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revision 1.95 by adcroft, Tue Nov 5 19:14:26 2002 UTC revision 1.665 by mlosch, Mon Jun 5 22:54:54 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 couple pkg/thsice to pkg/seaice:
8      - modify advection in seaice to accomodate new scalar fields to be advected
9      - only muliDimAdection scheme work with seaice/thsice
10      - mapping of thsice-variables to seaice-variables, back and forth
11      - does not break the verification experiments, but does not give the
12        desired results either
13    o pkg/seaice
14      - make (default) second order advection a bit less confusing?
15    
16    checkpoint58f_post
17    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
18      to pkg/seaice):
19      - new routines thsice_map_exf and thsice_get_exf provide the interface
20      - add an additional formal parameter to thsice_solve4temp
21    o pkg/exf:
22      - add new fields wspeed, snowprecip (to be able to couple to thsice)
23      - correct Stefan-Boltzmann constant
24      - new parameter for longwave surface emittance
25      - separate some stuff from exf_bulkformulae into new routines  
26        exf_radiation, exf_wind
27      - add new parameters and constants: longwave emissivity for ocean, ice
28        and snow, evaporation parameters over ice
29      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
30        either wind from stress or stress from wind
31    o pkg/thSIce:
32    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
33    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
34       and THSICE_CALC_THICKN
35    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
36    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
37      to make debugging easier.
38    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
39    o pkg/bulk_force:
40      - clean-up comments and parameters ;
41      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
42    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
43      generate new output for test-experiment: aim.5l_cs.thSI
44    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
45      testreport accordingly
46    
47    checkpoint58e_post
48    o SEAICE_CGRID adjoint done
49    o R_STAR adjoint implemented.
50      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
51      * need to sort out init. of h0facc, etc.
52    o Make pkg/profile fully independent of ecco,cost, etc. stuff
53      to be able to use it in pure forward.
54    
55    checkpoint58d_post
56    o upgrade simple test-experiment to tutorial example:
57     step.1: duplicate the experiment and (step.2) will remove the old copy.
58      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
59      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
60      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
61      tutorial_global_oce_biogeo    <- copy of dic_example
62      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
63      tutorial_plume_on_slope       <- copy of plume_on_slope
64      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
65      tutorial_global_oce_optim     <- empty for now (David ?)
66      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
67     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
68    o correct a sign problem in cost_scat.F
69    o obcs and ptracers: fix boundary conditions for advections schemes
70      with larger stencil
71    o thsice adjoint: start
72    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
73      completeness
74    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
75      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
76    o ptracers adjoint:
77      * avoid extensive recomputatations
78      * fix missing re-init. of gptr (missed by TAF)
79    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
80      me to turn off the excessive output to STDOUT that this package produces
81    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
82      and add those terms in Vector-Invariant formulation.
83    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
84      if the control period (xx_hfluxperiod etc) is 0
85    o in profiles pkg, clean routines and fix details
86    o in ecco pkg, reading ssh data:
87      fix problem in case the model does not start at iter0=0
88    o fix mnc-pickup/restart for ptracers
89    o new package prifiles:
90      code to compute profile-based cost by Gael Forget
91      (modifs in ecco, ctrl, autodiff)
92    o Benign bug fix in initialization (spotted by M. Mazloff) of
93      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
94    
95    checkpoint58c_post
96    o adjoint: finish NLFS adjoint and provide reference output in
97      verification/global_ocean.90x40x15/results_ad_nlfs
98    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
99      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
100      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
101      with SEAICE_CGRID defined.
102    o move calendarDumps from "data" to "data.cal" and clean-up the code
103      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
104    o add useEXF & useCAL flags (for now, set in hard-coded way)
105    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
106      (were missing in NH mode, and wrong in quasihydrostatic mode).
107      waiting for Chris updated version of calc_gw to add those CALLs.
108    o fix bug in quasihydrostatic S/R ;
109      add a test for this option: global_ocean.90x40x15.qshyd
110    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
111      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
112    o add on/off flag useOffLine for package OFFLINE
113    o seaice:
114      - modify advection so that it works also on the C-grid
115      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
116        problem in multi-tile runs with C-grid
117      - add flags for clipping ice velocities and/or masking solver forcing
118      - fix drag (ocean on ice) formulation and a bug that caused noise in the
119        C-grid solver
120      - added a few comments to seaice_diffusion.F
121      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
122        are now exclusive)
123      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
124        required re-ordering the code a little:
125       + make DAIRN global variable (defined in SEAICE)
126       + move computation of the viscosities eta and zeta into a new separate
127         routine (because I need to recompute them in seaice_ocean_stress.F)
128    
129    checkpoint58b_post
130    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
131      update output.txt of exp. aim.5l_cs.thSI
132    o various mnc cleanups and improvements:
133      + shrink lookup tables by factor of ~4
134      + better error reporting when running out of lookup space
135      + able to handle longer path/file names (up to 500 chars)
136    o adjoint:
137      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
138      - TBD: "hidden" mom_vecinv recomp. in dynamics
139    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
140     (allow to differentiate between forcing components using new integer flags:
141      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
142     and add new flag to put Dissipation tendency out of Adams-Bashforth.
143    o ecco
144      - enable trend removal from SSH anomaly obs.
145    o adjoint
146      - a fix for PmEpR when #undef EXACT_CONSERV
147      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
148      - try to fix "hidden" recomp. in forward_step for NLFS
149        (NLFS seems broken sometimes after I checked it in)
150    o seaice:
151     - add c-grid version of the dynamic solver:
152       + three new routines that are the c-grid substitute lsr, dynsolver
153         and ostres
154       + put a few fields that were local to dynsolver into global common
155         blocks, so that I can move the computation of stresses etc into
156         seaice_lsr (saves coding but may break the adjoint).
157     - replace more hardwired parameters by runtime parameters
158     - add ice masks that mask the rhs of the implicit solvers where there
159       is no ice (commented out in seaice_dynsolver, because i am not sure
160       if this works properly), eventually this should replace the clipping
161       of ice velocities in seaice_dynsolver to +/-40cm/s.
162    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
163      include it only where its needed
164    o move balancing of fluxes before the call of external_forcing_surf
165    o seaice:
166      - correct units of turning angles (now they are really in degrees)
167      - move computation of GWATX/Y out of main routine into dynsolver
168      - initialize GWATX/Y in seaice_init
169    o Apply mask on Fresh-Water flux (needed for SSH forcing).
170      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
171    o seaice: add runtime flags for turning angles (default to zero)
172    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
173      and trend from exf forcing and ctrl control adjustments
174    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
175      (since checkpoint57x_post)
176    o change the default rotation period to 86164.s = the Earth rotation
177    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
178      and based on a reference stratification. Tested within hs94.cs-32x32x5.
179    o seaice advection: add code for choosing between the default (2nd order
180      central differences) and multiDim advection schemes provided by
181      pkg/generic_advdiff
182    o seaice:
183      - removed all references to SEAICE_GRID.h fields from
184        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
185        (cubed-sphere configuration will change a little)
186      - grid computations in seaice_init are obsolete now.
187      - cleaned up code a little so that is easier to read (hopefully).
188      - added new (better?) discretizations of default advection and diffusion
189        (turn on with SEAICEuseFluxForm)
190      - replace 1 in 3d global fields by kSurface in growth.F
191      
192    checkpoint58a_post
193    o seaice:
194      - bug fix in advect.F
195    o shelfice:
196      - separate shelfice load anomaly from pload (breaks with time
197        dependent forcing), => introduce constant field shelficeLoadAnomaly.
198        Its default is 0., but it may be computed more cleverly from (unknown)
199        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
200        done offline. A good approximation of the pressure load anomaly is
201        necessary to avoid large initial adjustment processes underneath
202        deep-reaching shelfice.
203      - small fix in ISOMIP shelfice_thermodynamics
204      - add more sophisticated thermodynamics of Hellmer (1989), this is
205        now the default
206      - give a few constants more intuitive names
207    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
208      if bulk formulae are used in long integration (especially EmPmR). Turn
209      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
210      if balancePrintMean, the imbalance that is substracted is printed to
211      STDOUT.
212    o fix bug (typo) in obcs_apply_eta.F
213    o add a new package shelfice which enables us to model the circulation
214      underneath shelf-ice with draughts of hundreds of meters.
215     - works
216     - to do: + include improved thermodynamics
217              + check whether kSurfC (from model/inc/SURFACE.h) can be used
218                instead of new field kTopC
219              + can we use topoFile, Ro_surf and existing code in ini_depth.F
220                instead of new field R_shelfIce and new code in ini_depth.F
221                and ini_mask_etc.F?
222              + adjust vertical mixing schemes?
223    o seaice pkg:
224     - add a cpp-flag to include a simple formula for a salinity dependent
225       freezing point of sea water at the surface
226     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
227       meridional stresses are now different (and hopefully correct)
228    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
229       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
230       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
231    o pkg/diagnostics: add options and parameters for regional-statistics
232       diagnostics ; define regions by reading a region-mask from a file
233       (might add other options later)
234    o pkg/bulk_force:
235     - add option and parameters to use AIM surface-flux formulae.
236     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
237       others forcing fields (defined in PARM05, parameter file "data") are loaded
238       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
239     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
240     - use the right EXCH call for uwind,vwind (to work on CS-grid).
241     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
242       and parameters (note: calcWindStress replaces .NOT.readwindstress).
243     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
244    
245    checkpoint58
246    o add "--embed-source" option to genmake2 which, when the supporting
247      tools can be compiled (as determined by genmake2) will turn on the
248      embed_files package which then embeds the entire MITgcm source code
249      (*.[fFhc] + Makefile) used for the build within the executable
250      - requested by CNH but off by default
251      - adds a paltry <9MB to the mitgcmuv executable in most cases
252      - only writes the output when useEMBEDSRC in eedata is true
253    o clean up 3-dim. relaxation codes:
254      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
255      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
256      * Thanks to Tom Haine for testing!
257    
258    checkpoint57z_post
259    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
260      affects output (@ truncation level) of exp. plume_on_slope ; updated.
261    o fix the pickup behavior for obcs in combination with ptracers
262    o fix a bug in ptracers_external_fields_load
263    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
264      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
265    o transfered surface NH pressure to eta field (if exactConserv).
266    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
267         and update lab_sea output.txt file.
268    o completing 3-dim. relaxation code: additional term
269         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
270      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
271      * At compile time, in "EXF_OPTIONS.h" set
272          #define  ALLOW_CLIMTEMP_RELAXATION
273          #define  ALLOW_CLIMSALT_RELAXATION
274      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
275          tauThetaClimRelax3Dim = 15552000.0,
276          tauSaltClimRelax3Dim  = 15552000.0,
277      * 3 cases:
278          1) Use a constant-in-time 3-dim. field
279          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
280          3) Real-time relax. to time-evolving prescribed field
281    o Adding Laplacian-type smoothness constraint on
282      initial and boundary (forcing) controls (ic, bc)
283      * enable at compile-time via
284        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
285      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
286      * Absolute scale somewhat unclear so far
287      * no area weighting was included since no other cost term does so far
288    
289    checkpoint57y_post
290    First step for a NLFS adjoint
291    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
292    o new init. routines for calc_r_star, calc_surf_dr
293    o still need to deal with ini_masks_etc
294    o testreport seemed happy
295    checkpoint57y_pre
296    
297    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
298    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
299    o add new offset feature to offline pkg (plus minor cleanup)
300    o cfc fixes for final year of integration
301    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
302      be in GCHEM_OPTIONS).
303    
304    checkpoint57x_post
305    o fix testreport Pb in multiple test experiment.
306    o cleanup our namelist syntax in verification:
307      - make it more F95 standards compliant (some work still needed)
308      - allows the vast majority of our tests to work with gfortran
309    o Non-Hydrostatic:
310     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
311     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
312    o Allow to apply AB on T,S rather than on AB(gT,gS):
313     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
314     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
315       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
316     - need a "clever" read_pickup to restart from the other AB formulation
317    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
318    o remove some unused variables (reduces number of compiler warnings)
319    o adjoint
320      * Disable useVariableViscosity for adjoint for time being
321        (there are a number of extensive recomputations)
322      * Initialize certain variables needed for adjoint
323    
324    checkpoint57w_post
325    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
326                 fix the singleCpuIO RS version of MDSWRITEFIELD
327       and add a WARNING if using globalFiles=T with multi-processors.
328    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
329      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
330    o tracer advection scheme:
331      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
332       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
333       was not very convenient).
334      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
335       (further tests needed for the implicit DST & Flux-Limiter schemes).
336    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
337      and sRef for convenience, handy, when you want to initialize
338      ptracers in a large domain with a constant non-zero value. Also,
339      untangle ptracers_init.F a little.
340    
341    checkpoint57v_post
342    o change dome exp. to use variable viscosity in side-drag terms.
343    o remove all the files from the cfc_offline test since they are now
344      incorporated into tutorial_cfc_offline which has been producing
345      identical results for a few days of testing
346    o add new parameter: sideDragFactor to enable half-slip-side BC
347      and change side-drag S/R to use viscosity from mom_calc_visc
348      (can switch back by setting sideDragFactor=0.); affects results at
349      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
350       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
351    o vorticity & strain are now computed without masking, to account for
352      no-slip-side BC in variable viscosity calculation ; mask is applied
353      anyway later on, before computing advection/coriolis terms.
354    o modify exp4 to test new obcs support for reading from external files
355      and for passive tracers
356    o fix behavior of ptracers_monitor when monitor output is written to a
357      netcdf-file; still not independent of monitor.F (writes in the same
358      file).
359    o change default value of tRef (put a uniform, meaningful value for ocean
360      & atmos) and initialize sRef (was missing, as Martin mentioned).
361    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
362      to be proportional to enstrophy dissipation length.  Thus,
363       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
364      This is now consistent with Smagorinsky and with the manual.
365    
366    checkpoint57u_post
367    o OBCS and PTRACERS: add open boundary support for passive tracers
368      - either use homogenous (pseudo) v.Neumann conditions or prescribe
369        OB-values from file; this is not different from the way theta and salinity
370        are treated
371      - however, Orlanski-radiation conditions are not supported, and the model
372        will stop if you use pTracers and Orlanski at the same time.
373      - beefed up the rountine obcs_external_fields_load: now only those open
374        boundary values are overwritten with values from files for which there
375        are really files, otherwise the OB-fields remain untouched. This makes
376        it possible to use different OBs at different ends of the domain (as
377        with EXF)
378    o reduce number of exch calls in shap_filt (s2).
379    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
380      truncation level) 4/5 MLAdjust test results (11&12 digits match).
381    
382    checkpoint57t_post
383    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
384    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
385      same truncation, independent of the face number: affects affects several
386      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
387    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
388      note that biharmonic viscosity + no-slip was not tested in any experiment.
389    o fix bug in non-linear free-surf side-drag ; generate new output for
390      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
391    o make mnc honor the writeBinaryPrec flag for most kinds of output
392    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
393    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
394      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
395    o add brackets in multi-terms sum to get same truncation, independent of
396      the face number (manage to get exactly same value of gU,gV at the cs-edge)
397      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
398    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
399      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
400      a maximum grid-scale Reynolds number.  Also, changes all length calculations
401      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
402      Suggested values of viscosity parameters found in mom_calc_visc.
403      Many new viscosity diagnostics available.
404    
405    checkpoint57s_post
406    o Add clearing-house for viscosity calculations, mom_calc_visc and
407      correct numerous bugs in LeithD and Smagorinsky discretizations.  
408      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
409      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
410      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
411      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
412      The Strain-Tension form is now called with useStrainTensonVisc=.true.
413      ViscAhStrain and viscAhTension are now retired.
414    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
415    o In response to JMC's bug report, genmake2 now ignores any soft-links
416      that it finds in the *current* directory when searching for files.
417      Soft-links found in any other source directories will still work as
418      they did before.
419    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
420      a C routine to unlimit the stack size
421    o mnc-ify pkg/aim snapshot vars
422    o mnc-ify pkg/land as requested by Daniel
423    o various changes to mnc including:
424      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
425      - output can now be grouped so that all files within a group
426          change the ITER portion of their names in lock-step together
427      - can now read ("global") PER-FACE (in addition to PER-TILE) files
428          and works with both EXCH1 and EXCH2 (but needs more testing)
429      - writing works for all verification test cases w/ g77 on Linux
430    
431    checkpoint57r_post
432    o make MNC variable initialization happen earlier
433    o add diagnostics for (almost) each term of the momentum Eq.
434    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
435    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
436    o remove MINIMAL_TAVE_OUTPUT option ;
437      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
438    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
439      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
440    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
441    o add time-dependent SST, SSS control
442    o cost terms in ecco/ modularized (new cost_generic.F)
443    o cost_averages routines are modularized (new cost_averagesgeneric.F)
444    o new infrastructure for seaice model vs. obs misfits in seaice/
445      * driver from the_main_loop.F is seaice_cost_driver.F
446      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
447      * gradient check in Exp. 6a of natl_box_adjoint/
448    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
449      (see README file)
450    
451    checkpoint57q_post
452    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
453    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
454      - bug was reported by Jean-Michel and Ian Fenty
455    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
456      update exp. cpl_aim+ocn output.
457    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
458      Needed for high-res. runs with large global files
459      to be able to limit tapelev size
460    o Changed some tests for adjoint:
461      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
462      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
463      * global_ocean.90x40x15/ back to default 3-level checkpointing
464    o Modifications to enable scripted COMMON to MODULE conversion
465      * verification/OpenAD/code/ has necessary scripts and description;
466      * converts, compiles and runs successfully;
467    
468    checkpoint57p_post
469    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
470    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
471      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
472    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
473    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
474      (was already the case for dissipation with mom_vecinv,
475       and also the case for grad.PhiHyd when staggered-timeStep)
476      This will allow to put dissipation out-off the AB time-stepping.
477     Unfortunately, affects truncation error. Update output of exp. that "fails"
478      (cg2d matching number) and leave the others for later: front_relax(10),
479      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
480      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
481    
482    checkpoint57o_post
483    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
484      (2) its ready to be documented during the 20050801 DocFest
485    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
486      for ideal_2D_oce and lab_sea on linux_ia32_g77
487    o set to #undef CTRL_SET_OLD_MAXCVARS_30
488      in global1x1_tot/code_seaice_adj to access indices 32, 33
489      (worth another tag)
490    
491    checkpoint57n_post
492    o adding precip control xx_precip 32
493    o adding swflux control xx_swflux 33
494    o Replacing 10 forcing penalty cost routines by 1 generic.
495    o Implementing partitioning in time-mean and variable adjustment
496      for atmos. state.
497    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
498    o in natl_box_adjoint:
499      * updated exp 1 to 10
500        (but does not have time-mean vs. variable split results yet)
501    o updated global1x1/*_seaice_adj/
502      to incorporate latest changes
503    o enable useSingleCpuIO for mdsio vector routines
504      (applies in particular to tapelev I/O)
505    o removed inefficient K-loop in all active_file*control*.F
506    
507    checkpoint57m_post
508    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
509      and advect_cs (use EXCH-2 and standard cs-32 grid files).
510    o pkg/exch2: filling of face-corner halo regions is optional
511      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
512    
513    checkpoint57l_post
514     tag before updating tutorials (pre-release-2)
515    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
516       for output and interpolation of input fields onto model grid)
517    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
518       Affects results of exp. rotating_tank ; update output.txt.
519    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
520          and taking the square quantity and/or using a fraction-weight field.
521    o fix aim_diagnostics_init.F mate numbers.
522    o add mnc output capability to diagnostics/diagstat and update
523      our cvsignore files for the ACSII output generated
524    
525    checkpoint57k_post
526    o lab_sea now uses diagnostics package and provides a suite of
527      new EXF diagnostics output.
528    
529    checkpoint57j_post
530    o exf
531      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
532        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
533        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
534      * extended diagnostics output
535        - now includes all EXF variables
536        - hs, hl moved to common block
537        - separate S/R for diagnostics, called after ctrl vector is added
538        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
539        - EXFqnet contains true Qnet (i.e. includes qsw)
540      * updated verif. lab_sea, global_with_exf
541      * Rearranging hflux (exf_mapfields -> exf_getforcing)
542        to ensure that diagnostics sees a true EXFqnet
543    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
544    o diagnostics pkg: change pointers so that 1 diagnostic can be used
545      several times with different frequencies.
546    o mnc-ify the thsice package as requested by Daniel Enderton
547      - the monitor--MNC output needs work
548      - many attributes need to be added (most are currently blank)
549    o mnc-ify theaim_v23 package as requested by Daniel Enderton
550      - many attributes need to be added (most are currently blank)
551    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
552    o add Sadourny like discretization to the 4th.O vorticity advection scheme
553    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
554      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
555         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
556    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
557     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
558    
559    checkpoint57i_post
560    o Diagnostics package was changed: diagnostic allocation is now deactivated
561      by setting an empty file name in the namelist (used to be by setting 0 frequency)
562    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
563      add 1rst Order upwind vertical Shear.
564    o add a quick fix for A/B checkpointing in OFFLINE mode
565    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
566      end-run around the C/Fortran linking horror in eesup/src/timers.F
567    o added pkg/runclock: allows user to terminate run based on wall clock
568    o added non-hydrostatic scaling parameter: nh_am2
569    o pkg/my82: futile attempt to make results compiler-independent by adding
570      some "_d 0", etc. no effect.
571    o for mnc output, fill the 'T' coordinate var with myTime and create a
572      separate 'iter' variable for iteration count
573    o pkg/diagnostics:
574      add new capability: output of Global/Regional & per-level statistics ;
575      tested against monitor output (including land & thSIce) on various exp.
576    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
577    
578    checkpoint57h_done
579      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
580      data.diagnostics, data.gchem, data.ptracers) is done.
581    
582    o pkg/diagnostics: prepare for Global/Regional statistics.
583      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
584    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
585      and rename it: DIFFERENT_MULTIPLE
586    
587    checkpoint57h_post
588    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
589    o pkg/diagnostics: change output frequency, now in seconds (instead
590      of Nb of iterations). This requires to change data.diagnostics.
591    checkpoint57h_pre
592    
593    o in mnc, let the user create the output dir if both mnc_outdir_date
594      and mnc_outdir_num are false
595    o add fflags() to pkg/diagnostics which allows one to specify, on a
596      per-file basis, the file precision [default behavior is unchanged]
597    o added diagnostics to pkg/kpp, including computation of mixed layer
598      depth based on a temperature/density criterion
599    o updated verification/natl_box to test the new pkg/kpp diagnostics
600    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
601    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
602    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
603      not mnc -- this mistake was found by JMC and is now corrected
604    
605    checkpoint57g_post
606    o add Adams-Bashforth 3rd Order time stepping:
607      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
608      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
609    checkpoint57g_pre
610    
611    o make lambda[Theta,Salt]ClimRelax spatially varying
612      (default remains spatially uniform constant based on tau)
613    o added new control variables
614      * init. uVel, vVel, etanN
615      * lambda[Theta,Salt]ClimRelax
616    o separate masks used for ctrl_pack/unpack 'from write_grid' output
617      (suggested by G. Forget)
618    
619    checkpoint57f_post
620    o add parameter "baseTime" = model base time = time at iteration zero
621      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
622      account for baseTime shift
623    o move Coriolis arrays from PARAMS.h to GRID.h
624    checkpoint57f_pre
625    
626    o mnc-ifying the seaice package
627    o introduced an alternative length scale calculation for use in the limiting
628      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
629    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
630    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
631      as well as grad(vort3).  Made it compatible with both approximate form
632      for the cubed sphere and full form of these gradients.  Added flag
633      useFullLeith to select between approximate and full form.  
634    o add "d0" in getcon.F to reduce differences between compilers/platforms
635      update output.txt of exp. fizhi-gridalt-hs
636    o change port_rand funtion to allow to set the seed.
637    o fix obscure MNC bug involving conversion between reals and integers
638      - it caused no problems with certain (eg. gcc, ifc) compilers but the
639        new version is now more standards-compliant
640    o adjoint-related modifications
641      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
642      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
643      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
644    
645    checkpoint57e_post
646    o Adding eddy stress controls a la Ferreira et al.
647    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
648    
649    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
650      update output.txt of exp. fizhi-gridalt-hs
651    o add more "Z" dimensions and associated coordinate vars to MNC
652    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
653    o parameter calendarDumps: when set, approximate months (30-31 days) and years
654      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
655      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
656      months and years.  Requires pkg/cal.
657    o diagnostics: add pickup functionality
658      - off by default for backwards compatibility
659      - current version only uses MDSIO -- MNC will be added
660    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
661    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
662    
663    checkpoint57d_post
664    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
665    o modify verification/ideal_2D_oce so that it tests the creation of mnc
666      output from the diagnostics package
667    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
668    o make genmake2 more portable by using ".$FS" instead of ".f" for more
669      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
670    o add coordinate variables to the MNC output from the diagnostics package
671    o change MNC-flags default value: true when useMNC=TRUE
672    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
673      the ability (off by default) to read the grid information using MNC
674    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
675    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
676    o do snap-shot diagnostics at the middle of the time-interval (instead of
677      at the end).
678    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
679      new test for AIM with thSIce + slab-ocean
680    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
681    o move state variable diagnostics to the beginning of the time step ;
682      (note: still needs some work specially for snap-shot diagnostics)
683      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
684    
685    checkpoint57c_post
686    o Change testing option (-ieee) to get closer agreement between g77 & ifort
687    o generate new output.txt files on faulks with g77 & the new -ieee option
688    checkpoint57c_pre
689    
690    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
691      update output.txt of exp. global_ocean.90x40x15
692    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
693      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
694    o add saltFlux(+File) forcing capability with periodicExternalForcing
695    o allow to use pkg diagnostics for GM-Redi & ThSIce output
696    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
697    o improvements for the MNC output from DIAGNOSTICS:
698      - correct handling of the unlimitied dimension
699      - all dims now have associated coordinate variables
700      - variables located at U, V, and Corner ("Z") points are now written
701        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
702        *all* data points are output
703    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
704    o added pkg/seaice/seaice_monitor.F
705    o mdsio_readfield.F can now read files visible only to master MPI process.
706    o pkg/seaice: some test code for ice-modified ocean stress
707    o exf_getffields interpolation defaults to bilinear for all scalar forcing
708      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
709      spurious negative numbers for precipitation and humidity.  Will cause
710      some small numerical differences for integrations using pkg/exf/exf_interp.F.
711    o pkg/ctrl/
712      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
713        May be enabled via doPackDiag
714      *  introduce z-scaling of
715         + gradient (doZscalePack) and
716         + control (doZscaleUnpack)
717    o pkg/mdsio/
718      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
719      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
720    
721    checkpoint57b_post
722    o simplify options in diagnostics_fill arguments (remove weird combinations)
723    o fix MNC coordinate variables so that they now contain per-face index
724      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
725      general, EXCH2 grids are only aligned to a "local" coordinate system
726    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
727    o Implement instantaneous output within pkg diagnostics:
728      setting a negative frequency in data.diagnostics produces
729     "snap-shot" output (as opposed to time-average if freq > 0)
730    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
731      NOTE: change ptracer diagnostics name: use 2 characters to work with
732            more than 9 tracers. Add also diagnostics of advect & diffus flux.
733    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
734      becomes the coordinate variable for the 'T' dimension
735    o add CF-style coordinate variables to MNC
736      - just a first cut:  numbers are meaningless on the cubesphere and
737        missing along the T axis but otherwise it works!
738    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
739    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
740    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
741      this is based directly on what the model compute, so that the content of
742      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
743    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
744    o clean up build options files for SunOS, in particular
745      - remove -traditional from xmakedepend
746      - change -xarch=v9 to -xarch=native for f77
747      - restore use of make (not gmake)
748      - add CC=gcc if using g77
749    o changes per discussion of AM, JMC, & EH3 today:
750      - move redundant "grid" variables out of "state" -- in preparation of
751        creating proper CF-style coordinate variables and in recognition
752        that any/all grid variables can be easily copied (eg. w/NCO) from
753        the grid files into any of the other NetCDF files
754      - *always* output grid variables with MDSIO (this will eventually be
755        changed)
756      - output MNC grid file if useMNC is true
757    o every instance of _END_MASTER() has been found and replaced with
758      _END_MASTER( myThid ) in order to satisfy certain picky Sun
759      preprocessors
760    o re-arrange diagnostics pkg initialisation:
761     - allow each package to extend the available diagnostics list
762     - add some checking and fix small problems (multi-threaded, ...)
763     - new S/R diagnostics_fill (replace fill_diagnostics):
764       look through the short list of active diag. (instead of the long list)
765       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
766    
767    checkpoint57a_post
768    o this set of changes restores TAMC compatibility
769      tested for global_ocean.90x40x15 adjoint on trough
770      (what a pain)
771    
772    checkpoint57a_pre
773    o some modifs in tools/build_options for sunos
774    o call ctrl_pack for ctrl at end for optimcycle=0
775    
776    checkpoint57
777    o add horizontal bi-harmonic viscosity for vertical velocity
778      - new parameter viscA4W (defaults to viscA4)
779      - affects only non-hydrostatic code
780      - to be done: no-slip lateral boundary conditions
781    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
782    o implement Implicit Vertical advection for pTracers
783    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
784      (implemented also for implicit vertical diffusion & advection)
785    o OBCS: extend application of tracer open boundary conditions
786      to a strip beyond the boundary of width Olx/Oly
787    o add call monitor to TAF set of required calls (flow directives)
788      and include in natl_box_adjoint
789    o untangle a few ifdefs related to cost, ctrl, autodiff
790      untangel a few ALLOW_ECCO_OPTIMIZATION
791    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
792      (theta2, salt2 in ecco_cost_weights)
793    
794    checkpoint56c_post
795    o OBCS as control variables
796      - update ctrl_ad_diff.list, obcs_ad_diff.list
797      - remove balance of obcs controls from default
798      - fix index bug nobcs in ctrl_init
799      - fix dummy fields filen in ctrl_pack
800      - add dummy weights for obcs
801    o lsopt: comment out fort.94 output
802    o optim:
803      - remove unnecessary header files
804      - adjusted namelists
805      - add xerbla.F to Makefile
806    o exf:
807      - multiple modifications of exf_check_range
808      - unit change in exf_init_runoff from [m/year] to [m/s]
809    o mdsio:
810      - i/o-vector change debugLevel from debLevA to debLevB
811    
812    checkpoint56b_post
813    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
814      is called from DO_THE_MODEL_IO
815      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
816      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
817      - clean up PTRACERS_WRITE_TIMEAVE a little
818    o add another verification experiment that tests both the cfc-pkg and
819      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
820      reactive tendencies treated inline with regular timestepping
821    o testreport previously did a lousy job of comparing small numbers, so
822      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
823      implemented in the little c-progam tmp_cmpnum.c which is embedded in
824      testreport.
825    o ptracers_monitor: bug fix for MPI
826    
827    checkpoint56a_post
828    o GCHEM: finish reorganizating the package
829      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
830        (introduces another 3D-array for each passive tracer, but only if
831        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
832        gchemTendency is not needed because the timestep is done separately)
833      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
834      - GCHEM is now---more or less cleanly---separate from PTRACERS
835      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
836        so clear to me how that should be done in a general way.
837    o CFC: improve formatting of output in CFC_ATMOS
838    o PTRACERS:
839      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
840        that ALL experiments with ptracers enable can be checked. This makes
841        GCHEM_MONITOR obsolete.
842      - include a runtime parameter PTRACERS_monitorFreq that defaults to
843        monitorFreq
844      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
845    o add PTRACERS (PTR0[1-5]) to testreport output
846    o exf_check_range:
847      * default changed to .TRUE.
848      * will check values for niter0 if debLevA, every timestep if debLevB
849      * STOP in exf_check_range if 'out of range'
850      * range chosen generous to allow for potential extema
851      TBD: a version with stricter range
852           permitted range would be runtime parameters
853    o GMredi:
854      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
855      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
856      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
857    o GCHEM:
858      - move call to GCHEM_FORCING_SEP, so that it is now called before
859        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
860      - introduced a useGCHEM runtime flag and applied it everywhere.
861      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
862        this flag is now only visible within GCHEM-pkg routines.
863      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
864        be replaced by a 3D array that is computed before thermodynamics; for
865        this, the tracer ID iTracer had to be included into the parameter list
866        of ptracers_forcing
867      - set up forward_step to call gchem_forcing, that will replace
868        gchem_forcing_int in ptracers_forcing
869      - cleaning up
870    o small cleaning of exch2: remove files that are also in eesupp/src
871    
872    checkpoint56
873    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
874    o mnc: cleanup "full" files--fixes out-of-memory problem
875    o ECCO-GODAE
876      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
877      * fully merged and updated from SIO code
878        windstress sign change affects
879        - exf_inscal_[u/v]stress
880        - sign of xx_tau[u/v] adjustments
881        - signs in cost_scat
882      * ctrl_get_gen: avoid update of tau[u/v] for first few days
883      * natl_box_adjoint updated and compressed
884      * 2-level checkpoint switch added
885        (tested in EXP. 1 of natl_box_adjoint)
886      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
887    o SVD
888      * first complete, non-hacked version for SVD calculations
889      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
890        performed via direct access files admtlm_vector.it????
891        (via ctrl_[un]pack)
892      * optimcycle is used for ARPACK iteration counter
893        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
894      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
895        and add linear transforms where necessary
896      * controls are initial/final SST, SSS (can be extended; need to check
897        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
898    o mdsio: filename info to both stderr, stdout
899    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
900      from sign change
901    
902    checkpoint55j_post
903    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
904      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
905    o add consistent build directories and .cvsignore files to verification
906    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
907    o make all subroutines 30 or less characters in length for certain older
908      compilers to work (a thorough search only turns up two routines in
909      pkg/ptracers)
910    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
911      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
912    
913    checkpoint55i_post
914    o change arrays for total vertical diffusivity (2.D if explicit,
915      3.D if implicit) ; each ptracer uses its own background value.
916    o added mnc/NetCDF output capability to ocn_compon_interf
917      - added bits to verification/cpl_aim+ocn so that it can run on
918        ITRDA and other clusters without the mpirun "-wd" option
919    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
920      configuration
921    o give MNC the ability to create additional files rather than
922      exceeding a specified file size limit "MNC_MAX_FILESIZE"
923      - the default is just less than 2GB which is a practical limit
924        on many systems
925    o Compute the non-local term using either KPP vertical diffusivity (=default)
926       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
927    
928    checkpoint55h_post
929    o add verification test "vermix"
930    o remove all the *_ioinc flags and replace with the single global
931      outputTypesInclusive flag
932    o allow to set a vertical profile of vertical diffusivity for T & S
933    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
934    o useMNC moved from data.mnc to data.pkg
935    
936    checkpoint55g_post
937    o Renaming carbon AD experiments to comply with testreport conventions
938    o Updating adjoint of Held-Suarez hs94.1x64x5
939    o Fixing directives for non-ECCO forward_step, after ECCO directives
940      have been fixed to avoid recomp. of do_oceanic_phys
941      Works well for global_ocean.90x40x15,
942      but recomp. issue remains for carbon
943    o Updating adjoint output for natl_box_adjoint after
944      pkg/ecco has been modified (see taga c55d_post)
945    
946    checkpoint55f_post
947    o rename to timeave_init_fixed
948    
949    checkpoint55e_post
950    o some delicate re-shuffle of store directives to avoid one
951      extra call of do_oceanic_physics
952      affects ecco_the_main_loop.F, do_oceanic_physics.F
953      checkpoint_lev1_directives.h
954    o NB: this may break global_ocean adjoint temporarily,
955      but it is clear how to fix it. Will do later, need this now.
956    
957    checkpoint55d_post
958    o ECCO specific cost function terms (up-to-date with 1x1 runs)
959    o ecco_cost_weights is modified to 1x1 runs
960    o modifs to allow observations to be read in as
961      single file or yearly files
962    o enable to read exf forcing fields as either
963      single file or yearly files (flag useExfYearlyFields)
964    checkpoint55d_pre
965    
966    o switch between 2-level and 3-level checkpointing
967    o add ability of MNC to write local and "partial" (eg. 2D slices where
968      the full 3D field is never actually stored) arrays to NetCDF files
969      with the correct (that is, the complete multi-dimensional) set of
970      array indicies
971      - used in mom_vecinv() to write the diagFreq output
972      - tested (demonstrated) in verification/aim.5l_cs
973    o further mnc-ification
974      - add verification/lab_sea to the list with mnc setups
975      - fix undefined mnc v-names in cd_code
976      - add kpp to mnc output (both snapshot and timeave)
977    o non-hydrostatic code
978      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
979        in calc_gw.F
980      - defaults to viscAh
981      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
982        friction or Leith) in non-hydrostatic mode, as long as there is
983        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
984    o pkg/cost
985      extend simple cost functions to treat time mean quantities
986      (T,U,V) via cost_accumulate_state from cost_tile
987    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
988        be 2 times larger than the minimum size the advection scheme requires.
989        now get a perfect conservation of salt in advect_cs test-exp (updated)
990    o GGL90 (Gaspar's TKE mixed layer)
991      - add horizontal diffusion of TKE, requires exchanges in
992        do_fields_blocking_exchanges, horizontal diffusivity is zero by
993        default. In OPA there is no horizontal diffusion of TKE but the
994        mixing coefficients are computed from a horizontal average of TKE of
995        6 points or so. I think that diffusion has a little more physical
996        justification.
997      - clean up ggl90_calc in the hope of reducing memory usage (this hope
998        was in vain)
999      - mask tke-variable in ggl90_init
1000    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1001    o fix biharmonic diffusion on CS-grid.
1002    o more obcs stuff
1003      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1004        for reading boundary values. This routine is called from
1005        obcs_prescribe_read
1006      - updated obcs_check
1007      - changed sponge layer relaxation parameter units for days to seconds
1008      - turned off sponge layer by default
1009      - changed argument list of OBCS_CALC to myTime+deltaTclock
1010      - fixed about 35 bugs in obcs_external_fields_load
1011    
1012    checkpoint55c_post
1013    o obcs stuff
1014      - new runtime flags useOBCSprescribe, useOBCSbalance
1015      - re-arranged obcs_calc
1016      - moved exf_getobcs to obcs_prescibe_read
1017        obcs_prescibe_read is called after ORLANSKI stuff
1018        and independent of it (executable can contain all).
1019      - updated obcs_check
1020      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1021        These may be necessary only if tangential velocities are
1022        prescribed at OB, not sure, needs testing.
1023    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1024      which simplifies the calls and passes the ifc check-bounds test
1025    
1026    checkpoint55b_post
1027    o add a 2D scalar, Z location, exchange_2 routine.
1028    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1029      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1030      affects advect_cs results (for the wrong reason): update output.txt
1031    o use a more standard discretization for biharmonic viscosity ;
1032     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1033      affects results of dome set-up: update output.txt
1034    o fix gad_advection.F (CubedSphere part), back to version 1.23
1035    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1036    
1037    checkpoint55a_post
1038    o merged code to
1039      * prescribe/read time-dependent open boundaries
1040        (works in conjunction with exf, cal)
1041      * sponge layer code for open boundaries
1042      * each boundary N/S/E/W now has its own CPP option
1043        (healthy for the adjoint)
1044    
1045    checkpoint55
1046    o up-to-date adjoint of previous breaks
1047      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1048      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1049      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1050      - carbon: * remove tr1-related adjoint verification
1051                * add ptracer as control variable
1052    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1053      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1054    
1055    checkpoint54f_post
1056    o in verification/carbin/ remove experiment related to
1057      ALLOW_PASSIVE_TRACER (array tr1 etc)
1058      code_ad/ input_ad/ results_ad
1059    
1060    o add two new packages
1061      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1062        + subject to optimization (memory)
1063      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1064        + subject to reordering (many GOTOs in the original code)
1065        + so far opps is called for every (i,j) point, and then operates in
1066          the vertical; one may want to reorder the scheme in order operate in
1067          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1068          fields)
1069    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1070      - all verification tests compile and run with linux_ia32_g77
1071      - defaults are compatible with current input files--nothing
1072        should change if you were not previously using MNC
1073      - MNC output has been added in numerous places (eg. timeave)
1074        but there are still a few writes not yet do-able with MNC
1075        (this is in progress)
1076      - flags now allow for either/or/both use of MDSIO and MNC and
1077        documentation will soon follow
1078      - numerous small formatting cleanups for ProTeX
1079    o add version info (via BUILD_INFO.h) to MNC and stdout
1080    
1081    checkpoint54e_post
1082    o add two new packages
1083      - pp81 (Packanowski and Philander, 1981), Richardson number and
1084        stratification dependent mixing
1085      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1086      - these scheme operate in a similar manner as KPP (without ghat, of
1087        course), however there is only one diffusivity that is used for both
1088        temperature and salinity (and passive tracers)ç
1089    o add offline package
1090    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1091      provided by Stephanie Dutkiewicz
1092    o genmake2: add ability to search for C compilers and cleanup test output
1093      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1094    
1095    checkpoint54d_post
1096    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1097    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1098      leading to additional shift by 5 days each year of integration
1099       (i.e. leading to considerable offset over the years)
1100    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1101    o start with no AB and no initial filtering (staggerTimeStep):
1102      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1103    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1104      (external loading & cpl import/export stay in forward_step.F)
1105    o update coupling interface to work with new staggerTimeStep
1106    o change MDSIO ptracers_pickup.
1107    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1108    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1109    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1110    
1111    checkpoint54c_post
1112    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1113      this affects (truncation error) output.txt of test-exp:
1114       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1115    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1116    o change Qnet to always be the net heat flux, (+upward).
1117      affects (truncation error) output of natl_box exp.: updated
1118    o define the max number of passive tracers in PTRACERS_SIZE.h
1119    o start to test mnc routinely in exp0
1120    o add sea-ice loading (sIceLoad) as a new forcing field.
1121    
1122    checkpoint54b_post
1123    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1124       impressive on Altix and Opteron systems)
1125    o diagnostics can now write NetCDF files through the mnc package
1126    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1127    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1128    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1129      affects (truncation error) output of lab_sea & natl_box exp.: updated
1130    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1131    
1132    checkpoint54a_post
1133    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1134    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1135    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1136    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1137      + internal_wave (shift in writing cg2d_ini_res)
1138    checkpoint54a_pre
1139    
1140    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1141      - modified verification/lab_sea and natl_box_adjoint accordingly
1142    
1143    checkpoint54
1144    checkpoint53g_post
1145    o prepare splitting of thermodynamics: store convect.counter in common block
1146    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1147      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1148    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1149    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1150    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1151    o restore adjointability
1152    
1153    checkpoint53f_post
1154    o modifications that affect AIM experiment results (update output.txt):
1155      - no advection of S at top interface Nr (pkg/generic_advdiff)
1156      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1157    o AIM pkg:
1158      - include stability function into surf.Flux derivative relative to Tsurf
1159      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1160    
1161    checkpoint53e_post
1162    o merged cylindrical coord configuration
1163    o added rotating_tank experiment
1164    checkpoint53e_pre
1165    
1166    checkpoint53d_post
1167    o faulks upgraded: re-generate output.txt that have changed:
1168       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1169    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1170    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1171    o added Sadourny discretization of Coriolis
1172      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1173      - re-enabled use of omega3 (useAbsVorticity)
1174    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1175      vector-invariant equations
1176      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1177    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1178      hopefully without new bugs
1179      - still to do: biharmonic friction for non-hydrostatic w
1180    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1181    o regenerated output for global_ocean_ebm (using -ieee)
1182    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1183      of mom_common/
1184      - simple re-arrangement of instructions within computing loop
1185    checkpoint53d_pre
1186    
1187    checkpoint53c_post
1188    o new version of coupler for AIM+thSIce and Ocean models
1189     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1190     - land: change Evaporation of snow
1191     - aim with thSIce: fix bug in snow-precip.
1192    o changes to calc_gw.F
1193     - bug fix for w^2 term near the bottom boundary
1194     - (hopefully) improve the lateral slip boundary condtions for use with
1195        partial/looped cells
1196      - because the bug fix changes two verification experiments anyway (exp5
1197        and plume on slope), change the lateral boundary condition from half slip
1198        to the value of no_slip_sides
1199    o ebm package wasnt quite up to the parallel task. Fixed that.
1200    o Adjoint of EBM package + verification
1201      * TLM OK
1202      * ADM not sufficient accuracy yet (needs further testing)
1203    
1204    checkpoint53b_post
1205    o Commiting new energy balance model to repository
1206      * package is pkg/ebm
1207      * verif. is verification/global_ocean_ebm
1208      * references are in ebm_driver.F
1209    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1210    C        Global thermohaline circulation. Part I:
1211    C        Sensitivity to atmospheric moisture transport.
1212    C        J. Climate 12(1), 71-82
1213    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1214    C        Global thermohaline circulation. Part II:
1215    C        Sensitivity with interactive transport.
1216    C        J. Climate 12(1), 83-91
1217    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1218    C        Destabilization of the thermohaline circulation
1219    C        by atmospheric eddy transports.
1220    C        J. Climate 7(12), 1870-1882
1221    o Will need long integration testing.
1222    checkpoint53b_pre
1223    
1224    o created pkg/mom_common in preparation for variable viscosity code
1225    o renamed and split ini_mnc_io
1226    o pkg/land: only liquid water can diffuse or run-off
1227    o AIM using land: soil wetness availability account for snow
1228    o added printMapIncludesZeros to EEPARMS namelist
1229    
1230    checkpoint53a_post
1231    o restore TAMC compatiility for exf_constants.h
1232      (no usage of _d in .h)
1233    o Additional storing in KPP in an attempt to fix
1234      TAMC problem with adjoint of KPP code.
1235      (no success...)
1236      Identical code works fine with TAF.
1237    o Fixed verification/natl_box_adjoint experiments.
1238      Initial conditions for Experiments 4 and 5 are now
1239      set to "SEAICE_initialHEFF=0", which is more reasonable,
1240      and hence gives results closer to that of Experiment 2.
1241      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1242    
1243    checkpoint53
1244    o stable checkpoint with up to date adjoint
1245      TLM tests only run for 1st grdchk at the moment. Its unclear if
1246      this is a code problem or a problem with resetting code for g_
1247      variables that is being autogenerated wrong.
1248      Otherwise:
1249       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1250       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1251         are both still in chaos following their security messes.
1252    
1253    checkpoint52n_post
1254    o various build (mostly genmake2) changes including:
1255      - ability to build/run more easily within Cygwin and MacOS X
1256      - more complicated Makefiles with a stronger dependence on Gnu Make
1257    o pkg/seaice modifications
1258      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1259        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1260        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1261      - changed proxy for geostrophic velocity and updated
1262        verification/lab_sea/results/* accordingly
1263      - removed ADI dynamic solver from pkg/seaice
1264      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1265        they caused a segmentation fault under certain circumstances
1266      - removed unused field WATR
1267    o bug fix in exf-package:
1268      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1269         now reflect that.
1270    o small fixes in the cal-package:
1271      - set reference date to first of January for the 'model'-calendar
1272      - failing of cal_CheckDate in cal_FullDate now actually results in a
1273        warning
1274    o small modifications in exf-package to increase flexibility:
1275      - change climtempfreeze from a constant to a runtime parameter that
1276        is specified in data.exf_clim (default = -1.9)
1277      - introduce runtime parameter windstressmax (default = 2.0) that is
1278        specified in data.exf
1279    o fix in pkg/thsice:
1280      - update Evap (Tsf changes) to be consistent with Latent heat flux
1281      - maintain snow precipitation unchanged (even if Tsf >=0).
1282     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1283    
1284    checkpoint52m_post
1285    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1286      this does not change any of the results, because myIter=0 in swfrac always
1287      lead to jwtype=2 (the default anyway), but the call makes little sense
1288      as a default
1289    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1290    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1291      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1292    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1293    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1294    o extending useSingleCpuIO option to work with new exch2 I/O format
1295      - old-style, missing-tile I/O is still accessible by defining CPP
1296        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1297    o monitor package can write to NetCDF files and/or STDOUT
1298    o fix re-definition bug in MNC_GRID_INIT_ALL()
1299    o doc/api_reference added
1300      - a framework for building an API Reference Manual using all
1301        the "protex" comments embedded in the code
1302      - see pkg/generic_advdiff, pkg/mnc for examples
1303    o MNC:
1304      - make myThid the last argument for all subroutines
1305      - new default for the grid files: NO halos
1306      - add useMNC and other run-time flags
1307      - separate per-file-group handling of the unlimited dimension
1308      - early initialization of MNC w/ flags read at the eeboot stage
1309        and lookup tables set in initialize_fixed
1310      - write all MNC output to a freshly-created directory
1311    o thermodynamics sea-ice (thsice) is now tested with testreport.
1312    o test exp. advect_cs: use the standard cs32 grid ; update output.
1313    o Added functionality to grdchk:
1314      pick global i,j,k position (or nearest wet) where to perform check.
1315    
1316    checkpoint52l_post
1317    o new land formulation:
1318      a) use ground enthalpy as prognostic variable to ensure exact
1319         energy conservation.
1320      b) account for water temperature and for latent heat of freezing
1321         in all processes (rain, run-off, ground storage)
1322      c) compute surface and ground temperature implicitly.
1323    o aim_v23 modification for new land model:
1324      a) Treat separately land / ocean / sea-ice surface fluxes
1325         to allow implicit computation of land & sea-ice surface temp.
1326      b) add snow precipitation.
1327    checkpoint52l_pre
1328    
1329    o fix problem (when 1 tile is empty) in min/max monitor.
1330    o fix bug in timeAve (u,vZetatave in common block)
1331    o no restoring terms under ice for pkg/seaice
1332    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1333    o bug fix for pkg/seaice pickups
1334    o change MNC call locations and add coordinate attributes
1335    o mask vorticity at the corner ; affects global_ocean.cs output
1336    o fix ini_curvilinear_grid ; test CS experiments with mpi
1337    o aim.5l_cs: modify sea-ice fraction input file ; update output
1338    o exf: Adding simple range check routine for exf fields after read
1339    
1340    checkpoint52k_post
1341    o removed top-level directory "diags"
1342      - we migrated these functions to pkg/timeave a long time ago
1343    o fixed bug introduced in pkg/monitor
1344    o accuracy ctrlprec = 32 insuffient for gradient checks using
1345      averaged fields (I/O via cost_averages)
1346      -> use ctrl.h in active_file*.F to control I/O precision.
1347    o paramter list of CALL ADTHE_MAIN_LOOP
1348    o added initial do_the_model_io to ecco
1349    o set all ...Freq to zero after cost_final
1350      taveFreq, dumpFreq, pChkptFreq
1351    o MAIN and ECCO differentiability restored
1352    
1353    checkpoint52j_post
1354    o fix nchklev in tamc.h for global_ocean...
1355    o Bringing flow and store directives up-to-date
1356    o Really weird thing!
1357      call do_the_model_io from the_main_loop with parameters
1358      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1359      TAF places a faulty re-call of initialise_varia
1360      after cost_final call which should not be there!
1361    checkpoint52j_pre
1362    
1363    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1364      error messages
1365    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1366    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1367      debug output
1368    o modfied mdsio_writefield.F to handle non-global files under exch2
1369    o update AIM Cubed-Sphere exp (aim.5l_cs):
1370      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1371    o update AIM Equatorial Channel exp:
1372      use standard aim_v23 pkg and change the SST fields to be more realistic.
1373    o globalFile now works with exch2
1374    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1375      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1376    o limit timeave output for hi-res integrations
1377    
1378    checkpoint52i_post
1379    o removed CPP_EEOPTIONS.h from verification/*/code
1380    o updated the tiling for global_ocean_pressure
1381    checkpoint52i_pre
1382    
1383    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1384      the old pkg/aim).
1385    
1386    checkpoint52h_pre
1387    o shortened offending lines in exch2_send_rx?.template
1388    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1389    o genmake2: add build & execute test for NetCDF code
1390    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1391      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1392    o added useSingleCPUIO flag to monitor.F and mon_out.F
1393    o added temporary hack for sea-ice dynamics on the cube:
1394      metric terms are ignored and it is assumed that
1395      there is no sea-ice on cube faces 1, 2, 4, and 5.
1396    
1397    checkpoint52f_post
1398    o added exch2 cube routines to pkg/exch2
1399    o modified hs94.cs-32x32x5 to use it
1400    o added new grid files to hs94.cs-32x32x5
1401    checkpoint52f_pre
1402    
1403    checkpoint52e_post
1404    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1405      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1406    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1407      to work with implicit vertical advection and AB ;
1408    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1409    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1410     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1411    checkpoint52e_pre
1412    
1413    o fix bug in impldiff when Nr=1 or Nr=2.
1414    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1415    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1416    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1417      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1418    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1419    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1420    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1421    
1422    checkpoint52d_post
1423    o re-tiled many expts to allow comparison in multi-processor mode
1424      - updated output accordingly
1425      - changed hs94.128x64x5 to use intial T from file rather than use the
1426        random number generator
1427    o add infrastructure in model routines for fizhi and gridalt packages
1428    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1429    o changes to permit hi-res, cubed-sphere, configuration
1430      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1431      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1432      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1433        of surface winds for the cube
1434      (A verification experiment, based on global_ocean.cs32x15, but with
1435       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1436       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1437       complete with example surface forcing files and matlab scripts to look
1438       at the output and compare it with that of global_ocean.cs32x15.)
1439    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1440       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1441       to conform to the common rule.
1442    o check-in the first version of the coupler + interfaces for multi-components
1443       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1444       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1445       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1446       - ocean and atmos. share the same horizontal grid (no interpolation).
1447       - exchanges between component and coupler is done in forward_step
1448    o new verification experiment, cpl_aim+ocn:
1449       coupled ocean - AIM atmosphere on cs32 grid.
1450    
1451    checkpoint52d_pre
1452    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1453    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1454    
1455    checkpoint52c_post
1456    o Fixing OPTIONS files for use of exf:
1457      - ALLOW_ECCO not needed
1458      - ECCO_CPPOPTIONS.h should not be included from
1459        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1460        as has been the case in the past
1461      - All cal/exf related options are currently set in
1462        single header file. Should remain so until we
1463        agree on a consistent new policy.
1464    o Removed all CPP options for cal package.
1465      cal has no more CPP options.
1466    o modified STOREs in GAD_ADVECTION
1467    o corrected key comp. for passkey
1468    
1469    checkpoint52b_post
1470    o new version: "thsice" of thermodynamic sea-ice pkg:
1471     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1472     - modify fluxes but do not change theta directly;
1473     - light cleaning of bulk_force pkg (still needed with thsice).
1474     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1475       + output_thsice.txt to test thsice & bulk_force pkgs.
1476    o put back grid & coriolis monitor output.
1477    checkpoint52b_pre
1478    
1479    o call "do_the_model_io" at the beginning (=> dump initial state)
1480    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1481    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1482      (need info on NUMBER_OF_PTRACERS)
1483    o missing PTRACERS headers in some routines
1484    o default tamc.h in pkg/autodiff supposed to crash
1485      to ensure proper customization
1486    
1487    checkpoint52a_post
1488    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1489      - moved surfaceTendencyTice from pkg/seaice to main code
1490      - subroutine FREEZE_SURFACE now limits only surface temperature
1491        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1492        => new output.txt for global_ocean.cs32x15 & global_with_exf
1493      - keep the old version of FREEZE for backward compatibility;
1494        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1495      - corresponding modifs for TAF directives
1496    o added surface flux output variables to TIMEAVE_STATVARS
1497    o time-averaged output for pkg/ptracers
1498    o fix problem with ECCO-related divided adjoint
1499      snapshot file was missing some ad-variables,
1500      but no warning issued by TAF
1501    
1502    checkpoint52a_pre
1503    o some bug fixes for #undef REAL4_IS_SLOW
1504    
1505    checkpoint52 = ecco_c52_e35
1506    o after testing adjoints of checkpoint51u_post
1507    
1508    checkpoint51u_post
1509    o this is the post-merge tag of the ecco-branch
1510      (needs another clean checkout and re-testing)
1511    o various natl_box_adjoint configs and results
1512      but no input fields
1513    o obcs adjoint not yet merged!
1514    o adding ECCO global 1x1 and 2x2 degree configs
1515    o updated/extended some store directives for seaice
1516    o pkg/ecco now containes ecco-specific part of cost function
1517    o top level routines the_main_loop, forward_step
1518      supersede those in model/src/
1519      previous input data.cost now in data.ecco
1520      (new namelist ecco_cost_nml)
1521    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1522    
1523    checkpoint51t_post
1524    o this is the pre-merge tag of the ecco-branch
1525    
1526    checkpoint51s_post
1527    o cleanup: removed various obsolete #define-s
1528    o pkg/grdchk
1529      - renamed 'ph-grd 3' to 'grad-res'
1530      - merged from ecco-branch
1531        (remaining bug fixes for obcs gradient checks)
1532      - additional high-precision output for testreport
1533        (grep for 'precision_grdchk_result')
1534    
1535    checkpoint51r_post
1536    o cleaned up or removed CPP_OPTIONS.h files
1537    o updated results for some of the tests to reflect the new
1538      optfiles (-ieee: -O0 instead of -O3)
1539    
1540    checkpoint51q_post
1541    o cd_code:
1542      - moved cd_scheme.F -> cd_code_scheme.F
1543      - separate read_checkpoint from cd_code_ini_vars.F
1544      - separated cd_code part from write_checkpoint
1545      - updated AD_SOURCE, generated .flow
1546      - added CD_CODE_VARS.h to the_main_loop
1547      - Moving cd_code specific store dir.s to pkg/cd_code
1548    o ctrl package totally restructured
1549      - pack/unpack now optional and decoupled from
1550        xx_/adxx_ I/O
1551      - ctrl_pack/unpack cleaned
1552        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1553      - confined inclusion of AD_CONFIG.h to where necessary.
1554    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1555    
1556    checkpoint51p_post
1557    o create initial cd_code package
1558      - WARNING: the initialization of fields within packages
1559        is broken because INI_FIELDS (where READ_CHECKPOINT is
1560        called) is called *before* PACKAGES_INIT_VARIABLES.
1561        This seems to be backwards since
1562        1) its important to initially zero the entire field including
1563           the "halo" region
1564        2) zeroing needs to be done *before* reading pickup info
1565           and the pickup call might or might not happen in any
1566           particular run
1567      - this needs an overhaul for R2
1568    o cleanup verification/*/code/GMREDI_OPTIONS.h
1569    o cleanup testreport
1570    
1571    checkpoint51o_post
1572    o bringing AD-related verif's up to date with genmake2
1573      - carbon/
1574      - global_ocean.90x40x15/
1575      - hs.94.1x64x5/
1576      - (front_relax/ )
1577    o (more) consistent directory structure for AD-related verif.'s
1578    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1579    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1580    o bug fix in find_alpha.F for MDJWF:
1581      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1582        change rho -> rho-rhoConst
1583      - replace call find_rho to find_rhonum
1584    o initialisation of rFlx extended to full array (required by TAF)
1585      and shifted to thermodynamics
1586    o removed PTRACERS.h in ptracers routine
1587    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1588    o Correcting initialisations for fVerU, fVerV.
1589    o helping TAF to recognize dependency on kUp for
1590      fVerU, fVerV
1591    o Replacing delZ by delR in pkg/ctrl/
1592    checkpoint51o_pre
1593    
1594    o undid all of cp51 pending some cleanups and discussion
1595    o added the [#include "AD_CONFIG.h"] statement to all files that need
1596       it for adjoint/tl #defines
1597     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1598     o removed tools/genmake since it no longer works
1599    
1600    checkpoint51n_post
1601    o modifications to make FREEZE flux visible to pkg/kpp
1602      - moved surfaceTendencyTice from pkg/seaice to main code
1603      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1604      - subroutine FREEZE now limits only surface temperature
1605        (this means new output.txt for global_ocean.90x40x15,
1606         global_ocean.cs32x15, and global_with_exf)
1607    o added surface flux output variables to TIMEAVE_STATVARS
1608    
1609    checkpoint51n_pre
1610    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1611    o added [#include "AD_CONFIG.h"] to all files that use the following
1612      defines:
1613      - ALLOW_ADJOINT_RUN
1614      - ALLOW_TANGENTLINEAR_RUN
1615      - ALLOW_ECCO_OPTIMIZATION
1616    
1617    checkpoint51m_post
1618    o incorporating changes to get TAMC/TAF working in genmake2
1619      - added new TAMC/TAF targets to the Makefile
1620      - various cleanups related to package handling
1621      - these changes should have no impact on the forward model
1622    
1623    checkpoint51l_post
1624    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1625     - faster algorithm for cal_addtime.F
1626     - higher precision arithmetic, where needed
1627     - pkg/exf *startdate variables changed from calendar date to
1628       model integration time
1629    
1630    checkpoint51l_pre
1631    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1632    o enable to apply restoring on S & T only in a latitude band.
1633    o update output (external_forcing_surf modif. change truncation errors)
1634       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1635    
1636    checkpoint51k_post
1637    o change default to: useNHMTerms=.FALSE.
1638     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1639       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1640     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1641        exp1, ideal_2D_oce
1642     - change data file of oceanic exp (leave the results unchanged for now)
1643       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1644    o set gravitySign automatically according to the vertical coordinate used
1645      (and change sign: back to "logical" value: +1 when R increases downward)
1646    o added an include barrier to the default CPP_OPTIONS.h and
1647      removed the #include "PACKAGES_CONFIG.h" from it
1648    o fix a bug in mom_fluxform (from chk51j_post)
1649    
1650    checkpoint51j_post
1651    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1652    o adjusted some flow directives (dynamics, thermodynamics)
1653    o added cubed-sphere case to test cost function
1654    o heckpoint_lev?_directives.h now include
1655      pkg-specific directives, whenever those are enabled.
1656    o Moving pkg-specific flow directives to corresponding pkg
1657      Moving pkg-specific differentiation list to corresponding pkg
1658      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1659      ---> conventions are
1660           - pkg_ad.flow
1661           - pkg_ad_diff.list
1662           - pkg_ad_check_lev?_dir.h
1663    
1664    checkpoint51i_post
1665    o merge of the branch-genmake2
1666      - knowingly breaks the older genmake
1667      - automatic generation of all ALLOW_${PKG_NAME} defines
1668      - new testreport supersedes older testscript
1669    o large number of package inclusion and header cleanups
1670    checkpoint51i_pre
1671    
1672    o new output for adjoin of global ocean vector invariant
1673    o fix for checkpoint of thermodynamic seaice and bulk_force
1674    o Steph gchem various cleanups
1675    
1676    checkpoint 51h_pre
1677    o fixed some single quotes
1678    o modify gchem pkg to be more versatile
1679    o modifications to clean up dic pkg
1680    o add pkg/cfc
1681    
1682    checkpoint51g_post
1683    o provide links for ARPACK and ADM*TLM
1684    o start removing verification/vero/
1685    o update AD-related stuff
1686      (in particular some IF-statements in model/src/ routines)
1687    o adding to verification/global_ocean.90x40x15/ adjoint of
1688      vector invariant setup
1689    
1690    checkpoint51f_post
1691    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1692    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1693      of tracer Green's fucntions for ocean inversion project.
1694    
1695    checkpoint51f_pre
1696    o Added on-the-fly spatial interpolation capability
1697        "USE_EXF_INTERPOLATION" to pkg/exf.
1698      - This is a temporary Cartesian-grid hack until
1699        the super-duper ESMF coupler becomes available.
1700      - See verification/global_with_exf/README for usage example.
1701      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1702        flags and modified pkg/seaice accordingly.
1703    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1704        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1705        non-local transport term.
1706    
1707    checkpoint51e_post
1708    o pkg/mom_vecinv:
1709      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1710      - add time-ave diagnostic of vorticity advection.
1711    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1712    o atmospheric geopotential: - include water vapor effect;
1713                                - use p^kappa in p* scaling.
1714    o land pkg: read initial state from files.
1715    o AIM : add stratospheric drag in the upper level
1716    
1717    checkpoint51d_post
1718    o change function ILNBLNK (=> last non-blank char.) to return zero
1719      (instead of the string length) when the string. char is empty
1720    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1721    o modif's to restore TAMC compatibility
1722      - avoid "_d" constructs in PARAMETER declarations
1723      - avoid interrupting lines by comment lines
1724    o Use cluster local disks for purely local I/O
1725      vs. globally visible disks needed for ctrl stuff
1726      (merged from ecco-branch)
1727      - new active_file_loc... and mdsio_..._loc routines
1728      - affected packages: autodiff, ctrl, grdchk, mdsio
1729    
1730    checkpoint51c_post
1731    o introducing integer flag debugLevel
1732      - debLevZero: suppress all output
1733      - debLevA: standard
1734      - debLevB: equivalent to current debugMode=.TRUE.
1735    o introducing pathname variable mdsioLocalDir for mdsio
1736      that can be specified at runtime
1737      (relevant for cluster I/O to local disk)
1738    `
1739    >>>checkpoint51b_post
1740    adjoint of ptracers
1741    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1742    o extended state in checkpoint_lev?, etc.
1743    o alternative ctrl/cost with tr1 or ptracer
1744    o new comlev1_bibj_ptracers
1745    o new ptracers.flow
1746    o made ptracers_forcing same as external_forcing_s
1747    o added verification for adjoint with ptracers
1748      - adm. grdchk fail so far
1749      - tlm. grdchk OK
1750      - checked tapelev/comlev recomputations: OK
1751    <<<checkpoint51b_pre
1752    
1753    checkpoint51a_post
1754    o added code for biogeochemistry package
1755      - new pkgs: dic, gchem
1756      - new subroutine in ptracers
1757    o modify code for biogeo packages
1758      - in model/src and pkg/ptracers
1759    
1760    checkpoint51
1761    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1762      - autodiff, ctrl, exf, grdchk, seaice
1763      kept separate packages
1764      - cost, ecco, obcs
1765    o updating verification/internal_wave, verification/lab_sea
1766      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1767    
1768    checkpoint50i_post
1769    o Preparing next differentiable checkpoint and sync
1770      of MAIN vs. ecco-branch
1771      - 1st step: this one is differentiable
1772      - 2nd step: next(! not this) checkpoint will have updated packages
1773                  from ecco-branch)
1774    
1775    checkpoint50h_post
1776    o new package "land": provide surface BC for AIM.
1777    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1778    o AIM: use true log-P extrapolation for near surface temp (= as in
1779        F.Molteni paper) ; update aim.5l_cs output.
1780    o New variable in PARM03 for more flexible pickups
1781    o somewhat cleaned package initialisation sequence for
1782      ctrl/ cost/ ecco/ in packages_... routines
1783    
1784    checkpoint50g_post
1785    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1786      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1787      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1788        made the default because of faster convergence than ADI
1789    
1790    checkpoint50f_post
1791    o exf totally restructured
1792      - replaced all exf_set_ routines by one generic exf_set_gen.F
1793        and made sure it's still differentiable
1794      - split exf_getffields.F into new exf_bulkformulae.F
1795      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1796      - updated adjoint/makefile and relevant verif. accordingly
1797    
1798    checkpoint50f_pre
1799     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1800          + change Evap over land. (update aim.5l_cs output)
1801     o added missing .cvsignores and made uniform across expts
1802     o changed configuration of tidal_basin_2d expt
1803     o added pkg/debug functions for tracing code in fatal crashes
1804     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1805     o new fn in pkg/monitor to stop model if solution grows too big
1806     o removed lots of single quotes from comments
1807    
1808    checkpoint50e_post
1809    o make KPP work with PTRACERS
1810     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1811       nearly a copy of kpp_transport_s
1812     - there is no analogue to SurfaceTendencyS, so I have to use
1813       gPtr(of the surface layer) instead
1814    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1815    checkpoint50e_pre
1816    
1817    checkpoint50d_post
1818    o change kpp output from multiple-record state files to single-record state
1819      files analogous to write_state.F
1820    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1821      analogous to the cg2d-related output.
1822    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1823      so that writing to internal file fn (with length 512) fails.
1824    checkpoint50d_pre
1825    
1826    checkpoint50c_post
1827    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1828    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1829    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1830    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1831    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1832    
1833    checkpoint50c_pre
1834    Merging from release1_p13:
1835    o bug fix for pkg/seaice dynamic solver
1836    o Added SEAICE_initialHEFF to pkg/seaice
1837    
1838    checkpoint50b_post
1839    o store u*,v* in gU,V instead of in guNm1,gvNm1
1840    o in order to put the momForcing out of the Adams-Bashforth:
1841      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1842      to timestep.F
1843    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1844    o re-generate output for highly sensitive test-exp:
1845       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1846    
1847    checkpoint50b_pre
1848    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1849    o corrected CPP option mismatch in exf_Bulk... functions for case
1850      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1851    
1852    checkpoint50a_post
1853    o Bug fix for merging between c50 and KPP.
1854      ikey was passed from thermodynamics to kpp_calc via
1855      common block rather than being recomputed in kpp_calc,
1856      in contradiction with new key itdkey.
1857      New key ikppkey created, and tamc.h headers updated.
1858    
1859    checkpoint50
1860    - 2nd step of merge with ecco-branch:
1861      merge changes in ecco-branch back into main trunk
1862    - bug fix in find_alpha
1863    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1864    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1865    - merged some sliced AD support routines
1866    
1867    checkpoint49
1868    merged from ecco-branch:
1869    o exf:
1870      - Enable initialisation of forcing fields to constant
1871        (runtime) values.
1872      - in exf_getffields.F
1873        Reduce i-/j-loop to interior domain, discarding overlaps.
1874        That also fixes wrong TAF-key computations for key_1, key_2
1875        with bulf formulae.
1876      - exf_init.F modify #ifdef for exf_init_evap
1877      - exf_getffieldrec.F, ctrl_getrec.F
1878        The following INT-usages are not safe:
1879          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1880          fldcount = int(fldsecs/fldperiod) + 1
1881        and were modified.
1882    o autodiff: checkpoint_lev...
1883      - updated storing for bulk formulae (some arrays were missing)
1884      - added state for seaice package
1885      - synchronized with main branch
1886    o DIVA:
1887      Modif.s in
1888      - the_main_loop.F
1889      - the_model_main.F
1890      and added cost_final_restore.F cost_final_store.F
1891      o With these changes, it is possible to fully separate
1892        the first forward run to compute the cost function (mdthe_main_loop)
1893        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1894        into separate model executions.
1895        This enables better tuning of DIVA to given queue sizes.
1896      o Loss of cost function value in consecutive DIVA runs is
1897        fixed by storing to 'costfinal' file.
1898      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1899        beginning/end of adjoint integration is accounted for.
1900      The current changes apply to TAF-1.4.26.
1901      TAF has one remaining bug, requiring one manual change
1902      (see MITgcm manual).
1903    o cal: synchronized between MAIN and ecco-branch
1904    
1905    checkpoint48i_post
1906    o Changes to restore differentiability of code w.r.t. previous tag
1907      (mostly adding new routines to make list and replacing
1908      pressure by totPhiHyd).
1909    o Updated and merged grdchk package
1910      - has both ADM and TLM checks
1911      - works for single- and multi-proc.
1912      - output cleaned
1913      - worked successfully for parallel DIVA
1914    o genmake:
1915      - Adding -platform=SP4
1916      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1917    o Modif. for DIVA:
1918      ctrl_unpack should not be called in intermediate DIVA interval.
1919      (similar thing would apply for active files such as
1920      tbar, sbar, psbar, which should not be reinitialised;
1921      only relevant for ecco-branch)
1922    
1923    checkpoint48h_post
1924    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1925    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1926    o Added SEAICE_initialHEFF to pkg/seaice
1927    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1928    
1929    checkpoint48g_post
1930    --- EOS:
1931    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1932      store total Potential in totPhyHyd for diagnostics & EOS.
1933    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1934    --- Pressure/geopotential gradient:
1935    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1936    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1937      ( changes results of global_ocean_pressure )
1938    o NLFS + z-coord.: add eta*Rho' contribution.
1939    o accurate phiHyd when using interface-W at the middle between 2 centers
1940     ( changes results of ideal_2D_oce )
1941    o includes r* 2nd term in potential gradient.
1942    
1943    checkpoint48f_post
1944    Merging from release1_p12:
1945    o Modifications for using pkg/exf with pkg/seaice
1946      - improved description of the various forcing configurations
1947      - added basic radiation bulk formulae to pkg/exf
1948      - units/sign fix for evap computation in exf_getffields.F
1949      - updated verification/global_with_exf/results/output.txt
1950    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1951      (SBO) core products, including oceanic mass, center-of-mass,
1952      angular, and bottom pressure (see pkg/sbo/README.sbo).
1953    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1954      to avoid negative values in shallow regions.
1955      - updated verification/natl_box/results/output.txt
1956      - updated verification/lab_sea/results/output.txt
1957    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1958    o Added useSingleCpuIO option (see PARAMS.h).
1959    o Updated useSingleCpuIO option in mdsio_writefield.F to
1960      work with multi-field files, e.g., for single-file pickup.
1961    o pkg/seaice:
1962      - bug fix in growth.F: QNET for no shortwave case
1963      - added HeffFile for specifying initial sea-ice thickness
1964      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1965    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1966      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1967    o pkg/seaice:
1968      - adjoint-friendly modifications
1969      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1970    
1971    checkpoint48e_post
1972    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1973    o dynamics: change definition of computational domain & adapt mom_fluxform
1974      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1975    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1976        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1977        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1978        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1979        inverted_barometer solid-body.cs-32x32x1
1980      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1981    
1982    checkpoint48d_post
1983    o in preparation for r*:
1984     a) use pre-computed gradient of hydrostatic potential:
1985        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1986     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1987        => affects results of glob_oce_pressure (different truncation error)  
1988      update output.txt of ideal_2D_oce & global_ocean_pressure
1989    
1990    checkpoint48d_pre
1991    o in preparation for r*:
1992      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1993      pass the 2 comp. of the grad. as arguments to momentum S/R.
1994      but for the moment, only used if it does not change the results.
1995    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1996    
1997    checkpoint48c_post
1998    Modifications in treatment of initial flux forcing controls
1999    to avoid extra storing of flux fields.
2000    
2001    checkpoint48c_pre
2002    o Added tidal_basin_2d experiment (currently 1D!)
2003    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2004    
2005    checkpoint48b_post
2006    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2007     (modification to pressure gradient not yet implemented)
2008    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2009      (for U & V) that are used for vertical advection of momentum.
2010    
2011    checkpoint48a_post
2012    o In preparation for r*, use temp. array to compute vertical transport
2013       in flux-form momentum pkg. => change results of few test-exp.
2014      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2015                        lab_sea, natl_box & plume_on_slope
2016    
2017    checkpoint48
2018    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2019    
2020    checkpoint47j_post
2021    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2022    o moved adexch from forward_step to addummy_in_stepping
2023    o added exch in ctrl_map_...
2024    o aveFreq.=0. at end of cost_final to avoid overwrite in
2025      reverse checkpointing loop
2026    o Yet more changes in gmredi:
2027      * adgmredi_calc_tensor
2028        avoiding all recomputation of gmredi_slope_limit
2029      * adgmredi_x/y/rtransport
2030        added flag for excessive storing to avoid recomp. of
2031        u/v/rtans, dTdx/y/z
2032        -> this is not really necessary and very memory-consuming
2033      * adgmredi_slope_psi:
2034        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2035      * gmredi_slope_limit
2036        re-activated full calculation of taperfct for case 'ac02'
2037    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2038    
2039    checkpoint47i_post
2040    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2041    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2042      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2043    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2044    o gmredi: fix few bugs.
2045    
2046    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2047    This will be a good checkpoint to plug into the ecco-branch.
2048    o few modif.'s to get latest version adjointed
2049      (mainly kick out code in ini_linear_phisurf)
2050    o modif's to run adjoint with exactConserv
2051    o case GM_BOLUS_ADVEC should be cleaned
2052      S/R gmredi_slope_psi should be cleaned
2053    o verification/carbon now has exactConserv=.TRUE.
2054    
2055    checkpoint47g_post
2056    o time-average AIM output: becomes independent from statvars time-average
2057      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2058    o After TAF bug fix:
2059      Tested adjoint of gmredi package.
2060      Tests were done with checkpoint47 rather than with latest
2061      checkpoint47f_post since the latter is broken for the adjoint
2062      verification/carbon/ contains both ADM and TLM gradient checks.
2063    Here they are, before they get changed/lost/stolen.
2064    Mostly modif.'s to fix numerical sensitivities.
2065    Gradient checks OK for
2066    - GM_taper_scheme:
2067      * clipping
2068      * ac02
2069      * linear
2070      * glw91
2071      * dm95
2072      * ldd97
2073    - GMREDI_OPTIONS:
2074      * GM_VISBECK_VARIABLE_K
2075      * GM_NON_UNITY_DIAGONAL
2076      * GM_EXTRA_DIAGONAL
2077      * GM_BOLUS_ADVEC
2078    in conjunction with data.gmredi parameters to be checked in
2079    in a few minutes under verification/carbon/code/
2080    
2081    checkpoint47f_post
2082    Merging from release1_p10:
2083    o modifications for using pkg/exf with pkg/seaice
2084      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2085        and SEAICE_EXTERNAL_FLUXES
2086      - pkg/exf CPP options EXF_READ_EVAP and
2087        EXF_NO_BULK_COMPUTATIONS
2088      - usage examples are Experiments 8 and 9 in
2089        verification/lab_sea/README
2090      - verification/lab_sea default experiment now uses
2091        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2092    
2093    checkpoint47e_post
2094    o created a tag prior to creating a branch
2095    
2096    checkpoint47d_post
2097    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2098      at the bottom boundary had an erroneous half slip boundary condition
2099    o added bottom drag and no slip boundary condition capabilities to
2100      oceanic pressure coordinates code
2101    o added new verification experiment global_ocean_pressure, this experiment is
2102      also described in the tutorial section of the manual
2103    checkpoint47d_pre
2104    
2105    checkpoint47c_post
2106    o Added a verification experiment for a global cubed-sphere ocean run
2107      -  verification/global_ocean.cubed32x32x30
2108      -  uses pkg/therm_seaice and pkg/bulk_forcing
2109    
2110    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2111    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2112      when using P-coordinate; only implemented for atmospheric config.
2113    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2114      NOTES: requires option NONLIN_FRSURF to be "#define".
2115    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2116    
2117    checkpoint47b_post
2118    Merging from release1_p9:
2119    o pkg/seaice
2120      - removed GOTO's and added taf directives
2121      - double precision constants to reduce the g77 (Linux)
2122        to F77 (SGI) differences reported in release1_p8
2123    o tools/genmake
2124      - added SGI options
2125    o verification/testscript
2126      - updated to that of checkpoint47a_post
2127    o verification/global_ocean.90x40x15/input/eedata
2128      - modified for SGI f77 compatibility
2129    o verification/lab_sea
2130      - added description of sea-ice model
2131      - added missing matlab routines
2132      - added test of thermodynamics parallelization
2133    
2134    checkpoint47a_post
2135    o new pkg: aim_v23
2136     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2137       for now, keep the same surface forcing as before.
2138     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2139     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2140     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2141    o add diagnostic of surface correction term in monitor output
2142    
2143    o bulk_force and therm_seaice
2144    - Two packages:  bulk_force (Bulk forcing)
2145      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2146    - Earlier integration from Stephaine Dutkiewicz
2147      and Patrick Heimbach.
2148    - Two ifdef statements for compile time,
2149       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2150    
2151    checkpoint47
2152    differentiable version of checkpoint46n_post
2153    o bug fix in quasihydrostaticterms
2154    o * "clean" adjoint code (in terms of extensive recomputations)
2155        can now be obtained for all GMREDI options (i.e. for
2156        - GM_VISBECK_VARIABLE_K
2157        - GM_NON_UNITY_DIAGONAL
2158        - GM_EXTRA_DIAGONAL
2159        - GM_BOLUS_ADVEC )
2160      * However, wrong gradient check problem remains unsolved.
2161      * New CPP options have been introduced for different
2162        tapering schemes
2163    o external_fields_load now part of differentiation list
2164    o pressure needs multiple storing;
2165      would be nice to have store_pressure at beginning or
2166      end of forward_step, e.g. by having phiHyd global (5-dim.)
2167      (NB: pressure is needed for certain cases in find_rho,
2168      which is also invoked through convective_adjustment).
2169    o recomputations in find_rho for cases
2170     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2171    o #define ATMOSPHERIC_LOADING should be differentiable
2172    o ini_forcing shifted to begining of initialise_varia
2173    o Incorporating QNVS line search routines into MITgcm
2174      (this is separate code, and therefore not under pkg)
2175      lsopt/, optim/
2176    o Updated verification/carbon/
2177      - #define GM_VISBECK_VARIABLE_K
2178      - GM_taper_scheme    = 'ldd97'    
2179    
2180    checkpoint46n_post
2181    Merging from release1_p8:
2182    o verification/natl_box:
2183      updating new external_fields_load routine
2184    o New package: pkg/seaice
2185      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2186      The sea-ice code is based on Hibler (1979-1980).
2187      Two sea-ice dynamic solvers, ADI and LSR, are included.
2188      In addition to computing prognostic sea-ice variables and diagnosing
2189      the forcing/external data fields that drive the ocean model,
2190      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2191      The implied surface heat flux is then stored in variable
2192      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2193      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2194      non-local transport term.  Because this call precedes model
2195      thermodynamics, temperature under sea-ice may not be "exactly" at
2196      the freezing point by the time theta is dumped or time-averaged.
2197      N.B.: fairly large differences in accuracy occur across
2198            different platforms/compilers; comparison between
2199            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2200            generated output gives:
2201       T           S           U           V
2202      C D M    c        m  s        m  s        m  s        m  s
2203      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2204      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2205      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2206    
2207      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2208    o GAD:
2209      - generated new common blocks to account for call of
2210        same gad routines with differing traceridentities
2211        (needed to modify tracerIdentity indices in GAD.h)
2212      - generated separate common blocks for case useCubedSphereExchange
2213        (Department of Futurology)
2214      - parameter lists to gmredi_?transport: added tracerIdentity
2215      - added new key indices to tamc.h
2216    o external_fields_load:
2217      - added this routine to TAF list
2218      - needed to make some common blocks global and additional storing
2219        along the same lines as exf package (checkpoint_lev?_directives.h)
2220    o exf:
2221      updated external forcing package
2222      - bug fixes carried over from ecco-branch
2223        (missing OBCS_OPTIONS.h in two routines)
2224      - enable easy to use "no forcing".
2225      - added exf I/O for atmospheric loading
2226      - added exf I/O for runoff data
2227      - transfered scaling between exf <-> MITgcm to exf namelist
2228    o Adding new verification experiment global_with_exf.
2229      This verification experiment is almost identical to the
2230      global_ocean.90x40x15 experiment, except that it uses
2231      the exf (and cal) package instead of the
2232      external_fields_load routine (cf README file).
2233    
2234    checkpoint46m_post
2235    o modified testscript to return -- when there are no lines of "%MON" output
2236    o added new flag "quasiHydrostatic" for QH mode
2237      and new routine quasihydrostaticterms()
2238    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2239      New routine: mom_u_coriolis_nh()
2240    o fixed sign of non-hydrostatic metric terms in u and v equations.
2241      Depend on correct sign of gravitySign.
2242    o added work.pc* to .cvsignore in aim directories using ifc
2243    o introduced flag for controllin non-hydrostatic metric terms
2244  o removed gravitySign from PARM04  o removed gravitySign from PARM04
2245  o switched to g77/ifc from pgf77 in aim experiments  o switched to g77/ifc from pgf77 in aim experiments
2246    

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