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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.960 by gforget, Fri Feb 22 21:17:40 2008 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  o adding precip control xx_precip  o pkg/profiles:
8  o moved ptracer ctrl index 17 -> 32    rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
9      (for "less than 32 characters name" compiler requirement)
10    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
11      conditions that have a different sampling frequency than S/T/U/V obcs
12    o pkg/diagnostics (stats-diags):
13      - fix global Min/Max in case 1 processor get only empty tiles
14    o genmake2: replace (4 times)
15         make genmake_tc_1.o >> genmake_warnings 2>&1
16      with
17         COMM="$CC $CFLAGS -c genmake_tc_1.c"
18         echo $COMM >> genmake_warnings
19         $COMM >> genmake_warnings 2>&1
20      to make genmake2 always see the value of CC as specified in the optfile.
21    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
22      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
23      - modify verification advect_cs test to test SOM-advection on CS-grid.
24    o pkg/ctrl:
25      - Rewrite of ctrl_map_ini_ecco.F,
26        introducing a generic routine (ctrl_map_ini_gen.F).
27      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
28    
29    checkpoint59n
30    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
31      number in dedicate array "hdiag":
32      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
33        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
34      - many small changes (integer format) for large number of diagnostics
35      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
36        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
37    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
38      usingSphericalGrid, this allows to define the rotated grid coordinates
39      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
40      geographical coordinates according to the inverse of the rotation defined
41      by the Euler angles, so that Coriolis parameter and online-interpolation by
42      exf works with the geographical coordinates on XC/YC/XG/YG.
43      Naturally, this feature does not work with all packages, so some
44      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
45      profiles), because there the coordinates are assumed to be regular
46      spherical grid coordinates.
47    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
48      - introduce isopycnal diffusion coefficient control.
49    o tools/adjoint_options:
50      - additional control vector components.
51    o pkg/mnc: have mnc create marginally meaning full coordinate variables
52      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
53    o pkg/mypackage:
54      - add example of read/write pickup for state-var ;
55      - add entry points to the main code for state-vars diags & write-pickup.
56    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
57      transitions for useExfYearlyFields
58      - add new subroutine that determines the file to read from for
59        use*YearlyFields = .TRUE. and .FALSE.
60      - add a verification experiment to global_with_exf that tests
61        useExfYearlyFields with USE_EXF_INTERPOLATION defined
62    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
63      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
64      subroutines (which could be generated from a template, because they are
65      almost identical), for now they are included in obcs_prescribe_read.F for
66      simplicity
67    o pkg/exf:
68      - add a little more diagnostic to exf_interp_read (in analogy to
69        mds_read_field, can be turned off with debugLevel < debugLevA=1)
70      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
71        ugly but fast by unrolling short inner loops, inserting a unroll=8
72        directive in routine lagran, and splitting a loop and making do while the
73        outermost loop (the latter requires the intoduction of index arrays)
74    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
75    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
76      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
77    o verification/seaice_obcs: updated for restart test and latest options
78    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
79      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
80      for now this is only available for the C-grid code and also within
81      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
82    
83    checkpoint59m
84    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
85      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
86    o gad_som : fix flux output (& diagnostics) to have same units as other  
87      advection scheme fluxes (was previously multiplied by deltaT).  
88    o added verification/seaice_obcs both to test seaice open boundaries
89      and to provide an example matlab scrpt for generating them
90    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
91    o pkg/salt_plume: clean up salt_plume_frac.F to
92      remove redundancy in PlumeMethod 1 and 4
93    o pkg/kpp: added saltplume diagnostics
94    o pkg/obcs and pkg/seaice:
95      - do not set uice and vice to zero when OB*icefile are unspecified
96      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
97      - moved seaice tracer obcs after call to seaice_growth
98    o pkg/salt_plume: added various options for salt plume depth
99      criterion and for vertical distribution of the salt
100    
101    checkpoint59l
102    o pkg/ptracers: new version of ptracers pickup:
103      read meta file and write only fields which are needed to restart.
104      ( same logic as main pickup file ; also using pickupStrictlyMatch )
105    o pkg/seaice:
106      - add timescale for melting due to warm mixed layer as a means of
107        setting SEAICE_availHeatFrac more conveniently
108      - add a CPP-flag/runtime parameter check for flooding algorithm
109      - reformulated availHeat in seaice_growth.F to be independent of AREA
110    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
111      unit changes
112    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
113    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
114      SX vector computer.
115    o pkg/seaice:
116      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
117        seaice forcing fields can now be read only through pkg/exf
118      - removed some unused halos
119    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
120    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
121      or U/VICE from U/VWIND before computing U/VSTRESS
122    
123    checkpoint59k
124    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
125      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
126    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
127      all experiments pass when compile with un-initialised var. checking option.
128    o added pkg/salt_plume
129    o script to test restart (for now, in MITgcm_contrib/jmc_script)
130    o pkg/seaice: new read/write pickup version.
131      read meta file and write only fields which are needed to restart.
132      ( same logic as main pickup file ; also using pickupStrictlyMatch )
133    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
134    o lab_sea.hb87: modify the domain & update output.hb87.txt :
135      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
136      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
137      process. Fixed here by closing the domain at the Northern boundary.
138    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
139    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
140      a set of consecutive levels in/from a 3-D array.
141    o pkg/ptracers:
142      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
143      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
144    
145    checkpoint59j
146    o in pkgs: dic, obcs, offline, rbcs:
147      standard way to compute coeff. for time interpolation between 2 time reccords
148      which retains full precision (& make results less dependent on compiler).
149      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
150    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
151      packages instead of reading ice cover and wind speed separately
152    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
153     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
154      to allow to compile customized code before the update)
155    o cleaning-up:
156      - fix CPP instruction syntax in pkg/obcs
157      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
158        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
159      - fix some threads issue in IO parts.
160    o pkg/dic:
161      - add tons of "_d 0" (--> much better testreports !)
162       and then update outputs of tutorial_global_oce_biogeo
163    o pkg/mom_fluxform:
164      add a special version of momentum advection intended to conserve momentum
165      next to a bathymetry step or a coastline edge. (default = off = #undef)
166    o new read/write pickup version:
167      - for now, only implemented for main (mdsio) pickup file.
168      - write out only what is needed to restart; merge pickup_nh , pickup_ph
169        and main pickup together.
170      - read meta file; read only what is needed to restart; stop if a field
171        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
172        if it make sense (even if the restart is not perfect).
173      - if no meta file, assume that pickup to read corresponds exactly to
174        a pickup that would currently be written.
175      - read pickup written in the old format (until checkpoint59i) if it
176        recognizes an old meta file (no field-list).
177      - add a meta file in exp. which starts from a pickup: 2 cases:
178        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
179         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
180        b) a meta file describing the content of the associated pickup file
181         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
182    o pkg/mdsio & pkg/rw:
183      - new routine to read a meta file ; new set of routine to read
184        Multiple-fields file (with meta file).
185    o added open boundary conditions capability for seaice
186        HSNOW, HSALT, UICE, and VICE
187    
188    checkpoint59i
189    o adjoint:
190      * fix multiDimAdvection adjoint
191        (partial recomputation problem by TAF for fVerT(:,:,kDown)
192        and comlev1 size definition (maxpass vs. max. number of tracers)
193      * verification/global_ocean.90x45x15 adjoint now tests
194        NLFS and multiDimAdvection using DST3 (=30)
195      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
196    o pkg/kpp: add "_d 0" to real constant (if missing);
197      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
198      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
199    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
200      for internal parameters related to restart process (formerly from PARAMS.h)
201      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
202    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
203      as argument. (only atm2d & obcs write_pickup have not yet been updated)
204    o pkg/monitor:
205      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
206      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
207      - account for deep Atmosphere factor and density factor (anelastic)
208    o added open boundary conditions capability for seaice HEFF and AREA
209    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
210      thermodynamics
211      - requires a little reorganization, which affects the testreport results
212        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
213        so that now the conservative form is tested
214      - add a few comments
215    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
216    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
217    o add new diagnostics to seaice: advective, diffusive fluxes (only for
218      multidim-advection, for scheme 2 they are not filled) and transports,
219      thermodynamic growth rates
220    o change units of EmPmR (inside the code, + within coupling interface)
221      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
222      Affects results @ truncation level (cg2d match) and update output of
223       experiments: lab_sea(6), global_ocean.90x40x15(10),
224      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
225      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
226      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
227      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
228    
229    checkpoint59h
230    o pkg/exf:
231      - improve vectorization by moving if-statement out of loops in
232        exf_mapfields, exf_radiation
233      - exf_bulkformulae.F: introduce 2D fields and vectorize code
234    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
235    o testreport:
236      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
237        monitor & update offline_exf_seaice exp. output.
238      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
239    o pkg/seaice:
240      - bug fix in the evp solver: boundary conditions were affected be
241        masking of zMax/zMin (changes results)
242      - minor bug fix in boundary conditions in seaice_calc_strainrates
243        (changes results for no_slip)
244      - seaice_lsr.F: make interpolation of eta dependent on boundaries
245      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
246      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
247        stress formulation and no-slip boundary conditions
248    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
249      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
250    o pkg/seaice: a first HSALT time stepping equation has been checked in
251    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
252      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
253      without requiring DO-IF statements
254    o pkg/thsice:
255      use continuous power-law function for partition of energy between lateral
256      melting/freezing and thinning/thickening ; old code using step function
257      still available with #undef THSICE_FRACEN_POWERLAW
258      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
259    o testreport: change AD testing : check against results/output_adm.txt
260      using same scripts as for forward test.
261    
262    checkpoint59g
263    o adjoint testing: in preparation for changing testreport:
264      - output format: cost and grad written on separated lines
265      - ad output results in directory "results" (instead of "results_ad")
266    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
267    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
268    o pkg/ecco: allow user defined cost function contributions
269    o testreport:
270      Allow to choose (per experiment) the list of tested output variables
271       and the main variable (used to issue a pass/FAIL ) ;
272      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
273      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
274      Also modify printing of summary:
275       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
276       b) echo the list of tested variables in the individual summary.txt of
277          each experiment.
278    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
279      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
280      (but still depend on the tile decompostion of the domain).
281    o pkg/seaice: change a discretization detail to make the B-grid code
282      "more symmetric". This change is likely to remove all "ridges/leads" that
283      where quasi-aligned with the grid in B-grid solutions. It may also be
284      the solution to the stress coupling issues with the B-grid.
285    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
286      remove .cvsignore from input dir. (since testreport no longer run here).
287    o pkg/thsice:
288     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
289     - fix reshaping of sea-ice just after advection:
290       melt all the ice only if ice-volume is too small.
291     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
292       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
293     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
294    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
295      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
296    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
297      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
298      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
299      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
300      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
301      -> update output.txt
302    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
303     this affects truncation error: -> update output.txt of exp:
304      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
305      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
306    
307    checkpoint59f
308    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
309    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
310      a bounded range (in forward mode)
311    o pkg/ecco, ctrl, autodiff and mom_common:
312     internal parameter controls, completements of implementations
313    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
314    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
315      (not seem any difference in testing results).
316    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
317       at face corners.
318    o pkg/generic_advdiff:
319     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
320      loop range indices for computing vertical advection tendency
321      and do the calculation in the interior only (no overlap) ;
322      for now, only implemented for SOM advection (to save CPU time).
323     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
324    o exch2 adjoint
325      First set of changes:
326      - add exch2 hand-written adjoint templates
327      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
328        This will require cleanup in pkg/autodiff/*.F
329        (changed routines currently kept separate in verif. code/)
330      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
331        that used to hide exch2 or cubed-sphere specific code
332        (commented via 'cph-exch2')
333    o pkg/seaice
334      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
335    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
336       output of global_ocean.cs32x15.thsice .
337    
338    checkpoint59e
339    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
340      for B-grid vector (not yet tested) and C-grid vector (<- only used
341      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
342    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
343      (#ifdef ALLOW_SALT_PLUME)
344    o gather_2d/scatter_2d: removed halo regions
345    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
346      scheme and the corresponding test case (under front_relax dir). For now,
347      only available with Skew-flux form and not yet tested in realistic set-up.
348      adjoint: store directives updated, but gradient checks deteriorated,
349      so maybe GM/Redi adjoint is now broken.
350    o seaice adjoint
351      * add AREA, HEFF, HSNOW as control variable
352        (should not change lab_sea results)
353      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
354    o pkg/seaice:
355      * added computation of saltFlux in seaice_growth;
356        For time being, sea ice salinity is assumed constant
357        contribution of snow flooding to freshening of sea ice is neglected.
358        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
359        defaults to 0.0 in order to maintain backward compatibility.
360        Typical values for SEAICE_salinity are 4 to 10 g/kg.
361      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
362      * added SEAICE_availHeatFrac, which specifies fraction of surface level
363        heat content used to melt or grow ice
364      * commented out cap of HICE: it helps keep ice thinner
365      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
366      * applied OBCS T/S mask to HEFFM sea ice mask
367    
368    checkpoint59d
369    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
370     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
371     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
372    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
373     and change default value of parameter "GM_Small_Number";
374     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
375       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
376       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
377    o pkg/ecco: cost function when applying pkg/smooth to controls
378    o pkg/ctrl: add forcingPrecond run time parameter
379    o pkg/seaice:
380     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
381     - fix bug in metric terms of u-equation in LSR solver (implicit part),
382       changes verification/lab_sea
383     - rearrange implicit part of u-equation in LSR solver to make it easier to
384       read, understand, and debug. This causes changes at the truncation level.
385     - fix (serious) bug in the boundary conditions (sign error in the implicit
386       part) of the LSR solver. Changes all LSR results.
387     - fixed problem with HSNOW initialization to avoid thick snow when AREA
388       is initilized with small values - does not change lab_sea results.
389     - added HsnowFile initialization capability
390    o pkg/smooth: addition to model/src and pkg/ctrl so allow
391     initialization of pkg/smooth and application to control vector
392    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
393    o dependencies: pkg/profiles requires pkg/cal
394    o pkg/profiles:
395     - added option ALLOW_PROFILES_GENERICGRID
396         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
397         that interpolation information (grid points and coefficients) is provided
398         within the netcdf input files.
399         -> sample matlab scripts can be found in MITgcm_contrib/gael
400         that allow you to prepare netcdf input files.
401     - also modified: cleaner include statements, cleaner error print statements,
402       cleaner stops when error, and more tests of the netcdf input files consistency.
403    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
404    o pkg/seaice:
405     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
406       requires a new routine: seaice_diagnostics_fill.F
407     - make sure that seaice does not move if not forced (pressure replacement
408       method, Hibler and Ip, 1995), changes results
409     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
410     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
411       It is turned off by default (=-1.), because it changes the results.
412     - make it possible to read AREA from a file, too.
413    
414    checkpoint59c
415    o add S/R and diagnostics for oceanic mixed-layer depth
416    o move GMRedi call after all vertical mixing schemes (including KPP)
417    o pkg/thsice:
418     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
419      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
420    o pkg/obcs:
421     - bug fix for balance code
422    o pkg/seaice:
423      - allow values of SEAICE_elasticParm > 1
424      - add new parameter SEAICE_evpTauRelax as an alternative
425        to SEAICE_elasticParm
426      - make lsr boundary conditions free slip (by default), changes result
427      - add code for no slip boundary conditions for lsr
428      - set minimum of zeta to zero (and not 4e8) (changes results)
429      - add a cap on AREA after advecting AREA if seaice_growth is not called
430    o change calculation of Visbeck K:
431      - no longer depend on tapering scheme; instead, compute slope (limited
432        by GM_maxSlope). this is equivalent to what was comuted before with
433        clipping or linear tappering.
434      - fix vertical averaging (wrong by 1/2 level)
435      - leave the old version (but will not be maintained) within
436        #ifdef OLD_VISBECK_CALC / #endif
437      - update output of exp. ideal_2D_oce
438    o change error catch in calc_r_star to improve vectorization
439    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
440      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
441    o adjoint:
442      Re-organized adjoint checkpointing according to Matt Mazloff
443      (but with modifs/completions/cleanups)
444      Storing is now bundled into large arrays to optimized I/O
445      (and second step in cleanup of the_main_loop)
446    
447    checkpoint59b
448    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
449      - export/import (between ocean & coupler) fields needed for ocean DIC.
450    o pkg/seaice:
451      - get rid of three more exchanges seaice_calc_viscosities (required
452        different loop boundaries in seaice_lsr and seaice_ocean_stress)
453      - bug fix in seaice_ocean_stress (update of lab_sea required)
454      - reduce loop boundaries to necessary minimum also in seaice_evp
455      - go back to the old way of computing deltaC/Z as the adjoint likes that
456        better
457    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
458      passive tracer to an Age Tracer) + update output.txt
459    o pkg/exf:
460      - implement A-grid / C-grid selection for wind-stress input files.
461      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
462      for now, in exf_bulk_largeyeager04.F only :
463      - change implementation for case where windspeed + 2. components wind-stress
464        are read-in. AND use rhoConstFresh to convert evap.
465    o pkg/seaice:
466      - use correct EXCH_UV for wind-forcing (on A-grid).
467      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
468        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
469    o pkg/exf:
470      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
471      EXF_INTERPOLATION:
472      - merge global_with_exf/code version of exf_interp_read.F
473        to the main code ;
474      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
475        reading the file ; Important: This options needs to be defined to recover
476        previous code.
477        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
478      - no longer loose real*8 precision along the way when using exf_iprec=64.
479    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
480      - change discretisation of evp-solver in order to avoid another exchange
481        (changes lab_sea) and clean up a little
482      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
483        help the adjoint (this also changes the results slightly)
484      - add a few "_d 0" where they had been missing in seaice_evp.F
485      - cleaning up: remove unused seaice_calc_rhs.F
486    o pkg/exf: some cleaning-up:
487      - change various "constants" into runtime parameters
488      - cleaned-up Large&Yeager04 routine which should eventually
489        replace exf_bulkformulae.F (changed names of S/R and CPP)
490        and merged various ALLOW_ATM_WIND options
491     only used with thsice pkg (in thsice_get_exf.F):
492      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
493        which are used when useStabilityFct_overIce=TRUE (= the default)
494      - change default values of ice & snow emissivity and scale downward LW
495        by ice & snow emissivity.
496    o pkg/thsice:
497     fix few little problems, in thsice_calc_thickn.F:
498      - growth vertically (and not laterally) if iceFrac == iceMaskMax
499      - melt only laterally if hIce < hThinIce (as the comments say)
500      and in thsice_extend.F:
501      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
502      - start to form ice as soon as the minimum ice-volume is reachable.
503     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
504      and cpl_aim+ocn
505    o pkg/kpp
506     - move computation of surface related input fields to KPP into a new
507       subroutine kpp_forcing_surf.F
508     - remove wrong (within bi,bj loops) EXCH calls.
509     - little cleaning (add argument myThid in last position, cvs header ...)
510     - for now, fix conservation problem by exchanging KPPviscAz (may not
511       be the best fix)
512    o pkg/seaice
513     - check for inconsistent evp parameter/cpp-flag combination
514     - remove leftover errIO flat for obsolete name list error handling
515    o OpenAD
516     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
517    
518    checkpoint59a
519    o pkg/seaice: some parameter clarifications and a little bit of clean up
520    o pkg/thsice: rename run-time parameters:
521       himin       -> hIceMin
522       himin0      -> hThinIce
523       hihig       -> hThickIce
524       i0          -> i0swFrac
525       transCoef   -> bMeltCoef
526       frac_energy -> fracMelting
527      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
528       with default values (for now) that do not change the results.
529      remove old version of thsice vars advection in pkg/seaice.
530    o in FFIELDS.h:
531      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
532      - make pLoad & sIceLoad always available (but still only used if
533         ATMOSPHERIC_LOADING is #define).
534    o pkg/kpp: replaced _KPP_RL with _RL
535    o bug fixes for vertical diffusivity computations when both KPP and
536        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
537        are no longer updating the vertical diffusivity array
538        (passed as argument) but are (re-) setting those arrays.
539    o pkg/seaice: fix bug in evp solver, while doing that
540      - change (improve?) discretization of stress computations for both
541        cgrid-lsr and evp solver
542      - add a new routine to compute strain rates
543      - the above changes lab_sea results
544      - add no slip conditions for evp solver (off by default), lsr-version
545        may follow
546      - fix exchange for shear at Z-points (does not change lab_sea)
547      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
548        (to force the user to pick a time step since there is not "safe" way
549        of choosing it)
550      - add principal stress diagnostics
551      - rearrange fields for evp a little to avoid having to call a: too many
552        exchanges and b: exchanges for stress trensor components which we do
553        not have.
554      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
555        of evp, complete rewrite for lsr case (latter is does not yet work
556        in all cases)
557    o pkg/kpp: add code to have mixing in shelf ice caverns
558      - add myThid to all kpp routines (long overdue)
559    
560    checkpoint59
561    o pkg/exf:
562      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
563        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
564      - move exf header files from lower_case.h to UPPER_CASE.h ;
565        add missing cvs Header & Name
566      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
567      - add namelist param. selectStressGridPosition, exf_monFreq
568      - retire many _CLIM routines, and remove data.exf_clim
569        + params moved to data.exf
570        + climsst, climsss now handled by exf_set_gen, i.e.
571          climss?period=0 refers to constant field,
572          climss?period=-12 to monthly forcing
573      - split up namelists in data.exf
574    o pkg/seaice:
575      - remove seaice_exch and seaice_exch_uv
576      - remove superfluous exchange of theta
577      - add myThid to seaice_budget_ocean/ice
578      - add new interface for atmospheric wind forcing (C-grid only)
579        + new routine
580        + two new field (taux, tauy for stress over ice)
581        + removed one global field (DAIRN) for C-grid case only
582    o pkg/thsise
583      - 2nd set of modifs for thsice adjoint in conjunction with exf
584    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
585    
586    checkpoint58y_post
587    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
588      vertical diffusivity, similar to that in MOM4; turned on using
589      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
590      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
591    o Added capability for 3D specification of background vertical diffusion
592      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
593      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
594      "data" file that contains the 3D vertical diffusivity coefficients.
595    o ice dynamics (pkg/seaice) with thsice thermodynamics:
596      - add code within pkg thsice to advect & diffuse sea-ice fields
597      similar to (and will replace) what has been added in  seaice_advdiff.F,
598      but: - conserving Mass, Heat & Salt.
599           - better when using non-linear advection scheme (not yet fully tested)
600           - can also be used in atmospheric set-up (for now, only the diffusion).
601    
602    checkpoint58x_post
603    o IO option for global-file compact format:
604      - add options when generating topology (utils/exch2/matlab-topology-generator)
605      - add I/O capability (pkg/mdsio).
606      - adapt utils/matlab/rdmds.m to read this format.
607      for now long-line format not yet supported by pkg/mdsio (& exch2).
608    o shelfice: add a few diagnostics
609    
610    checkpoint58w_post
611    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
612      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
613      (and replace horiVertRatio in NH code).
614      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
615                         and tutorial_plume_on_slope (sensitive to truncation)
616    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
617      directly to drive seaice model (C-grid only)
618    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
619     - reintroduce computation of wind from stress,
620     - compute tau (in exf_bulkformulae.F) from windstress averaged to
621       mass points to avoid tau = 0
622     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
623    o rdmnc.m: make it work with "global" files created with gluemnc
624    o rdmnc.m : some improvements in dealing with singleton dimension
625      (tested on all testreport mnc output files).
626    o genmake2: disable pkg/profiles if netcdf test fails.
627    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
628    o move call to cal_readparms up to make calendar parameters/variable available
629      to all packages
630    
631    checkpoint58v_post
632    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
633      useDynP_inEos_Zc tested.
634    o pkg/exf: changes to properly interpolate/mask/scale initial fields
635    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
636      and portions thereof.  See read_cs.txt for description and examples.
637    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
638      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
639      following the great-circle arc between those 2 points.
640    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
641      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
642    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
643     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
644     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
645     - still needs work (not working with some options ; efficiency to improve)
646       and serious testing.
647     - use this scheme for temperature & salinity in 2 advection test exp.:
648       advect_xy & advect_xz, respectively.
649    
650    checkpoint58u_post
651    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
652    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
653    o testreport: add option "-skipdir" to skip some test.
654    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
655      momentum calculation.
656    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
657    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
658      remove checkpoint.F and the_correction_step.F (no longer used);
659      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
660    o add option (linFSConserveTr) to correct for tracer source/sink due to
661      Linear Free surface
662    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
663    o pkg/thsice: fix reading mnc-pickups
664    
665    checkpoint58t_post
666    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
667    o pkg/mdsio:
668     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
669       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
670       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
671     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
672     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
673       either MDS_READ_FIELD or MDS_WRITE_FIELD )
674     - new S/R (to replace MDSWRITEMETA), which allows to write more
675       informations (variable names, time ...) to meta files.
676     - modify rdmds.m to give back the meta file content.
677    o pkg/diagnostics: change vertical interpolation to be safer, and more
678       flexible (define p-levels to interpolate to in data.diagnostics);
679      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
680       diagnostic pointer.
681    o pkg/seaice: more cleaning up of seaice_growth, added many comments
682    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
683    o fix multi-category seaice:
684     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
685       SEAICE_MULTICATEGORY
686     - fix short wave heat flux
687    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
688       and allow to use EVP solver. Change forward lab_sea: test both EVP
689       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
690    o Initial check-in of lab_sea adjoint
691      (very similar to natl_box_adjoint/code_seaice)
692      * used C-grid and EVP solver
693      * used KPP, GM/Redi
694      * uses inAdExact=.TRUE.
695      * gradient checks fail for both ADM and TLM
696        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
697        f.d. gradients actually seem more problematic than ADM, TLM gradients;
698        issue is related to forward mismatch between g77 an ifort
699    o pkg/seaice: overhaul of thermodynamics
700     - growth.F and groatb.F are replaced by new routine seaice_growth.F
701     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
702     - move a few global fields out of SEAICE.h into seaice_growth.F and
703       make them 2D (FICE/QNETO/ ...)
704     - remove FO (it is the same as QNETO)
705     - introduce a few local fields to avoid modifying external fields such
706       as atemp, etc.
707    
708    checkpoint58s_post
709    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
710      changed exf_set_gen.F so that
711        genperiod=0 means input file is one time-constant field and
712        genperiod=-12 means input file contains 12 monthly means
713    o CG2D: use pre-computed solver main-diagonal (stored in common block);
714      this affects truncation error ; generate new output file for exp. which
715      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
716        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
717        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
718        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
719        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
720        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
721    o start implementation of deep-atmosphere and anelastic formulation
722    o verification: remove 2nd copy of input files and use script "prepare_run"
723      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
724    o mom_common/vecinv/fluxform: fix a few initialisation isssues
725    o profiles: fix for multithreaded case
726    
727    o diagnostics: rename few diags:
728      s/'PRESSURE'/'RCENTER '/g
729      s/'TICE    '/'oceFreez'/g
730      s/'TAUX    '/'oceTAUX '/g
731      s/'TAUY    '/'oceTAUY '/g
732      s/'SWFLUX  '/'oceQsw  '/g
733      s/DIFx/DFxE/g
734      s/DIFy/DFyE/g
735      and add few ocean-forcing diagnostics:
736      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
737    o modifications to pkg/seaice/growth.F and budget.F, which change results of
738      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
739      as actual snow thickness.  It now refers everywhere to effective snow
740      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
741    
742    checkpoint58r_post
743    o modifications to pkg/seaice/growth.F, which change results of
744      lab_sea experiment: fixes pertain to melting snow over open water, to
745      masking EVAP under sea ice, and to using the correct AREA variable for
746      computations of EVAP, PRECIP, HSNOW, and GHEFF
747    o add ability to read bathy, salt, and theta using MNC (off by def)
748    o add flooding algorithm and advection of HSNOW for pkg/seaice;
749      both are turned off by default and do no change any results
750    o seaice advection with pkg/thsice: a step toward the use of non-linear
751      advection scheme, but #ifdef or commented out for now (requires more EXCH).
752    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
753      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
754      in natl_box (affects results @ truncation level: update output.txt)
755    o multi-threading and IO:
756      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
757      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
758        (needed to work with SingleCpuIO): tested in all verif. exp.
759    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
760      affects the results (but none of the verification test uses this scheme).
761    o Adding some pkg/diagnostics capability to pkg/seaice
762      (will certainly be subject to changes)
763    o ctrl: adding new control variables:
764      lwflux, lwdown, evap, snowprecip, apressure, runoff
765    
766    checkpoint58q_post
767    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
768      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
769      high_res_cube configuration by 4% on Columbia.
770    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
771      add (in global_with_exf/code) a version of EXF_INTERP_READ without
772      dynamical allocation (seems to work in multi-threaded).
773    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
774      single CPU io) so that TAF does not have to see EESUPPORT.h
775    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
776    
777    checkpoint58p_post
778    o obcs: stop if obcs is used with useCDscheme = .true.
779    o shelfice:
780     - fix a sign error so that no slip at shelfice interface works
781     - remove stop for combination non-hydrostatic code and shelfice. That does
782       not mean, that the results are correct, but at least they are numerically
783       stable
784    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
785    o added adjoint exch routined for all exch*3d* routines
786      and updated flow directives
787    
788    checkpoint58o_post
789    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
790      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
791    o change controling S/R for writing pickup file (new S/R do_write_pickup)
792      and clean-up reading/writing of pickup files.
793    o fix local version of read/write pickup (NH part) in rotating_tank/code
794    o simplify EXCH interface:
795     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
796     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
797    o added the regrid package
798    o shelfice:
799     - add a simple boundary layer scheme to reduce noise
800     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
801    
802    checkpoint58n_post
803    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
804       local variable (not in common block).
805    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
806      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
807      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
808        to work with SingleCpuIO.
809    o add "_d 0" to real constant of pkg/cfc subroutines ;
810       update exp. cfc_exemple & tutorial_cfc_offline output files.
811    o multi-threading and IO:
812      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
813        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
814      - barrier before and after reading.
815      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
816      - avoid using MDS_WRITELOCAL for LAND pkg output.
817      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
818        common-block variables ; Allows multi-threading with master-thread IO.
819    o change default MAX_NO_THREADS from 32 to 4 ;
820      and stop cleanly when MAX_NO_THREADS is too small.
821    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
822    
823    checkpoint58m_post
824    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
825       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
826    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
827       keep global_ocean.90x40x15 (for AD testing) with former secondary test
828       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
829    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
830        add MITgcm_tutorials (= code + all the tutorials)
831    o ecco, option to compute cost for total ssh (mean+anom)
832    o consistent with addition of ptracer and ssh in pkg/profiles
833    o profiles: adding ptracer and ssh
834    o testreport: change multi-test output-file name
835      (from output.txt.{name} to output.{name}.txt)
836    o profiles: now ok for mutli-tiles case
837    o seaice: add 4 parameters for different advection schemes for area,
838      (effective) seaice thickness, enthalphy, and snow height. Their default
839      is the standard parameter SEAICEadvScheme
840    o calc_gw:
841     - add cosFacU in zonal viscous flux (harmonic.visc.).
842     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
843       of tutorial_plume_on_slope.
844    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
845    o calc_gw: true flux-form, account for horizontal grid spacing.
846      update rotating_tank results, but not plume_on_slope (affected at
847      truncation level, 11 digits).
848    
849    checkpoint58l_post
850    o calc_gw:
851     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
852     - remove side-drag for now (need to fix it); update plume_on_slope results.
853     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
854    o commit code to make SST/SSS weights spatially variable
855      (based on either variable in-situ or variable initial T/S weights)
856    o pkg/ecco:
857      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
858        now based on horizontally varying weights wthetaLev, wsaltLev
859      * cost_averagesflags now returns year indices in addition to day, month
860      * sflux balance is performed on annual basis
861        (sflxumm, sfluxmm2, bal_sfluxmm)
862      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
863        including separate counting and multipliers
864    o pkg/rbcs
865      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
866    
867    checkpoint58k_post
868    o testreport:
869     - always build in dir. "build" (if not there, mkdir build instead of building
870       & running in input)
871     - run in dir run (if it exists), in build otherwise.
872     - call prepare_run (if input/prepare_run exists)
873     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
874    o pkg/exf modifications to interpolation and rotation routines for more
875       reasonable treatment of North Pole singularity: for tracers North Pole
876       value is set to northernmost zonal-mean value, for zonal velocity it is
877       set to zero, and for meridional velocity it is set to northernmost value.
878    o pkg/exf/exf_check_range.F
879     - add tile index to diagnostics and move stop statement to the very
880       end of the routine.
881    o pkg/diagnostics: (diagnostics_main_init.F)
882      define title of isomorphic variables according to the current config.
883    o pkg/thsice with pkg/seaice dynamics:
884    - fix domain of computation (interior only, required for exf) and do exchanges
885    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
886    o towards a standard way of dealing with multi-threading in MONITOR
887      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
888    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
889       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
890    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
891    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
892    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
893       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
894    o tracer advection:
895     - clean-up and simplify calc_common_factors.F
896     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
897       advection subroutine (but still not used within DST advection S/R)
898    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
899    
900    checkpoint58j_post
901    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
902      from file (collects calls previously in FORWARD_STEP)
903    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
904    o adjoint store dir. adjusted accordingly
905    o genmake2
906      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
907    
908    checkpoint58i_post
909    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
910      on wind stress (SEAICEstressFactor defaults to 1.)
911    o Total number of Timers is finite (<=40): comment out 2 non-essential one
912      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
913    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
914      on CS-grid: no longer loosing mass.
915    o exf & curvilinear-grid: no longer modify longitude xC & xG.
916    o pkg/ggl90: fix sloppy output and fix a bug
917    o pkg/seaice: added SEAICEuseEVPpickup parameter
918      - Set to false in order to start EVP solver with
919        non-EVP pickup files when using SEAICEuseEVP
920      - fix sign error in diffusion in seaice_calc_rhs
921    
922    checkpoint58h_post
923    * Modifications for bottom topography control
924      o replace hFacC by _hFacC at various places
925      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
926      o add non-self-adjoint cg2d_nsa
927      o update autodiff support routines
928      o re-initialise hfac after ctrl_depth_ini
929      o works for 5x5 box, doesnt work for global_ocean.90x40x15
930    * Adding verification for 5x5 box (4-layer) bottom topography control
931    
932    checkpoint58g_post
933    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
934       used for mean seasonal cycle, mean diurnal cycle); add an example
935       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
936    o pkg/ggl90:
937      - add parameter (minimum surface kinetic energy)
938      - fix bug (avoiding division by zero)
939    o couple pkg/thsice to pkg/seaice:
940      - modify advection in seaice to accomodate new scalar fields to be advected
941      - only muliDimAdection scheme work with seaice/thsice
942      - mapping of thsice-variables to seaice-variables, back and forth
943      - does not break the verification experiments, but does not give the
944        desired results either
945    o pkg/seaice
946      - make (default) second order advection a bit less confusing?
947    
948    checkpoint58f_post
949    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
950      to pkg/seaice):
951      - new routines thsice_map_exf and thsice_get_exf provide the interface
952      - add an additional formal parameter to thsice_solve4temp
953    o pkg/exf:
954      - add new fields wspeed, snowprecip (to be able to couple to thsice)
955      - correct Stefan-Boltzmann constant
956      - new parameter for longwave surface emittance
957      - separate some stuff from exf_bulkformulae into new routines  
958        exf_radiation, exf_wind
959      - add new parameters and constants: longwave emissivity for ocean, ice
960        and snow, evaporation parameters over ice
961      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
962        either wind from stress or stress from wind
963    o pkg/thSIce:
964    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
965    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
966       and THSICE_CALC_THICKN
967    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
968    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
969      to make debugging easier.
970    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
971    o pkg/bulk_force:
972      - clean-up comments and parameters ;
973      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
974    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
975      generate new output for test-experiment: aim.5l_cs.thSI
976    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
977      testreport accordingly
978    
979    checkpoint58e_post
980    o SEAICE_CGRID adjoint done
981    o R_STAR adjoint implemented.
982      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
983      * need to sort out init. of h0facc, etc.
984    o Make pkg/profile fully independent of ecco,cost, etc. stuff
985      to be able to use it in pure forward.
986    
987    checkpoint58d_post
988    o upgrade simple test-experiment to tutorial example:
989     step.1: duplicate the experiment and (step.2) will remove the old copy.
990      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
991      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
992      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
993      tutorial_global_oce_biogeo    <- copy of dic_example
994      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
995      tutorial_plume_on_slope       <- copy of plume_on_slope
996      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
997      tutorial_global_oce_optim     <- empty for now (David ?)
998      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
999     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1000    o correct a sign problem in cost_scat.F
1001    o obcs and ptracers: fix boundary conditions for advections schemes
1002      with larger stencil
1003    o thsice adjoint: start
1004    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1005      completeness
1006    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1007      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1008    o ptracers adjoint:
1009      * avoid extensive recomputatations
1010      * fix missing re-init. of gptr (missed by TAF)
1011    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1012      me to turn off the excessive output to STDOUT that this package produces
1013    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1014      and add those terms in Vector-Invariant formulation.
1015    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1016      if the control period (xx_hfluxperiod etc) is 0
1017    o in profiles pkg, clean routines and fix details
1018    o in ecco pkg, reading ssh data:
1019      fix problem in case the model does not start at iter0=0
1020    o fix mnc-pickup/restart for ptracers
1021    o new package prifiles:
1022      code to compute profile-based cost by Gael Forget
1023      (modifs in ecco, ctrl, autodiff)
1024    o Benign bug fix in initialization (spotted by M. Mazloff) of
1025      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1026    
1027    checkpoint58c_post
1028    o adjoint: finish NLFS adjoint and provide reference output in
1029      verification/global_ocean.90x40x15/results_ad_nlfs
1030    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1031      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1032      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1033      with SEAICE_CGRID defined.
1034    o move calendarDumps from "data" to "data.cal" and clean-up the code
1035      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1036    o add useEXF & useCAL flags (for now, set in hard-coded way)
1037    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1038      (were missing in NH mode, and wrong in quasihydrostatic mode).
1039      waiting for Chris updated version of calc_gw to add those CALLs.
1040    o fix bug in quasihydrostatic S/R ;
1041      add a test for this option: global_ocean.90x40x15.qshyd
1042    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1043      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1044    o add on/off flag useOffLine for package OFFLINE
1045    o seaice:
1046      - modify advection so that it works also on the C-grid
1047      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1048        problem in multi-tile runs with C-grid
1049      - add flags for clipping ice velocities and/or masking solver forcing
1050      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1051        C-grid solver
1052      - added a few comments to seaice_diffusion.F
1053      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1054        are now exclusive)
1055      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1056        required re-ordering the code a little:
1057       + make DAIRN global variable (defined in SEAICE)
1058       + move computation of the viscosities eta and zeta into a new separate
1059         routine (because I need to recompute them in seaice_ocean_stress.F)
1060    
1061    checkpoint58b_post
1062    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1063      update output.txt of exp. aim.5l_cs.thSI
1064    o various mnc cleanups and improvements:
1065      + shrink lookup tables by factor of ~4
1066      + better error reporting when running out of lookup space
1067      + able to handle longer path/file names (up to 500 chars)
1068    o adjoint:
1069      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1070      - TBD: "hidden" mom_vecinv recomp. in dynamics
1071    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1072     (allow to differentiate between forcing components using new integer flags:
1073      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1074     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1075    o ecco
1076      - enable trend removal from SSH anomaly obs.
1077    o adjoint
1078      - a fix for PmEpR when #undef EXACT_CONSERV
1079      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1080      - try to fix "hidden" recomp. in forward_step for NLFS
1081        (NLFS seems broken sometimes after I checked it in)
1082    o seaice:
1083     - add c-grid version of the dynamic solver:
1084       + three new routines that are the c-grid substitute lsr, dynsolver
1085         and ostres
1086       + put a few fields that were local to dynsolver into global common
1087         blocks, so that I can move the computation of stresses etc into
1088         seaice_lsr (saves coding but may break the adjoint).
1089     - replace more hardwired parameters by runtime parameters
1090     - add ice masks that mask the rhs of the implicit solvers where there
1091       is no ice (commented out in seaice_dynsolver, because i am not sure
1092       if this works properly), eventually this should replace the clipping
1093       of ice velocities in seaice_dynsolver to +/-40cm/s.
1094    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1095      include it only where its needed
1096    o move balancing of fluxes before the call of external_forcing_surf
1097    o seaice:
1098      - correct units of turning angles (now they are really in degrees)
1099      - move computation of GWATX/Y out of main routine into dynsolver
1100      - initialize GWATX/Y in seaice_init
1101    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1102      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1103    o seaice: add runtime flags for turning angles (default to zero)
1104    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1105      and trend from exf forcing and ctrl control adjustments
1106    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1107      (since checkpoint57x_post)
1108    o change the default rotation period to 86164.s = the Earth rotation
1109    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1110      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1111    o seaice advection: add code for choosing between the default (2nd order
1112      central differences) and multiDim advection schemes provided by
1113      pkg/generic_advdiff
1114    o seaice:
1115      - removed all references to SEAICE_GRID.h fields from
1116        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1117        (cubed-sphere configuration will change a little)
1118      - grid computations in seaice_init are obsolete now.
1119      - cleaned up code a little so that is easier to read (hopefully).
1120      - added new (better?) discretizations of default advection and diffusion
1121        (turn on with SEAICEuseFluxForm)
1122      - replace 1 in 3d global fields by kSurface in growth.F
1123      
1124    checkpoint58a_post
1125    o seaice:
1126      - bug fix in advect.F
1127    o shelfice:
1128      - separate shelfice load anomaly from pload (breaks with time
1129        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1130        Its default is 0., but it may be computed more cleverly from (unknown)
1131        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1132        done offline. A good approximation of the pressure load anomaly is
1133        necessary to avoid large initial adjustment processes underneath
1134        deep-reaching shelfice.
1135      - small fix in ISOMIP shelfice_thermodynamics
1136      - add more sophisticated thermodynamics of Hellmer (1989), this is
1137        now the default
1138      - give a few constants more intuitive names
1139    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1140      if bulk formulae are used in long integration (especially EmPmR). Turn
1141      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1142      if balancePrintMean, the imbalance that is substracted is printed to
1143      STDOUT.
1144    o fix bug (typo) in obcs_apply_eta.F
1145    o add a new package shelfice which enables us to model the circulation
1146      underneath shelf-ice with draughts of hundreds of meters.
1147     - works
1148     - to do: + include improved thermodynamics
1149              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1150                instead of new field kTopC
1151              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1152                instead of new field R_shelfIce and new code in ini_depth.F
1153                and ini_mask_etc.F?
1154              + adjust vertical mixing schemes?
1155    o seaice pkg:
1156     - add a cpp-flag to include a simple formula for a salinity dependent
1157       freezing point of sea water at the surface
1158     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1159       meridional stresses are now different (and hopefully correct)
1160    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1161       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1162       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1163    o pkg/diagnostics: add options and parameters for regional-statistics
1164       diagnostics ; define regions by reading a region-mask from a file
1165       (might add other options later)
1166    o pkg/bulk_force:
1167     - add option and parameters to use AIM surface-flux formulae.
1168     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1169       others forcing fields (defined in PARM05, parameter file "data") are loaded
1170       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1171     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1172     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1173     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1174       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1175     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1176    
1177    checkpoint58
1178    o add "--embed-source" option to genmake2 which, when the supporting
1179      tools can be compiled (as determined by genmake2) will turn on the
1180      embed_files package which then embeds the entire MITgcm source code
1181      (*.[fFhc] + Makefile) used for the build within the executable
1182      - requested by CNH but off by default
1183      - adds a paltry <9MB to the mitgcmuv executable in most cases
1184      - only writes the output when useEMBEDSRC in eedata is true
1185    o clean up 3-dim. relaxation codes:
1186      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1187      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1188      * Thanks to Tom Haine for testing!
1189    
1190    checkpoint57z_post
1191    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1192      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1193    o fix the pickup behavior for obcs in combination with ptracers
1194    o fix a bug in ptracers_external_fields_load
1195    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1196      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1197    o transfered surface NH pressure to eta field (if exactConserv).
1198    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1199         and update lab_sea output.txt file.
1200    o completing 3-dim. relaxation code: additional term
1201         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1202      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1203      * At compile time, in "EXF_OPTIONS.h" set
1204          #define  ALLOW_CLIMTEMP_RELAXATION
1205          #define  ALLOW_CLIMSALT_RELAXATION
1206      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1207          tauThetaClimRelax3Dim = 15552000.0,
1208          tauSaltClimRelax3Dim  = 15552000.0,
1209      * 3 cases:
1210          1) Use a constant-in-time 3-dim. field
1211          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1212          3) Real-time relax. to time-evolving prescribed field
1213    o Adding Laplacian-type smoothness constraint on
1214      initial and boundary (forcing) controls (ic, bc)
1215      * enable at compile-time via
1216        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1217      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1218      * Absolute scale somewhat unclear so far
1219      * no area weighting was included since no other cost term does so far
1220    
1221    checkpoint57y_post
1222    First step for a NLFS adjoint
1223    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1224    o new init. routines for calc_r_star, calc_surf_dr
1225    o still need to deal with ini_masks_etc
1226    o testreport seemed happy
1227    checkpoint57y_pre
1228    
1229    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1230    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1231    o add new offset feature to offline pkg (plus minor cleanup)
1232    o cfc fixes for final year of integration
1233    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1234      be in GCHEM_OPTIONS).
1235    
1236    checkpoint57x_post
1237    o fix testreport Pb in multiple test experiment.
1238    o cleanup our namelist syntax in verification:
1239      - make it more F95 standards compliant (some work still needed)
1240      - allows the vast majority of our tests to work with gfortran
1241    o Non-Hydrostatic:
1242     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1243     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1244    o Allow to apply AB on T,S rather than on AB(gT,gS):
1245     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1246     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1247       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1248     - need a "clever" read_pickup to restart from the other AB formulation
1249    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1250    o remove some unused variables (reduces number of compiler warnings)
1251    o adjoint
1252      * Disable useVariableViscosity for adjoint for time being
1253        (there are a number of extensive recomputations)
1254      * Initialize certain variables needed for adjoint
1255    
1256    checkpoint57w_post
1257    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1258                 fix the singleCpuIO RS version of MDSWRITEFIELD
1259       and add a WARNING if using globalFiles=T with multi-processors.
1260    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1261      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1262    o tracer advection scheme:
1263      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1264       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1265       was not very convenient).
1266      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1267       (further tests needed for the implicit DST & Flux-Limiter schemes).
1268    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1269      and sRef for convenience, handy, when you want to initialize
1270      ptracers in a large domain with a constant non-zero value. Also,
1271      untangle ptracers_init.F a little.
1272    
1273    checkpoint57v_post
1274    o change dome exp. to use variable viscosity in side-drag terms.
1275    o remove all the files from the cfc_offline test since they are now
1276      incorporated into tutorial_cfc_offline which has been producing
1277      identical results for a few days of testing
1278    o add new parameter: sideDragFactor to enable half-slip-side BC
1279      and change side-drag S/R to use viscosity from mom_calc_visc
1280      (can switch back by setting sideDragFactor=0.); affects results at
1281      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1282       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1283    o vorticity & strain are now computed without masking, to account for
1284      no-slip-side BC in variable viscosity calculation ; mask is applied
1285      anyway later on, before computing advection/coriolis terms.
1286    o modify exp4 to test new obcs support for reading from external files
1287      and for passive tracers
1288    o fix behavior of ptracers_monitor when monitor output is written to a
1289      netcdf-file; still not independent of monitor.F (writes in the same
1290      file).
1291    o change default value of tRef (put a uniform, meaningful value for ocean
1292      & atmos) and initialize sRef (was missing, as Martin mentioned).
1293    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1294      to be proportional to enstrophy dissipation length.  Thus,
1295       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1296      This is now consistent with Smagorinsky and with the manual.
1297    
1298    checkpoint57u_post
1299    o OBCS and PTRACERS: add open boundary support for passive tracers
1300      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1301        OB-values from file; this is not different from the way theta and salinity
1302        are treated
1303      - however, Orlanski-radiation conditions are not supported, and the model
1304        will stop if you use pTracers and Orlanski at the same time.
1305      - beefed up the rountine obcs_external_fields_load: now only those open
1306        boundary values are overwritten with values from files for which there
1307        are really files, otherwise the OB-fields remain untouched. This makes
1308        it possible to use different OBs at different ends of the domain (as
1309        with EXF)
1310    o reduce number of exch calls in shap_filt (s2).
1311    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1312      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1313    
1314    checkpoint57t_post
1315    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1316    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1317      same truncation, independent of the face number: affects affects several
1318      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1319    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1320      note that biharmonic viscosity + no-slip was not tested in any experiment.
1321    o fix bug in non-linear free-surf side-drag ; generate new output for
1322      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1323    o make mnc honor the writeBinaryPrec flag for most kinds of output
1324    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1325    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1326      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1327    o add brackets in multi-terms sum to get same truncation, independent of
1328      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1329      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1330    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1331      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1332      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1333      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1334      Suggested values of viscosity parameters found in mom_calc_visc.
1335      Many new viscosity diagnostics available.
1336    
1337    checkpoint57s_post
1338    o Add clearing-house for viscosity calculations, mom_calc_visc and
1339      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1340      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1341      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1342      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1343      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1344      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1345      ViscAhStrain and viscAhTension are now retired.
1346    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1347    o In response to JMC's bug report, genmake2 now ignores any soft-links
1348      that it finds in the *current* directory when searching for files.
1349      Soft-links found in any other source directories will still work as
1350      they did before.
1351    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1352      a C routine to unlimit the stack size
1353    o mnc-ify pkg/aim snapshot vars
1354    o mnc-ify pkg/land as requested by Daniel
1355    o various changes to mnc including:
1356      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1357      - output can now be grouped so that all files within a group
1358          change the ITER portion of their names in lock-step together
1359      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1360          and works with both EXCH1 and EXCH2 (but needs more testing)
1361      - writing works for all verification test cases w/ g77 on Linux
1362    
1363    checkpoint57r_post
1364    o make MNC variable initialization happen earlier
1365    o add diagnostics for (almost) each term of the momentum Eq.
1366    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1367    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1368    o remove MINIMAL_TAVE_OUTPUT option ;
1369      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1370    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1371      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1372    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1373    o add time-dependent SST, SSS control
1374    o cost terms in ecco/ modularized (new cost_generic.F)
1375    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1376    o new infrastructure for seaice model vs. obs misfits in seaice/
1377      * driver from the_main_loop.F is seaice_cost_driver.F
1378      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1379      * gradient check in Exp. 6a of natl_box_adjoint/
1380    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1381      (see README file)
1382    
1383    checkpoint57q_post
1384    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1385    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1386      - bug was reported by Jean-Michel and Ian Fenty
1387    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1388      update exp. cpl_aim+ocn output.
1389    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1390      Needed for high-res. runs with large global files
1391      to be able to limit tapelev size
1392    o Changed some tests for adjoint:
1393      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1394      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1395      * global_ocean.90x40x15/ back to default 3-level checkpointing
1396    o Modifications to enable scripted COMMON to MODULE conversion
1397      * verification/OpenAD/code/ has necessary scripts and description;
1398      * converts, compiles and runs successfully;
1399    
1400    checkpoint57p_post
1401    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1402    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1403      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1404    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1405    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1406      (was already the case for dissipation with mom_vecinv,
1407       and also the case for grad.PhiHyd when staggered-timeStep)
1408      This will allow to put dissipation out-off the AB time-stepping.
1409     Unfortunately, affects truncation error. Update output of exp. that "fails"
1410      (cg2d matching number) and leave the others for later: front_relax(10),
1411      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1412      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1413    
1414    checkpoint57o_post
1415    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1416      (2) its ready to be documented during the 20050801 DocFest
1417    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1418      for ideal_2D_oce and lab_sea on linux_ia32_g77
1419    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1420      in global1x1_tot/code_seaice_adj to access indices 32, 33
1421      (worth another tag)
1422    
1423    checkpoint57n_post
1424    o adding precip control xx_precip 32
1425    o adding swflux control xx_swflux 33
1426    o Replacing 10 forcing penalty cost routines by 1 generic.
1427    o Implementing partitioning in time-mean and variable adjustment
1428      for atmos. state.
1429    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1430  o in natl_box_adjoint:  o in natl_box_adjoint:
1431    * updated: results_bulk/    * updated exp 1 to 10
1432    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1433    o updated global1x1/*_seaice_adj/
1434      to incorporate latest changes
1435    o enable useSingleCpuIO for mdsio vector routines
1436      (applies in particular to tapelev I/O)
1437    o removed inefficient K-loop in all active_file*control*.F
1438    
1439  checkpoint57m_post  checkpoint57m_post
1440  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)  o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)

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