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revision 1.125 by jmc, Mon Jan 27 21:42:19 2003 UTC revision 1.643 by jmc, Thu Mar 30 20:59:21 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 move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
8      and add those terms in Vector-Invariant formulation.
9    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
10      if the control period (xx_hfluxperiod etc) is 0
11    o in profiles pkg, clean routines and fix details
12    o in ecco pkg, reading ssh data:
13      fix problem in case the model does not start at iter0=0
14    o fix mnc-pickup/restart for ptracers
15    o new package prifiles:
16      code to compute profile-based cost by Gael Forget
17      (modifs in ecco, ctrl, autodiff)
18    o Benign bug fix in initialization (spotted by M. Mazloff) of
19      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
20    
21    checkpoint58c_post
22    o adjoint: finish NLFS adjoint and provide reference output in
23      verification/global_ocean.90x40x15/results_ad_nlfs
24    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
25      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
26      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
27      with SEAICE_CGRID defined.
28    o move calendarDumps from "data" to "data.cal" and clean-up the code
29      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
30    o add useEXF & useCAL flags (for now, set in hard-coded way)
31    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
32      (were missing in NH mode, and wrong in quasihydrostatic mode).
33      waiting for Chris updated version of calc_gw to add those CALLs.
34    o fix bug in quasihydrostatic S/R ;
35      add a test for this option: global_ocean.90x40x15.qshyd
36    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
37      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
38    o add on/off flag useOffLine for package OFFLINE
39    o seaice:
40      - modify advection so that it works also on the C-grid
41      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
42        problem in multi-tile runs with C-grid
43      - add flags for clipping ice velocities and/or masking solver forcing
44      - fix drag (ocean on ice) formulation and a bug that caused noise in the
45        C-grid solver
46      - added a few comments to seaice_diffusion.F
47      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
48        are now exclusive)
49      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
50        required re-ordering the code a little:
51       + make DAIRN global variable (defined in SEAICE)
52       + move computation of the viscosities eta and zeta into a new separate
53         routine (because I need to recompute them in seaice_ocean_stress.F)
54    
55    checkpoint58b_post
56    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
57      update output.txt of exp. aim.5l_cs.thSI
58    o various mnc cleanups and improvements:
59      + shrink lookup tables by factor of ~4
60      + better error reporting when running out of lookup space
61      + able to handle longer path/file names (up to 500 chars)
62    o adjoint:
63      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
64      - TBD: "hidden" mom_vecinv recomp. in dynamics
65    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
66     (allow to differentiate between forcing components using new integer flags:
67      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
68     and add new flag to put Dissipation tendency out of Adams-Bashforth.
69    o ecco
70      - enable trend removal from SSH anomaly obs.
71    o adjoint
72      - a fix for PmEpR when #undef EXACT_CONSERV
73      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
74      - try to fix "hidden" recomp. in forward_step for NLFS
75        (NLFS seems broken sometimes after I checked it in)
76    o seaice:
77     - add c-grid version of the dynamic solver:
78       + three new routines that are the c-grid substitute lsr, dynsolver
79         and ostres
80       + put a few fields that were local to dynsolver into global common
81         blocks, so that I can move the computation of stresses etc into
82         seaice_lsr (saves coding but may break the adjoint).
83     - replace more hardwired parameters by runtime parameters
84     - add ice masks that mask the rhs of the implicit solvers where there
85       is no ice (commented out in seaice_dynsolver, because i am not sure
86       if this works properly), eventually this should replace the clipping
87       of ice velocities in seaice_dynsolver to +/-40cm/s.
88    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
89      include it only where its needed
90    o move balancing of fluxes before the call of external_forcing_surf
91    o seaice:
92      - correct units of turning angles (now they are really in degrees)
93      - move computation of GWATX/Y out of main routine into dynsolver
94      - initialize GWATX/Y in seaice_init
95    o Apply mask on Fresh-Water flux (needed for SSH forcing).
96      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
97    o seaice: add runtime flags for turning angles (default to zero)
98    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
99      and trend from exf forcing and ctrl control adjustments
100    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
101      (since checkpoint57x_post)
102    o change the default rotation period to 86164.s = the Earth rotation
103    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
104      and based on a reference stratification. Tested within hs94.cs-32x32x5.
105    o seaice advection: add code for choosing between the default (2nd order
106      central differences) and multiDim advection schemes provided by
107      pkg/generic_advdiff
108    o seaice:
109      - removed all references to SEAICE_GRID.h fields from
110        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
111        (cubed-sphere configuration will change a little)
112      - grid computations in seaice_init are obsolete now.
113      - cleaned up code a little so that is easier to read (hopefully).
114      - added new (better?) discretizations of default advection and diffusion
115        (turn on with SEAICEuseFluxForm)
116      - replace 1 in 3d global fields by kSurface in growth.F
117      
118    checkpoint58a_post
119    o seaice:
120      - bug fix in advect.F
121    o shelfice:
122      - separate shelfice load anomaly from pload (breaks with time
123        dependent forcing), => introduce constant field shelficeLoadAnomaly.
124        Its default is 0., but it may be computed more cleverly from (unknown)
125        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
126        done offline. A good approximation of the pressure load anomaly is
127        necessary to avoid large initial adjustment processes underneath
128        deep-reaching shelfice.
129      - small fix in ISOMIP shelfice_thermodynamics
130      - add more sophisticated thermodynamics of Hellmer (1989), this is
131        now the default
132      - give a few constants more intuitive names
133    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
134      if bulk formulae are used in long integration (especially EmPmR). Turn
135      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
136      if balancePrintMean, the imbalance that is substracted is printed to
137      STDOUT.
138    o fix bug (typo) in obcs_apply_eta.F
139    o add a new package shelfice which enables us to model the circulation
140      underneath shelf-ice with draughts of hundreds of meters.
141     - works
142     - to do: + include improved thermodynamics
143              + check whether kSurfC (from model/inc/SURFACE.h) can be used
144                instead of new field kTopC
145              + can we use topoFile, Ro_surf and existing code in ini_depth.F
146                instead of new field R_shelfIce and new code in ini_depth.F
147                and ini_mask_etc.F?
148              + adjust vertical mixing schemes?
149    o seaice pkg:
150     - add a cpp-flag to include a simple formula for a salinity dependent
151       freezing point of sea water at the surface
152     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
153       meridional stresses are now different (and hopefully correct)
154    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
155       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
156       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
157    o pkg/diagnostics: add options and parameters for regional-statistics
158       diagnostics ; define regions by reading a region-mask from a file
159       (might add other options later)
160    o pkg/bulk_force:
161     - add option and parameters to use AIM surface-flux formulae.
162     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
163       others forcing fields (defined in PARM05, parameter file "data") are loaded
164       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
165     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
166     - use the right EXCH call for uwind,vwind (to work on CS-grid).
167     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
168       and parameters (note: calcWindStress replaces .NOT.readwindstress).
169     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
170    
171    checkpoint58
172    o add "--embed-source" option to genmake2 which, when the supporting
173      tools can be compiled (as determined by genmake2) will turn on the
174      embed_files package which then embeds the entire MITgcm source code
175      (*.[fFhc] + Makefile) used for the build within the executable
176      - requested by CNH but off by default
177      - adds a paltry <9MB to the mitgcmuv executable in most cases
178      - only writes the output when useEMBEDSRC in eedata is true
179    o clean up 3-dim. relaxation codes:
180      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
181      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
182      * Thanks to Tom Haine for testing!
183    
184    checkpoint57z_post
185    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
186      affects output (@ truncation level) of exp. plume_on_slope ; updated.
187    o fix the pickup behavior for obcs in combination with ptracers
188    o fix a bug in ptracers_external_fields_load
189    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
190      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
191    o transfered surface NH pressure to eta field (if exactConserv).
192    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
193         and update lab_sea output.txt file.
194    o completing 3-dim. relaxation code: additional term
195         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
196      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
197      * At compile time, in "EXF_OPTIONS.h" set
198          #define  ALLOW_CLIMTEMP_RELAXATION
199          #define  ALLOW_CLIMSALT_RELAXATION
200      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
201          tauThetaClimRelax3Dim = 15552000.0,
202          tauSaltClimRelax3Dim  = 15552000.0,
203      * 3 cases:
204          1) Use a constant-in-time 3-dim. field
205          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
206          3) Real-time relax. to time-evolving prescribed field
207    o Adding Laplacian-type smoothness constraint on
208      initial and boundary (forcing) controls (ic, bc)
209      * enable at compile-time via
210        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
211      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
212      * Absolute scale somewhat unclear so far
213      * no area weighting was included since no other cost term does so far
214    
215    checkpoint57y_post
216    First step for a NLFS adjoint
217    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
218    o new init. routines for calc_r_star, calc_surf_dr
219    o still need to deal with ini_masks_etc
220    o testreport seemed happy
221    checkpoint57y_pre
222    
223    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
224    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
225    o add new offset feature to offline pkg (plus minor cleanup)
226    o cfc fixes for final year of integration
227    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
228      be in GCHEM_OPTIONS).
229    
230    checkpoint57x_post
231    o fix testreport Pb in multiple test experiment.
232    o cleanup our namelist syntax in verification:
233      - make it more F95 standards compliant (some work still needed)
234      - allows the vast majority of our tests to work with gfortran
235    o Non-Hydrostatic:
236     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
237     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
238    o Allow to apply AB on T,S rather than on AB(gT,gS):
239     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
240     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
241       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
242     - need a "clever" read_pickup to restart from the other AB formulation
243    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
244    o remove some unused variables (reduces number of compiler warnings)
245    o adjoint
246      * Disable useVariableViscosity for adjoint for time being
247        (there are a number of extensive recomputations)
248      * Initialize certain variables needed for adjoint
249    
250    checkpoint57w_post
251    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
252                 fix the singleCpuIO RS version of MDSWRITEFIELD
253       and add a WARNING if using globalFiles=T with multi-processors.
254    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
255      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
256    o tracer advection scheme:
257      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
258       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
259       was not very convenient).
260      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
261       (further tests needed for the implicit DST & Flux-Limiter schemes).
262    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
263      and sRef for convenience, handy, when you want to initialize
264      ptracers in a large domain with a constant non-zero value. Also,
265      untangle ptracers_init.F a little.
266    
267    checkpoint57v_post
268    o change dome exp. to use variable viscosity in side-drag terms.
269    o remove all the files from the cfc_offline test since they are now
270      incorporated into tutorial_cfc_offline which has been producing
271      identical results for a few days of testing
272    o add new parameter: sideDragFactor to enable half-slip-side BC
273      and change side-drag S/R to use viscosity from mom_calc_visc
274      (can switch back by setting sideDragFactor=0.); affects results at
275      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
276       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
277    o vorticity & strain are now computed without masking, to account for
278      no-slip-side BC in variable viscosity calculation ; mask is applied
279      anyway later on, before computing advection/coriolis terms.
280    o modify exp4 to test new obcs support for reading from external files
281      and for passive tracers
282    o fix behavior of ptracers_monitor when monitor output is written to a
283      netcdf-file; still not independent of monitor.F (writes in the same
284      file).
285    o change default value of tRef (put a uniform, meaningful value for ocean
286      & atmos) and initialize sRef (was missing, as Martin mentioned).
287    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
288      to be proportional to enstrophy dissipation length.  Thus,
289       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
290      This is now consistent with Smagorinsky and with the manual.
291    
292    checkpoint57u_post
293    o OBCS and PTRACERS: add open boundary support for passive tracers
294      - either use homogenous (pseudo) v.Neumann conditions or prescribe
295        OB-values from file; this is not different from the way theta and salinity
296        are treated
297      - however, Orlanski-radiation conditions are not supported, and the model
298        will stop if you use pTracers and Orlanski at the same time.
299      - beefed up the rountine obcs_external_fields_load: now only those open
300        boundary values are overwritten with values from files for which there
301        are really files, otherwise the OB-fields remain untouched. This makes
302        it possible to use different OBs at different ends of the domain (as
303        with EXF)
304    o reduce number of exch calls in shap_filt (s2).
305    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
306      truncation level) 4/5 MLAdjust test results (11&12 digits match).
307    
308    checkpoint57t_post
309    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
310    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
311      same truncation, independent of the face number: affects affects several
312      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
313    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
314      note that biharmonic viscosity + no-slip was not tested in any experiment.
315    o fix bug in non-linear free-surf side-drag ; generate new output for
316      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
317    o make mnc honor the writeBinaryPrec flag for most kinds of output
318    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
319    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
320      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
321    o add brackets in multi-terms sum to get same truncation, independent of
322      the face number (manage to get exactly same value of gU,gV at the cs-edge)
323      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
324    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
325      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
326      a maximum grid-scale Reynolds number.  Also, changes all length calculations
327      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
328      Suggested values of viscosity parameters found in mom_calc_visc.
329      Many new viscosity diagnostics available.
330    
331    checkpoint57s_post
332    o Add clearing-house for viscosity calculations, mom_calc_visc and
333      correct numerous bugs in LeithD and Smagorinsky discretizations.  
334      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
335      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
336      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
337      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
338      The Strain-Tension form is now called with useStrainTensonVisc=.true.
339      ViscAhStrain and viscAhTension are now retired.
340    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
341    o In response to JMC's bug report, genmake2 now ignores any soft-links
342      that it finds in the *current* directory when searching for files.
343      Soft-links found in any other source directories will still work as
344      they did before.
345    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
346      a C routine to unlimit the stack size
347    o mnc-ify pkg/aim snapshot vars
348    o mnc-ify pkg/land as requested by Daniel
349    o various changes to mnc including:
350      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
351      - output can now be grouped so that all files within a group
352          change the ITER portion of their names in lock-step together
353      - can now read ("global") PER-FACE (in addition to PER-TILE) files
354          and works with both EXCH1 and EXCH2 (but needs more testing)
355      - writing works for all verification test cases w/ g77 on Linux
356    
357    checkpoint57r_post
358    o make MNC variable initialization happen earlier
359    o add diagnostics for (almost) each term of the momentum Eq.
360    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
361    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
362    o remove MINIMAL_TAVE_OUTPUT option ;
363      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
364    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
365      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
366    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
367    o add time-dependent SST, SSS control
368    o cost terms in ecco/ modularized (new cost_generic.F)
369    o cost_averages routines are modularized (new cost_averagesgeneric.F)
370    o new infrastructure for seaice model vs. obs misfits in seaice/
371      * driver from the_main_loop.F is seaice_cost_driver.F
372      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
373      * gradient check in Exp. 6a of natl_box_adjoint/
374    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
375      (see README file)
376    
377    checkpoint57q_post
378    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
379    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
380      - bug was reported by Jean-Michel and Ian Fenty
381    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
382      update exp. cpl_aim+ocn output.
383    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
384      Needed for high-res. runs with large global files
385      to be able to limit tapelev size
386    o Changed some tests for adjoint:
387      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
388      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
389      * global_ocean.90x40x15/ back to default 3-level checkpointing
390    o Modifications to enable scripted COMMON to MODULE conversion
391      * verification/OpenAD/code/ has necessary scripts and description;
392      * converts, compiles and runs successfully;
393    
394    checkpoint57p_post
395    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
396    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
397      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
398    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
399    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
400      (was already the case for dissipation with mom_vecinv,
401       and also the case for grad.PhiHyd when staggered-timeStep)
402      This will allow to put dissipation out-off the AB time-stepping.
403     Unfortunately, affects truncation error. Update output of exp. that "fails"
404      (cg2d matching number) and leave the others for later: front_relax(10),
405      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
406      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
407    
408    checkpoint57o_post
409    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
410      (2) its ready to be documented during the 20050801 DocFest
411    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
412      for ideal_2D_oce and lab_sea on linux_ia32_g77
413    o set to #undef CTRL_SET_OLD_MAXCVARS_30
414      in global1x1_tot/code_seaice_adj to access indices 32, 33
415      (worth another tag)
416    
417    checkpoint57n_post
418    o adding precip control xx_precip 32
419    o adding swflux control xx_swflux 33
420    o Replacing 10 forcing penalty cost routines by 1 generic.
421    o Implementing partitioning in time-mean and variable adjustment
422      for atmos. state.
423    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
424    o in natl_box_adjoint:
425      * updated exp 1 to 10
426        (but does not have time-mean vs. variable split results yet)
427    o updated global1x1/*_seaice_adj/
428      to incorporate latest changes
429    o enable useSingleCpuIO for mdsio vector routines
430      (applies in particular to tapelev I/O)
431    o removed inefficient K-loop in all active_file*control*.F
432    
433    checkpoint57m_post
434    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
435      and advect_cs (use EXCH-2 and standard cs-32 grid files).
436    o pkg/exch2: filling of face-corner halo regions is optional
437      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
438    
439    checkpoint57l_post
440     tag before updating tutorials (pre-release-2)
441    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
442       for output and interpolation of input fields onto model grid)
443    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
444       Affects results of exp. rotating_tank ; update output.txt.
445    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
446          and taking the square quantity and/or using a fraction-weight field.
447    o fix aim_diagnostics_init.F mate numbers.
448    o add mnc output capability to diagnostics/diagstat and update
449      our cvsignore files for the ACSII output generated
450    
451    checkpoint57k_post
452    o lab_sea now uses diagnostics package and provides a suite of
453      new EXF diagnostics output.
454    
455    checkpoint57j_post
456    o exf
457      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
458        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
459        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
460      * extended diagnostics output
461        - now includes all EXF variables
462        - hs, hl moved to common block
463        - separate S/R for diagnostics, called after ctrl vector is added
464        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
465        - EXFqnet contains true Qnet (i.e. includes qsw)
466      * updated verif. lab_sea, global_with_exf
467      * Rearranging hflux (exf_mapfields -> exf_getforcing)
468        to ensure that diagnostics sees a true EXFqnet
469    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
470    o diagnostics pkg: change pointers so that 1 diagnostic can be used
471      several times with different frequencies.
472    o mnc-ify the thsice package as requested by Daniel Enderton
473      - the monitor--MNC output needs work
474      - many attributes need to be added (most are currently blank)
475    o mnc-ify theaim_v23 package as requested by Daniel Enderton
476      - many attributes need to be added (most are currently blank)
477    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
478    o add Sadourny like discretization to the 4th.O vorticity advection scheme
479    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
480      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
481         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
482    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
483     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
484    
485    checkpoint57i_post
486    o Diagnostics package was changed: diagnostic allocation is now deactivated
487      by setting an empty file name in the namelist (used to be by setting 0 frequency)
488    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
489      add 1rst Order upwind vertical Shear.
490    o add a quick fix for A/B checkpointing in OFFLINE mode
491    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
492      end-run around the C/Fortran linking horror in eesup/src/timers.F
493    o added pkg/runclock: allows user to terminate run based on wall clock
494    o added non-hydrostatic scaling parameter: nh_am2
495    o pkg/my82: futile attempt to make results compiler-independent by adding
496      some "_d 0", etc. no effect.
497    o for mnc output, fill the 'T' coordinate var with myTime and create a
498      separate 'iter' variable for iteration count
499    o pkg/diagnostics:
500      add new capability: output of Global/Regional & per-level statistics ;
501      tested against monitor output (including land & thSIce) on various exp.
502    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
503    
504    checkpoint57h_done
505      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
506      data.diagnostics, data.gchem, data.ptracers) is done.
507    
508    o pkg/diagnostics: prepare for Global/Regional statistics.
509      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
510    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
511      and rename it: DIFFERENT_MULTIPLE
512    
513    checkpoint57h_post
514    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
515    o pkg/diagnostics: change output frequency, now in seconds (instead
516      of Nb of iterations). This requires to change data.diagnostics.
517    checkpoint57h_pre
518    
519    o in mnc, let the user create the output dir if both mnc_outdir_date
520      and mnc_outdir_num are false
521    o add fflags() to pkg/diagnostics which allows one to specify, on a
522      per-file basis, the file precision [default behavior is unchanged]
523    o added diagnostics to pkg/kpp, including computation of mixed layer
524      depth based on a temperature/density criterion
525    o updated verification/natl_box to test the new pkg/kpp diagnostics
526    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
527    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
528    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
529      not mnc -- this mistake was found by JMC and is now corrected
530    
531    checkpoint57g_post
532    o add Adams-Bashforth 3rd Order time stepping:
533      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
534      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
535    checkpoint57g_pre
536    
537    o make lambda[Theta,Salt]ClimRelax spatially varying
538      (default remains spatially uniform constant based on tau)
539    o added new control variables
540      * init. uVel, vVel, etanN
541      * lambda[Theta,Salt]ClimRelax
542    o separate masks used for ctrl_pack/unpack 'from write_grid' output
543      (suggested by G. Forget)
544    
545    checkpoint57f_post
546    o add parameter "baseTime" = model base time = time at iteration zero
547      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
548      account for baseTime shift
549    o move Coriolis arrays from PARAMS.h to GRID.h
550    checkpoint57f_pre
551    
552    o mnc-ifying the seaice package
553    o introduced an alternative length scale calculation for use in the limiting
554      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
555    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
556    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
557      as well as grad(vort3).  Made it compatible with both approximate form
558      for the cubed sphere and full form of these gradients.  Added flag
559      useFullLeith to select between approximate and full form.  
560    o add "d0" in getcon.F to reduce differences between compilers/platforms
561      update output.txt of exp. fizhi-gridalt-hs
562    o change port_rand funtion to allow to set the seed.
563    o fix obscure MNC bug involving conversion between reals and integers
564      - it caused no problems with certain (eg. gcc, ifc) compilers but the
565        new version is now more standards-compliant
566    o adjoint-related modifications
567      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
568      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
569      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
570    
571    checkpoint57e_post
572    o Adding eddy stress controls a la Ferreira et al.
573    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
574    
575    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
576      update output.txt of exp. fizhi-gridalt-hs
577    o add more "Z" dimensions and associated coordinate vars to MNC
578    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
579    o parameter calendarDumps: when set, approximate months (30-31 days) and years
580      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
581      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
582      months and years.  Requires pkg/cal.
583    o diagnostics: add pickup functionality
584      - off by default for backwards compatibility
585      - current version only uses MDSIO -- MNC will be added
586    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
587    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
588    
589    checkpoint57d_post
590    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
591    o modify verification/ideal_2D_oce so that it tests the creation of mnc
592      output from the diagnostics package
593    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
594    o make genmake2 more portable by using ".$FS" instead of ".f" for more
595      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
596    o add coordinate variables to the MNC output from the diagnostics package
597    o change MNC-flags default value: true when useMNC=TRUE
598    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
599      the ability (off by default) to read the grid information using MNC
600    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
601    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
602    o do snap-shot diagnostics at the middle of the time-interval (instead of
603      at the end).
604    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
605      new test for AIM with thSIce + slab-ocean
606    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
607    o move state variable diagnostics to the beginning of the time step ;
608      (note: still needs some work specially for snap-shot diagnostics)
609      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
610    
611    checkpoint57c_post
612    o Change testing option (-ieee) to get closer agreement between g77 & ifort
613    o generate new output.txt files on faulks with g77 & the new -ieee option
614    checkpoint57c_pre
615    
616    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
617      update output.txt of exp. global_ocean.90x40x15
618    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
619      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
620    o add saltFlux(+File) forcing capability with periodicExternalForcing
621    o allow to use pkg diagnostics for GM-Redi & ThSIce output
622    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
623    o improvements for the MNC output from DIAGNOSTICS:
624      - correct handling of the unlimitied dimension
625      - all dims now have associated coordinate variables
626      - variables located at U, V, and Corner ("Z") points are now written
627        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
628        *all* data points are output
629    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
630    o added pkg/seaice/seaice_monitor.F
631    o mdsio_readfield.F can now read files visible only to master MPI process.
632    o pkg/seaice: some test code for ice-modified ocean stress
633    o exf_getffields interpolation defaults to bilinear for all scalar forcing
634      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
635      spurious negative numbers for precipitation and humidity.  Will cause
636      some small numerical differences for integrations using pkg/exf/exf_interp.F.
637    o pkg/ctrl/
638      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
639        May be enabled via doPackDiag
640      *  introduce z-scaling of
641         + gradient (doZscalePack) and
642         + control (doZscaleUnpack)
643    o pkg/mdsio/
644      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
645      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
646    
647    checkpoint57b_post
648    o simplify options in diagnostics_fill arguments (remove weird combinations)
649    o fix MNC coordinate variables so that they now contain per-face index
650      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
651      general, EXCH2 grids are only aligned to a "local" coordinate system
652    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
653    o Implement instantaneous output within pkg diagnostics:
654      setting a negative frequency in data.diagnostics produces
655     "snap-shot" output (as opposed to time-average if freq > 0)
656    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
657      NOTE: change ptracer diagnostics name: use 2 characters to work with
658            more than 9 tracers. Add also diagnostics of advect & diffus flux.
659    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
660      becomes the coordinate variable for the 'T' dimension
661    o add CF-style coordinate variables to MNC
662      - just a first cut:  numbers are meaningless on the cubesphere and
663        missing along the T axis but otherwise it works!
664    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
665    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
666    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
667      this is based directly on what the model compute, so that the content of
668      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
669    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
670    o clean up build options files for SunOS, in particular
671      - remove -traditional from xmakedepend
672      - change -xarch=v9 to -xarch=native for f77
673      - restore use of make (not gmake)
674      - add CC=gcc if using g77
675    o changes per discussion of AM, JMC, & EH3 today:
676      - move redundant "grid" variables out of "state" -- in preparation of
677        creating proper CF-style coordinate variables and in recognition
678        that any/all grid variables can be easily copied (eg. w/NCO) from
679        the grid files into any of the other NetCDF files
680      - *always* output grid variables with MDSIO (this will eventually be
681        changed)
682      - output MNC grid file if useMNC is true
683    o every instance of _END_MASTER() has been found and replaced with
684      _END_MASTER( myThid ) in order to satisfy certain picky Sun
685      preprocessors
686    o re-arrange diagnostics pkg initialisation:
687     - allow each package to extend the available diagnostics list
688     - add some checking and fix small problems (multi-threaded, ...)
689     - new S/R diagnostics_fill (replace fill_diagnostics):
690       look through the short list of active diag. (instead of the long list)
691       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
692    
693    checkpoint57a_post
694    o this set of changes restores TAMC compatibility
695      tested for global_ocean.90x40x15 adjoint on trough
696      (what a pain)
697    
698    checkpoint57a_pre
699    o some modifs in tools/build_options for sunos
700    o call ctrl_pack for ctrl at end for optimcycle=0
701    
702    checkpoint57
703    o add horizontal bi-harmonic viscosity for vertical velocity
704      - new parameter viscA4W (defaults to viscA4)
705      - affects only non-hydrostatic code
706      - to be done: no-slip lateral boundary conditions
707    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
708    o implement Implicit Vertical advection for pTracers
709    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
710      (implemented also for implicit vertical diffusion & advection)
711    o OBCS: extend application of tracer open boundary conditions
712      to a strip beyond the boundary of width Olx/Oly
713    o add call monitor to TAF set of required calls (flow directives)
714      and include in natl_box_adjoint
715    o untangle a few ifdefs related to cost, ctrl, autodiff
716      untangel a few ALLOW_ECCO_OPTIMIZATION
717    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
718      (theta2, salt2 in ecco_cost_weights)
719    
720    checkpoint56c_post
721    o OBCS as control variables
722      - update ctrl_ad_diff.list, obcs_ad_diff.list
723      - remove balance of obcs controls from default
724      - fix index bug nobcs in ctrl_init
725      - fix dummy fields filen in ctrl_pack
726      - add dummy weights for obcs
727    o lsopt: comment out fort.94 output
728    o optim:
729      - remove unnecessary header files
730      - adjusted namelists
731      - add xerbla.F to Makefile
732    o exf:
733      - multiple modifications of exf_check_range
734      - unit change in exf_init_runoff from [m/year] to [m/s]
735    o mdsio:
736      - i/o-vector change debugLevel from debLevA to debLevB
737    
738    checkpoint56b_post
739    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
740      is called from DO_THE_MODEL_IO
741      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
742      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
743      - clean up PTRACERS_WRITE_TIMEAVE a little
744    o add another verification experiment that tests both the cfc-pkg and
745      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
746      reactive tendencies treated inline with regular timestepping
747    o testreport previously did a lousy job of comparing small numbers, so
748      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
749      implemented in the little c-progam tmp_cmpnum.c which is embedded in
750      testreport.
751    o ptracers_monitor: bug fix for MPI
752    
753    checkpoint56a_post
754    o GCHEM: finish reorganizating the package
755      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
756        (introduces another 3D-array for each passive tracer, but only if
757        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
758        gchemTendency is not needed because the timestep is done separately)
759      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
760      - GCHEM is now---more or less cleanly---separate from PTRACERS
761      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
762        so clear to me how that should be done in a general way.
763    o CFC: improve formatting of output in CFC_ATMOS
764    o PTRACERS:
765      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
766        that ALL experiments with ptracers enable can be checked. This makes
767        GCHEM_MONITOR obsolete.
768      - include a runtime parameter PTRACERS_monitorFreq that defaults to
769        monitorFreq
770      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
771    o add PTRACERS (PTR0[1-5]) to testreport output
772    o exf_check_range:
773      * default changed to .TRUE.
774      * will check values for niter0 if debLevA, every timestep if debLevB
775      * STOP in exf_check_range if 'out of range'
776      * range chosen generous to allow for potential extema
777      TBD: a version with stricter range
778           permitted range would be runtime parameters
779    o GMredi:
780      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
781      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
782      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
783    o GCHEM:
784      - move call to GCHEM_FORCING_SEP, so that it is now called before
785        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
786      - introduced a useGCHEM runtime flag and applied it everywhere.
787      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
788        this flag is now only visible within GCHEM-pkg routines.
789      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
790        be replaced by a 3D array that is computed before thermodynamics; for
791        this, the tracer ID iTracer had to be included into the parameter list
792        of ptracers_forcing
793      - set up forward_step to call gchem_forcing, that will replace
794        gchem_forcing_int in ptracers_forcing
795      - cleaning up
796    o small cleaning of exch2: remove files that are also in eesupp/src
797    
798    checkpoint56
799    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
800    o mnc: cleanup "full" files--fixes out-of-memory problem
801    o ECCO-GODAE
802      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
803      * fully merged and updated from SIO code
804        windstress sign change affects
805        - exf_inscal_[u/v]stress
806        - sign of xx_tau[u/v] adjustments
807        - signs in cost_scat
808      * ctrl_get_gen: avoid update of tau[u/v] for first few days
809      * natl_box_adjoint updated and compressed
810      * 2-level checkpoint switch added
811        (tested in EXP. 1 of natl_box_adjoint)
812      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
813    o SVD
814      * first complete, non-hacked version for SVD calculations
815      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
816        performed via direct access files admtlm_vector.it????
817        (via ctrl_[un]pack)
818      * optimcycle is used for ARPACK iteration counter
819        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
820      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
821        and add linear transforms where necessary
822      * controls are initial/final SST, SSS (can be extended; need to check
823        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
824    o mdsio: filename info to both stderr, stdout
825    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
826      from sign change
827    
828    checkpoint55j_post
829    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
830      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
831    o add consistent build directories and .cvsignore files to verification
832    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
833    o make all subroutines 30 or less characters in length for certain older
834      compilers to work (a thorough search only turns up two routines in
835      pkg/ptracers)
836    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
837      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
838    
839    checkpoint55i_post
840    o change arrays for total vertical diffusivity (2.D if explicit,
841      3.D if implicit) ; each ptracer uses its own background value.
842    o added mnc/NetCDF output capability to ocn_compon_interf
843      - added bits to verification/cpl_aim+ocn so that it can run on
844        ITRDA and other clusters without the mpirun "-wd" option
845    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
846      configuration
847    o give MNC the ability to create additional files rather than
848      exceeding a specified file size limit "MNC_MAX_FILESIZE"
849      - the default is just less than 2GB which is a practical limit
850        on many systems
851    o Compute the non-local term using either KPP vertical diffusivity (=default)
852       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
853    
854    checkpoint55h_post
855    o add verification test "vermix"
856    o remove all the *_ioinc flags and replace with the single global
857      outputTypesInclusive flag
858    o allow to set a vertical profile of vertical diffusivity for T & S
859    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
860    o useMNC moved from data.mnc to data.pkg
861    
862    checkpoint55g_post
863    o Renaming carbon AD experiments to comply with testreport conventions
864    o Updating adjoint of Held-Suarez hs94.1x64x5
865    o Fixing directives for non-ECCO forward_step, after ECCO directives
866      have been fixed to avoid recomp. of do_oceanic_phys
867      Works well for global_ocean.90x40x15,
868      but recomp. issue remains for carbon
869    o Updating adjoint output for natl_box_adjoint after
870      pkg/ecco has been modified (see taga c55d_post)
871    
872    checkpoint55f_post
873    o rename to timeave_init_fixed
874    
875    checkpoint55e_post
876    o some delicate re-shuffle of store directives to avoid one
877      extra call of do_oceanic_physics
878      affects ecco_the_main_loop.F, do_oceanic_physics.F
879      checkpoint_lev1_directives.h
880    o NB: this may break global_ocean adjoint temporarily,
881      but it is clear how to fix it. Will do later, need this now.
882    
883    checkpoint55d_post
884    o ECCO specific cost function terms (up-to-date with 1x1 runs)
885    o ecco_cost_weights is modified to 1x1 runs
886    o modifs to allow observations to be read in as
887      single file or yearly files
888    o enable to read exf forcing fields as either
889      single file or yearly files (flag useExfYearlyFields)
890    checkpoint55d_pre
891    
892    o switch between 2-level and 3-level checkpointing
893    o add ability of MNC to write local and "partial" (eg. 2D slices where
894      the full 3D field is never actually stored) arrays to NetCDF files
895      with the correct (that is, the complete multi-dimensional) set of
896      array indicies
897      - used in mom_vecinv() to write the diagFreq output
898      - tested (demonstrated) in verification/aim.5l_cs
899    o further mnc-ification
900      - add verification/lab_sea to the list with mnc setups
901      - fix undefined mnc v-names in cd_code
902      - add kpp to mnc output (both snapshot and timeave)
903    o non-hydrostatic code
904      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
905        in calc_gw.F
906      - defaults to viscAh
907      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
908        friction or Leith) in non-hydrostatic mode, as long as there is
909        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
910    o pkg/cost
911      extend simple cost functions to treat time mean quantities
912      (T,U,V) via cost_accumulate_state from cost_tile
913    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
914        be 2 times larger than the minimum size the advection scheme requires.
915        now get a perfect conservation of salt in advect_cs test-exp (updated)
916    o GGL90 (Gaspar's TKE mixed layer)
917      - add horizontal diffusion of TKE, requires exchanges in
918        do_fields_blocking_exchanges, horizontal diffusivity is zero by
919        default. In OPA there is no horizontal diffusion of TKE but the
920        mixing coefficients are computed from a horizontal average of TKE of
921        6 points or so. I think that diffusion has a little more physical
922        justification.
923      - clean up ggl90_calc in the hope of reducing memory usage (this hope
924        was in vain)
925      - mask tke-variable in ggl90_init
926    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
927    o fix biharmonic diffusion on CS-grid.
928    o more obcs stuff
929      - added obcs_external_fields_load as an alternative to the EXF-pkg option
930        for reading boundary values. This routine is called from
931        obcs_prescribe_read
932      - updated obcs_check
933      - changed sponge layer relaxation parameter units for days to seconds
934      - turned off sponge layer by default
935      - changed argument list of OBCS_CALC to myTime+deltaTclock
936      - fixed about 35 bugs in obcs_external_fields_load
937    
938    checkpoint55c_post
939    o obcs stuff
940      - new runtime flags useOBCSprescribe, useOBCSbalance
941      - re-arranged obcs_calc
942      - moved exf_getobcs to obcs_prescibe_read
943        obcs_prescibe_read is called after ORLANSKI stuff
944        and independent of it (executable can contain all).
945      - updated obcs_check
946      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
947        These may be necessary only if tangential velocities are
948        prescribed at OB, not sure, needs testing.
949    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
950      which simplifies the calls and passes the ifc check-bounds test
951    
952    checkpoint55b_post
953    o add a 2D scalar, Z location, exchange_2 routine.
954    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
955      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
956      affects advect_cs results (for the wrong reason): update output.txt
957    o use a more standard discretization for biharmonic viscosity ;
958     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
959      affects results of dome set-up: update output.txt
960    o fix gad_advection.F (CubedSphere part), back to version 1.23
961    o fix bug in mom_vi_del2uv.F (CubedSphere part).
962    
963    checkpoint55a_post
964    o merged code to
965      * prescribe/read time-dependent open boundaries
966        (works in conjunction with exf, cal)
967      * sponge layer code for open boundaries
968      * each boundary N/S/E/W now has its own CPP option
969        (healthy for the adjoint)
970    
971    checkpoint55
972    o up-to-date adjoint of previous breaks
973      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
974      - global_ocean_ebm: adjoint still needs fix (TLM ok)
975      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
976      - carbon: * remove tr1-related adjoint verification
977                * add ptracer as control variable
978    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
979      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
980    
981    checkpoint54f_post
982    o in verification/carbin/ remove experiment related to
983      ALLOW_PASSIVE_TRACER (array tr1 etc)
984      code_ad/ input_ad/ results_ad
985    
986    o add two new packages
987      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
988        + subject to optimization (memory)
989      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
990        + subject to reordering (many GOTOs in the original code)
991        + so far opps is called for every (i,j) point, and then operates in
992          the vertical; one may want to reorder the scheme in order operate in
993          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
994          fields)
995    o overhaul of IO so that we now have flags for MDSIO and/or MNC
996      - all verification tests compile and run with linux_ia32_g77
997      - defaults are compatible with current input files--nothing
998        should change if you were not previously using MNC
999      - MNC output has been added in numerous places (eg. timeave)
1000        but there are still a few writes not yet do-able with MNC
1001        (this is in progress)
1002      - flags now allow for either/or/both use of MDSIO and MNC and
1003        documentation will soon follow
1004      - numerous small formatting cleanups for ProTeX
1005    o add version info (via BUILD_INFO.h) to MNC and stdout
1006    
1007    checkpoint54e_post
1008    o add two new packages
1009      - pp81 (Packanowski and Philander, 1981), Richardson number and
1010        stratification dependent mixing
1011      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1012      - these scheme operate in a similar manner as KPP (without ghat, of
1013        course), however there is only one diffusivity that is used for both
1014        temperature and salinity (and passive tracers)ç
1015    o add offline package
1016    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1017      provided by Stephanie Dutkiewicz
1018    o genmake2: add ability to search for C compilers and cleanup test output
1019      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1020    
1021    checkpoint54d_post
1022    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1023    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1024      leading to additional shift by 5 days each year of integration
1025       (i.e. leading to considerable offset over the years)
1026    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1027    o start with no AB and no initial filtering (staggerTimeStep):
1028      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1029    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1030      (external loading & cpl import/export stay in forward_step.F)
1031    o update coupling interface to work with new staggerTimeStep
1032    o change MDSIO ptracers_pickup.
1033    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1034    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1035    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1036    
1037    checkpoint54c_post
1038    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1039      this affects (truncation error) output.txt of test-exp:
1040       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1041    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1042    o change Qnet to always be the net heat flux, (+upward).
1043      affects (truncation error) output of natl_box exp.: updated
1044    o define the max number of passive tracers in PTRACERS_SIZE.h
1045    o start to test mnc routinely in exp0
1046    o add sea-ice loading (sIceLoad) as a new forcing field.
1047    
1048    checkpoint54b_post
1049    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1050       impressive on Altix and Opteron systems)
1051    o diagnostics can now write NetCDF files through the mnc package
1052    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1053    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1054    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1055      affects (truncation error) output of lab_sea & natl_box exp.: updated
1056    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1057    
1058    checkpoint54a_post
1059    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1060    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1061    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1062    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1063      + internal_wave (shift in writing cg2d_ini_res)
1064    checkpoint54a_pre
1065    
1066    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1067      - modified verification/lab_sea and natl_box_adjoint accordingly
1068    
1069    checkpoint54
1070    checkpoint53g_post
1071    o prepare splitting of thermodynamics: store convect.counter in common block
1072    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1073      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1074    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1075    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1076    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1077    o restore adjointability
1078    
1079    checkpoint53f_post
1080    o modifications that affect AIM experiment results (update output.txt):
1081      - no advection of S at top interface Nr (pkg/generic_advdiff)
1082      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1083    o AIM pkg:
1084      - include stability function into surf.Flux derivative relative to Tsurf
1085      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1086    
1087    checkpoint53e_post
1088    o merged cylindrical coord configuration
1089    o added rotating_tank experiment
1090    checkpoint53e_pre
1091    
1092    checkpoint53d_post
1093    o faulks upgraded: re-generate output.txt that have changed:
1094       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1095    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1096    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1097    o added Sadourny discretization of Coriolis
1098      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1099      - re-enabled use of omega3 (useAbsVorticity)
1100    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1101      vector-invariant equations
1102      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1103    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1104      hopefully without new bugs
1105      - still to do: biharmonic friction for non-hydrostatic w
1106    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1107    o regenerated output for global_ocean_ebm (using -ieee)
1108    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1109      of mom_common/
1110      - simple re-arrangement of instructions within computing loop
1111    checkpoint53d_pre
1112    
1113    checkpoint53c_post
1114    o new version of coupler for AIM+thSIce and Ocean models
1115     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1116     - land: change Evaporation of snow
1117     - aim with thSIce: fix bug in snow-precip.
1118    o changes to calc_gw.F
1119     - bug fix for w^2 term near the bottom boundary
1120     - (hopefully) improve the lateral slip boundary condtions for use with
1121        partial/looped cells
1122      - because the bug fix changes two verification experiments anyway (exp5
1123        and plume on slope), change the lateral boundary condition from half slip
1124        to the value of no_slip_sides
1125    o ebm package wasnt quite up to the parallel task. Fixed that.
1126    o Adjoint of EBM package + verification
1127      * TLM OK
1128      * ADM not sufficient accuracy yet (needs further testing)
1129    
1130    checkpoint53b_post
1131    o Commiting new energy balance model to repository
1132      * package is pkg/ebm
1133      * verif. is verification/global_ocean_ebm
1134      * references are in ebm_driver.F
1135    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1136    C        Global thermohaline circulation. Part I:
1137    C        Sensitivity to atmospheric moisture transport.
1138    C        J. Climate 12(1), 71-82
1139    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1140    C        Global thermohaline circulation. Part II:
1141    C        Sensitivity with interactive transport.
1142    C        J. Climate 12(1), 83-91
1143    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1144    C        Destabilization of the thermohaline circulation
1145    C        by atmospheric eddy transports.
1146    C        J. Climate 7(12), 1870-1882
1147    o Will need long integration testing.
1148    checkpoint53b_pre
1149    
1150    o created pkg/mom_common in preparation for variable viscosity code
1151    o renamed and split ini_mnc_io
1152    o pkg/land: only liquid water can diffuse or run-off
1153    o AIM using land: soil wetness availability account for snow
1154    o added printMapIncludesZeros to EEPARMS namelist
1155    
1156    checkpoint53a_post
1157    o restore TAMC compatiility for exf_constants.h
1158      (no usage of _d in .h)
1159    o Additional storing in KPP in an attempt to fix
1160      TAMC problem with adjoint of KPP code.
1161      (no success...)
1162      Identical code works fine with TAF.
1163    o Fixed verification/natl_box_adjoint experiments.
1164      Initial conditions for Experiments 4 and 5 are now
1165      set to "SEAICE_initialHEFF=0", which is more reasonable,
1166      and hence gives results closer to that of Experiment 2.
1167      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1168    
1169    checkpoint53
1170    o stable checkpoint with up to date adjoint
1171      TLM tests only run for 1st grdchk at the moment. Its unclear if
1172      this is a code problem or a problem with resetting code for g_
1173      variables that is being autogenerated wrong.
1174      Otherwise:
1175       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1176       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1177         are both still in chaos following their security messes.
1178    
1179    checkpoint52n_post
1180    o various build (mostly genmake2) changes including:
1181      - ability to build/run more easily within Cygwin and MacOS X
1182      - more complicated Makefiles with a stronger dependence on Gnu Make
1183    o pkg/seaice modifications
1184      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1185        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1186        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1187      - changed proxy for geostrophic velocity and updated
1188        verification/lab_sea/results/* accordingly
1189      - removed ADI dynamic solver from pkg/seaice
1190      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1191        they caused a segmentation fault under certain circumstances
1192      - removed unused field WATR
1193    o bug fix in exf-package:
1194      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1195         now reflect that.
1196    o small fixes in the cal-package:
1197      - set reference date to first of January for the 'model'-calendar
1198      - failing of cal_CheckDate in cal_FullDate now actually results in a
1199        warning
1200    o small modifications in exf-package to increase flexibility:
1201      - change climtempfreeze from a constant to a runtime parameter that
1202        is specified in data.exf_clim (default = -1.9)
1203      - introduce runtime parameter windstressmax (default = 2.0) that is
1204        specified in data.exf
1205    o fix in pkg/thsice:
1206      - update Evap (Tsf changes) to be consistent with Latent heat flux
1207      - maintain snow precipitation unchanged (even if Tsf >=0).
1208     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1209    
1210    checkpoint52m_post
1211    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1212      this does not change any of the results, because myIter=0 in swfrac always
1213      lead to jwtype=2 (the default anyway), but the call makes little sense
1214      as a default
1215    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1216    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1217      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1218    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1219    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1220    o extending useSingleCpuIO option to work with new exch2 I/O format
1221      - old-style, missing-tile I/O is still accessible by defining CPP
1222        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1223    o monitor package can write to NetCDF files and/or STDOUT
1224    o fix re-definition bug in MNC_GRID_INIT_ALL()
1225    o doc/api_reference added
1226      - a framework for building an API Reference Manual using all
1227        the "protex" comments embedded in the code
1228      - see pkg/generic_advdiff, pkg/mnc for examples
1229    o MNC:
1230      - make myThid the last argument for all subroutines
1231      - new default for the grid files: NO halos
1232      - add useMNC and other run-time flags
1233      - separate per-file-group handling of the unlimited dimension
1234      - early initialization of MNC w/ flags read at the eeboot stage
1235        and lookup tables set in initialize_fixed
1236      - write all MNC output to a freshly-created directory
1237    o thermodynamics sea-ice (thsice) is now tested with testreport.
1238    o test exp. advect_cs: use the standard cs32 grid ; update output.
1239    o Added functionality to grdchk:
1240      pick global i,j,k position (or nearest wet) where to perform check.
1241    
1242    checkpoint52l_post
1243    o new land formulation:
1244      a) use ground enthalpy as prognostic variable to ensure exact
1245         energy conservation.
1246      b) account for water temperature and for latent heat of freezing
1247         in all processes (rain, run-off, ground storage)
1248      c) compute surface and ground temperature implicitly.
1249    o aim_v23 modification for new land model:
1250      a) Treat separately land / ocean / sea-ice surface fluxes
1251         to allow implicit computation of land & sea-ice surface temp.
1252      b) add snow precipitation.
1253    checkpoint52l_pre
1254    
1255    o fix problem (when 1 tile is empty) in min/max monitor.
1256    o fix bug in timeAve (u,vZetatave in common block)
1257    o no restoring terms under ice for pkg/seaice
1258    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1259    o bug fix for pkg/seaice pickups
1260    o change MNC call locations and add coordinate attributes
1261    o mask vorticity at the corner ; affects global_ocean.cs output
1262    o fix ini_curvilinear_grid ; test CS experiments with mpi
1263    o aim.5l_cs: modify sea-ice fraction input file ; update output
1264    o exf: Adding simple range check routine for exf fields after read
1265    
1266    checkpoint52k_post
1267    o removed top-level directory "diags"
1268      - we migrated these functions to pkg/timeave a long time ago
1269    o fixed bug introduced in pkg/monitor
1270    o accuracy ctrlprec = 32 insuffient for gradient checks using
1271      averaged fields (I/O via cost_averages)
1272      -> use ctrl.h in active_file*.F to control I/O precision.
1273    o paramter list of CALL ADTHE_MAIN_LOOP
1274    o added initial do_the_model_io to ecco
1275    o set all ...Freq to zero after cost_final
1276      taveFreq, dumpFreq, pChkptFreq
1277    o MAIN and ECCO differentiability restored
1278    
1279    checkpoint52j_post
1280    o fix nchklev in tamc.h for global_ocean...
1281    o Bringing flow and store directives up-to-date
1282    o Really weird thing!
1283      call do_the_model_io from the_main_loop with parameters
1284      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1285      TAF places a faulty re-call of initialise_varia
1286      after cost_final call which should not be there!
1287    checkpoint52j_pre
1288    
1289    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1290      error messages
1291    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1292    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1293      debug output
1294    o modfied mdsio_writefield.F to handle non-global files under exch2
1295    o update AIM Cubed-Sphere exp (aim.5l_cs):
1296      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1297    o update AIM Equatorial Channel exp:
1298      use standard aim_v23 pkg and change the SST fields to be more realistic.
1299    o globalFile now works with exch2
1300    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1301      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1302    o limit timeave output for hi-res integrations
1303    
1304    checkpoint52i_post
1305    o removed CPP_EEOPTIONS.h from verification/*/code
1306    o updated the tiling for global_ocean_pressure
1307    checkpoint52i_pre
1308    
1309    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1310      the old pkg/aim).
1311    
1312    checkpoint52h_pre
1313    o shortened offending lines in exch2_send_rx?.template
1314    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1315    o genmake2: add build & execute test for NetCDF code
1316    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1317      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1318    o added useSingleCPUIO flag to monitor.F and mon_out.F
1319    o added temporary hack for sea-ice dynamics on the cube:
1320      metric terms are ignored and it is assumed that
1321      there is no sea-ice on cube faces 1, 2, 4, and 5.
1322    
1323    checkpoint52f_post
1324    o added exch2 cube routines to pkg/exch2
1325    o modified hs94.cs-32x32x5 to use it
1326    o added new grid files to hs94.cs-32x32x5
1327    checkpoint52f_pre
1328    
1329    checkpoint52e_post
1330    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1331      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1332    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1333      to work with implicit vertical advection and AB ;
1334    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1335    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1336     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1337    checkpoint52e_pre
1338    
1339    o fix bug in impldiff when Nr=1 or Nr=2.
1340    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1341    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1342    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1343      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1344    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1345    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1346    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1347    
1348    checkpoint52d_post
1349    o re-tiled many expts to allow comparison in multi-processor mode
1350      - updated output accordingly
1351      - changed hs94.128x64x5 to use intial T from file rather than use the
1352        random number generator
1353    o add infrastructure in model routines for fizhi and gridalt packages
1354    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1355    o changes to permit hi-res, cubed-sphere, configuration
1356      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1357      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1358      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1359        of surface winds for the cube
1360      (A verification experiment, based on global_ocean.cs32x15, but with
1361       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1362       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1363       complete with example surface forcing files and matlab scripts to look
1364       at the output and compare it with that of global_ocean.cs32x15.)
1365    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1366       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1367       to conform to the common rule.
1368    o check-in the first version of the coupler + interfaces for multi-components
1369       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1370       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1371       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1372       - ocean and atmos. share the same horizontal grid (no interpolation).
1373       - exchanges between component and coupler is done in forward_step
1374    o new verification experiment, cpl_aim+ocn:
1375       coupled ocean - AIM atmosphere on cs32 grid.
1376    
1377    checkpoint52d_pre
1378    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1379    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1380    
1381    checkpoint52c_post
1382    o Fixing OPTIONS files for use of exf:
1383      - ALLOW_ECCO not needed
1384      - ECCO_CPPOPTIONS.h should not be included from
1385        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1386        as has been the case in the past
1387      - All cal/exf related options are currently set in
1388        single header file. Should remain so until we
1389        agree on a consistent new policy.
1390    o Removed all CPP options for cal package.
1391      cal has no more CPP options.
1392    o modified STOREs in GAD_ADVECTION
1393    o corrected key comp. for passkey
1394    
1395    checkpoint52b_post
1396    o new version: "thsice" of thermodynamic sea-ice pkg:
1397     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1398     - modify fluxes but do not change theta directly;
1399     - light cleaning of bulk_force pkg (still needed with thsice).
1400     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1401       + output_thsice.txt to test thsice & bulk_force pkgs.
1402    o put back grid & coriolis monitor output.
1403    checkpoint52b_pre
1404    
1405    o call "do_the_model_io" at the beginning (=> dump initial state)
1406    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1407    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1408      (need info on NUMBER_OF_PTRACERS)
1409    o missing PTRACERS headers in some routines
1410    o default tamc.h in pkg/autodiff supposed to crash
1411      to ensure proper customization
1412    
1413    checkpoint52a_post
1414    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1415      - moved surfaceTendencyTice from pkg/seaice to main code
1416      - subroutine FREEZE_SURFACE now limits only surface temperature
1417        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1418        => new output.txt for global_ocean.cs32x15 & global_with_exf
1419      - keep the old version of FREEZE for backward compatibility;
1420        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1421      - corresponding modifs for TAF directives
1422    o added surface flux output variables to TIMEAVE_STATVARS
1423    o time-averaged output for pkg/ptracers
1424    o fix problem with ECCO-related divided adjoint
1425      snapshot file was missing some ad-variables,
1426      but no warning issued by TAF
1427    
1428    checkpoint52a_pre
1429    o some bug fixes for #undef REAL4_IS_SLOW
1430    
1431    checkpoint52 = ecco_c52_e35
1432    o after testing adjoints of checkpoint51u_post
1433    
1434    checkpoint51u_post
1435    o this is the post-merge tag of the ecco-branch
1436      (needs another clean checkout and re-testing)
1437    o various natl_box_adjoint configs and results
1438      but no input fields
1439    o obcs adjoint not yet merged!
1440    o adding ECCO global 1x1 and 2x2 degree configs
1441    o updated/extended some store directives for seaice
1442    o pkg/ecco now containes ecco-specific part of cost function
1443    o top level routines the_main_loop, forward_step
1444      supersede those in model/src/
1445      previous input data.cost now in data.ecco
1446      (new namelist ecco_cost_nml)
1447    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1448    
1449    checkpoint51t_post
1450    o this is the pre-merge tag of the ecco-branch
1451    
1452    checkpoint51s_post
1453    o cleanup: removed various obsolete #define-s
1454    o pkg/grdchk
1455      - renamed 'ph-grd 3' to 'grad-res'
1456      - merged from ecco-branch
1457        (remaining bug fixes for obcs gradient checks)
1458      - additional high-precision output for testreport
1459        (grep for 'precision_grdchk_result')
1460    
1461    checkpoint51r_post
1462    o cleaned up or removed CPP_OPTIONS.h files
1463    o updated results for some of the tests to reflect the new
1464      optfiles (-ieee: -O0 instead of -O3)
1465    
1466    checkpoint51q_post
1467    o cd_code:
1468      - moved cd_scheme.F -> cd_code_scheme.F
1469      - separate read_checkpoint from cd_code_ini_vars.F
1470      - separated cd_code part from write_checkpoint
1471      - updated AD_SOURCE, generated .flow
1472      - added CD_CODE_VARS.h to the_main_loop
1473      - Moving cd_code specific store dir.s to pkg/cd_code
1474    o ctrl package totally restructured
1475      - pack/unpack now optional and decoupled from
1476        xx_/adxx_ I/O
1477      - ctrl_pack/unpack cleaned
1478        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1479      - confined inclusion of AD_CONFIG.h to where necessary.
1480    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1481    
1482    checkpoint51p_post
1483    o create initial cd_code package
1484      - WARNING: the initialization of fields within packages
1485        is broken because INI_FIELDS (where READ_CHECKPOINT is
1486        called) is called *before* PACKAGES_INIT_VARIABLES.
1487        This seems to be backwards since
1488        1) its important to initially zero the entire field including
1489           the "halo" region
1490        2) zeroing needs to be done *before* reading pickup info
1491           and the pickup call might or might not happen in any
1492           particular run
1493      - this needs an overhaul for R2
1494    o cleanup verification/*/code/GMREDI_OPTIONS.h
1495    o cleanup testreport
1496    
1497    checkpoint51o_post
1498    o bringing AD-related verif's up to date with genmake2
1499      - carbon/
1500      - global_ocean.90x40x15/
1501      - hs.94.1x64x5/
1502      - (front_relax/ )
1503    o (more) consistent directory structure for AD-related verif.'s
1504    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1505    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1506    o bug fix in find_alpha.F for MDJWF:
1507      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1508        change rho -> rho-rhoConst
1509      - replace call find_rho to find_rhonum
1510    o initialisation of rFlx extended to full array (required by TAF)
1511      and shifted to thermodynamics
1512    o removed PTRACERS.h in ptracers routine
1513    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1514    o Correcting initialisations for fVerU, fVerV.
1515    o helping TAF to recognize dependency on kUp for
1516      fVerU, fVerV
1517    o Replacing delZ by delR in pkg/ctrl/
1518    checkpoint51o_pre
1519    
1520    o undid all of cp51 pending some cleanups and discussion
1521    o added the [#include "AD_CONFIG.h"] statement to all files that need
1522       it for adjoint/tl #defines
1523     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1524     o removed tools/genmake since it no longer works
1525    
1526    checkpoint51n_post
1527    o modifications to make FREEZE flux visible to pkg/kpp
1528      - moved surfaceTendencyTice from pkg/seaice to main code
1529      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1530      - subroutine FREEZE now limits only surface temperature
1531        (this means new output.txt for global_ocean.90x40x15,
1532         global_ocean.cs32x15, and global_with_exf)
1533    o added surface flux output variables to TIMEAVE_STATVARS
1534    
1535    checkpoint51n_pre
1536    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1537    o added [#include "AD_CONFIG.h"] to all files that use the following
1538      defines:
1539      - ALLOW_ADJOINT_RUN
1540      - ALLOW_TANGENTLINEAR_RUN
1541      - ALLOW_ECCO_OPTIMIZATION
1542    
1543    checkpoint51m_post
1544    o incorporating changes to get TAMC/TAF working in genmake2
1545      - added new TAMC/TAF targets to the Makefile
1546      - various cleanups related to package handling
1547      - these changes should have no impact on the forward model
1548    
1549    checkpoint51l_post
1550    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1551     - faster algorithm for cal_addtime.F
1552     - higher precision arithmetic, where needed
1553     - pkg/exf *startdate variables changed from calendar date to
1554       model integration time
1555    
1556    checkpoint51l_pre
1557    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1558    o enable to apply restoring on S & T only in a latitude band.
1559    o update output (external_forcing_surf modif. change truncation errors)
1560       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1561    
1562    checkpoint51k_post
1563    o change default to: useNHMTerms=.FALSE.
1564     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1565       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1566     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1567        exp1, ideal_2D_oce
1568     - change data file of oceanic exp (leave the results unchanged for now)
1569       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1570    o set gravitySign automatically according to the vertical coordinate used
1571      (and change sign: back to "logical" value: +1 when R increases downward)
1572    o added an include barrier to the default CPP_OPTIONS.h and
1573      removed the #include "PACKAGES_CONFIG.h" from it
1574    o fix a bug in mom_fluxform (from chk51j_post)
1575    
1576    checkpoint51j_post
1577    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1578    o adjusted some flow directives (dynamics, thermodynamics)
1579    o added cubed-sphere case to test cost function
1580    o heckpoint_lev?_directives.h now include
1581      pkg-specific directives, whenever those are enabled.
1582    o Moving pkg-specific flow directives to corresponding pkg
1583      Moving pkg-specific differentiation list to corresponding pkg
1584      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1585      ---> conventions are
1586           - pkg_ad.flow
1587           - pkg_ad_diff.list
1588           - pkg_ad_check_lev?_dir.h
1589    
1590    checkpoint51i_post
1591    o merge of the branch-genmake2
1592      - knowingly breaks the older genmake
1593      - automatic generation of all ALLOW_${PKG_NAME} defines
1594      - new testreport supersedes older testscript
1595    o large number of package inclusion and header cleanups
1596    checkpoint51i_pre
1597    
1598    o new output for adjoin of global ocean vector invariant
1599    o fix for checkpoint of thermodynamic seaice and bulk_force
1600    o Steph gchem various cleanups
1601    
1602    checkpoint 51h_pre
1603    o fixed some single quotes
1604    o modify gchem pkg to be more versatile
1605    o modifications to clean up dic pkg
1606    o add pkg/cfc
1607    
1608    checkpoint51g_post
1609    o provide links for ARPACK and ADM*TLM
1610    o start removing verification/vero/
1611    o update AD-related stuff
1612      (in particular some IF-statements in model/src/ routines)
1613    o adding to verification/global_ocean.90x40x15/ adjoint of
1614      vector invariant setup
1615    
1616    checkpoint51f_post
1617    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1618    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1619      of tracer Green's fucntions for ocean inversion project.
1620    
1621    checkpoint51f_pre
1622    o Added on-the-fly spatial interpolation capability
1623        "USE_EXF_INTERPOLATION" to pkg/exf.
1624      - This is a temporary Cartesian-grid hack until
1625        the super-duper ESMF coupler becomes available.
1626      - See verification/global_with_exf/README for usage example.
1627      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1628        flags and modified pkg/seaice accordingly.
1629    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1630        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1631        non-local transport term.
1632    
1633    checkpoint51e_post
1634    o pkg/mom_vecinv:
1635      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1636      - add time-ave diagnostic of vorticity advection.
1637    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1638    o atmospheric geopotential: - include water vapor effect;
1639                                - use p^kappa in p* scaling.
1640    o land pkg: read initial state from files.
1641    o AIM : add stratospheric drag in the upper level
1642    
1643    checkpoint51d_post
1644    o change function ILNBLNK (=> last non-blank char.) to return zero
1645      (instead of the string length) when the string. char is empty
1646    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1647    o modif's to restore TAMC compatibility
1648      - avoid "_d" constructs in PARAMETER declarations
1649      - avoid interrupting lines by comment lines
1650    o Use cluster local disks for purely local I/O
1651      vs. globally visible disks needed for ctrl stuff
1652      (merged from ecco-branch)
1653      - new active_file_loc... and mdsio_..._loc routines
1654      - affected packages: autodiff, ctrl, grdchk, mdsio
1655    
1656    checkpoint51c_post
1657    o introducing integer flag debugLevel
1658      - debLevZero: suppress all output
1659      - debLevA: standard
1660      - debLevB: equivalent to current debugMode=.TRUE.
1661    o introducing pathname variable mdsioLocalDir for mdsio
1662      that can be specified at runtime
1663      (relevant for cluster I/O to local disk)
1664    `
1665    >>>checkpoint51b_post
1666    adjoint of ptracers
1667    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1668    o extended state in checkpoint_lev?, etc.
1669    o alternative ctrl/cost with tr1 or ptracer
1670    o new comlev1_bibj_ptracers
1671    o new ptracers.flow
1672    o made ptracers_forcing same as external_forcing_s
1673    o added verification for adjoint with ptracers
1674      - adm. grdchk fail so far
1675      - tlm. grdchk OK
1676      - checked tapelev/comlev recomputations: OK
1677    <<<checkpoint51b_pre
1678    
1679    checkpoint51a_post
1680    o added code for biogeochemistry package
1681      - new pkgs: dic, gchem
1682      - new subroutine in ptracers
1683    o modify code for biogeo packages
1684      - in model/src and pkg/ptracers
1685    
1686    checkpoint51
1687    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1688      - autodiff, ctrl, exf, grdchk, seaice
1689      kept separate packages
1690      - cost, ecco, obcs
1691    o updating verification/internal_wave, verification/lab_sea
1692      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1693    
1694    checkpoint50i_post
1695    o Preparing next differentiable checkpoint and sync
1696      of MAIN vs. ecco-branch
1697      - 1st step: this one is differentiable
1698      - 2nd step: next(! not this) checkpoint will have updated packages
1699                  from ecco-branch)
1700    
1701    checkpoint50h_post
1702    o new package "land": provide surface BC for AIM.
1703    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1704    o AIM: use true log-P extrapolation for near surface temp (= as in
1705        F.Molteni paper) ; update aim.5l_cs output.
1706    o New variable in PARM03 for more flexible pickups
1707    o somewhat cleaned package initialisation sequence for
1708      ctrl/ cost/ ecco/ in packages_... routines
1709    
1710    checkpoint50g_post
1711    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1712      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1713      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1714        made the default because of faster convergence than ADI
1715    
1716    checkpoint50f_post
1717    o exf totally restructured
1718      - replaced all exf_set_ routines by one generic exf_set_gen.F
1719        and made sure it's still differentiable
1720      - split exf_getffields.F into new exf_bulkformulae.F
1721      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1722      - updated adjoint/makefile and relevant verif. accordingly
1723    
1724    checkpoint50f_pre
1725     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1726          + change Evap over land. (update aim.5l_cs output)
1727     o added missing .cvsignores and made uniform across expts
1728     o changed configuration of tidal_basin_2d expt
1729     o added pkg/debug functions for tracing code in fatal crashes
1730     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1731     o new fn in pkg/monitor to stop model if solution grows too big
1732     o removed lots of single quotes from comments
1733    
1734    checkpoint50e_post
1735    o make KPP work with PTRACERS
1736     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1737       nearly a copy of kpp_transport_s
1738     - there is no analogue to SurfaceTendencyS, so I have to use
1739       gPtr(of the surface layer) instead
1740    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1741    checkpoint50e_pre
1742    
1743    checkpoint50d_post
1744    o change kpp output from multiple-record state files to single-record state
1745      files analogous to write_state.F
1746    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1747      analogous to the cg2d-related output.
1748    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1749      so that writing to internal file fn (with length 512) fails.
1750    checkpoint50d_pre
1751    
1752    checkpoint50c_post
1753    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1754    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1755    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1756    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1757    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1758    
1759    checkpoint50c_pre
1760    Merging from release1_p13:
1761    o bug fix for pkg/seaice dynamic solver
1762    o Added SEAICE_initialHEFF to pkg/seaice
1763    
1764    checkpoint50b_post
1765    o store u*,v* in gU,V instead of in guNm1,gvNm1
1766    o in order to put the momForcing out of the Adams-Bashforth:
1767      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1768      to timestep.F
1769    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1770    o re-generate output for highly sensitive test-exp:
1771       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1772    
1773    checkpoint50b_pre
1774    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1775    o corrected CPP option mismatch in exf_Bulk... functions for case
1776      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1777    
1778    checkpoint50a_post
1779    o Bug fix for merging between c50 and KPP.
1780      ikey was passed from thermodynamics to kpp_calc via
1781      common block rather than being recomputed in kpp_calc,
1782      in contradiction with new key itdkey.
1783      New key ikppkey created, and tamc.h headers updated.
1784    
1785    checkpoint50
1786    - 2nd step of merge with ecco-branch:
1787      merge changes in ecco-branch back into main trunk
1788    - bug fix in find_alpha
1789    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1790    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1791    - merged some sliced AD support routines
1792    
1793    checkpoint49
1794    merged from ecco-branch:
1795    o exf:
1796      - Enable initialisation of forcing fields to constant
1797        (runtime) values.
1798      - in exf_getffields.F
1799        Reduce i-/j-loop to interior domain, discarding overlaps.
1800        That also fixes wrong TAF-key computations for key_1, key_2
1801        with bulf formulae.
1802      - exf_init.F modify #ifdef for exf_init_evap
1803      - exf_getffieldrec.F, ctrl_getrec.F
1804        The following INT-usages are not safe:
1805          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1806          fldcount = int(fldsecs/fldperiod) + 1
1807        and were modified.
1808    o autodiff: checkpoint_lev...
1809      - updated storing for bulk formulae (some arrays were missing)
1810      - added state for seaice package
1811      - synchronized with main branch
1812    o DIVA:
1813      Modif.s in
1814      - the_main_loop.F
1815      - the_model_main.F
1816      and added cost_final_restore.F cost_final_store.F
1817      o With these changes, it is possible to fully separate
1818        the first forward run to compute the cost function (mdthe_main_loop)
1819        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1820        into separate model executions.
1821        This enables better tuning of DIVA to given queue sizes.
1822      o Loss of cost function value in consecutive DIVA runs is
1823        fixed by storing to 'costfinal' file.
1824      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1825        beginning/end of adjoint integration is accounted for.
1826      The current changes apply to TAF-1.4.26.
1827      TAF has one remaining bug, requiring one manual change
1828      (see MITgcm manual).
1829    o cal: synchronized between MAIN and ecco-branch
1830    
1831    checkpoint48i_post
1832    o Changes to restore differentiability of code w.r.t. previous tag
1833      (mostly adding new routines to make list and replacing
1834      pressure by totPhiHyd).
1835    o Updated and merged grdchk package
1836      - has both ADM and TLM checks
1837      - works for single- and multi-proc.
1838      - output cleaned
1839      - worked successfully for parallel DIVA
1840    o genmake:
1841      - Adding -platform=SP4
1842      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1843    o Modif. for DIVA:
1844      ctrl_unpack should not be called in intermediate DIVA interval.
1845      (similar thing would apply for active files such as
1846      tbar, sbar, psbar, which should not be reinitialised;
1847      only relevant for ecco-branch)
1848    
1849    checkpoint48h_post
1850    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1851    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1852    o Added SEAICE_initialHEFF to pkg/seaice
1853    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1854    
1855    checkpoint48g_post
1856    --- EOS:
1857    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1858      store total Potential in totPhyHyd for diagnostics & EOS.
1859    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1860    --- Pressure/geopotential gradient:
1861    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1862    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1863      ( changes results of global_ocean_pressure )
1864    o NLFS + z-coord.: add eta*Rho' contribution.
1865    o accurate phiHyd when using interface-W at the middle between 2 centers
1866     ( changes results of ideal_2D_oce )
1867    o includes r* 2nd term in potential gradient.
1868    
1869    checkpoint48f_post
1870    Merging from release1_p12:
1871    o Modifications for using pkg/exf with pkg/seaice
1872      - improved description of the various forcing configurations
1873      - added basic radiation bulk formulae to pkg/exf
1874      - units/sign fix for evap computation in exf_getffields.F
1875      - updated verification/global_with_exf/results/output.txt
1876    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1877      (SBO) core products, including oceanic mass, center-of-mass,
1878      angular, and bottom pressure (see pkg/sbo/README.sbo).
1879    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1880      to avoid negative values in shallow regions.
1881      - updated verification/natl_box/results/output.txt
1882      - updated verification/lab_sea/results/output.txt
1883    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1884    o Added useSingleCpuIO option (see PARAMS.h).
1885    o Updated useSingleCpuIO option in mdsio_writefield.F to
1886      work with multi-field files, e.g., for single-file pickup.
1887    o pkg/seaice:
1888      - bug fix in growth.F: QNET for no shortwave case
1889      - added HeffFile for specifying initial sea-ice thickness
1890      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1891    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1892      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1893    o pkg/seaice:
1894      - adjoint-friendly modifications
1895      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1896    
1897    checkpoint48e_post
1898    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1899    o dynamics: change definition of computational domain & adapt mom_fluxform
1900      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1901    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1902        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1903        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1904        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1905        inverted_barometer solid-body.cs-32x32x1
1906      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1907    
1908    checkpoint48d_post
1909    o in preparation for r*:
1910     a) use pre-computed gradient of hydrostatic potential:
1911        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1912     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1913        => affects results of glob_oce_pressure (different truncation error)  
1914      update output.txt of ideal_2D_oce & global_ocean_pressure
1915    
1916    checkpoint48d_pre
1917    o in preparation for r*:
1918      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1919      pass the 2 comp. of the grad. as arguments to momentum S/R.
1920      but for the moment, only used if it does not change the results.
1921    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1922    
1923    checkpoint48c_post
1924    Modifications in treatment of initial flux forcing controls
1925    to avoid extra storing of flux fields.
1926    
1927    checkpoint48c_pre
1928    o Added tidal_basin_2d experiment (currently 1D!)
1929    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1930    
1931  checkpoint48b_post  checkpoint48b_post
1932  o r* coordinate added in #ifdef NONLIN_FRSURF block.  o r* coordinate added in #ifdef NONLIN_FRSURF block.
1933   (modification to pressure gradient not yet implemented)   (modification to pressure gradient not yet implemented)

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