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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.645 by heimbach, Tue Apr 4 14:59:10 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 ptracers adjoint:
8      * avoid extensive recomputatations
9      * fix missing re-init. of gptr (missed by TAF)
10    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
11      me to turn off the excessive output to STDOUT that this package produces
12    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
13      and add those terms in Vector-Invariant formulation.
14    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
15      if the control period (xx_hfluxperiod etc) is 0
16    o in profiles pkg, clean routines and fix details
17    o in ecco pkg, reading ssh data:
18      fix problem in case the model does not start at iter0=0
19    o fix mnc-pickup/restart for ptracers
20    o new package prifiles:
21      code to compute profile-based cost by Gael Forget
22      (modifs in ecco, ctrl, autodiff)
23    o Benign bug fix in initialization (spotted by M. Mazloff) of
24      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
25    
26    checkpoint58c_post
27    o adjoint: finish NLFS adjoint and provide reference output in
28      verification/global_ocean.90x40x15/results_ad_nlfs
29    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
30      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
31      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
32      with SEAICE_CGRID defined.
33    o move calendarDumps from "data" to "data.cal" and clean-up the code
34      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
35    o add useEXF & useCAL flags (for now, set in hard-coded way)
36    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
37      (were missing in NH mode, and wrong in quasihydrostatic mode).
38      waiting for Chris updated version of calc_gw to add those CALLs.
39    o fix bug in quasihydrostatic S/R ;
40      add a test for this option: global_ocean.90x40x15.qshyd
41    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
42      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
43    o add on/off flag useOffLine for package OFFLINE
44    o seaice:
45      - modify advection so that it works also on the C-grid
46      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
47        problem in multi-tile runs with C-grid
48      - add flags for clipping ice velocities and/or masking solver forcing
49      - fix drag (ocean on ice) formulation and a bug that caused noise in the
50        C-grid solver
51      - added a few comments to seaice_diffusion.F
52      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
53        are now exclusive)
54      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
55        required re-ordering the code a little:
56       + make DAIRN global variable (defined in SEAICE)
57       + move computation of the viscosities eta and zeta into a new separate
58         routine (because I need to recompute them in seaice_ocean_stress.F)
59    
60    checkpoint58b_post
61    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
62      update output.txt of exp. aim.5l_cs.thSI
63    o various mnc cleanups and improvements:
64      + shrink lookup tables by factor of ~4
65      + better error reporting when running out of lookup space
66      + able to handle longer path/file names (up to 500 chars)
67    o adjoint:
68      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
69      - TBD: "hidden" mom_vecinv recomp. in dynamics
70    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
71     (allow to differentiate between forcing components using new integer flags:
72      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
73     and add new flag to put Dissipation tendency out of Adams-Bashforth.
74    o ecco
75      - enable trend removal from SSH anomaly obs.
76    o adjoint
77      - a fix for PmEpR when #undef EXACT_CONSERV
78      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
79      - try to fix "hidden" recomp. in forward_step for NLFS
80        (NLFS seems broken sometimes after I checked it in)
81    o seaice:
82     - add c-grid version of the dynamic solver:
83       + three new routines that are the c-grid substitute lsr, dynsolver
84         and ostres
85       + put a few fields that were local to dynsolver into global common
86         blocks, so that I can move the computation of stresses etc into
87         seaice_lsr (saves coding but may break the adjoint).
88     - replace more hardwired parameters by runtime parameters
89     - add ice masks that mask the rhs of the implicit solvers where there
90       is no ice (commented out in seaice_dynsolver, because i am not sure
91       if this works properly), eventually this should replace the clipping
92       of ice velocities in seaice_dynsolver to +/-40cm/s.
93    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
94      include it only where its needed
95    o move balancing of fluxes before the call of external_forcing_surf
96    o seaice:
97      - correct units of turning angles (now they are really in degrees)
98      - move computation of GWATX/Y out of main routine into dynsolver
99      - initialize GWATX/Y in seaice_init
100    o Apply mask on Fresh-Water flux (needed for SSH forcing).
101      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
102    o seaice: add runtime flags for turning angles (default to zero)
103    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
104      and trend from exf forcing and ctrl control adjustments
105    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
106      (since checkpoint57x_post)
107    o change the default rotation period to 86164.s = the Earth rotation
108    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
109      and based on a reference stratification. Tested within hs94.cs-32x32x5.
110    o seaice advection: add code for choosing between the default (2nd order
111      central differences) and multiDim advection schemes provided by
112      pkg/generic_advdiff
113    o seaice:
114      - removed all references to SEAICE_GRID.h fields from
115        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
116        (cubed-sphere configuration will change a little)
117      - grid computations in seaice_init are obsolete now.
118      - cleaned up code a little so that is easier to read (hopefully).
119      - added new (better?) discretizations of default advection and diffusion
120        (turn on with SEAICEuseFluxForm)
121      - replace 1 in 3d global fields by kSurface in growth.F
122      
123    checkpoint58a_post
124    o seaice:
125      - bug fix in advect.F
126    o shelfice:
127      - separate shelfice load anomaly from pload (breaks with time
128        dependent forcing), => introduce constant field shelficeLoadAnomaly.
129        Its default is 0., but it may be computed more cleverly from (unknown)
130        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
131        done offline. A good approximation of the pressure load anomaly is
132        necessary to avoid large initial adjustment processes underneath
133        deep-reaching shelfice.
134      - small fix in ISOMIP shelfice_thermodynamics
135      - add more sophisticated thermodynamics of Hellmer (1989), this is
136        now the default
137      - give a few constants more intuitive names
138    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
139      if bulk formulae are used in long integration (especially EmPmR). Turn
140      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
141      if balancePrintMean, the imbalance that is substracted is printed to
142      STDOUT.
143    o fix bug (typo) in obcs_apply_eta.F
144    o add a new package shelfice which enables us to model the circulation
145      underneath shelf-ice with draughts of hundreds of meters.
146     - works
147     - to do: + include improved thermodynamics
148              + check whether kSurfC (from model/inc/SURFACE.h) can be used
149                instead of new field kTopC
150              + can we use topoFile, Ro_surf and existing code in ini_depth.F
151                instead of new field R_shelfIce and new code in ini_depth.F
152                and ini_mask_etc.F?
153              + adjust vertical mixing schemes?
154    o seaice pkg:
155     - add a cpp-flag to include a simple formula for a salinity dependent
156       freezing point of sea water at the surface
157     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
158       meridional stresses are now different (and hopefully correct)
159    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
160       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
161       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
162    o pkg/diagnostics: add options and parameters for regional-statistics
163       diagnostics ; define regions by reading a region-mask from a file
164       (might add other options later)
165    o pkg/bulk_force:
166     - add option and parameters to use AIM surface-flux formulae.
167     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
168       others forcing fields (defined in PARM05, parameter file "data") are loaded
169       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
170     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
171     - use the right EXCH call for uwind,vwind (to work on CS-grid).
172     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
173       and parameters (note: calcWindStress replaces .NOT.readwindstress).
174     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
175    
176    checkpoint58
177    o add "--embed-source" option to genmake2 which, when the supporting
178      tools can be compiled (as determined by genmake2) will turn on the
179      embed_files package which then embeds the entire MITgcm source code
180      (*.[fFhc] + Makefile) used for the build within the executable
181      - requested by CNH but off by default
182      - adds a paltry <9MB to the mitgcmuv executable in most cases
183      - only writes the output when useEMBEDSRC in eedata is true
184    o clean up 3-dim. relaxation codes:
185      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
186      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
187      * Thanks to Tom Haine for testing!
188    
189    checkpoint57z_post
190    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
191      affects output (@ truncation level) of exp. plume_on_slope ; updated.
192    o fix the pickup behavior for obcs in combination with ptracers
193    o fix a bug in ptracers_external_fields_load
194    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
195      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
196    o transfered surface NH pressure to eta field (if exactConserv).
197    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
198         and update lab_sea output.txt file.
199    o completing 3-dim. relaxation code: additional term
200         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
201      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
202      * At compile time, in "EXF_OPTIONS.h" set
203          #define  ALLOW_CLIMTEMP_RELAXATION
204          #define  ALLOW_CLIMSALT_RELAXATION
205      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
206          tauThetaClimRelax3Dim = 15552000.0,
207          tauSaltClimRelax3Dim  = 15552000.0,
208      * 3 cases:
209          1) Use a constant-in-time 3-dim. field
210          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
211          3) Real-time relax. to time-evolving prescribed field
212    o Adding Laplacian-type smoothness constraint on
213      initial and boundary (forcing) controls (ic, bc)
214      * enable at compile-time via
215        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
216      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
217      * Absolute scale somewhat unclear so far
218      * no area weighting was included since no other cost term does so far
219    
220    checkpoint57y_post
221    First step for a NLFS adjoint
222    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
223    o new init. routines for calc_r_star, calc_surf_dr
224    o still need to deal with ini_masks_etc
225    o testreport seemed happy
226    checkpoint57y_pre
227    
228    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
229    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
230    o add new offset feature to offline pkg (plus minor cleanup)
231    o cfc fixes for final year of integration
232    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
233      be in GCHEM_OPTIONS).
234    
235    checkpoint57x_post
236    o fix testreport Pb in multiple test experiment.
237    o cleanup our namelist syntax in verification:
238      - make it more F95 standards compliant (some work still needed)
239      - allows the vast majority of our tests to work with gfortran
240    o Non-Hydrostatic:
241     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
242     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
243    o Allow to apply AB on T,S rather than on AB(gT,gS):
244     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
245     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
246       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
247     - need a "clever" read_pickup to restart from the other AB formulation
248    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
249    o remove some unused variables (reduces number of compiler warnings)
250    o adjoint
251      * Disable useVariableViscosity for adjoint for time being
252        (there are a number of extensive recomputations)
253      * Initialize certain variables needed for adjoint
254    
255    checkpoint57w_post
256    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
257                 fix the singleCpuIO RS version of MDSWRITEFIELD
258       and add a WARNING if using globalFiles=T with multi-processors.
259    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
260      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
261    o tracer advection scheme:
262      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
263       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
264       was not very convenient).
265      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
266       (further tests needed for the implicit DST & Flux-Limiter schemes).
267    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
268      and sRef for convenience, handy, when you want to initialize
269      ptracers in a large domain with a constant non-zero value. Also,
270      untangle ptracers_init.F a little.
271    
272    checkpoint57v_post
273    o change dome exp. to use variable viscosity in side-drag terms.
274    o remove all the files from the cfc_offline test since they are now
275      incorporated into tutorial_cfc_offline which has been producing
276      identical results for a few days of testing
277    o add new parameter: sideDragFactor to enable half-slip-side BC
278      and change side-drag S/R to use viscosity from mom_calc_visc
279      (can switch back by setting sideDragFactor=0.); affects results at
280      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
281       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
282    o vorticity & strain are now computed without masking, to account for
283      no-slip-side BC in variable viscosity calculation ; mask is applied
284      anyway later on, before computing advection/coriolis terms.
285    o modify exp4 to test new obcs support for reading from external files
286      and for passive tracers
287    o fix behavior of ptracers_monitor when monitor output is written to a
288      netcdf-file; still not independent of monitor.F (writes in the same
289      file).
290    o change default value of tRef (put a uniform, meaningful value for ocean
291      & atmos) and initialize sRef (was missing, as Martin mentioned).
292    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
293      to be proportional to enstrophy dissipation length.  Thus,
294       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
295      This is now consistent with Smagorinsky and with the manual.
296    
297    checkpoint57u_post
298    o OBCS and PTRACERS: add open boundary support for passive tracers
299      - either use homogenous (pseudo) v.Neumann conditions or prescribe
300        OB-values from file; this is not different from the way theta and salinity
301        are treated
302      - however, Orlanski-radiation conditions are not supported, and the model
303        will stop if you use pTracers and Orlanski at the same time.
304      - beefed up the rountine obcs_external_fields_load: now only those open
305        boundary values are overwritten with values from files for which there
306        are really files, otherwise the OB-fields remain untouched. This makes
307        it possible to use different OBs at different ends of the domain (as
308        with EXF)
309    o reduce number of exch calls in shap_filt (s2).
310    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
311      truncation level) 4/5 MLAdjust test results (11&12 digits match).
312    
313    checkpoint57t_post
314    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
315    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
316      same truncation, independent of the face number: affects affects several
317      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
318    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
319      note that biharmonic viscosity + no-slip was not tested in any experiment.
320    o fix bug in non-linear free-surf side-drag ; generate new output for
321      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
322    o make mnc honor the writeBinaryPrec flag for most kinds of output
323    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
324    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
325      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
326    o add brackets in multi-terms sum to get same truncation, independent of
327      the face number (manage to get exactly same value of gU,gV at the cs-edge)
328      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
329    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
330      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
331      a maximum grid-scale Reynolds number.  Also, changes all length calculations
332      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
333      Suggested values of viscosity parameters found in mom_calc_visc.
334      Many new viscosity diagnostics available.
335    
336    checkpoint57s_post
337    o Add clearing-house for viscosity calculations, mom_calc_visc and
338      correct numerous bugs in LeithD and Smagorinsky discretizations.  
339      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
340      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
341      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
342      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
343      The Strain-Tension form is now called with useStrainTensonVisc=.true.
344      ViscAhStrain and viscAhTension are now retired.
345    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
346    o In response to JMC's bug report, genmake2 now ignores any soft-links
347      that it finds in the *current* directory when searching for files.
348      Soft-links found in any other source directories will still work as
349      they did before.
350    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
351      a C routine to unlimit the stack size
352    o mnc-ify pkg/aim snapshot vars
353    o mnc-ify pkg/land as requested by Daniel
354    o various changes to mnc including:
355      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
356      - output can now be grouped so that all files within a group
357          change the ITER portion of their names in lock-step together
358      - can now read ("global") PER-FACE (in addition to PER-TILE) files
359          and works with both EXCH1 and EXCH2 (but needs more testing)
360      - writing works for all verification test cases w/ g77 on Linux
361    
362    checkpoint57r_post
363    o make MNC variable initialization happen earlier
364    o add diagnostics for (almost) each term of the momentum Eq.
365    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
366    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
367    o remove MINIMAL_TAVE_OUTPUT option ;
368      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
369    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
370      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
371    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
372    o add time-dependent SST, SSS control
373    o cost terms in ecco/ modularized (new cost_generic.F)
374    o cost_averages routines are modularized (new cost_averagesgeneric.F)
375    o new infrastructure for seaice model vs. obs misfits in seaice/
376      * driver from the_main_loop.F is seaice_cost_driver.F
377      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
378      * gradient check in Exp. 6a of natl_box_adjoint/
379    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
380      (see README file)
381    
382    checkpoint57q_post
383    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
384    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
385      - bug was reported by Jean-Michel and Ian Fenty
386    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
387      update exp. cpl_aim+ocn output.
388    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
389      Needed for high-res. runs with large global files
390      to be able to limit tapelev size
391    o Changed some tests for adjoint:
392      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
393      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
394      * global_ocean.90x40x15/ back to default 3-level checkpointing
395    o Modifications to enable scripted COMMON to MODULE conversion
396      * verification/OpenAD/code/ has necessary scripts and description;
397      * converts, compiles and runs successfully;
398    
399    checkpoint57p_post
400    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
401    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
402      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
403    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
404    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
405      (was already the case for dissipation with mom_vecinv,
406       and also the case for grad.PhiHyd when staggered-timeStep)
407      This will allow to put dissipation out-off the AB time-stepping.
408     Unfortunately, affects truncation error. Update output of exp. that "fails"
409      (cg2d matching number) and leave the others for later: front_relax(10),
410      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
411      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
412    
413    checkpoint57o_post
414    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
415      (2) its ready to be documented during the 20050801 DocFest
416    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
417      for ideal_2D_oce and lab_sea on linux_ia32_g77
418    o set to #undef CTRL_SET_OLD_MAXCVARS_30
419      in global1x1_tot/code_seaice_adj to access indices 32, 33
420      (worth another tag)
421    
422    checkpoint57n_post
423    o adding precip control xx_precip 32
424    o adding swflux control xx_swflux 33
425    o Replacing 10 forcing penalty cost routines by 1 generic.
426    o Implementing partitioning in time-mean and variable adjustment
427      for atmos. state.
428    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
429    o in natl_box_adjoint:
430      * updated exp 1 to 10
431        (but does not have time-mean vs. variable split results yet)
432    o updated global1x1/*_seaice_adj/
433      to incorporate latest changes
434    o enable useSingleCpuIO for mdsio vector routines
435      (applies in particular to tapelev I/O)
436    o removed inefficient K-loop in all active_file*control*.F
437    
438    checkpoint57m_post
439    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
440      and advect_cs (use EXCH-2 and standard cs-32 grid files).
441    o pkg/exch2: filling of face-corner halo regions is optional
442      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
443    
444    checkpoint57l_post
445     tag before updating tutorials (pre-release-2)
446    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
447       for output and interpolation of input fields onto model grid)
448    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
449       Affects results of exp. rotating_tank ; update output.txt.
450    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
451          and taking the square quantity and/or using a fraction-weight field.
452    o fix aim_diagnostics_init.F mate numbers.
453    o add mnc output capability to diagnostics/diagstat and update
454      our cvsignore files for the ACSII output generated
455    
456    checkpoint57k_post
457    o lab_sea now uses diagnostics package and provides a suite of
458      new EXF diagnostics output.
459    
460    checkpoint57j_post
461    o exf
462      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
463        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
464        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
465      * extended diagnostics output
466        - now includes all EXF variables
467        - hs, hl moved to common block
468        - separate S/R for diagnostics, called after ctrl vector is added
469        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
470        - EXFqnet contains true Qnet (i.e. includes qsw)
471      * updated verif. lab_sea, global_with_exf
472      * Rearranging hflux (exf_mapfields -> exf_getforcing)
473        to ensure that diagnostics sees a true EXFqnet
474    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
475    o diagnostics pkg: change pointers so that 1 diagnostic can be used
476      several times with different frequencies.
477    o mnc-ify the thsice package as requested by Daniel Enderton
478      - the monitor--MNC output needs work
479      - many attributes need to be added (most are currently blank)
480    o mnc-ify theaim_v23 package as requested by Daniel Enderton
481      - many attributes need to be added (most are currently blank)
482    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
483    o add Sadourny like discretization to the 4th.O vorticity advection scheme
484    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
485      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
486         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
487    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
488     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
489    
490    checkpoint57i_post
491    o Diagnostics package was changed: diagnostic allocation is now deactivated
492      by setting an empty file name in the namelist (used to be by setting 0 frequency)
493    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
494      add 1rst Order upwind vertical Shear.
495    o add a quick fix for A/B checkpointing in OFFLINE mode
496    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
497      end-run around the C/Fortran linking horror in eesup/src/timers.F
498    o added pkg/runclock: allows user to terminate run based on wall clock
499    o added non-hydrostatic scaling parameter: nh_am2
500    o pkg/my82: futile attempt to make results compiler-independent by adding
501      some "_d 0", etc. no effect.
502    o for mnc output, fill the 'T' coordinate var with myTime and create a
503      separate 'iter' variable for iteration count
504    o pkg/diagnostics:
505      add new capability: output of Global/Regional & per-level statistics ;
506      tested against monitor output (including land & thSIce) on various exp.
507    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
508    
509    checkpoint57h_done
510      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
511      data.diagnostics, data.gchem, data.ptracers) is done.
512    
513    o pkg/diagnostics: prepare for Global/Regional statistics.
514      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
515    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
516      and rename it: DIFFERENT_MULTIPLE
517    
518    checkpoint57h_post
519    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
520    o pkg/diagnostics: change output frequency, now in seconds (instead
521      of Nb of iterations). This requires to change data.diagnostics.
522    checkpoint57h_pre
523    
524    o in mnc, let the user create the output dir if both mnc_outdir_date
525      and mnc_outdir_num are false
526    o add fflags() to pkg/diagnostics which allows one to specify, on a
527      per-file basis, the file precision [default behavior is unchanged]
528    o added diagnostics to pkg/kpp, including computation of mixed layer
529      depth based on a temperature/density criterion
530    o updated verification/natl_box to test the new pkg/kpp diagnostics
531    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
532    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
533    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
534      not mnc -- this mistake was found by JMC and is now corrected
535    
536    checkpoint57g_post
537    o add Adams-Bashforth 3rd Order time stepping:
538      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
539      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
540    checkpoint57g_pre
541    
542    o make lambda[Theta,Salt]ClimRelax spatially varying
543      (default remains spatially uniform constant based on tau)
544    o added new control variables
545      * init. uVel, vVel, etanN
546      * lambda[Theta,Salt]ClimRelax
547    o separate masks used for ctrl_pack/unpack 'from write_grid' output
548      (suggested by G. Forget)
549    
550    checkpoint57f_post
551    o add parameter "baseTime" = model base time = time at iteration zero
552      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
553      account for baseTime shift
554    o move Coriolis arrays from PARAMS.h to GRID.h
555    checkpoint57f_pre
556    
557    o mnc-ifying the seaice package
558    o introduced an alternative length scale calculation for use in the limiting
559      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
560    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
561    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
562      as well as grad(vort3).  Made it compatible with both approximate form
563      for the cubed sphere and full form of these gradients.  Added flag
564      useFullLeith to select between approximate and full form.  
565    o add "d0" in getcon.F to reduce differences between compilers/platforms
566      update output.txt of exp. fizhi-gridalt-hs
567    o change port_rand funtion to allow to set the seed.
568    o fix obscure MNC bug involving conversion between reals and integers
569      - it caused no problems with certain (eg. gcc, ifc) compilers but the
570        new version is now more standards-compliant
571    o adjoint-related modifications
572      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
573      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
574      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
575    
576    checkpoint57e_post
577    o Adding eddy stress controls a la Ferreira et al.
578    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
579    
580    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
581      update output.txt of exp. fizhi-gridalt-hs
582    o add more "Z" dimensions and associated coordinate vars to MNC
583    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
584    o parameter calendarDumps: when set, approximate months (30-31 days) and years
585      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
586      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
587      months and years.  Requires pkg/cal.
588    o diagnostics: add pickup functionality
589      - off by default for backwards compatibility
590      - current version only uses MDSIO -- MNC will be added
591    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
592    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
593    
594    checkpoint57d_post
595    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
596    o modify verification/ideal_2D_oce so that it tests the creation of mnc
597      output from the diagnostics package
598    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
599    o make genmake2 more portable by using ".$FS" instead of ".f" for more
600      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
601    o add coordinate variables to the MNC output from the diagnostics package
602    o change MNC-flags default value: true when useMNC=TRUE
603    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
604      the ability (off by default) to read the grid information using MNC
605    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
606    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
607    o do snap-shot diagnostics at the middle of the time-interval (instead of
608      at the end).
609    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
610      new test for AIM with thSIce + slab-ocean
611    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
612    o move state variable diagnostics to the beginning of the time step ;
613      (note: still needs some work specially for snap-shot diagnostics)
614      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
615    
616    checkpoint57c_post
617    o Change testing option (-ieee) to get closer agreement between g77 & ifort
618    o generate new output.txt files on faulks with g77 & the new -ieee option
619    checkpoint57c_pre
620    
621    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
622      update output.txt of exp. global_ocean.90x40x15
623    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
624      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
625    o add saltFlux(+File) forcing capability with periodicExternalForcing
626    o allow to use pkg diagnostics for GM-Redi & ThSIce output
627    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
628    o improvements for the MNC output from DIAGNOSTICS:
629      - correct handling of the unlimitied dimension
630      - all dims now have associated coordinate variables
631      - variables located at U, V, and Corner ("Z") points are now written
632        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
633        *all* data points are output
634    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
635    o added pkg/seaice/seaice_monitor.F
636    o mdsio_readfield.F can now read files visible only to master MPI process.
637    o pkg/seaice: some test code for ice-modified ocean stress
638    o exf_getffields interpolation defaults to bilinear for all scalar forcing
639      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
640      spurious negative numbers for precipitation and humidity.  Will cause
641      some small numerical differences for integrations using pkg/exf/exf_interp.F.
642    o pkg/ctrl/
643      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
644        May be enabled via doPackDiag
645      *  introduce z-scaling of
646         + gradient (doZscalePack) and
647         + control (doZscaleUnpack)
648    o pkg/mdsio/
649      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
650      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
651    
652    checkpoint57b_post
653    o simplify options in diagnostics_fill arguments (remove weird combinations)
654    o fix MNC coordinate variables so that they now contain per-face index
655      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
656      general, EXCH2 grids are only aligned to a "local" coordinate system
657    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
658    o Implement instantaneous output within pkg diagnostics:
659      setting a negative frequency in data.diagnostics produces
660     "snap-shot" output (as opposed to time-average if freq > 0)
661    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
662      NOTE: change ptracer diagnostics name: use 2 characters to work with
663            more than 9 tracers. Add also diagnostics of advect & diffus flux.
664    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
665      becomes the coordinate variable for the 'T' dimension
666    o add CF-style coordinate variables to MNC
667      - just a first cut:  numbers are meaningless on the cubesphere and
668        missing along the T axis but otherwise it works!
669    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
670    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
671    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
672      this is based directly on what the model compute, so that the content of
673      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
674    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
675    o clean up build options files for SunOS, in particular
676      - remove -traditional from xmakedepend
677      - change -xarch=v9 to -xarch=native for f77
678      - restore use of make (not gmake)
679      - add CC=gcc if using g77
680    o changes per discussion of AM, JMC, & EH3 today:
681      - move redundant "grid" variables out of "state" -- in preparation of
682        creating proper CF-style coordinate variables and in recognition
683        that any/all grid variables can be easily copied (eg. w/NCO) from
684        the grid files into any of the other NetCDF files
685      - *always* output grid variables with MDSIO (this will eventually be
686        changed)
687      - output MNC grid file if useMNC is true
688    o every instance of _END_MASTER() has been found and replaced with
689      _END_MASTER( myThid ) in order to satisfy certain picky Sun
690      preprocessors
691    o re-arrange diagnostics pkg initialisation:
692     - allow each package to extend the available diagnostics list
693     - add some checking and fix small problems (multi-threaded, ...)
694     - new S/R diagnostics_fill (replace fill_diagnostics):
695       look through the short list of active diag. (instead of the long list)
696       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
697    
698    checkpoint57a_post
699    o this set of changes restores TAMC compatibility
700      tested for global_ocean.90x40x15 adjoint on trough
701      (what a pain)
702    
703    checkpoint57a_pre
704    o some modifs in tools/build_options for sunos
705    o call ctrl_pack for ctrl at end for optimcycle=0
706    
707    checkpoint57
708    o add horizontal bi-harmonic viscosity for vertical velocity
709      - new parameter viscA4W (defaults to viscA4)
710      - affects only non-hydrostatic code
711      - to be done: no-slip lateral boundary conditions
712    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
713    o implement Implicit Vertical advection for pTracers
714    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
715      (implemented also for implicit vertical diffusion & advection)
716    o OBCS: extend application of tracer open boundary conditions
717      to a strip beyond the boundary of width Olx/Oly
718    o add call monitor to TAF set of required calls (flow directives)
719      and include in natl_box_adjoint
720    o untangle a few ifdefs related to cost, ctrl, autodiff
721      untangel a few ALLOW_ECCO_OPTIMIZATION
722    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
723      (theta2, salt2 in ecco_cost_weights)
724    
725    checkpoint56c_post
726    o OBCS as control variables
727      - update ctrl_ad_diff.list, obcs_ad_diff.list
728      - remove balance of obcs controls from default
729      - fix index bug nobcs in ctrl_init
730      - fix dummy fields filen in ctrl_pack
731      - add dummy weights for obcs
732    o lsopt: comment out fort.94 output
733    o optim:
734      - remove unnecessary header files
735      - adjusted namelists
736      - add xerbla.F to Makefile
737    o exf:
738      - multiple modifications of exf_check_range
739      - unit change in exf_init_runoff from [m/year] to [m/s]
740    o mdsio:
741      - i/o-vector change debugLevel from debLevA to debLevB
742    
743    checkpoint56b_post
744    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
745      is called from DO_THE_MODEL_IO
746      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
747      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
748      - clean up PTRACERS_WRITE_TIMEAVE a little
749    o add another verification experiment that tests both the cfc-pkg and
750      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
751      reactive tendencies treated inline with regular timestepping
752    o testreport previously did a lousy job of comparing small numbers, so
753      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
754      implemented in the little c-progam tmp_cmpnum.c which is embedded in
755      testreport.
756    o ptracers_monitor: bug fix for MPI
757    
758    checkpoint56a_post
759    o GCHEM: finish reorganizating the package
760      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
761        (introduces another 3D-array for each passive tracer, but only if
762        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
763        gchemTendency is not needed because the timestep is done separately)
764      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
765      - GCHEM is now---more or less cleanly---separate from PTRACERS
766      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
767        so clear to me how that should be done in a general way.
768    o CFC: improve formatting of output in CFC_ATMOS
769    o PTRACERS:
770      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
771        that ALL experiments with ptracers enable can be checked. This makes
772        GCHEM_MONITOR obsolete.
773      - include a runtime parameter PTRACERS_monitorFreq that defaults to
774        monitorFreq
775      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
776    o add PTRACERS (PTR0[1-5]) to testreport output
777    o exf_check_range:
778      * default changed to .TRUE.
779      * will check values for niter0 if debLevA, every timestep if debLevB
780      * STOP in exf_check_range if 'out of range'
781      * range chosen generous to allow for potential extema
782      TBD: a version with stricter range
783           permitted range would be runtime parameters
784    o GMredi:
785      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
786      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
787      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
788    o GCHEM:
789      - move call to GCHEM_FORCING_SEP, so that it is now called before
790        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
791      - introduced a useGCHEM runtime flag and applied it everywhere.
792      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
793        this flag is now only visible within GCHEM-pkg routines.
794      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
795        be replaced by a 3D array that is computed before thermodynamics; for
796        this, the tracer ID iTracer had to be included into the parameter list
797        of ptracers_forcing
798      - set up forward_step to call gchem_forcing, that will replace
799        gchem_forcing_int in ptracers_forcing
800      - cleaning up
801    o small cleaning of exch2: remove files that are also in eesupp/src
802    
803    checkpoint56
804    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
805    o mnc: cleanup "full" files--fixes out-of-memory problem
806    o ECCO-GODAE
807      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
808      * fully merged and updated from SIO code
809        windstress sign change affects
810        - exf_inscal_[u/v]stress
811        - sign of xx_tau[u/v] adjustments
812        - signs in cost_scat
813      * ctrl_get_gen: avoid update of tau[u/v] for first few days
814      * natl_box_adjoint updated and compressed
815      * 2-level checkpoint switch added
816        (tested in EXP. 1 of natl_box_adjoint)
817      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
818    o SVD
819      * first complete, non-hacked version for SVD calculations
820      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
821        performed via direct access files admtlm_vector.it????
822        (via ctrl_[un]pack)
823      * optimcycle is used for ARPACK iteration counter
824        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
825      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
826        and add linear transforms where necessary
827      * controls are initial/final SST, SSS (can be extended; need to check
828        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
829    o mdsio: filename info to both stderr, stdout
830    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
831      from sign change
832    
833    checkpoint55j_post
834    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
835      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
836    o add consistent build directories and .cvsignore files to verification
837    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
838    o make all subroutines 30 or less characters in length for certain older
839      compilers to work (a thorough search only turns up two routines in
840      pkg/ptracers)
841    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
842      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
843    
844    checkpoint55i_post
845    o change arrays for total vertical diffusivity (2.D if explicit,
846      3.D if implicit) ; each ptracer uses its own background value.
847    o added mnc/NetCDF output capability to ocn_compon_interf
848      - added bits to verification/cpl_aim+ocn so that it can run on
849        ITRDA and other clusters without the mpirun "-wd" option
850    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
851      configuration
852    o give MNC the ability to create additional files rather than
853      exceeding a specified file size limit "MNC_MAX_FILESIZE"
854      - the default is just less than 2GB which is a practical limit
855        on many systems
856    o Compute the non-local term using either KPP vertical diffusivity (=default)
857       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
858    
859    checkpoint55h_post
860    o add verification test "vermix"
861    o remove all the *_ioinc flags and replace with the single global
862      outputTypesInclusive flag
863    o allow to set a vertical profile of vertical diffusivity for T & S
864    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
865    o useMNC moved from data.mnc to data.pkg
866    
867    checkpoint55g_post
868    o Renaming carbon AD experiments to comply with testreport conventions
869    o Updating adjoint of Held-Suarez hs94.1x64x5
870    o Fixing directives for non-ECCO forward_step, after ECCO directives
871      have been fixed to avoid recomp. of do_oceanic_phys
872      Works well for global_ocean.90x40x15,
873      but recomp. issue remains for carbon
874    o Updating adjoint output for natl_box_adjoint after
875      pkg/ecco has been modified (see taga c55d_post)
876    
877    checkpoint55f_post
878    o rename to timeave_init_fixed
879    
880    checkpoint55e_post
881    o some delicate re-shuffle of store directives to avoid one
882      extra call of do_oceanic_physics
883      affects ecco_the_main_loop.F, do_oceanic_physics.F
884      checkpoint_lev1_directives.h
885    o NB: this may break global_ocean adjoint temporarily,
886      but it is clear how to fix it. Will do later, need this now.
887    
888    checkpoint55d_post
889    o ECCO specific cost function terms (up-to-date with 1x1 runs)
890    o ecco_cost_weights is modified to 1x1 runs
891    o modifs to allow observations to be read in as
892      single file or yearly files
893    o enable to read exf forcing fields as either
894      single file or yearly files (flag useExfYearlyFields)
895    checkpoint55d_pre
896    
897    o switch between 2-level and 3-level checkpointing
898    o add ability of MNC to write local and "partial" (eg. 2D slices where
899      the full 3D field is never actually stored) arrays to NetCDF files
900      with the correct (that is, the complete multi-dimensional) set of
901      array indicies
902      - used in mom_vecinv() to write the diagFreq output
903      - tested (demonstrated) in verification/aim.5l_cs
904    o further mnc-ification
905      - add verification/lab_sea to the list with mnc setups
906      - fix undefined mnc v-names in cd_code
907      - add kpp to mnc output (both snapshot and timeave)
908    o non-hydrostatic code
909      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
910        in calc_gw.F
911      - defaults to viscAh
912      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
913        friction or Leith) in non-hydrostatic mode, as long as there is
914        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
915    o pkg/cost
916      extend simple cost functions to treat time mean quantities
917      (T,U,V) via cost_accumulate_state from cost_tile
918    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
919        be 2 times larger than the minimum size the advection scheme requires.
920        now get a perfect conservation of salt in advect_cs test-exp (updated)
921    o GGL90 (Gaspar's TKE mixed layer)
922      - add horizontal diffusion of TKE, requires exchanges in
923        do_fields_blocking_exchanges, horizontal diffusivity is zero by
924        default. In OPA there is no horizontal diffusion of TKE but the
925        mixing coefficients are computed from a horizontal average of TKE of
926        6 points or so. I think that diffusion has a little more physical
927        justification.
928      - clean up ggl90_calc in the hope of reducing memory usage (this hope
929        was in vain)
930      - mask tke-variable in ggl90_init
931    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
932    o fix biharmonic diffusion on CS-grid.
933    o more obcs stuff
934      - added obcs_external_fields_load as an alternative to the EXF-pkg option
935        for reading boundary values. This routine is called from
936        obcs_prescribe_read
937      - updated obcs_check
938      - changed sponge layer relaxation parameter units for days to seconds
939      - turned off sponge layer by default
940      - changed argument list of OBCS_CALC to myTime+deltaTclock
941      - fixed about 35 bugs in obcs_external_fields_load
942    
943    checkpoint55c_post
944    o obcs stuff
945      - new runtime flags useOBCSprescribe, useOBCSbalance
946      - re-arranged obcs_calc
947      - moved exf_getobcs to obcs_prescibe_read
948        obcs_prescibe_read is called after ORLANSKI stuff
949        and independent of it (executable can contain all).
950      - updated obcs_check
951      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
952        These may be necessary only if tangential velocities are
953        prescribed at OB, not sure, needs testing.
954    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
955      which simplifies the calls and passes the ifc check-bounds test
956    
957    checkpoint55b_post
958    o add a 2D scalar, Z location, exchange_2 routine.
959    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
960      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
961      affects advect_cs results (for the wrong reason): update output.txt
962    o use a more standard discretization for biharmonic viscosity ;
963     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
964      affects results of dome set-up: update output.txt
965    o fix gad_advection.F (CubedSphere part), back to version 1.23
966    o fix bug in mom_vi_del2uv.F (CubedSphere part).
967    
968    checkpoint55a_post
969    o merged code to
970      * prescribe/read time-dependent open boundaries
971        (works in conjunction with exf, cal)
972      * sponge layer code for open boundaries
973      * each boundary N/S/E/W now has its own CPP option
974        (healthy for the adjoint)
975    
976    checkpoint55
977    o up-to-date adjoint of previous breaks
978      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
979      - global_ocean_ebm: adjoint still needs fix (TLM ok)
980      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
981      - carbon: * remove tr1-related adjoint verification
982                * add ptracer as control variable
983    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
984      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
985    
986    checkpoint54f_post
987    o in verification/carbin/ remove experiment related to
988      ALLOW_PASSIVE_TRACER (array tr1 etc)
989      code_ad/ input_ad/ results_ad
990    
991    o add two new packages
992      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
993        + subject to optimization (memory)
994      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
995        + subject to reordering (many GOTOs in the original code)
996        + so far opps is called for every (i,j) point, and then operates in
997          the vertical; one may want to reorder the scheme in order operate in
998          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
999          fields)
1000    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1001      - all verification tests compile and run with linux_ia32_g77
1002      - defaults are compatible with current input files--nothing
1003        should change if you were not previously using MNC
1004      - MNC output has been added in numerous places (eg. timeave)
1005        but there are still a few writes not yet do-able with MNC
1006        (this is in progress)
1007      - flags now allow for either/or/both use of MDSIO and MNC and
1008        documentation will soon follow
1009      - numerous small formatting cleanups for ProTeX
1010    o add version info (via BUILD_INFO.h) to MNC and stdout
1011    
1012    checkpoint54e_post
1013    o add two new packages
1014      - pp81 (Packanowski and Philander, 1981), Richardson number and
1015        stratification dependent mixing
1016      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1017      - these scheme operate in a similar manner as KPP (without ghat, of
1018        course), however there is only one diffusivity that is used for both
1019        temperature and salinity (and passive tracers)ç
1020    o add offline package
1021    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1022      provided by Stephanie Dutkiewicz
1023    o genmake2: add ability to search for C compilers and cleanup test output
1024      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1025    
1026    checkpoint54d_post
1027    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1028    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1029      leading to additional shift by 5 days each year of integration
1030       (i.e. leading to considerable offset over the years)
1031    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1032    o start with no AB and no initial filtering (staggerTimeStep):
1033      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1034    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1035      (external loading & cpl import/export stay in forward_step.F)
1036    o update coupling interface to work with new staggerTimeStep
1037    o change MDSIO ptracers_pickup.
1038    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1039    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1040    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1041    
1042    checkpoint54c_post
1043    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1044      this affects (truncation error) output.txt of test-exp:
1045       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1046    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1047    o change Qnet to always be the net heat flux, (+upward).
1048      affects (truncation error) output of natl_box exp.: updated
1049    o define the max number of passive tracers in PTRACERS_SIZE.h
1050    o start to test mnc routinely in exp0
1051    o add sea-ice loading (sIceLoad) as a new forcing field.
1052    
1053    checkpoint54b_post
1054    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1055       impressive on Altix and Opteron systems)
1056    o diagnostics can now write NetCDF files through the mnc package
1057    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1058    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1059    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1060      affects (truncation error) output of lab_sea & natl_box exp.: updated
1061    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1062    
1063    checkpoint54a_post
1064    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1065    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1066    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1067    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1068      + internal_wave (shift in writing cg2d_ini_res)
1069    checkpoint54a_pre
1070    
1071    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1072      - modified verification/lab_sea and natl_box_adjoint accordingly
1073    
1074    checkpoint54
1075    checkpoint53g_post
1076    o prepare splitting of thermodynamics: store convect.counter in common block
1077    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1078      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1079    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1080    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1081    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1082    o restore adjointability
1083    
1084    checkpoint53f_post
1085    o modifications that affect AIM experiment results (update output.txt):
1086      - no advection of S at top interface Nr (pkg/generic_advdiff)
1087      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1088    o AIM pkg:
1089      - include stability function into surf.Flux derivative relative to Tsurf
1090      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1091    
1092    checkpoint53e_post
1093    o merged cylindrical coord configuration
1094    o added rotating_tank experiment
1095    checkpoint53e_pre
1096    
1097    checkpoint53d_post
1098    o faulks upgraded: re-generate output.txt that have changed:
1099       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1100    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1101    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1102    o added Sadourny discretization of Coriolis
1103      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1104      - re-enabled use of omega3 (useAbsVorticity)
1105    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1106      vector-invariant equations
1107      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1108    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1109      hopefully without new bugs
1110      - still to do: biharmonic friction for non-hydrostatic w
1111    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1112    o regenerated output for global_ocean_ebm (using -ieee)
1113    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1114      of mom_common/
1115      - simple re-arrangement of instructions within computing loop
1116    checkpoint53d_pre
1117    
1118    checkpoint53c_post
1119    o new version of coupler for AIM+thSIce and Ocean models
1120     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1121     - land: change Evaporation of snow
1122     - aim with thSIce: fix bug in snow-precip.
1123    o changes to calc_gw.F
1124     - bug fix for w^2 term near the bottom boundary
1125     - (hopefully) improve the lateral slip boundary condtions for use with
1126        partial/looped cells
1127      - because the bug fix changes two verification experiments anyway (exp5
1128        and plume on slope), change the lateral boundary condition from half slip
1129        to the value of no_slip_sides
1130    o ebm package wasnt quite up to the parallel task. Fixed that.
1131    o Adjoint of EBM package + verification
1132      * TLM OK
1133      * ADM not sufficient accuracy yet (needs further testing)
1134    
1135    checkpoint53b_post
1136    o Commiting new energy balance model to repository
1137      * package is pkg/ebm
1138      * verif. is verification/global_ocean_ebm
1139      * references are in ebm_driver.F
1140    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1141    C        Global thermohaline circulation. Part I:
1142    C        Sensitivity to atmospheric moisture transport.
1143    C        J. Climate 12(1), 71-82
1144    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1145    C        Global thermohaline circulation. Part II:
1146    C        Sensitivity with interactive transport.
1147    C        J. Climate 12(1), 83-91
1148    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1149    C        Destabilization of the thermohaline circulation
1150    C        by atmospheric eddy transports.
1151    C        J. Climate 7(12), 1870-1882
1152    o Will need long integration testing.
1153    checkpoint53b_pre
1154    
1155    o created pkg/mom_common in preparation for variable viscosity code
1156    o renamed and split ini_mnc_io
1157    o pkg/land: only liquid water can diffuse or run-off
1158    o AIM using land: soil wetness availability account for snow
1159    o added printMapIncludesZeros to EEPARMS namelist
1160    
1161    checkpoint53a_post
1162    o restore TAMC compatiility for exf_constants.h
1163      (no usage of _d in .h)
1164    o Additional storing in KPP in an attempt to fix
1165      TAMC problem with adjoint of KPP code.
1166      (no success...)
1167      Identical code works fine with TAF.
1168    o Fixed verification/natl_box_adjoint experiments.
1169      Initial conditions for Experiments 4 and 5 are now
1170      set to "SEAICE_initialHEFF=0", which is more reasonable,
1171      and hence gives results closer to that of Experiment 2.
1172      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1173    
1174    checkpoint53
1175    o stable checkpoint with up to date adjoint
1176      TLM tests only run for 1st grdchk at the moment. Its unclear if
1177      this is a code problem or a problem with resetting code for g_
1178      variables that is being autogenerated wrong.
1179      Otherwise:
1180       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1181       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1182         are both still in chaos following their security messes.
1183    
1184    checkpoint52n_post
1185    o various build (mostly genmake2) changes including:
1186      - ability to build/run more easily within Cygwin and MacOS X
1187      - more complicated Makefiles with a stronger dependence on Gnu Make
1188    o pkg/seaice modifications
1189      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1190        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1191        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1192      - changed proxy for geostrophic velocity and updated
1193        verification/lab_sea/results/* accordingly
1194      - removed ADI dynamic solver from pkg/seaice
1195      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1196        they caused a segmentation fault under certain circumstances
1197      - removed unused field WATR
1198    o bug fix in exf-package:
1199      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1200         now reflect that.
1201    o small fixes in the cal-package:
1202      - set reference date to first of January for the 'model'-calendar
1203      - failing of cal_CheckDate in cal_FullDate now actually results in a
1204        warning
1205    o small modifications in exf-package to increase flexibility:
1206      - change climtempfreeze from a constant to a runtime parameter that
1207        is specified in data.exf_clim (default = -1.9)
1208      - introduce runtime parameter windstressmax (default = 2.0) that is
1209        specified in data.exf
1210    o fix in pkg/thsice:
1211      - update Evap (Tsf changes) to be consistent with Latent heat flux
1212      - maintain snow precipitation unchanged (even if Tsf >=0).
1213     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1214    
1215    checkpoint52m_post
1216    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1217      this does not change any of the results, because myIter=0 in swfrac always
1218      lead to jwtype=2 (the default anyway), but the call makes little sense
1219      as a default
1220    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1221    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1222      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1223    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1224    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1225    o extending useSingleCpuIO option to work with new exch2 I/O format
1226      - old-style, missing-tile I/O is still accessible by defining CPP
1227        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1228    o monitor package can write to NetCDF files and/or STDOUT
1229    o fix re-definition bug in MNC_GRID_INIT_ALL()
1230    o doc/api_reference added
1231      - a framework for building an API Reference Manual using all
1232        the "protex" comments embedded in the code
1233      - see pkg/generic_advdiff, pkg/mnc for examples
1234    o MNC:
1235      - make myThid the last argument for all subroutines
1236      - new default for the grid files: NO halos
1237      - add useMNC and other run-time flags
1238      - separate per-file-group handling of the unlimited dimension
1239      - early initialization of MNC w/ flags read at the eeboot stage
1240        and lookup tables set in initialize_fixed
1241      - write all MNC output to a freshly-created directory
1242    o thermodynamics sea-ice (thsice) is now tested with testreport.
1243    o test exp. advect_cs: use the standard cs32 grid ; update output.
1244    o Added functionality to grdchk:
1245      pick global i,j,k position (or nearest wet) where to perform check.
1246    
1247    checkpoint52l_post
1248    o new land formulation:
1249      a) use ground enthalpy as prognostic variable to ensure exact
1250         energy conservation.
1251      b) account for water temperature and for latent heat of freezing
1252         in all processes (rain, run-off, ground storage)
1253      c) compute surface and ground temperature implicitly.
1254    o aim_v23 modification for new land model:
1255      a) Treat separately land / ocean / sea-ice surface fluxes
1256         to allow implicit computation of land & sea-ice surface temp.
1257      b) add snow precipitation.
1258    checkpoint52l_pre
1259    
1260    o fix problem (when 1 tile is empty) in min/max monitor.
1261    o fix bug in timeAve (u,vZetatave in common block)
1262    o no restoring terms under ice for pkg/seaice
1263    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1264    o bug fix for pkg/seaice pickups
1265    o change MNC call locations and add coordinate attributes
1266    o mask vorticity at the corner ; affects global_ocean.cs output
1267    o fix ini_curvilinear_grid ; test CS experiments with mpi
1268    o aim.5l_cs: modify sea-ice fraction input file ; update output
1269    o exf: Adding simple range check routine for exf fields after read
1270    
1271    checkpoint52k_post
1272    o removed top-level directory "diags"
1273      - we migrated these functions to pkg/timeave a long time ago
1274    o fixed bug introduced in pkg/monitor
1275    o accuracy ctrlprec = 32 insuffient for gradient checks using
1276      averaged fields (I/O via cost_averages)
1277      -> use ctrl.h in active_file*.F to control I/O precision.
1278    o paramter list of CALL ADTHE_MAIN_LOOP
1279    o added initial do_the_model_io to ecco
1280    o set all ...Freq to zero after cost_final
1281      taveFreq, dumpFreq, pChkptFreq
1282    o MAIN and ECCO differentiability restored
1283    
1284    checkpoint52j_post
1285    o fix nchklev in tamc.h for global_ocean...
1286    o Bringing flow and store directives up-to-date
1287    o Really weird thing!
1288      call do_the_model_io from the_main_loop with parameters
1289      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1290      TAF places a faulty re-call of initialise_varia
1291      after cost_final call which should not be there!
1292    checkpoint52j_pre
1293    
1294    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1295      error messages
1296    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1297    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1298      debug output
1299    o modfied mdsio_writefield.F to handle non-global files under exch2
1300    o update AIM Cubed-Sphere exp (aim.5l_cs):
1301      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1302    o update AIM Equatorial Channel exp:
1303      use standard aim_v23 pkg and change the SST fields to be more realistic.
1304    o globalFile now works with exch2
1305    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1306      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1307    o limit timeave output for hi-res integrations
1308    
1309    checkpoint52i_post
1310    o removed CPP_EEOPTIONS.h from verification/*/code
1311    o updated the tiling for global_ocean_pressure
1312    checkpoint52i_pre
1313    
1314    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1315      the old pkg/aim).
1316    
1317    checkpoint52h_pre
1318    o shortened offending lines in exch2_send_rx?.template
1319    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1320    o genmake2: add build & execute test for NetCDF code
1321    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1322      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1323    o added useSingleCPUIO flag to monitor.F and mon_out.F
1324    o added temporary hack for sea-ice dynamics on the cube:
1325      metric terms are ignored and it is assumed that
1326      there is no sea-ice on cube faces 1, 2, 4, and 5.
1327    
1328    checkpoint52f_post
1329    o added exch2 cube routines to pkg/exch2
1330    o modified hs94.cs-32x32x5 to use it
1331    o added new grid files to hs94.cs-32x32x5
1332    checkpoint52f_pre
1333    
1334    checkpoint52e_post
1335    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1336      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1337    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1338      to work with implicit vertical advection and AB ;
1339    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1340    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1341     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1342    checkpoint52e_pre
1343    
1344    o fix bug in impldiff when Nr=1 or Nr=2.
1345    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1346    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1347    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1348      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1349    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1350    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1351    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1352    
1353    checkpoint52d_post
1354    o re-tiled many expts to allow comparison in multi-processor mode
1355      - updated output accordingly
1356      - changed hs94.128x64x5 to use intial T from file rather than use the
1357        random number generator
1358    o add infrastructure in model routines for fizhi and gridalt packages
1359    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1360    o changes to permit hi-res, cubed-sphere, configuration
1361      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1362      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1363      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1364        of surface winds for the cube
1365      (A verification experiment, based on global_ocean.cs32x15, but with
1366       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1367       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1368       complete with example surface forcing files and matlab scripts to look
1369       at the output and compare it with that of global_ocean.cs32x15.)
1370    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1371       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1372       to conform to the common rule.
1373    o check-in the first version of the coupler + interfaces for multi-components
1374       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1375       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1376       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1377       - ocean and atmos. share the same horizontal grid (no interpolation).
1378       - exchanges between component and coupler is done in forward_step
1379    o new verification experiment, cpl_aim+ocn:
1380       coupled ocean - AIM atmosphere on cs32 grid.
1381    
1382    checkpoint52d_pre
1383    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1384    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1385    
1386    checkpoint52c_post
1387    o Fixing OPTIONS files for use of exf:
1388      - ALLOW_ECCO not needed
1389      - ECCO_CPPOPTIONS.h should not be included from
1390        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1391        as has been the case in the past
1392      - All cal/exf related options are currently set in
1393        single header file. Should remain so until we
1394        agree on a consistent new policy.
1395    o Removed all CPP options for cal package.
1396      cal has no more CPP options.
1397    o modified STOREs in GAD_ADVECTION
1398    o corrected key comp. for passkey
1399    
1400    checkpoint52b_post
1401    o new version: "thsice" of thermodynamic sea-ice pkg:
1402     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1403     - modify fluxes but do not change theta directly;
1404     - light cleaning of bulk_force pkg (still needed with thsice).
1405     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1406       + output_thsice.txt to test thsice & bulk_force pkgs.
1407    o put back grid & coriolis monitor output.
1408    checkpoint52b_pre
1409    
1410    o call "do_the_model_io" at the beginning (=> dump initial state)
1411    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1412    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1413      (need info on NUMBER_OF_PTRACERS)
1414    o missing PTRACERS headers in some routines
1415    o default tamc.h in pkg/autodiff supposed to crash
1416      to ensure proper customization
1417    
1418    checkpoint52a_post
1419    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1420      - moved surfaceTendencyTice from pkg/seaice to main code
1421      - subroutine FREEZE_SURFACE now limits only surface temperature
1422        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1423        => new output.txt for global_ocean.cs32x15 & global_with_exf
1424      - keep the old version of FREEZE for backward compatibility;
1425        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1426      - corresponding modifs for TAF directives
1427    o added surface flux output variables to TIMEAVE_STATVARS
1428    o time-averaged output for pkg/ptracers
1429    o fix problem with ECCO-related divided adjoint
1430      snapshot file was missing some ad-variables,
1431      but no warning issued by TAF
1432    
1433    checkpoint52a_pre
1434    o some bug fixes for #undef REAL4_IS_SLOW
1435    
1436    checkpoint52 = ecco_c52_e35
1437    o after testing adjoints of checkpoint51u_post
1438    
1439    checkpoint51u_post
1440    o this is the post-merge tag of the ecco-branch
1441      (needs another clean checkout and re-testing)
1442    o various natl_box_adjoint configs and results
1443      but no input fields
1444    o obcs adjoint not yet merged!
1445    o adding ECCO global 1x1 and 2x2 degree configs
1446    o updated/extended some store directives for seaice
1447    o pkg/ecco now containes ecco-specific part of cost function
1448    o top level routines the_main_loop, forward_step
1449      supersede those in model/src/
1450      previous input data.cost now in data.ecco
1451      (new namelist ecco_cost_nml)
1452    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1453    
1454    checkpoint51t_post
1455    o this is the pre-merge tag of the ecco-branch
1456    
1457    checkpoint51s_post
1458    o cleanup: removed various obsolete #define-s
1459    o pkg/grdchk
1460      - renamed 'ph-grd 3' to 'grad-res'
1461      - merged from ecco-branch
1462        (remaining bug fixes for obcs gradient checks)
1463      - additional high-precision output for testreport
1464        (grep for 'precision_grdchk_result')
1465    
1466    checkpoint51r_post
1467    o cleaned up or removed CPP_OPTIONS.h files
1468    o updated results for some of the tests to reflect the new
1469      optfiles (-ieee: -O0 instead of -O3)
1470    
1471    checkpoint51q_post
1472    o cd_code:
1473      - moved cd_scheme.F -> cd_code_scheme.F
1474      - separate read_checkpoint from cd_code_ini_vars.F
1475      - separated cd_code part from write_checkpoint
1476      - updated AD_SOURCE, generated .flow
1477      - added CD_CODE_VARS.h to the_main_loop
1478      - Moving cd_code specific store dir.s to pkg/cd_code
1479    o ctrl package totally restructured
1480      - pack/unpack now optional and decoupled from
1481        xx_/adxx_ I/O
1482      - ctrl_pack/unpack cleaned
1483        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1484      - confined inclusion of AD_CONFIG.h to where necessary.
1485    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1486    
1487    checkpoint51p_post
1488    o create initial cd_code package
1489      - WARNING: the initialization of fields within packages
1490        is broken because INI_FIELDS (where READ_CHECKPOINT is
1491        called) is called *before* PACKAGES_INIT_VARIABLES.
1492        This seems to be backwards since
1493        1) its important to initially zero the entire field including
1494           the "halo" region
1495        2) zeroing needs to be done *before* reading pickup info
1496           and the pickup call might or might not happen in any
1497           particular run
1498      - this needs an overhaul for R2
1499    o cleanup verification/*/code/GMREDI_OPTIONS.h
1500    o cleanup testreport
1501    
1502    checkpoint51o_post
1503    o bringing AD-related verif's up to date with genmake2
1504      - carbon/
1505      - global_ocean.90x40x15/
1506      - hs.94.1x64x5/
1507      - (front_relax/ )
1508    o (more) consistent directory structure for AD-related verif.'s
1509    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1510    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1511    o bug fix in find_alpha.F for MDJWF:
1512      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1513        change rho -> rho-rhoConst
1514      - replace call find_rho to find_rhonum
1515    o initialisation of rFlx extended to full array (required by TAF)
1516      and shifted to thermodynamics
1517    o removed PTRACERS.h in ptracers routine
1518    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1519    o Correcting initialisations for fVerU, fVerV.
1520    o helping TAF to recognize dependency on kUp for
1521      fVerU, fVerV
1522    o Replacing delZ by delR in pkg/ctrl/
1523    checkpoint51o_pre
1524    
1525    o undid all of cp51 pending some cleanups and discussion
1526    o added the [#include "AD_CONFIG.h"] statement to all files that need
1527       it for adjoint/tl #defines
1528     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1529     o removed tools/genmake since it no longer works
1530    
1531    checkpoint51n_post
1532    o modifications to make FREEZE flux visible to pkg/kpp
1533      - moved surfaceTendencyTice from pkg/seaice to main code
1534      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1535      - subroutine FREEZE now limits only surface temperature
1536        (this means new output.txt for global_ocean.90x40x15,
1537         global_ocean.cs32x15, and global_with_exf)
1538    o added surface flux output variables to TIMEAVE_STATVARS
1539    
1540    checkpoint51n_pre
1541    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1542    o added [#include "AD_CONFIG.h"] to all files that use the following
1543      defines:
1544      - ALLOW_ADJOINT_RUN
1545      - ALLOW_TANGENTLINEAR_RUN
1546      - ALLOW_ECCO_OPTIMIZATION
1547    
1548    checkpoint51m_post
1549    o incorporating changes to get TAMC/TAF working in genmake2
1550      - added new TAMC/TAF targets to the Makefile
1551      - various cleanups related to package handling
1552      - these changes should have no impact on the forward model
1553    
1554    checkpoint51l_post
1555    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1556     - faster algorithm for cal_addtime.F
1557     - higher precision arithmetic, where needed
1558     - pkg/exf *startdate variables changed from calendar date to
1559       model integration time
1560    
1561    checkpoint51l_pre
1562    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1563    o enable to apply restoring on S & T only in a latitude band.
1564    o update output (external_forcing_surf modif. change truncation errors)
1565       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1566    
1567    checkpoint51k_post
1568    o change default to: useNHMTerms=.FALSE.
1569     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1570       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1571     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1572        exp1, ideal_2D_oce
1573     - change data file of oceanic exp (leave the results unchanged for now)
1574       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1575    o set gravitySign automatically according to the vertical coordinate used
1576      (and change sign: back to "logical" value: +1 when R increases downward)
1577    o added an include barrier to the default CPP_OPTIONS.h and
1578      removed the #include "PACKAGES_CONFIG.h" from it
1579    o fix a bug in mom_fluxform (from chk51j_post)
1580    
1581    checkpoint51j_post
1582    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1583    o adjusted some flow directives (dynamics, thermodynamics)
1584    o added cubed-sphere case to test cost function
1585    o heckpoint_lev?_directives.h now include
1586      pkg-specific directives, whenever those are enabled.
1587    o Moving pkg-specific flow directives to corresponding pkg
1588      Moving pkg-specific differentiation list to corresponding pkg
1589      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1590      ---> conventions are
1591           - pkg_ad.flow
1592           - pkg_ad_diff.list
1593           - pkg_ad_check_lev?_dir.h
1594    
1595    checkpoint51i_post
1596    o merge of the branch-genmake2
1597      - knowingly breaks the older genmake
1598      - automatic generation of all ALLOW_${PKG_NAME} defines
1599      - new testreport supersedes older testscript
1600    o large number of package inclusion and header cleanups
1601    checkpoint51i_pre
1602    
1603    o new output for adjoin of global ocean vector invariant
1604    o fix for checkpoint of thermodynamic seaice and bulk_force
1605    o Steph gchem various cleanups
1606    
1607    checkpoint 51h_pre
1608    o fixed some single quotes
1609    o modify gchem pkg to be more versatile
1610    o modifications to clean up dic pkg
1611    o add pkg/cfc
1612    
1613    checkpoint51g_post
1614    o provide links for ARPACK and ADM*TLM
1615    o start removing verification/vero/
1616    o update AD-related stuff
1617      (in particular some IF-statements in model/src/ routines)
1618    o adding to verification/global_ocean.90x40x15/ adjoint of
1619      vector invariant setup
1620    
1621    checkpoint51f_post
1622    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1623    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1624      of tracer Green's fucntions for ocean inversion project.
1625    
1626    checkpoint51f_pre
1627    o Added on-the-fly spatial interpolation capability
1628        "USE_EXF_INTERPOLATION" to pkg/exf.
1629      - This is a temporary Cartesian-grid hack until
1630        the super-duper ESMF coupler becomes available.
1631      - See verification/global_with_exf/README for usage example.
1632      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1633        flags and modified pkg/seaice accordingly.
1634    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1635        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1636        non-local transport term.
1637    
1638    checkpoint51e_post
1639    o pkg/mom_vecinv:
1640      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1641      - add time-ave diagnostic of vorticity advection.
1642    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1643    o atmospheric geopotential: - include water vapor effect;
1644                                - use p^kappa in p* scaling.
1645    o land pkg: read initial state from files.
1646    o AIM : add stratospheric drag in the upper level
1647    
1648    checkpoint51d_post
1649    o change function ILNBLNK (=> last non-blank char.) to return zero
1650      (instead of the string length) when the string. char is empty
1651    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1652    o modif's to restore TAMC compatibility
1653      - avoid "_d" constructs in PARAMETER declarations
1654      - avoid interrupting lines by comment lines
1655    o Use cluster local disks for purely local I/O
1656      vs. globally visible disks needed for ctrl stuff
1657      (merged from ecco-branch)
1658      - new active_file_loc... and mdsio_..._loc routines
1659      - affected packages: autodiff, ctrl, grdchk, mdsio
1660    
1661    checkpoint51c_post
1662    o introducing integer flag debugLevel
1663      - debLevZero: suppress all output
1664      - debLevA: standard
1665      - debLevB: equivalent to current debugMode=.TRUE.
1666    o introducing pathname variable mdsioLocalDir for mdsio
1667      that can be specified at runtime
1668      (relevant for cluster I/O to local disk)
1669    `
1670    >>>checkpoint51b_post
1671    adjoint of ptracers
1672    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1673    o extended state in checkpoint_lev?, etc.
1674    o alternative ctrl/cost with tr1 or ptracer
1675    o new comlev1_bibj_ptracers
1676    o new ptracers.flow
1677    o made ptracers_forcing same as external_forcing_s
1678    o added verification for adjoint with ptracers
1679      - adm. grdchk fail so far
1680      - tlm. grdchk OK
1681      - checked tapelev/comlev recomputations: OK
1682    <<<checkpoint51b_pre
1683    
1684    checkpoint51a_post
1685    o added code for biogeochemistry package
1686      - new pkgs: dic, gchem
1687      - new subroutine in ptracers
1688    o modify code for biogeo packages
1689      - in model/src and pkg/ptracers
1690    
1691    checkpoint51
1692    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1693      - autodiff, ctrl, exf, grdchk, seaice
1694      kept separate packages
1695      - cost, ecco, obcs
1696    o updating verification/internal_wave, verification/lab_sea
1697      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1698    
1699    checkpoint50i_post
1700    o Preparing next differentiable checkpoint and sync
1701      of MAIN vs. ecco-branch
1702      - 1st step: this one is differentiable
1703      - 2nd step: next(! not this) checkpoint will have updated packages
1704                  from ecco-branch)
1705    
1706    checkpoint50h_post
1707    o new package "land": provide surface BC for AIM.
1708    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1709    o AIM: use true log-P extrapolation for near surface temp (= as in
1710        F.Molteni paper) ; update aim.5l_cs output.
1711    o New variable in PARM03 for more flexible pickups
1712    o somewhat cleaned package initialisation sequence for
1713      ctrl/ cost/ ecco/ in packages_... routines
1714    
1715    checkpoint50g_post
1716    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1717      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1718      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1719        made the default because of faster convergence than ADI
1720    
1721    checkpoint50f_post
1722    o exf totally restructured
1723      - replaced all exf_set_ routines by one generic exf_set_gen.F
1724        and made sure it's still differentiable
1725      - split exf_getffields.F into new exf_bulkformulae.F
1726      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1727      - updated adjoint/makefile and relevant verif. accordingly
1728    
1729    checkpoint50f_pre
1730     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1731          + change Evap over land. (update aim.5l_cs output)
1732     o added missing .cvsignores and made uniform across expts
1733     o changed configuration of tidal_basin_2d expt
1734     o added pkg/debug functions for tracing code in fatal crashes
1735     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1736     o new fn in pkg/monitor to stop model if solution grows too big
1737     o removed lots of single quotes from comments
1738    
1739    checkpoint50e_post
1740    o make KPP work with PTRACERS
1741     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1742       nearly a copy of kpp_transport_s
1743     - there is no analogue to SurfaceTendencyS, so I have to use
1744       gPtr(of the surface layer) instead
1745    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1746    checkpoint50e_pre
1747    
1748    checkpoint50d_post
1749    o change kpp output from multiple-record state files to single-record state
1750      files analogous to write_state.F
1751    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1752      analogous to the cg2d-related output.
1753    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1754      so that writing to internal file fn (with length 512) fails.
1755    checkpoint50d_pre
1756    
1757    checkpoint50c_post
1758    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1759    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1760    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1761    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1762    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1763    
1764    checkpoint50c_pre
1765    Merging from release1_p13:
1766    o bug fix for pkg/seaice dynamic solver
1767    o Added SEAICE_initialHEFF to pkg/seaice
1768    
1769    checkpoint50b_post
1770    o store u*,v* in gU,V instead of in guNm1,gvNm1
1771    o in order to put the momForcing out of the Adams-Bashforth:
1772      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1773      to timestep.F
1774    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1775    o re-generate output for highly sensitive test-exp:
1776       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1777    
1778    checkpoint50b_pre
1779    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1780    o corrected CPP option mismatch in exf_Bulk... functions for case
1781      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1782    
1783    checkpoint50a_post
1784    o Bug fix for merging between c50 and KPP.
1785      ikey was passed from thermodynamics to kpp_calc via
1786      common block rather than being recomputed in kpp_calc,
1787      in contradiction with new key itdkey.
1788      New key ikppkey created, and tamc.h headers updated.
1789    
1790    checkpoint50
1791    - 2nd step of merge with ecco-branch:
1792      merge changes in ecco-branch back into main trunk
1793    - bug fix in find_alpha
1794    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1795    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1796    - merged some sliced AD support routines
1797    
1798    checkpoint49
1799    merged from ecco-branch:
1800    o exf:
1801      - Enable initialisation of forcing fields to constant
1802        (runtime) values.
1803      - in exf_getffields.F
1804        Reduce i-/j-loop to interior domain, discarding overlaps.
1805        That also fixes wrong TAF-key computations for key_1, key_2
1806        with bulf formulae.
1807      - exf_init.F modify #ifdef for exf_init_evap
1808      - exf_getffieldrec.F, ctrl_getrec.F
1809        The following INT-usages are not safe:
1810          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1811          fldcount = int(fldsecs/fldperiod) + 1
1812        and were modified.
1813    o autodiff: checkpoint_lev...
1814      - updated storing for bulk formulae (some arrays were missing)
1815      - added state for seaice package
1816      - synchronized with main branch
1817    o DIVA:
1818      Modif.s in
1819      - the_main_loop.F
1820      - the_model_main.F
1821      and added cost_final_restore.F cost_final_store.F
1822      o With these changes, it is possible to fully separate
1823        the first forward run to compute the cost function (mdthe_main_loop)
1824        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1825        into separate model executions.
1826        This enables better tuning of DIVA to given queue sizes.
1827      o Loss of cost function value in consecutive DIVA runs is
1828        fixed by storing to 'costfinal' file.
1829      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1830        beginning/end of adjoint integration is accounted for.
1831      The current changes apply to TAF-1.4.26.
1832      TAF has one remaining bug, requiring one manual change
1833      (see MITgcm manual).
1834    o cal: synchronized between MAIN and ecco-branch
1835    
1836    checkpoint48i_post
1837    o Changes to restore differentiability of code w.r.t. previous tag
1838      (mostly adding new routines to make list and replacing
1839      pressure by totPhiHyd).
1840    o Updated and merged grdchk package
1841      - has both ADM and TLM checks
1842      - works for single- and multi-proc.
1843      - output cleaned
1844      - worked successfully for parallel DIVA
1845    o genmake:
1846      - Adding -platform=SP4
1847      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1848    o Modif. for DIVA:
1849      ctrl_unpack should not be called in intermediate DIVA interval.
1850      (similar thing would apply for active files such as
1851      tbar, sbar, psbar, which should not be reinitialised;
1852      only relevant for ecco-branch)
1853    
1854    checkpoint48h_post
1855    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1856    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1857    o Added SEAICE_initialHEFF to pkg/seaice
1858    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1859    
1860    checkpoint48g_post
1861    --- EOS:
1862    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1863      store total Potential in totPhyHyd for diagnostics & EOS.
1864    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1865    --- Pressure/geopotential gradient:
1866    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1867    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1868      ( changes results of global_ocean_pressure )
1869    o NLFS + z-coord.: add eta*Rho' contribution.
1870    o accurate phiHyd when using interface-W at the middle between 2 centers
1871     ( changes results of ideal_2D_oce )
1872    o includes r* 2nd term in potential gradient.
1873    
1874    checkpoint48f_post
1875    Merging from release1_p12:
1876    o Modifications for using pkg/exf with pkg/seaice
1877      - improved description of the various forcing configurations
1878      - added basic radiation bulk formulae to pkg/exf
1879      - units/sign fix for evap computation in exf_getffields.F
1880      - updated verification/global_with_exf/results/output.txt
1881    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1882      (SBO) core products, including oceanic mass, center-of-mass,
1883      angular, and bottom pressure (see pkg/sbo/README.sbo).
1884    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1885      to avoid negative values in shallow regions.
1886      - updated verification/natl_box/results/output.txt
1887      - updated verification/lab_sea/results/output.txt
1888    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1889    o Added useSingleCpuIO option (see PARAMS.h).
1890    o Updated useSingleCpuIO option in mdsio_writefield.F to
1891      work with multi-field files, e.g., for single-file pickup.
1892    o pkg/seaice:
1893      - bug fix in growth.F: QNET for no shortwave case
1894      - added HeffFile for specifying initial sea-ice thickness
1895      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1896    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1897      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1898    o pkg/seaice:
1899      - adjoint-friendly modifications
1900      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1901    
1902    checkpoint48e_post
1903    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1904    o dynamics: change definition of computational domain & adapt mom_fluxform
1905      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1906    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1907        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1908        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1909        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1910        inverted_barometer solid-body.cs-32x32x1
1911      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1912    
1913    checkpoint48d_post
1914    o in preparation for r*:
1915     a) use pre-computed gradient of hydrostatic potential:
1916        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1917     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1918        => affects results of glob_oce_pressure (different truncation error)  
1919      update output.txt of ideal_2D_oce & global_ocean_pressure
1920    
1921    checkpoint48d_pre
1922    o in preparation for r*:
1923      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1924      pass the 2 comp. of the grad. as arguments to momentum S/R.
1925      but for the moment, only used if it does not change the results.
1926    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1927    
1928    checkpoint48c_post
1929    Modifications in treatment of initial flux forcing controls
1930    to avoid extra storing of flux fields.
1931    
1932    checkpoint48c_pre
1933    o Added tidal_basin_2d experiment (currently 1D!)
1934    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
1935    
1936    checkpoint48b_post
1937    o r* coordinate added in #ifdef NONLIN_FRSURF block.
1938     (modification to pressure gradient not yet implemented)
1939    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
1940      (for U & V) that are used for vertical advection of momentum.
1941    
1942    checkpoint48a_post
1943    o In preparation for r*, use temp. array to compute vertical transport
1944       in flux-form momentum pkg. => change results of few test-exp.
1945      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
1946                        lab_sea, natl_box & plume_on_slope
1947    
1948    checkpoint48
1949    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
1950    
1951    checkpoint47j_post
1952    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
1953    o moved adexch from forward_step to addummy_in_stepping
1954    o added exch in ctrl_map_...
1955    o aveFreq.=0. at end of cost_final to avoid overwrite in
1956      reverse checkpointing loop
1957    o Yet more changes in gmredi:
1958      * adgmredi_calc_tensor
1959        avoiding all recomputation of gmredi_slope_limit
1960      * adgmredi_x/y/rtransport
1961        added flag for excessive storing to avoid recomp. of
1962        u/v/rtans, dTdx/y/z
1963        -> this is not really necessary and very memory-consuming
1964      * adgmredi_slope_psi:
1965        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
1966      * gmredi_slope_limit
1967        re-activated full calculation of taperfct for case 'ac02'
1968    o updating verification/ adjoints of carbon, global_ocean.90x40x15
1969    
1970    checkpoint47i_post
1971    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
1972    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
1973      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
1974    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
1975    o gmredi: fix few bugs.
1976    
1977    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
1978    This will be a good checkpoint to plug into the ecco-branch.
1979    o few modif.'s to get latest version adjointed
1980      (mainly kick out code in ini_linear_phisurf)
1981    o modif's to run adjoint with exactConserv
1982    o case GM_BOLUS_ADVEC should be cleaned
1983      S/R gmredi_slope_psi should be cleaned
1984    o verification/carbon now has exactConserv=.TRUE.
1985    
1986    checkpoint47g_post
1987    o time-average AIM output: becomes independent from statvars time-average
1988      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
1989    o After TAF bug fix:
1990      Tested adjoint of gmredi package.
1991      Tests were done with checkpoint47 rather than with latest
1992      checkpoint47f_post since the latter is broken for the adjoint
1993      verification/carbon/ contains both ADM and TLM gradient checks.
1994    Here they are, before they get changed/lost/stolen.
1995    Mostly modif.'s to fix numerical sensitivities.
1996    Gradient checks OK for
1997    - GM_taper_scheme:
1998      * clipping
1999      * ac02
2000      * linear
2001      * glw91
2002      * dm95
2003      * ldd97
2004    - GMREDI_OPTIONS:
2005      * GM_VISBECK_VARIABLE_K
2006      * GM_NON_UNITY_DIAGONAL
2007      * GM_EXTRA_DIAGONAL
2008      * GM_BOLUS_ADVEC
2009    in conjunction with data.gmredi parameters to be checked in
2010    in a few minutes under verification/carbon/code/
2011    
2012    checkpoint47f_post
2013    Merging from release1_p10:
2014    o modifications for using pkg/exf with pkg/seaice
2015      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2016        and SEAICE_EXTERNAL_FLUXES
2017      - pkg/exf CPP options EXF_READ_EVAP and
2018        EXF_NO_BULK_COMPUTATIONS
2019      - usage examples are Experiments 8 and 9 in
2020        verification/lab_sea/README
2021      - verification/lab_sea default experiment now uses
2022        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2023    
2024    checkpoint47e_post
2025    o created a tag prior to creating a branch
2026    
2027    checkpoint47d_post
2028    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2029      at the bottom boundary had an erroneous half slip boundary condition
2030    o added bottom drag and no slip boundary condition capabilities to
2031      oceanic pressure coordinates code
2032    o added new verification experiment global_ocean_pressure, this experiment is
2033      also described in the tutorial section of the manual
2034    checkpoint47d_pre
2035    
2036    checkpoint47c_post
2037    o Added a verification experiment for a global cubed-sphere ocean run
2038      -  verification/global_ocean.cubed32x32x30
2039      -  uses pkg/therm_seaice and pkg/bulk_forcing
2040    
2041    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2042    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2043      when using P-coordinate; only implemented for atmospheric config.
2044    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2045      NOTES: requires option NONLIN_FRSURF to be "#define".
2046    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2047    
2048    checkpoint47b_post
2049    Merging from release1_p9:
2050    o pkg/seaice
2051      - removed GOTO's and added taf directives
2052      - double precision constants to reduce the g77 (Linux)
2053        to F77 (SGI) differences reported in release1_p8
2054    o tools/genmake
2055      - added SGI options
2056    o verification/testscript
2057      - updated to that of checkpoint47a_post
2058    o verification/global_ocean.90x40x15/input/eedata
2059      - modified for SGI f77 compatibility
2060    o verification/lab_sea
2061      - added description of sea-ice model
2062      - added missing matlab routines
2063      - added test of thermodynamics parallelization
2064    
2065    checkpoint47a_post
2066    o new pkg: aim_v23
2067     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2068       for now, keep the same surface forcing as before.
2069     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2070     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2071     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2072    o add diagnostic of surface correction term in monitor output
2073    
2074    o bulk_force and therm_seaice
2075    - Two packages:  bulk_force (Bulk forcing)
2076      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2077    - Earlier integration from Stephaine Dutkiewicz
2078      and Patrick Heimbach.
2079    - Two ifdef statements for compile time,
2080       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2081    
2082    checkpoint47
2083    differentiable version of checkpoint46n_post
2084    o bug fix in quasihydrostaticterms
2085    o * "clean" adjoint code (in terms of extensive recomputations)
2086        can now be obtained for all GMREDI options (i.e. for
2087        - GM_VISBECK_VARIABLE_K
2088        - GM_NON_UNITY_DIAGONAL
2089        - GM_EXTRA_DIAGONAL
2090        - GM_BOLUS_ADVEC )
2091      * However, wrong gradient check problem remains unsolved.
2092      * New CPP options have been introduced for different
2093        tapering schemes
2094    o external_fields_load now part of differentiation list
2095    o pressure needs multiple storing;
2096      would be nice to have store_pressure at beginning or
2097      end of forward_step, e.g. by having phiHyd global (5-dim.)
2098      (NB: pressure is needed for certain cases in find_rho,
2099      which is also invoked through convective_adjustment).
2100    o recomputations in find_rho for cases
2101     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2102    o #define ATMOSPHERIC_LOADING should be differentiable
2103    o ini_forcing shifted to begining of initialise_varia
2104    o Incorporating QNVS line search routines into MITgcm
2105      (this is separate code, and therefore not under pkg)
2106      lsopt/, optim/
2107    o Updated verification/carbon/
2108      - #define GM_VISBECK_VARIABLE_K
2109      - GM_taper_scheme    = 'ldd97'    
2110    
2111    checkpoint46n_post
2112    Merging from release1_p8:
2113    o verification/natl_box:
2114      updating new external_fields_load routine
2115    o New package: pkg/seaice
2116      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2117      The sea-ice code is based on Hibler (1979-1980).
2118      Two sea-ice dynamic solvers, ADI and LSR, are included.
2119      In addition to computing prognostic sea-ice variables and diagnosing
2120      the forcing/external data fields that drive the ocean model,
2121      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2122      The implied surface heat flux is then stored in variable
2123      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2124      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2125      non-local transport term.  Because this call precedes model
2126      thermodynamics, temperature under sea-ice may not be "exactly" at
2127      the freezing point by the time theta is dumped or time-averaged.
2128      N.B.: fairly large differences in accuracy occur across
2129            different platforms/compilers; comparison between
2130            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2131            generated output gives:
2132       T           S           U           V
2133      C D M    c        m  s        m  s        m  s        m  s
2134      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2135      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2136      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2137    
2138      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2139    o GAD:
2140      - generated new common blocks to account for call of
2141        same gad routines with differing traceridentities
2142        (needed to modify tracerIdentity indices in GAD.h)
2143      - generated separate common blocks for case useCubedSphereExchange
2144        (Department of Futurology)
2145      - parameter lists to gmredi_?transport: added tracerIdentity
2146      - added new key indices to tamc.h
2147    o external_fields_load:
2148      - added this routine to TAF list
2149      - needed to make some common blocks global and additional storing
2150        along the same lines as exf package (checkpoint_lev?_directives.h)
2151    o exf:
2152      updated external forcing package
2153      - bug fixes carried over from ecco-branch
2154        (missing OBCS_OPTIONS.h in two routines)
2155      - enable easy to use "no forcing".
2156      - added exf I/O for atmospheric loading
2157      - added exf I/O for runoff data
2158      - transfered scaling between exf <-> MITgcm to exf namelist
2159    o Adding new verification experiment global_with_exf.
2160      This verification experiment is almost identical to the
2161      global_ocean.90x40x15 experiment, except that it uses
2162      the exf (and cal) package instead of the
2163      external_fields_load routine (cf README file).
2164    
2165    checkpoint46m_post
2166    o modified testscript to return -- when there are no lines of "%MON" output
2167    o added new flag "quasiHydrostatic" for QH mode
2168      and new routine quasihydrostaticterms()
2169    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2170      New routine: mom_u_coriolis_nh()
2171    o fixed sign of non-hydrostatic metric terms in u and v equations.
2172      Depend on correct sign of gravitySign.
2173    o added work.pc* to .cvsignore in aim directories using ifc
2174    o introduced flag for controllin non-hydrostatic metric terms
2175    o removed gravitySign from PARM04
2176    o switched to g77/ifc from pgf77 in aim experiments
2177    
2178    checkpoint46l_post
2179    o made convective adjustment work with pressure coordinates:
2180     - changed the direction of k-loop in convective_adjustment.F for the
2181       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2182     - adjusted the reference pressure k-index in convective_adjustment.F
2183     - adjusted the convection condition in convect.F (in analogy to
2184       calc_ivdc.F)
2185     - convective_adjustment no longer computes anything on the halos
2186     - removed the warnings about negative salinity from find_rho.F and
2187       find_alpha.F; instead the new routine look_for_neg_salinity, called
2188       at the beginning of find_rho, find_alpha, and find_beta, does a
2189       check of the entire slice, if CPP-option
2190       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2191    checkpoint46l_pre
2192    
2193    checkpoint46k_post
2194    o fixed the verification/global_ocean.90x40x15 experiment:
2195     - new bathymetry (the world according to A., JMC, and M.)
2196     - new initial fields and forcing fields (*.bin files)
2197     - new POLY3.COEFFS (for the next release one should switch to a full
2198       equation of state: JMD95P or MDJWF)
2199     - fixed several errors and redundancies in the data file
2200     - experiment uses looped cells
2201     - added matlab directory with diagnostic scripts for plotting of output
2202    
2203    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2204     - read AIM physics parameters from a file (data.aimphys)
2205     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2206    
2207    checkpoint46j_post
2208    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2209    o move wVel computation at the end of the time step, in S/R integr_continuity
2210    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2211    o update timeave pkg for wVel diagnostic.
2212    checkpoint46j_pre
2213    
2214    checkpoint46i_post
2215    o Clean up AIM package (and keep the results unchanged):
2216      include CPP_OPTION and use IMPLICT NONE in all routines ;
2217      declare all the variables _RL ; use _d 0 for all numerical constants.
2218      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2219    
2220    checkpoint46h_post
2221    o cleaned up the use of rhoNil and rhoConst.
2222      - rhoNil should only appear in the LINEAR equation of state, everywhere
2223        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2224        and the dynamical equations are all divided by rhoConst
2225    o introduced new parameter rhoConstFresh, a reference density of fresh
2226      water, to remove the fresh water flux's dependence on rhoNil. The default
2227      value is 999.8 kg/m^3
2228    o cleanup up external_forcing.F and external_forcing_surf.F
2229      - can now be used by both OCEANIC and OCEANICP
2230    checkpoint46h_pre
2231    
2232     Added code to convert surface volume flux (fresh water) into
2233     a mass flux when using P coordinates in the ocean (OCEANICP).
2234     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2235    
2236    checkpoint46g_post
2237    o Include a new diagnostic variable phiHydLow for the ocean model
2238      - in z-coordinates, it is the bottom pressure anomaly
2239      - in p-coordinates, it is the sea surface elevation
2240      - in both cases, these variable have global drift, reflecting the mass
2241        drift in z-coordinates and the volume drift in p-coordinates
2242      - included time averaging for phiHydLow, be aware of the drift!
2243    o depth-dependent computation of Bo_surf for pressure coordinates
2244      in the ocean (buoyancyRelation='OCEANICP')
2245      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2246        Theta, Salinity, and Pressure in the parameter list. This routine is
2247        presently contained in find_rho.F. This routine does not give the
2248        correct density for 'POLY3', which would be a z-dependent reference
2249        density.
2250    o cleaned up find_rho
2251      - removed obsolete 'eqn' from the parameter list.
2252    o added two new verification experiments: gop and goz
2253      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2254    checkpoint46g_pre
2255    
2256    checkpoint46f_post
2257    o Enable tangent linear (forward mode) gradient checks:
2258      - extended active file handling to g_... files
2259      - added TANGENT_SIMULATION to theSimulationMode
2260      - extended grdchk package accordingly
2261    o added tangent linear setup in verification/carbon/code_ftl
2262    o added adjoint setup in verification/front_relax/code_ad
2263    
2264    checkpoint46e_post
2265    o Added new equation of state -> MDJWF
2266      - EOS of McDougall et al., 2002, JAOT, submitted
2267      - caveat: the equation of state is only valid for a smaller (more
2268        realistic?) range of values than JMD95P/Z and UNESCO
2269      - added masks to the calculation of pressure in store_pressure
2270      - added more check values for density in check_eos (ini_eos.F), some of
2271        the old check values are out of the range of the MDJWF-eos, so don't
2272        expect perfect matches for those
2273    checkpoint46e_pre
2274    
2275    checkpoint46d_post
2276    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2277      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2278      case of pressure coordinates. eosType='JMD95Z' in
2279      combination with buoyancyRelation='OCEANICP' now causes an error.
2280    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2281      in find_alpha/beta.
2282    checkpoint46d_pre
2283    
2284    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2285      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2286    
2287    checkpoint46c_post
2288    o Changes necessary for ocean in p-coordinates
2289     -  Added new buoyancy relation = 'OCEANICP'
2290     -  Added new parameters = gravitySign (this used to be contained inside
2291        the factor dRdZ which I added when we first switched to R coordinates).
2292     X GM/Redi is not compatible (yet)
2293     X bottom drag and no-slip need to be debugged.
2294    checkpoint46c_pre
2295    
2296    checkpoint46b_post
2297    o Added new equation of state -> JMD95Z and JMD95P
2298      - EOS of Jackett and McDougall, 1995, JAOT
2299      - moved all EOS parameters into EOS.h
2300      - new routines ini_eos.F, store_pressure.F
2301    o Added UNESCO EOS, but not recommended because it requires
2302      in-situ temperature (see JMD95)
2303    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2304      unesco.f to be used with POLY3
2305    checkpoint46b_pre
2306    
2307    checkpoint46a_post
2308    o Added (atmospheric) pressure loading
2309      - new field in FFIELDS.h, etc...
2310      - new cpp flag ATMOSPHERIC_LOADING
2311    o Changed hFacC to _hFacC in calc_phi_hyd.F
2312    o Added SHORTWAVE_HEATING to some files for consistency
2313    checkpoint46a_pre
2314    
2315    checkpoint46
2316    further merges from release1_p5
2317    o new ctrl package
2318      - adopted from ECCO environment to enable optimization
2319      - added Eliassen Palm fluxes to controls
2320    o added Eliassen Palm flux controls to gradient check package
2321    o cost package
2322      - Compatible with new ctrl package
2323      - added Eliassen Palm cost hooks
2324      - modif's of existing cost functions
2325    o Adjoint-related bug fixes in kpp:
2326      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2327      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2328    o autodiff package
2329      - flow directives:
2330        + new for S/R do_the_model_io
2331        + enhanced for S/R checkpoint
2332        + new gmredi.flow
2333      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2334        disable adcommon.h/g_common.h by default.
2335      - fixed problem for adjoint of global_max
2336    o modified verification/carbon/
2337    o New setup for adjoint of global_ocean
2338    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2339    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2340    o incorporated hooks for sponge layer code (external_forcing.F)
2341    
2342    checkpoint45d_post
2343    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2344    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2345      (affects plume_on_slope "cg2d" output)
2346    o add new parameter deltaTfreesurf for free-surface time stepping
2347    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2348    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2349    o change phiMin in exp1 (to agree with documentation)
2350    o add new flags:
2351     - T,S forcing inside/outside Adams-Bashforth
2352     - turn off temp,salt advection and/or forcing
2353     - for each tracer, define internal flag for multiDimAdvection & A-B
2354    o monitor: change definition of KE to check conservation of Energy
2355    
2356    checkpoint45c_post
2357    o Removed f90 comments ("!")
2358    o Modified initialisations to enable exf package for MITgcm
2359      (without invoking ECCO_PACKAGE).
2360    o modifications to gradient check package (Martin Losch)
2361      - enable centered differences
2362      - modified format of standard output
2363    
2364    checkpoint45b_post
2365    o cleaned exchange calls in cg2d
2366    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2367    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2368      to configure barotropic setup (Martin Losch)
2369    o moved some initialisations within bi,bj loop in dynamics
2370      (TAF flow dependency)
2371    o in initialise_varia, moved call packages_init_variables
2372      before convective_adjustment_init
2373      (corresponding adjustment of TAF tape initialisation).
2374    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2375    
2376    checkpoint45a_post
2377    o compute Rho over the whole domain (extend iMin,jMin indices)
2378    o specific exchange for X-slice domain (case Ny=1)
2379    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2380    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2381    
2382    checkpoint44h_post = checkpoint45
2383    o Fix to restore differentiability:
2384      place at which packages_init_variables is called in
2385      initialise_varia is crucial for reverse control flow.
2386    o modifications in GMRedi to enable stable adjoint
2387      (corresponding modif's in thermodynamics, dynamics)
2388    o added missing hook for sponge layer code in external_forcing
2389    o modified test cost functions
2390    o storing in gad_advection (plus removal of write(0,*)!
2391    o missing headers TR1.h added in convective_adjustment routines
2392    o errorMessageUnit set non-equal zero in eeboot
2393      (conflict on some platforms, e.g. IBM SP3)
2394    o modified carbon verif.
2395    
2396    checkpoint44h_pre
2397    o vertical grid option: allow to put the Interface at the middle between
2398      2 cell-centers ; replace delZ in pkg/kpp by drF.
2399    o GM Advective form: Tracers are advected using the residual transport (=
2400      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2401    
2402    checkpoint44g_post
2403    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2404      results) ; ifdef missing in thermodynamics.F
2405    
2406    checkpoint44f_pre,checkpoint44f_post
2407    o added PTRACERS package
2408      This allows an arbitrary number of passive tracers to be integrated
2409      forward simultaneously with the dynamicaly model.
2410      + Implemented so far:
2411        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2412        - I/O and checkpointing
2413        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2414      + Not implemented so far:
2415        - KPP
2416        - OBCS
2417      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2418        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2419        line in data.pkg.
2420      + This package is disabled by default since it increases storage.
2421    
2422    
2423    o testscript: added -cleanup option
2424    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2425                 b) enable to filter 2D fields.
2426    
2427    checkpoint44e_pre,post
2428    o re-wrote convective adjustment to use pre-calculated weights
2429      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2430      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2431      Original calls to convect() still in place.
2432    
2433    chkpt44d_pre,post
2434    o added missing EXCLUDE_MONITOR flags
2435    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2436      (incompatible typ in MIN/MAX expressions caused problems
2437      on IBM SP3)
2438    o in genmake added variable MAKEDEPEND
2439      plus resetting for case SunOS
2440    o added timer_stats.c routine for IBM SP3
2441    o removed variables in dynamics
2442    !!! I forgot to create tag chkpt44d_pre !!!
2443    !!! But chkpt44d_pre = chkpt44c_post    !!!
2444    
2445    o real fresh water flux implemented with non-linear free-surface.
2446    
2447    chkpt44c_pre,post
2448    o few fix (mask in shap_s2, EmPmR in external_field_load,
2449      USE_NATURAL_BCS in solve_for_P);
2450    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2451    
2452    checkpoint44b_pre/_post
2453    o merge of relevant stuff from the ecco-branch:
2454      - genmake: removed $S64 overwrite for case SunOS
2455      - pkg/exf: update and corrections for field swapping and obcs
2456      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2457                  harmonized between ECCO and MITgcm
2458      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2459                      updated checkpointing_lev... lists for obcs
2460      - model/src: minor changes in forward_step, plot_field
2461                   added directive for divided adjoint in the_main_loop
2462      - pkg/mdsio: added mdsio_gl_slice
2463    
2464    o check parameters & config (chkpt44a_pre,post)
2465    o OBC and NonLin_FrSurf.
2466    
2467    checkpoint44
2468    o fix bug in mom_vi_del2uv
2469    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2470    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2471    o update AIM experiments (NCEP input files)
2472    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2473    o added some stuff for AD
2474    
2475    checkpoint43
2476    o added two new advection tests
2477    o added global 4x4 degree ocean test
2478    o added test of H&S94 with free surface on cube
2479    o some final mods for gradient check, adjoint,...
2480    
2481    checkpoint42
2482      Fixed AD-related problems:
2483    o Store directives up-to-date with re-arranged Adams-Bashforth
2484      (mainly thermodynamics.F)
2485    o New store directives for multi-dim. advection schemes
2486      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2487      * new common block and key passkey
2488      (mainly gad_advection.F)
2489    o Modified store directives for split of dynamics/thermodynamics
2490      for the case ALLOW_KPP
2491    o Cleaned argument list for timestep_tracer.F
2492    
2493    checkpoint41
2494    o re-formatted/added comments in prologues of key subroutines
2495      to work with protex
2496    
2497    checkpoint40
2498    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2499    o added FLT (floats) package from Arne along with demo. experiment
2500    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2501      implementation of forward-in-time forcing terms
2502    o more mods for non-linear free-surface including new variable
2503    o modified multi-dim method to work on cube
2504    o bug fix in KPP (from DM)
2505    
2506    checkpoint40pre9
2507    o added DST advection schemes
2508    o fix MPI bug on SGI's
2509    o modifications for non-linear free-surface
2510    o fixed conditionals for fixed flow/passive tracer only mode
2511    o added tension/strain form of stress tensor
2512    o changes to commenting of arguments for TAF/TAMC
2513    o added/updated many matlab scripts
2514    o added multi-dimensional advection method for tracers
2515      
2516    checkpoint40pre8
2517    o new package rw/
2518      Added method for dumping intermediate local arrays:
2519      mdsio_writetile - same as mdsio_writefield except works from inside
2520                        bi,bj loop
2521      mdsio_writelocal - same as mdsio_writetile except works for local
2522                         arrays
2523      write_local_r? - higher-level wrapper for mdsio_writelocal
2524      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2525      Example given at end of mom_vecinv.F that dumps some local arrays.
2526    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2527      control flux-form versus vector invariant code.
2528      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2529      or genmake -DISABLE ...
2530    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2531      (additional storing is now needed for case vecinv;
2532      currently nothing implemented to switch this storing off
2533      in case fluxform is used since no CPP flag available).
2534    
2535    checkpoint40pre7
2536    o bug fix in dynamics.F
2537      calc_viscosity called before k=1,Nr loop.
2538    o added some #ifdef's ALLOW_PASSIVE_TRACER
2539    o cleaned initialisations in ctrl_map_ini
2540      related to TAF
2541    
2542    checkpoint40pre6
2543    o split dynamics into thermodynamics & dynamics
2544    o corresponding split of calc_diffusivity into
2545      calc_diffusivity, calc_viscosity
2546      (kpp_calc_diff, kpp_calc_visc).
2547    o Added diffkr, kapgm to control variables
2548    o bug fix in gmredi_slope_limit for ldd97
2549    
2550    checkpoint40pre5
2551    o proper initialization of Adams-Bashforth time stepping
2552      + uses forward step for very first step of model (iter=0)
2553    o re-generated *all* output since almost all output is modified by this
2554      change (sorry but we've been putting this one off for about 2 years)
2555      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2556        *not* regenerated since they are already out of date and I don't
2557        want to create the impression that they are suddenly working.
2558    o removed KAP stuff for DEC's
2559    o modified/added many .cvsignore files in */code and */input
2560    o added new expt "solid-body.cs-32x32x1"
2561      + this uses an alternative form of ini_curvilinear_grid.F which
2562        is not necessarily any better than the current one...
2563    
2564    checkpoint40pre4
2565    o added re-initialisations of utrans,vtrans,rtrans in
2566      calc_common_factors which are crucial for TAF.
2567    o extended iMin,jMin range for calc_common_factors,
2568      calc_diffusivity
2569    o added option ALLOW_PASSIVE_TRACER
2570    o a few minor updates and fixes
2571    
2572    checkpoint40pre3
2573    o created calc_gtr1.F for gad package
2574    o split the_main_loop and re-introduced forward_step
2575    o some recomputations of nIter0 for TAMC
2576    
2577  checkpoint40pre2  checkpoint40pre2
2578  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
2579  o Added gradient check package  o Added gradient check package

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