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revision 1.32 by adcroft, Thu Nov 30 16:51:40 2000 UTC revision 1.667 by mlosch, Tue Jun 6 22:17:27 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 pkg/ggl90:
8      - add parameter (minimum surface kinetic energy)
9      - fix bug (avoiding division by zero)
10    o couple pkg/thsice to pkg/seaice:
11      - modify advection in seaice to accomodate new scalar fields to be advected
12      - only muliDimAdection scheme work with seaice/thsice
13      - mapping of thsice-variables to seaice-variables, back and forth
14      - does not break the verification experiments, but does not give the
15        desired results either
16    o pkg/seaice
17      - make (default) second order advection a bit less confusing?
18    
19    checkpoint58f_post
20    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
21      to pkg/seaice):
22      - new routines thsice_map_exf and thsice_get_exf provide the interface
23      - add an additional formal parameter to thsice_solve4temp
24    o pkg/exf:
25      - add new fields wspeed, snowprecip (to be able to couple to thsice)
26      - correct Stefan-Boltzmann constant
27      - new parameter for longwave surface emittance
28      - separate some stuff from exf_bulkformulae into new routines  
29        exf_radiation, exf_wind
30      - add new parameters and constants: longwave emissivity for ocean, ice
31        and snow, evaporation parameters over ice
32      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
33        either wind from stress or stress from wind
34    o pkg/thSIce:
35    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
36    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
37       and THSICE_CALC_THICKN
38    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
39    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
40      to make debugging easier.
41    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
42    o pkg/bulk_force:
43      - clean-up comments and parameters ;
44      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
45    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
46      generate new output for test-experiment: aim.5l_cs.thSI
47    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
48      testreport accordingly
49    
50    checkpoint58e_post
51    o SEAICE_CGRID adjoint done
52    o R_STAR adjoint implemented.
53      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
54      * need to sort out init. of h0facc, etc.
55    o Make pkg/profile fully independent of ecco,cost, etc. stuff
56      to be able to use it in pure forward.
57    
58    checkpoint58d_post
59    o upgrade simple test-experiment to tutorial example:
60     step.1: duplicate the experiment and (step.2) will remove the old copy.
61      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
62      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
63      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
64      tutorial_global_oce_biogeo    <- copy of dic_example
65      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
66      tutorial_plume_on_slope       <- copy of plume_on_slope
67      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
68      tutorial_global_oce_optim     <- empty for now (David ?)
69      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
70     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
71    o correct a sign problem in cost_scat.F
72    o obcs and ptracers: fix boundary conditions for advections schemes
73      with larger stencil
74    o thsice adjoint: start
75    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
76      completeness
77    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
78      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
79    o ptracers adjoint:
80      * avoid extensive recomputatations
81      * fix missing re-init. of gptr (missed by TAF)
82    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
83      me to turn off the excessive output to STDOUT that this package produces
84    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
85      and add those terms in Vector-Invariant formulation.
86    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
87      if the control period (xx_hfluxperiod etc) is 0
88    o in profiles pkg, clean routines and fix details
89    o in ecco pkg, reading ssh data:
90      fix problem in case the model does not start at iter0=0
91    o fix mnc-pickup/restart for ptracers
92    o new package prifiles:
93      code to compute profile-based cost by Gael Forget
94      (modifs in ecco, ctrl, autodiff)
95    o Benign bug fix in initialization (spotted by M. Mazloff) of
96      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
97    
98    checkpoint58c_post
99    o adjoint: finish NLFS adjoint and provide reference output in
100      verification/global_ocean.90x40x15/results_ad_nlfs
101    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
102      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
103      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
104      with SEAICE_CGRID defined.
105    o move calendarDumps from "data" to "data.cal" and clean-up the code
106      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
107    o add useEXF & useCAL flags (for now, set in hard-coded way)
108    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
109      (were missing in NH mode, and wrong in quasihydrostatic mode).
110      waiting for Chris updated version of calc_gw to add those CALLs.
111    o fix bug in quasihydrostatic S/R ;
112      add a test for this option: global_ocean.90x40x15.qshyd
113    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
114      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
115    o add on/off flag useOffLine for package OFFLINE
116    o seaice:
117      - modify advection so that it works also on the C-grid
118      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
119        problem in multi-tile runs with C-grid
120      - add flags for clipping ice velocities and/or masking solver forcing
121      - fix drag (ocean on ice) formulation and a bug that caused noise in the
122        C-grid solver
123      - added a few comments to seaice_diffusion.F
124      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
125        are now exclusive)
126      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
127        required re-ordering the code a little:
128       + make DAIRN global variable (defined in SEAICE)
129       + move computation of the viscosities eta and zeta into a new separate
130         routine (because I need to recompute them in seaice_ocean_stress.F)
131    
132    checkpoint58b_post
133    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
134      update output.txt of exp. aim.5l_cs.thSI
135    o various mnc cleanups and improvements:
136      + shrink lookup tables by factor of ~4
137      + better error reporting when running out of lookup space
138      + able to handle longer path/file names (up to 500 chars)
139    o adjoint:
140      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
141      - TBD: "hidden" mom_vecinv recomp. in dynamics
142    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
143     (allow to differentiate between forcing components using new integer flags:
144      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
145     and add new flag to put Dissipation tendency out of Adams-Bashforth.
146    o ecco
147      - enable trend removal from SSH anomaly obs.
148    o adjoint
149      - a fix for PmEpR when #undef EXACT_CONSERV
150      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
151      - try to fix "hidden" recomp. in forward_step for NLFS
152        (NLFS seems broken sometimes after I checked it in)
153    o seaice:
154     - add c-grid version of the dynamic solver:
155       + three new routines that are the c-grid substitute lsr, dynsolver
156         and ostres
157       + put a few fields that were local to dynsolver into global common
158         blocks, so that I can move the computation of stresses etc into
159         seaice_lsr (saves coding but may break the adjoint).
160     - replace more hardwired parameters by runtime parameters
161     - add ice masks that mask the rhs of the implicit solvers where there
162       is no ice (commented out in seaice_dynsolver, because i am not sure
163       if this works properly), eventually this should replace the clipping
164       of ice velocities in seaice_dynsolver to +/-40cm/s.
165    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
166      include it only where its needed
167    o move balancing of fluxes before the call of external_forcing_surf
168    o seaice:
169      - correct units of turning angles (now they are really in degrees)
170      - move computation of GWATX/Y out of main routine into dynsolver
171      - initialize GWATX/Y in seaice_init
172    o Apply mask on Fresh-Water flux (needed for SSH forcing).
173      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
174    o seaice: add runtime flags for turning angles (default to zero)
175    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
176      and trend from exf forcing and ctrl control adjustments
177    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
178      (since checkpoint57x_post)
179    o change the default rotation period to 86164.s = the Earth rotation
180    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
181      and based on a reference stratification. Tested within hs94.cs-32x32x5.
182    o seaice advection: add code for choosing between the default (2nd order
183      central differences) and multiDim advection schemes provided by
184      pkg/generic_advdiff
185    o seaice:
186      - removed all references to SEAICE_GRID.h fields from
187        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
188        (cubed-sphere configuration will change a little)
189      - grid computations in seaice_init are obsolete now.
190      - cleaned up code a little so that is easier to read (hopefully).
191      - added new (better?) discretizations of default advection and diffusion
192        (turn on with SEAICEuseFluxForm)
193      - replace 1 in 3d global fields by kSurface in growth.F
194      
195    checkpoint58a_post
196    o seaice:
197      - bug fix in advect.F
198    o shelfice:
199      - separate shelfice load anomaly from pload (breaks with time
200        dependent forcing), => introduce constant field shelficeLoadAnomaly.
201        Its default is 0., but it may be computed more cleverly from (unknown)
202        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
203        done offline. A good approximation of the pressure load anomaly is
204        necessary to avoid large initial adjustment processes underneath
205        deep-reaching shelfice.
206      - small fix in ISOMIP shelfice_thermodynamics
207      - add more sophisticated thermodynamics of Hellmer (1989), this is
208        now the default
209      - give a few constants more intuitive names
210    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
211      if bulk formulae are used in long integration (especially EmPmR). Turn
212      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
213      if balancePrintMean, the imbalance that is substracted is printed to
214      STDOUT.
215    o fix bug (typo) in obcs_apply_eta.F
216    o add a new package shelfice which enables us to model the circulation
217      underneath shelf-ice with draughts of hundreds of meters.
218     - works
219     - to do: + include improved thermodynamics
220              + check whether kSurfC (from model/inc/SURFACE.h) can be used
221                instead of new field kTopC
222              + can we use topoFile, Ro_surf and existing code in ini_depth.F
223                instead of new field R_shelfIce and new code in ini_depth.F
224                and ini_mask_etc.F?
225              + adjust vertical mixing schemes?
226    o seaice pkg:
227     - add a cpp-flag to include a simple formula for a salinity dependent
228       freezing point of sea water at the surface
229     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
230       meridional stresses are now different (and hopefully correct)
231    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
232       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
233       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
234    o pkg/diagnostics: add options and parameters for regional-statistics
235       diagnostics ; define regions by reading a region-mask from a file
236       (might add other options later)
237    o pkg/bulk_force:
238     - add option and parameters to use AIM surface-flux formulae.
239     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
240       others forcing fields (defined in PARM05, parameter file "data") are loaded
241       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
242     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
243     - use the right EXCH call for uwind,vwind (to work on CS-grid).
244     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
245       and parameters (note: calcWindStress replaces .NOT.readwindstress).
246     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
247    
248    checkpoint58
249    o add "--embed-source" option to genmake2 which, when the supporting
250      tools can be compiled (as determined by genmake2) will turn on the
251      embed_files package which then embeds the entire MITgcm source code
252      (*.[fFhc] + Makefile) used for the build within the executable
253      - requested by CNH but off by default
254      - adds a paltry <9MB to the mitgcmuv executable in most cases
255      - only writes the output when useEMBEDSRC in eedata is true
256    o clean up 3-dim. relaxation codes:
257      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
258      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
259      * Thanks to Tom Haine for testing!
260    
261    checkpoint57z_post
262    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
263      affects output (@ truncation level) of exp. plume_on_slope ; updated.
264    o fix the pickup behavior for obcs in combination with ptracers
265    o fix a bug in ptracers_external_fields_load
266    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
267      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
268    o transfered surface NH pressure to eta field (if exactConserv).
269    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
270         and update lab_sea output.txt file.
271    o completing 3-dim. relaxation code: additional term
272         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
273      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
274      * At compile time, in "EXF_OPTIONS.h" set
275          #define  ALLOW_CLIMTEMP_RELAXATION
276          #define  ALLOW_CLIMSALT_RELAXATION
277      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
278          tauThetaClimRelax3Dim = 15552000.0,
279          tauSaltClimRelax3Dim  = 15552000.0,
280      * 3 cases:
281          1) Use a constant-in-time 3-dim. field
282          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
283          3) Real-time relax. to time-evolving prescribed field
284    o Adding Laplacian-type smoothness constraint on
285      initial and boundary (forcing) controls (ic, bc)
286      * enable at compile-time via
287        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
288      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
289      * Absolute scale somewhat unclear so far
290      * no area weighting was included since no other cost term does so far
291    
292    checkpoint57y_post
293    First step for a NLFS adjoint
294    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
295    o new init. routines for calc_r_star, calc_surf_dr
296    o still need to deal with ini_masks_etc
297    o testreport seemed happy
298    checkpoint57y_pre
299    
300    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
301    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
302    o add new offset feature to offline pkg (plus minor cleanup)
303    o cfc fixes for final year of integration
304    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
305      be in GCHEM_OPTIONS).
306    
307    checkpoint57x_post
308    o fix testreport Pb in multiple test experiment.
309    o cleanup our namelist syntax in verification:
310      - make it more F95 standards compliant (some work still needed)
311      - allows the vast majority of our tests to work with gfortran
312    o Non-Hydrostatic:
313     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
314     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
315    o Allow to apply AB on T,S rather than on AB(gT,gS):
316     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
317     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
318       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
319     - need a "clever" read_pickup to restart from the other AB formulation
320    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
321    o remove some unused variables (reduces number of compiler warnings)
322    o adjoint
323      * Disable useVariableViscosity for adjoint for time being
324        (there are a number of extensive recomputations)
325      * Initialize certain variables needed for adjoint
326    
327    checkpoint57w_post
328    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
329                 fix the singleCpuIO RS version of MDSWRITEFIELD
330       and add a WARNING if using globalFiles=T with multi-processors.
331    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
332      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
333    o tracer advection scheme:
334      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
335       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
336       was not very convenient).
337      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
338       (further tests needed for the implicit DST & Flux-Limiter schemes).
339    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
340      and sRef for convenience, handy, when you want to initialize
341      ptracers in a large domain with a constant non-zero value. Also,
342      untangle ptracers_init.F a little.
343    
344    checkpoint57v_post
345    o change dome exp. to use variable viscosity in side-drag terms.
346    o remove all the files from the cfc_offline test since they are now
347      incorporated into tutorial_cfc_offline which has been producing
348      identical results for a few days of testing
349    o add new parameter: sideDragFactor to enable half-slip-side BC
350      and change side-drag S/R to use viscosity from mom_calc_visc
351      (can switch back by setting sideDragFactor=0.); affects results at
352      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
353       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
354    o vorticity & strain are now computed without masking, to account for
355      no-slip-side BC in variable viscosity calculation ; mask is applied
356      anyway later on, before computing advection/coriolis terms.
357    o modify exp4 to test new obcs support for reading from external files
358      and for passive tracers
359    o fix behavior of ptracers_monitor when monitor output is written to a
360      netcdf-file; still not independent of monitor.F (writes in the same
361      file).
362    o change default value of tRef (put a uniform, meaningful value for ocean
363      & atmos) and initialize sRef (was missing, as Martin mentioned).
364    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
365      to be proportional to enstrophy dissipation length.  Thus,
366       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
367      This is now consistent with Smagorinsky and with the manual.
368    
369    checkpoint57u_post
370    o OBCS and PTRACERS: add open boundary support for passive tracers
371      - either use homogenous (pseudo) v.Neumann conditions or prescribe
372        OB-values from file; this is not different from the way theta and salinity
373        are treated
374      - however, Orlanski-radiation conditions are not supported, and the model
375        will stop if you use pTracers and Orlanski at the same time.
376      - beefed up the rountine obcs_external_fields_load: now only those open
377        boundary values are overwritten with values from files for which there
378        are really files, otherwise the OB-fields remain untouched. This makes
379        it possible to use different OBs at different ends of the domain (as
380        with EXF)
381    o reduce number of exch calls in shap_filt (s2).
382    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
383      truncation level) 4/5 MLAdjust test results (11&12 digits match).
384    
385    checkpoint57t_post
386    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
387    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
388      same truncation, independent of the face number: affects affects several
389      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
390    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
391      note that biharmonic viscosity + no-slip was not tested in any experiment.
392    o fix bug in non-linear free-surf side-drag ; generate new output for
393      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
394    o make mnc honor the writeBinaryPrec flag for most kinds of output
395    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
396    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
397      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
398    o add brackets in multi-terms sum to get same truncation, independent of
399      the face number (manage to get exactly same value of gU,gV at the cs-edge)
400      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
401    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
402      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
403      a maximum grid-scale Reynolds number.  Also, changes all length calculations
404      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
405      Suggested values of viscosity parameters found in mom_calc_visc.
406      Many new viscosity diagnostics available.
407    
408    checkpoint57s_post
409    o Add clearing-house for viscosity calculations, mom_calc_visc and
410      correct numerous bugs in LeithD and Smagorinsky discretizations.  
411      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
412      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
413      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
414      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
415      The Strain-Tension form is now called with useStrainTensonVisc=.true.
416      ViscAhStrain and viscAhTension are now retired.
417    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
418    o In response to JMC's bug report, genmake2 now ignores any soft-links
419      that it finds in the *current* directory when searching for files.
420      Soft-links found in any other source directories will still work as
421      they did before.
422    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
423      a C routine to unlimit the stack size
424    o mnc-ify pkg/aim snapshot vars
425    o mnc-ify pkg/land as requested by Daniel
426    o various changes to mnc including:
427      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
428      - output can now be grouped so that all files within a group
429          change the ITER portion of their names in lock-step together
430      - can now read ("global") PER-FACE (in addition to PER-TILE) files
431          and works with both EXCH1 and EXCH2 (but needs more testing)
432      - writing works for all verification test cases w/ g77 on Linux
433    
434    checkpoint57r_post
435    o make MNC variable initialization happen earlier
436    o add diagnostics for (almost) each term of the momentum Eq.
437    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
438    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
439    o remove MINIMAL_TAVE_OUTPUT option ;
440      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
441    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
442      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
443    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
444    o add time-dependent SST, SSS control
445    o cost terms in ecco/ modularized (new cost_generic.F)
446    o cost_averages routines are modularized (new cost_averagesgeneric.F)
447    o new infrastructure for seaice model vs. obs misfits in seaice/
448      * driver from the_main_loop.F is seaice_cost_driver.F
449      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
450      * gradient check in Exp. 6a of natl_box_adjoint/
451    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
452      (see README file)
453    
454    checkpoint57q_post
455    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
456    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
457      - bug was reported by Jean-Michel and Ian Fenty
458    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
459      update exp. cpl_aim+ocn output.
460    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
461      Needed for high-res. runs with large global files
462      to be able to limit tapelev size
463    o Changed some tests for adjoint:
464      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
465      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
466      * global_ocean.90x40x15/ back to default 3-level checkpointing
467    o Modifications to enable scripted COMMON to MODULE conversion
468      * verification/OpenAD/code/ has necessary scripts and description;
469      * converts, compiles and runs successfully;
470    
471    checkpoint57p_post
472    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
473    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
474      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
475    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
476    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
477      (was already the case for dissipation with mom_vecinv,
478       and also the case for grad.PhiHyd when staggered-timeStep)
479      This will allow to put dissipation out-off the AB time-stepping.
480     Unfortunately, affects truncation error. Update output of exp. that "fails"
481      (cg2d matching number) and leave the others for later: front_relax(10),
482      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
483      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
484    
485    checkpoint57o_post
486    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
487      (2) its ready to be documented during the 20050801 DocFest
488    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
489      for ideal_2D_oce and lab_sea on linux_ia32_g77
490    o set to #undef CTRL_SET_OLD_MAXCVARS_30
491      in global1x1_tot/code_seaice_adj to access indices 32, 33
492      (worth another tag)
493    
494    checkpoint57n_post
495    o adding precip control xx_precip 32
496    o adding swflux control xx_swflux 33
497    o Replacing 10 forcing penalty cost routines by 1 generic.
498    o Implementing partitioning in time-mean and variable adjustment
499      for atmos. state.
500    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
501    o in natl_box_adjoint:
502      * updated exp 1 to 10
503        (but does not have time-mean vs. variable split results yet)
504    o updated global1x1/*_seaice_adj/
505      to incorporate latest changes
506    o enable useSingleCpuIO for mdsio vector routines
507      (applies in particular to tapelev I/O)
508    o removed inefficient K-loop in all active_file*control*.F
509    
510    checkpoint57m_post
511    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
512      and advect_cs (use EXCH-2 and standard cs-32 grid files).
513    o pkg/exch2: filling of face-corner halo regions is optional
514      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
515    
516    checkpoint57l_post
517     tag before updating tutorials (pre-release-2)
518    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
519       for output and interpolation of input fields onto model grid)
520    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
521       Affects results of exp. rotating_tank ; update output.txt.
522    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
523          and taking the square quantity and/or using a fraction-weight field.
524    o fix aim_diagnostics_init.F mate numbers.
525    o add mnc output capability to diagnostics/diagstat and update
526      our cvsignore files for the ACSII output generated
527    
528    checkpoint57k_post
529    o lab_sea now uses diagnostics package and provides a suite of
530      new EXF diagnostics output.
531    
532    checkpoint57j_post
533    o exf
534      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
535        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
536        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
537      * extended diagnostics output
538        - now includes all EXF variables
539        - hs, hl moved to common block
540        - separate S/R for diagnostics, called after ctrl vector is added
541        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
542        - EXFqnet contains true Qnet (i.e. includes qsw)
543      * updated verif. lab_sea, global_with_exf
544      * Rearranging hflux (exf_mapfields -> exf_getforcing)
545        to ensure that diagnostics sees a true EXFqnet
546    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
547    o diagnostics pkg: change pointers so that 1 diagnostic can be used
548      several times with different frequencies.
549    o mnc-ify the thsice package as requested by Daniel Enderton
550      - the monitor--MNC output needs work
551      - many attributes need to be added (most are currently blank)
552    o mnc-ify theaim_v23 package as requested by Daniel Enderton
553      - many attributes need to be added (most are currently blank)
554    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
555    o add Sadourny like discretization to the 4th.O vorticity advection scheme
556    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
557      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
558         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
559    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
560     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
561    
562    checkpoint57i_post
563    o Diagnostics package was changed: diagnostic allocation is now deactivated
564      by setting an empty file name in the namelist (used to be by setting 0 frequency)
565    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
566      add 1rst Order upwind vertical Shear.
567    o add a quick fix for A/B checkpointing in OFFLINE mode
568    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
569      end-run around the C/Fortran linking horror in eesup/src/timers.F
570    o added pkg/runclock: allows user to terminate run based on wall clock
571    o added non-hydrostatic scaling parameter: nh_am2
572    o pkg/my82: futile attempt to make results compiler-independent by adding
573      some "_d 0", etc. no effect.
574    o for mnc output, fill the 'T' coordinate var with myTime and create a
575      separate 'iter' variable for iteration count
576    o pkg/diagnostics:
577      add new capability: output of Global/Regional & per-level statistics ;
578      tested against monitor output (including land & thSIce) on various exp.
579    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
580    
581    checkpoint57h_done
582      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
583      data.diagnostics, data.gchem, data.ptracers) is done.
584    
585    o pkg/diagnostics: prepare for Global/Regional statistics.
586      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
587    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
588      and rename it: DIFFERENT_MULTIPLE
589    
590    checkpoint57h_post
591    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
592    o pkg/diagnostics: change output frequency, now in seconds (instead
593      of Nb of iterations). This requires to change data.diagnostics.
594    checkpoint57h_pre
595    
596    o in mnc, let the user create the output dir if both mnc_outdir_date
597      and mnc_outdir_num are false
598    o add fflags() to pkg/diagnostics which allows one to specify, on a
599      per-file basis, the file precision [default behavior is unchanged]
600    o added diagnostics to pkg/kpp, including computation of mixed layer
601      depth based on a temperature/density criterion
602    o updated verification/natl_box to test the new pkg/kpp diagnostics
603    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
604    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
605    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
606      not mnc -- this mistake was found by JMC and is now corrected
607    
608    checkpoint57g_post
609    o add Adams-Bashforth 3rd Order time stepping:
610      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
611      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
612    checkpoint57g_pre
613    
614    o make lambda[Theta,Salt]ClimRelax spatially varying
615      (default remains spatially uniform constant based on tau)
616    o added new control variables
617      * init. uVel, vVel, etanN
618      * lambda[Theta,Salt]ClimRelax
619    o separate masks used for ctrl_pack/unpack 'from write_grid' output
620      (suggested by G. Forget)
621    
622    checkpoint57f_post
623    o add parameter "baseTime" = model base time = time at iteration zero
624      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
625      account for baseTime shift
626    o move Coriolis arrays from PARAMS.h to GRID.h
627    checkpoint57f_pre
628    
629    o mnc-ifying the seaice package
630    o introduced an alternative length scale calculation for use in the limiting
631      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
632    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
633    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
634      as well as grad(vort3).  Made it compatible with both approximate form
635      for the cubed sphere and full form of these gradients.  Added flag
636      useFullLeith to select between approximate and full form.  
637    o add "d0" in getcon.F to reduce differences between compilers/platforms
638      update output.txt of exp. fizhi-gridalt-hs
639    o change port_rand funtion to allow to set the seed.
640    o fix obscure MNC bug involving conversion between reals and integers
641      - it caused no problems with certain (eg. gcc, ifc) compilers but the
642        new version is now more standards-compliant
643    o adjoint-related modifications
644      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
645      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
646      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
647    
648    checkpoint57e_post
649    o Adding eddy stress controls a la Ferreira et al.
650    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
651    
652    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
653      update output.txt of exp. fizhi-gridalt-hs
654    o add more "Z" dimensions and associated coordinate vars to MNC
655    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
656    o parameter calendarDumps: when set, approximate months (30-31 days) and years
657      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
658      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
659      months and years.  Requires pkg/cal.
660    o diagnostics: add pickup functionality
661      - off by default for backwards compatibility
662      - current version only uses MDSIO -- MNC will be added
663    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
664    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
665    
666    checkpoint57d_post
667    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
668    o modify verification/ideal_2D_oce so that it tests the creation of mnc
669      output from the diagnostics package
670    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
671    o make genmake2 more portable by using ".$FS" instead of ".f" for more
672      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
673    o add coordinate variables to the MNC output from the diagnostics package
674    o change MNC-flags default value: true when useMNC=TRUE
675    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
676      the ability (off by default) to read the grid information using MNC
677    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
678    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
679    o do snap-shot diagnostics at the middle of the time-interval (instead of
680      at the end).
681    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
682      new test for AIM with thSIce + slab-ocean
683    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
684    o move state variable diagnostics to the beginning of the time step ;
685      (note: still needs some work specially for snap-shot diagnostics)
686      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
687    
688    checkpoint57c_post
689    o Change testing option (-ieee) to get closer agreement between g77 & ifort
690    o generate new output.txt files on faulks with g77 & the new -ieee option
691    checkpoint57c_pre
692    
693    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
694      update output.txt of exp. global_ocean.90x40x15
695    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
696      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
697    o add saltFlux(+File) forcing capability with periodicExternalForcing
698    o allow to use pkg diagnostics for GM-Redi & ThSIce output
699    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
700    o improvements for the MNC output from DIAGNOSTICS:
701      - correct handling of the unlimitied dimension
702      - all dims now have associated coordinate variables
703      - variables located at U, V, and Corner ("Z") points are now written
704        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
705        *all* data points are output
706    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
707    o added pkg/seaice/seaice_monitor.F
708    o mdsio_readfield.F can now read files visible only to master MPI process.
709    o pkg/seaice: some test code for ice-modified ocean stress
710    o exf_getffields interpolation defaults to bilinear for all scalar forcing
711      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
712      spurious negative numbers for precipitation and humidity.  Will cause
713      some small numerical differences for integrations using pkg/exf/exf_interp.F.
714    o pkg/ctrl/
715      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
716        May be enabled via doPackDiag
717      *  introduce z-scaling of
718         + gradient (doZscalePack) and
719         + control (doZscaleUnpack)
720    o pkg/mdsio/
721      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
722      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
723    
724    checkpoint57b_post
725    o simplify options in diagnostics_fill arguments (remove weird combinations)
726    o fix MNC coordinate variables so that they now contain per-face index
727      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
728      general, EXCH2 grids are only aligned to a "local" coordinate system
729    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
730    o Implement instantaneous output within pkg diagnostics:
731      setting a negative frequency in data.diagnostics produces
732     "snap-shot" output (as opposed to time-average if freq > 0)
733    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
734      NOTE: change ptracer diagnostics name: use 2 characters to work with
735            more than 9 tracers. Add also diagnostics of advect & diffus flux.
736    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
737      becomes the coordinate variable for the 'T' dimension
738    o add CF-style coordinate variables to MNC
739      - just a first cut:  numbers are meaningless on the cubesphere and
740        missing along the T axis but otherwise it works!
741    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
742    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
743    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
744      this is based directly on what the model compute, so that the content of
745      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
746    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
747    o clean up build options files for SunOS, in particular
748      - remove -traditional from xmakedepend
749      - change -xarch=v9 to -xarch=native for f77
750      - restore use of make (not gmake)
751      - add CC=gcc if using g77
752    o changes per discussion of AM, JMC, & EH3 today:
753      - move redundant "grid" variables out of "state" -- in preparation of
754        creating proper CF-style coordinate variables and in recognition
755        that any/all grid variables can be easily copied (eg. w/NCO) from
756        the grid files into any of the other NetCDF files
757      - *always* output grid variables with MDSIO (this will eventually be
758        changed)
759      - output MNC grid file if useMNC is true
760    o every instance of _END_MASTER() has been found and replaced with
761      _END_MASTER( myThid ) in order to satisfy certain picky Sun
762      preprocessors
763    o re-arrange diagnostics pkg initialisation:
764     - allow each package to extend the available diagnostics list
765     - add some checking and fix small problems (multi-threaded, ...)
766     - new S/R diagnostics_fill (replace fill_diagnostics):
767       look through the short list of active diag. (instead of the long list)
768       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
769    
770    checkpoint57a_post
771    o this set of changes restores TAMC compatibility
772      tested for global_ocean.90x40x15 adjoint on trough
773      (what a pain)
774    
775    checkpoint57a_pre
776    o some modifs in tools/build_options for sunos
777    o call ctrl_pack for ctrl at end for optimcycle=0
778    
779    checkpoint57
780    o add horizontal bi-harmonic viscosity for vertical velocity
781      - new parameter viscA4W (defaults to viscA4)
782      - affects only non-hydrostatic code
783      - to be done: no-slip lateral boundary conditions
784    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
785    o implement Implicit Vertical advection for pTracers
786    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
787      (implemented also for implicit vertical diffusion & advection)
788    o OBCS: extend application of tracer open boundary conditions
789      to a strip beyond the boundary of width Olx/Oly
790    o add call monitor to TAF set of required calls (flow directives)
791      and include in natl_box_adjoint
792    o untangle a few ifdefs related to cost, ctrl, autodiff
793      untangel a few ALLOW_ECCO_OPTIMIZATION
794    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
795      (theta2, salt2 in ecco_cost_weights)
796    
797    checkpoint56c_post
798    o OBCS as control variables
799      - update ctrl_ad_diff.list, obcs_ad_diff.list
800      - remove balance of obcs controls from default
801      - fix index bug nobcs in ctrl_init
802      - fix dummy fields filen in ctrl_pack
803      - add dummy weights for obcs
804    o lsopt: comment out fort.94 output
805    o optim:
806      - remove unnecessary header files
807      - adjusted namelists
808      - add xerbla.F to Makefile
809    o exf:
810      - multiple modifications of exf_check_range
811      - unit change in exf_init_runoff from [m/year] to [m/s]
812    o mdsio:
813      - i/o-vector change debugLevel from debLevA to debLevB
814    
815    checkpoint56b_post
816    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
817      is called from DO_THE_MODEL_IO
818      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
819      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
820      - clean up PTRACERS_WRITE_TIMEAVE a little
821    o add another verification experiment that tests both the cfc-pkg and
822      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
823      reactive tendencies treated inline with regular timestepping
824    o testreport previously did a lousy job of comparing small numbers, so
825      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
826      implemented in the little c-progam tmp_cmpnum.c which is embedded in
827      testreport.
828    o ptracers_monitor: bug fix for MPI
829    
830    checkpoint56a_post
831    o GCHEM: finish reorganizating the package
832      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
833        (introduces another 3D-array for each passive tracer, but only if
834        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
835        gchemTendency is not needed because the timestep is done separately)
836      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
837      - GCHEM is now---more or less cleanly---separate from PTRACERS
838      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
839        so clear to me how that should be done in a general way.
840    o CFC: improve formatting of output in CFC_ATMOS
841    o PTRACERS:
842      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
843        that ALL experiments with ptracers enable can be checked. This makes
844        GCHEM_MONITOR obsolete.
845      - include a runtime parameter PTRACERS_monitorFreq that defaults to
846        monitorFreq
847      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
848    o add PTRACERS (PTR0[1-5]) to testreport output
849    o exf_check_range:
850      * default changed to .TRUE.
851      * will check values for niter0 if debLevA, every timestep if debLevB
852      * STOP in exf_check_range if 'out of range'
853      * range chosen generous to allow for potential extema
854      TBD: a version with stricter range
855           permitted range would be runtime parameters
856    o GMredi:
857      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
858      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
859      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
860    o GCHEM:
861      - move call to GCHEM_FORCING_SEP, so that it is now called before
862        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
863      - introduced a useGCHEM runtime flag and applied it everywhere.
864      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
865        this flag is now only visible within GCHEM-pkg routines.
866      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
867        be replaced by a 3D array that is computed before thermodynamics; for
868        this, the tracer ID iTracer had to be included into the parameter list
869        of ptracers_forcing
870      - set up forward_step to call gchem_forcing, that will replace
871        gchem_forcing_int in ptracers_forcing
872      - cleaning up
873    o small cleaning of exch2: remove files that are also in eesupp/src
874    
875    checkpoint56
876    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
877    o mnc: cleanup "full" files--fixes out-of-memory problem
878    o ECCO-GODAE
879      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
880      * fully merged and updated from SIO code
881        windstress sign change affects
882        - exf_inscal_[u/v]stress
883        - sign of xx_tau[u/v] adjustments
884        - signs in cost_scat
885      * ctrl_get_gen: avoid update of tau[u/v] for first few days
886      * natl_box_adjoint updated and compressed
887      * 2-level checkpoint switch added
888        (tested in EXP. 1 of natl_box_adjoint)
889      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
890    o SVD
891      * first complete, non-hacked version for SVD calculations
892      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
893        performed via direct access files admtlm_vector.it????
894        (via ctrl_[un]pack)
895      * optimcycle is used for ARPACK iteration counter
896        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
897      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
898        and add linear transforms where necessary
899      * controls are initial/final SST, SSS (can be extended; need to check
900        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
901    o mdsio: filename info to both stderr, stdout
902    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
903      from sign change
904    
905    checkpoint55j_post
906    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
907      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
908    o add consistent build directories and .cvsignore files to verification
909    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
910    o make all subroutines 30 or less characters in length for certain older
911      compilers to work (a thorough search only turns up two routines in
912      pkg/ptracers)
913    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
914      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
915    
916    checkpoint55i_post
917    o change arrays for total vertical diffusivity (2.D if explicit,
918      3.D if implicit) ; each ptracer uses its own background value.
919    o added mnc/NetCDF output capability to ocn_compon_interf
920      - added bits to verification/cpl_aim+ocn so that it can run on
921        ITRDA and other clusters without the mpirun "-wd" option
922    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
923      configuration
924    o give MNC the ability to create additional files rather than
925      exceeding a specified file size limit "MNC_MAX_FILESIZE"
926      - the default is just less than 2GB which is a practical limit
927        on many systems
928    o Compute the non-local term using either KPP vertical diffusivity (=default)
929       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
930    
931    checkpoint55h_post
932    o add verification test "vermix"
933    o remove all the *_ioinc flags and replace with the single global
934      outputTypesInclusive flag
935    o allow to set a vertical profile of vertical diffusivity for T & S
936    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
937    o useMNC moved from data.mnc to data.pkg
938    
939    checkpoint55g_post
940    o Renaming carbon AD experiments to comply with testreport conventions
941    o Updating adjoint of Held-Suarez hs94.1x64x5
942    o Fixing directives for non-ECCO forward_step, after ECCO directives
943      have been fixed to avoid recomp. of do_oceanic_phys
944      Works well for global_ocean.90x40x15,
945      but recomp. issue remains for carbon
946    o Updating adjoint output for natl_box_adjoint after
947      pkg/ecco has been modified (see taga c55d_post)
948    
949    checkpoint55f_post
950    o rename to timeave_init_fixed
951    
952    checkpoint55e_post
953    o some delicate re-shuffle of store directives to avoid one
954      extra call of do_oceanic_physics
955      affects ecco_the_main_loop.F, do_oceanic_physics.F
956      checkpoint_lev1_directives.h
957    o NB: this may break global_ocean adjoint temporarily,
958      but it is clear how to fix it. Will do later, need this now.
959    
960    checkpoint55d_post
961    o ECCO specific cost function terms (up-to-date with 1x1 runs)
962    o ecco_cost_weights is modified to 1x1 runs
963    o modifs to allow observations to be read in as
964      single file or yearly files
965    o enable to read exf forcing fields as either
966      single file or yearly files (flag useExfYearlyFields)
967    checkpoint55d_pre
968    
969    o switch between 2-level and 3-level checkpointing
970    o add ability of MNC to write local and "partial" (eg. 2D slices where
971      the full 3D field is never actually stored) arrays to NetCDF files
972      with the correct (that is, the complete multi-dimensional) set of
973      array indicies
974      - used in mom_vecinv() to write the diagFreq output
975      - tested (demonstrated) in verification/aim.5l_cs
976    o further mnc-ification
977      - add verification/lab_sea to the list with mnc setups
978      - fix undefined mnc v-names in cd_code
979      - add kpp to mnc output (both snapshot and timeave)
980    o non-hydrostatic code
981      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
982        in calc_gw.F
983      - defaults to viscAh
984      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
985        friction or Leith) in non-hydrostatic mode, as long as there is
986        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
987    o pkg/cost
988      extend simple cost functions to treat time mean quantities
989      (T,U,V) via cost_accumulate_state from cost_tile
990    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
991        be 2 times larger than the minimum size the advection scheme requires.
992        now get a perfect conservation of salt in advect_cs test-exp (updated)
993    o GGL90 (Gaspar's TKE mixed layer)
994      - add horizontal diffusion of TKE, requires exchanges in
995        do_fields_blocking_exchanges, horizontal diffusivity is zero by
996        default. In OPA there is no horizontal diffusion of TKE but the
997        mixing coefficients are computed from a horizontal average of TKE of
998        6 points or so. I think that diffusion has a little more physical
999        justification.
1000      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1001        was in vain)
1002      - mask tke-variable in ggl90_init
1003    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1004    o fix biharmonic diffusion on CS-grid.
1005    o more obcs stuff
1006      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1007        for reading boundary values. This routine is called from
1008        obcs_prescribe_read
1009      - updated obcs_check
1010      - changed sponge layer relaxation parameter units for days to seconds
1011      - turned off sponge layer by default
1012      - changed argument list of OBCS_CALC to myTime+deltaTclock
1013      - fixed about 35 bugs in obcs_external_fields_load
1014    
1015    checkpoint55c_post
1016    o obcs stuff
1017      - new runtime flags useOBCSprescribe, useOBCSbalance
1018      - re-arranged obcs_calc
1019      - moved exf_getobcs to obcs_prescibe_read
1020        obcs_prescibe_read is called after ORLANSKI stuff
1021        and independent of it (executable can contain all).
1022      - updated obcs_check
1023      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1024        These may be necessary only if tangential velocities are
1025        prescribed at OB, not sure, needs testing.
1026    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1027      which simplifies the calls and passes the ifc check-bounds test
1028    
1029    checkpoint55b_post
1030    o add a 2D scalar, Z location, exchange_2 routine.
1031    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1032      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1033      affects advect_cs results (for the wrong reason): update output.txt
1034    o use a more standard discretization for biharmonic viscosity ;
1035     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1036      affects results of dome set-up: update output.txt
1037    o fix gad_advection.F (CubedSphere part), back to version 1.23
1038    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1039    
1040    checkpoint55a_post
1041    o merged code to
1042      * prescribe/read time-dependent open boundaries
1043        (works in conjunction with exf, cal)
1044      * sponge layer code for open boundaries
1045      * each boundary N/S/E/W now has its own CPP option
1046        (healthy for the adjoint)
1047    
1048    checkpoint55
1049    o up-to-date adjoint of previous breaks
1050      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1051      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1052      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1053      - carbon: * remove tr1-related adjoint verification
1054                * add ptracer as control variable
1055    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1056      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1057    
1058    checkpoint54f_post
1059    o in verification/carbin/ remove experiment related to
1060      ALLOW_PASSIVE_TRACER (array tr1 etc)
1061      code_ad/ input_ad/ results_ad
1062    
1063    o add two new packages
1064      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1065        + subject to optimization (memory)
1066      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1067        + subject to reordering (many GOTOs in the original code)
1068        + so far opps is called for every (i,j) point, and then operates in
1069          the vertical; one may want to reorder the scheme in order operate in
1070          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1071          fields)
1072    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1073      - all verification tests compile and run with linux_ia32_g77
1074      - defaults are compatible with current input files--nothing
1075        should change if you were not previously using MNC
1076      - MNC output has been added in numerous places (eg. timeave)
1077        but there are still a few writes not yet do-able with MNC
1078        (this is in progress)
1079      - flags now allow for either/or/both use of MDSIO and MNC and
1080        documentation will soon follow
1081      - numerous small formatting cleanups for ProTeX
1082    o add version info (via BUILD_INFO.h) to MNC and stdout
1083    
1084    checkpoint54e_post
1085    o add two new packages
1086      - pp81 (Packanowski and Philander, 1981), Richardson number and
1087        stratification dependent mixing
1088      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1089      - these scheme operate in a similar manner as KPP (without ghat, of
1090        course), however there is only one diffusivity that is used for both
1091        temperature and salinity (and passive tracers)ç
1092    o add offline package
1093    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1094      provided by Stephanie Dutkiewicz
1095    o genmake2: add ability to search for C compilers and cleanup test output
1096      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1097    
1098    checkpoint54d_post
1099    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1100    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1101      leading to additional shift by 5 days each year of integration
1102       (i.e. leading to considerable offset over the years)
1103    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1104    o start with no AB and no initial filtering (staggerTimeStep):
1105      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1106    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1107      (external loading & cpl import/export stay in forward_step.F)
1108    o update coupling interface to work with new staggerTimeStep
1109    o change MDSIO ptracers_pickup.
1110    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1111    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1112    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1113    
1114    checkpoint54c_post
1115    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1116      this affects (truncation error) output.txt of test-exp:
1117       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1118    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1119    o change Qnet to always be the net heat flux, (+upward).
1120      affects (truncation error) output of natl_box exp.: updated
1121    o define the max number of passive tracers in PTRACERS_SIZE.h
1122    o start to test mnc routinely in exp0
1123    o add sea-ice loading (sIceLoad) as a new forcing field.
1124    
1125    checkpoint54b_post
1126    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1127       impressive on Altix and Opteron systems)
1128    o diagnostics can now write NetCDF files through the mnc package
1129    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1130    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1131    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1132      affects (truncation error) output of lab_sea & natl_box exp.: updated
1133    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1134    
1135    checkpoint54a_post
1136    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1137    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1138    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
1139    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
1140      + internal_wave (shift in writing cg2d_ini_res)
1141    checkpoint54a_pre
1142    
1143    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
1144      - modified verification/lab_sea and natl_box_adjoint accordingly
1145    
1146    checkpoint54
1147    checkpoint53g_post
1148    o prepare splitting of thermodynamics: store convect.counter in common block
1149    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
1150      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
1151    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
1152    o new parameter "nShapS": allow to treat differently S from T (nShapT)
1153    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
1154    o restore adjointability
1155    
1156    checkpoint53f_post
1157    o modifications that affect AIM experiment results (update output.txt):
1158      - no advection of S at top interface Nr (pkg/generic_advdiff)
1159      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
1160    o AIM pkg:
1161      - include stability function into surf.Flux derivative relative to Tsurf
1162      - calculate clear-sky radiation & surface temp. change (for diagnostics)
1163    
1164    checkpoint53e_post
1165    o merged cylindrical coord configuration
1166    o added rotating_tank experiment
1167    checkpoint53e_pre
1168    
1169    checkpoint53d_post
1170    o faulks upgraded: re-generate output.txt that have changed:
1171       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
1172    o Added Bryan and Lewis, 1979, vertical diffusivity profile
1173    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
1174    o added Sadourny discretization of Coriolis
1175      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
1176      - re-enabled use of omega3 (useAbsVorticity)
1177    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
1178      vector-invariant equations
1179      - note: does *NOT* yet use same variable visc. for no-slip BC's.
1180    o recoded the lateral boundary conditions for non-hydrostatic w, this time
1181      hopefully without new bugs
1182      - still to do: biharmonic friction for non-hydrostatic w
1183    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
1184    o regenerated output for global_ocean_ebm (using -ieee)
1185    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
1186      of mom_common/
1187      - simple re-arrangement of instructions within computing loop
1188    checkpoint53d_pre
1189    
1190    checkpoint53c_post
1191    o new version of coupler for AIM+thSIce and Ocean models
1192     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
1193     - land: change Evaporation of snow
1194     - aim with thSIce: fix bug in snow-precip.
1195    o changes to calc_gw.F
1196     - bug fix for w^2 term near the bottom boundary
1197     - (hopefully) improve the lateral slip boundary condtions for use with
1198        partial/looped cells
1199      - because the bug fix changes two verification experiments anyway (exp5
1200        and plume on slope), change the lateral boundary condition from half slip
1201        to the value of no_slip_sides
1202    o ebm package wasnt quite up to the parallel task. Fixed that.
1203    o Adjoint of EBM package + verification
1204      * TLM OK
1205      * ADM not sufficient accuracy yet (needs further testing)
1206    
1207    checkpoint53b_post
1208    o Commiting new energy balance model to repository
1209      * package is pkg/ebm
1210      * verif. is verification/global_ocean_ebm
1211      * references are in ebm_driver.F
1212    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1213    C        Global thermohaline circulation. Part I:
1214    C        Sensitivity to atmospheric moisture transport.
1215    C        J. Climate 12(1), 71-82
1216    C      * X. Wang, P. Stone and J. Marotzke, 1999:
1217    C        Global thermohaline circulation. Part II:
1218    C        Sensitivity with interactive transport.
1219    C        J. Climate 12(1), 83-91
1220    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
1221    C        Destabilization of the thermohaline circulation
1222    C        by atmospheric eddy transports.
1223    C        J. Climate 7(12), 1870-1882
1224    o Will need long integration testing.
1225    checkpoint53b_pre
1226    
1227    o created pkg/mom_common in preparation for variable viscosity code
1228    o renamed and split ini_mnc_io
1229    o pkg/land: only liquid water can diffuse or run-off
1230    o AIM using land: soil wetness availability account for snow
1231    o added printMapIncludesZeros to EEPARMS namelist
1232    
1233    checkpoint53a_post
1234    o restore TAMC compatiility for exf_constants.h
1235      (no usage of _d in .h)
1236    o Additional storing in KPP in an attempt to fix
1237      TAMC problem with adjoint of KPP code.
1238      (no success...)
1239      Identical code works fine with TAF.
1240    o Fixed verification/natl_box_adjoint experiments.
1241      Initial conditions for Experiments 4 and 5 are now
1242      set to "SEAICE_initialHEFF=0", which is more reasonable,
1243      and hence gives results closer to that of Experiment 2.
1244      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
1245    
1246    checkpoint53
1247    o stable checkpoint with up to date adjoint
1248      TLM tests only run for 1st grdchk at the moment. Its unclear if
1249      this is a code problem or a problem with resetting code for g_
1250      variables that is being autogenerated wrong.
1251      Otherwise:
1252       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
1253       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
1254         are both still in chaos following their security messes.
1255    
1256    checkpoint52n_post
1257    o various build (mostly genmake2) changes including:
1258      - ability to build/run more easily within Cygwin and MacOS X
1259      - more complicated Makefiles with a stronger dependence on Gnu Make
1260    o pkg/seaice modifications
1261      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
1262        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
1263        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
1264      - changed proxy for geostrophic velocity and updated
1265        verification/lab_sea/results/* accordingly
1266      - removed ADI dynamic solver from pkg/seaice
1267      - replaced all occurrences of 1/CSTICE or 1/CSUICE
1268        they caused a segmentation fault under certain circumstances
1269      - removed unused field WATR
1270    o bug fix in exf-package:
1271      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
1272         now reflect that.
1273    o small fixes in the cal-package:
1274      - set reference date to first of January for the 'model'-calendar
1275      - failing of cal_CheckDate in cal_FullDate now actually results in a
1276        warning
1277    o small modifications in exf-package to increase flexibility:
1278      - change climtempfreeze from a constant to a runtime parameter that
1279        is specified in data.exf_clim (default = -1.9)
1280      - introduce runtime parameter windstressmax (default = 2.0) that is
1281        specified in data.exf
1282    o fix in pkg/thsice:
1283      - update Evap (Tsf changes) to be consistent with Latent heat flux
1284      - maintain snow precipitation unchanged (even if Tsf >=0).
1285     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
1286    
1287    checkpoint52m_post
1288    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
1289      this does not change any of the results, because myIter=0 in swfrac always
1290      lead to jwtype=2 (the default anyway), but the call makes little sense
1291      as a default
1292    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
1293    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
1294      atmospheric model (AIM) to use it ; add a "slab ocean" component.
1295    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
1296    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
1297    o extending useSingleCpuIO option to work with new exch2 I/O format
1298      - old-style, missing-tile I/O is still accessible by defining CPP
1299        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
1300    o monitor package can write to NetCDF files and/or STDOUT
1301    o fix re-definition bug in MNC_GRID_INIT_ALL()
1302    o doc/api_reference added
1303      - a framework for building an API Reference Manual using all
1304        the "protex" comments embedded in the code
1305      - see pkg/generic_advdiff, pkg/mnc for examples
1306    o MNC:
1307      - make myThid the last argument for all subroutines
1308      - new default for the grid files: NO halos
1309      - add useMNC and other run-time flags
1310      - separate per-file-group handling of the unlimited dimension
1311      - early initialization of MNC w/ flags read at the eeboot stage
1312        and lookup tables set in initialize_fixed
1313      - write all MNC output to a freshly-created directory
1314    o thermodynamics sea-ice (thsice) is now tested with testreport.
1315    o test exp. advect_cs: use the standard cs32 grid ; update output.
1316    o Added functionality to grdchk:
1317      pick global i,j,k position (or nearest wet) where to perform check.
1318    
1319    checkpoint52l_post
1320    o new land formulation:
1321      a) use ground enthalpy as prognostic variable to ensure exact
1322         energy conservation.
1323      b) account for water temperature and for latent heat of freezing
1324         in all processes (rain, run-off, ground storage)
1325      c) compute surface and ground temperature implicitly.
1326    o aim_v23 modification for new land model:
1327      a) Treat separately land / ocean / sea-ice surface fluxes
1328         to allow implicit computation of land & sea-ice surface temp.
1329      b) add snow precipitation.
1330    checkpoint52l_pre
1331    
1332    o fix problem (when 1 tile is empty) in min/max monitor.
1333    o fix bug in timeAve (u,vZetatave in common block)
1334    o no restoring terms under ice for pkg/seaice
1335    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
1336    o bug fix for pkg/seaice pickups
1337    o change MNC call locations and add coordinate attributes
1338    o mask vorticity at the corner ; affects global_ocean.cs output
1339    o fix ini_curvilinear_grid ; test CS experiments with mpi
1340    o aim.5l_cs: modify sea-ice fraction input file ; update output
1341    o exf: Adding simple range check routine for exf fields after read
1342    
1343    checkpoint52k_post
1344    o removed top-level directory "diags"
1345      - we migrated these functions to pkg/timeave a long time ago
1346    o fixed bug introduced in pkg/monitor
1347    o accuracy ctrlprec = 32 insuffient for gradient checks using
1348      averaged fields (I/O via cost_averages)
1349      -> use ctrl.h in active_file*.F to control I/O precision.
1350    o paramter list of CALL ADTHE_MAIN_LOOP
1351    o added initial do_the_model_io to ecco
1352    o set all ...Freq to zero after cost_final
1353      taveFreq, dumpFreq, pChkptFreq
1354    o MAIN and ECCO differentiability restored
1355    
1356    checkpoint52j_post
1357    o fix nchklev in tamc.h for global_ocean...
1358    o Bringing flow and store directives up-to-date
1359    o Really weird thing!
1360      call do_the_model_io from the_main_loop with parameters
1361      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
1362      TAF places a faulty re-call of initialise_varia
1363      after cost_final call which should not be there!
1364    checkpoint52j_pre
1365    
1366    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
1367      error messages
1368    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
1369    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
1370      debug output
1371    o modfied mdsio_writefield.F to handle non-global files under exch2
1372    o update AIM Cubed-Sphere exp (aim.5l_cs):
1373      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
1374    o update AIM Equatorial Channel exp:
1375      use standard aim_v23 pkg and change the SST fields to be more realistic.
1376    o globalFile now works with exch2
1377    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
1378      mon_vort3.F to make exch2 friendly with >1 tile per cube face
1379    o limit timeave output for hi-res integrations
1380    
1381    checkpoint52i_post
1382    o removed CPP_EEOPTIONS.h from verification/*/code
1383    o updated the tiling for global_ocean_pressure
1384    checkpoint52i_pre
1385    
1386    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
1387      the old pkg/aim).
1388    
1389    checkpoint52h_pre
1390    o shortened offending lines in exch2_send_rx?.template
1391    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
1392    o genmake2: add build & execute test for NetCDF code
1393    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
1394      old grid files, moved CPP_EEMACROS.h to pkg/exch2
1395    o added useSingleCPUIO flag to monitor.F and mon_out.F
1396    o added temporary hack for sea-ice dynamics on the cube:
1397      metric terms are ignored and it is assumed that
1398      there is no sea-ice on cube faces 1, 2, 4, and 5.
1399    
1400    checkpoint52f_post
1401    o added exch2 cube routines to pkg/exch2
1402    o modified hs94.cs-32x32x5 to use it
1403    o added new grid files to hs94.cs-32x32x5
1404    checkpoint52f_pre
1405    
1406    checkpoint52e_post
1407    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
1408      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
1409    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
1410      to work with implicit vertical advection and AB ;
1411    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
1412    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
1413     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
1414    checkpoint52e_pre
1415    
1416    o fix bug in impldiff when Nr=1 or Nr=2.
1417    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
1418    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
1419    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
1420      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
1421    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
1422    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
1423    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
1424    
1425    checkpoint52d_post
1426    o re-tiled many expts to allow comparison in multi-processor mode
1427      - updated output accordingly
1428      - changed hs94.128x64x5 to use intial T from file rather than use the
1429        random number generator
1430    o add infrastructure in model routines for fizhi and gridalt packages
1431    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
1432    o changes to permit hi-res, cubed-sphere, configuration
1433      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
1434      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
1435      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
1436        of surface winds for the cube
1437      (A verification experiment, based on global_ocean.cs32x15, but with
1438       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
1439       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
1440       complete with example surface forcing files and matlab scripts to look
1441       at the output and compare it with that of global_ocean.cs32x15.)
1442    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
1443       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
1444       to conform to the common rule.
1445    o check-in the first version of the coupler + interfaces for multi-components
1446       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
1447       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
1448       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
1449       - ocean and atmos. share the same horizontal grid (no interpolation).
1450       - exchanges between component and coupler is done in forward_step
1451    o new verification experiment, cpl_aim+ocn:
1452       coupled ocean - AIM atmosphere on cs32 grid.
1453    
1454    checkpoint52d_pre
1455    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
1456    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
1457    
1458    checkpoint52c_post
1459    o Fixing OPTIONS files for use of exf:
1460      - ALLOW_ECCO not needed
1461      - ECCO_CPPOPTIONS.h should not be included from
1462        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
1463        as has been the case in the past
1464      - All cal/exf related options are currently set in
1465        single header file. Should remain so until we
1466        agree on a consistent new policy.
1467    o Removed all CPP options for cal package.
1468      cal has no more CPP options.
1469    o modified STOREs in GAD_ADVECTION
1470    o corrected key comp. for passkey
1471    
1472    checkpoint52b_post
1473    o new version: "thsice" of thermodynamic sea-ice pkg:
1474     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
1475     - modify fluxes but do not change theta directly;
1476     - light cleaning of bulk_force pkg (still needed with thsice).
1477     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
1478       + output_thsice.txt to test thsice & bulk_force pkgs.
1479    o put back grid & coriolis monitor output.
1480    checkpoint52b_pre
1481    
1482    o call "do_the_model_io" at the beginning (=> dump initial state)
1483    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
1484    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
1485      (need info on NUMBER_OF_PTRACERS)
1486    o missing PTRACERS headers in some routines
1487    o default tamc.h in pkg/autodiff supposed to crash
1488      to ensure proper customization
1489    
1490    checkpoint52a_post
1491    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
1492      - moved surfaceTendencyTice from pkg/seaice to main code
1493      - subroutine FREEZE_SURFACE now limits only surface temperature
1494        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
1495        => new output.txt for global_ocean.cs32x15 & global_with_exf
1496      - keep the old version of FREEZE for backward compatibility;
1497        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
1498      - corresponding modifs for TAF directives
1499    o added surface flux output variables to TIMEAVE_STATVARS
1500    o time-averaged output for pkg/ptracers
1501    o fix problem with ECCO-related divided adjoint
1502      snapshot file was missing some ad-variables,
1503      but no warning issued by TAF
1504    
1505    checkpoint52a_pre
1506    o some bug fixes for #undef REAL4_IS_SLOW
1507    
1508    checkpoint52 = ecco_c52_e35
1509    o after testing adjoints of checkpoint51u_post
1510    
1511    checkpoint51u_post
1512    o this is the post-merge tag of the ecco-branch
1513      (needs another clean checkout and re-testing)
1514    o various natl_box_adjoint configs and results
1515      but no input fields
1516    o obcs adjoint not yet merged!
1517    o adding ECCO global 1x1 and 2x2 degree configs
1518    o updated/extended some store directives for seaice
1519    o pkg/ecco now containes ecco-specific part of cost function
1520    o top level routines the_main_loop, forward_step
1521      supersede those in model/src/
1522      previous input data.cost now in data.ecco
1523      (new namelist ecco_cost_nml)
1524    o in ctrl/ cleaned some cross-dependencies and updated CPP options
1525    
1526    checkpoint51t_post
1527    o this is the pre-merge tag of the ecco-branch
1528    
1529    checkpoint51s_post
1530    o cleanup: removed various obsolete #define-s
1531    o pkg/grdchk
1532      - renamed 'ph-grd 3' to 'grad-res'
1533      - merged from ecco-branch
1534        (remaining bug fixes for obcs gradient checks)
1535      - additional high-precision output for testreport
1536        (grep for 'precision_grdchk_result')
1537    
1538    checkpoint51r_post
1539    o cleaned up or removed CPP_OPTIONS.h files
1540    o updated results for some of the tests to reflect the new
1541      optfiles (-ieee: -O0 instead of -O3)
1542    
1543    checkpoint51q_post
1544    o cd_code:
1545      - moved cd_scheme.F -> cd_code_scheme.F
1546      - separate read_checkpoint from cd_code_ini_vars.F
1547      - separated cd_code part from write_checkpoint
1548      - updated AD_SOURCE, generated .flow
1549      - added CD_CODE_VARS.h to the_main_loop
1550      - Moving cd_code specific store dir.s to pkg/cd_code
1551    o ctrl package totally restructured
1552      - pack/unpack now optional and decoupled from
1553        xx_/adxx_ I/O
1554      - ctrl_pack/unpack cleaned
1555        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
1556      - confined inclusion of AD_CONFIG.h to where necessary.
1557    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
1558    
1559    checkpoint51p_post
1560    o create initial cd_code package
1561      - WARNING: the initialization of fields within packages
1562        is broken because INI_FIELDS (where READ_CHECKPOINT is
1563        called) is called *before* PACKAGES_INIT_VARIABLES.
1564        This seems to be backwards since
1565        1) its important to initially zero the entire field including
1566           the "halo" region
1567        2) zeroing needs to be done *before* reading pickup info
1568           and the pickup call might or might not happen in any
1569           particular run
1570      - this needs an overhaul for R2
1571    o cleanup verification/*/code/GMREDI_OPTIONS.h
1572    o cleanup testreport
1573    
1574    checkpoint51o_post
1575    o bringing AD-related verif's up to date with genmake2
1576      - carbon/
1577      - global_ocean.90x40x15/
1578      - hs.94.1x64x5/
1579      - (front_relax/ )
1580    o (more) consistent directory structure for AD-related verif.'s
1581    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
1582    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
1583    o bug fix in find_alpha.F for MDJWF:
1584      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
1585        change rho -> rho-rhoConst
1586      - replace call find_rho to find_rhonum
1587    o initialisation of rFlx extended to full array (required by TAF)
1588      and shifted to thermodynamics
1589    o removed PTRACERS.h in ptracers routine
1590    o added surfacetendencyPtr to S/R parameter list pracers_forcing
1591    o Correcting initialisations for fVerU, fVerV.
1592    o helping TAF to recognize dependency on kUp for
1593      fVerU, fVerV
1594    o Replacing delZ by delR in pkg/ctrl/
1595    checkpoint51o_pre
1596    
1597    o undid all of cp51 pending some cleanups and discussion
1598    o added the [#include "AD_CONFIG.h"] statement to all files that need
1599       it for adjoint/tl #defines
1600     o re-worked the build logic in genmake2 to support AD_CONFIG.h
1601     o removed tools/genmake since it no longer works
1602    
1603    checkpoint51n_post
1604    o modifications to make FREEZE flux visible to pkg/kpp
1605      - moved surfaceTendencyTice from pkg/seaice to main code
1606      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
1607      - subroutine FREEZE now limits only surface temperature
1608        (this means new output.txt for global_ocean.90x40x15,
1609         global_ocean.cs32x15, and global_with_exf)
1610    o added surface flux output variables to TIMEAVE_STATVARS
1611    
1612    checkpoint51n_pre
1613    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
1614    o added [#include "AD_CONFIG.h"] to all files that use the following
1615      defines:
1616      - ALLOW_ADJOINT_RUN
1617      - ALLOW_TANGENTLINEAR_RUN
1618      - ALLOW_ECCO_OPTIMIZATION
1619    
1620    checkpoint51m_post
1621    o incorporating changes to get TAMC/TAF working in genmake2
1622      - added new TAMC/TAF targets to the Makefile
1623      - various cleanups related to package handling
1624      - these changes should have no impact on the forward model
1625    
1626    checkpoint51l_post
1627    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
1628     - faster algorithm for cal_addtime.F
1629     - higher precision arithmetic, where needed
1630     - pkg/exf *startdate variables changed from calendar date to
1631       model integration time
1632    
1633    checkpoint51l_pre
1634    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
1635    o enable to apply restoring on S & T only in a latitude band.
1636    o update output (external_forcing_surf modif. change truncation errors)
1637       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
1638    
1639    checkpoint51k_post
1640    o change default to: useNHMTerms=.FALSE.
1641     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
1642       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
1643     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
1644        exp1, ideal_2D_oce
1645     - change data file of oceanic exp (leave the results unchanged for now)
1646       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
1647    o set gravitySign automatically according to the vertical coordinate used
1648      (and change sign: back to "logical" value: +1 when R increases downward)
1649    o added an include barrier to the default CPP_OPTIONS.h and
1650      removed the #include "PACKAGES_CONFIG.h" from it
1651    o fix a bug in mom_fluxform (from chk51j_post)
1652    
1653    checkpoint51j_post
1654    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
1655    o adjusted some flow directives (dynamics, thermodynamics)
1656    o added cubed-sphere case to test cost function
1657    o heckpoint_lev?_directives.h now include
1658      pkg-specific directives, whenever those are enabled.
1659    o Moving pkg-specific flow directives to corresponding pkg
1660      Moving pkg-specific differentiation list to corresponding pkg
1661      Moving pkg-specific checkpoint-lev storing to corresponding pkg
1662      ---> conventions are
1663           - pkg_ad.flow
1664           - pkg_ad_diff.list
1665           - pkg_ad_check_lev?_dir.h
1666    
1667    checkpoint51i_post
1668    o merge of the branch-genmake2
1669      - knowingly breaks the older genmake
1670      - automatic generation of all ALLOW_${PKG_NAME} defines
1671      - new testreport supersedes older testscript
1672    o large number of package inclusion and header cleanups
1673    checkpoint51i_pre
1674    
1675    o new output for adjoin of global ocean vector invariant
1676    o fix for checkpoint of thermodynamic seaice and bulk_force
1677    o Steph gchem various cleanups
1678    
1679    checkpoint 51h_pre
1680    o fixed some single quotes
1681    o modify gchem pkg to be more versatile
1682    o modifications to clean up dic pkg
1683    o add pkg/cfc
1684    
1685    checkpoint51g_post
1686    o provide links for ARPACK and ADM*TLM
1687    o start removing verification/vero/
1688    o update AD-related stuff
1689      (in particular some IF-statements in model/src/ routines)
1690    o adding to verification/global_ocean.90x40x15/ adjoint of
1691      vector invariant setup
1692    
1693    checkpoint51f_post
1694    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
1695    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
1696      of tracer Green's fucntions for ocean inversion project.
1697    
1698    checkpoint51f_pre
1699    o Added on-the-fly spatial interpolation capability
1700        "USE_EXF_INTERPOLATION" to pkg/exf.
1701      - This is a temporary Cartesian-grid hack until
1702        the super-duper ESMF coupler becomes available.
1703      - See verification/global_with_exf/README for usage example.
1704      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
1705        flags and modified pkg/seaice accordingly.
1706    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
1707        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
1708        non-local transport term.
1709    
1710    checkpoint51e_post
1711    o pkg/mom_vecinv:
1712      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
1713      - add time-ave diagnostic of vorticity advection.
1714    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
1715    o atmospheric geopotential: - include water vapor effect;
1716                                - use p^kappa in p* scaling.
1717    o land pkg: read initial state from files.
1718    o AIM : add stratospheric drag in the upper level
1719    
1720    checkpoint51d_post
1721    o change function ILNBLNK (=> last non-blank char.) to return zero
1722      (instead of the string length) when the string. char is empty
1723    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
1724    o modif's to restore TAMC compatibility
1725      - avoid "_d" constructs in PARAMETER declarations
1726      - avoid interrupting lines by comment lines
1727    o Use cluster local disks for purely local I/O
1728      vs. globally visible disks needed for ctrl stuff
1729      (merged from ecco-branch)
1730      - new active_file_loc... and mdsio_..._loc routines
1731      - affected packages: autodiff, ctrl, grdchk, mdsio
1732    
1733    checkpoint51c_post
1734    o introducing integer flag debugLevel
1735      - debLevZero: suppress all output
1736      - debLevA: standard
1737      - debLevB: equivalent to current debugMode=.TRUE.
1738    o introducing pathname variable mdsioLocalDir for mdsio
1739      that can be specified at runtime
1740      (relevant for cluster I/O to local disk)
1741    `
1742    >>>checkpoint51b_post
1743    adjoint of ptracers
1744    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
1745    o extended state in checkpoint_lev?, etc.
1746    o alternative ctrl/cost with tr1 or ptracer
1747    o new comlev1_bibj_ptracers
1748    o new ptracers.flow
1749    o made ptracers_forcing same as external_forcing_s
1750    o added verification for adjoint with ptracers
1751      - adm. grdchk fail so far
1752      - tlm. grdchk OK
1753      - checked tapelev/comlev recomputations: OK
1754    <<<checkpoint51b_pre
1755    
1756    checkpoint51a_post
1757    o added code for biogeochemistry package
1758      - new pkgs: dic, gchem
1759      - new subroutine in ptracers
1760    o modify code for biogeo packages
1761      - in model/src and pkg/ptracers
1762    
1763    checkpoint51
1764    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
1765      - autodiff, ctrl, exf, grdchk, seaice
1766      kept separate packages
1767      - cost, ecco, obcs
1768    o updating verification/internal_wave, verification/lab_sea
1769      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
1770    
1771    checkpoint50i_post
1772    o Preparing next differentiable checkpoint and sync
1773      of MAIN vs. ecco-branch
1774      - 1st step: this one is differentiable
1775      - 2nd step: next(! not this) checkpoint will have updated packages
1776                  from ecco-branch)
1777    
1778    checkpoint50h_post
1779    o new package "land": provide surface BC for AIM.
1780    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
1781    o AIM: use true log-P extrapolation for near surface temp (= as in
1782        F.Molteni paper) ; update aim.5l_cs output.
1783    o New variable in PARM03 for more flexible pickups
1784    o somewhat cleaned package initialisation sequence for
1785      ctrl/ cost/ ecco/ in packages_... routines
1786    
1787    checkpoint50g_post
1788    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
1789      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
1790      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
1791        made the default because of faster convergence than ADI
1792    
1793    checkpoint50f_post
1794    o exf totally restructured
1795      - replaced all exf_set_ routines by one generic exf_set_gen.F
1796        and made sure it's still differentiable
1797      - split exf_getffields.F into new exf_bulkformulae.F
1798      - exf_inscal_/exf_outscal_ suffixes consistent with field names
1799      - updated adjoint/makefile and relevant verif. accordingly
1800    
1801    checkpoint50f_pre
1802     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
1803          + change Evap over land. (update aim.5l_cs output)
1804     o added missing .cvsignores and made uniform across expts
1805     o changed configuration of tidal_basin_2d expt
1806     o added pkg/debug functions for tracing code in fatal crashes
1807     o tidied pkg/monitor to use MONITOR_OPTIONS.h
1808     o new fn in pkg/monitor to stop model if solution grows too big
1809     o removed lots of single quotes from comments
1810    
1811    checkpoint50e_post
1812    o make KPP work with PTRACERS
1813     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
1814       nearly a copy of kpp_transport_s
1815     - there is no analogue to SurfaceTendencyS, so I have to use
1816       gPtr(of the surface layer) instead
1817    o add a new platform SunFire+mpi (SunFire 15000) to genmake
1818    checkpoint50e_pre
1819    
1820    checkpoint50d_post
1821    o change kpp output from multiple-record state files to single-record state
1822      files analogous to write_state.F
1823    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
1824      analogous to the cg2d-related output.
1825    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
1826      so that writing to internal file fn (with length 512) fails.
1827    checkpoint50d_pre
1828    
1829    checkpoint50c_post
1830    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
1831    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
1832    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
1833    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
1834    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
1835    
1836    checkpoint50c_pre
1837    Merging from release1_p13:
1838    o bug fix for pkg/seaice dynamic solver
1839    o Added SEAICE_initialHEFF to pkg/seaice
1840    
1841    checkpoint50b_post
1842    o store u*,v* in gU,V instead of in guNm1,gvNm1
1843    o in order to put the momForcing out of the Adams-Bashforth:
1844      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
1845      to timestep.F
1846    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
1847    o re-generate output for highly sensitive test-exp:
1848       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
1849    
1850    checkpoint50b_pre
1851    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
1852    o corrected CPP option mismatch in exf_Bulk... functions for case
1853      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
1854    
1855    checkpoint50a_post
1856    o Bug fix for merging between c50 and KPP.
1857      ikey was passed from thermodynamics to kpp_calc via
1858      common block rather than being recomputed in kpp_calc,
1859      in contradiction with new key itdkey.
1860      New key ikppkey created, and tamc.h headers updated.
1861    
1862    checkpoint50
1863    - 2nd step of merge with ecco-branch:
1864      merge changes in ecco-branch back into main trunk
1865    - bug fix in find_alpha
1866    - more storing in gmredi_calc_tensor.F, kpp_routines.F
1867    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
1868    - merged some sliced AD support routines
1869    
1870    checkpoint49
1871    merged from ecco-branch:
1872    o exf:
1873      - Enable initialisation of forcing fields to constant
1874        (runtime) values.
1875      - in exf_getffields.F
1876        Reduce i-/j-loop to interior domain, discarding overlaps.
1877        That also fixes wrong TAF-key computations for key_1, key_2
1878        with bulf formulae.
1879      - exf_init.F modify #ifdef for exf_init_evap
1880      - exf_getffieldrec.F, ctrl_getrec.F
1881        The following INT-usages are not safe:
1882          fldsecs  = int(fldsecs/fldperiod)*fldperiod
1883          fldcount = int(fldsecs/fldperiod) + 1
1884        and were modified.
1885    o autodiff: checkpoint_lev...
1886      - updated storing for bulk formulae (some arrays were missing)
1887      - added state for seaice package
1888      - synchronized with main branch
1889    o DIVA:
1890      Modif.s in
1891      - the_main_loop.F
1892      - the_model_main.F
1893      and added cost_final_restore.F cost_final_store.F
1894      o With these changes, it is possible to fully separate
1895        the first forward run to compute the cost function (mdthe_main_loop)
1896        and adjoint runs over individual DIVA intervals (adthe_main_loop)
1897        into separate model executions.
1898        This enables better tuning of DIVA to given queue sizes.
1899      o Loss of cost function value in consecutive DIVA runs is
1900        fixed by storing to 'costfinal' file.
1901      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
1902        beginning/end of adjoint integration is accounted for.
1903      The current changes apply to TAF-1.4.26.
1904      TAF has one remaining bug, requiring one manual change
1905      (see MITgcm manual).
1906    o cal: synchronized between MAIN and ecco-branch
1907    
1908    checkpoint48i_post
1909    o Changes to restore differentiability of code w.r.t. previous tag
1910      (mostly adding new routines to make list and replacing
1911      pressure by totPhiHyd).
1912    o Updated and merged grdchk package
1913      - has both ADM and TLM checks
1914      - works for single- and multi-proc.
1915      - output cleaned
1916      - worked successfully for parallel DIVA
1917    o genmake:
1918      - Adding -platform=SP4
1919      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
1920    o Modif. for DIVA:
1921      ctrl_unpack should not be called in intermediate DIVA interval.
1922      (similar thing would apply for active files such as
1923      tbar, sbar, psbar, which should not be reinitialised;
1924      only relevant for ecco-branch)
1925    
1926    checkpoint48h_post
1927    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
1928    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
1929    o Added SEAICE_initialHEFF to pkg/seaice
1930    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
1931    
1932    checkpoint48g_post
1933    --- EOS:
1934    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
1935      store total Potential in totPhyHyd for diagnostics & EOS.
1936    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
1937    --- Pressure/geopotential gradient:
1938    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
1939    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
1940      ( changes results of global_ocean_pressure )
1941    o NLFS + z-coord.: add eta*Rho' contribution.
1942    o accurate phiHyd when using interface-W at the middle between 2 centers
1943     ( changes results of ideal_2D_oce )
1944    o includes r* 2nd term in potential gradient.
1945    
1946    checkpoint48f_post
1947    Merging from release1_p12:
1948    o Modifications for using pkg/exf with pkg/seaice
1949      - improved description of the various forcing configurations
1950      - added basic radiation bulk formulae to pkg/exf
1951      - units/sign fix for evap computation in exf_getffields.F
1952      - updated verification/global_with_exf/results/output.txt
1953    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
1954      (SBO) core products, including oceanic mass, center-of-mass,
1955      angular, and bottom pressure (see pkg/sbo/README.sbo).
1956    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
1957      to avoid negative values in shallow regions.
1958      - updated verification/natl_box/results/output.txt
1959      - updated verification/lab_sea/results/output.txt
1960    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
1961    o Added useSingleCpuIO option (see PARAMS.h).
1962    o Updated useSingleCpuIO option in mdsio_writefield.F to
1963      work with multi-field files, e.g., for single-file pickup.
1964    o pkg/seaice:
1965      - bug fix in growth.F: QNET for no shortwave case
1966      - added HeffFile for specifying initial sea-ice thickness
1967      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
1968    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
1969      kpp_transport_t.F, forward_step.F, and the_main_loop.F
1970    o pkg/seaice:
1971      - adjoint-friendly modifications
1972      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
1973    
1974    checkpoint48e_post
1975    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
1976    o dynamics: change definition of computational domain & adapt mom_fluxform
1977      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
1978    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
1979        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
1980        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
1981        global_ocean.90x40x15 global_with_exf global_ocean_pressure
1982        inverted_barometer solid-body.cs-32x32x1
1983      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
1984    
1985    checkpoint48d_post
1986    o in preparation for r*:
1987     a) use pre-computed gradient of hydrostatic potential:
1988        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
1989     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
1990        => affects results of glob_oce_pressure (different truncation error)  
1991      update output.txt of ideal_2D_oce & global_ocean_pressure
1992    
1993    checkpoint48d_pre
1994    o in preparation for r*:
1995      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
1996      pass the 2 comp. of the grad. as arguments to momentum S/R.
1997      but for the moment, only used if it does not change the results.
1998    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
1999    
2000    checkpoint48c_post
2001    Modifications in treatment of initial flux forcing controls
2002    to avoid extra storing of flux fields.
2003    
2004    checkpoint48c_pre
2005    o Added tidal_basin_2d experiment (currently 1D!)
2006    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
2007    
2008    checkpoint48b_post
2009    o r* coordinate added in #ifdef NONLIN_FRSURF block.
2010     (modification to pressure gradient not yet implemented)
2011    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
2012      (for U & V) that are used for vertical advection of momentum.
2013    
2014    checkpoint48a_post
2015    o In preparation for r*, use temp. array to compute vertical transport
2016       in flux-form momentum pkg. => change results of few test-exp.
2017      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
2018                        lab_sea, natl_box & plume_on_slope
2019    
2020    checkpoint48
2021    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
2022    
2023    checkpoint47j_post
2024    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
2025    o moved adexch from forward_step to addummy_in_stepping
2026    o added exch in ctrl_map_...
2027    o aveFreq.=0. at end of cost_final to avoid overwrite in
2028      reverse checkpointing loop
2029    o Yet more changes in gmredi:
2030      * adgmredi_calc_tensor
2031        avoiding all recomputation of gmredi_slope_limit
2032      * adgmredi_x/y/rtransport
2033        added flag for excessive storing to avoid recomp. of
2034        u/v/rtans, dTdx/y/z
2035        -> this is not really necessary and very memory-consuming
2036      * adgmredi_slope_psi:
2037        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
2038      * gmredi_slope_limit
2039        re-activated full calculation of taperfct for case 'ac02'
2040    o updating verification/ adjoints of carbon, global_ocean.90x40x15
2041    
2042    checkpoint47i_post
2043    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
2044    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
2045      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
2046    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
2047    o gmredi: fix few bugs.
2048    
2049    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
2050    This will be a good checkpoint to plug into the ecco-branch.
2051    o few modif.'s to get latest version adjointed
2052      (mainly kick out code in ini_linear_phisurf)
2053    o modif's to run adjoint with exactConserv
2054    o case GM_BOLUS_ADVEC should be cleaned
2055      S/R gmredi_slope_psi should be cleaned
2056    o verification/carbon now has exactConserv=.TRUE.
2057    
2058    checkpoint47g_post
2059    o time-average AIM output: becomes independent from statvars time-average
2060      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
2061    o After TAF bug fix:
2062      Tested adjoint of gmredi package.
2063      Tests were done with checkpoint47 rather than with latest
2064      checkpoint47f_post since the latter is broken for the adjoint
2065      verification/carbon/ contains both ADM and TLM gradient checks.
2066    Here they are, before they get changed/lost/stolen.
2067    Mostly modif.'s to fix numerical sensitivities.
2068    Gradient checks OK for
2069    - GM_taper_scheme:
2070      * clipping
2071      * ac02
2072      * linear
2073      * glw91
2074      * dm95
2075      * ldd97
2076    - GMREDI_OPTIONS:
2077      * GM_VISBECK_VARIABLE_K
2078      * GM_NON_UNITY_DIAGONAL
2079      * GM_EXTRA_DIAGONAL
2080      * GM_BOLUS_ADVEC
2081    in conjunction with data.gmredi parameters to be checked in
2082    in a few minutes under verification/carbon/code/
2083    
2084    checkpoint47f_post
2085    Merging from release1_p10:
2086    o modifications for using pkg/exf with pkg/seaice
2087      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
2088        and SEAICE_EXTERNAL_FLUXES
2089      - pkg/exf CPP options EXF_READ_EVAP and
2090        EXF_NO_BULK_COMPUTATIONS
2091      - usage examples are Experiments 8 and 9 in
2092        verification/lab_sea/README
2093      - verification/lab_sea default experiment now uses
2094        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
2095    
2096    checkpoint47e_post
2097    o created a tag prior to creating a branch
2098    
2099    checkpoint47d_post
2100    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
2101      at the bottom boundary had an erroneous half slip boundary condition
2102    o added bottom drag and no slip boundary condition capabilities to
2103      oceanic pressure coordinates code
2104    o added new verification experiment global_ocean_pressure, this experiment is
2105      also described in the tutorial section of the manual
2106    checkpoint47d_pre
2107    
2108    checkpoint47c_post
2109    o Added a verification experiment for a global cubed-sphere ocean run
2110      -  verification/global_ocean.cubed32x32x30
2111      -  uses pkg/therm_seaice and pkg/bulk_forcing
2112    
2113    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
2114    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
2115      when using P-coordinate; only implemented for atmospheric config.
2116    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
2117      NOTES: requires option NONLIN_FRSURF to be "#define".
2118    o update advect_xz/results/output.txt (left from checkpoint44g_post)
2119    
2120    checkpoint47b_post
2121    Merging from release1_p9:
2122    o pkg/seaice
2123      - removed GOTO's and added taf directives
2124      - double precision constants to reduce the g77 (Linux)
2125        to F77 (SGI) differences reported in release1_p8
2126    o tools/genmake
2127      - added SGI options
2128    o verification/testscript
2129      - updated to that of checkpoint47a_post
2130    o verification/global_ocean.90x40x15/input/eedata
2131      - modified for SGI f77 compatibility
2132    o verification/lab_sea
2133      - added description of sea-ice model
2134      - added missing matlab routines
2135      - added test of thermodynamics parallelization
2136    
2137    checkpoint47a_post
2138    o new pkg: aim_v23
2139     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
2140       for now, keep the same surface forcing as before.
2141     - Part-Cell implemented into AIM; check that Heat & Water are conserved
2142     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
2143     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
2144    o add diagnostic of surface correction term in monitor output
2145    
2146    o bulk_force and therm_seaice
2147    - Two packages:  bulk_force (Bulk forcing)
2148      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
2149    - Earlier integration from Stephaine Dutkiewicz
2150      and Patrick Heimbach.
2151    - Two ifdef statements for compile time,
2152       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
2153    
2154    checkpoint47
2155    differentiable version of checkpoint46n_post
2156    o bug fix in quasihydrostaticterms
2157    o * "clean" adjoint code (in terms of extensive recomputations)
2158        can now be obtained for all GMREDI options (i.e. for
2159        - GM_VISBECK_VARIABLE_K
2160        - GM_NON_UNITY_DIAGONAL
2161        - GM_EXTRA_DIAGONAL
2162        - GM_BOLUS_ADVEC )
2163      * However, wrong gradient check problem remains unsolved.
2164      * New CPP options have been introduced for different
2165        tapering schemes
2166    o external_fields_load now part of differentiation list
2167    o pressure needs multiple storing;
2168      would be nice to have store_pressure at beginning or
2169      end of forward_step, e.g. by having phiHyd global (5-dim.)
2170      (NB: pressure is needed for certain cases in find_rho,
2171      which is also invoked through convective_adjustment).
2172    o recomputations in find_rho for cases
2173     'JMD95'/'UNESCO' or 'MDJWF' are OK.
2174    o #define ATMOSPHERIC_LOADING should be differentiable
2175    o ini_forcing shifted to begining of initialise_varia
2176    o Incorporating QNVS line search routines into MITgcm
2177      (this is separate code, and therefore not under pkg)
2178      lsopt/, optim/
2179    o Updated verification/carbon/
2180      - #define GM_VISBECK_VARIABLE_K
2181      - GM_taper_scheme    = 'ldd97'    
2182    
2183    checkpoint46n_post
2184    Merging from release1_p8:
2185    o verification/natl_box:
2186      updating new external_fields_load routine
2187    o New package: pkg/seaice
2188      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
2189      The sea-ice code is based on Hibler (1979-1980).
2190      Two sea-ice dynamic solvers, ADI and LSR, are included.
2191      In addition to computing prognostic sea-ice variables and diagnosing
2192      the forcing/external data fields that drive the ocean model,
2193      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
2194      The implied surface heat flux is then stored in variable
2195      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
2196      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
2197      non-local transport term.  Because this call precedes model
2198      thermodynamics, temperature under sea-ice may not be "exactly" at
2199      the freezing point by the time theta is dumped or time-averaged.
2200      N.B.: fairly large differences in accuracy occur across
2201            different platforms/compilers; comparison between
2202            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
2203            generated output gives:
2204       T           S           U           V
2205      C D M    c        m  s        m  s        m  s        m  s
2206      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
2207      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
2208      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
2209    
2210      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
2211    o GAD:
2212      - generated new common blocks to account for call of
2213        same gad routines with differing traceridentities
2214        (needed to modify tracerIdentity indices in GAD.h)
2215      - generated separate common blocks for case useCubedSphereExchange
2216        (Department of Futurology)
2217      - parameter lists to gmredi_?transport: added tracerIdentity
2218      - added new key indices to tamc.h
2219    o external_fields_load:
2220      - added this routine to TAF list
2221      - needed to make some common blocks global and additional storing
2222        along the same lines as exf package (checkpoint_lev?_directives.h)
2223    o exf:
2224      updated external forcing package
2225      - bug fixes carried over from ecco-branch
2226        (missing OBCS_OPTIONS.h in two routines)
2227      - enable easy to use "no forcing".
2228      - added exf I/O for atmospheric loading
2229      - added exf I/O for runoff data
2230      - transfered scaling between exf <-> MITgcm to exf namelist
2231    o Adding new verification experiment global_with_exf.
2232      This verification experiment is almost identical to the
2233      global_ocean.90x40x15 experiment, except that it uses
2234      the exf (and cal) package instead of the
2235      external_fields_load routine (cf README file).
2236    
2237    checkpoint46m_post
2238    o modified testscript to return -- when there are no lines of "%MON" output
2239    o added new flag "quasiHydrostatic" for QH mode
2240      and new routine quasihydrostaticterms()
2241    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
2242      New routine: mom_u_coriolis_nh()
2243    o fixed sign of non-hydrostatic metric terms in u and v equations.
2244      Depend on correct sign of gravitySign.
2245    o added work.pc* to .cvsignore in aim directories using ifc
2246    o introduced flag for controllin non-hydrostatic metric terms
2247    o removed gravitySign from PARM04
2248    o switched to g77/ifc from pgf77 in aim experiments
2249    
2250    checkpoint46l_post
2251    o made convective adjustment work with pressure coordinates:
2252     - changed the direction of k-loop in convective_adjustment.F for the
2253       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
2254     - adjusted the reference pressure k-index in convective_adjustment.F
2255     - adjusted the convection condition in convect.F (in analogy to
2256       calc_ivdc.F)
2257     - convective_adjustment no longer computes anything on the halos
2258     - removed the warnings about negative salinity from find_rho.F and
2259       find_alpha.F; instead the new routine look_for_neg_salinity, called
2260       at the beginning of find_rho, find_alpha, and find_beta, does a
2261       check of the entire slice, if CPP-option
2262       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
2263    checkpoint46l_pre
2264    
2265    checkpoint46k_post
2266    o fixed the verification/global_ocean.90x40x15 experiment:
2267     - new bathymetry (the world according to A., JMC, and M.)
2268     - new initial fields and forcing fields (*.bin files)
2269     - new POLY3.COEFFS (for the next release one should switch to a full
2270       equation of state: JMD95P or MDJWF)
2271     - fixed several errors and redundancies in the data file
2272     - experiment uses looped cells
2273     - added matlab directory with diagnostic scripts for plotting of output
2274    
2275    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
2276     - read AIM physics parameters from a file (data.aimphys)
2277     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
2278    
2279    checkpoint46j_post
2280    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
2281    o move wVel computation at the end of the time step, in S/R integr_continuity
2282    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
2283    o update timeave pkg for wVel diagnostic.
2284    checkpoint46j_pre
2285    
2286    checkpoint46i_post
2287    o Clean up AIM package (and keep the results unchanged):
2288      include CPP_OPTION and use IMPLICT NONE in all routines ;
2289      declare all the variables _RL ; use _d 0 for all numerical constants.
2290      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
2291    
2292    checkpoint46h_post
2293    o cleaned up the use of rhoNil and rhoConst.
2294      - rhoNil should only appear in the LINEAR equation of state, everywhere
2295        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
2296        and the dynamical equations are all divided by rhoConst
2297    o introduced new parameter rhoConstFresh, a reference density of fresh
2298      water, to remove the fresh water flux's dependence on rhoNil. The default
2299      value is 999.8 kg/m^3
2300    o cleanup up external_forcing.F and external_forcing_surf.F
2301      - can now be used by both OCEANIC and OCEANICP
2302    checkpoint46h_pre
2303    
2304     Added code to convert surface volume flux (fresh water) into
2305     a mass flux when using P coordinates in the ocean (OCEANICP).
2306     Note: It assumes you have set rho0=rhoConst=density of fresh water.
2307    
2308    checkpoint46g_post
2309    o Include a new diagnostic variable phiHydLow for the ocean model
2310      - in z-coordinates, it is the bottom pressure anomaly
2311      - in p-coordinates, it is the sea surface elevation
2312      - in both cases, these variable have global drift, reflecting the mass
2313        drift in z-coordinates and the volume drift in p-coordinates
2314      - included time averaging for phiHydLow, be aware of the drift!
2315    o depth-dependent computation of Bo_surf for pressure coordinates
2316      in the ocean (buoyancyRelation='OCEANICP')
2317      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
2318        Theta, Salinity, and Pressure in the parameter list. This routine is
2319        presently contained in find_rho.F. This routine does not give the
2320        correct density for 'POLY3', which would be a z-dependent reference
2321        density.
2322    o cleaned up find_rho
2323      - removed obsolete 'eqn' from the parameter list.
2324    o added two new verification experiments: gop and goz
2325      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
2326    checkpoint46g_pre
2327    
2328    checkpoint46f_post
2329    o Enable tangent linear (forward mode) gradient checks:
2330      - extended active file handling to g_... files
2331      - added TANGENT_SIMULATION to theSimulationMode
2332      - extended grdchk package accordingly
2333    o added tangent linear setup in verification/carbon/code_ftl
2334    o added adjoint setup in verification/front_relax/code_ad
2335    
2336    checkpoint46e_post
2337    o Added new equation of state -> MDJWF
2338      - EOS of McDougall et al., 2002, JAOT, submitted
2339      - caveat: the equation of state is only valid for a smaller (more
2340        realistic?) range of values than JMD95P/Z and UNESCO
2341      - added masks to the calculation of pressure in store_pressure
2342      - added more check values for density in check_eos (ini_eos.F), some of
2343        the old check values are out of the range of the MDJWF-eos, so don't
2344        expect perfect matches for those
2345    checkpoint46e_pre
2346    
2347    checkpoint46d_post
2348    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
2349      'OCEANICP', also initialised field pressure correctly in ini_eos in the
2350      case of pressure coordinates. eosType='JMD95Z' in
2351      combination with buoyancyRelation='OCEANICP' now causes an error.
2352    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2353      in find_alpha/beta.
2354    checkpoint46d_pre
2355    
2356    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
2357      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
2358    
2359    checkpoint46c_post
2360    o Changes necessary for ocean in p-coordinates
2361     -  Added new buoyancy relation = 'OCEANICP'
2362     -  Added new parameters = gravitySign (this used to be contained inside
2363        the factor dRdZ which I added when we first switched to R coordinates).
2364     X GM/Redi is not compatible (yet)
2365     X bottom drag and no-slip need to be debugged.
2366    checkpoint46c_pre
2367    
2368    checkpoint46b_post
2369    o Added new equation of state -> JMD95Z and JMD95P
2370      - EOS of Jackett and McDougall, 1995, JAOT
2371      - moved all EOS parameters into EOS.h
2372      - new routines ini_eos.F, store_pressure.F
2373    o Added UNESCO EOS, but not recommended because it requires
2374      in-situ temperature (see JMD95)
2375    o Modified formatting for knudsen2.f in utils/knudsen2 and added
2376      unesco.f to be used with POLY3
2377    checkpoint46b_pre
2378    
2379    checkpoint46a_post
2380    o Added (atmospheric) pressure loading
2381      - new field in FFIELDS.h, etc...
2382      - new cpp flag ATMOSPHERIC_LOADING
2383    o Changed hFacC to _hFacC in calc_phi_hyd.F
2384    o Added SHORTWAVE_HEATING to some files for consistency
2385    checkpoint46a_pre
2386    
2387    checkpoint46
2388    further merges from release1_p5
2389    o new ctrl package
2390      - adopted from ECCO environment to enable optimization
2391      - added Eliassen Palm fluxes to controls
2392    o added Eliassen Palm flux controls to gradient check package
2393    o cost package
2394      - Compatible with new ctrl package
2395      - added Eliassen Palm cost hooks
2396      - modif's of existing cost functions
2397    o Adjoint-related bug fixes in kpp:
2398      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
2399      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
2400    o autodiff package
2401      - flow directives:
2402        + new for S/R do_the_model_io
2403        + enhanced for S/R checkpoint
2404        + new gmredi.flow
2405      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
2406        disable adcommon.h/g_common.h by default.
2407      - fixed problem for adjoint of global_max
2408    o modified verification/carbon/
2409    o New setup for adjoint of global_ocean
2410    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
2411    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
2412    o incorporated hooks for sponge layer code (external_forcing.F)
2413    
2414    checkpoint45d_post
2415    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
2416    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
2417      (affects plume_on_slope "cg2d" output)
2418    o add new parameter deltaTfreesurf for free-surface time stepping
2419    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
2420    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
2421    o change phiMin in exp1 (to agree with documentation)
2422    o add new flags:
2423     - T,S forcing inside/outside Adams-Bashforth
2424     - turn off temp,salt advection and/or forcing
2425     - for each tracer, define internal flag for multiDimAdvection & A-B
2426    o monitor: change definition of KE to check conservation of Energy
2427    
2428    checkpoint45c_post
2429    o Removed f90 comments ("!")
2430    o Modified initialisations to enable exf package for MITgcm
2431      (without invoking ECCO_PACKAGE).
2432    o modifications to gradient check package (Martin Losch)
2433      - enable centered differences
2434      - modified format of standard output
2435    
2436    checkpoint45b_post
2437    o cleaned exchange calls in cg2d
2438    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
2439    o included CPP option SINGLE_LAYER_MODE in thermodynamics
2440      to configure barotropic setup (Martin Losch)
2441    o moved some initialisations within bi,bj loop in dynamics
2442      (TAF flow dependency)
2443    o in initialise_varia, moved call packages_init_variables
2444      before convective_adjustment_init
2445      (corresponding adjustment of TAF tape initialisation).
2446    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
2447    
2448    checkpoint45a_post
2449    o compute Rho over the whole domain (extend iMin,jMin indices)
2450    o specific exchange for X-slice domain (case Ny=1)
2451    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
2452    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
2453    
2454    checkpoint44h_post = checkpoint45
2455    o Fix to restore differentiability:
2456      place at which packages_init_variables is called in
2457      initialise_varia is crucial for reverse control flow.
2458    o modifications in GMRedi to enable stable adjoint
2459      (corresponding modif's in thermodynamics, dynamics)
2460    o added missing hook for sponge layer code in external_forcing
2461    o modified test cost functions
2462    o storing in gad_advection (plus removal of write(0,*)!
2463    o missing headers TR1.h added in convective_adjustment routines
2464    o errorMessageUnit set non-equal zero in eeboot
2465      (conflict on some platforms, e.g. IBM SP3)
2466    o modified carbon verif.
2467    
2468    checkpoint44h_pre
2469    o vertical grid option: allow to put the Interface at the middle between
2470      2 cell-centers ; replace delZ in pkg/kpp by drF.
2471    o GM Advective form: Tracers are advected using the residual transport (=
2472      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
2473    
2474    checkpoint44g_post
2475    o fix surface correction term in multiDimAdvection (affects plume_on_slope
2476      results) ; ifdef missing in thermodynamics.F
2477    
2478    checkpoint44f_pre,checkpoint44f_post
2479    o added PTRACERS package
2480      This allows an arbitrary number of passive tracers to be integrated
2481      forward simultaneously with the dynamicaly model.
2482      + Implemented so far:
2483        - basic forward algorithm (time-stepping, advection, diffusion, convection)
2484        - I/O and checkpointing
2485        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
2486      + Not implemented so far:
2487        - KPP
2488        - OBCS
2489      + No specific example supplied (yet) but global_ocean.90x40x15 has the
2490        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
2491        line in data.pkg.
2492      + This package is disabled by default since it increases storage.
2493    
2494    
2495    o testscript: added -cleanup option
2496    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
2497                 b) enable to filter 2D fields.
2498    
2499    checkpoint44e_pre,post
2500    o re-wrote convective adjustment to use pre-calculated weights
2501      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
2502      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
2503      Original calls to convect() still in place.
2504    
2505    chkpt44d_pre,post
2506    o added missing EXCLUDE_MONITOR flags
2507    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
2508      (incompatible typ in MIN/MAX expressions caused problems
2509      on IBM SP3)
2510    o in genmake added variable MAKEDEPEND
2511      plus resetting for case SunOS
2512    o added timer_stats.c routine for IBM SP3
2513    o removed variables in dynamics
2514    !!! I forgot to create tag chkpt44d_pre !!!
2515    !!! But chkpt44d_pre = chkpt44c_post    !!!
2516    
2517    o real fresh water flux implemented with non-linear free-surface.
2518    
2519    chkpt44c_pre,post
2520    o few fix (mask in shap_s2, EmPmR in external_field_load,
2521      USE_NATURAL_BCS in solve_for_P);
2522    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
2523    
2524    checkpoint44b_pre/_post
2525    o merge of relevant stuff from the ecco-branch:
2526      - genmake: removed $S64 overwrite for case SunOS
2527      - pkg/exf: update and corrections for field swapping and obcs
2528      - pkg/ecco: parameter lists for the_model_main, the_main_loop
2529                  harmonized between ECCO and MITgcm
2530      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
2531                      updated checkpointing_lev... lists for obcs
2532      - model/src: minor changes in forward_step, plot_field
2533                   added directive for divided adjoint in the_main_loop
2534      - pkg/mdsio: added mdsio_gl_slice
2535    
2536    o check parameters & config (chkpt44a_pre,post)
2537    o OBC and NonLin_FrSurf.
2538    
2539    checkpoint44
2540    o fix bug in mom_vi_del2uv
2541    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
2542    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
2543    o update AIM experiments (NCEP input files)
2544    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
2545    o added some stuff for AD
2546    
2547    checkpoint43
2548    o added two new advection tests
2549    o added global 4x4 degree ocean test
2550    o added test of H&S94 with free surface on cube
2551    o some final mods for gradient check, adjoint,...
2552    
2553    checkpoint42
2554      Fixed AD-related problems:
2555    o Store directives up-to-date with re-arranged Adams-Bashforth
2556      (mainly thermodynamics.F)
2557    o New store directives for multi-dim. advection schemes
2558      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
2559      * new common block and key passkey
2560      (mainly gad_advection.F)
2561    o Modified store directives for split of dynamics/thermodynamics
2562      for the case ALLOW_KPP
2563    o Cleaned argument list for timestep_tracer.F
2564    
2565    checkpoint41
2566    o re-formatted/added comments in prologues of key subroutines
2567      to work with protex
2568    
2569    checkpoint40
2570    o moved calc_gs, calc_gt and calc_tr1 back to model/src
2571    o added FLT (floats) package from Arne along with demo. experiment
2572    o re-arranged Adams-Bashforth scheme for tracers to allow easier
2573      implementation of forward-in-time forcing terms
2574    o more mods for non-linear free-surface including new variable
2575    o modified multi-dim method to work on cube
2576    o bug fix in KPP (from DM)
2577    
2578    checkpoint40pre9
2579    o added DST advection schemes
2580    o fix MPI bug on SGI's
2581    o modifications for non-linear free-surface
2582    o fixed conditionals for fixed flow/passive tracer only mode
2583    o added tension/strain form of stress tensor
2584    o changes to commenting of arguments for TAF/TAMC
2585    o added/updated many matlab scripts
2586    o added multi-dimensional advection method for tracers
2587      
2588    checkpoint40pre8
2589    o new package rw/
2590      Added method for dumping intermediate local arrays:
2591      mdsio_writetile - same as mdsio_writefield except works from inside
2592                        bi,bj loop
2593      mdsio_writelocal - same as mdsio_writetile except works for local
2594                         arrays
2595      write_local_r? - higher-level wrapper for mdsio_writelocal
2596      Controlled by diagFreq. Defaults to zero (ie. no dumps)
2597      Example given at end of mom_vecinv.F that dumps some local arrays.
2598    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
2599      control flux-form versus vector invariant code.
2600      Switch is runtime flag vectorInvariantMomentum (defaults to false)
2601      or genmake -DISABLE ...
2602    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
2603      (additional storing is now needed for case vecinv;
2604      currently nothing implemented to switch this storing off
2605      in case fluxform is used since no CPP flag available).
2606    
2607    checkpoint40pre7
2608    o bug fix in dynamics.F
2609      calc_viscosity called before k=1,Nr loop.
2610    o added some #ifdef's ALLOW_PASSIVE_TRACER
2611    o cleaned initialisations in ctrl_map_ini
2612      related to TAF
2613    
2614    checkpoint40pre6
2615    o split dynamics into thermodynamics & dynamics
2616    o corresponding split of calc_diffusivity into
2617      calc_diffusivity, calc_viscosity
2618      (kpp_calc_diff, kpp_calc_visc).
2619    o Added diffkr, kapgm to control variables
2620    o bug fix in gmredi_slope_limit for ldd97
2621    
2622    checkpoint40pre5
2623    o proper initialization of Adams-Bashforth time stepping
2624      + uses forward step for very first step of model (iter=0)
2625    o re-generated *all* output since almost all output is modified by this
2626      change (sorry but we've been putting this one off for about 2 years)
2627      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
2628        *not* regenerated since they are already out of date and I don't
2629        want to create the impression that they are suddenly working.
2630    o removed KAP stuff for DEC's
2631    o modified/added many .cvsignore files in */code and */input
2632    o added new expt "solid-body.cs-32x32x1"
2633      + this uses an alternative form of ini_curvilinear_grid.F which
2634        is not necessarily any better than the current one...
2635    
2636    checkpoint40pre4
2637    o added re-initialisations of utrans,vtrans,rtrans in
2638      calc_common_factors which are crucial for TAF.
2639    o extended iMin,jMin range for calc_common_factors,
2640      calc_diffusivity
2641    o added option ALLOW_PASSIVE_TRACER
2642    o a few minor updates and fixes
2643    
2644    checkpoint40pre3
2645    o created calc_gtr1.F for gad package
2646    o split the_main_loop and re-introduced forward_step
2647    o some recomputations of nIter0 for TAMC
2648    
2649    checkpoint40pre2
2650    o Updated to latest branch of AJA, JMC
2651    o Added gradient check package
2652    o Added routines for passive tracer handling
2653    o Added carbon sequestration sensitivity experiment
2654    
2655    checkpoint39
2656     o Modifications and fixes to support TAMC
2657       (mainly missing or wrong directives)
2658     o Corrected common blocks when fooling TAMC to produce adjoint I/O
2659       in addummy_in_stepping
2660     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
2661     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
2662     o Included following packages:
2663       cal: calendar
2664       exf: external forcing
2665       ecco: essential routines to control use of cal, exf
2666             (NB: this is not the full ECCO environment)
2667     o disabled some packages by default in genmake
2668    
2669    checkpoint38
2670     o see notes_c37_adj.txt
2671     o corrected wrong layer index in external_forcing_t
2672     o replaced the_main_loop/forward_step by the_main_loop
2673     o removed forceoutput from write_state
2674       (replaced criteria for initial/final state)
2675     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
2676    
2677    checkpoint37
2678     o mdsio.F routine split and packaged in pkg/mdsio
2679       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
2680        used unless genmake -disable=mdsio)
2681     o allow a more precise surface-geopotential gradient for the atmosphere
2682       taking into account the change in space of Alpha (=1/rho) at the surface.
2683     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
2684       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
2685     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
2686       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
2687       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
2688     o Time-Average diagnostics defined as a pseudo package "timeave".
2689     o pickup files : old pickup (before c35) did not work with new code (c35
2690       and after) unless activating 2 commented lines in initialise-varia.
2691     o Non-Hydrostatic pickup file Pb fixed.
2692     o bug with Rigid-lid version (since c35) fixed.  
2693    
2694    checkpoint36
2695     o implement Crank-Nickelson barotropic time-stepping
2696     o recover Time-Average diagnostics
2697     o fix Pb in checkpoint (PR#19)
2698     o AIM become a standard package ; clean unused CPP_kees
2699    
2700    checkpoint35
2701     o subtantial rewrite of dynamics.f
2702     o allows staggered time-stepping
2703     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
2704     o added bottom drag (linear + quadratic)
2705    
2706    checkpoint34
2707     o Modified exchange routines for correct reverse simulation.
2708     o Added verification output to comply with bug fix in impldiff.F
2709       as of c33 (exp2, natl_box).
2710     o Corrected store directives in dynamics.F
2711     o Corrected array boundaries in impldiff.F
2712     o Corrected array dimensions in gmredi.
2713       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
2714     o Added routine GLOBAL_SUM_INT to global_sum.F
2715     o Added mdsio_gl.F for ECCO purposes.
2716    
2717  checkpoint33  checkpoint33
2718   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
2719   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h

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