
1386      - separated cd_code part from write_checkpoint
1387      - updated AD_SOURCE, generated .flow
1388      - added CD_CODE_VARS.h to the_main_loop
1389      - Moving cd_code specific store dir.s to pkg/cd_code
1390    o ctrl package totally restructured
1391      - pack/unpack now optional and decoupled from
1392        xx_/adxx_ I/O
1393      - ctrl_pack/unpack cleaned
1394        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1395      - confined inclusion of AD_CONFIG.h to where necessary.
1396    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1397    
1398    checkpoint51p_post
1399    o create initial cd_code package
1400      - WARNING: the initialization of fields within packages
1401        is broken because INI_FIELDS (where READ_CHECKPOINT is
1402        called) is called *before* PACKAGES_INIT_VARIABLES.
1403        This seems to be backwards since
1404        1) its important to initially zero the entire field including
1405           the "halo" region
1406        2) zeroing needs to be done *before* reading pickup info
1407           and the pickup call might or might not happen in any
1408           particular run
1409      - this needs an overhaul for R2
1410    o cleanup verification/*/code/GMREDI_OPTIONS.h
1411    o cleanup testreport
1412    
1413    checkpoint51o_post
1414    o bringing AD-related verif's up to date with genmake2
1415      - carbon/
1416      - global_ocean.90x40x15/
1417      - hs.94.1x64x5/
1418      - (front_relax/ )
1419    o (more) consistent directory structure for AD-related verif.'s
1420    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1421    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1422    o bug fix in find_alpha.F for MDJWF:
1423      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1424        change rho -> rho-rhoConst
1425      - replace call find_rho to find_rhonum
1426    o initialisation of rFlx extended to full array (required by TAF)
1427      and shifted to thermodynamics
1428    o removed PTRACERS.h in ptracers routine
1429    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1430    o Correcting initialisations for fVerU, fVerV.
1431    o helping TAF to recognize dependency on kUp for
1432      fVerU, fVerV
1433    o Replacing delZ by delR in pkg/ctrl/
1434    checkpoint51o_pre
1435    
1436    o undid all of cp51 pending some cleanups and discussion
1437    o added the [#include "AD_CONFIG.h"] statement to all files that need
1438       it for adjoint/tl #defines
1439     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1440     o removed tools/genmake since it no longer works
1441    
1442    checkpoint51n_post
1443    o modifications to make FREEZE flux visible to pkg/kpp
1444      - moved surfaceTendencyTice from pkg/seaice to main code
1445      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1446      - subroutine FREEZE now limits only surface temperature
1447        (this means new output.txt for global_ocean.90x40x15,
1448         global_ocean.cs32x15, and global_with_exf)
1449    o added surface flux output variables to TIMEAVE_STATVARS
1450    
1451    checkpoint51n_pre
1452    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1453    o added [#include "AD_CONFIG.h"] to all files that use the following
1454      defines:
1455      - ALLOW_ADJOINT_RUN
1456      - ALLOW_TANGENTLINEAR_RUN
1457      - ALLOW_ECCO_OPTIMIZATION
1458    
1459    checkpoint51m_post
1460    o incorporating changes to get TAMC/TAF working in genmake2
1461      - added new TAMC/TAF targets to the Makefile
1462      - various cleanups related to package handling
1463      - these changes should have no impact on the forward model
1464    
1465    checkpoint51l_post
1466    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1467     - faster algorithm for cal_addtime.F
1468     - higher precision arithmetic, where needed
1469     - pkg/exf *startdate variables changed from calendar date to
1470       model integration time
1471    
1472    checkpoint51l_pre
1473    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1474    o enable to apply restoring on S & T only in a latitude band.
1475    o update output (external_forcing_surf modif. change truncation errors)
1476       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1477    
1478    checkpoint51k_post
1479    o change default to: useNHMTerms=.FALSE.
1480     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1481       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1482     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1483        exp1, ideal_2D_oce
1484     - change data file of oceanic exp (leave the results unchanged for now)
1485       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1486    o set gravitySign automatically according to the vertical coordinate used
1487      (and change sign: back to "logical" value: +1 when R increases downward)
1488    o added an include barrier to the default CPP_OPTIONS.h and
1489      removed the #include "PACKAGES_CONFIG.h" from it
1490    o fix a bug in mom_fluxform (from chk51j_post)
1491    
1492    checkpoint51j_post
1493    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1494    o adjusted some flow directives (dynamics, thermodynamics)
1495    o added cubed-sphere case to test cost function
1496    o heckpoint_lev?_directives.h now include
1497      pkg-specific directives, whenever those are enabled.
1498    o Moving pkg-specific flow directives to corresponding pkg
1499      Moving pkg-specific differentiation list to corresponding pkg
1500      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1501      ---> conventions are
1502           - pkg_ad.flow
1503           - pkg_ad_diff.list
1504           - pkg_ad_check_lev?_dir.h
1505    
1506    checkpoint51i_post
1507    o merge of the branch-genmake2
1508      - knowingly breaks the older genmake
1509      - automatic generation of all ALLOW_${PKG_NAME} defines
1510      - new testreport supersedes older testscript
1511    o large number of package inclusion and header cleanups
1512    checkpoint51i_pre
1513    
1514    o new output for adjoin of global ocean vector invariant
1515    o fix for checkpoint of thermodynamic seaice and bulk_force
1516    o Steph gchem various cleanups
1517    
1518    checkpoint 51h_pre
1519    o fixed some single quotes
1520    o modify gchem pkg to be more versatile
1521    o modifications to clean up dic pkg
1522    o add pkg/cfc
1523    
1524    checkpoint51g_post
1525    o provide links for ARPACK and ADM*TLM
1526    o start removing verification/vero/
1527    o update AD-related stuff
1528      (in particular some IF-statements in model/src/ routines)
1529    o adding to verification/global_ocean.90x40x15/ adjoint of
1530      vector invariant setup
1531    
1532    checkpoint51f_post
1533    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1534    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1535      of tracer Green's fucntions for ocean inversion project.
1536    
1537    checkpoint51f_pre
1538    o Added on-the-fly spatial interpolation capability
1539        "USE_EXF_INTERPOLATION" to pkg/exf.
1540      - This is a temporary Cartesian-grid hack until
1541        the super-duper ESMF coupler becomes available.
1542      - See verification/global_with_exf/README for usage example.
1543      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1544        flags and modified pkg/seaice accordingly.
1545    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1546        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1547        non-local transport term.
1548    
1549    checkpoint51e_post
1550    o pkg/mom_vecinv:
1551      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1552      - add time-ave diagnostic of vorticity advection.
1553    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1554    o atmospheric geopotential: - include water vapor effect;
1555                                - use p^kappa in p* scaling.
1556    o land pkg: read initial state from files.
1557    o AIM : add stratospheric drag in the upper level
1558    
1559    checkpoint51d_post
1560    o change function ILNBLNK (=> last non-blank char.) to return zero
1561      (instead of the string length) when the string. char is empty
1562    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1563    o modif's to restore TAMC compatibility
1564      - avoid "_d" constructs in PARAMETER declarations
1565      - avoid interrupting lines by comment lines
1566    o Use cluster local disks for purely local I/O
1567      vs. globally visible disks needed for ctrl stuff
1568      (merged from ecco-branch)
1569      - new active_file_loc... and mdsio_..._loc routines
1570      - affected packages: autodiff, ctrl, grdchk, mdsio
1571    
1572    checkpoint51c_post
1573    o introducing integer flag debugLevel
1574      - debLevZero: suppress all output
1575      - debLevA: standard
1576      - debLevB: equivalent to current debugMode=.TRUE.
1577    o introducing pathname variable mdsioLocalDir for mdsio
1578      that can be specified at runtime
1579      (relevant for cluster I/O to local disk)
1580    `
1581    >>>checkpoint51b_post
1582    adjoint of ptracers
1583    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1584    o extended state in checkpoint_lev?, etc.
1585    o alternative ctrl/cost with tr1 or ptracer
1586    o new comlev1_bibj_ptracers
1587    o new ptracers.flow
1588    o made ptracers_forcing same as external_forcing_s
1589    o added verification for adjoint with ptracers
1590      - adm. grdchk fail so far
1591      - tlm. grdchk OK
1592      - checked tapelev/comlev recomputations: OK
1593    <<<checkpoint51b_pre
1594    
1595    checkpoint51a_post
1596    o added code for biogeochemistry package
1597      - new pkgs: dic, gchem
1598      - new subroutine in ptracers
1599    o modify code for biogeo packages
1600      - in model/src and pkg/ptracers
1601    
1602    checkpoint51
1603    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1604      - autodiff, ctrl, exf, grdchk, seaice
1605      kept separate packages
1606      - cost, ecco, obcs
1607    o updating verification/internal_wave, verification/lab_sea
1608      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1609    
1610    checkpoint50i_post
1611    o Preparing next differentiable checkpoint and sync
1612      of MAIN vs. ecco-branch
1613      - 1st step: this one is differentiable
1614      - 2nd step: next(! not this) checkpoint will have updated packages
1615                  from ecco-branch)
1616    
1617    checkpoint50h_post
1618    o new package "land": provide surface BC for AIM.
1619    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1620    o AIM: use true log-P extrapolation for near surface temp (= as in
1621        F.Molteni paper) ; update aim.5l_cs output.
1622    o New variable in PARM03 for more flexible pickups
1623    o somewhat cleaned package initialisation sequence for
1624      ctrl/ cost/ ecco/ in packages_... routines
1625    
1626    checkpoint50g_post
1627    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1628      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1629      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1630        made the default because of faster convergence than ADI
1631    
1632    checkpoint50f_post
1633    o exf totally restructured
1634      - replaced all exf_set_ routines by one generic exf_set_gen.F
1635        and made sure it's still differentiable
1636      - split exf_getffields.F into new exf_bulkformulae.F
1637      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1638      - updated adjoint/makefile and relevant verif. accordingly
1639    
1640    checkpoint50f_pre
1641     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1642          + change Evap over land. (update aim.5l_cs output)
1643     o added missing .cvsignores and made uniform across expts
1644     o changed configuration of tidal_basin_2d expt
1645     o added pkg/debug functions for tracing code in fatal crashes
1646     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1647     o new fn in pkg/monitor to stop model if solution grows too big
1648     o removed lots of single quotes from comments
1649    
1650    checkpoint50e_post
1651    o make KPP work with PTRACERS
1652     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1653       nearly a copy of kpp_transport_s
1654     - there is no analogue to SurfaceTendencyS, so I have to use
1655       gPtr(of the surface layer) instead
1656    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1657    checkpoint50e_pre
1658    
1659    checkpoint50d_post
1660    o change kpp output from multiple-record state files to single-record state
1661      files analogous to write_state.F
1662    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1663      analogous to the cg2d-related output.
1664    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1665      so that writing to internal file fn (with length 512) fails.
1666    checkpoint50d_pre
1667    
1668    checkpoint50c_post
1669    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1670    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1671    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1672    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1673    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1674    
1675    checkpoint50c_pre
1676    Merging from release1_p13:
1677    o bug fix for pkg/seaice dynamic solver
1678    o Added SEAICE_initialHEFF to pkg/seaice
1679    
1680    checkpoint50b_post
1681    o store u*,v* in gU,V instead of in guNm1,gvNm1
1682    o in order to put the momForcing out of the Adams-Bashforth:
1683      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1684      to timestep.F
1685    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1686    o re-generate output for highly sensitive test-exp:
1687       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1688    
1689    checkpoint50b_pre
1690    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1691    o corrected CPP option mismatch in exf_Bulk... functions for case
1692      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1693    
1694    checkpoint50a_post
1695    o Bug fix for merging between c50 and KPP.
1696      ikey was passed from thermodynamics to kpp_calc via
1697      common block rather than being recomputed in kpp_calc,
1698      in contradiction with new key itdkey.
1699      New key ikppkey created, and tamc.h headers updated.
1700    
1701    checkpoint50
1702    - 2nd step of merge with ecco-branch:
1703      merge changes in ecco-branch back into main trunk
1704    - bug fix in find_alpha
1705    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1706    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1707    - merged some sliced AD support routines
1708    
1709    checkpoint49
1710    merged from ecco-branch:
1711    o exf:
1712      - Enable initialisation of forcing fields to constant
1713        (runtime) values.
1714      - in exf_getffields.F
1715        Reduce i-/j-loop to interior domain, discarding overlaps.
1716        That also fixes wrong TAF-key computations for key_1, key_2
1717        with bulf formulae.
1718      - exf_init.F modify #ifdef for exf_init_evap
1719      - exf_getffieldrec.F, ctrl_getrec.F
1720        The following INT-usages are not safe:
1721          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1722          fldcount = int(fldsecs/fldperiod) + 1
1723        and were modified.
1724    o autodiff: checkpoint_lev...
1725      - updated storing for bulk formulae (some arrays were missing)
1726      - added state for seaice package
1727      - synchronized with main branch
1728    o DIVA:
1729      Modif.s in
1730      - the_main_loop.F
1731      - the_model_main.F
1732      and added cost_final_restore.F cost_final_store.F
1733      o With these changes, it is possible to fully separate
1734        the first forward run to compute the cost function (mdthe_main_loop)
1735        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1736        into separate model executions.
1737        This enables better tuning of DIVA to given queue sizes.
1738      o Loss of cost function value in consecutive DIVA runs is
1739        fixed by storing to 'costfinal' file.
1740      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1741        beginning/end of adjoint integration is accounted for.
1742      The current changes apply to TAF-1.4.26.
1743      TAF has one remaining bug, requiring one manual change
1744      (see MITgcm manual).
1745    o cal: synchronized between MAIN and ecco-branch
1746    
1747    checkpoint48i_post
1748    o Changes to restore differentiability of code w.r.t. previous tag
1749      (mostly adding new routines to make list and replacing
1750      pressure by totPhiHyd).
1751    o Updated and merged grdchk package
1752      - has both ADM and TLM checks
1753      - works for single- and multi-proc.
1754      - output cleaned
1755      - worked successfully for parallel DIVA
1756    o genmake:
1757      - Adding -platform=SP4
1758      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1759    o Modif. for DIVA:
1760      ctrl_unpack should not be called in intermediate DIVA interval.
1761      (similar thing would apply for active files such as
1762      tbar, sbar, psbar, which should not be reinitialised;
1763      only relevant for ecco-branch)
1764    
1765    checkpoint48h_post
1766    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1767    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1768    o Added SEAICE_initialHEFF to pkg/seaice
1769    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1770    
1771    checkpoint48g_post
1772    --- EOS:
1773    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1774      store total Potential in totPhyHyd for diagnostics & EOS.
1775    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1776    --- Pressure/geopotential gradient:
1777    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1778    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1779      ( changes results of global_ocean_pressure )
1780    o NLFS + z-coord.: add eta*Rho' contribution.
1781    o accurate phiHyd when using interface-W at the middle between 2 centers
1782     ( changes results of ideal_2D_oce )
1783    o includes r* 2nd term in potential gradient.
1784    
1785    checkpoint48f_post
1786    Merging from release1_p12:
1787    o Modifications for using pkg/exf with pkg/seaice
1788      - improved description of the various forcing configurations
1789      - added basic radiation bulk formulae to pkg/exf
1790      - units/sign fix for evap computation in exf_getffields.F
1791      - updated verification/global_with_exf/results/output.txt
1792    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1793      (SBO) core products, including oceanic mass, center-of-mass,
1794      angular, and bottom pressure (see pkg/sbo/README.sbo).
1795    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1796      to avoid negative values in shallow regions.
1797      - updated verification/natl_box/results/output.txt
1798      - updated verification/lab_sea/results/output.txt
1799    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1800    o Added useSingleCpuIO option (see PARAMS.h).
1801    o Updated useSingleCpuIO option in mdsio_writefield.F to
1802      work with multi-field files, e.g., for single-file pickup.
1803    o pkg/seaice:
1804      - bug fix in growth.F: QNET for no shortwave case
1805      - added HeffFile for specifying initial sea-ice thickness
1806      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1807    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1808      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1809    o pkg/seaice:
1810      - adjoint-friendly modifications
1811      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1812    
1813    checkpoint48e_post
1814    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1815    o dynamics: change definition of computational domain & adapt mom_fluxform
1816      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1817    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1818        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1819        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1820        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1821        inverted_barometer solid-body.cs-32x32x1
1822      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1823    
1824    checkpoint48d_post
1825    o in preparation for r*:
1826     a) use pre-computed gradient of hydrostatic potential:
1827        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1828     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1829        => affects results of glob_oce_pressure (different truncation error)  
1830      update output.txt of ideal_2D_oce & global_ocean_pressure
1831    
1832    checkpoint48d_pre
1833    o in preparation for r*:
1834      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1835      pass the 2 comp. of the grad. as arguments to momentum S/R.
1836      but for the moment, only used if it does not change the results.
1837    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1838    
1839    checkpoint48c_post
1840    Modifications in treatment of initial flux forcing controls
1841    to avoid extra storing of flux fields.
1842    
1843    checkpoint48c_pre
1844    o Added tidal_basin_2d experiment (currently 1D!)
1845    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1846    
1847    checkpoint48b_post
1848    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1849     (modification to pressure gradient not yet implemented)
1850    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1851      (for U & V) that are used for vertical advection of momentum.
1852    
1853    checkpoint48a_post
1854    o In preparation for r*, use temp. array to compute vertical transport
1855       in flux-form momentum pkg. => change results of few test-exp.
1856      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1857                        lab_sea, natl_box & plume_on_slope
1858    
1859    checkpoint48
1860    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1861    
1862    checkpoint47j_post
1863    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1864    o moved adexch from forward_step to addummy_in_stepping
1865    o added exch in ctrl_map_...
1866    o aveFreq.=0. at end of cost_final to avoid overwrite in
1867      reverse checkpointing loop
1868    o Yet more changes in gmredi:
1869      * adgmredi_calc_tensor
1870        avoiding all recomputation of gmredi_slope_limit
1871      * adgmredi_x/y/rtransport
1872        added flag for excessive storing to avoid recomp. of
1873        u/v/rtans, dTdx/y/z
1874        -> this is not really necessary and very memory-consuming
1875      * adgmredi_slope_psi:
1876        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1877      * gmredi_slope_limit
1878        re-activated full calculation of taperfct for case 'ac02'
1879    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1880    
1881    checkpoint47i_post
1882    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1883    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1884      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1885    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1886    o gmredi: fix few bugs.
1887    
1888    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1889    This will be a good checkpoint to plug into the ecco-branch.
1890    o few modif.'s to get latest version adjointed
1891      (mainly kick out code in ini_linear_phisurf)
1892    o modif's to run adjoint with exactConserv
1893    o case GM_BOLUS_ADVEC should be cleaned
1894      S/R gmredi_slope_psi should be cleaned
1895    o verification/carbon now has exactConserv=.TRUE.
1896    
1897    checkpoint47g_post
1898    o time-average AIM output: becomes independent from statvars time-average
1899      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1900    o After TAF bug fix:
1901      Tested adjoint of gmredi package.
1902      Tests were done with checkpoint47 rather than with latest
1903      checkpoint47f_post since the latter is broken for the adjoint
1904      verification/carbon/ contains both ADM and TLM gradient checks.
1905    Here they are, before they get changed/lost/stolen.
1906    Mostly modif.'s to fix numerical sensitivities.
1907    Gradient checks OK for
1908    - GM_taper_scheme:
1909      * clipping
1910      * ac02
1911      * linear
1912      * glw91
1913      * dm95
1914      * ldd97
1915    - GMREDI_OPTIONS:
1916      * GM_VISBECK_VARIABLE_K
1917      * GM_NON_UNITY_DIAGONAL
1918      * GM_EXTRA_DIAGONAL
1919      * GM_BOLUS_ADVEC
1920    in conjunction with data.gmredi parameters to be checked in
1921    in a few minutes under verification/carbon/code/
1922    
1923    checkpoint47f_post
1924    Merging from release1_p10:
1925    o modifications for using pkg/exf with pkg/seaice
1926      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1927        and SEAICE_EXTERNAL_FLUXES
1928      - pkg/exf CPP options EXF_READ_EVAP and
1929        EXF_NO_BULK_COMPUTATIONS
1930      - usage examples are Experiments 8 and 9 in
1931        verification/lab_sea/README
1932      - verification/lab_sea default experiment now uses
1933        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1934    
1935    checkpoint47e_post
1936    o created a tag prior to creating a branch
1937    
1938    checkpoint47d_post
1939    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1940      at the bottom boundary had an erroneous half slip boundary condition
1941    o added bottom drag and no slip boundary condition capabilities to
1942      oceanic pressure coordinates code
1943    o added new verification experiment global_ocean_pressure, this experiment is
1944      also described in the tutorial section of the manual
1945    checkpoint47d_pre
1946    
1947    checkpoint47c_post
1948    o Added a verification experiment for a global cubed-sphere ocean run
1949      -  verification/global_ocean.cubed32x32x30
1950      -  uses pkg/therm_seaice and pkg/bulk_forcing
1951    
1952    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1953    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1954      when using P-coordinate; only implemented for atmospheric config.
1955    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1956      NOTES: requires option NONLIN_FRSURF to be "#define".
1957    o update advect_xz/results/output.txt (left from checkpoint44g_post)
1958    
1959    checkpoint47b_post
1960    Merging from release1_p9:
1961    o pkg/seaice
1962      - removed GOTO's and added taf directives
1963      - double precision constants to reduce the g77 (Linux)
1964        to F77 (SGI) differences reported in release1_p8
1965    o tools/genmake
1966      - added SGI options
1967    o verification/testscript
1968      - updated to that of checkpoint47a_post
1969    o verification/global_ocean.90x40x15/input/eedata
1970      - modified for SGI f77 compatibility
1971    o verification/lab_sea
1972      - added description of sea-ice model
1973      - added missing matlab routines
1974      - added test of thermodynamics parallelization
1975    
1976    checkpoint47a_post
1977    o new pkg: aim_v23
1978     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
1979       for now, keep the same surface forcing as before.
1980     - Part-Cell implemented into AIM; check that Heat & Water are conserved
1981     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
1982     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
1983    o add diagnostic of surface correction term in monitor output
1984    
1985    o bulk_force and therm_seaice
1986    - Two packages:  bulk_force (Bulk forcing)
1987      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
1988    - Earlier integration from Stephaine Dutkiewicz
1989      and Patrick Heimbach.
1990    - Two ifdef statements for compile time,
1991       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
1992    
1993    checkpoint47
1994    differentiable version of checkpoint46n_post
1995    o bug fix in quasihydrostaticterms
1996    o * "clean" adjoint code (in terms of extensive recomputations)
1997        can now be obtained for all GMREDI options (i.e. for
1998        - GM_VISBECK_VARIABLE_K
1999        - GM_NON_UNITY_DIAGONAL
2000        - GM_EXTRA_DIAGONAL
2001        - GM_BOLUS_ADVEC )
2002      * However, wrong gradient check problem remains unsolved.
2003      * New CPP options have been introduced for different
2004        tapering schemes
2005    o external_fields_load now part of differentiation list
2006    o pressure needs multiple storing;
2007      would be nice to have store_pressure at beginning or
2008      end of forward_step, e.g. by having phiHyd global (5-dim.)
2009      (NB: pressure is needed for certain cases in find_rho,
2010      which is also invoked through convective_adjustment).
2011    o recomputations in find_rho for cases
2012     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2013    o #define ATMOSPHERIC_LOADING should be differentiable
2014    o ini_forcing shifted to begining of initialise_varia
2015    o Incorporating QNVS line search routines into MITgcm
2016      (this is separate code, and therefore not under pkg)
2017      lsopt/, optim/
2018    o Updated verification/carbon/
2019      - #define GM_VISBECK_VARIABLE_K
2020      - GM_taper_scheme    = 'ldd97'    
2021    
2022    checkpoint46n_post
2023    Merging from release1_p8:
2024    o verification/natl_box:
2025      updating new external_fields_load routine
2026    o New package: pkg/seaice
2027      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2028      The sea-ice code is based on Hibler (1979-1980).
2029      Two sea-ice dynamic solvers, ADI and LSR, are included.
2030      In addition to computing prognostic sea-ice variables and diagnosing
2031      the forcing/external data fields that drive the ocean model,
2032      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2033      The implied surface heat flux is then stored in variable
2034      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2035      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2036      non-local transport term.  Because this call precedes model
2037      thermodynamics, temperature under sea-ice may not be "exactly" at
2038      the freezing point by the time theta is dumped or time-averaged.
2039      N.B.: fairly large differences in accuracy occur across
2040            different platforms/compilers; comparison between
2041            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2042            generated output gives:
2043       T           S           U           V
2044      C D M    c        m  s        m  s        m  s        m  s
2045      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2046      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2047      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2048    
2049      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2050    o GAD:
2051      - generated new common blocks to account for call of
2052        same gad routines with differing traceridentities
2053        (needed to modify tracerIdentity indices in GAD.h)
2054      - generated separate common blocks for case useCubedSphereExchange
2055        (Department of Futurology)
2056      - parameter lists to gmredi_?transport: added tracerIdentity
2057      - added new key indices to tamc.h
2058    o external_fields_load:
2059      - added this routine to TAF list
2060      - needed to make some common blocks global and additional storing
2061        along the same lines as exf package (checkpoint_lev?_directives.h)
2062    o exf:
2063      updated external forcing package
2064      - bug fixes carried over from ecco-branch
2065        (missing OBCS_OPTIONS.h in two routines)
2066      - enable easy to use "no forcing".
2067      - added exf I/O for atmospheric loading
2068      - added exf I/O for runoff data
2069      - transfered scaling between exf <-> MITgcm to exf namelist
2070    o Adding new verification experiment global_with_exf.
2071      This verification experiment is almost identical to the
2072      global_ocean.90x40x15 experiment, except that it uses
2073      the exf (and cal) package instead of the
2074      external_fields_load routine (cf README file).
2075    
2076    checkpoint46m_post
2077    o modified testscript to return -- when there are no lines of "%MON" output
2078    o added new flag "quasiHydrostatic" for QH mode
2079      and new routine quasihydrostaticterms()
2080    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2081      New routine: mom_u_coriolis_nh()
2082    o fixed sign of non-hydrostatic metric terms in u and v equations.
2083      Depend on correct sign of gravitySign.
2084    o added work.pc* to .cvsignore in aim directories using ifc
2085    o introduced flag for controllin non-hydrostatic metric terms
2086    o removed gravitySign from PARM04
2087    o switched to g77/ifc from pgf77 in aim experiments
2088    
2089    checkpoint46l_post
2090    o made convective adjustment work with pressure coordinates:
2091     - changed the direction of k-loop in convective_adjustment.F for the
2092       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2093     - adjusted the reference pressure k-index in convective_adjustment.F
2094     - adjusted the convection condition in convect.F (in analogy to
2095       calc_ivdc.F)
2096     - convective_adjustment no longer computes anything on the halos
2097     - removed the warnings about negative salinity from find_rho.F and
2098       find_alpha.F; instead the new routine look_for_neg_salinity, called
2099       at the beginning of find_rho, find_alpha, and find_beta, does a
2100       check of the entire slice, if CPP-option
2101       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2102    checkpoint46l_pre
2103    
2104    checkpoint46k_post
2105    o fixed the verification/global_ocean.90x40x15 experiment:
2106     - new bathymetry (the world according to A., JMC, and M.)
2107     - new initial fields and forcing fields (*.bin files)
2108     - new POLY3.COEFFS (for the next release one should switch to a full
2109       equation of state: JMD95P or MDJWF)
2110     - fixed several errors and redundancies in the data file
2111     - experiment uses looped cells
2112     - added matlab directory with diagnostic scripts for plotting of output
2113    
2114    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2115     - read AIM physics parameters from a file (data.aimphys)
2116     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2117    
2118    checkpoint46j_post
2119    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2120    o move wVel computation at the end of the time step, in S/R integr_continuity
2121    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2122    o update timeave pkg for wVel diagnostic.
2123    checkpoint46j_pre
2124    
2125    checkpoint46i_post
2126    o Clean up AIM package (and keep the results unchanged):
2127      include CPP_OPTION and use IMPLICT NONE in all routines ;
2128      declare all the variables _RL ; use _d 0 for all numerical constants.
2129      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2130    
2131    checkpoint46h_post
2132    o cleaned up the use of rhoNil and rhoConst.
2133      - rhoNil should only appear in the LINEAR equation of state, everywhere
2134        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2135        and the dynamical equations are all divided by rhoConst
2136    o introduced new parameter rhoConstFresh, a reference density of fresh
2137      water, to remove the fresh water flux's dependence on rhoNil. The default
2138      value is 999.8 kg/m^3
2139    o cleanup up external_forcing.F and external_forcing_surf.F
2140      - can now be used by both OCEANIC and OCEANICP
2141    checkpoint46h_pre
2142    
2143     Added code to convert surface volume flux (fresh water) into
2144     a mass flux when using P coordinates in the ocean (OCEANICP).
2145     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2146    
2147    checkpoint46g_post
2148    o Include a new diagnostic variable phiHydLow for the ocean model
2149      - in z-coordinates, it is the bottom pressure anomaly
2150      - in p-coordinates, it is the sea surface elevation
2151      - in both cases, these variable have global drift, reflecting the mass
2152        drift in z-coordinates and the volume drift in p-coordinates
2153      - included time averaging for phiHydLow, be aware of the drift!
2154    o depth-dependent computation of Bo_surf for pressure coordinates
2155      in the ocean (buoyancyRelation='OCEANICP')
2156      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2157        Theta, Salinity, and Pressure in the parameter list. This routine is
2158        presently contained in find_rho.F. This routine does not give the
2159        correct density for 'POLY3', which would be a z-dependent reference
2160        density.
2161    o cleaned up find_rho
2162      - removed obsolete 'eqn' from the parameter list.
2163    o added two new verification experiments: gop and goz
2164      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2165    checkpoint46g_pre
2166    
2167    checkpoint46f_post
2168    o Enable tangent linear (forward mode) gradient checks:
2169      - extended active file handling to g_... files
2170      - added TANGENT_SIMULATION to theSimulationMode
2171      - extended grdchk package accordingly
2172    o added tangent linear setup in verification/carbon/code_ftl
2173    o added adjoint setup in verification/front_relax/code_ad
2174    
2175    checkpoint46e_post
2176    o Added new equation of state -> MDJWF
2177      - EOS of McDougall et al., 2002, JAOT, submitted
2178      - caveat: the equation of state is only valid for a smaller (more
2179        realistic?) range of values than JMD95P/Z and UNESCO
2180      - added masks to the calculation of pressure in store_pressure
2181      - added more check values for density in check_eos (ini_eos.F), some of
2182        the old check values are out of the range of the MDJWF-eos, so don't
2183        expect perfect matches for those
2184    checkpoint46e_pre
2185    
2186    checkpoint46d_post
2187    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2188      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2189      case of pressure coordinates. eosType='JMD95Z' in
2190      combination with buoyancyRelation='OCEANICP' now causes an error.
2191    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2192      in find_alpha/beta.
2193    checkpoint46d_pre
2194    
2195    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2196      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2197    
2198    checkpoint46c_post
2199    o Changes necessary for ocean in p-coordinates
2200     -  Added new buoyancy relation = 'OCEANICP'
2201     -  Added new parameters = gravitySign (this used to be contained inside
2202        the factor dRdZ which I added when we first switched to R coordinates).
2203     X GM/Redi is not compatible (yet)
2204     X bottom drag and no-slip need to be debugged.
2205    checkpoint46c_pre
2206    
2207    checkpoint46b_post
2208    o Added new equation of state -> JMD95Z and JMD95P
2209      - EOS of Jackett and McDougall, 1995, JAOT
2210      - moved all EOS parameters into EOS.h
2211      - new routines ini_eos.F, store_pressure.F
2212    o Added UNESCO EOS, but not recommended because it requires
2213      in-situ temperature (see JMD95)
2214    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2215      unesco.f to be used with POLY3
2216    checkpoint46b_pre
2217    
2218    checkpoint46a_post
2219    o Added (atmospheric) pressure loading
2220      - new field in FFIELDS.h, etc...
2221      - new cpp flag ATMOSPHERIC_LOADING
2222    o Changed hFacC to _hFacC in calc_phi_hyd.F
2223    o Added SHORTWAVE_HEATING to some files for consistency
2224    checkpoint46a_pre
2225    
2226    checkpoint46
2227    further merges from release1_p5
2228    o new ctrl package
2229      - adopted from ECCO environment to enable optimization
2230      - added Eliassen Palm fluxes to controls
2231    o added Eliassen Palm flux controls to gradient check package
2232    o cost package
2233      - Compatible with new ctrl package
2234      - added Eliassen Palm cost hooks
2235      - modif's of existing cost functions
2236    o Adjoint-related bug fixes in kpp:
2237      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2238      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2239    o autodiff package
2240      - flow directives:
2241        + new for S/R do_the_model_io
2242        + enhanced for S/R checkpoint
2243        + new gmredi.flow
2244      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2245        disable adcommon.h/g_common.h by default.
2246      - fixed problem for adjoint of global_max
2247    o modified verification/carbon/
2248    o New setup for adjoint of global_ocean
2249    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2250    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2251    o incorporated hooks for sponge layer code (external_forcing.F)
2252    
2253    checkpoint45d_post
2254    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2255    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2256      (affects plume_on_slope "cg2d" output)
2257    o add new parameter deltaTfreesurf for free-surface time stepping
2258    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2259    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2260    o change phiMin in exp1 (to agree with documentation)
2261    o add new flags:
2262     - T,S forcing inside/outside Adams-Bashforth
2263     - turn off temp,salt advection and/or forcing
2264     - for each tracer, define internal flag for multiDimAdvection & A-B
2265    o monitor: change definition of KE to check conservation of Energy
2266    
2267    checkpoint45c_post
2268    o Removed f90 comments ("!")
2269    o Modified initialisations to enable exf package for MITgcm
2270      (without invoking ECCO_PACKAGE).
2271    o modifications to gradient check package (Martin Losch)
2272      - enable centered differences
2273      - modified format of standard output
2274    
2275    checkpoint45b_post
2276    o cleaned exchange calls in cg2d
2277    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2278    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2279      to configure barotropic setup (Martin Losch)
2280    o moved some initialisations within bi,bj loop in dynamics
2281      (TAF flow dependency)
2282    o in initialise_varia, moved call packages_init_variables
2283      before convective_adjustment_init
2284      (corresponding adjustment of TAF tape initialisation).
2285    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2286    
2287    checkpoint45a_post
2288    o compute Rho over the whole domain (extend iMin,jMin indices)
2289    o specific exchange for X-slice domain (case Ny=1)
2290    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2291    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2292    
2293    checkpoint44h_post = checkpoint45
2294    o Fix to restore differentiability:
2295      place at which packages_init_variables is called in
2296      initialise_varia is crucial for reverse control flow.
2297    o modifications in GMRedi to enable stable adjoint
2298      (corresponding modif's in thermodynamics, dynamics)
2299    o added missing hook for sponge layer code in external_forcing
2300    o modified test cost functions
2301    o storing in gad_advection (plus removal of write(0,*)!
2302    o missing headers TR1.h added in convective_adjustment routines
2303    o errorMessageUnit set non-equal zero in eeboot
2304      (conflict on some platforms, e.g. IBM SP3)
2305    o modified carbon verif.
2306    
2307    checkpoint44h_pre
2308    o vertical grid option: allow to put the Interface at the middle between
2309      2 cell-centers ; replace delZ in pkg/kpp by drF.
2310    o GM Advective form: Tracers are advected using the residual transport (=
2311      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2312    
2313    checkpoint44g_post
2314    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2315      results) ; ifdef missing in thermodynamics.F
2316    
2317    checkpoint44f_pre,checkpoint44f_post
2318    o added PTRACERS package
2319      This allows an arbitrary number of passive tracers to be integrated
2320      forward simultaneously with the dynamicaly model.
2321      + Implemented so far:
2322        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2323        - I/O and checkpointing
2324        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2325      + Not implemented so far:
2326        - KPP
2327        - OBCS
2328      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2329        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2330        line in data.pkg.
2331      + This package is disabled by default since it increases storage.
2332    
2333    
2334    o testscript: added -cleanup option
2335    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2336                 b) enable to filter 2D fields.
2337    
2338    checkpoint44e_pre,post
2339    o re-wrote convective adjustment to use pre-calculated weights
2340      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2341      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2342      Original calls to convect() still in place.
2343    
2344    chkpt44d_pre,post
2345    o added missing EXCLUDE_MONITOR flags
2346    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2347      (incompatible typ in MIN/MAX expressions caused problems
2348      on IBM SP3)
2349    o in genmake added variable MAKEDEPEND
2350      plus resetting for case SunOS
2351    o added timer_stats.c routine for IBM SP3
2352    o removed variables in dynamics
2353    !!! I forgot to create tag chkpt44d_pre !!!
2354    !!! But chkpt44d_pre = chkpt44c_post    !!!
2355    
2356    o real fresh water flux implemented with non-linear free-surface.
2357    
2358    chkpt44c_pre,post
2359    o few fix (mask in shap_s2, EmPmR in external_field_load,
2360      USE_NATURAL_BCS in solve_for_P);
2361    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2362    
2363    checkpoint44b_pre/_post
2364    o merge of relevant stuff from the ecco-branch:
2365      - genmake: removed $S64 overwrite for case SunOS
2366      - pkg/exf: update and corrections for field swapping and obcs
2367      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2368                  harmonized between ECCO and MITgcm
2369      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2370                      updated checkpointing_lev... lists for obcs
2371      - model/src: minor changes in forward_step, plot_field
2372                   added directive for divided adjoint in the_main_loop
2373      - pkg/mdsio: added mdsio_gl_slice
2374    
2375    o check parameters & config (chkpt44a_pre,post)
2376    o OBC and NonLin_FrSurf.
2377    
2378    checkpoint44
2379    o fix bug in mom_vi_del2uv
2380    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2381    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2382    o update AIM experiments (NCEP input files)
2383    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2384    o added some stuff for AD
2385    
2386    checkpoint43
2387    o added two new advection tests
2388    o added global 4x4 degree ocean test
2389    o added test of H&S94 with free surface on cube
2390    o some final mods for gradient check, adjoint,...
2391    
2392    checkpoint42
2393      Fixed AD-related problems:
2394    o Store directives up-to-date with re-arranged Adams-Bashforth
2395      (mainly thermodynamics.F)
2396    o New store directives for multi-dim. advection schemes
2397      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2398      * new common block and key passkey
2399      (mainly gad_advection.F)
2400    o Modified store directives for split of dynamics/thermodynamics
2401      for the case ALLOW_KPP
2402    o Cleaned argument list for timestep_tracer.F
2403    
2404    checkpoint41
2405    o re-formatted/added comments in prologues of key subroutines
2406      to work with protex
2407    
2408    checkpoint40
2409    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2410    o added FLT (floats) package from Arne along with demo. experiment
2411    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2412      implementation of forward-in-time forcing terms
2413    o more mods for non-linear free-surface including new variable
2414    o modified multi-dim method to work on cube
2415    o bug fix in KPP (from DM)
2416    
2417    checkpoint40pre9
2418    o added DST advection schemes
2419    o fix MPI bug on SGI's
2420    o modifications for non-linear free-surface
2421    o fixed conditionals for fixed flow/passive tracer only mode
2422    o added tension/strain form of stress tensor
2423    o changes to commenting of arguments for TAF/TAMC
2424    o added/updated many matlab scripts
2425    o added multi-dimensional advection method for tracers
2426      
2427    checkpoint40pre8
2428    o new package rw/
2429      Added method for dumping intermediate local arrays:
2430      mdsio_writetile - same as mdsio_writefield except works from inside
2431                        bi,bj loop
2432      mdsio_writelocal - same as mdsio_writetile except works for local
2433                         arrays
2434      write_local_r? - higher-level wrapper for mdsio_writelocal
2435      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2436      Example given at end of mom_vecinv.F that dumps some local arrays.
2437    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2438      control flux-form versus vector invariant code.
2439      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2440      or genmake -DISABLE ...
2441    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2442      (additional storing is now needed for case vecinv;
2443      currently nothing implemented to switch this storing off
2444      in case fluxform is used since no CPP flag available).
2445    
2446    checkpoint40pre7
2447    o bug fix in dynamics.F
2448      calc_viscosity called before k=1,Nr loop.
2449    o added some #ifdef's ALLOW_PASSIVE_TRACER
2450    o cleaned initialisations in ctrl_map_ini
2451      related to TAF
2452    
2453    checkpoint40pre6
2454    o split dynamics into thermodynamics & dynamics
2455    o corresponding split of calc_diffusivity into
2456      calc_diffusivity, calc_viscosity
2457      (kpp_calc_diff, kpp_calc_visc).
2458    o Added diffkr, kapgm to control variables
2459    o bug fix in gmredi_slope_limit for ldd97
2460    
2461    checkpoint40pre5
2462    o proper initialization of Adams-Bashforth time stepping
2463      + uses forward step for very first step of model (iter=0)
2464    o re-generated *all* output since almost all output is modified by this
2465      change (sorry but we've been putting this one off for about 2 years)
2466      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2467        *not* regenerated since they are already out of date and I don't
2468        want to create the impression that they are suddenly working.
2469    o removed KAP stuff for DEC's
2470    o modified/added many .cvsignore files in */code and */input
2471    o added new expt "solid-body.cs-32x32x1"
2472      + this uses an alternative form of ini_curvilinear_grid.F which
2473        is not necessarily any better than the current one...
2474    
2475    checkpoint40pre4
2476    o added re-initialisations of utrans,vtrans,rtrans in
2477      calc_common_factors which are crucial for TAF.
2478    o extended iMin,jMin range for calc_common_factors,
2479      calc_diffusivity
2480    o added option ALLOW_PASSIVE_TRACER
2481    o a few minor updates and fixes
2482    
2483    checkpoint40pre3
2484    o created calc_gtr1.F for gad package
2485    o split the_main_loop and re-introduced forward_step
2486    o some recomputations of nIter0 for TAMC
2487    
2488    checkpoint40pre2
2489    o Updated to latest branch of AJA, JMC
2490    o Added gradient check package
2491    o Added routines for passive tracer handling
2492    o Added carbon sequestration sensitivity experiment
2493    
2494    checkpoint39
2495     o Modifications and fixes to support TAMC
2496       (mainly missing or wrong directives)
2497     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2498       in addummy_in_stepping
2499     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2500     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2501     o Included following packages:
2502       cal: calendar
2503       exf: external forcing
2504       ecco: essential routines to control use of cal, exf
2505             (NB: this is not the full ECCO environment)
2506     o disabled some packages by default in genmake
2507    
2508    checkpoint38
2509     o see notes_c37_adj.txt
2510     o corrected wrong layer index in external_forcing_t
2511     o replaced the_main_loop/forward_step by the_main_loop
2512     o removed forceoutput from write_state
2513       (replaced criteria for initial/final state)
2514     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2515    
2516    checkpoint37
2517     o mdsio.F routine split and packaged in pkg/mdsio
2518       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2519        used unless genmake -disable=mdsio)
2520     o allow a more precise surface-geopotential gradient for the atmosphere
2521       taking into account the change in space of Alpha (=1/rho) at the surface.
2522     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2523       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2524     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2525       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2526       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2527     o Time-Average diagnostics defined as a pseudo package "timeave".
2528     o pickup files : old pickup (before c35) did not work with new code (c35
2529       and after) unless activating 2 commented lines in initialise-varia.
2530     o Non-Hydrostatic pickup file Pb fixed.
2531     o bug with Rigid-lid version (since c35) fixed.  
2532    
2533    checkpoint36
2534     o implement Crank-Nickelson barotropic time-stepping
2535     o recover Time-Average diagnostics
2536     o fix Pb in checkpoint (PR#19)
2537     o AIM become a standard package ; clean unused CPP_kees
2538    
2539    checkpoint35
2540     o subtantial rewrite of dynamics.f
2541     o allows staggered time-stepping
2542     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2543     o added bottom drag (linear + quadratic)
2544    
2545    checkpoint34
2546     o Modified exchange routines for correct reverse simulation.
2547     o Added verification output to comply with bug fix in impldiff.F
2548       as of c33 (exp2, natl_box).
2549     o Corrected store directives in dynamics.F
2550     o Corrected array boundaries in impldiff.F
2551     o Corrected array dimensions in gmredi.
2552       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2553     o Added routine GLOBAL_SUM_INT to global_sum.F
2554     o Added mdsio_gl.F for ECCO purposes.
2555    
2556  checkpoint33  checkpoint33
2557   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
2558   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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