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revision 1.10 by cnh, Wed Jul 8 15:40:09 1998 UTC revision 1.630 by mlosch, Wed Mar 15 13:06:14 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      - modify advection so that it works also on the C-grid
9      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
10        problem in multi-tile runs with C-grid
11      - remove velocity clipping from seaice_dynsolver with C-grid
12    
13    checkpoint58b_post
14    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
15      update output.txt of exp. aim.5l_cs.thSI
16    o various mnc cleanups and improvements:
17      + shrink lookup tables by factor of ~4
18      + better error reporting when running out of lookup space
19      + able to handle longer path/file names (up to 500 chars)
20    o adjoint:
21      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
22      - TBD: "hidden" mom_vecinv recomp. in dynamics
23    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
24     (allow to differentiate between forcing components using new integer flags:
25      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
26     and add new flag to put Dissipation tendency out of Adams-Bashforth.
27    o ecco
28      - enable trend removal from SSH anomaly obs.
29    o adjoint
30      - a fix for PmEpR when #undef EXACT_CONSERV
31      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
32      - try to fix "hidden" recomp. in forward_step for NLFS
33        (NLFS seems broken sometimes after I checked it in)
34    o seaice:
35     - add c-grid version of the dynamic solver:
36       + three new routines that are the c-grid substitute lsr, dynsolver
37         and ostres
38       + put a few fields that were local to dynsolver into global common
39         blocks, so that I can move the computation of stresses etc into
40         seaice_lsr (saves coding but may break the adjoint).
41     - replace more hardwired parameters by runtime parameters
42     - add ice masks that mask the rhs of the implicit solvers where there
43       is no ice (commented out in seaice_dynsolver, because i am not sure
44       if this works properly), eventually this should replace the clipping
45       of ice velocities in seaice_dynsolver to +/-40cm/s.
46    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
47      include it only where its needed
48    o move balancing of fluxes before the call of external_forcing_surf
49    o seaice:
50      - correct units of turning angles (now they are really in degrees)
51      - move computation of GWATX/Y out of main routine into dynsolver
52      - initialize GWATX/Y in seaice_init
53    o Apply mask on Fresh-Water flux (needed for SSH forcing).
54      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
55    o seaice: add runtime flags for turning angles (default to zero)
56    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
57      and trend from exf forcing and ctrl control adjustments
58    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
59      (since checkpoint57x_post)
60    o change the default rotation period to 86164.s = the Earth rotation
61    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
62      and based on a reference stratification. Tested within hs94.cs-32x32x5.
63    o seaice advection: add code for choosing between the default (2nd order
64      central differences) and multiDim advection schemes provided by
65      pkg/generic_advdiff
66    o seaice:
67      - removed all references to SEAICE_GRID.h fields from
68        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
69        (cubed-sphere configuration will change a little)
70      - grid computations in seaice_init are obsolete now.
71      - cleaned up code a little so that is easier to read (hopefully).
72      - added new (better?) discretizations of default advection and diffusion
73        (turn on with SEAICEuseFluxForm)
74      - replace 1 in 3d global fields by kSurface in growth.F
75      
76    checkpoint58a_post
77    o seaice:
78      - bug fix in advect.F
79    o shelfice:
80      - separate shelfice load anomaly from pload (breaks with time
81        dependent forcing), => introduce constant field shelficeLoadAnomaly.
82        Its default is 0., but it may be computed more cleverly from (unknown)
83        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
84        done offline. A good approximation of the pressure load anomaly is
85        necessary to avoid large initial adjustment processes underneath
86        deep-reaching shelfice.
87      - small fix in ISOMIP shelfice_thermodynamics
88      - add more sophisticated thermodynamics of Hellmer (1989), this is
89        now the default
90      - give a few constants more intuitive names
91    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
92      if bulk formulae are used in long integration (especially EmPmR). Turn
93      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
94      if balancePrintMean, the imbalance that is substracted is printed to
95      STDOUT.
96    o fix bug (typo) in obcs_apply_eta.F
97    o add a new package shelfice which enables us to model the circulation
98      underneath shelf-ice with draughts of hundreds of meters.
99     - works
100     - to do: + include improved thermodynamics
101              + check whether kSurfC (from model/inc/SURFACE.h) can be used
102                instead of new field kTopC
103              + can we use topoFile, Ro_surf and existing code in ini_depth.F
104                instead of new field R_shelfIce and new code in ini_depth.F
105                and ini_mask_etc.F?
106              + adjust vertical mixing schemes?
107    o seaice pkg:
108     - add a cpp-flag to include a simple formula for a salinity dependent
109       freezing point of sea water at the surface
110     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
111       meridional stresses are now different (and hopefully correct)
112    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
113       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
114       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
115    o pkg/diagnostics: add options and parameters for regional-statistics
116       diagnostics ; define regions by reading a region-mask from a file
117       (might add other options later)
118    o pkg/bulk_force:
119     - add option and parameters to use AIM surface-flux formulae.
120     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
121       others forcing fields (defined in PARM05, parameter file "data") are loaded
122       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
123     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
124     - use the right EXCH call for uwind,vwind (to work on CS-grid).
125     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
126       and parameters (note: calcWindStress replaces .NOT.readwindstress).
127     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
128    
129    checkpoint58
130    o add "--embed-source" option to genmake2 which, when the supporting
131      tools can be compiled (as determined by genmake2) will turn on the
132      embed_files package which then embeds the entire MITgcm source code
133      (*.[fFhc] + Makefile) used for the build within the executable
134      - requested by CNH but off by default
135      - adds a paltry <9MB to the mitgcmuv executable in most cases
136      - only writes the output when useEMBEDSRC in eedata is true
137    o clean up 3-dim. relaxation codes:
138      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
139      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
140      * Thanks to Tom Haine for testing!
141    
142    checkpoint57z_post
143    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
144      affects output (@ truncation level) of exp. plume_on_slope ; updated.
145    o fix the pickup behavior for obcs in combination with ptracers
146    o fix a bug in ptracers_external_fields_load
147    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
148      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
149    o transfered surface NH pressure to eta field (if exactConserv).
150    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
151         and update lab_sea output.txt file.
152    o completing 3-dim. relaxation code: additional term
153         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
154      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
155      * At compile time, in "EXF_OPTIONS.h" set
156          #define  ALLOW_CLIMTEMP_RELAXATION
157          #define  ALLOW_CLIMSALT_RELAXATION
158      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
159          tauThetaClimRelax3Dim = 15552000.0,
160          tauSaltClimRelax3Dim  = 15552000.0,
161      * 3 cases:
162          1) Use a constant-in-time 3-dim. field
163          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
164          3) Real-time relax. to time-evolving prescribed field
165    o Adding Laplacian-type smoothness constraint on
166      initial and boundary (forcing) controls (ic, bc)
167      * enable at compile-time via
168        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
169      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
170      * Absolute scale somewhat unclear so far
171      * no area weighting was included since no other cost term does so far
172    
173    checkpoint57y_post
174    First step for a NLFS adjoint
175    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
176    o new init. routines for calc_r_star, calc_surf_dr
177    o still need to deal with ini_masks_etc
178    o testreport seemed happy
179    checkpoint57y_pre
180    
181    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
182    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
183    o add new offset feature to offline pkg (plus minor cleanup)
184    o cfc fixes for final year of integration
185    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
186      be in GCHEM_OPTIONS).
187    
188    checkpoint57x_post
189    o fix testreport Pb in multiple test experiment.
190    o cleanup our namelist syntax in verification:
191      - make it more F95 standards compliant (some work still needed)
192      - allows the vast majority of our tests to work with gfortran
193    o Non-Hydrostatic:
194     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
195     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
196    o Allow to apply AB on T,S rather than on AB(gT,gS):
197     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
198     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
199       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
200     - need a "clever" read_pickup to restart from the other AB formulation
201    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
202    o remove some unused variables (reduces number of compiler warnings)
203    o adjoint
204      * Disable useVariableViscosity for adjoint for time being
205        (there are a number of extensive recomputations)
206      * Initialize certain variables needed for adjoint
207    
208    checkpoint57w_post
209    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
210                 fix the singleCpuIO RS version of MDSWRITEFIELD
211       and add a WARNING if using globalFiles=T with multi-processors.
212    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
213      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
214    o tracer advection scheme:
215      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
216       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
217       was not very convenient).
218      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
219       (further tests needed for the implicit DST & Flux-Limiter schemes).
220    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
221      and sRef for convenience, handy, when you want to initialize
222      ptracers in a large domain with a constant non-zero value. Also,
223      untangle ptracers_init.F a little.
224    
225    checkpoint57v_post
226    o change dome exp. to use variable viscosity in side-drag terms.
227    o remove all the files from the cfc_offline test since they are now
228      incorporated into tutorial_cfc_offline which has been producing
229      identical results for a few days of testing
230    o add new parameter: sideDragFactor to enable half-slip-side BC
231      and change side-drag S/R to use viscosity from mom_calc_visc
232      (can switch back by setting sideDragFactor=0.); affects results at
233      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
234       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
235    o vorticity & strain are now computed without masking, to account for
236      no-slip-side BC in variable viscosity calculation ; mask is applied
237      anyway later on, before computing advection/coriolis terms.
238    o modify exp4 to test new obcs support for reading from external files
239      and for passive tracers
240    o fix behavior of ptracers_monitor when monitor output is written to a
241      netcdf-file; still not independent of monitor.F (writes in the same
242      file).
243    o change default value of tRef (put a uniform, meaningful value for ocean
244      & atmos) and initialize sRef (was missing, as Martin mentioned).
245    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
246      to be proportional to enstrophy dissipation length.  Thus,
247       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
248      This is now consistent with Smagorinsky and with the manual.
249    
250    checkpoint57u_post
251    o OBCS and PTRACERS: add open boundary support for passive tracers
252      - either use homogenous (pseudo) v.Neumann conditions or prescribe
253        OB-values from file; this is not different from the way theta and salinity
254        are treated
255      - however, Orlanski-radiation conditions are not supported, and the model
256        will stop if you use pTracers and Orlanski at the same time.
257      - beefed up the rountine obcs_external_fields_load: now only those open
258        boundary values are overwritten with values from files for which there
259        are really files, otherwise the OB-fields remain untouched. This makes
260        it possible to use different OBs at different ends of the domain (as
261        with EXF)
262    o reduce number of exch calls in shap_filt (s2).
263    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
264      truncation level) 4/5 MLAdjust test results (11&12 digits match).
265    
266    checkpoint57t_post
267    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
268    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
269      same truncation, independent of the face number: affects affects several
270      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
271    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
272      note that biharmonic viscosity + no-slip was not tested in any experiment.
273    o fix bug in non-linear free-surf side-drag ; generate new output for
274      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
275    o make mnc honor the writeBinaryPrec flag for most kinds of output
276    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
277    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
278      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
279    o add brackets in multi-terms sum to get same truncation, independent of
280      the face number (manage to get exactly same value of gU,gV at the cs-edge)
281      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
282    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
283      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
284      a maximum grid-scale Reynolds number.  Also, changes all length calculations
285      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
286      Suggested values of viscosity parameters found in mom_calc_visc.
287      Many new viscosity diagnostics available.
288    
289    checkpoint57s_post
290    o Add clearing-house for viscosity calculations, mom_calc_visc and
291      correct numerous bugs in LeithD and Smagorinsky discretizations.  
292      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
293      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
294      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
295      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
296      The Strain-Tension form is now called with useStrainTensonVisc=.true.
297      ViscAhStrain and viscAhTension are now retired.
298    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
299    o In response to JMC's bug report, genmake2 now ignores any soft-links
300      that it finds in the *current* directory when searching for files.
301      Soft-links found in any other source directories will still work as
302      they did before.
303    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
304      a C routine to unlimit the stack size
305    o mnc-ify pkg/aim snapshot vars
306    o mnc-ify pkg/land as requested by Daniel
307    o various changes to mnc including:
308      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
309      - output can now be grouped so that all files within a group
310          change the ITER portion of their names in lock-step together
311      - can now read ("global") PER-FACE (in addition to PER-TILE) files
312          and works with both EXCH1 and EXCH2 (but needs more testing)
313      - writing works for all verification test cases w/ g77 on Linux
314    
315    checkpoint57r_post
316    o make MNC variable initialization happen earlier
317    o add diagnostics for (almost) each term of the momentum Eq.
318    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
319    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
320    o remove MINIMAL_TAVE_OUTPUT option ;
321      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
322    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
323      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
324    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
325    o add time-dependent SST, SSS control
326    o cost terms in ecco/ modularized (new cost_generic.F)
327    o cost_averages routines are modularized (new cost_averagesgeneric.F)
328    o new infrastructure for seaice model vs. obs misfits in seaice/
329      * driver from the_main_loop.F is seaice_cost_driver.F
330      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
331      * gradient check in Exp. 6a of natl_box_adjoint/
332    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
333      (see README file)
334    
335    checkpoint57q_post
336    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
337    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
338      - bug was reported by Jean-Michel and Ian Fenty
339    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
340      update exp. cpl_aim+ocn output.
341    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
342      Needed for high-res. runs with large global files
343      to be able to limit tapelev size
344    o Changed some tests for adjoint:
345      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
346      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
347      * global_ocean.90x40x15/ back to default 3-level checkpointing
348    o Modifications to enable scripted COMMON to MODULE conversion
349      * verification/OpenAD/code/ has necessary scripts and description;
350      * converts, compiles and runs successfully;
351    
352    checkpoint57p_post
353    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
354    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
355      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
356    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
357    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
358      (was already the case for dissipation with mom_vecinv,
359       and also the case for grad.PhiHyd when staggered-timeStep)
360      This will allow to put dissipation out-off the AB time-stepping.
361     Unfortunately, affects truncation error. Update output of exp. that "fails"
362      (cg2d matching number) and leave the others for later: front_relax(10),
363      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
364      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
365    
366    checkpoint57o_post
367    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
368      (2) its ready to be documented during the 20050801 DocFest
369    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
370      for ideal_2D_oce and lab_sea on linux_ia32_g77
371    o set to #undef CTRL_SET_OLD_MAXCVARS_30
372      in global1x1_tot/code_seaice_adj to access indices 32, 33
373      (worth another tag)
374    
375    checkpoint57n_post
376    o adding precip control xx_precip 32
377    o adding swflux control xx_swflux 33
378    o Replacing 10 forcing penalty cost routines by 1 generic.
379    o Implementing partitioning in time-mean and variable adjustment
380      for atmos. state.
381    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
382    o in natl_box_adjoint:
383      * updated exp 1 to 10
384        (but does not have time-mean vs. variable split results yet)
385    o updated global1x1/*_seaice_adj/
386      to incorporate latest changes
387    o enable useSingleCpuIO for mdsio vector routines
388      (applies in particular to tapelev I/O)
389    o removed inefficient K-loop in all active_file*control*.F
390    
391    checkpoint57m_post
392    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
393      and advect_cs (use EXCH-2 and standard cs-32 grid files).
394    o pkg/exch2: filling of face-corner halo regions is optional
395      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
396    
397    checkpoint57l_post
398     tag before updating tutorials (pre-release-2)
399    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
400       for output and interpolation of input fields onto model grid)
401    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
402       Affects results of exp. rotating_tank ; update output.txt.
403    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
404          and taking the square quantity and/or using a fraction-weight field.
405    o fix aim_diagnostics_init.F mate numbers.
406    o add mnc output capability to diagnostics/diagstat and update
407      our cvsignore files for the ACSII output generated
408    
409    checkpoint57k_post
410    o lab_sea now uses diagnostics package and provides a suite of
411      new EXF diagnostics output.
412    
413    checkpoint57j_post
414    o exf
415      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
416        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
417        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
418      * extended diagnostics output
419        - now includes all EXF variables
420        - hs, hl moved to common block
421        - separate S/R for diagnostics, called after ctrl vector is added
422        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
423        - EXFqnet contains true Qnet (i.e. includes qsw)
424      * updated verif. lab_sea, global_with_exf
425      * Rearranging hflux (exf_mapfields -> exf_getforcing)
426        to ensure that diagnostics sees a true EXFqnet
427    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
428    o diagnostics pkg: change pointers so that 1 diagnostic can be used
429      several times with different frequencies.
430    o mnc-ify the thsice package as requested by Daniel Enderton
431      - the monitor--MNC output needs work
432      - many attributes need to be added (most are currently blank)
433    o mnc-ify theaim_v23 package as requested by Daniel Enderton
434      - many attributes need to be added (most are currently blank)
435    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
436    o add Sadourny like discretization to the 4th.O vorticity advection scheme
437    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
438      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
439         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
440    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
441     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
442    
443    checkpoint57i_post
444    o Diagnostics package was changed: diagnostic allocation is now deactivated
445      by setting an empty file name in the namelist (used to be by setting 0 frequency)
446    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
447      add 1rst Order upwind vertical Shear.
448    o add a quick fix for A/B checkpointing in OFFLINE mode
449    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
450      end-run around the C/Fortran linking horror in eesup/src/timers.F
451    o added pkg/runclock: allows user to terminate run based on wall clock
452    o added non-hydrostatic scaling parameter: nh_am2
453    o pkg/my82: futile attempt to make results compiler-independent by adding
454      some "_d 0", etc. no effect.
455    o for mnc output, fill the 'T' coordinate var with myTime and create a
456      separate 'iter' variable for iteration count
457    o pkg/diagnostics:
458      add new capability: output of Global/Regional & per-level statistics ;
459      tested against monitor output (including land & thSIce) on various exp.
460    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
461    
462    checkpoint57h_done
463      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
464      data.diagnostics, data.gchem, data.ptracers) is done.
465    
466    o pkg/diagnostics: prepare for Global/Regional statistics.
467      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
468    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
469      and rename it: DIFFERENT_MULTIPLE
470    
471    checkpoint57h_post
472    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
473    o pkg/diagnostics: change output frequency, now in seconds (instead
474      of Nb of iterations). This requires to change data.diagnostics.
475    checkpoint57h_pre
476    
477    o in mnc, let the user create the output dir if both mnc_outdir_date
478      and mnc_outdir_num are false
479    o add fflags() to pkg/diagnostics which allows one to specify, on a
480      per-file basis, the file precision [default behavior is unchanged]
481    o added diagnostics to pkg/kpp, including computation of mixed layer
482      depth based on a temperature/density criterion
483    o updated verification/natl_box to test the new pkg/kpp diagnostics
484    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
485    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
486    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
487      not mnc -- this mistake was found by JMC and is now corrected
488    
489    checkpoint57g_post
490    o add Adams-Bashforth 3rd Order time stepping:
491      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
492      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
493    checkpoint57g_pre
494    
495    o make lambda[Theta,Salt]ClimRelax spatially varying
496      (default remains spatially uniform constant based on tau)
497    o added new control variables
498      * init. uVel, vVel, etanN
499      * lambda[Theta,Salt]ClimRelax
500    o separate masks used for ctrl_pack/unpack 'from write_grid' output
501      (suggested by G. Forget)
502    
503    checkpoint57f_post
504    o add parameter "baseTime" = model base time = time at iteration zero
505      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
506      account for baseTime shift
507    o move Coriolis arrays from PARAMS.h to GRID.h
508    checkpoint57f_pre
509    
510    o mnc-ifying the seaice package
511    o introduced an alternative length scale calculation for use in the limiting
512      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
513    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
514    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
515      as well as grad(vort3).  Made it compatible with both approximate form
516      for the cubed sphere and full form of these gradients.  Added flag
517      useFullLeith to select between approximate and full form.  
518    o add "d0" in getcon.F to reduce differences between compilers/platforms
519      update output.txt of exp. fizhi-gridalt-hs
520    o change port_rand funtion to allow to set the seed.
521    o fix obscure MNC bug involving conversion between reals and integers
522      - it caused no problems with certain (eg. gcc, ifc) compilers but the
523        new version is now more standards-compliant
524    o adjoint-related modifications
525      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
526      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
527      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
528    
529    checkpoint57e_post
530    o Adding eddy stress controls a la Ferreira et al.
531    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
532    
533    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
534      update output.txt of exp. fizhi-gridalt-hs
535    o add more "Z" dimensions and associated coordinate vars to MNC
536    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
537    o parameter calendarDumps: when set, approximate months (30-31 days) and years
538      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
539      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
540      months and years.  Requires pkg/cal.
541    o diagnostics: add pickup functionality
542      - off by default for backwards compatibility
543      - current version only uses MDSIO -- MNC will be added
544    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
545    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
546    
547    checkpoint57d_post
548    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
549    o modify verification/ideal_2D_oce so that it tests the creation of mnc
550      output from the diagnostics package
551    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
552    o make genmake2 more portable by using ".$FS" instead of ".f" for more
553      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
554    o add coordinate variables to the MNC output from the diagnostics package
555    o change MNC-flags default value: true when useMNC=TRUE
556    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
557      the ability (off by default) to read the grid information using MNC
558    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
559    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
560    o do snap-shot diagnostics at the middle of the time-interval (instead of
561      at the end).
562    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
563      new test for AIM with thSIce + slab-ocean
564    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
565    o move state variable diagnostics to the beginning of the time step ;
566      (note: still needs some work specially for snap-shot diagnostics)
567      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
568    
569    checkpoint57c_post
570    o Change testing option (-ieee) to get closer agreement between g77 & ifort
571    o generate new output.txt files on faulks with g77 & the new -ieee option
572    checkpoint57c_pre
573    
574    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
575      update output.txt of exp. global_ocean.90x40x15
576    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
577      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
578    o add saltFlux(+File) forcing capability with periodicExternalForcing
579    o allow to use pkg diagnostics for GM-Redi & ThSIce output
580    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
581    o improvements for the MNC output from DIAGNOSTICS:
582      - correct handling of the unlimitied dimension
583      - all dims now have associated coordinate variables
584      - variables located at U, V, and Corner ("Z") points are now written
585        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
586        *all* data points are output
587    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
588    o added pkg/seaice/seaice_monitor.F
589    o mdsio_readfield.F can now read files visible only to master MPI process.
590    o pkg/seaice: some test code for ice-modified ocean stress
591    o exf_getffields interpolation defaults to bilinear for all scalar forcing
592      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
593      spurious negative numbers for precipitation and humidity.  Will cause
594      some small numerical differences for integrations using pkg/exf/exf_interp.F.
595    o pkg/ctrl/
596      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
597        May be enabled via doPackDiag
598      *  introduce z-scaling of
599         + gradient (doZscalePack) and
600         + control (doZscaleUnpack)
601    o pkg/mdsio/
602      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
603      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
604    
605    checkpoint57b_post
606    o simplify options in diagnostics_fill arguments (remove weird combinations)
607    o fix MNC coordinate variables so that they now contain per-face index
608      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
609      general, EXCH2 grids are only aligned to a "local" coordinate system
610    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
611    o Implement instantaneous output within pkg diagnostics:
612      setting a negative frequency in data.diagnostics produces
613     "snap-shot" output (as opposed to time-average if freq > 0)
614    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
615      NOTE: change ptracer diagnostics name: use 2 characters to work with
616            more than 9 tracers. Add also diagnostics of advect & diffus flux.
617    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
618      becomes the coordinate variable for the 'T' dimension
619    o add CF-style coordinate variables to MNC
620      - just a first cut:  numbers are meaningless on the cubesphere and
621        missing along the T axis but otherwise it works!
622    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
623    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
624    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
625      this is based directly on what the model compute, so that the content of
626      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
627    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
628    o clean up build options files for SunOS, in particular
629      - remove -traditional from xmakedepend
630      - change -xarch=v9 to -xarch=native for f77
631      - restore use of make (not gmake)
632      - add CC=gcc if using g77
633    o changes per discussion of AM, JMC, & EH3 today:
634      - move redundant "grid" variables out of "state" -- in preparation of
635        creating proper CF-style coordinate variables and in recognition
636        that any/all grid variables can be easily copied (eg. w/NCO) from
637        the grid files into any of the other NetCDF files
638      - *always* output grid variables with MDSIO (this will eventually be
639        changed)
640      - output MNC grid file if useMNC is true
641    o every instance of _END_MASTER() has been found and replaced with
642      _END_MASTER( myThid ) in order to satisfy certain picky Sun
643      preprocessors
644    o re-arrange diagnostics pkg initialisation:
645     - allow each package to extend the available diagnostics list
646     - add some checking and fix small problems (multi-threaded, ...)
647     - new S/R diagnostics_fill (replace fill_diagnostics):
648       look through the short list of active diag. (instead of the long list)
649       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
650    
651    checkpoint57a_post
652    o this set of changes restores TAMC compatibility
653      tested for global_ocean.90x40x15 adjoint on trough
654      (what a pain)
655    
656    checkpoint57a_pre
657    o some modifs in tools/build_options for sunos
658    o call ctrl_pack for ctrl at end for optimcycle=0
659    
660    checkpoint57
661    o add horizontal bi-harmonic viscosity for vertical velocity
662      - new parameter viscA4W (defaults to viscA4)
663      - affects only non-hydrostatic code
664      - to be done: no-slip lateral boundary conditions
665    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
666    o implement Implicit Vertical advection for pTracers
667    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
668      (implemented also for implicit vertical diffusion & advection)
669    o OBCS: extend application of tracer open boundary conditions
670      to a strip beyond the boundary of width Olx/Oly
671    o add call monitor to TAF set of required calls (flow directives)
672      and include in natl_box_adjoint
673    o untangle a few ifdefs related to cost, ctrl, autodiff
674      untangel a few ALLOW_ECCO_OPTIMIZATION
675    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
676      (theta2, salt2 in ecco_cost_weights)
677    
678    checkpoint56c_post
679    o OBCS as control variables
680      - update ctrl_ad_diff.list, obcs_ad_diff.list
681      - remove balance of obcs controls from default
682      - fix index bug nobcs in ctrl_init
683      - fix dummy fields filen in ctrl_pack
684      - add dummy weights for obcs
685    o lsopt: comment out fort.94 output
686    o optim:
687      - remove unnecessary header files
688      - adjusted namelists
689      - add xerbla.F to Makefile
690    o exf:
691      - multiple modifications of exf_check_range
692      - unit change in exf_init_runoff from [m/year] to [m/s]
693    o mdsio:
694      - i/o-vector change debugLevel from debLevA to debLevB
695    
696    checkpoint56b_post
697    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
698      is called from DO_THE_MODEL_IO
699      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
700      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
701      - clean up PTRACERS_WRITE_TIMEAVE a little
702    o add another verification experiment that tests both the cfc-pkg and
703      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
704      reactive tendencies treated inline with regular timestepping
705    o testreport previously did a lousy job of comparing small numbers, so
706      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
707      implemented in the little c-progam tmp_cmpnum.c which is embedded in
708      testreport.
709    o ptracers_monitor: bug fix for MPI
710    
711    checkpoint56a_post
712    o GCHEM: finish reorganizating the package
713      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
714        (introduces another 3D-array for each passive tracer, but only if
715        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
716        gchemTendency is not needed because the timestep is done separately)
717      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
718      - GCHEM is now---more or less cleanly---separate from PTRACERS
719      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
720        so clear to me how that should be done in a general way.
721    o CFC: improve formatting of output in CFC_ATMOS
722    o PTRACERS:
723      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
724        that ALL experiments with ptracers enable can be checked. This makes
725        GCHEM_MONITOR obsolete.
726      - include a runtime parameter PTRACERS_monitorFreq that defaults to
727        monitorFreq
728      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
729    o add PTRACERS (PTR0[1-5]) to testreport output
730    o exf_check_range:
731      * default changed to .TRUE.
732      * will check values for niter0 if debLevA, every timestep if debLevB
733      * STOP in exf_check_range if 'out of range'
734      * range chosen generous to allow for potential extema
735      TBD: a version with stricter range
736           permitted range would be runtime parameters
737    o GMredi:
738      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
739      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
740      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
741    o GCHEM:
742      - move call to GCHEM_FORCING_SEP, so that it is now called before
743        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
744      - introduced a useGCHEM runtime flag and applied it everywhere.
745      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
746        this flag is now only visible within GCHEM-pkg routines.
747      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
748        be replaced by a 3D array that is computed before thermodynamics; for
749        this, the tracer ID iTracer had to be included into the parameter list
750        of ptracers_forcing
751      - set up forward_step to call gchem_forcing, that will replace
752        gchem_forcing_int in ptracers_forcing
753      - cleaning up
754    o small cleaning of exch2: remove files that are also in eesupp/src
755    
756    checkpoint56
757    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
758    o mnc: cleanup "full" files--fixes out-of-memory problem
759    o ECCO-GODAE
760      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
761      * fully merged and updated from SIO code
762        windstress sign change affects
763        - exf_inscal_[u/v]stress
764        - sign of xx_tau[u/v] adjustments
765        - signs in cost_scat
766      * ctrl_get_gen: avoid update of tau[u/v] for first few days
767      * natl_box_adjoint updated and compressed
768      * 2-level checkpoint switch added
769        (tested in EXP. 1 of natl_box_adjoint)
770      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
771    o SVD
772      * first complete, non-hacked version for SVD calculations
773      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
774        performed via direct access files admtlm_vector.it????
775        (via ctrl_[un]pack)
776      * optimcycle is used for ARPACK iteration counter
777        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
778      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
779        and add linear transforms where necessary
780      * controls are initial/final SST, SSS (can be extended; need to check
781        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
782    o mdsio: filename info to both stderr, stdout
783    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
784      from sign change
785    
786    checkpoint55j_post
787    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
788      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
789    o add consistent build directories and .cvsignore files to verification
790    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
791    o make all subroutines 30 or less characters in length for certain older
792      compilers to work (a thorough search only turns up two routines in
793      pkg/ptracers)
794    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
795      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
796    
797    checkpoint55i_post
798    o change arrays for total vertical diffusivity (2.D if explicit,
799      3.D if implicit) ; each ptracer uses its own background value.
800    o added mnc/NetCDF output capability to ocn_compon_interf
801      - added bits to verification/cpl_aim+ocn so that it can run on
802        ITRDA and other clusters without the mpirun "-wd" option
803    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
804      configuration
805    o give MNC the ability to create additional files rather than
806      exceeding a specified file size limit "MNC_MAX_FILESIZE"
807      - the default is just less than 2GB which is a practical limit
808        on many systems
809    o Compute the non-local term using either KPP vertical diffusivity (=default)
810       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
811    
812    checkpoint55h_post
813    o add verification test "vermix"
814    o remove all the *_ioinc flags and replace with the single global
815      outputTypesInclusive flag
816    o allow to set a vertical profile of vertical diffusivity for T & S
817    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
818    o useMNC moved from data.mnc to data.pkg
819    
820    checkpoint55g_post
821    o Renaming carbon AD experiments to comply with testreport conventions
822    o Updating adjoint of Held-Suarez hs94.1x64x5
823    o Fixing directives for non-ECCO forward_step, after ECCO directives
824      have been fixed to avoid recomp. of do_oceanic_phys
825      Works well for global_ocean.90x40x15,
826      but recomp. issue remains for carbon
827    o Updating adjoint output for natl_box_adjoint after
828      pkg/ecco has been modified (see taga c55d_post)
829    
830    checkpoint55f_post
831    o rename to timeave_init_fixed
832    
833    checkpoint55e_post
834    o some delicate re-shuffle of store directives to avoid one
835      extra call of do_oceanic_physics
836      affects ecco_the_main_loop.F, do_oceanic_physics.F
837      checkpoint_lev1_directives.h
838    o NB: this may break global_ocean adjoint temporarily,
839      but it is clear how to fix it. Will do later, need this now.
840    
841    checkpoint55d_post
842    o ECCO specific cost function terms (up-to-date with 1x1 runs)
843    o ecco_cost_weights is modified to 1x1 runs
844    o modifs to allow observations to be read in as
845      single file or yearly files
846    o enable to read exf forcing fields as either
847      single file or yearly files (flag useExfYearlyFields)
848    checkpoint55d_pre
849    
850    o switch between 2-level and 3-level checkpointing
851    o add ability of MNC to write local and "partial" (eg. 2D slices where
852      the full 3D field is never actually stored) arrays to NetCDF files
853      with the correct (that is, the complete multi-dimensional) set of
854      array indicies
855      - used in mom_vecinv() to write the diagFreq output
856      - tested (demonstrated) in verification/aim.5l_cs
857    o further mnc-ification
858      - add verification/lab_sea to the list with mnc setups
859      - fix undefined mnc v-names in cd_code
860      - add kpp to mnc output (both snapshot and timeave)
861    o non-hydrostatic code
862      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
863        in calc_gw.F
864      - defaults to viscAh
865      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
866        friction or Leith) in non-hydrostatic mode, as long as there is
867        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
868    o pkg/cost
869      extend simple cost functions to treat time mean quantities
870      (T,U,V) via cost_accumulate_state from cost_tile
871    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
872        be 2 times larger than the minimum size the advection scheme requires.
873        now get a perfect conservation of salt in advect_cs test-exp (updated)
874    o GGL90 (Gaspar's TKE mixed layer)
875      - add horizontal diffusion of TKE, requires exchanges in
876        do_fields_blocking_exchanges, horizontal diffusivity is zero by
877        default. In OPA there is no horizontal diffusion of TKE but the
878        mixing coefficients are computed from a horizontal average of TKE of
879        6 points or so. I think that diffusion has a little more physical
880        justification.
881      - clean up ggl90_calc in the hope of reducing memory usage (this hope
882        was in vain)
883      - mask tke-variable in ggl90_init
884    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
885    o fix biharmonic diffusion on CS-grid.
886    o more obcs stuff
887      - added obcs_external_fields_load as an alternative to the EXF-pkg option
888        for reading boundary values. This routine is called from
889        obcs_prescribe_read
890      - updated obcs_check
891      - changed sponge layer relaxation parameter units for days to seconds
892      - turned off sponge layer by default
893      - changed argument list of OBCS_CALC to myTime+deltaTclock
894      - fixed about 35 bugs in obcs_external_fields_load
895    
896    checkpoint55c_post
897    o obcs stuff
898      - new runtime flags useOBCSprescribe, useOBCSbalance
899      - re-arranged obcs_calc
900      - moved exf_getobcs to obcs_prescibe_read
901        obcs_prescibe_read is called after ORLANSKI stuff
902        and independent of it (executable can contain all).
903      - updated obcs_check
904      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
905        These may be necessary only if tangential velocities are
906        prescribed at OB, not sure, needs testing.
907    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
908      which simplifies the calls and passes the ifc check-bounds test
909    
910    checkpoint55b_post
911    o add a 2D scalar, Z location, exchange_2 routine.
912    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
913      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
914      affects advect_cs results (for the wrong reason): update output.txt
915    o use a more standard discretization for biharmonic viscosity ;
916     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
917      affects results of dome set-up: update output.txt
918    o fix gad_advection.F (CubedSphere part), back to version 1.23
919    o fix bug in mom_vi_del2uv.F (CubedSphere part).
920    
921    checkpoint55a_post
922    o merged code to
923      * prescribe/read time-dependent open boundaries
924        (works in conjunction with exf, cal)
925      * sponge layer code for open boundaries
926      * each boundary N/S/E/W now has its own CPP option
927        (healthy for the adjoint)
928    
929    checkpoint55
930    o up-to-date adjoint of previous breaks
931      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
932      - global_ocean_ebm: adjoint still needs fix (TLM ok)
933      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
934      - carbon: * remove tr1-related adjoint verification
935                * add ptracer as control variable
936    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
937      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
938    
939    checkpoint54f_post
940    o in verification/carbin/ remove experiment related to
941      ALLOW_PASSIVE_TRACER (array tr1 etc)
942      code_ad/ input_ad/ results_ad
943    
944    o add two new packages
945      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
946        + subject to optimization (memory)
947      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
948        + subject to reordering (many GOTOs in the original code)
949        + so far opps is called for every (i,j) point, and then operates in
950          the vertical; one may want to reorder the scheme in order operate in
951          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
952          fields)
953    o overhaul of IO so that we now have flags for MDSIO and/or MNC
954      - all verification tests compile and run with linux_ia32_g77
955      - defaults are compatible with current input files--nothing
956        should change if you were not previously using MNC
957      - MNC output has been added in numerous places (eg. timeave)
958        but there are still a few writes not yet do-able with MNC
959        (this is in progress)
960      - flags now allow for either/or/both use of MDSIO and MNC and
961        documentation will soon follow
962      - numerous small formatting cleanups for ProTeX
963    o add version info (via BUILD_INFO.h) to MNC and stdout
964    
965    checkpoint54e_post
966    o add two new packages
967      - pp81 (Packanowski and Philander, 1981), Richardson number and
968        stratification dependent mixing
969      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
970      - these scheme operate in a similar manner as KPP (without ghat, of
971        course), however there is only one diffusivity that is used for both
972        temperature and salinity (and passive tracers)ç
973    o add offline package
974    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
975      provided by Stephanie Dutkiewicz
976    o genmake2: add ability to search for C compilers and cleanup test output
977      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
978    
979    checkpoint54d_post
980    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
981    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
982      leading to additional shift by 5 days each year of integration
983       (i.e. leading to considerable offset over the years)
984    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
985    o start with no AB and no initial filtering (staggerTimeStep):
986      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
987    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
988      (external loading & cpl import/export stay in forward_step.F)
989    o update coupling interface to work with new staggerTimeStep
990    o change MDSIO ptracers_pickup.
991    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
992    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
993    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
994    
995    checkpoint54c_post
996    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
997      this affects (truncation error) output.txt of test-exp:
998       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
999    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1000    o change Qnet to always be the net heat flux, (+upward).
1001      affects (truncation error) output of natl_box exp.: updated
1002    o define the max number of passive tracers in PTRACERS_SIZE.h
1003    o start to test mnc routinely in exp0
1004    o add sea-ice loading (sIceLoad) as a new forcing field.
1005    
1006    checkpoint54b_post
1007    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1008       impressive on Altix and Opteron systems)
1009    o diagnostics can now write NetCDF files through the mnc package
1010    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1011    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1012    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1013      affects (truncation error) output of lab_sea & natl_box exp.: updated
1014    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1015    
1016    checkpoint54a_post
1017    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1018    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1019    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1020    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1021      + internal_wave (shift in writing cg2d_ini_res)
1022    checkpoint54a_pre
1023    
1024    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1025      - modified verification/lab_sea and natl_box_adjoint accordingly
1026    
1027    checkpoint54
1028    checkpoint53g_post
1029    o prepare splitting of thermodynamics: store convect.counter in common block
1030    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1031      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1032    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1033    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1034    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1035    o restore adjointability
1036    
1037    checkpoint53f_post
1038    o modifications that affect AIM experiment results (update output.txt):
1039      - no advection of S at top interface Nr (pkg/generic_advdiff)
1040      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1041    o AIM pkg:
1042      - include stability function into surf.Flux derivative relative to Tsurf
1043      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1044    
1045    checkpoint53e_post
1046    o merged cylindrical coord configuration
1047    o added rotating_tank experiment
1048    checkpoint53e_pre
1049    
1050    checkpoint53d_post
1051    o faulks upgraded: re-generate output.txt that have changed:
1052       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1053    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1054    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1055    o added Sadourny discretization of Coriolis
1056      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1057      - re-enabled use of omega3 (useAbsVorticity)
1058    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1059      vector-invariant equations
1060      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1061    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1062      hopefully without new bugs
1063      - still to do: biharmonic friction for non-hydrostatic w
1064    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1065    o regenerated output for global_ocean_ebm (using -ieee)
1066    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1067      of mom_common/
1068      - simple re-arrangement of instructions within computing loop
1069    checkpoint53d_pre
1070    
1071    checkpoint53c_post
1072    o new version of coupler for AIM+thSIce and Ocean models
1073     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1074     - land: change Evaporation of snow
1075     - aim with thSIce: fix bug in snow-precip.
1076    o changes to calc_gw.F
1077     - bug fix for w^2 term near the bottom boundary
1078     - (hopefully) improve the lateral slip boundary condtions for use with
1079        partial/looped cells
1080      - because the bug fix changes two verification experiments anyway (exp5
1081        and plume on slope), change the lateral boundary condition from half slip
1082        to the value of no_slip_sides
1083    o ebm package wasnt quite up to the parallel task. Fixed that.
1084    o Adjoint of EBM package + verification
1085      * TLM OK
1086      * ADM not sufficient accuracy yet (needs further testing)
1087    
1088    checkpoint53b_post
1089    o Commiting new energy balance model to repository
1090      * package is pkg/ebm
1091      * verif. is verification/global_ocean_ebm
1092      * references are in ebm_driver.F
1093    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1094    C        Global thermohaline circulation. Part I:
1095    C        Sensitivity to atmospheric moisture transport.
1096    C        J. Climate 12(1), 71-82
1097    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1098    C        Global thermohaline circulation. Part II:
1099    C        Sensitivity with interactive transport.
1100    C        J. Climate 12(1), 83-91
1101    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1102    C        Destabilization of the thermohaline circulation
1103    C        by atmospheric eddy transports.
1104    C        J. Climate 7(12), 1870-1882
1105    o Will need long integration testing.
1106    checkpoint53b_pre
1107    
1108    o created pkg/mom_common in preparation for variable viscosity code
1109    o renamed and split ini_mnc_io
1110    o pkg/land: only liquid water can diffuse or run-off
1111    o AIM using land: soil wetness availability account for snow
1112    o added printMapIncludesZeros to EEPARMS namelist
1113    
1114    checkpoint53a_post
1115    o restore TAMC compatiility for exf_constants.h
1116      (no usage of _d in .h)
1117    o Additional storing in KPP in an attempt to fix
1118      TAMC problem with adjoint of KPP code.
1119      (no success...)
1120      Identical code works fine with TAF.
1121    o Fixed verification/natl_box_adjoint experiments.
1122      Initial conditions for Experiments 4 and 5 are now
1123      set to "SEAICE_initialHEFF=0", which is more reasonable,
1124      and hence gives results closer to that of Experiment 2.
1125      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1126    
1127    checkpoint53
1128    o stable checkpoint with up to date adjoint
1129      TLM tests only run for 1st grdchk at the moment. Its unclear if
1130      this is a code problem or a problem with resetting code for g_
1131      variables that is being autogenerated wrong.
1132      Otherwise:
1133       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1134       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1135         are both still in chaos following their security messes.
1136    
1137    checkpoint52n_post
1138    o various build (mostly genmake2) changes including:
1139      - ability to build/run more easily within Cygwin and MacOS X
1140      - more complicated Makefiles with a stronger dependence on Gnu Make
1141    o pkg/seaice modifications
1142      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1143        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1144        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1145      - changed proxy for geostrophic velocity and updated
1146        verification/lab_sea/results/* accordingly
1147      - removed ADI dynamic solver from pkg/seaice
1148      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1149        they caused a segmentation fault under certain circumstances
1150      - removed unused field WATR
1151    o bug fix in exf-package:
1152      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1153         now reflect that.
1154    o small fixes in the cal-package:
1155      - set reference date to first of January for the 'model'-calendar
1156      - failing of cal_CheckDate in cal_FullDate now actually results in a
1157        warning
1158    o small modifications in exf-package to increase flexibility:
1159      - change climtempfreeze from a constant to a runtime parameter that
1160        is specified in data.exf_clim (default = -1.9)
1161      - introduce runtime parameter windstressmax (default = 2.0) that is
1162        specified in data.exf
1163    o fix in pkg/thsice:
1164      - update Evap (Tsf changes) to be consistent with Latent heat flux
1165      - maintain snow precipitation unchanged (even if Tsf >=0).
1166     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1167    
1168    checkpoint52m_post
1169    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1170      this does not change any of the results, because myIter=0 in swfrac always
1171      lead to jwtype=2 (the default anyway), but the call makes little sense
1172      as a default
1173    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1174    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1175      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1176    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1177    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1178    o extending useSingleCpuIO option to work with new exch2 I/O format
1179      - old-style, missing-tile I/O is still accessible by defining CPP
1180        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1181    o monitor package can write to NetCDF files and/or STDOUT
1182    o fix re-definition bug in MNC_GRID_INIT_ALL()
1183    o doc/api_reference added
1184      - a framework for building an API Reference Manual using all
1185        the "protex" comments embedded in the code
1186      - see pkg/generic_advdiff, pkg/mnc for examples
1187    o MNC:
1188      - make myThid the last argument for all subroutines
1189      - new default for the grid files: NO halos
1190      - add useMNC and other run-time flags
1191      - separate per-file-group handling of the unlimited dimension
1192      - early initialization of MNC w/ flags read at the eeboot stage
1193        and lookup tables set in initialize_fixed
1194      - write all MNC output to a freshly-created directory
1195    o thermodynamics sea-ice (thsice) is now tested with testreport.
1196    o test exp. advect_cs: use the standard cs32 grid ; update output.
1197    o Added functionality to grdchk:
1198      pick global i,j,k position (or nearest wet) where to perform check.
1199    
1200    checkpoint52l_post
1201    o new land formulation:
1202      a) use ground enthalpy as prognostic variable to ensure exact
1203         energy conservation.
1204      b) account for water temperature and for latent heat of freezing
1205         in all processes (rain, run-off, ground storage)
1206      c) compute surface and ground temperature implicitly.
1207    o aim_v23 modification for new land model:
1208      a) Treat separately land / ocean / sea-ice surface fluxes
1209         to allow implicit computation of land & sea-ice surface temp.
1210      b) add snow precipitation.
1211    checkpoint52l_pre
1212    
1213    o fix problem (when 1 tile is empty) in min/max monitor.
1214    o fix bug in timeAve (u,vZetatave in common block)
1215    o no restoring terms under ice for pkg/seaice
1216    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1217    o bug fix for pkg/seaice pickups
1218    o change MNC call locations and add coordinate attributes
1219    o mask vorticity at the corner ; affects global_ocean.cs output
1220    o fix ini_curvilinear_grid ; test CS experiments with mpi
1221    o aim.5l_cs: modify sea-ice fraction input file ; update output
1222    o exf: Adding simple range check routine for exf fields after read
1223    
1224    checkpoint52k_post
1225    o removed top-level directory "diags"
1226      - we migrated these functions to pkg/timeave a long time ago
1227    o fixed bug introduced in pkg/monitor
1228    o accuracy ctrlprec = 32 insuffient for gradient checks using
1229      averaged fields (I/O via cost_averages)
1230      -> use ctrl.h in active_file*.F to control I/O precision.
1231    o paramter list of CALL ADTHE_MAIN_LOOP
1232    o added initial do_the_model_io to ecco
1233    o set all ...Freq to zero after cost_final
1234      taveFreq, dumpFreq, pChkptFreq
1235    o MAIN and ECCO differentiability restored
1236    
1237    checkpoint52j_post
1238    o fix nchklev in tamc.h for global_ocean...
1239    o Bringing flow and store directives up-to-date
1240    o Really weird thing!
1241      call do_the_model_io from the_main_loop with parameters
1242      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1243      TAF places a faulty re-call of initialise_varia
1244      after cost_final call which should not be there!
1245    checkpoint52j_pre
1246    
1247    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1248      error messages
1249    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1250    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1251      debug output
1252    o modfied mdsio_writefield.F to handle non-global files under exch2
1253    o update AIM Cubed-Sphere exp (aim.5l_cs):
1254      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1255    o update AIM Equatorial Channel exp:
1256      use standard aim_v23 pkg and change the SST fields to be more realistic.
1257    o globalFile now works with exch2
1258    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1259      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1260    o limit timeave output for hi-res integrations
1261    
1262    checkpoint52i_post
1263    o removed CPP_EEOPTIONS.h from verification/*/code
1264    o updated the tiling for global_ocean_pressure
1265    checkpoint52i_pre
1266    
1267    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1268      the old pkg/aim).
1269    
1270    checkpoint52h_pre
1271    o shortened offending lines in exch2_send_rx?.template
1272    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1273    o genmake2: add build & execute test for NetCDF code
1274    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1275      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1276    o added useSingleCPUIO flag to monitor.F and mon_out.F
1277    o added temporary hack for sea-ice dynamics on the cube:
1278      metric terms are ignored and it is assumed that
1279      there is no sea-ice on cube faces 1, 2, 4, and 5.
1280    
1281    checkpoint52f_post
1282    o added exch2 cube routines to pkg/exch2
1283    o modified hs94.cs-32x32x5 to use it
1284    o added new grid files to hs94.cs-32x32x5
1285    checkpoint52f_pre
1286    
1287    checkpoint52e_post
1288    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1289      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1290    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1291      to work with implicit vertical advection and AB ;
1292    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1293    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1294     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1295    checkpoint52e_pre
1296    
1297    o fix bug in impldiff when Nr=1 or Nr=2.
1298    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1299    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1300    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1301      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1302    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1303    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1304    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1305    
1306    checkpoint52d_post
1307    o re-tiled many expts to allow comparison in multi-processor mode
1308      - updated output accordingly
1309      - changed hs94.128x64x5 to use intial T from file rather than use the
1310        random number generator
1311    o add infrastructure in model routines for fizhi and gridalt packages
1312    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1313    o changes to permit hi-res, cubed-sphere, configuration
1314      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1315      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1316      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1317        of surface winds for the cube
1318      (A verification experiment, based on global_ocean.cs32x15, but with
1319       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1320       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1321       complete with example surface forcing files and matlab scripts to look
1322       at the output and compare it with that of global_ocean.cs32x15.)
1323    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1324       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1325       to conform to the common rule.
1326    o check-in the first version of the coupler + interfaces for multi-components
1327       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1328       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1329       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1330       - ocean and atmos. share the same horizontal grid (no interpolation).
1331       - exchanges between component and coupler is done in forward_step
1332    o new verification experiment, cpl_aim+ocn:
1333       coupled ocean - AIM atmosphere on cs32 grid.
1334    
1335    checkpoint52d_pre
1336    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1337    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1338    
1339    checkpoint52c_post
1340    o Fixing OPTIONS files for use of exf:
1341      - ALLOW_ECCO not needed
1342      - ECCO_CPPOPTIONS.h should not be included from
1343        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1344        as has been the case in the past
1345      - All cal/exf related options are currently set in
1346        single header file. Should remain so until we
1347        agree on a consistent new policy.
1348    o Removed all CPP options for cal package.
1349      cal has no more CPP options.
1350    o modified STOREs in GAD_ADVECTION
1351    o corrected key comp. for passkey
1352    
1353    checkpoint52b_post
1354    o new version: "thsice" of thermodynamic sea-ice pkg:
1355     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1356     - modify fluxes but do not change theta directly;
1357     - light cleaning of bulk_force pkg (still needed with thsice).
1358     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1359       + output_thsice.txt to test thsice & bulk_force pkgs.
1360    o put back grid & coriolis monitor output.
1361    checkpoint52b_pre
1362    
1363    o call "do_the_model_io" at the beginning (=> dump initial state)
1364    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1365    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1366      (need info on NUMBER_OF_PTRACERS)
1367    o missing PTRACERS headers in some routines
1368    o default tamc.h in pkg/autodiff supposed to crash
1369      to ensure proper customization
1370    
1371    checkpoint52a_post
1372    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1373      - moved surfaceTendencyTice from pkg/seaice to main code
1374      - subroutine FREEZE_SURFACE now limits only surface temperature
1375        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1376        => new output.txt for global_ocean.cs32x15 & global_with_exf
1377      - keep the old version of FREEZE for backward compatibility;
1378        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1379      - corresponding modifs for TAF directives
1380    o added surface flux output variables to TIMEAVE_STATVARS
1381    o time-averaged output for pkg/ptracers
1382    o fix problem with ECCO-related divided adjoint
1383      snapshot file was missing some ad-variables,
1384      but no warning issued by TAF
1385    
1386    checkpoint52a_pre
1387    o some bug fixes for #undef REAL4_IS_SLOW
1388    
1389    checkpoint52 = ecco_c52_e35
1390    o after testing adjoints of checkpoint51u_post
1391    
1392    checkpoint51u_post
1393    o this is the post-merge tag of the ecco-branch
1394      (needs another clean checkout and re-testing)
1395    o various natl_box_adjoint configs and results
1396      but no input fields
1397    o obcs adjoint not yet merged!
1398    o adding ECCO global 1x1 and 2x2 degree configs
1399    o updated/extended some store directives for seaice
1400    o pkg/ecco now containes ecco-specific part of cost function
1401    o top level routines the_main_loop, forward_step
1402      supersede those in model/src/
1403      previous input data.cost now in data.ecco
1404      (new namelist ecco_cost_nml)
1405    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1406    
1407    checkpoint51t_post
1408    o this is the pre-merge tag of the ecco-branch
1409    
1410    checkpoint51s_post
1411    o cleanup: removed various obsolete #define-s
1412    o pkg/grdchk
1413      - renamed 'ph-grd 3' to 'grad-res'
1414      - merged from ecco-branch
1415        (remaining bug fixes for obcs gradient checks)
1416      - additional high-precision output for testreport
1417        (grep for 'precision_grdchk_result')
1418    
1419    checkpoint51r_post
1420    o cleaned up or removed CPP_OPTIONS.h files
1421    o updated results for some of the tests to reflect the new
1422      optfiles (-ieee: -O0 instead of -O3)
1423    
1424    checkpoint51q_post
1425    o cd_code:
1426      - moved cd_scheme.F -> cd_code_scheme.F
1427      - separate read_checkpoint from cd_code_ini_vars.F
1428      - separated cd_code part from write_checkpoint
1429      - updated AD_SOURCE, generated .flow
1430      - added CD_CODE_VARS.h to the_main_loop
1431      - Moving cd_code specific store dir.s to pkg/cd_code
1432    o ctrl package totally restructured
1433      - pack/unpack now optional and decoupled from
1434        xx_/adxx_ I/O
1435      - ctrl_pack/unpack cleaned
1436        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1437      - confined inclusion of AD_CONFIG.h to where necessary.
1438    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1439    
1440    checkpoint51p_post
1441    o create initial cd_code package
1442      - WARNING: the initialization of fields within packages
1443        is broken because INI_FIELDS (where READ_CHECKPOINT is
1444        called) is called *before* PACKAGES_INIT_VARIABLES.
1445        This seems to be backwards since
1446        1) its important to initially zero the entire field including
1447           the "halo" region
1448        2) zeroing needs to be done *before* reading pickup info
1449           and the pickup call might or might not happen in any
1450           particular run
1451      - this needs an overhaul for R2
1452    o cleanup verification/*/code/GMREDI_OPTIONS.h
1453    o cleanup testreport
1454    
1455    checkpoint51o_post
1456    o bringing AD-related verif's up to date with genmake2
1457      - carbon/
1458      - global_ocean.90x40x15/
1459      - hs.94.1x64x5/
1460      - (front_relax/ )
1461    o (more) consistent directory structure for AD-related verif.'s
1462    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1463    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1464    o bug fix in find_alpha.F for MDJWF:
1465      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1466        change rho -> rho-rhoConst
1467      - replace call find_rho to find_rhonum
1468    o initialisation of rFlx extended to full array (required by TAF)
1469      and shifted to thermodynamics
1470    o removed PTRACERS.h in ptracers routine
1471    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1472    o Correcting initialisations for fVerU, fVerV.
1473    o helping TAF to recognize dependency on kUp for
1474      fVerU, fVerV
1475    o Replacing delZ by delR in pkg/ctrl/
1476    checkpoint51o_pre
1477    
1478    o undid all of cp51 pending some cleanups and discussion
1479    o added the [#include "AD_CONFIG.h"] statement to all files that need
1480       it for adjoint/tl #defines
1481     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1482     o removed tools/genmake since it no longer works
1483    
1484    checkpoint51n_post
1485    o modifications to make FREEZE flux visible to pkg/kpp
1486      - moved surfaceTendencyTice from pkg/seaice to main code
1487      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1488      - subroutine FREEZE now limits only surface temperature
1489        (this means new output.txt for global_ocean.90x40x15,
1490         global_ocean.cs32x15, and global_with_exf)
1491    o added surface flux output variables to TIMEAVE_STATVARS
1492    
1493    checkpoint51n_pre
1494    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1495    o added [#include "AD_CONFIG.h"] to all files that use the following
1496      defines:
1497      - ALLOW_ADJOINT_RUN
1498      - ALLOW_TANGENTLINEAR_RUN
1499      - ALLOW_ECCO_OPTIMIZATION
1500    
1501    checkpoint51m_post
1502    o incorporating changes to get TAMC/TAF working in genmake2
1503      - added new TAMC/TAF targets to the Makefile
1504      - various cleanups related to package handling
1505      - these changes should have no impact on the forward model
1506    
1507    checkpoint51l_post
1508    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1509     - faster algorithm for cal_addtime.F
1510     - higher precision arithmetic, where needed
1511     - pkg/exf *startdate variables changed from calendar date to
1512       model integration time
1513    
1514    checkpoint51l_pre
1515    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1516    o enable to apply restoring on S & T only in a latitude band.
1517    o update output (external_forcing_surf modif. change truncation errors)
1518       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1519    
1520    checkpoint51k_post
1521    o change default to: useNHMTerms=.FALSE.
1522     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1523       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1524     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1525        exp1, ideal_2D_oce
1526     - change data file of oceanic exp (leave the results unchanged for now)
1527       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1528    o set gravitySign automatically according to the vertical coordinate used
1529      (and change sign: back to "logical" value: +1 when R increases downward)
1530    o added an include barrier to the default CPP_OPTIONS.h and
1531      removed the #include "PACKAGES_CONFIG.h" from it
1532    o fix a bug in mom_fluxform (from chk51j_post)
1533    
1534    checkpoint51j_post
1535    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1536    o adjusted some flow directives (dynamics, thermodynamics)
1537    o added cubed-sphere case to test cost function
1538    o heckpoint_lev?_directives.h now include
1539      pkg-specific directives, whenever those are enabled.
1540    o Moving pkg-specific flow directives to corresponding pkg
1541      Moving pkg-specific differentiation list to corresponding pkg
1542      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1543      ---> conventions are
1544           - pkg_ad.flow
1545           - pkg_ad_diff.list
1546           - pkg_ad_check_lev?_dir.h
1547    
1548    checkpoint51i_post
1549    o merge of the branch-genmake2
1550      - knowingly breaks the older genmake
1551      - automatic generation of all ALLOW_${PKG_NAME} defines
1552      - new testreport supersedes older testscript
1553    o large number of package inclusion and header cleanups
1554    checkpoint51i_pre
1555    
1556    o new output for adjoin of global ocean vector invariant
1557    o fix for checkpoint of thermodynamic seaice and bulk_force
1558    o Steph gchem various cleanups
1559    
1560    checkpoint 51h_pre
1561    o fixed some single quotes
1562    o modify gchem pkg to be more versatile
1563    o modifications to clean up dic pkg
1564    o add pkg/cfc
1565    
1566    checkpoint51g_post
1567    o provide links for ARPACK and ADM*TLM
1568    o start removing verification/vero/
1569    o update AD-related stuff
1570      (in particular some IF-statements in model/src/ routines)
1571    o adding to verification/global_ocean.90x40x15/ adjoint of
1572      vector invariant setup
1573    
1574    checkpoint51f_post
1575    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1576    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1577      of tracer Green's fucntions for ocean inversion project.
1578    
1579    checkpoint51f_pre
1580    o Added on-the-fly spatial interpolation capability
1581        "USE_EXF_INTERPOLATION" to pkg/exf.
1582      - This is a temporary Cartesian-grid hack until
1583        the super-duper ESMF coupler becomes available.
1584      - See verification/global_with_exf/README for usage example.
1585      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1586        flags and modified pkg/seaice accordingly.
1587    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1588        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1589        non-local transport term.
1590    
1591    checkpoint51e_post
1592    o pkg/mom_vecinv:
1593      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1594      - add time-ave diagnostic of vorticity advection.
1595    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1596    o atmospheric geopotential: - include water vapor effect;
1597                                - use p^kappa in p* scaling.
1598    o land pkg: read initial state from files.
1599    o AIM : add stratospheric drag in the upper level
1600    
1601    checkpoint51d_post
1602    o change function ILNBLNK (=> last non-blank char.) to return zero
1603      (instead of the string length) when the string. char is empty
1604    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1605    o modif's to restore TAMC compatibility
1606      - avoid "_d" constructs in PARAMETER declarations
1607      - avoid interrupting lines by comment lines
1608    o Use cluster local disks for purely local I/O
1609      vs. globally visible disks needed for ctrl stuff
1610      (merged from ecco-branch)
1611      - new active_file_loc... and mdsio_..._loc routines
1612      - affected packages: autodiff, ctrl, grdchk, mdsio
1613    
1614    checkpoint51c_post
1615    o introducing integer flag debugLevel
1616      - debLevZero: suppress all output
1617      - debLevA: standard
1618      - debLevB: equivalent to current debugMode=.TRUE.
1619    o introducing pathname variable mdsioLocalDir for mdsio
1620      that can be specified at runtime
1621      (relevant for cluster I/O to local disk)
1622    `
1623    >>>checkpoint51b_post
1624    adjoint of ptracers
1625    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1626    o extended state in checkpoint_lev?, etc.
1627    o alternative ctrl/cost with tr1 or ptracer
1628    o new comlev1_bibj_ptracers
1629    o new ptracers.flow
1630    o made ptracers_forcing same as external_forcing_s
1631    o added verification for adjoint with ptracers
1632      - adm. grdchk fail so far
1633      - tlm. grdchk OK
1634      - checked tapelev/comlev recomputations: OK
1635    <<<checkpoint51b_pre
1636    
1637    checkpoint51a_post
1638    o added code for biogeochemistry package
1639      - new pkgs: dic, gchem
1640      - new subroutine in ptracers
1641    o modify code for biogeo packages
1642      - in model/src and pkg/ptracers
1643    
1644    checkpoint51
1645    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1646      - autodiff, ctrl, exf, grdchk, seaice
1647      kept separate packages
1648      - cost, ecco, obcs
1649    o updating verification/internal_wave, verification/lab_sea
1650      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1651    
1652    checkpoint50i_post
1653    o Preparing next differentiable checkpoint and sync
1654      of MAIN vs. ecco-branch
1655      - 1st step: this one is differentiable
1656      - 2nd step: next(! not this) checkpoint will have updated packages
1657                  from ecco-branch)
1658    
1659    checkpoint50h_post
1660    o new package "land": provide surface BC for AIM.
1661    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1662    o AIM: use true log-P extrapolation for near surface temp (= as in
1663        F.Molteni paper) ; update aim.5l_cs output.
1664    o New variable in PARM03 for more flexible pickups
1665    o somewhat cleaned package initialisation sequence for
1666      ctrl/ cost/ ecco/ in packages_... routines
1667    
1668    checkpoint50g_post
1669    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1670      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1671      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1672        made the default because of faster convergence than ADI
1673    
1674    checkpoint50f_post
1675    o exf totally restructured
1676      - replaced all exf_set_ routines by one generic exf_set_gen.F
1677        and made sure it's still differentiable
1678      - split exf_getffields.F into new exf_bulkformulae.F
1679      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1680      - updated adjoint/makefile and relevant verif. accordingly
1681    
1682    checkpoint50f_pre
1683     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1684          + change Evap over land. (update aim.5l_cs output)
1685     o added missing .cvsignores and made uniform across expts
1686     o changed configuration of tidal_basin_2d expt
1687     o added pkg/debug functions for tracing code in fatal crashes
1688     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1689     o new fn in pkg/monitor to stop model if solution grows too big
1690     o removed lots of single quotes from comments
1691    
1692    checkpoint50e_post
1693    o make KPP work with PTRACERS
1694     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1695       nearly a copy of kpp_transport_s
1696     - there is no analogue to SurfaceTendencyS, so I have to use
1697       gPtr(of the surface layer) instead
1698    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1699    checkpoint50e_pre
1700    
1701    checkpoint50d_post
1702    o change kpp output from multiple-record state files to single-record state
1703      files analogous to write_state.F
1704    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1705      analogous to the cg2d-related output.
1706    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1707      so that writing to internal file fn (with length 512) fails.
1708    checkpoint50d_pre
1709    
1710    checkpoint50c_post
1711    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1712    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1713    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1714    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1715    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1716    
1717    checkpoint50c_pre
1718    Merging from release1_p13:
1719    o bug fix for pkg/seaice dynamic solver
1720    o Added SEAICE_initialHEFF to pkg/seaice
1721    
1722    checkpoint50b_post
1723    o store u*,v* in gU,V instead of in guNm1,gvNm1
1724    o in order to put the momForcing out of the Adams-Bashforth:
1725      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1726      to timestep.F
1727    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1728    o re-generate output for highly sensitive test-exp:
1729       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1730    
1731    checkpoint50b_pre
1732    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1733    o corrected CPP option mismatch in exf_Bulk... functions for case
1734      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1735    
1736    checkpoint50a_post
1737    o Bug fix for merging between c50 and KPP.
1738      ikey was passed from thermodynamics to kpp_calc via
1739      common block rather than being recomputed in kpp_calc,
1740      in contradiction with new key itdkey.
1741      New key ikppkey created, and tamc.h headers updated.
1742    
1743    checkpoint50
1744    - 2nd step of merge with ecco-branch:
1745      merge changes in ecco-branch back into main trunk
1746    - bug fix in find_alpha
1747    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1748    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1749    - merged some sliced AD support routines
1750    
1751    checkpoint49
1752    merged from ecco-branch:
1753    o exf:
1754      - Enable initialisation of forcing fields to constant
1755        (runtime) values.
1756      - in exf_getffields.F
1757        Reduce i-/j-loop to interior domain, discarding overlaps.
1758        That also fixes wrong TAF-key computations for key_1, key_2
1759        with bulf formulae.
1760      - exf_init.F modify #ifdef for exf_init_evap
1761      - exf_getffieldrec.F, ctrl_getrec.F
1762        The following INT-usages are not safe:
1763          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1764          fldcount = int(fldsecs/fldperiod) + 1
1765        and were modified.
1766    o autodiff: checkpoint_lev...
1767      - updated storing for bulk formulae (some arrays were missing)
1768      - added state for seaice package
1769      - synchronized with main branch
1770    o DIVA:
1771      Modif.s in
1772      - the_main_loop.F
1773      - the_model_main.F
1774      and added cost_final_restore.F cost_final_store.F
1775      o With these changes, it is possible to fully separate
1776        the first forward run to compute the cost function (mdthe_main_loop)
1777        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1778        into separate model executions.
1779        This enables better tuning of DIVA to given queue sizes.
1780      o Loss of cost function value in consecutive DIVA runs is
1781        fixed by storing to 'costfinal' file.
1782      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1783        beginning/end of adjoint integration is accounted for.
1784      The current changes apply to TAF-1.4.26.
1785      TAF has one remaining bug, requiring one manual change
1786      (see MITgcm manual).
1787    o cal: synchronized between MAIN and ecco-branch
1788    
1789    checkpoint48i_post
1790    o Changes to restore differentiability of code w.r.t. previous tag
1791      (mostly adding new routines to make list and replacing
1792      pressure by totPhiHyd).
1793    o Updated and merged grdchk package
1794      - has both ADM and TLM checks
1795      - works for single- and multi-proc.
1796      - output cleaned
1797      - worked successfully for parallel DIVA
1798    o genmake:
1799      - Adding -platform=SP4
1800      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1801    o Modif. for DIVA:
1802      ctrl_unpack should not be called in intermediate DIVA interval.
1803      (similar thing would apply for active files such as
1804      tbar, sbar, psbar, which should not be reinitialised;
1805      only relevant for ecco-branch)
1806    
1807    checkpoint48h_post
1808    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1809    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1810    o Added SEAICE_initialHEFF to pkg/seaice
1811    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1812    
1813    checkpoint48g_post
1814    --- EOS:
1815    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1816      store total Potential in totPhyHyd for diagnostics & EOS.
1817    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1818    --- Pressure/geopotential gradient:
1819    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1820    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1821      ( changes results of global_ocean_pressure )
1822    o NLFS + z-coord.: add eta*Rho' contribution.
1823    o accurate phiHyd when using interface-W at the middle between 2 centers
1824     ( changes results of ideal_2D_oce )
1825    o includes r* 2nd term in potential gradient.
1826    
1827    checkpoint48f_post
1828    Merging from release1_p12:
1829    o Modifications for using pkg/exf with pkg/seaice
1830      - improved description of the various forcing configurations
1831      - added basic radiation bulk formulae to pkg/exf
1832      - units/sign fix for evap computation in exf_getffields.F
1833      - updated verification/global_with_exf/results/output.txt
1834    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1835      (SBO) core products, including oceanic mass, center-of-mass,
1836      angular, and bottom pressure (see pkg/sbo/README.sbo).
1837    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1838      to avoid negative values in shallow regions.
1839      - updated verification/natl_box/results/output.txt
1840      - updated verification/lab_sea/results/output.txt
1841    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1842    o Added useSingleCpuIO option (see PARAMS.h).
1843    o Updated useSingleCpuIO option in mdsio_writefield.F to
1844      work with multi-field files, e.g., for single-file pickup.
1845    o pkg/seaice:
1846      - bug fix in growth.F: QNET for no shortwave case
1847      - added HeffFile for specifying initial sea-ice thickness
1848      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1849    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1850      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1851    o pkg/seaice:
1852      - adjoint-friendly modifications
1853      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1854    
1855    checkpoint48e_post
1856    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1857    o dynamics: change definition of computational domain & adapt mom_fluxform
1858      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1859    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1860        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1861        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1862        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1863        inverted_barometer solid-body.cs-32x32x1
1864      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1865    
1866    checkpoint48d_post
1867    o in preparation for r*:
1868     a) use pre-computed gradient of hydrostatic potential:
1869        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1870     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1871        => affects results of glob_oce_pressure (different truncation error)  
1872      update output.txt of ideal_2D_oce & global_ocean_pressure
1873    
1874    checkpoint48d_pre
1875    o in preparation for r*:
1876      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1877      pass the 2 comp. of the grad. as arguments to momentum S/R.
1878      but for the moment, only used if it does not change the results.
1879    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1880    
1881    checkpoint48c_post
1882    Modifications in treatment of initial flux forcing controls
1883    to avoid extra storing of flux fields.
1884    
1885    checkpoint48c_pre
1886    o Added tidal_basin_2d experiment (currently 1D!)
1887    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1888    
1889    checkpoint48b_post
1890    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1891     (modification to pressure gradient not yet implemented)
1892    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1893      (for U & V) that are used for vertical advection of momentum.
1894    
1895    checkpoint48a_post
1896    o In preparation for r*, use temp. array to compute vertical transport
1897       in flux-form momentum pkg. => change results of few test-exp.
1898      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1899                        lab_sea, natl_box & plume_on_slope
1900    
1901    checkpoint48
1902    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1903    
1904    checkpoint47j_post
1905    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1906    o moved adexch from forward_step to addummy_in_stepping
1907    o added exch in ctrl_map_...
1908    o aveFreq.=0. at end of cost_final to avoid overwrite in
1909      reverse checkpointing loop
1910    o Yet more changes in gmredi:
1911      * adgmredi_calc_tensor
1912        avoiding all recomputation of gmredi_slope_limit
1913      * adgmredi_x/y/rtransport
1914        added flag for excessive storing to avoid recomp. of
1915        u/v/rtans, dTdx/y/z
1916        -> this is not really necessary and very memory-consuming
1917      * adgmredi_slope_psi:
1918        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1919      * gmredi_slope_limit
1920        re-activated full calculation of taperfct for case 'ac02'
1921    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1922    
1923    checkpoint47i_post
1924    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1925    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1926      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1927    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1928    o gmredi: fix few bugs.
1929    
1930    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1931    This will be a good checkpoint to plug into the ecco-branch.
1932    o few modif.'s to get latest version adjointed
1933      (mainly kick out code in ini_linear_phisurf)
1934    o modif's to run adjoint with exactConserv
1935    o case GM_BOLUS_ADVEC should be cleaned
1936      S/R gmredi_slope_psi should be cleaned
1937    o verification/carbon now has exactConserv=.TRUE.
1938    
1939    checkpoint47g_post
1940    o time-average AIM output: becomes independent from statvars time-average
1941      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1942    o After TAF bug fix:
1943      Tested adjoint of gmredi package.
1944      Tests were done with checkpoint47 rather than with latest
1945      checkpoint47f_post since the latter is broken for the adjoint
1946      verification/carbon/ contains both ADM and TLM gradient checks.
1947    Here they are, before they get changed/lost/stolen.
1948    Mostly modif.'s to fix numerical sensitivities.
1949    Gradient checks OK for
1950    - GM_taper_scheme:
1951      * clipping
1952      * ac02
1953      * linear
1954      * glw91
1955      * dm95
1956      * ldd97
1957    - GMREDI_OPTIONS:
1958      * GM_VISBECK_VARIABLE_K
1959      * GM_NON_UNITY_DIAGONAL
1960      * GM_EXTRA_DIAGONAL
1961      * GM_BOLUS_ADVEC
1962    in conjunction with data.gmredi parameters to be checked in
1963    in a few minutes under verification/carbon/code/
1964    
1965    checkpoint47f_post
1966    Merging from release1_p10:
1967    o modifications for using pkg/exf with pkg/seaice
1968      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
1969        and SEAICE_EXTERNAL_FLUXES
1970      - pkg/exf CPP options EXF_READ_EVAP and
1971        EXF_NO_BULK_COMPUTATIONS
1972      - usage examples are Experiments 8 and 9 in
1973        verification/lab_sea/README
1974      - verification/lab_sea default experiment now uses
1975        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
1976    
1977    checkpoint47e_post
1978    o created a tag prior to creating a branch
1979    
1980    checkpoint47d_post
1981    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
1982      at the bottom boundary had an erroneous half slip boundary condition
1983    o added bottom drag and no slip boundary condition capabilities to
1984      oceanic pressure coordinates code
1985    o added new verification experiment global_ocean_pressure, this experiment is
1986      also described in the tutorial section of the manual
1987    checkpoint47d_pre
1988    
1989    checkpoint47c_post
1990    o Added a verification experiment for a global cubed-sphere ocean run
1991      -  verification/global_ocean.cubed32x32x30
1992      -  uses pkg/therm_seaice and pkg/bulk_forcing
1993    
1994    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
1995    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
1996      when using P-coordinate; only implemented for atmospheric config.
1997    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
1998      NOTES: requires option NONLIN_FRSURF to be "#define".
1999    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2000    
2001    checkpoint47b_post
2002    Merging from release1_p9:
2003    o pkg/seaice
2004      - removed GOTO's and added taf directives
2005      - double precision constants to reduce the g77 (Linux)
2006        to F77 (SGI) differences reported in release1_p8
2007    o tools/genmake
2008      - added SGI options
2009    o verification/testscript
2010      - updated to that of checkpoint47a_post
2011    o verification/global_ocean.90x40x15/input/eedata
2012      - modified for SGI f77 compatibility
2013    o verification/lab_sea
2014      - added description of sea-ice model
2015      - added missing matlab routines
2016      - added test of thermodynamics parallelization
2017    
2018    checkpoint47a_post
2019    o new pkg: aim_v23
2020     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2021       for now, keep the same surface forcing as before.
2022     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2023     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2024     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2025    o add diagnostic of surface correction term in monitor output
2026    
2027    o bulk_force and therm_seaice
2028    - Two packages:  bulk_force (Bulk forcing)
2029      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2030    - Earlier integration from Stephaine Dutkiewicz
2031      and Patrick Heimbach.
2032    - Two ifdef statements for compile time,
2033       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2034    
2035    checkpoint47
2036    differentiable version of checkpoint46n_post
2037    o bug fix in quasihydrostaticterms
2038    o * "clean" adjoint code (in terms of extensive recomputations)
2039        can now be obtained for all GMREDI options (i.e. for
2040        - GM_VISBECK_VARIABLE_K
2041        - GM_NON_UNITY_DIAGONAL
2042        - GM_EXTRA_DIAGONAL
2043        - GM_BOLUS_ADVEC )
2044      * However, wrong gradient check problem remains unsolved.
2045      * New CPP options have been introduced for different
2046        tapering schemes
2047    o external_fields_load now part of differentiation list
2048    o pressure needs multiple storing;
2049      would be nice to have store_pressure at beginning or
2050      end of forward_step, e.g. by having phiHyd global (5-dim.)
2051      (NB: pressure is needed for certain cases in find_rho,
2052      which is also invoked through convective_adjustment).
2053    o recomputations in find_rho for cases
2054     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2055    o #define ATMOSPHERIC_LOADING should be differentiable
2056    o ini_forcing shifted to begining of initialise_varia
2057    o Incorporating QNVS line search routines into MITgcm
2058      (this is separate code, and therefore not under pkg)
2059      lsopt/, optim/
2060    o Updated verification/carbon/
2061      - #define GM_VISBECK_VARIABLE_K
2062      - GM_taper_scheme    = 'ldd97'    
2063    
2064    checkpoint46n_post
2065    Merging from release1_p8:
2066    o verification/natl_box:
2067      updating new external_fields_load routine
2068    o New package: pkg/seaice
2069      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2070      The sea-ice code is based on Hibler (1979-1980).
2071      Two sea-ice dynamic solvers, ADI and LSR, are included.
2072      In addition to computing prognostic sea-ice variables and diagnosing
2073      the forcing/external data fields that drive the ocean model,
2074      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2075      The implied surface heat flux is then stored in variable
2076      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2077      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2078      non-local transport term.  Because this call precedes model
2079      thermodynamics, temperature under sea-ice may not be "exactly" at
2080      the freezing point by the time theta is dumped or time-averaged.
2081      N.B.: fairly large differences in accuracy occur across
2082            different platforms/compilers; comparison between
2083            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2084            generated output gives:
2085       T           S           U           V
2086      C D M    c        m  s        m  s        m  s        m  s
2087      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2088      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2089      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2090    
2091      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2092    o GAD:
2093      - generated new common blocks to account for call of
2094        same gad routines with differing traceridentities
2095        (needed to modify tracerIdentity indices in GAD.h)
2096      - generated separate common blocks for case useCubedSphereExchange
2097        (Department of Futurology)
2098      - parameter lists to gmredi_?transport: added tracerIdentity
2099      - added new key indices to tamc.h
2100    o external_fields_load:
2101      - added this routine to TAF list
2102      - needed to make some common blocks global and additional storing
2103        along the same lines as exf package (checkpoint_lev?_directives.h)
2104    o exf:
2105      updated external forcing package
2106      - bug fixes carried over from ecco-branch
2107        (missing OBCS_OPTIONS.h in two routines)
2108      - enable easy to use "no forcing".
2109      - added exf I/O for atmospheric loading
2110      - added exf I/O for runoff data
2111      - transfered scaling between exf <-> MITgcm to exf namelist
2112    o Adding new verification experiment global_with_exf.
2113      This verification experiment is almost identical to the
2114      global_ocean.90x40x15 experiment, except that it uses
2115      the exf (and cal) package instead of the
2116      external_fields_load routine (cf README file).
2117    
2118    checkpoint46m_post
2119    o modified testscript to return -- when there are no lines of "%MON" output
2120    o added new flag "quasiHydrostatic" for QH mode
2121      and new routine quasihydrostaticterms()
2122    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2123      New routine: mom_u_coriolis_nh()
2124    o fixed sign of non-hydrostatic metric terms in u and v equations.
2125      Depend on correct sign of gravitySign.
2126    o added work.pc* to .cvsignore in aim directories using ifc
2127    o introduced flag for controllin non-hydrostatic metric terms
2128    o removed gravitySign from PARM04
2129    o switched to g77/ifc from pgf77 in aim experiments
2130    
2131    checkpoint46l_post
2132    o made convective adjustment work with pressure coordinates:
2133     - changed the direction of k-loop in convective_adjustment.F for the
2134       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2135     - adjusted the reference pressure k-index in convective_adjustment.F
2136     - adjusted the convection condition in convect.F (in analogy to
2137       calc_ivdc.F)
2138     - convective_adjustment no longer computes anything on the halos
2139     - removed the warnings about negative salinity from find_rho.F and
2140       find_alpha.F; instead the new routine look_for_neg_salinity, called
2141       at the beginning of find_rho, find_alpha, and find_beta, does a
2142       check of the entire slice, if CPP-option
2143       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2144    checkpoint46l_pre
2145    
2146    checkpoint46k_post
2147    o fixed the verification/global_ocean.90x40x15 experiment:
2148     - new bathymetry (the world according to A., JMC, and M.)
2149     - new initial fields and forcing fields (*.bin files)
2150     - new POLY3.COEFFS (for the next release one should switch to a full
2151       equation of state: JMD95P or MDJWF)
2152     - fixed several errors and redundancies in the data file
2153     - experiment uses looped cells
2154     - added matlab directory with diagnostic scripts for plotting of output
2155    
2156    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2157     - read AIM physics parameters from a file (data.aimphys)
2158     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2159    
2160    checkpoint46j_post
2161    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2162    o move wVel computation at the end of the time step, in S/R integr_continuity
2163    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2164    o update timeave pkg for wVel diagnostic.
2165    checkpoint46j_pre
2166    
2167    checkpoint46i_post
2168    o Clean up AIM package (and keep the results unchanged):
2169      include CPP_OPTION and use IMPLICT NONE in all routines ;
2170      declare all the variables _RL ; use _d 0 for all numerical constants.
2171      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2172    
2173    checkpoint46h_post
2174    o cleaned up the use of rhoNil and rhoConst.
2175      - rhoNil should only appear in the LINEAR equation of state, everywhere
2176        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2177        and the dynamical equations are all divided by rhoConst
2178    o introduced new parameter rhoConstFresh, a reference density of fresh
2179      water, to remove the fresh water flux's dependence on rhoNil. The default
2180      value is 999.8 kg/m^3
2181    o cleanup up external_forcing.F and external_forcing_surf.F
2182      - can now be used by both OCEANIC and OCEANICP
2183    checkpoint46h_pre
2184    
2185     Added code to convert surface volume flux (fresh water) into
2186     a mass flux when using P coordinates in the ocean (OCEANICP).
2187     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2188    
2189    checkpoint46g_post
2190    o Include a new diagnostic variable phiHydLow for the ocean model
2191      - in z-coordinates, it is the bottom pressure anomaly
2192      - in p-coordinates, it is the sea surface elevation
2193      - in both cases, these variable have global drift, reflecting the mass
2194        drift in z-coordinates and the volume drift in p-coordinates
2195      - included time averaging for phiHydLow, be aware of the drift!
2196    o depth-dependent computation of Bo_surf for pressure coordinates
2197      in the ocean (buoyancyRelation='OCEANICP')
2198      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2199        Theta, Salinity, and Pressure in the parameter list. This routine is
2200        presently contained in find_rho.F. This routine does not give the
2201        correct density for 'POLY3', which would be a z-dependent reference
2202        density.
2203    o cleaned up find_rho
2204      - removed obsolete 'eqn' from the parameter list.
2205    o added two new verification experiments: gop and goz
2206      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2207    checkpoint46g_pre
2208    
2209    checkpoint46f_post
2210    o Enable tangent linear (forward mode) gradient checks:
2211      - extended active file handling to g_... files
2212      - added TANGENT_SIMULATION to theSimulationMode
2213      - extended grdchk package accordingly
2214    o added tangent linear setup in verification/carbon/code_ftl
2215    o added adjoint setup in verification/front_relax/code_ad
2216    
2217    checkpoint46e_post
2218    o Added new equation of state -> MDJWF
2219      - EOS of McDougall et al., 2002, JAOT, submitted
2220      - caveat: the equation of state is only valid for a smaller (more
2221        realistic?) range of values than JMD95P/Z and UNESCO
2222      - added masks to the calculation of pressure in store_pressure
2223      - added more check values for density in check_eos (ini_eos.F), some of
2224        the old check values are out of the range of the MDJWF-eos, so don't
2225        expect perfect matches for those
2226    checkpoint46e_pre
2227    
2228    checkpoint46d_post
2229    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2230      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2231      case of pressure coordinates. eosType='JMD95Z' in
2232      combination with buoyancyRelation='OCEANICP' now causes an error.
2233    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2234      in find_alpha/beta.
2235    checkpoint46d_pre
2236    
2237    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2238      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2239    
2240    checkpoint46c_post
2241    o Changes necessary for ocean in p-coordinates
2242     -  Added new buoyancy relation = 'OCEANICP'
2243     -  Added new parameters = gravitySign (this used to be contained inside
2244        the factor dRdZ which I added when we first switched to R coordinates).
2245     X GM/Redi is not compatible (yet)
2246     X bottom drag and no-slip need to be debugged.
2247    checkpoint46c_pre
2248    
2249    checkpoint46b_post
2250    o Added new equation of state -> JMD95Z and JMD95P
2251      - EOS of Jackett and McDougall, 1995, JAOT
2252      - moved all EOS parameters into EOS.h
2253      - new routines ini_eos.F, store_pressure.F
2254    o Added UNESCO EOS, but not recommended because it requires
2255      in-situ temperature (see JMD95)
2256    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2257      unesco.f to be used with POLY3
2258    checkpoint46b_pre
2259    
2260    checkpoint46a_post
2261    o Added (atmospheric) pressure loading
2262      - new field in FFIELDS.h, etc...
2263      - new cpp flag ATMOSPHERIC_LOADING
2264    o Changed hFacC to _hFacC in calc_phi_hyd.F
2265    o Added SHORTWAVE_HEATING to some files for consistency
2266    checkpoint46a_pre
2267    
2268    checkpoint46
2269    further merges from release1_p5
2270    o new ctrl package
2271      - adopted from ECCO environment to enable optimization
2272      - added Eliassen Palm fluxes to controls
2273    o added Eliassen Palm flux controls to gradient check package
2274    o cost package
2275      - Compatible with new ctrl package
2276      - added Eliassen Palm cost hooks
2277      - modif's of existing cost functions
2278    o Adjoint-related bug fixes in kpp:
2279      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2280      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2281    o autodiff package
2282      - flow directives:
2283        + new for S/R do_the_model_io
2284        + enhanced for S/R checkpoint
2285        + new gmredi.flow
2286      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2287        disable adcommon.h/g_common.h by default.
2288      - fixed problem for adjoint of global_max
2289    o modified verification/carbon/
2290    o New setup for adjoint of global_ocean
2291    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2292    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2293    o incorporated hooks for sponge layer code (external_forcing.F)
2294    
2295    checkpoint45d_post
2296    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2297    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2298      (affects plume_on_slope "cg2d" output)
2299    o add new parameter deltaTfreesurf for free-surface time stepping
2300    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2301    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2302    o change phiMin in exp1 (to agree with documentation)
2303    o add new flags:
2304     - T,S forcing inside/outside Adams-Bashforth
2305     - turn off temp,salt advection and/or forcing
2306     - for each tracer, define internal flag for multiDimAdvection & A-B
2307    o monitor: change definition of KE to check conservation of Energy
2308    
2309    checkpoint45c_post
2310    o Removed f90 comments ("!")
2311    o Modified initialisations to enable exf package for MITgcm
2312      (without invoking ECCO_PACKAGE).
2313    o modifications to gradient check package (Martin Losch)
2314      - enable centered differences
2315      - modified format of standard output
2316    
2317    checkpoint45b_post
2318    o cleaned exchange calls in cg2d
2319    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2320    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2321      to configure barotropic setup (Martin Losch)
2322    o moved some initialisations within bi,bj loop in dynamics
2323      (TAF flow dependency)
2324    o in initialise_varia, moved call packages_init_variables
2325      before convective_adjustment_init
2326      (corresponding adjustment of TAF tape initialisation).
2327    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2328    
2329    checkpoint45a_post
2330    o compute Rho over the whole domain (extend iMin,jMin indices)
2331    o specific exchange for X-slice domain (case Ny=1)
2332    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2333    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2334    
2335    checkpoint44h_post = checkpoint45
2336    o Fix to restore differentiability:
2337      place at which packages_init_variables is called in
2338      initialise_varia is crucial for reverse control flow.
2339    o modifications in GMRedi to enable stable adjoint
2340      (corresponding modif's in thermodynamics, dynamics)
2341    o added missing hook for sponge layer code in external_forcing
2342    o modified test cost functions
2343    o storing in gad_advection (plus removal of write(0,*)!
2344    o missing headers TR1.h added in convective_adjustment routines
2345    o errorMessageUnit set non-equal zero in eeboot
2346      (conflict on some platforms, e.g. IBM SP3)
2347    o modified carbon verif.
2348    
2349    checkpoint44h_pre
2350    o vertical grid option: allow to put the Interface at the middle between
2351      2 cell-centers ; replace delZ in pkg/kpp by drF.
2352    o GM Advective form: Tracers are advected using the residual transport (=
2353      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2354    
2355    checkpoint44g_post
2356    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2357      results) ; ifdef missing in thermodynamics.F
2358    
2359    checkpoint44f_pre,checkpoint44f_post
2360    o added PTRACERS package
2361      This allows an arbitrary number of passive tracers to be integrated
2362      forward simultaneously with the dynamicaly model.
2363      + Implemented so far:
2364        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2365        - I/O and checkpointing
2366        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2367      + Not implemented so far:
2368        - KPP
2369        - OBCS
2370      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2371        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2372        line in data.pkg.
2373      + This package is disabled by default since it increases storage.
2374    
2375    
2376    o testscript: added -cleanup option
2377    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2378                 b) enable to filter 2D fields.
2379    
2380    checkpoint44e_pre,post
2381    o re-wrote convective adjustment to use pre-calculated weights
2382      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2383      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2384      Original calls to convect() still in place.
2385    
2386    chkpt44d_pre,post
2387    o added missing EXCLUDE_MONITOR flags
2388    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2389      (incompatible typ in MIN/MAX expressions caused problems
2390      on IBM SP3)
2391    o in genmake added variable MAKEDEPEND
2392      plus resetting for case SunOS
2393    o added timer_stats.c routine for IBM SP3
2394    o removed variables in dynamics
2395    !!! I forgot to create tag chkpt44d_pre !!!
2396    !!! But chkpt44d_pre = chkpt44c_post    !!!
2397    
2398    o real fresh water flux implemented with non-linear free-surface.
2399    
2400    chkpt44c_pre,post
2401    o few fix (mask in shap_s2, EmPmR in external_field_load,
2402      USE_NATURAL_BCS in solve_for_P);
2403    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2404    
2405    checkpoint44b_pre/_post
2406    o merge of relevant stuff from the ecco-branch:
2407      - genmake: removed $S64 overwrite for case SunOS
2408      - pkg/exf: update and corrections for field swapping and obcs
2409      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2410                  harmonized between ECCO and MITgcm
2411      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2412                      updated checkpointing_lev... lists for obcs
2413      - model/src: minor changes in forward_step, plot_field
2414                   added directive for divided adjoint in the_main_loop
2415      - pkg/mdsio: added mdsio_gl_slice
2416    
2417    o check parameters & config (chkpt44a_pre,post)
2418    o OBC and NonLin_FrSurf.
2419    
2420    checkpoint44
2421    o fix bug in mom_vi_del2uv
2422    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2423    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2424    o update AIM experiments (NCEP input files)
2425    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2426    o added some stuff for AD
2427    
2428    checkpoint43
2429    o added two new advection tests
2430    o added global 4x4 degree ocean test
2431    o added test of H&S94 with free surface on cube
2432    o some final mods for gradient check, adjoint,...
2433    
2434    checkpoint42
2435      Fixed AD-related problems:
2436    o Store directives up-to-date with re-arranged Adams-Bashforth
2437      (mainly thermodynamics.F)
2438    o New store directives for multi-dim. advection schemes
2439      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2440      * new common block and key passkey
2441      (mainly gad_advection.F)
2442    o Modified store directives for split of dynamics/thermodynamics
2443      for the case ALLOW_KPP
2444    o Cleaned argument list for timestep_tracer.F
2445    
2446    checkpoint41
2447    o re-formatted/added comments in prologues of key subroutines
2448      to work with protex
2449    
2450    checkpoint40
2451    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2452    o added FLT (floats) package from Arne along with demo. experiment
2453    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2454      implementation of forward-in-time forcing terms
2455    o more mods for non-linear free-surface including new variable
2456    o modified multi-dim method to work on cube
2457    o bug fix in KPP (from DM)
2458    
2459    checkpoint40pre9
2460    o added DST advection schemes
2461    o fix MPI bug on SGI's
2462    o modifications for non-linear free-surface
2463    o fixed conditionals for fixed flow/passive tracer only mode
2464    o added tension/strain form of stress tensor
2465    o changes to commenting of arguments for TAF/TAMC
2466    o added/updated many matlab scripts
2467    o added multi-dimensional advection method for tracers
2468      
2469    checkpoint40pre8
2470    o new package rw/
2471      Added method for dumping intermediate local arrays:
2472      mdsio_writetile - same as mdsio_writefield except works from inside
2473                        bi,bj loop
2474      mdsio_writelocal - same as mdsio_writetile except works for local
2475                         arrays
2476      write_local_r? - higher-level wrapper for mdsio_writelocal
2477      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2478      Example given at end of mom_vecinv.F that dumps some local arrays.
2479    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2480      control flux-form versus vector invariant code.
2481      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2482      or genmake -DISABLE ...
2483    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2484      (additional storing is now needed for case vecinv;
2485      currently nothing implemented to switch this storing off
2486      in case fluxform is used since no CPP flag available).
2487    
2488    checkpoint40pre7
2489    o bug fix in dynamics.F
2490      calc_viscosity called before k=1,Nr loop.
2491    o added some #ifdef's ALLOW_PASSIVE_TRACER
2492    o cleaned initialisations in ctrl_map_ini
2493      related to TAF
2494    
2495    checkpoint40pre6
2496    o split dynamics into thermodynamics & dynamics
2497    o corresponding split of calc_diffusivity into
2498      calc_diffusivity, calc_viscosity
2499      (kpp_calc_diff, kpp_calc_visc).
2500    o Added diffkr, kapgm to control variables
2501    o bug fix in gmredi_slope_limit for ldd97
2502    
2503    checkpoint40pre5
2504    o proper initialization of Adams-Bashforth time stepping
2505      + uses forward step for very first step of model (iter=0)
2506    o re-generated *all* output since almost all output is modified by this
2507      change (sorry but we've been putting this one off for about 2 years)
2508      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2509        *not* regenerated since they are already out of date and I don't
2510        want to create the impression that they are suddenly working.
2511    o removed KAP stuff for DEC's
2512    o modified/added many .cvsignore files in */code and */input
2513    o added new expt "solid-body.cs-32x32x1"
2514      + this uses an alternative form of ini_curvilinear_grid.F which
2515        is not necessarily any better than the current one...
2516    
2517    checkpoint40pre4
2518    o added re-initialisations of utrans,vtrans,rtrans in
2519      calc_common_factors which are crucial for TAF.
2520    o extended iMin,jMin range for calc_common_factors,
2521      calc_diffusivity
2522    o added option ALLOW_PASSIVE_TRACER
2523    o a few minor updates and fixes
2524    
2525    checkpoint40pre3
2526    o created calc_gtr1.F for gad package
2527    o split the_main_loop and re-introduced forward_step
2528    o some recomputations of nIter0 for TAMC
2529    
2530    checkpoint40pre2
2531    o Updated to latest branch of AJA, JMC
2532    o Added gradient check package
2533    o Added routines for passive tracer handling
2534    o Added carbon sequestration sensitivity experiment
2535    
2536    checkpoint39
2537     o Modifications and fixes to support TAMC
2538       (mainly missing or wrong directives)
2539     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2540       in addummy_in_stepping
2541     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2542     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2543     o Included following packages:
2544       cal: calendar
2545       exf: external forcing
2546       ecco: essential routines to control use of cal, exf
2547             (NB: this is not the full ECCO environment)
2548     o disabled some packages by default in genmake
2549    
2550    checkpoint38
2551     o see notes_c37_adj.txt
2552     o corrected wrong layer index in external_forcing_t
2553     o replaced the_main_loop/forward_step by the_main_loop
2554     o removed forceoutput from write_state
2555       (replaced criteria for initial/final state)
2556     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2557    
2558    checkpoint37
2559     o mdsio.F routine split and packaged in pkg/mdsio
2560       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2561        used unless genmake -disable=mdsio)
2562     o allow a more precise surface-geopotential gradient for the atmosphere
2563       taking into account the change in space of Alpha (=1/rho) at the surface.
2564     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2565       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2566     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2567       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2568       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2569     o Time-Average diagnostics defined as a pseudo package "timeave".
2570     o pickup files : old pickup (before c35) did not work with new code (c35
2571       and after) unless activating 2 commented lines in initialise-varia.
2572     o Non-Hydrostatic pickup file Pb fixed.
2573     o bug with Rigid-lid version (since c35) fixed.  
2574    
2575    checkpoint36
2576     o implement Crank-Nickelson barotropic time-stepping
2577     o recover Time-Average diagnostics
2578     o fix Pb in checkpoint (PR#19)
2579     o AIM become a standard package ; clean unused CPP_kees
2580    
2581    checkpoint35
2582     o subtantial rewrite of dynamics.f
2583     o allows staggered time-stepping
2584     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2585     o added bottom drag (linear + quadratic)
2586    
2587    checkpoint34
2588     o Modified exchange routines for correct reverse simulation.
2589     o Added verification output to comply with bug fix in impldiff.F
2590       as of c33 (exp2, natl_box).
2591     o Corrected store directives in dynamics.F
2592     o Corrected array boundaries in impldiff.F
2593     o Corrected array dimensions in gmredi.
2594       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2595     o Added routine GLOBAL_SUM_INT to global_sum.F
2596     o Added mdsio_gl.F for ECCO purposes.
2597    
2598    checkpoint33
2599     o Fixed bug in lower BC in impldiff.F
2600     o Fixed confusion about units of forcing arrays in FFIELDS.h
2601       namely Fu,Fv,Qnet,Qsw,EmPmR:
2602       - Removed verification/natl_box/code/external_fields_scale.F
2603         (did not differ from that in model/src)
2604       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
2605         (see FFIELDS.h for description)
2606       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
2607         kpp_calc.F and kpp_transport_t.F
2608       - Removed model/src/external_fields_scale.F and calls to it
2609       - verification/natl_box uses flux data with "atmospheric" sign so
2610         a special version of external_fields_load.F is used to
2611         change the data as it's read in. This way, the arrays
2612         have the right units and signs at all times tha a user could
2613         possibly use them.
2614     o Corrected genmake to delete a temporary file during configuration
2615    
2616    checkpoint32
2617     o Scaling of forcing fields moved from external_forcing.F to
2618       external_fields_scale.F, called directly after loading fields.
2619     o Surface relaxation terms added to surface tendency fields in
2620       extra subroutine.
2621     o impldiff.F changed to avoid storing by TAMC of huge intermediate
2622       fields.
2623     o Changes in GMRedi to comply with packaging structure.
2624     o Modifications and bug fixes in KPP package.
2625     o Verification experiment for KPP added (verification/nat_box/)
2626    
2627    checkpoint31
2628     o Packages interface brought in line with defined standard
2629       -> new routines packages_...F
2630       -> changes in initialise_fixed.F, initialise_varia.F
2631       -> enables initialisation interface for ECCO package
2632     o Rescaling of external forcing fields immediately after read
2633       (removed from external_forcing.F)
2634       -> new: surface_fields_scale.F
2635       -> affects ini_foorcing.F, external_fields_load.F
2636     o Computation of surface tendencies before tendency updates.
2637       -> new: external_forcing_surf.F
2638     o Change of variable names useGMRedi, useKPP, useECCO
2639     o Further changes in dynamics.F, impldiff.F for TAMC
2640     o Tested for experiments 0, 2, 4.
2641       - not yet tested for GMRedi.
2642       - not yet tested for KPP.
2643    
2644    checkpoint30
2645     o Updates for OBCs
2646     o New experiment for test OBCs (internal_wave)
2647     o New output.txt in verification/exp4/results/
2648     o Updates for KPP: calculation of viscosity corrected, new variables
2649       kpp_dumpFreq and kpp_taveFreq
2650     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
2651       and entry for T90 in genmake
2652    
2653    checkpoint29
2654     o packaged KPP and GM/Redi
2655    
2656    checkpoint28
2657     o Corrected initialization of hFacMin for difference vertical coordinates
2658     o Modified calculation of partial cell thickness to more robust algorithm
2659     o config_summary.F: replaced write_1D_... by write_0D_...
2660       read_write.F: added subroutines write_0D_...
2661     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
2662       included some initialisations required for TAMC.
2663     o routine calc_isoslopes: modified sqrt computation to make it
2664       differentiable for zero argument.
2665     o routines dynamics, impldiff:
2666       included store directives and tape key computations required for TAMC.
2667     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
2668    
2669    checkpoint27
2670     o fixed calc_isoslopes() to so that cancellation of terms in tensor
2671       formulation works properly with variable resolution.
2672     o restructured the calling tree between the_model_main() and dynamics()
2673     o split initialise() into initialise_fixed() and initialise_varia()
2674     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
2675       in new routine ini_psurf()
2676    
2677    checkpoint26
2678     o moved some #ifdef in optional routines to encompass everything
2679       except the argument declarations. This was using up some memory.
2680     o fixed macros like _ADT to work with both versions of Linux cpp
2681     o cleaned up some unused and uninitialized variables
2682       (helps when debugging with strict compile options)
2683     o split up CPP_EEOPTIONS.h into options and macros
2684       (macros are now in eesupp/inc/CPP_EEMACROS.h)
2685     o patch for 2 processor JAM mode
2686    
2687    checkpoint25
2688     o updates for OBCs and NH
2689     o dramatically reduced memory usage
2690     o added "JAM" routines for use on Artic network
2691     o parameterization of convection by implicit vertical diffusion
2692     o added a diagnostic of convective index
2693     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
2694       (this is was partly for OBCs and NH but also in anticipation of
2695        an explicit free-surface option)
2696     o initial state input files for U and V
2697    
2698    checkpoint24
2699     o Removed some spurious "REAL"s
2700     o Updated KPP to latest version from JPL
2701     o Added a COS(latitude) in horizontal viscosity
2702    
2703    checkpoint23
2704     o Added del^4 diffusion for salt and temperature
2705     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
2706    
2707    checkpoint22
2708     o Made many small changes: implicit none, format(i5), etc...
2709     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
2710    
2711    checkpoint21
2712     o Introduced new I/O package that supports direct-access records (mdsio.F)
2713     o Split-up mid-level I/O routines
2714     o Updated input data for experiments 0,1,2,4 and 5
2715     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
2716    
2717    checkpoint20
2718     o Tidied up open-boundaries some more
2719     o Added non-hydrostatic code
2720     o Fixed some input data
2721     o Modified MPI start-up to work in "coupled" context.
2722    
2723    checkpoint19
2724     o Tidied up directory structure for verification experiments.
2725     o Added new code for open boundaries.
2726     o Corrected advective terms near boundaries.
2727     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
2728     o Implemented free-slip/no-slip BCs and del^4 dissipation.
2729     o Split default parameters out of ini_parms.F into set_defaults.F.
2730    
2731    checkpoint18
2732     o Further changes for optional code generation with
2733       CPP - ugh!
2734    
2735    checkpoint17
2736     o Beginning to incorporating modularity
2737       for supporting atmos. and ocean configs.
2738     o Small changes for TAMC complinace
2739     o New ultra simple test case. Barotropic box
2740       configuration "exp0".
2741    
2742    checkpoint16
2743     o Minor changes to exchange routines to support
2744       accumulation in reverse mode. Adjoint of an
2745       assignment is an addition.
2746     o Changes to support compilation by TAMC (LR(1)
2747       syntax) and by g77 under Linux ( 72 character
2748       limit ).
2749    
2750    checkpoint15
2751     Rewrote exchange routines to allow
2752     o General tile <-> tile connectivity.
2753     o TAMC reverse mode flag ( is this really needed? )
2754     o Variable width overlap and exchange region widths.
2755     o Hooks for sharing data via DMA, Arctic, Memory Channel,
2756       shmput/shmget, VIA, SYSV shmem and every other cool
2757       communication method.
2758    
2759    checkpoint14
2760     Consistent isomorphism chages made. These allow dynamical core
2761     to support both pressure and meters as a vertical coordinate.
2762    
2763    checkpoint13
2764     Release which corrects global_max problem and a couple
2765     of KGM time-averaging diagnostic errors. Also contains
2766     a double-gyre experiment setup as well as the baseline
2767     4 degree global template. The double gyre template is
2768     organised to allow it to be applied automatically to
2769     the baseline configuration.
2770    
2771    branch-point-rdot
2772     A few tidy-ups have been made bt the real point of this
2773     check-point (excuse the pun) is to allow a branch to be
2774     made for the purposes of adding the rDot alterations.
2775     I don't want to commit the rDot to the main-trunk until
2776     we've actually tested it...
2777    
2778  checkpoint12  checkpoint12
2779   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
2780   configure script).   configure script).

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