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revision 1.193 by edhill, Thu Oct 23 04:41:40 2003 UTC revision 1.941 by dimitri, Thu Jan 17 22:33:07 2008 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  untagged  o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
8      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
9    o verification/seaice_obcs: updated for restart test and latest options
10    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
11      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
12      for now this is only available for the C-grid code and also within
13      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
14    
15    checkpoint59m
16    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
17      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
18    o gad_som : fix flux output (& diagnostics) to have same units as other  
19      advection scheme fluxes (was previously multiplied by deltaT).  
20    o added verification/seaice_obcs both to test seaice open boundaries
21      and to provide an example matlab scrpt for generating them
22    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
23    o pkg/salt_plume: clean up salt_plume_frac.F to
24      remove redundancy in PlumeMethod 1 and 4
25    o pkg/kpp: added saltplume diagnostics
26    o pkg/obcs and pkg/seaice:
27      - do not set uice and vice to zero when OB*icefile are unspecified
28      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
29      - moved seaice tracer obcs after call to seaice_growth
30    o pkg/salt_plume: added various options for salt plume depth
31      criterion and for vertical distribution of the salt
32    
33    checkpoint59l
34    o pkg/ptracers: new version of ptracers pickup:
35      read meta file and write only fields which are needed to restart.
36      ( same logic as main pickup file ; also using pickupStrictlyMatch )
37    o pkg/seaice:
38      - add timescale for melting due to warm mixed layer as a means of
39        setting SEAICE_availHeatFrac more conveniently
40      - add a CPP-flag/runtime parameter check for flooding algorithm
41      - reformulated availHeat in seaice_growth.F to be independent of AREA
42    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
43      unit changes
44    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
45    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
46      SX vector computer.
47    o pkg/seaice:
48      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
49        seaice forcing fields can now be read only through pkg/exf
50      - removed some unused halos
51    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
52    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
53      or U/VICE from U/VWIND before computing U/VSTRESS
54    
55    checkpoint59k
56    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
57      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
58    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
59      all experiments pass when compile with un-initialised var. checking option.
60    o added pkg/salt_plume
61    o script to test restart (for now, in MITgcm_contrib/jmc_script)
62    o pkg/seaice: new read/write pickup version.
63      read meta file and write only fields which are needed to restart.
64      ( same logic as main pickup file ; also using pickupStrictlyMatch )
65    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
66    o lab_sea.hb87: modify the domain & update output.hb87.txt :
67      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
68      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
69      process. Fixed here by closing the domain at the Northern boundary.
70    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
71    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
72      a set of consecutive levels in/from a 3-D array.
73    o pkg/ptracers:
74      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
75      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
76    
77    checkpoint59j
78    o in pkgs: dic, obcs, offline, rbcs:
79      standard way to compute coeff. for time interpolation between 2 time reccords
80      which retains full precision (& make results less dependent on compiler).
81      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
82    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
83      packages instead of reading ice cover and wind speed separately
84    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
85     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
86      to allow to compile customized code before the update)
87    o cleaning-up:
88      - fix CPP instruction syntax in pkg/obcs
89      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
90        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
91      - fix some threads issue in IO parts.
92    o pkg/dic:
93      - add tons of "_d 0" (--> much better testreports !)
94       and then update outputs of tutorial_global_oce_biogeo
95    o pkg/mom_fluxform:
96      add a special version of momentum advection intended to conserve momentum
97      next to a bathymetry step or a coastline edge. (default = off = #undef)
98    o new read/write pickup version:
99      - for now, only implemented for main (mdsio) pickup file.
100      - write out only what is needed to restart; merge pickup_nh , pickup_ph
101        and main pickup together.
102      - read meta file; read only what is needed to restart; stop if a field
103        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
104        if it make sense (even if the restart is not perfect).
105      - if no meta file, assume that pickup to read corresponds exactly to
106        a pickup that would currently be written.
107      - read pickup written in the old format (until checkpoint59i) if it
108        recognizes an old meta file (no field-list).
109      - add a meta file in exp. which starts from a pickup: 2 cases:
110        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
111         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
112        b) a meta file describing the content of the associated pickup file
113         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
114    o pkg/mdsio & pkg/rw:
115      - new routine to read a meta file ; new set of routine to read
116        Multiple-fields file (with meta file).
117    o added open boundary conditions capability for seaice
118        HSNOW, HSALT, UICE, and VICE
119    
120    checkpoint59i
121    o adjoint:
122      * fix multiDimAdvection adjoint
123        (partial recomputation problem by TAF for fVerT(:,:,kDown)
124        and comlev1 size definition (maxpass vs. max. number of tracers)
125      * verification/global_ocean.90x45x15 adjoint now tests
126        NLFS and multiDimAdvection using DST3 (=30)
127      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
128    o pkg/kpp: add "_d 0" to real constant (if missing);
129      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
130      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
131    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
132      for internal parameters related to restart process (formerly from PARAMS.h)
133      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
134    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
135      as argument. (only atm2d & obcs write_pickup have not yet been updated)
136    o pkg/monitor:
137      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
138      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
139      - account for deep Atmosphere factor and density factor (anelastic)
140    o added open boundary conditions capability for seaice HEFF and AREA
141    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
142      thermodynamics
143      - requires a little reorganization, which affects the testreport results
144        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
145        so that now the conservative form is tested
146      - add a few comments
147    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
148    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
149    o add new diagnostics to seaice: advective, diffusive fluxes (only for
150      multidim-advection, for scheme 2 they are not filled) and transports,
151      thermodynamic growth rates
152    o change units of EmPmR (inside the code, + within coupling interface)
153      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
154      Affects results @ truncation level (cg2d match) and update output of
155       experiments: lab_sea(6), global_ocean.90x40x15(10),
156      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
157      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
158      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
159      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
160    
161    checkpoint59h
162    o pkg/exf:
163      - improve vectorization by moving if-statement out of loops in
164        exf_mapfields, exf_radiation
165      - exf_bulkformulae.F: introduce 2D fields and vectorize code
166    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
167    o testreport:
168      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
169        monitor & update offline_exf_seaice exp. output.
170      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
171    o pkg/seaice:
172      - bug fix in the evp solver: boundary conditions were affected be
173        masking of zMax/zMin (changes results)
174      - minor bug fix in boundary conditions in seaice_calc_strainrates
175        (changes results for no_slip)
176      - seaice_lsr.F: make interpolation of eta dependent on boundaries
177      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
178      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
179        stress formulation and no-slip boundary conditions
180    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
181      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
182    o pkg/seaice: a first HSALT time stepping equation has been checked in
183    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
184      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
185      without requiring DO-IF statements
186    o pkg/thsice:
187      use continuous power-law function for partition of energy between lateral
188      melting/freezing and thinning/thickening ; old code using step function
189      still available with #undef THSICE_FRACEN_POWERLAW
190      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
191    o testreport: change AD testing : check against results/output_adm.txt
192      using same scripts as for forward test.
193    
194    checkpoint59g
195    o adjoint testing: in preparation for changing testreport:
196      - output format: cost and grad written on separated lines
197      - ad output results in directory "results" (instead of "results_ad")
198    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
199    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
200    o pkg/ecco: allow user defined cost function contributions
201    o testreport:
202      Allow to choose (per experiment) the list of tested output variables
203       and the main variable (used to issue a pass/FAIL ) ;
204      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
205      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
206      Also modify printing of summary:
207       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
208       b) echo the list of tested variables in the individual summary.txt of
209          each experiment.
210    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
211      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
212      (but still depend on the tile decompostion of the domain).
213    o pkg/seaice: change a discretization detail to make the B-grid code
214      "more symmetric". This change is likely to remove all "ridges/leads" that
215      where quasi-aligned with the grid in B-grid solutions. It may also be
216      the solution to the stress coupling issues with the B-grid.
217    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
218      remove .cvsignore from input dir. (since testreport no longer run here).
219    o pkg/thsice:
220     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
221     - fix reshaping of sea-ice just after advection:
222       melt all the ice only if ice-volume is too small.
223     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
224       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
225     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
226    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
227      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
228    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
229      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
230      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
231      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
232      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
233      -> update output.txt
234    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
235     this affects truncation error: -> update output.txt of exp:
236      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
237      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
238    
239    checkpoint59f
240    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
241    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
242      a bounded range (in forward mode)
243    o pkg/ecco, ctrl, autodiff and mom_common:
244     internal parameter controls, completements of implementations
245    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
246    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
247      (not seem any difference in testing results).
248    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
249       at face corners.
250    o pkg/generic_advdiff:
251     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
252      loop range indices for computing vertical advection tendency
253      and do the calculation in the interior only (no overlap) ;
254      for now, only implemented for SOM advection (to save CPU time).
255     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
256    o exch2 adjoint
257      First set of changes:
258      - add exch2 hand-written adjoint templates
259      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
260        This will require cleanup in pkg/autodiff/*.F
261        (changed routines currently kept separate in verif. code/)
262      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
263        that used to hide exch2 or cubed-sphere specific code
264        (commented via 'cph-exch2')
265    o pkg/seaice
266      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
267    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
268       output of global_ocean.cs32x15.thsice .
269    
270    checkpoint59e
271    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
272      for B-grid vector (not yet tested) and C-grid vector (<- only used
273      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
274    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
275      (#ifdef ALLOW_SALT_PLUME)
276    o gather_2d/scatter_2d: removed halo regions
277    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
278      scheme and the corresponding test case (under front_relax dir). For now,
279      only available with Skew-flux form and not yet tested in realistic set-up.
280      adjoint: store directives updated, but gradient checks deteriorated,
281      so maybe GM/Redi adjoint is now broken.
282    o seaice adjoint
283      * add AREA, HEFF, HSNOW as control variable
284        (should not change lab_sea results)
285      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
286    o pkg/seaice:
287      * added computation of saltFlux in seaice_growth;
288        For time being, sea ice salinity is assumed constant
289        contribution of snow flooding to freshening of sea ice is neglected.
290        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
291        defaults to 0.0 in order to maintain backward compatibility.
292        Typical values for SEAICE_salinity are 4 to 10 g/kg.
293      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
294      * added SEAICE_availHeatFrac, which specifies fraction of surface level
295        heat content used to melt or grow ice
296      * commented out cap of HICE: it helps keep ice thinner
297      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
298      * applied OBCS T/S mask to HEFFM sea ice mask
299    
300    checkpoint59d
301    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
302     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
303     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
304    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
305     and change default value of parameter "GM_Small_Number";
306     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
307       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
308       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
309    o pkg/ecco: cost function when applying pkg/smooth to controls
310    o pkg/ctrl: add forcingPrecond run time parameter
311    o pkg/seaice:
312     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
313     - fix bug in metric terms of u-equation in LSR solver (implicit part),
314       changes verification/lab_sea
315     - rearrange implicit part of u-equation in LSR solver to make it easier to
316       read, understand, and debug. This causes changes at the truncation level.
317     - fix (serious) bug in the boundary conditions (sign error in the implicit
318       part) of the LSR solver. Changes all LSR results.
319     - fixed problem with HSNOW initialization to avoid thick snow when AREA
320       is initilized with small values - does not change lab_sea results.
321     - added HsnowFile initialization capability
322    o pkg/smooth: addition to model/src and pkg/ctrl so allow
323     initialization of pkg/smooth and application to control vector
324    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
325    o dependencies: pkg/profiles requires pkg/cal
326    o pkg/profiles:
327     - added option ALLOW_PROFILES_GENERICGRID
328         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
329         that interpolation information (grid points and coefficients) is provided
330         within the netcdf input files.
331         -> sample matlab scripts can be found in MITgcm_contrib/gael
332         that allow you to prepare netcdf input files.
333     - also modified: cleaner include statements, cleaner error print statements,
334       cleaner stops when error, and more tests of the netcdf input files consistency.
335    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
336    o pkg/seaice:
337     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
338       requires a new routine: seaice_diagnostics_fill.F
339     - make sure that seaice does not move if not forced (pressure replacement
340       method, Hibler and Ip, 1995), changes results
341     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
342     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
343       It is turned off by default (=-1.), because it changes the results.
344     - make it possible to read AREA from a file, too.
345    
346    checkpoint59c
347    o add S/R and diagnostics for oceanic mixed-layer depth
348    o move GMRedi call after all vertical mixing schemes (including KPP)
349    o pkg/thsice:
350     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
351      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
352    o pkg/obcs:
353     - bug fix for balance code
354    o pkg/seaice:
355      - allow values of SEAICE_elasticParm > 1
356      - add new parameter SEAICE_evpTauRelax as an alternative
357        to SEAICE_elasticParm
358      - make lsr boundary conditions free slip (by default), changes result
359      - add code for no slip boundary conditions for lsr
360      - set minimum of zeta to zero (and not 4e8) (changes results)
361      - add a cap on AREA after advecting AREA if seaice_growth is not called
362    o change calculation of Visbeck K:
363      - no longer depend on tapering scheme; instead, compute slope (limited
364        by GM_maxSlope). this is equivalent to what was comuted before with
365        clipping or linear tappering.
366      - fix vertical averaging (wrong by 1/2 level)
367      - leave the old version (but will not be maintained) within
368        #ifdef OLD_VISBECK_CALC / #endif
369      - update output of exp. ideal_2D_oce
370    o change error catch in calc_r_star to improve vectorization
371    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
372      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
373    o adjoint:
374      Re-organized adjoint checkpointing according to Matt Mazloff
375      (but with modifs/completions/cleanups)
376      Storing is now bundled into large arrays to optimized I/O
377      (and second step in cleanup of the_main_loop)
378    
379    checkpoint59b
380    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
381      - export/import (between ocean & coupler) fields needed for ocean DIC.
382    o pkg/seaice:
383      - get rid of three more exchanges seaice_calc_viscosities (required
384        different loop boundaries in seaice_lsr and seaice_ocean_stress)
385      - bug fix in seaice_ocean_stress (update of lab_sea required)
386      - reduce loop boundaries to necessary minimum also in seaice_evp
387      - go back to the old way of computing deltaC/Z as the adjoint likes that
388        better
389    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
390      passive tracer to an Age Tracer) + update output.txt
391    o pkg/exf:
392      - implement A-grid / C-grid selection for wind-stress input files.
393      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
394      for now, in exf_bulk_largeyeager04.F only :
395      - change implementation for case where windspeed + 2. components wind-stress
396        are read-in. AND use rhoConstFresh to convert evap.
397    o pkg/seaice:
398      - use correct EXCH_UV for wind-forcing (on A-grid).
399      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
400        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
401    o pkg/exf:
402      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
403      EXF_INTERPOLATION:
404      - merge global_with_exf/code version of exf_interp_read.F
405        to the main code ;
406      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
407        reading the file ; Important: This options needs to be defined to recover
408        previous code.
409        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
410      - no longer loose real*8 precision along the way when using exf_iprec=64.
411    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
412      - change discretisation of evp-solver in order to avoid another exchange
413        (changes lab_sea) and clean up a little
414      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
415        help the adjoint (this also changes the results slightly)
416      - add a few "_d 0" where they had been missing in seaice_evp.F
417      - cleaning up: remove unused seaice_calc_rhs.F
418    o pkg/exf: some cleaning-up:
419      - change various "constants" into runtime parameters
420      - cleaned-up Large&Yeager04 routine which should eventually
421        replace exf_bulkformulae.F (changed names of S/R and CPP)
422        and merged various ALLOW_ATM_WIND options
423     only used with thsice pkg (in thsice_get_exf.F):
424      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
425        which are used when useStabilityFct_overIce=TRUE (= the default)
426      - change default values of ice & snow emissivity and scale downward LW
427        by ice & snow emissivity.
428    o pkg/thsice:
429     fix few little problems, in thsice_calc_thickn.F:
430      - growth vertically (and not laterally) if iceFrac == iceMaskMax
431      - melt only laterally if hIce < hThinIce (as the comments say)
432      and in thsice_extend.F:
433      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
434      - start to form ice as soon as the minimum ice-volume is reachable.
435     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
436      and cpl_aim+ocn
437    o pkg/kpp
438     - move computation of surface related input fields to KPP into a new
439       subroutine kpp_forcing_surf.F
440     - remove wrong (within bi,bj loops) EXCH calls.
441     - little cleaning (add argument myThid in last position, cvs header ...)
442     - for now, fix conservation problem by exchanging KPPviscAz (may not
443       be the best fix)
444    o pkg/seaice
445     - check for inconsistent evp parameter/cpp-flag combination
446     - remove leftover errIO flat for obsolete name list error handling
447    o OpenAD
448     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
449    
450    checkpoint59a
451    o pkg/seaice: some parameter clarifications and a little bit of clean up
452    o pkg/thsice: rename run-time parameters:
453       himin       -> hIceMin
454       himin0      -> hThinIce
455       hihig       -> hThickIce
456       i0          -> i0swFrac
457       transCoef   -> bMeltCoef
458       frac_energy -> fracMelting
459      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
460       with default values (for now) that do not change the results.
461      remove old version of thsice vars advection in pkg/seaice.
462    o in FFIELDS.h:
463      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
464      - make pLoad & sIceLoad always available (but still only used if
465         ATMOSPHERIC_LOADING is #define).
466    o pkg/kpp: replaced _KPP_RL with _RL
467    o bug fixes for vertical diffusivity computations when both KPP and
468        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
469        are no longer updating the vertical diffusivity array
470        (passed as argument) but are (re-) setting those arrays.
471    o pkg/seaice: fix bug in evp solver, while doing that
472      - change (improve?) discretization of stress computations for both
473        cgrid-lsr and evp solver
474      - add a new routine to compute strain rates
475      - the above changes lab_sea results
476      - add no slip conditions for evp solver (off by default), lsr-version
477        may follow
478      - fix exchange for shear at Z-points (does not change lab_sea)
479      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
480        (to force the user to pick a time step since there is not "safe" way
481        of choosing it)
482      - add principal stress diagnostics
483      - rearrange fields for evp a little to avoid having to call a: too many
484        exchanges and b: exchanges for stress trensor components which we do
485        not have.
486      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
487        of evp, complete rewrite for lsr case (latter is does not yet work
488        in all cases)
489    o pkg/kpp: add code to have mixing in shelf ice caverns
490      - add myThid to all kpp routines (long overdue)
491    
492    checkpoint59
493    o pkg/exf:
494      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
495        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
496      - move exf header files from lower_case.h to UPPER_CASE.h ;
497        add missing cvs Header & Name
498      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
499      - add namelist param. selectStressGridPosition, exf_monFreq
500      - retire many _CLIM routines, and remove data.exf_clim
501        + params moved to data.exf
502        + climsst, climsss now handled by exf_set_gen, i.e.
503          climss?period=0 refers to constant field,
504          climss?period=-12 to monthly forcing
505      - split up namelists in data.exf
506    o pkg/seaice:
507      - remove seaice_exch and seaice_exch_uv
508      - remove superfluous exchange of theta
509      - add myThid to seaice_budget_ocean/ice
510      - add new interface for atmospheric wind forcing (C-grid only)
511        + new routine
512        + two new field (taux, tauy for stress over ice)
513        + removed one global field (DAIRN) for C-grid case only
514    o pkg/thsise
515      - 2nd set of modifs for thsice adjoint in conjunction with exf
516    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
517    
518    checkpoint58y_post
519    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
520      vertical diffusivity, similar to that in MOM4; turned on using
521      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
522      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
523    o Added capability for 3D specification of background vertical diffusion
524      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
525      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
526      "data" file that contains the 3D vertical diffusivity coefficients.
527    o ice dynamics (pkg/seaice) with thsice thermodynamics:
528      - add code within pkg thsice to advect & diffuse sea-ice fields
529      similar to (and will replace) what has been added in  seaice_advdiff.F,
530      but: - conserving Mass, Heat & Salt.
531           - better when using non-linear advection scheme (not yet fully tested)
532           - can also be used in atmospheric set-up (for now, only the diffusion).
533    
534    checkpoint58x_post
535    o IO option for global-file compact format:
536      - add options when generating topology (utils/exch2/matlab-topology-generator)
537      - add I/O capability (pkg/mdsio).
538      - adapt utils/matlab/rdmds.m to read this format.
539      for now long-line format not yet supported by pkg/mdsio (& exch2).
540    o shelfice: add a few diagnostics
541    
542    checkpoint58w_post
543    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
544      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
545      (and replace horiVertRatio in NH code).
546      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
547                         and tutorial_plume_on_slope (sensitive to truncation)
548    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
549      directly to drive seaice model (C-grid only)
550    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
551     - reintroduce computation of wind from stress,
552     - compute tau (in exf_bulkformulae.F) from windstress averaged to
553       mass points to avoid tau = 0
554     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
555    o rdmnc.m: make it work with "global" files created with gluemnc
556    o rdmnc.m : some improvements in dealing with singleton dimension
557      (tested on all testreport mnc output files).
558    o genmake2: disable pkg/profiles if netcdf test fails.
559    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
560    o move call to cal_readparms up to make calendar parameters/variable available
561      to all packages
562    
563    checkpoint58v_post
564    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
565      useDynP_inEos_Zc tested.
566    o pkg/exf: changes to properly interpolate/mask/scale initial fields
567    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
568      and portions thereof.  See read_cs.txt for description and examples.
569    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
570      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
571      following the great-circle arc between those 2 points.
572    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
573      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
574    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
575     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
576     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
577     - still needs work (not working with some options ; efficiency to improve)
578       and serious testing.
579     - use this scheme for temperature & salinity in 2 advection test exp.:
580       advect_xy & advect_xz, respectively.
581    
582    checkpoint58u_post
583    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
584    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
585    o testreport: add option "-skipdir" to skip some test.
586    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
587      momentum calculation.
588    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
589    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
590      remove checkpoint.F and the_correction_step.F (no longer used);
591      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
592    o add option (linFSConserveTr) to correct for tracer source/sink due to
593      Linear Free surface
594    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
595    o pkg/thsice: fix reading mnc-pickups
596    
597    checkpoint58t_post
598    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
599    o pkg/mdsio:
600     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
601       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
602       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
603     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
604     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
605       either MDS_READ_FIELD or MDS_WRITE_FIELD )
606     - new S/R (to replace MDSWRITEMETA), which allows to write more
607       informations (variable names, time ...) to meta files.
608     - modify rdmds.m to give back the meta file content.
609    o pkg/diagnostics: change vertical interpolation to be safer, and more
610       flexible (define p-levels to interpolate to in data.diagnostics);
611      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
612       diagnostic pointer.
613    o pkg/seaice: more cleaning up of seaice_growth, added many comments
614    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
615    o fix multi-category seaice:
616     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
617       SEAICE_MULTICATEGORY
618     - fix short wave heat flux
619    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
620       and allow to use EVP solver. Change forward lab_sea: test both EVP
621       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
622    o Initial check-in of lab_sea adjoint
623      (very similar to natl_box_adjoint/code_seaice)
624      * used C-grid and EVP solver
625      * used KPP, GM/Redi
626      * uses inAdExact=.TRUE.
627      * gradient checks fail for both ADM and TLM
628        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
629        f.d. gradients actually seem more problematic than ADM, TLM gradients;
630        issue is related to forward mismatch between g77 an ifort
631    o pkg/seaice: overhaul of thermodynamics
632     - growth.F and groatb.F are replaced by new routine seaice_growth.F
633     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
634     - move a few global fields out of SEAICE.h into seaice_growth.F and
635       make them 2D (FICE/QNETO/ ...)
636     - remove FO (it is the same as QNETO)
637     - introduce a few local fields to avoid modifying external fields such
638       as atemp, etc.
639    
640    checkpoint58s_post
641    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
642      changed exf_set_gen.F so that
643        genperiod=0 means input file is one time-constant field and
644        genperiod=-12 means input file contains 12 monthly means
645    o CG2D: use pre-computed solver main-diagonal (stored in common block);
646      this affects truncation error ; generate new output file for exp. which
647      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
648        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
649        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
650        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
651        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
652        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
653    o start implementation of deep-atmosphere and anelastic formulation
654    o verification: remove 2nd copy of input files and use script "prepare_run"
655      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
656    o mom_common/vecinv/fluxform: fix a few initialisation isssues
657    o profiles: fix for multithreaded case
658    
659    o diagnostics: rename few diags:
660      s/'PRESSURE'/'RCENTER '/g
661      s/'TICE    '/'oceFreez'/g
662      s/'TAUX    '/'oceTAUX '/g
663      s/'TAUY    '/'oceTAUY '/g
664      s/'SWFLUX  '/'oceQsw  '/g
665      s/DIFx/DFxE/g
666      s/DIFy/DFyE/g
667      and add few ocean-forcing diagnostics:
668      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
669    o modifications to pkg/seaice/growth.F and budget.F, which change results of
670      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
671      as actual snow thickness.  It now refers everywhere to effective snow
672      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
673    
674    checkpoint58r_post
675    o modifications to pkg/seaice/growth.F, which change results of
676      lab_sea experiment: fixes pertain to melting snow over open water, to
677      masking EVAP under sea ice, and to using the correct AREA variable for
678      computations of EVAP, PRECIP, HSNOW, and GHEFF
679    o add ability to read bathy, salt, and theta using MNC (off by def)
680    o add flooding algorithm and advection of HSNOW for pkg/seaice;
681      both are turned off by default and do no change any results
682    o seaice advection with pkg/thsice: a step toward the use of non-linear
683      advection scheme, but #ifdef or commented out for now (requires more EXCH).
684    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
685      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
686      in natl_box (affects results @ truncation level: update output.txt)
687    o multi-threading and IO:
688      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
689      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
690        (needed to work with SingleCpuIO): tested in all verif. exp.
691    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
692      affects the results (but none of the verification test uses this scheme).
693    o Adding some pkg/diagnostics capability to pkg/seaice
694      (will certainly be subject to changes)
695    o ctrl: adding new control variables:
696      lwflux, lwdown, evap, snowprecip, apressure, runoff
697    
698    checkpoint58q_post
699    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
700      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
701      high_res_cube configuration by 4% on Columbia.
702    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
703      add (in global_with_exf/code) a version of EXF_INTERP_READ without
704      dynamical allocation (seems to work in multi-threaded).
705    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
706      single CPU io) so that TAF does not have to see EESUPPORT.h
707    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
708    
709    checkpoint58p_post
710    o obcs: stop if obcs is used with useCDscheme = .true.
711    o shelfice:
712     - fix a sign error so that no slip at shelfice interface works
713     - remove stop for combination non-hydrostatic code and shelfice. That does
714       not mean, that the results are correct, but at least they are numerically
715       stable
716    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
717    o added adjoint exch routined for all exch*3d* routines
718      and updated flow directives
719    
720    checkpoint58o_post
721    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
722      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
723    o change controling S/R for writing pickup file (new S/R do_write_pickup)
724      and clean-up reading/writing of pickup files.
725    o fix local version of read/write pickup (NH part) in rotating_tank/code
726    o simplify EXCH interface:
727     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
728     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
729    o added the regrid package
730    o shelfice:
731     - add a simple boundary layer scheme to reduce noise
732     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
733    
734    checkpoint58n_post
735    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
736       local variable (not in common block).
737    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
738      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
739      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
740        to work with SingleCpuIO.
741    o add "_d 0" to real constant of pkg/cfc subroutines ;
742       update exp. cfc_exemple & tutorial_cfc_offline output files.
743    o multi-threading and IO:
744      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
745        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
746      - barrier before and after reading.
747      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
748      - avoid using MDS_WRITELOCAL for LAND pkg output.
749      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
750        common-block variables ; Allows multi-threading with master-thread IO.
751    o change default MAX_NO_THREADS from 32 to 4 ;
752      and stop cleanly when MAX_NO_THREADS is too small.
753    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
754    
755    checkpoint58m_post
756    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
757       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
758    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
759       keep global_ocean.90x40x15 (for AD testing) with former secondary test
760       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
761    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
762        add MITgcm_tutorials (= code + all the tutorials)
763    o ecco, option to compute cost for total ssh (mean+anom)
764    o consistent with addition of ptracer and ssh in pkg/profiles
765    o profiles: adding ptracer and ssh
766    o testreport: change multi-test output-file name
767      (from output.txt.{name} to output.{name}.txt)
768    o profiles: now ok for mutli-tiles case
769    o seaice: add 4 parameters for different advection schemes for area,
770      (effective) seaice thickness, enthalphy, and snow height. Their default
771      is the standard parameter SEAICEadvScheme
772    o calc_gw:
773     - add cosFacU in zonal viscous flux (harmonic.visc.).
774     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
775       of tutorial_plume_on_slope.
776    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
777    o calc_gw: true flux-form, account for horizontal grid spacing.
778      update rotating_tank results, but not plume_on_slope (affected at
779      truncation level, 11 digits).
780    
781    checkpoint58l_post
782    o calc_gw:
783     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
784     - remove side-drag for now (need to fix it); update plume_on_slope results.
785     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
786    o commit code to make SST/SSS weights spatially variable
787      (based on either variable in-situ or variable initial T/S weights)
788    o pkg/ecco:
789      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
790        now based on horizontally varying weights wthetaLev, wsaltLev
791      * cost_averagesflags now returns year indices in addition to day, month
792      * sflux balance is performed on annual basis
793        (sflxumm, sfluxmm2, bal_sfluxmm)
794      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
795        including separate counting and multipliers
796    o pkg/rbcs
797      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
798    
799    checkpoint58k_post
800    o testreport:
801     - always build in dir. "build" (if not there, mkdir build instead of building
802       & running in input)
803     - run in dir run (if it exists), in build otherwise.
804     - call prepare_run (if input/prepare_run exists)
805     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
806    o pkg/exf modifications to interpolation and rotation routines for more
807       reasonable treatment of North Pole singularity: for tracers North Pole
808       value is set to northernmost zonal-mean value, for zonal velocity it is
809       set to zero, and for meridional velocity it is set to northernmost value.
810    o pkg/exf/exf_check_range.F
811     - add tile index to diagnostics and move stop statement to the very
812       end of the routine.
813    o pkg/diagnostics: (diagnostics_main_init.F)
814      define title of isomorphic variables according to the current config.
815    o pkg/thsice with pkg/seaice dynamics:
816    - fix domain of computation (interior only, required for exf) and do exchanges
817    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
818    o towards a standard way of dealing with multi-threading in MONITOR
819      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
820    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
821       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
822    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
823    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
824    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
825       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
826    o tracer advection:
827     - clean-up and simplify calc_common_factors.F
828     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
829       advection subroutine (but still not used within DST advection S/R)
830    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
831    
832    checkpoint58j_post
833    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
834      from file (collects calls previously in FORWARD_STEP)
835    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
836    o adjoint store dir. adjusted accordingly
837    o genmake2
838      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
839    
840    checkpoint58i_post
841    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
842      on wind stress (SEAICEstressFactor defaults to 1.)
843    o Total number of Timers is finite (<=40): comment out 2 non-essential one
844      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
845    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
846      on CS-grid: no longer loosing mass.
847    o exf & curvilinear-grid: no longer modify longitude xC & xG.
848    o pkg/ggl90: fix sloppy output and fix a bug
849    o pkg/seaice: added SEAICEuseEVPpickup parameter
850      - Set to false in order to start EVP solver with
851        non-EVP pickup files when using SEAICEuseEVP
852      - fix sign error in diffusion in seaice_calc_rhs
853    
854    checkpoint58h_post
855    * Modifications for bottom topography control
856      o replace hFacC by _hFacC at various places
857      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
858      o add non-self-adjoint cg2d_nsa
859      o update autodiff support routines
860      o re-initialise hfac after ctrl_depth_ini
861      o works for 5x5 box, doesnt work for global_ocean.90x40x15
862    * Adding verification for 5x5 box (4-layer) bottom topography control
863    
864    checkpoint58g_post
865    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
866       used for mean seasonal cycle, mean diurnal cycle); add an example
867       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
868    o pkg/ggl90:
869      - add parameter (minimum surface kinetic energy)
870      - fix bug (avoiding division by zero)
871    o couple pkg/thsice to pkg/seaice:
872      - modify advection in seaice to accomodate new scalar fields to be advected
873      - only muliDimAdection scheme work with seaice/thsice
874      - mapping of thsice-variables to seaice-variables, back and forth
875      - does not break the verification experiments, but does not give the
876        desired results either
877    o pkg/seaice
878      - make (default) second order advection a bit less confusing?
879    
880    checkpoint58f_post
881    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
882      to pkg/seaice):
883      - new routines thsice_map_exf and thsice_get_exf provide the interface
884      - add an additional formal parameter to thsice_solve4temp
885    o pkg/exf:
886      - add new fields wspeed, snowprecip (to be able to couple to thsice)
887      - correct Stefan-Boltzmann constant
888      - new parameter for longwave surface emittance
889      - separate some stuff from exf_bulkformulae into new routines  
890        exf_radiation, exf_wind
891      - add new parameters and constants: longwave emissivity for ocean, ice
892        and snow, evaporation parameters over ice
893      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
894        either wind from stress or stress from wind
895    o pkg/thSIce:
896    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
897    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
898       and THSICE_CALC_THICKN
899    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
900    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
901      to make debugging easier.
902    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
903    o pkg/bulk_force:
904      - clean-up comments and parameters ;
905      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
906    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
907      generate new output for test-experiment: aim.5l_cs.thSI
908    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
909      testreport accordingly
910    
911    checkpoint58e_post
912    o SEAICE_CGRID adjoint done
913    o R_STAR adjoint implemented.
914      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
915      * need to sort out init. of h0facc, etc.
916    o Make pkg/profile fully independent of ecco,cost, etc. stuff
917      to be able to use it in pure forward.
918    
919    checkpoint58d_post
920    o upgrade simple test-experiment to tutorial example:
921     step.1: duplicate the experiment and (step.2) will remove the old copy.
922      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
923      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
924      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
925      tutorial_global_oce_biogeo    <- copy of dic_example
926      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
927      tutorial_plume_on_slope       <- copy of plume_on_slope
928      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
929      tutorial_global_oce_optim     <- empty for now (David ?)
930      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
931     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
932    o correct a sign problem in cost_scat.F
933    o obcs and ptracers: fix boundary conditions for advections schemes
934      with larger stencil
935    o thsice adjoint: start
936    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
937      completeness
938    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
939      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
940    o ptracers adjoint:
941      * avoid extensive recomputatations
942      * fix missing re-init. of gptr (missed by TAF)
943    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
944      me to turn off the excessive output to STDOUT that this package produces
945    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
946      and add those terms in Vector-Invariant formulation.
947    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
948      if the control period (xx_hfluxperiod etc) is 0
949    o in profiles pkg, clean routines and fix details
950    o in ecco pkg, reading ssh data:
951      fix problem in case the model does not start at iter0=0
952    o fix mnc-pickup/restart for ptracers
953    o new package prifiles:
954      code to compute profile-based cost by Gael Forget
955      (modifs in ecco, ctrl, autodiff)
956    o Benign bug fix in initialization (spotted by M. Mazloff) of
957      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
958    
959    checkpoint58c_post
960    o adjoint: finish NLFS adjoint and provide reference output in
961      verification/global_ocean.90x40x15/results_ad_nlfs
962    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
963      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
964      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
965      with SEAICE_CGRID defined.
966    o move calendarDumps from "data" to "data.cal" and clean-up the code
967      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
968    o add useEXF & useCAL flags (for now, set in hard-coded way)
969    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
970      (were missing in NH mode, and wrong in quasihydrostatic mode).
971      waiting for Chris updated version of calc_gw to add those CALLs.
972    o fix bug in quasihydrostatic S/R ;
973      add a test for this option: global_ocean.90x40x15.qshyd
974    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
975      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
976    o add on/off flag useOffLine for package OFFLINE
977    o seaice:
978      - modify advection so that it works also on the C-grid
979      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
980        problem in multi-tile runs with C-grid
981      - add flags for clipping ice velocities and/or masking solver forcing
982      - fix drag (ocean on ice) formulation and a bug that caused noise in the
983        C-grid solver
984      - added a few comments to seaice_diffusion.F
985      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
986        are now exclusive)
987      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
988        required re-ordering the code a little:
989       + make DAIRN global variable (defined in SEAICE)
990       + move computation of the viscosities eta and zeta into a new separate
991         routine (because I need to recompute them in seaice_ocean_stress.F)
992    
993    checkpoint58b_post
994    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
995      update output.txt of exp. aim.5l_cs.thSI
996    o various mnc cleanups and improvements:
997      + shrink lookup tables by factor of ~4
998      + better error reporting when running out of lookup space
999      + able to handle longer path/file names (up to 500 chars)
1000    o adjoint:
1001      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1002      - TBD: "hidden" mom_vecinv recomp. in dynamics
1003    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1004     (allow to differentiate between forcing components using new integer flags:
1005      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1006     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1007    o ecco
1008      - enable trend removal from SSH anomaly obs.
1009    o adjoint
1010      - a fix for PmEpR when #undef EXACT_CONSERV
1011      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1012      - try to fix "hidden" recomp. in forward_step for NLFS
1013        (NLFS seems broken sometimes after I checked it in)
1014    o seaice:
1015     - add c-grid version of the dynamic solver:
1016       + three new routines that are the c-grid substitute lsr, dynsolver
1017         and ostres
1018       + put a few fields that were local to dynsolver into global common
1019         blocks, so that I can move the computation of stresses etc into
1020         seaice_lsr (saves coding but may break the adjoint).
1021     - replace more hardwired parameters by runtime parameters
1022     - add ice masks that mask the rhs of the implicit solvers where there
1023       is no ice (commented out in seaice_dynsolver, because i am not sure
1024       if this works properly), eventually this should replace the clipping
1025       of ice velocities in seaice_dynsolver to +/-40cm/s.
1026    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1027      include it only where its needed
1028    o move balancing of fluxes before the call of external_forcing_surf
1029    o seaice:
1030      - correct units of turning angles (now they are really in degrees)
1031      - move computation of GWATX/Y out of main routine into dynsolver
1032      - initialize GWATX/Y in seaice_init
1033    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1034      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1035    o seaice: add runtime flags for turning angles (default to zero)
1036    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1037      and trend from exf forcing and ctrl control adjustments
1038    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1039      (since checkpoint57x_post)
1040    o change the default rotation period to 86164.s = the Earth rotation
1041    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1042      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1043    o seaice advection: add code for choosing between the default (2nd order
1044      central differences) and multiDim advection schemes provided by
1045      pkg/generic_advdiff
1046    o seaice:
1047      - removed all references to SEAICE_GRID.h fields from
1048        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1049        (cubed-sphere configuration will change a little)
1050      - grid computations in seaice_init are obsolete now.
1051      - cleaned up code a little so that is easier to read (hopefully).
1052      - added new (better?) discretizations of default advection and diffusion
1053        (turn on with SEAICEuseFluxForm)
1054      - replace 1 in 3d global fields by kSurface in growth.F
1055      
1056    checkpoint58a_post
1057    o seaice:
1058      - bug fix in advect.F
1059    o shelfice:
1060      - separate shelfice load anomaly from pload (breaks with time
1061        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1062        Its default is 0., but it may be computed more cleverly from (unknown)
1063        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1064        done offline. A good approximation of the pressure load anomaly is
1065        necessary to avoid large initial adjustment processes underneath
1066        deep-reaching shelfice.
1067      - small fix in ISOMIP shelfice_thermodynamics
1068      - add more sophisticated thermodynamics of Hellmer (1989), this is
1069        now the default
1070      - give a few constants more intuitive names
1071    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1072      if bulk formulae are used in long integration (especially EmPmR). Turn
1073      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1074      if balancePrintMean, the imbalance that is substracted is printed to
1075      STDOUT.
1076    o fix bug (typo) in obcs_apply_eta.F
1077    o add a new package shelfice which enables us to model the circulation
1078      underneath shelf-ice with draughts of hundreds of meters.
1079     - works
1080     - to do: + include improved thermodynamics
1081              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1082                instead of new field kTopC
1083              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1084                instead of new field R_shelfIce and new code in ini_depth.F
1085                and ini_mask_etc.F?
1086              + adjust vertical mixing schemes?
1087    o seaice pkg:
1088     - add a cpp-flag to include a simple formula for a salinity dependent
1089       freezing point of sea water at the surface
1090     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1091       meridional stresses are now different (and hopefully correct)
1092    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1093       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1094       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1095    o pkg/diagnostics: add options and parameters for regional-statistics
1096       diagnostics ; define regions by reading a region-mask from a file
1097       (might add other options later)
1098    o pkg/bulk_force:
1099     - add option and parameters to use AIM surface-flux formulae.
1100     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1101       others forcing fields (defined in PARM05, parameter file "data") are loaded
1102       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1103     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1104     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1105     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1106       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1107     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1108    
1109    checkpoint58
1110    o add "--embed-source" option to genmake2 which, when the supporting
1111      tools can be compiled (as determined by genmake2) will turn on the
1112      embed_files package which then embeds the entire MITgcm source code
1113      (*.[fFhc] + Makefile) used for the build within the executable
1114      - requested by CNH but off by default
1115      - adds a paltry <9MB to the mitgcmuv executable in most cases
1116      - only writes the output when useEMBEDSRC in eedata is true
1117    o clean up 3-dim. relaxation codes:
1118      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1119      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1120      * Thanks to Tom Haine for testing!
1121    
1122    checkpoint57z_post
1123    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1124      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1125    o fix the pickup behavior for obcs in combination with ptracers
1126    o fix a bug in ptracers_external_fields_load
1127    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1128      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1129    o transfered surface NH pressure to eta field (if exactConserv).
1130    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1131         and update lab_sea output.txt file.
1132    o completing 3-dim. relaxation code: additional term
1133         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1134      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1135      * At compile time, in "EXF_OPTIONS.h" set
1136          #define  ALLOW_CLIMTEMP_RELAXATION
1137          #define  ALLOW_CLIMSALT_RELAXATION
1138      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1139          tauThetaClimRelax3Dim = 15552000.0,
1140          tauSaltClimRelax3Dim  = 15552000.0,
1141      * 3 cases:
1142          1) Use a constant-in-time 3-dim. field
1143          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1144          3) Real-time relax. to time-evolving prescribed field
1145    o Adding Laplacian-type smoothness constraint on
1146      initial and boundary (forcing) controls (ic, bc)
1147      * enable at compile-time via
1148        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1149      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1150      * Absolute scale somewhat unclear so far
1151      * no area weighting was included since no other cost term does so far
1152    
1153    checkpoint57y_post
1154    First step for a NLFS adjoint
1155    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1156    o new init. routines for calc_r_star, calc_surf_dr
1157    o still need to deal with ini_masks_etc
1158    o testreport seemed happy
1159    checkpoint57y_pre
1160    
1161    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1162    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1163    o add new offset feature to offline pkg (plus minor cleanup)
1164    o cfc fixes for final year of integration
1165    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1166      be in GCHEM_OPTIONS).
1167    
1168    checkpoint57x_post
1169    o fix testreport Pb in multiple test experiment.
1170    o cleanup our namelist syntax in verification:
1171      - make it more F95 standards compliant (some work still needed)
1172      - allows the vast majority of our tests to work with gfortran
1173    o Non-Hydrostatic:
1174     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1175     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1176    o Allow to apply AB on T,S rather than on AB(gT,gS):
1177     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1178     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1179       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1180     - need a "clever" read_pickup to restart from the other AB formulation
1181    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1182    o remove some unused variables (reduces number of compiler warnings)
1183    o adjoint
1184      * Disable useVariableViscosity for adjoint for time being
1185        (there are a number of extensive recomputations)
1186      * Initialize certain variables needed for adjoint
1187    
1188    checkpoint57w_post
1189    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1190                 fix the singleCpuIO RS version of MDSWRITEFIELD
1191       and add a WARNING if using globalFiles=T with multi-processors.
1192    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1193      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1194    o tracer advection scheme:
1195      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1196       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1197       was not very convenient).
1198      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1199       (further tests needed for the implicit DST & Flux-Limiter schemes).
1200    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1201      and sRef for convenience, handy, when you want to initialize
1202      ptracers in a large domain with a constant non-zero value. Also,
1203      untangle ptracers_init.F a little.
1204    
1205    checkpoint57v_post
1206    o change dome exp. to use variable viscosity in side-drag terms.
1207    o remove all the files from the cfc_offline test since they are now
1208      incorporated into tutorial_cfc_offline which has been producing
1209      identical results for a few days of testing
1210    o add new parameter: sideDragFactor to enable half-slip-side BC
1211      and change side-drag S/R to use viscosity from mom_calc_visc
1212      (can switch back by setting sideDragFactor=0.); affects results at
1213      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1214       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1215    o vorticity & strain are now computed without masking, to account for
1216      no-slip-side BC in variable viscosity calculation ; mask is applied
1217      anyway later on, before computing advection/coriolis terms.
1218    o modify exp4 to test new obcs support for reading from external files
1219      and for passive tracers
1220    o fix behavior of ptracers_monitor when monitor output is written to a
1221      netcdf-file; still not independent of monitor.F (writes in the same
1222      file).
1223    o change default value of tRef (put a uniform, meaningful value for ocean
1224      & atmos) and initialize sRef (was missing, as Martin mentioned).
1225    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1226      to be proportional to enstrophy dissipation length.  Thus,
1227       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1228      This is now consistent with Smagorinsky and with the manual.
1229    
1230    checkpoint57u_post
1231    o OBCS and PTRACERS: add open boundary support for passive tracers
1232      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1233        OB-values from file; this is not different from the way theta and salinity
1234        are treated
1235      - however, Orlanski-radiation conditions are not supported, and the model
1236        will stop if you use pTracers and Orlanski at the same time.
1237      - beefed up the rountine obcs_external_fields_load: now only those open
1238        boundary values are overwritten with values from files for which there
1239        are really files, otherwise the OB-fields remain untouched. This makes
1240        it possible to use different OBs at different ends of the domain (as
1241        with EXF)
1242    o reduce number of exch calls in shap_filt (s2).
1243    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1244      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1245    
1246    checkpoint57t_post
1247    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1248    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1249      same truncation, independent of the face number: affects affects several
1250      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1251    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1252      note that biharmonic viscosity + no-slip was not tested in any experiment.
1253    o fix bug in non-linear free-surf side-drag ; generate new output for
1254      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1255    o make mnc honor the writeBinaryPrec flag for most kinds of output
1256    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1257    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1258      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1259    o add brackets in multi-terms sum to get same truncation, independent of
1260      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1261      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1262    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1263      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1264      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1265      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1266      Suggested values of viscosity parameters found in mom_calc_visc.
1267      Many new viscosity diagnostics available.
1268    
1269    checkpoint57s_post
1270    o Add clearing-house for viscosity calculations, mom_calc_visc and
1271      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1272      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1273      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1274      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1275      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1276      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1277      ViscAhStrain and viscAhTension are now retired.
1278    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1279    o In response to JMC's bug report, genmake2 now ignores any soft-links
1280      that it finds in the *current* directory when searching for files.
1281      Soft-links found in any other source directories will still work as
1282      they did before.
1283    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1284      a C routine to unlimit the stack size
1285    o mnc-ify pkg/aim snapshot vars
1286    o mnc-ify pkg/land as requested by Daniel
1287    o various changes to mnc including:
1288      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1289      - output can now be grouped so that all files within a group
1290          change the ITER portion of their names in lock-step together
1291      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1292          and works with both EXCH1 and EXCH2 (but needs more testing)
1293      - writing works for all verification test cases w/ g77 on Linux
1294    
1295    checkpoint57r_post
1296    o make MNC variable initialization happen earlier
1297    o add diagnostics for (almost) each term of the momentum Eq.
1298    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1299    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1300    o remove MINIMAL_TAVE_OUTPUT option ;
1301      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1302    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1303      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1304    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1305    o add time-dependent SST, SSS control
1306    o cost terms in ecco/ modularized (new cost_generic.F)
1307    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1308    o new infrastructure for seaice model vs. obs misfits in seaice/
1309      * driver from the_main_loop.F is seaice_cost_driver.F
1310      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1311      * gradient check in Exp. 6a of natl_box_adjoint/
1312    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1313      (see README file)
1314    
1315    checkpoint57q_post
1316    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1317    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1318      - bug was reported by Jean-Michel and Ian Fenty
1319    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1320      update exp. cpl_aim+ocn output.
1321    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1322      Needed for high-res. runs with large global files
1323      to be able to limit tapelev size
1324    o Changed some tests for adjoint:
1325      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1326      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1327      * global_ocean.90x40x15/ back to default 3-level checkpointing
1328    o Modifications to enable scripted COMMON to MODULE conversion
1329      * verification/OpenAD/code/ has necessary scripts and description;
1330      * converts, compiles and runs successfully;
1331    
1332    checkpoint57p_post
1333    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1334    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1335      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1336    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1337    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1338      (was already the case for dissipation with mom_vecinv,
1339       and also the case for grad.PhiHyd when staggered-timeStep)
1340      This will allow to put dissipation out-off the AB time-stepping.
1341     Unfortunately, affects truncation error. Update output of exp. that "fails"
1342      (cg2d matching number) and leave the others for later: front_relax(10),
1343      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1344      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1345    
1346    checkpoint57o_post
1347    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1348      (2) its ready to be documented during the 20050801 DocFest
1349    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1350      for ideal_2D_oce and lab_sea on linux_ia32_g77
1351    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1352      in global1x1_tot/code_seaice_adj to access indices 32, 33
1353      (worth another tag)
1354    
1355    checkpoint57n_post
1356    o adding precip control xx_precip 32
1357    o adding swflux control xx_swflux 33
1358    o Replacing 10 forcing penalty cost routines by 1 generic.
1359    o Implementing partitioning in time-mean and variable adjustment
1360      for atmos. state.
1361    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1362    o in natl_box_adjoint:
1363      * updated exp 1 to 10
1364        (but does not have time-mean vs. variable split results yet)
1365    o updated global1x1/*_seaice_adj/
1366      to incorporate latest changes
1367    o enable useSingleCpuIO for mdsio vector routines
1368      (applies in particular to tapelev I/O)
1369    o removed inefficient K-loop in all active_file*control*.F
1370    
1371    checkpoint57m_post
1372    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1373      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1374    o pkg/exch2: filling of face-corner halo regions is optional
1375      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1376    
1377    checkpoint57l_post
1378     tag before updating tutorials (pre-release-2)
1379    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1380       for output and interpolation of input fields onto model grid)
1381    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1382       Affects results of exp. rotating_tank ; update output.txt.
1383    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1384          and taking the square quantity and/or using a fraction-weight field.
1385    o fix aim_diagnostics_init.F mate numbers.
1386    o add mnc output capability to diagnostics/diagstat and update
1387      our cvsignore files for the ACSII output generated
1388    
1389    checkpoint57k_post
1390    o lab_sea now uses diagnostics package and provides a suite of
1391      new EXF diagnostics output.
1392    
1393    checkpoint57j_post
1394    o exf
1395      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1396        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1397        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1398      * extended diagnostics output
1399        - now includes all EXF variables
1400        - hs, hl moved to common block
1401        - separate S/R for diagnostics, called after ctrl vector is added
1402        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1403        - EXFqnet contains true Qnet (i.e. includes qsw)
1404      * updated verif. lab_sea, global_with_exf
1405      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1406        to ensure that diagnostics sees a true EXFqnet
1407    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1408    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1409      several times with different frequencies.
1410    o mnc-ify the thsice package as requested by Daniel Enderton
1411      - the monitor--MNC output needs work
1412      - many attributes need to be added (most are currently blank)
1413    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1414      - many attributes need to be added (most are currently blank)
1415    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1416    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1417    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1418      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1419         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1420    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1421     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1422    
1423    checkpoint57i_post
1424    o Diagnostics package was changed: diagnostic allocation is now deactivated
1425      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1426    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1427      add 1rst Order upwind vertical Shear.
1428    o add a quick fix for A/B checkpointing in OFFLINE mode
1429    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1430      end-run around the C/Fortran linking horror in eesup/src/timers.F
1431    o added pkg/runclock: allows user to terminate run based on wall clock
1432    o added non-hydrostatic scaling parameter: nh_am2
1433    o pkg/my82: futile attempt to make results compiler-independent by adding
1434      some "_d 0", etc. no effect.
1435    o for mnc output, fill the 'T' coordinate var with myTime and create a
1436      separate 'iter' variable for iteration count
1437    o pkg/diagnostics:
1438      add new capability: output of Global/Regional & per-level statistics ;
1439      tested against monitor output (including land & thSIce) on various exp.
1440    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1441    
1442    checkpoint57h_done
1443      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1444      data.diagnostics, data.gchem, data.ptracers) is done.
1445    
1446    o pkg/diagnostics: prepare for Global/Regional statistics.
1447      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1448    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1449      and rename it: DIFFERENT_MULTIPLE
1450    
1451    checkpoint57h_post
1452    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1453    o pkg/diagnostics: change output frequency, now in seconds (instead
1454      of Nb of iterations). This requires to change data.diagnostics.
1455    checkpoint57h_pre
1456    
1457    o in mnc, let the user create the output dir if both mnc_outdir_date
1458      and mnc_outdir_num are false
1459    o add fflags() to pkg/diagnostics which allows one to specify, on a
1460      per-file basis, the file precision [default behavior is unchanged]
1461    o added diagnostics to pkg/kpp, including computation of mixed layer
1462      depth based on a temperature/density criterion
1463    o updated verification/natl_box to test the new pkg/kpp diagnostics
1464    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1465    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1466    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1467      not mnc -- this mistake was found by JMC and is now corrected
1468    
1469    checkpoint57g_post
1470    o add Adams-Bashforth 3rd Order time stepping:
1471      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1472      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1473    checkpoint57g_pre
1474    
1475    o make lambda[Theta,Salt]ClimRelax spatially varying
1476      (default remains spatially uniform constant based on tau)
1477    o added new control variables
1478      * init. uVel, vVel, etanN
1479      * lambda[Theta,Salt]ClimRelax
1480    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1481      (suggested by G. Forget)
1482    
1483    checkpoint57f_post
1484    o add parameter "baseTime" = model base time = time at iteration zero
1485      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1486      account for baseTime shift
1487    o move Coriolis arrays from PARAMS.h to GRID.h
1488    checkpoint57f_pre
1489    
1490    o mnc-ifying the seaice package
1491    o introduced an alternative length scale calculation for use in the limiting
1492      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1493    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1494    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1495      as well as grad(vort3).  Made it compatible with both approximate form
1496      for the cubed sphere and full form of these gradients.  Added flag
1497      useFullLeith to select between approximate and full form.  
1498    o add "d0" in getcon.F to reduce differences between compilers/platforms
1499      update output.txt of exp. fizhi-gridalt-hs
1500    o change port_rand funtion to allow to set the seed.
1501    o fix obscure MNC bug involving conversion between reals and integers
1502      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1503        new version is now more standards-compliant
1504    o adjoint-related modifications
1505      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1506      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1507      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1508    
1509    checkpoint57e_post
1510    o Adding eddy stress controls a la Ferreira et al.
1511    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1512    
1513    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1514      update output.txt of exp. fizhi-gridalt-hs
1515    o add more "Z" dimensions and associated coordinate vars to MNC
1516    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1517    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1518      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1519      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1520      months and years.  Requires pkg/cal.
1521    o diagnostics: add pickup functionality
1522      - off by default for backwards compatibility
1523      - current version only uses MDSIO -- MNC will be added
1524    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1525    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1526    
1527    checkpoint57d_post
1528    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1529    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1530      output from the diagnostics package
1531    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1532    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1533      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1534    o add coordinate variables to the MNC output from the diagnostics package
1535    o change MNC-flags default value: true when useMNC=TRUE
1536    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1537      the ability (off by default) to read the grid information using MNC
1538    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1539    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1540    o do snap-shot diagnostics at the middle of the time-interval (instead of
1541      at the end).
1542    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1543      new test for AIM with thSIce + slab-ocean
1544    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1545    o move state variable diagnostics to the beginning of the time step ;
1546      (note: still needs some work specially for snap-shot diagnostics)
1547      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1548    
1549    checkpoint57c_post
1550    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1551    o generate new output.txt files on faulks with g77 & the new -ieee option
1552    checkpoint57c_pre
1553    
1554    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1555      update output.txt of exp. global_ocean.90x40x15
1556    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1557      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1558    o add saltFlux(+File) forcing capability with periodicExternalForcing
1559    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1560    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1561    o improvements for the MNC output from DIAGNOSTICS:
1562      - correct handling of the unlimitied dimension
1563      - all dims now have associated coordinate variables
1564      - variables located at U, V, and Corner ("Z") points are now written
1565        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1566        *all* data points are output
1567    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1568    o added pkg/seaice/seaice_monitor.F
1569    o mdsio_readfield.F can now read files visible only to master MPI process.
1570    o pkg/seaice: some test code for ice-modified ocean stress
1571    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1572      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1573      spurious negative numbers for precipitation and humidity.  Will cause
1574      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1575    o pkg/ctrl/
1576      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1577        May be enabled via doPackDiag
1578      *  introduce z-scaling of
1579         + gradient (doZscalePack) and
1580         + control (doZscaleUnpack)
1581    o pkg/mdsio/
1582      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
1583      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
1584    
1585    checkpoint57b_post
1586    o simplify options in diagnostics_fill arguments (remove weird combinations)
1587    o fix MNC coordinate variables so that they now contain per-face index
1588      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
1589      general, EXCH2 grids are only aligned to a "local" coordinate system
1590    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
1591    o Implement instantaneous output within pkg diagnostics:
1592      setting a negative frequency in data.diagnostics produces
1593     "snap-shot" output (as opposed to time-average if freq > 0)
1594    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
1595      NOTE: change ptracer diagnostics name: use 2 characters to work with
1596            more than 9 tracers. Add also diagnostics of advect & diffus flux.
1597    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
1598      becomes the coordinate variable for the 'T' dimension
1599    o add CF-style coordinate variables to MNC
1600      - just a first cut:  numbers are meaningless on the cubesphere and
1601        missing along the T axis but otherwise it works!
1602    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
1603    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
1604    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
1605      this is based directly on what the model compute, so that the content of
1606      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
1607    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
1608    o clean up build options files for SunOS, in particular
1609      - remove -traditional from xmakedepend
1610      - change -xarch=v9 to -xarch=native for f77
1611      - restore use of make (not gmake)
1612      - add CC=gcc if using g77
1613    o changes per discussion of AM, JMC, & EH3 today:
1614      - move redundant "grid" variables out of "state" -- in preparation of
1615        creating proper CF-style coordinate variables and in recognition
1616        that any/all grid variables can be easily copied (eg. w/NCO) from
1617        the grid files into any of the other NetCDF files
1618      - *always* output grid variables with MDSIO (this will eventually be
1619        changed)
1620      - output MNC grid file if useMNC is true
1621    o every instance of _END_MASTER() has been found and replaced with
1622      _END_MASTER( myThid ) in order to satisfy certain picky Sun
1623      preprocessors
1624    o re-arrange diagnostics pkg initialisation:
1625     - allow each package to extend the available diagnostics list
1626     - add some checking and fix small problems (multi-threaded, ...)
1627     - new S/R diagnostics_fill (replace fill_diagnostics):
1628       look through the short list of active diag. (instead of the long list)
1629       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
1630    
1631    checkpoint57a_post
1632    o this set of changes restores TAMC compatibility
1633      tested for global_ocean.90x40x15 adjoint on trough
1634      (what a pain)
1635    
1636    checkpoint57a_pre
1637    o some modifs in tools/build_options for sunos
1638    o call ctrl_pack for ctrl at end for optimcycle=0
1639    
1640    checkpoint57
1641    o add horizontal bi-harmonic viscosity for vertical velocity
1642      - new parameter viscA4W (defaults to viscA4)
1643      - affects only non-hydrostatic code
1644      - to be done: no-slip lateral boundary conditions
1645    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
1646    o implement Implicit Vertical advection for pTracers
1647    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
1648      (implemented also for implicit vertical diffusion & advection)
1649    o OBCS: extend application of tracer open boundary conditions
1650      to a strip beyond the boundary of width Olx/Oly
1651    o add call monitor to TAF set of required calls (flow directives)
1652      and include in natl_box_adjoint
1653    o untangle a few ifdefs related to cost, ctrl, autodiff
1654      untangel a few ALLOW_ECCO_OPTIMIZATION
1655    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
1656      (theta2, salt2 in ecco_cost_weights)
1657    
1658    checkpoint56c_post
1659    o OBCS as control variables
1660      - update ctrl_ad_diff.list, obcs_ad_diff.list
1661      - remove balance of obcs controls from default
1662      - fix index bug nobcs in ctrl_init
1663      - fix dummy fields filen in ctrl_pack
1664      - add dummy weights for obcs
1665    o lsopt: comment out fort.94 output
1666    o optim:
1667      - remove unnecessary header files
1668      - adjusted namelists
1669      - add xerbla.F to Makefile
1670    o exf:
1671      - multiple modifications of exf_check_range
1672      - unit change in exf_init_runoff from [m/year] to [m/s]
1673    o mdsio:
1674      - i/o-vector change debugLevel from debLevA to debLevB
1675    
1676    checkpoint56b_post
1677    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
1678      is called from DO_THE_MODEL_IO
1679      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
1680      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
1681      - clean up PTRACERS_WRITE_TIMEAVE a little
1682    o add another verification experiment that tests both the cfc-pkg and
1683      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
1684      reactive tendencies treated inline with regular timestepping
1685    o testreport previously did a lousy job of comparing small numbers, so
1686      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
1687      implemented in the little c-progam tmp_cmpnum.c which is embedded in
1688      testreport.
1689    o ptracers_monitor: bug fix for MPI
1690    
1691    checkpoint56a_post
1692    o GCHEM: finish reorganizating the package
1693      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
1694        (introduces another 3D-array for each passive tracer, but only if
1695        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
1696        gchemTendency is not needed because the timestep is done separately)
1697      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
1698      - GCHEM is now---more or less cleanly---separate from PTRACERS
1699      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
1700        so clear to me how that should be done in a general way.
1701    o CFC: improve formatting of output in CFC_ATMOS
1702    o PTRACERS:
1703      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
1704        that ALL experiments with ptracers enable can be checked. This makes
1705        GCHEM_MONITOR obsolete.
1706      - include a runtime parameter PTRACERS_monitorFreq that defaults to
1707        monitorFreq
1708      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
1709    o add PTRACERS (PTR0[1-5]) to testreport output
1710    o exf_check_range:
1711      * default changed to .TRUE.
1712      * will check values for niter0 if debLevA, every timestep if debLevB
1713      * STOP in exf_check_range if 'out of range'
1714      * range chosen generous to allow for potential extema
1715      TBD: a version with stricter range
1716           permitted range would be runtime parameters
1717    o GMredi:
1718      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
1719      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
1720      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
1721    o GCHEM:
1722      - move call to GCHEM_FORCING_SEP, so that it is now called before
1723        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
1724      - introduced a useGCHEM runtime flag and applied it everywhere.
1725      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
1726        this flag is now only visible within GCHEM-pkg routines.
1727      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
1728        be replaced by a 3D array that is computed before thermodynamics; for
1729        this, the tracer ID iTracer had to be included into the parameter list
1730        of ptracers_forcing
1731      - set up forward_step to call gchem_forcing, that will replace
1732        gchem_forcing_int in ptracers_forcing
1733      - cleaning up
1734    o small cleaning of exch2: remove files that are also in eesupp/src
1735    
1736    checkpoint56
1737    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
1738    o mnc: cleanup "full" files--fixes out-of-memory problem
1739    o ECCO-GODAE
1740      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
1741      * fully merged and updated from SIO code
1742        windstress sign change affects
1743        - exf_inscal_[u/v]stress
1744        - sign of xx_tau[u/v] adjustments
1745        - signs in cost_scat
1746      * ctrl_get_gen: avoid update of tau[u/v] for first few days
1747      * natl_box_adjoint updated and compressed
1748      * 2-level checkpoint switch added
1749        (tested in EXP. 1 of natl_box_adjoint)
1750      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
1751    o SVD
1752      * first complete, non-hacked version for SVD calculations
1753      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
1754        performed via direct access files admtlm_vector.it????
1755        (via ctrl_[un]pack)
1756      * optimcycle is used for ARPACK iteration counter
1757        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
1758      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
1759        and add linear transforms where necessary
1760      * controls are initial/final SST, SSS (can be extended; need to check
1761        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
1762    o mdsio: filename info to both stderr, stdout
1763    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
1764      from sign change
1765    
1766    checkpoint55j_post
1767    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
1768      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1769    o add consistent build directories and .cvsignore files to verification
1770    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
1771    o make all subroutines 30 or less characters in length for certain older
1772      compilers to work (a thorough search only turns up two routines in
1773      pkg/ptracers)
1774    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
1775      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
1776    
1777    checkpoint55i_post
1778    o change arrays for total vertical diffusivity (2.D if explicit,
1779      3.D if implicit) ; each ptracer uses its own background value.
1780    o added mnc/NetCDF output capability to ocn_compon_interf
1781      - added bits to verification/cpl_aim+ocn so that it can run on
1782        ITRDA and other clusters without the mpirun "-wd" option
1783    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
1784      configuration
1785    o give MNC the ability to create additional files rather than
1786      exceeding a specified file size limit "MNC_MAX_FILESIZE"
1787      - the default is just less than 2GB which is a practical limit
1788        on many systems
1789    o Compute the non-local term using either KPP vertical diffusivity (=default)
1790       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
1791    
1792    checkpoint55h_post
1793    o add verification test "vermix"
1794    o remove all the *_ioinc flags and replace with the single global
1795      outputTypesInclusive flag
1796    o allow to set a vertical profile of vertical diffusivity for T & S
1797    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
1798    o useMNC moved from data.mnc to data.pkg
1799    
1800    checkpoint55g_post
1801    o Renaming carbon AD experiments to comply with testreport conventions
1802    o Updating adjoint of Held-Suarez hs94.1x64x5
1803    o Fixing directives for non-ECCO forward_step, after ECCO directives
1804      have been fixed to avoid recomp. of do_oceanic_phys
1805      Works well for global_ocean.90x40x15,
1806      but recomp. issue remains for carbon
1807    o Updating adjoint output for natl_box_adjoint after
1808      pkg/ecco has been modified (see taga c55d_post)
1809    
1810    checkpoint55f_post
1811    o rename to timeave_init_fixed
1812    
1813    checkpoint55e_post
1814    o some delicate re-shuffle of store directives to avoid one
1815      extra call of do_oceanic_physics
1816      affects ecco_the_main_loop.F, do_oceanic_physics.F
1817      checkpoint_lev1_directives.h
1818    o NB: this may break global_ocean adjoint temporarily,
1819      but it is clear how to fix it. Will do later, need this now.
1820    
1821    checkpoint55d_post
1822    o ECCO specific cost function terms (up-to-date with 1x1 runs)
1823    o ecco_cost_weights is modified to 1x1 runs
1824    o modifs to allow observations to be read in as
1825      single file or yearly files
1826    o enable to read exf forcing fields as either
1827      single file or yearly files (flag useExfYearlyFields)
1828    checkpoint55d_pre
1829    
1830    o switch between 2-level and 3-level checkpointing
1831    o add ability of MNC to write local and "partial" (eg. 2D slices where
1832      the full 3D field is never actually stored) arrays to NetCDF files
1833      with the correct (that is, the complete multi-dimensional) set of
1834      array indicies
1835      - used in mom_vecinv() to write the diagFreq output
1836      - tested (demonstrated) in verification/aim.5l_cs
1837    o further mnc-ification
1838      - add verification/lab_sea to the list with mnc setups
1839      - fix undefined mnc v-names in cd_code
1840      - add kpp to mnc output (both snapshot and timeave)
1841    o non-hydrostatic code
1842      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
1843        in calc_gw.F
1844      - defaults to viscAh
1845      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
1846        friction or Leith) in non-hydrostatic mode, as long as there is
1847        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
1848    o pkg/cost
1849      extend simple cost functions to treat time mean quantities
1850      (T,U,V) via cost_accumulate_state from cost_tile
1851    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
1852        be 2 times larger than the minimum size the advection scheme requires.
1853        now get a perfect conservation of salt in advect_cs test-exp (updated)
1854    o GGL90 (Gaspar's TKE mixed layer)
1855      - add horizontal diffusion of TKE, requires exchanges in
1856        do_fields_blocking_exchanges, horizontal diffusivity is zero by
1857        default. In OPA there is no horizontal diffusion of TKE but the
1858        mixing coefficients are computed from a horizontal average of TKE of
1859        6 points or so. I think that diffusion has a little more physical
1860        justification.
1861      - clean up ggl90_calc in the hope of reducing memory usage (this hope
1862        was in vain)
1863      - mask tke-variable in ggl90_init
1864    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
1865    o fix biharmonic diffusion on CS-grid.
1866    o more obcs stuff
1867      - added obcs_external_fields_load as an alternative to the EXF-pkg option
1868        for reading boundary values. This routine is called from
1869        obcs_prescribe_read
1870      - updated obcs_check
1871      - changed sponge layer relaxation parameter units for days to seconds
1872      - turned off sponge layer by default
1873      - changed argument list of OBCS_CALC to myTime+deltaTclock
1874      - fixed about 35 bugs in obcs_external_fields_load
1875    
1876    checkpoint55c_post
1877    o obcs stuff
1878      - new runtime flags useOBCSprescribe, useOBCSbalance
1879      - re-arranged obcs_calc
1880      - moved exf_getobcs to obcs_prescibe_read
1881        obcs_prescibe_read is called after ORLANSKI stuff
1882        and independent of it (executable can contain all).
1883      - updated obcs_check
1884      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
1885        These may be necessary only if tangential velocities are
1886        prescribed at OB, not sure, needs testing.
1887    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
1888      which simplifies the calls and passes the ifc check-bounds test
1889    
1890    checkpoint55b_post
1891    o add a 2D scalar, Z location, exchange_2 routine.
1892    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
1893      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
1894      affects advect_cs results (for the wrong reason): update output.txt
1895    o use a more standard discretization for biharmonic viscosity ;
1896     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
1897      affects results of dome set-up: update output.txt
1898    o fix gad_advection.F (CubedSphere part), back to version 1.23
1899    o fix bug in mom_vi_del2uv.F (CubedSphere part).
1900    
1901    checkpoint55a_post
1902    o merged code to
1903      * prescribe/read time-dependent open boundaries
1904        (works in conjunction with exf, cal)
1905      * sponge layer code for open boundaries
1906      * each boundary N/S/E/W now has its own CPP option
1907        (healthy for the adjoint)
1908    
1909    checkpoint55
1910    o up-to-date adjoint of previous breaks
1911      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
1912      - global_ocean_ebm: adjoint still needs fix (TLM ok)
1913      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
1914      - carbon: * remove tr1-related adjoint verification
1915                * add ptracer as control variable
1916    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
1917      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
1918    
1919    checkpoint54f_post
1920    o in verification/carbin/ remove experiment related to
1921      ALLOW_PASSIVE_TRACER (array tr1 etc)
1922      code_ad/ input_ad/ results_ad
1923    
1924    o add two new packages
1925      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
1926        + subject to optimization (memory)
1927      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
1928        + subject to reordering (many GOTOs in the original code)
1929        + so far opps is called for every (i,j) point, and then operates in
1930          the vertical; one may want to reorder the scheme in order operate in
1931          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
1932          fields)
1933    o overhaul of IO so that we now have flags for MDSIO and/or MNC
1934      - all verification tests compile and run with linux_ia32_g77
1935      - defaults are compatible with current input files--nothing
1936        should change if you were not previously using MNC
1937      - MNC output has been added in numerous places (eg. timeave)
1938        but there are still a few writes not yet do-able with MNC
1939        (this is in progress)
1940      - flags now allow for either/or/both use of MDSIO and MNC and
1941        documentation will soon follow
1942      - numerous small formatting cleanups for ProTeX
1943    o add version info (via BUILD_INFO.h) to MNC and stdout
1944    
1945    checkpoint54e_post
1946    o add two new packages
1947      - pp81 (Packanowski and Philander, 1981), Richardson number and
1948        stratification dependent mixing
1949      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
1950      - these scheme operate in a similar manner as KPP (without ghat, of
1951        course), however there is only one diffusivity that is used for both
1952        temperature and salinity (and passive tracers)ç
1953    o add offline package
1954    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
1955      provided by Stephanie Dutkiewicz
1956    o genmake2: add ability to search for C compilers and cleanup test output
1957      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
1958    
1959    checkpoint54d_post
1960    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
1961    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
1962      leading to additional shift by 5 days each year of integration
1963       (i.e. leading to considerable offset over the years)
1964    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
1965    o start with no AB and no initial filtering (staggerTimeStep):
1966      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
1967    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
1968      (external loading & cpl import/export stay in forward_step.F)
1969    o update coupling interface to work with new staggerTimeStep
1970    o change MDSIO ptracers_pickup.
1971    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
1972    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
1973    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
1974    
1975    checkpoint54c_post
1976    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
1977      this affects (truncation error) output.txt of test-exp:
1978       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
1979    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
1980    o change Qnet to always be the net heat flux, (+upward).
1981      affects (truncation error) output of natl_box exp.: updated
1982    o define the max number of passive tracers in PTRACERS_SIZE.h
1983    o start to test mnc routinely in exp0
1984    o add sea-ice loading (sIceLoad) as a new forcing field.
1985    
1986    checkpoint54b_post
1987    o add testreport "-j JOBS" option for parallel builds (tested and pretty
1988       impressive on Altix and Opteron systems)
1989    o diagnostics can now write NetCDF files through the mnc package
1990    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
1991    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
1992    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
1993      affects (truncation error) output of lab_sea & natl_box exp.: updated
1994    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
1995    
1996    checkpoint54a_post
1997    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
1998    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
1999    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2000    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2001      + internal_wave (shift in writing cg2d_ini_res)
2002    checkpoint54a_pre
2003    
2004    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2005      - modified verification/lab_sea and natl_box_adjoint accordingly
2006    
2007    checkpoint54
2008    checkpoint53g_post
2009    o prepare splitting of thermodynamics: store convect.counter in common block
2010    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2011      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2012    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2013    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2014    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2015    o restore adjointability
2016    
2017    checkpoint53f_post
2018    o modifications that affect AIM experiment results (update output.txt):
2019      - no advection of S at top interface Nr (pkg/generic_advdiff)
2020      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2021    o AIM pkg:
2022      - include stability function into surf.Flux derivative relative to Tsurf
2023      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2024    
2025    checkpoint53e_post
2026    o merged cylindrical coord configuration
2027    o added rotating_tank experiment
2028    checkpoint53e_pre
2029    
2030    checkpoint53d_post
2031    o faulks upgraded: re-generate output.txt that have changed:
2032       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2033    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2034    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2035    o added Sadourny discretization of Coriolis
2036      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2037      - re-enabled use of omega3 (useAbsVorticity)
2038    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2039      vector-invariant equations
2040      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2041    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2042      hopefully without new bugs
2043      - still to do: biharmonic friction for non-hydrostatic w
2044    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2045    o regenerated output for global_ocean_ebm (using -ieee)
2046    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2047      of mom_common/
2048      - simple re-arrangement of instructions within computing loop
2049    checkpoint53d_pre
2050    
2051    checkpoint53c_post
2052    o new version of coupler for AIM+thSIce and Ocean models
2053     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2054     - land: change Evaporation of snow
2055     - aim with thSIce: fix bug in snow-precip.
2056    o changes to calc_gw.F
2057     - bug fix for w^2 term near the bottom boundary
2058     - (hopefully) improve the lateral slip boundary condtions for use with
2059        partial/looped cells
2060      - because the bug fix changes two verification experiments anyway (exp5
2061        and plume on slope), change the lateral boundary condition from half slip
2062        to the value of no_slip_sides
2063    o ebm package wasnt quite up to the parallel task. Fixed that.
2064    o Adjoint of EBM package + verification
2065      * TLM OK
2066      * ADM not sufficient accuracy yet (needs further testing)
2067    
2068    checkpoint53b_post
2069    o Commiting new energy balance model to repository
2070      * package is pkg/ebm
2071      * verif. is verification/global_ocean_ebm
2072      * references are in ebm_driver.F
2073    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2074    C        Global thermohaline circulation. Part I:
2075    C        Sensitivity to atmospheric moisture transport.
2076    C        J. Climate 12(1), 71-82
2077    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2078    C        Global thermohaline circulation. Part II:
2079    C        Sensitivity with interactive transport.
2080    C        J. Climate 12(1), 83-91
2081    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2082    C        Destabilization of the thermohaline circulation
2083    C        by atmospheric eddy transports.
2084    C        J. Climate 7(12), 1870-1882
2085    o Will need long integration testing.
2086    checkpoint53b_pre
2087    
2088    o created pkg/mom_common in preparation for variable viscosity code
2089    o renamed and split ini_mnc_io
2090    o pkg/land: only liquid water can diffuse or run-off
2091    o AIM using land: soil wetness availability account for snow
2092    o added printMapIncludesZeros to EEPARMS namelist
2093    
2094    checkpoint53a_post
2095    o restore TAMC compatiility for exf_constants.h
2096      (no usage of _d in .h)
2097    o Additional storing in KPP in an attempt to fix
2098      TAMC problem with adjoint of KPP code.
2099      (no success...)
2100      Identical code works fine with TAF.
2101    o Fixed verification/natl_box_adjoint experiments.
2102      Initial conditions for Experiments 4 and 5 are now
2103      set to "SEAICE_initialHEFF=0", which is more reasonable,
2104      and hence gives results closer to that of Experiment 2.
2105      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2106    
2107    checkpoint53
2108    o stable checkpoint with up to date adjoint
2109      TLM tests only run for 1st grdchk at the moment. Its unclear if
2110      this is a code problem or a problem with resetting code for g_
2111      variables that is being autogenerated wrong.
2112      Otherwise:
2113       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2114       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2115         are both still in chaos following their security messes.
2116    
2117    checkpoint52n_post
2118    o various build (mostly genmake2) changes including:
2119      - ability to build/run more easily within Cygwin and MacOS X
2120      - more complicated Makefiles with a stronger dependence on Gnu Make
2121    o pkg/seaice modifications
2122      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2123        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2124        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2125      - changed proxy for geostrophic velocity and updated
2126        verification/lab_sea/results/* accordingly
2127      - removed ADI dynamic solver from pkg/seaice
2128      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2129        they caused a segmentation fault under certain circumstances
2130      - removed unused field WATR
2131    o bug fix in exf-package:
2132      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2133         now reflect that.
2134    o small fixes in the cal-package:
2135      - set reference date to first of January for the 'model'-calendar
2136      - failing of cal_CheckDate in cal_FullDate now actually results in a
2137        warning
2138    o small modifications in exf-package to increase flexibility:
2139      - change climtempfreeze from a constant to a runtime parameter that
2140        is specified in data.exf_clim (default = -1.9)
2141      - introduce runtime parameter windstressmax (default = 2.0) that is
2142        specified in data.exf
2143    o fix in pkg/thsice:
2144      - update Evap (Tsf changes) to be consistent with Latent heat flux
2145      - maintain snow precipitation unchanged (even if Tsf >=0).
2146     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2147    
2148    checkpoint52m_post
2149    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2150      this does not change any of the results, because myIter=0 in swfrac always
2151      lead to jwtype=2 (the default anyway), but the call makes little sense
2152      as a default
2153    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2154    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2155      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2156    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2157    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2158    o extending useSingleCpuIO option to work with new exch2 I/O format
2159      - old-style, missing-tile I/O is still accessible by defining CPP
2160        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2161    o monitor package can write to NetCDF files and/or STDOUT
2162    o fix re-definition bug in MNC_GRID_INIT_ALL()
2163    o doc/api_reference added
2164      - a framework for building an API Reference Manual using all
2165        the "protex" comments embedded in the code
2166      - see pkg/generic_advdiff, pkg/mnc for examples
2167    o MNC:
2168      - make myThid the last argument for all subroutines
2169      - new default for the grid files: NO halos
2170      - add useMNC and other run-time flags
2171      - separate per-file-group handling of the unlimited dimension
2172      - early initialization of MNC w/ flags read at the eeboot stage
2173        and lookup tables set in initialize_fixed
2174      - write all MNC output to a freshly-created directory
2175    o thermodynamics sea-ice (thsice) is now tested with testreport.
2176    o test exp. advect_cs: use the standard cs32 grid ; update output.
2177    o Added functionality to grdchk:
2178      pick global i,j,k position (or nearest wet) where to perform check.
2179    
2180    checkpoint52l_post
2181    o new land formulation:
2182      a) use ground enthalpy as prognostic variable to ensure exact
2183         energy conservation.
2184      b) account for water temperature and for latent heat of freezing
2185         in all processes (rain, run-off, ground storage)
2186      c) compute surface and ground temperature implicitly.
2187    o aim_v23 modification for new land model:
2188      a) Treat separately land / ocean / sea-ice surface fluxes
2189         to allow implicit computation of land & sea-ice surface temp.
2190      b) add snow precipitation.
2191    checkpoint52l_pre
2192    
2193    o fix problem (when 1 tile is empty) in min/max monitor.
2194    o fix bug in timeAve (u,vZetatave in common block)
2195    o no restoring terms under ice for pkg/seaice
2196    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2197    o bug fix for pkg/seaice pickups
2198    o change MNC call locations and add coordinate attributes
2199    o mask vorticity at the corner ; affects global_ocean.cs output
2200    o fix ini_curvilinear_grid ; test CS experiments with mpi
2201    o aim.5l_cs: modify sea-ice fraction input file ; update output
2202    o exf: Adding simple range check routine for exf fields after read
2203    
2204    checkpoint52k_post
2205    o removed top-level directory "diags"
2206      - we migrated these functions to pkg/timeave a long time ago
2207    o fixed bug introduced in pkg/monitor
2208    o accuracy ctrlprec = 32 insuffient for gradient checks using
2209      averaged fields (I/O via cost_averages)
2210      -> use ctrl.h in active_file*.F to control I/O precision.
2211    o paramter list of CALL ADTHE_MAIN_LOOP
2212    o added initial do_the_model_io to ecco
2213    o set all ...Freq to zero after cost_final
2214      taveFreq, dumpFreq, pChkptFreq
2215    o MAIN and ECCO differentiability restored
2216    
2217    checkpoint52j_post
2218    o fix nchklev in tamc.h for global_ocean...
2219    o Bringing flow and store directives up-to-date
2220    o Really weird thing!
2221      call do_the_model_io from the_main_loop with parameters
2222      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2223      TAF places a faulty re-call of initialise_varia
2224      after cost_final call which should not be there!
2225    checkpoint52j_pre
2226    
2227    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2228      error messages
2229    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2230    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2231      debug output
2232    o modfied mdsio_writefield.F to handle non-global files under exch2
2233    o update AIM Cubed-Sphere exp (aim.5l_cs):
2234      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2235    o update AIM Equatorial Channel exp:
2236      use standard aim_v23 pkg and change the SST fields to be more realistic.
2237    o globalFile now works with exch2
2238    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2239      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2240    o limit timeave output for hi-res integrations
2241    
2242    checkpoint52i_post
2243    o removed CPP_EEOPTIONS.h from verification/*/code
2244    o updated the tiling for global_ocean_pressure
2245    checkpoint52i_pre
2246    
2247    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2248      the old pkg/aim).
2249    
2250    checkpoint52h_pre
2251    o shortened offending lines in exch2_send_rx?.template
2252    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2253    o genmake2: add build & execute test for NetCDF code
2254    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2255      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2256    o added useSingleCPUIO flag to monitor.F and mon_out.F
2257    o added temporary hack for sea-ice dynamics on the cube:
2258      metric terms are ignored and it is assumed that
2259      there is no sea-ice on cube faces 1, 2, 4, and 5.
2260    
2261    checkpoint52f_post
2262    o added exch2 cube routines to pkg/exch2
2263    o modified hs94.cs-32x32x5 to use it
2264    o added new grid files to hs94.cs-32x32x5
2265    checkpoint52f_pre
2266    
2267    checkpoint52e_post
2268    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2269      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2270    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2271      to work with implicit vertical advection and AB ;
2272    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2273    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2274     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2275    checkpoint52e_pre
2276    
2277    o fix bug in impldiff when Nr=1 or Nr=2.
2278    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2279    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2280    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2281      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2282    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2283    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2284    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2285    
2286    checkpoint52d_post
2287    o re-tiled many expts to allow comparison in multi-processor mode
2288      - updated output accordingly
2289      - changed hs94.128x64x5 to use intial T from file rather than use the
2290        random number generator
2291    o add infrastructure in model routines for fizhi and gridalt packages
2292    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2293    o changes to permit hi-res, cubed-sphere, configuration
2294      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2295      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2296      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2297        of surface winds for the cube
2298      (A verification experiment, based on global_ocean.cs32x15, but with
2299       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2300       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2301       complete with example surface forcing files and matlab scripts to look
2302       at the output and compare it with that of global_ocean.cs32x15.)
2303    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2304       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2305       to conform to the common rule.
2306    o check-in the first version of the coupler + interfaces for multi-components
2307       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2308       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2309       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2310       - ocean and atmos. share the same horizontal grid (no interpolation).
2311       - exchanges between component and coupler is done in forward_step
2312    o new verification experiment, cpl_aim+ocn:
2313       coupled ocean - AIM atmosphere on cs32 grid.
2314    
2315    checkpoint52d_pre
2316    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2317    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2318    
2319    checkpoint52c_post
2320    o Fixing OPTIONS files for use of exf:
2321      - ALLOW_ECCO not needed
2322      - ECCO_CPPOPTIONS.h should not be included from
2323        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2324        as has been the case in the past
2325      - All cal/exf related options are currently set in
2326        single header file. Should remain so until we
2327        agree on a consistent new policy.
2328    o Removed all CPP options for cal package.
2329      cal has no more CPP options.
2330    o modified STOREs in GAD_ADVECTION
2331    o corrected key comp. for passkey
2332    
2333    checkpoint52b_post
2334    o new version: "thsice" of thermodynamic sea-ice pkg:
2335     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2336     - modify fluxes but do not change theta directly;
2337     - light cleaning of bulk_force pkg (still needed with thsice).
2338     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2339       + output_thsice.txt to test thsice & bulk_force pkgs.
2340    o put back grid & coriolis monitor output.
2341    checkpoint52b_pre
2342    
2343    o call "do_the_model_io" at the beginning (=> dump initial state)
2344    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2345    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2346      (need info on NUMBER_OF_PTRACERS)
2347    o missing PTRACERS headers in some routines
2348    o default tamc.h in pkg/autodiff supposed to crash
2349      to ensure proper customization
2350    
2351    checkpoint52a_post
2352    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2353      - moved surfaceTendencyTice from pkg/seaice to main code
2354      - subroutine FREEZE_SURFACE now limits only surface temperature
2355        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2356        => new output.txt for global_ocean.cs32x15 & global_with_exf
2357      - keep the old version of FREEZE for backward compatibility;
2358        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2359      - corresponding modifs for TAF directives
2360    o added surface flux output variables to TIMEAVE_STATVARS
2361    o time-averaged output for pkg/ptracers
2362    o fix problem with ECCO-related divided adjoint
2363      snapshot file was missing some ad-variables,
2364      but no warning issued by TAF
2365    
2366    checkpoint52a_pre
2367    o some bug fixes for #undef REAL4_IS_SLOW
2368    
2369    checkpoint52 = ecco_c52_e35
2370    o after testing adjoints of checkpoint51u_post
2371    
2372    checkpoint51u_post
2373    o this is the post-merge tag of the ecco-branch
2374      (needs another clean checkout and re-testing)
2375    o various natl_box_adjoint configs and results
2376      but no input fields
2377    o obcs adjoint not yet merged!
2378    o adding ECCO global 1x1 and 2x2 degree configs
2379    o updated/extended some store directives for seaice
2380    o pkg/ecco now containes ecco-specific part of cost function
2381    o top level routines the_main_loop, forward_step
2382      supersede those in model/src/
2383      previous input data.cost now in data.ecco
2384      (new namelist ecco_cost_nml)
2385    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2386    
2387    checkpoint51t_post
2388    o this is the pre-merge tag of the ecco-branch
2389    
2390    checkpoint51s_post
2391    o cleanup: removed various obsolete #define-s
2392    o pkg/grdchk
2393      - renamed 'ph-grd 3' to 'grad-res'
2394      - merged from ecco-branch
2395        (remaining bug fixes for obcs gradient checks)
2396      - additional high-precision output for testreport
2397        (grep for 'precision_grdchk_result')
2398    
2399    checkpoint51r_post
2400    o cleaned up or removed CPP_OPTIONS.h files
2401    o updated results for some of the tests to reflect the new
2402      optfiles (-ieee: -O0 instead of -O3)
2403    
2404    checkpoint51q_post
2405    o cd_code:
2406      - moved cd_scheme.F -> cd_code_scheme.F
2407      - separate read_checkpoint from cd_code_ini_vars.F
2408      - separated cd_code part from write_checkpoint
2409      - updated AD_SOURCE, generated .flow
2410      - added CD_CODE_VARS.h to the_main_loop
2411      - Moving cd_code specific store dir.s to pkg/cd_code
2412    o ctrl package totally restructured
2413      - pack/unpack now optional and decoupled from
2414        xx_/adxx_ I/O
2415      - ctrl_pack/unpack cleaned
2416        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2417      - confined inclusion of AD_CONFIG.h to where necessary.
2418    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2419    
2420    checkpoint51p_post
2421    o create initial cd_code package
2422      - WARNING: the initialization of fields within packages
2423        is broken because INI_FIELDS (where READ_CHECKPOINT is
2424        called) is called *before* PACKAGES_INIT_VARIABLES.
2425        This seems to be backwards since
2426        1) its important to initially zero the entire field including
2427           the "halo" region
2428        2) zeroing needs to be done *before* reading pickup info
2429           and the pickup call might or might not happen in any
2430           particular run
2431      - this needs an overhaul for R2
2432    o cleanup verification/*/code/GMREDI_OPTIONS.h
2433    o cleanup testreport
2434    
2435    checkpoint51o_post
2436    o bringing AD-related verif's up to date with genmake2
2437      - carbon/
2438      - global_ocean.90x40x15/
2439      - hs.94.1x64x5/
2440      - (front_relax/ )
2441    o (more) consistent directory structure for AD-related verif.'s
2442    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2443    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2444    o bug fix in find_alpha.F for MDJWF:
2445      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2446        change rho -> rho-rhoConst
2447      - replace call find_rho to find_rhonum
2448    o initialisation of rFlx extended to full array (required by TAF)
2449      and shifted to thermodynamics
2450    o removed PTRACERS.h in ptracers routine
2451    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2452    o Correcting initialisations for fVerU, fVerV.
2453    o helping TAF to recognize dependency on kUp for
2454      fVerU, fVerV
2455    o Replacing delZ by delR in pkg/ctrl/
2456    checkpoint51o_pre
2457    
2458    o undid all of cp51 pending some cleanups and discussion
2459    o added the [#include "AD_CONFIG.h"] statement to all files that need
2460       it for adjoint/tl #defines
2461     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2462     o removed tools/genmake since it no longer works
2463    
2464    checkpoint51n_post
2465    o modifications to make FREEZE flux visible to pkg/kpp
2466      - moved surfaceTendencyTice from pkg/seaice to main code
2467      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2468      - subroutine FREEZE now limits only surface temperature
2469        (this means new output.txt for global_ocean.90x40x15,
2470         global_ocean.cs32x15, and global_with_exf)
2471    o added surface flux output variables to TIMEAVE_STATVARS
2472    
2473    checkpoint51n_pre
2474  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F  o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2475  o added [#include "AD_CONFIG.h"] to all files that use the following  o added [#include "AD_CONFIG.h"] to all files that use the following
2476    defines:    defines:

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