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revision 1.519 by heimbach, Thu Jul 28 14:35:47 2005 UTC revision 1.958 by jmc, Thu Feb 14 15:51:30 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/diagnostics (stats-diags):
8  o moved ptracer ctrl index 17 -> 32    - fix global Min/Max in case 1 processor get only empty tiles
9    o genmake2: replace (4 times)
10         make genmake_tc_1.o >> genmake_warnings 2>&1
11      with
12         COMM="$CC $CFLAGS -c genmake_tc_1.c"
13         echo $COMM >> genmake_warnings
14         $COMM >> genmake_warnings 2>&1
15      to make genmake2 always see the value of CC as specified in the optfile.
16    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
17      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
18      - modify verification advect_cs test to test SOM-advection on CS-grid.
19    o pkg/ctrl:
20      - Rewrite of ctrl_map_ini_ecco.F,
21        introducing a generic routine (ctrl_map_ini_gen.F).
22      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
23    
24    checkpoint59n
25    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
26      number in dedicate array "hdiag":
27      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
28        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
29      - many small changes (integer format) for large number of diagnostics
30      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
31        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
32    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
33      usingSphericalGrid, this allows to define the rotated grid coordinates
34      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
35      geographical coordinates according to the inverse of the rotation defined
36      by the Euler angles, so that Coriolis parameter and online-interpolation by
37      exf works with the geographical coordinates on XC/YC/XG/YG.
38      Naturally, this feature does not work with all packages, so some
39      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
40      profiles), because there the coordinates are assumed to be regular
41      spherical grid coordinates.
42    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
43      - introduce isopycnal diffusion coefficient control.
44    o tools/adjoint_options:
45      - additional control vector components.
46    o pkg/mnc: have mnc create marginally meaning full coordinate variables
47      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
48    o pkg/mypackage:
49      - add example of read/write pickup for state-var ;
50      - add entry points to the main code for state-vars diags & write-pickup.
51    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
52      transitions for useExfYearlyFields
53      - add new subroutine that determines the file to read from for
54        use*YearlyFields = .TRUE. and .FALSE.
55      - add a verification experiment to global_with_exf that tests
56        useExfYearlyFields with USE_EXF_INTERPOLATION defined
57    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
58      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
59      subroutines (which could be generated from a template, because they are
60      almost identical), for now they are included in obcs_prescribe_read.F for
61      simplicity
62    o pkg/exf:
63      - add a little more diagnostic to exf_interp_read (in analogy to
64        mds_read_field, can be turned off with debugLevel < debugLevA=1)
65      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
66        ugly but fast by unrolling short inner loops, inserting a unroll=8
67        directive in routine lagran, and splitting a loop and making do while the
68        outermost loop (the latter requires the intoduction of index arrays)
69    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
70    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
71      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
72    o verification/seaice_obcs: updated for restart test and latest options
73    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
74      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
75      for now this is only available for the C-grid code and also within
76      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
77    
78    checkpoint59m
79    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
80      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
81    o gad_som : fix flux output (& diagnostics) to have same units as other  
82      advection scheme fluxes (was previously multiplied by deltaT).  
83    o added verification/seaice_obcs both to test seaice open boundaries
84      and to provide an example matlab scrpt for generating them
85    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
86    o pkg/salt_plume: clean up salt_plume_frac.F to
87      remove redundancy in PlumeMethod 1 and 4
88    o pkg/kpp: added saltplume diagnostics
89    o pkg/obcs and pkg/seaice:
90      - do not set uice and vice to zero when OB*icefile are unspecified
91      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
92      - moved seaice tracer obcs after call to seaice_growth
93    o pkg/salt_plume: added various options for salt plume depth
94      criterion and for vertical distribution of the salt
95    
96    checkpoint59l
97    o pkg/ptracers: new version of ptracers pickup:
98      read meta file and write only fields which are needed to restart.
99      ( same logic as main pickup file ; also using pickupStrictlyMatch )
100    o pkg/seaice:
101      - add timescale for melting due to warm mixed layer as a means of
102        setting SEAICE_availHeatFrac more conveniently
103      - add a CPP-flag/runtime parameter check for flooding algorithm
104      - reformulated availHeat in seaice_growth.F to be independent of AREA
105    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
106      unit changes
107    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
108    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
109      SX vector computer.
110    o pkg/seaice:
111      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
112        seaice forcing fields can now be read only through pkg/exf
113      - removed some unused halos
114    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
115    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
116      or U/VICE from U/VWIND before computing U/VSTRESS
117    
118    checkpoint59k
119    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
120      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
121    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
122      all experiments pass when compile with un-initialised var. checking option.
123    o added pkg/salt_plume
124    o script to test restart (for now, in MITgcm_contrib/jmc_script)
125    o pkg/seaice: new read/write pickup version.
126      read meta file and write only fields which are needed to restart.
127      ( same logic as main pickup file ; also using pickupStrictlyMatch )
128    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
129    o lab_sea.hb87: modify the domain & update output.hb87.txt :
130      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
131      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
132      process. Fixed here by closing the domain at the Northern boundary.
133    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
134    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
135      a set of consecutive levels in/from a 3-D array.
136    o pkg/ptracers:
137      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
138      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
139    
140    checkpoint59j
141    o in pkgs: dic, obcs, offline, rbcs:
142      standard way to compute coeff. for time interpolation between 2 time reccords
143      which retains full precision (& make results less dependent on compiler).
144      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
145    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
146      packages instead of reading ice cover and wind speed separately
147    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
148     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
149      to allow to compile customized code before the update)
150    o cleaning-up:
151      - fix CPP instruction syntax in pkg/obcs
152      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
153        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
154      - fix some threads issue in IO parts.
155    o pkg/dic:
156      - add tons of "_d 0" (--> much better testreports !)
157       and then update outputs of tutorial_global_oce_biogeo
158    o pkg/mom_fluxform:
159      add a special version of momentum advection intended to conserve momentum
160      next to a bathymetry step or a coastline edge. (default = off = #undef)
161    o new read/write pickup version:
162      - for now, only implemented for main (mdsio) pickup file.
163      - write out only what is needed to restart; merge pickup_nh , pickup_ph
164        and main pickup together.
165      - read meta file; read only what is needed to restart; stop if a field
166        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
167        if it make sense (even if the restart is not perfect).
168      - if no meta file, assume that pickup to read corresponds exactly to
169        a pickup that would currently be written.
170      - read pickup written in the old format (until checkpoint59i) if it
171        recognizes an old meta file (no field-list).
172      - add a meta file in exp. which starts from a pickup: 2 cases:
173        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
174         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
175        b) a meta file describing the content of the associated pickup file
176         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
177    o pkg/mdsio & pkg/rw:
178      - new routine to read a meta file ; new set of routine to read
179        Multiple-fields file (with meta file).
180    o added open boundary conditions capability for seaice
181        HSNOW, HSALT, UICE, and VICE
182    
183    checkpoint59i
184    o adjoint:
185      * fix multiDimAdvection adjoint
186        (partial recomputation problem by TAF for fVerT(:,:,kDown)
187        and comlev1 size definition (maxpass vs. max. number of tracers)
188      * verification/global_ocean.90x45x15 adjoint now tests
189        NLFS and multiDimAdvection using DST3 (=30)
190      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
191    o pkg/kpp: add "_d 0" to real constant (if missing);
192      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
193      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
194    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
195      for internal parameters related to restart process (formerly from PARAMS.h)
196      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
197    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
198      as argument. (only atm2d & obcs write_pickup have not yet been updated)
199    o pkg/monitor:
200      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
201      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
202      - account for deep Atmosphere factor and density factor (anelastic)
203    o added open boundary conditions capability for seaice HEFF and AREA
204    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
205      thermodynamics
206      - requires a little reorganization, which affects the testreport results
207        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
208        so that now the conservative form is tested
209      - add a few comments
210    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
211    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
212    o add new diagnostics to seaice: advective, diffusive fluxes (only for
213      multidim-advection, for scheme 2 they are not filled) and transports,
214      thermodynamic growth rates
215    o change units of EmPmR (inside the code, + within coupling interface)
216      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
217      Affects results @ truncation level (cg2d match) and update output of
218       experiments: lab_sea(6), global_ocean.90x40x15(10),
219      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
220      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
221      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
222      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
223    
224    checkpoint59h
225    o pkg/exf:
226      - improve vectorization by moving if-statement out of loops in
227        exf_mapfields, exf_radiation
228      - exf_bulkformulae.F: introduce 2D fields and vectorize code
229    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
230    o testreport:
231      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
232        monitor & update offline_exf_seaice exp. output.
233      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
234    o pkg/seaice:
235      - bug fix in the evp solver: boundary conditions were affected be
236        masking of zMax/zMin (changes results)
237      - minor bug fix in boundary conditions in seaice_calc_strainrates
238        (changes results for no_slip)
239      - seaice_lsr.F: make interpolation of eta dependent on boundaries
240      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
241      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
242        stress formulation and no-slip boundary conditions
243    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
244      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
245    o pkg/seaice: a first HSALT time stepping equation has been checked in
246    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
247      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
248      without requiring DO-IF statements
249    o pkg/thsice:
250      use continuous power-law function for partition of energy between lateral
251      melting/freezing and thinning/thickening ; old code using step function
252      still available with #undef THSICE_FRACEN_POWERLAW
253      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
254    o testreport: change AD testing : check against results/output_adm.txt
255      using same scripts as for forward test.
256    
257    checkpoint59g
258    o adjoint testing: in preparation for changing testreport:
259      - output format: cost and grad written on separated lines
260      - ad output results in directory "results" (instead of "results_ad")
261    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
262    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
263    o pkg/ecco: allow user defined cost function contributions
264    o testreport:
265      Allow to choose (per experiment) the list of tested output variables
266       and the main variable (used to issue a pass/FAIL ) ;
267      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
268      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
269      Also modify printing of summary:
270       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
271       b) echo the list of tested variables in the individual summary.txt of
272          each experiment.
273    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
274      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
275      (but still depend on the tile decompostion of the domain).
276    o pkg/seaice: change a discretization detail to make the B-grid code
277      "more symmetric". This change is likely to remove all "ridges/leads" that
278      where quasi-aligned with the grid in B-grid solutions. It may also be
279      the solution to the stress coupling issues with the B-grid.
280    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
281      remove .cvsignore from input dir. (since testreport no longer run here).
282    o pkg/thsice:
283     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
284     - fix reshaping of sea-ice just after advection:
285       melt all the ice only if ice-volume is too small.
286     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
287       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
288     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
289    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
290      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
291    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
292      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
293      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
294      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
295      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
296      -> update output.txt
297    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
298     this affects truncation error: -> update output.txt of exp:
299      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
300      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
301    
302    checkpoint59f
303    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
304    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
305      a bounded range (in forward mode)
306    o pkg/ecco, ctrl, autodiff and mom_common:
307     internal parameter controls, completements of implementations
308    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
309    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
310      (not seem any difference in testing results).
311    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
312       at face corners.
313    o pkg/generic_advdiff:
314     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
315      loop range indices for computing vertical advection tendency
316      and do the calculation in the interior only (no overlap) ;
317      for now, only implemented for SOM advection (to save CPU time).
318     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
319    o exch2 adjoint
320      First set of changes:
321      - add exch2 hand-written adjoint templates
322      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
323        This will require cleanup in pkg/autodiff/*.F
324        (changed routines currently kept separate in verif. code/)
325      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
326        that used to hide exch2 or cubed-sphere specific code
327        (commented via 'cph-exch2')
328    o pkg/seaice
329      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
330    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
331       output of global_ocean.cs32x15.thsice .
332    
333    checkpoint59e
334    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
335      for B-grid vector (not yet tested) and C-grid vector (<- only used
336      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
337    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
338      (#ifdef ALLOW_SALT_PLUME)
339    o gather_2d/scatter_2d: removed halo regions
340    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
341      scheme and the corresponding test case (under front_relax dir). For now,
342      only available with Skew-flux form and not yet tested in realistic set-up.
343      adjoint: store directives updated, but gradient checks deteriorated,
344      so maybe GM/Redi adjoint is now broken.
345    o seaice adjoint
346      * add AREA, HEFF, HSNOW as control variable
347        (should not change lab_sea results)
348      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
349    o pkg/seaice:
350      * added computation of saltFlux in seaice_growth;
351        For time being, sea ice salinity is assumed constant
352        contribution of snow flooding to freshening of sea ice is neglected.
353        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
354        defaults to 0.0 in order to maintain backward compatibility.
355        Typical values for SEAICE_salinity are 4 to 10 g/kg.
356      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
357      * added SEAICE_availHeatFrac, which specifies fraction of surface level
358        heat content used to melt or grow ice
359      * commented out cap of HICE: it helps keep ice thinner
360      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
361      * applied OBCS T/S mask to HEFFM sea ice mask
362    
363    checkpoint59d
364    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
365     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
366     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
367    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
368     and change default value of parameter "GM_Small_Number";
369     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
370       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
371       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
372    o pkg/ecco: cost function when applying pkg/smooth to controls
373    o pkg/ctrl: add forcingPrecond run time parameter
374    o pkg/seaice:
375     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
376     - fix bug in metric terms of u-equation in LSR solver (implicit part),
377       changes verification/lab_sea
378     - rearrange implicit part of u-equation in LSR solver to make it easier to
379       read, understand, and debug. This causes changes at the truncation level.
380     - fix (serious) bug in the boundary conditions (sign error in the implicit
381       part) of the LSR solver. Changes all LSR results.
382     - fixed problem with HSNOW initialization to avoid thick snow when AREA
383       is initilized with small values - does not change lab_sea results.
384     - added HsnowFile initialization capability
385    o pkg/smooth: addition to model/src and pkg/ctrl so allow
386     initialization of pkg/smooth and application to control vector
387    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
388    o dependencies: pkg/profiles requires pkg/cal
389    o pkg/profiles:
390     - added option ALLOW_PROFILES_GENERICGRID
391         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
392         that interpolation information (grid points and coefficients) is provided
393         within the netcdf input files.
394         -> sample matlab scripts can be found in MITgcm_contrib/gael
395         that allow you to prepare netcdf input files.
396     - also modified: cleaner include statements, cleaner error print statements,
397       cleaner stops when error, and more tests of the netcdf input files consistency.
398    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
399    o pkg/seaice:
400     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
401       requires a new routine: seaice_diagnostics_fill.F
402     - make sure that seaice does not move if not forced (pressure replacement
403       method, Hibler and Ip, 1995), changes results
404     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
405     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
406       It is turned off by default (=-1.), because it changes the results.
407     - make it possible to read AREA from a file, too.
408    
409    checkpoint59c
410    o add S/R and diagnostics for oceanic mixed-layer depth
411    o move GMRedi call after all vertical mixing schemes (including KPP)
412    o pkg/thsice:
413     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
414      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
415    o pkg/obcs:
416     - bug fix for balance code
417    o pkg/seaice:
418      - allow values of SEAICE_elasticParm > 1
419      - add new parameter SEAICE_evpTauRelax as an alternative
420        to SEAICE_elasticParm
421      - make lsr boundary conditions free slip (by default), changes result
422      - add code for no slip boundary conditions for lsr
423      - set minimum of zeta to zero (and not 4e8) (changes results)
424      - add a cap on AREA after advecting AREA if seaice_growth is not called
425    o change calculation of Visbeck K:
426      - no longer depend on tapering scheme; instead, compute slope (limited
427        by GM_maxSlope). this is equivalent to what was comuted before with
428        clipping or linear tappering.
429      - fix vertical averaging (wrong by 1/2 level)
430      - leave the old version (but will not be maintained) within
431        #ifdef OLD_VISBECK_CALC / #endif
432      - update output of exp. ideal_2D_oce
433    o change error catch in calc_r_star to improve vectorization
434    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
435      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
436    o adjoint:
437      Re-organized adjoint checkpointing according to Matt Mazloff
438      (but with modifs/completions/cleanups)
439      Storing is now bundled into large arrays to optimized I/O
440      (and second step in cleanup of the_main_loop)
441    
442    checkpoint59b
443    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
444      - export/import (between ocean & coupler) fields needed for ocean DIC.
445    o pkg/seaice:
446      - get rid of three more exchanges seaice_calc_viscosities (required
447        different loop boundaries in seaice_lsr and seaice_ocean_stress)
448      - bug fix in seaice_ocean_stress (update of lab_sea required)
449      - reduce loop boundaries to necessary minimum also in seaice_evp
450      - go back to the old way of computing deltaC/Z as the adjoint likes that
451        better
452    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
453      passive tracer to an Age Tracer) + update output.txt
454    o pkg/exf:
455      - implement A-grid / C-grid selection for wind-stress input files.
456      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
457      for now, in exf_bulk_largeyeager04.F only :
458      - change implementation for case where windspeed + 2. components wind-stress
459        are read-in. AND use rhoConstFresh to convert evap.
460    o pkg/seaice:
461      - use correct EXCH_UV for wind-forcing (on A-grid).
462      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
463        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
464    o pkg/exf:
465      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
466      EXF_INTERPOLATION:
467      - merge global_with_exf/code version of exf_interp_read.F
468        to the main code ;
469      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
470        reading the file ; Important: This options needs to be defined to recover
471        previous code.
472        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
473      - no longer loose real*8 precision along the way when using exf_iprec=64.
474    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
475      - change discretisation of evp-solver in order to avoid another exchange
476        (changes lab_sea) and clean up a little
477      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
478        help the adjoint (this also changes the results slightly)
479      - add a few "_d 0" where they had been missing in seaice_evp.F
480      - cleaning up: remove unused seaice_calc_rhs.F
481    o pkg/exf: some cleaning-up:
482      - change various "constants" into runtime parameters
483      - cleaned-up Large&Yeager04 routine which should eventually
484        replace exf_bulkformulae.F (changed names of S/R and CPP)
485        and merged various ALLOW_ATM_WIND options
486     only used with thsice pkg (in thsice_get_exf.F):
487      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
488        which are used when useStabilityFct_overIce=TRUE (= the default)
489      - change default values of ice & snow emissivity and scale downward LW
490        by ice & snow emissivity.
491    o pkg/thsice:
492     fix few little problems, in thsice_calc_thickn.F:
493      - growth vertically (and not laterally) if iceFrac == iceMaskMax
494      - melt only laterally if hIce < hThinIce (as the comments say)
495      and in thsice_extend.F:
496      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
497      - start to form ice as soon as the minimum ice-volume is reachable.
498     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
499      and cpl_aim+ocn
500    o pkg/kpp
501     - move computation of surface related input fields to KPP into a new
502       subroutine kpp_forcing_surf.F
503     - remove wrong (within bi,bj loops) EXCH calls.
504     - little cleaning (add argument myThid in last position, cvs header ...)
505     - for now, fix conservation problem by exchanging KPPviscAz (may not
506       be the best fix)
507    o pkg/seaice
508     - check for inconsistent evp parameter/cpp-flag combination
509     - remove leftover errIO flat for obsolete name list error handling
510    o OpenAD
511     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
512    
513    checkpoint59a
514    o pkg/seaice: some parameter clarifications and a little bit of clean up
515    o pkg/thsice: rename run-time parameters:
516       himin       -> hIceMin
517       himin0      -> hThinIce
518       hihig       -> hThickIce
519       i0          -> i0swFrac
520       transCoef   -> bMeltCoef
521       frac_energy -> fracMelting
522      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
523       with default values (for now) that do not change the results.
524      remove old version of thsice vars advection in pkg/seaice.
525    o in FFIELDS.h:
526      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
527      - make pLoad & sIceLoad always available (but still only used if
528         ATMOSPHERIC_LOADING is #define).
529    o pkg/kpp: replaced _KPP_RL with _RL
530    o bug fixes for vertical diffusivity computations when both KPP and
531        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
532        are no longer updating the vertical diffusivity array
533        (passed as argument) but are (re-) setting those arrays.
534    o pkg/seaice: fix bug in evp solver, while doing that
535      - change (improve?) discretization of stress computations for both
536        cgrid-lsr and evp solver
537      - add a new routine to compute strain rates
538      - the above changes lab_sea results
539      - add no slip conditions for evp solver (off by default), lsr-version
540        may follow
541      - fix exchange for shear at Z-points (does not change lab_sea)
542      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
543        (to force the user to pick a time step since there is not "safe" way
544        of choosing it)
545      - add principal stress diagnostics
546      - rearrange fields for evp a little to avoid having to call a: too many
547        exchanges and b: exchanges for stress trensor components which we do
548        not have.
549      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
550        of evp, complete rewrite for lsr case (latter is does not yet work
551        in all cases)
552    o pkg/kpp: add code to have mixing in shelf ice caverns
553      - add myThid to all kpp routines (long overdue)
554    
555    checkpoint59
556    o pkg/exf:
557      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
558        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
559      - move exf header files from lower_case.h to UPPER_CASE.h ;
560        add missing cvs Header & Name
561      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
562      - add namelist param. selectStressGridPosition, exf_monFreq
563      - retire many _CLIM routines, and remove data.exf_clim
564        + params moved to data.exf
565        + climsst, climsss now handled by exf_set_gen, i.e.
566          climss?period=0 refers to constant field,
567          climss?period=-12 to monthly forcing
568      - split up namelists in data.exf
569    o pkg/seaice:
570      - remove seaice_exch and seaice_exch_uv
571      - remove superfluous exchange of theta
572      - add myThid to seaice_budget_ocean/ice
573      - add new interface for atmospheric wind forcing (C-grid only)
574        + new routine
575        + two new field (taux, tauy for stress over ice)
576        + removed one global field (DAIRN) for C-grid case only
577    o pkg/thsise
578      - 2nd set of modifs for thsice adjoint in conjunction with exf
579    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
580    
581    checkpoint58y_post
582    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
583      vertical diffusivity, similar to that in MOM4; turned on using
584      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
585      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
586    o Added capability for 3D specification of background vertical diffusion
587      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
588      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
589      "data" file that contains the 3D vertical diffusivity coefficients.
590    o ice dynamics (pkg/seaice) with thsice thermodynamics:
591      - add code within pkg thsice to advect & diffuse sea-ice fields
592      similar to (and will replace) what has been added in  seaice_advdiff.F,
593      but: - conserving Mass, Heat & Salt.
594           - better when using non-linear advection scheme (not yet fully tested)
595           - can also be used in atmospheric set-up (for now, only the diffusion).
596    
597    checkpoint58x_post
598    o IO option for global-file compact format:
599      - add options when generating topology (utils/exch2/matlab-topology-generator)
600      - add I/O capability (pkg/mdsio).
601      - adapt utils/matlab/rdmds.m to read this format.
602      for now long-line format not yet supported by pkg/mdsio (& exch2).
603    o shelfice: add a few diagnostics
604    
605    checkpoint58w_post
606    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
607      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
608      (and replace horiVertRatio in NH code).
609      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
610                         and tutorial_plume_on_slope (sensitive to truncation)
611    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
612      directly to drive seaice model (C-grid only)
613    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
614     - reintroduce computation of wind from stress,
615     - compute tau (in exf_bulkformulae.F) from windstress averaged to
616       mass points to avoid tau = 0
617     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
618    o rdmnc.m: make it work with "global" files created with gluemnc
619    o rdmnc.m : some improvements in dealing with singleton dimension
620      (tested on all testreport mnc output files).
621    o genmake2: disable pkg/profiles if netcdf test fails.
622    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
623    o move call to cal_readparms up to make calendar parameters/variable available
624      to all packages
625    
626    checkpoint58v_post
627    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
628      useDynP_inEos_Zc tested.
629    o pkg/exf: changes to properly interpolate/mask/scale initial fields
630    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
631      and portions thereof.  See read_cs.txt for description and examples.
632    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
633      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
634      following the great-circle arc between those 2 points.
635    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
636      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
637    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
638     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
639     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
640     - still needs work (not working with some options ; efficiency to improve)
641       and serious testing.
642     - use this scheme for temperature & salinity in 2 advection test exp.:
643       advect_xy & advect_xz, respectively.
644    
645    checkpoint58u_post
646    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
647    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
648    o testreport: add option "-skipdir" to skip some test.
649    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
650      momentum calculation.
651    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
652    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
653      remove checkpoint.F and the_correction_step.F (no longer used);
654      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
655    o add option (linFSConserveTr) to correct for tracer source/sink due to
656      Linear Free surface
657    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
658    o pkg/thsice: fix reading mnc-pickups
659    
660    checkpoint58t_post
661    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
662    o pkg/mdsio:
663     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
664       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
665       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
666     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
667     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
668       either MDS_READ_FIELD or MDS_WRITE_FIELD )
669     - new S/R (to replace MDSWRITEMETA), which allows to write more
670       informations (variable names, time ...) to meta files.
671     - modify rdmds.m to give back the meta file content.
672    o pkg/diagnostics: change vertical interpolation to be safer, and more
673       flexible (define p-levels to interpolate to in data.diagnostics);
674      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
675       diagnostic pointer.
676    o pkg/seaice: more cleaning up of seaice_growth, added many comments
677    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
678    o fix multi-category seaice:
679     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
680       SEAICE_MULTICATEGORY
681     - fix short wave heat flux
682    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
683       and allow to use EVP solver. Change forward lab_sea: test both EVP
684       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
685    o Initial check-in of lab_sea adjoint
686      (very similar to natl_box_adjoint/code_seaice)
687      * used C-grid and EVP solver
688      * used KPP, GM/Redi
689      * uses inAdExact=.TRUE.
690      * gradient checks fail for both ADM and TLM
691        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
692        f.d. gradients actually seem more problematic than ADM, TLM gradients;
693        issue is related to forward mismatch between g77 an ifort
694    o pkg/seaice: overhaul of thermodynamics
695     - growth.F and groatb.F are replaced by new routine seaice_growth.F
696     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
697     - move a few global fields out of SEAICE.h into seaice_growth.F and
698       make them 2D (FICE/QNETO/ ...)
699     - remove FO (it is the same as QNETO)
700     - introduce a few local fields to avoid modifying external fields such
701       as atemp, etc.
702    
703    checkpoint58s_post
704    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
705      changed exf_set_gen.F so that
706        genperiod=0 means input file is one time-constant field and
707        genperiod=-12 means input file contains 12 monthly means
708    o CG2D: use pre-computed solver main-diagonal (stored in common block);
709      this affects truncation error ; generate new output file for exp. which
710      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
711        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
712        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
713        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
714        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
715        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
716    o start implementation of deep-atmosphere and anelastic formulation
717    o verification: remove 2nd copy of input files and use script "prepare_run"
718      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
719    o mom_common/vecinv/fluxform: fix a few initialisation isssues
720    o profiles: fix for multithreaded case
721    
722    o diagnostics: rename few diags:
723      s/'PRESSURE'/'RCENTER '/g
724      s/'TICE    '/'oceFreez'/g
725      s/'TAUX    '/'oceTAUX '/g
726      s/'TAUY    '/'oceTAUY '/g
727      s/'SWFLUX  '/'oceQsw  '/g
728      s/DIFx/DFxE/g
729      s/DIFy/DFyE/g
730      and add few ocean-forcing diagnostics:
731      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
732    o modifications to pkg/seaice/growth.F and budget.F, which change results of
733      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
734      as actual snow thickness.  It now refers everywhere to effective snow
735      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
736    
737    checkpoint58r_post
738    o modifications to pkg/seaice/growth.F, which change results of
739      lab_sea experiment: fixes pertain to melting snow over open water, to
740      masking EVAP under sea ice, and to using the correct AREA variable for
741      computations of EVAP, PRECIP, HSNOW, and GHEFF
742    o add ability to read bathy, salt, and theta using MNC (off by def)
743    o add flooding algorithm and advection of HSNOW for pkg/seaice;
744      both are turned off by default and do no change any results
745    o seaice advection with pkg/thsice: a step toward the use of non-linear
746      advection scheme, but #ifdef or commented out for now (requires more EXCH).
747    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
748      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
749      in natl_box (affects results @ truncation level: update output.txt)
750    o multi-threading and IO:
751      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
752      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
753        (needed to work with SingleCpuIO): tested in all verif. exp.
754    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
755      affects the results (but none of the verification test uses this scheme).
756    o Adding some pkg/diagnostics capability to pkg/seaice
757      (will certainly be subject to changes)
758    o ctrl: adding new control variables:
759      lwflux, lwdown, evap, snowprecip, apressure, runoff
760    
761    checkpoint58q_post
762    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
763      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
764      high_res_cube configuration by 4% on Columbia.
765    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
766      add (in global_with_exf/code) a version of EXF_INTERP_READ without
767      dynamical allocation (seems to work in multi-threaded).
768    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
769      single CPU io) so that TAF does not have to see EESUPPORT.h
770    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
771    
772    checkpoint58p_post
773    o obcs: stop if obcs is used with useCDscheme = .true.
774    o shelfice:
775     - fix a sign error so that no slip at shelfice interface works
776     - remove stop for combination non-hydrostatic code and shelfice. That does
777       not mean, that the results are correct, but at least they are numerically
778       stable
779    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
780    o added adjoint exch routined for all exch*3d* routines
781      and updated flow directives
782    
783    checkpoint58o_post
784    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
785      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
786    o change controling S/R for writing pickup file (new S/R do_write_pickup)
787      and clean-up reading/writing of pickup files.
788    o fix local version of read/write pickup (NH part) in rotating_tank/code
789    o simplify EXCH interface:
790     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
791     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
792    o added the regrid package
793    o shelfice:
794     - add a simple boundary layer scheme to reduce noise
795     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
796    
797    checkpoint58n_post
798    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
799       local variable (not in common block).
800    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
801      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
802      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
803        to work with SingleCpuIO.
804    o add "_d 0" to real constant of pkg/cfc subroutines ;
805       update exp. cfc_exemple & tutorial_cfc_offline output files.
806    o multi-threading and IO:
807      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
808        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
809      - barrier before and after reading.
810      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
811      - avoid using MDS_WRITELOCAL for LAND pkg output.
812      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
813        common-block variables ; Allows multi-threading with master-thread IO.
814    o change default MAX_NO_THREADS from 32 to 4 ;
815      and stop cleanly when MAX_NO_THREADS is too small.
816    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
817    
818    checkpoint58m_post
819    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
820       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
821    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
822       keep global_ocean.90x40x15 (for AD testing) with former secondary test
823       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
824    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
825        add MITgcm_tutorials (= code + all the tutorials)
826    o ecco, option to compute cost for total ssh (mean+anom)
827    o consistent with addition of ptracer and ssh in pkg/profiles
828    o profiles: adding ptracer and ssh
829    o testreport: change multi-test output-file name
830      (from output.txt.{name} to output.{name}.txt)
831    o profiles: now ok for mutli-tiles case
832    o seaice: add 4 parameters for different advection schemes for area,
833      (effective) seaice thickness, enthalphy, and snow height. Their default
834      is the standard parameter SEAICEadvScheme
835    o calc_gw:
836     - add cosFacU in zonal viscous flux (harmonic.visc.).
837     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
838       of tutorial_plume_on_slope.
839    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
840    o calc_gw: true flux-form, account for horizontal grid spacing.
841      update rotating_tank results, but not plume_on_slope (affected at
842      truncation level, 11 digits).
843    
844    checkpoint58l_post
845    o calc_gw:
846     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
847     - remove side-drag for now (need to fix it); update plume_on_slope results.
848     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
849    o commit code to make SST/SSS weights spatially variable
850      (based on either variable in-situ or variable initial T/S weights)
851    o pkg/ecco:
852      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
853        now based on horizontally varying weights wthetaLev, wsaltLev
854      * cost_averagesflags now returns year indices in addition to day, month
855      * sflux balance is performed on annual basis
856        (sflxumm, sfluxmm2, bal_sfluxmm)
857      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
858        including separate counting and multipliers
859    o pkg/rbcs
860      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
861    
862    checkpoint58k_post
863    o testreport:
864     - always build in dir. "build" (if not there, mkdir build instead of building
865       & running in input)
866     - run in dir run (if it exists), in build otherwise.
867     - call prepare_run (if input/prepare_run exists)
868     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
869    o pkg/exf modifications to interpolation and rotation routines for more
870       reasonable treatment of North Pole singularity: for tracers North Pole
871       value is set to northernmost zonal-mean value, for zonal velocity it is
872       set to zero, and for meridional velocity it is set to northernmost value.
873    o pkg/exf/exf_check_range.F
874     - add tile index to diagnostics and move stop statement to the very
875       end of the routine.
876    o pkg/diagnostics: (diagnostics_main_init.F)
877      define title of isomorphic variables according to the current config.
878    o pkg/thsice with pkg/seaice dynamics:
879    - fix domain of computation (interior only, required for exf) and do exchanges
880    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
881    o towards a standard way of dealing with multi-threading in MONITOR
882      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
883    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
884       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
885    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
886    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
887    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
888       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
889    o tracer advection:
890     - clean-up and simplify calc_common_factors.F
891     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
892       advection subroutine (but still not used within DST advection S/R)
893    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
894    
895    checkpoint58j_post
896    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
897      from file (collects calls previously in FORWARD_STEP)
898    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
899    o adjoint store dir. adjusted accordingly
900    o genmake2
901      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
902    
903    checkpoint58i_post
904    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
905      on wind stress (SEAICEstressFactor defaults to 1.)
906    o Total number of Timers is finite (<=40): comment out 2 non-essential one
907      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
908    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
909      on CS-grid: no longer loosing mass.
910    o exf & curvilinear-grid: no longer modify longitude xC & xG.
911    o pkg/ggl90: fix sloppy output and fix a bug
912    o pkg/seaice: added SEAICEuseEVPpickup parameter
913      - Set to false in order to start EVP solver with
914        non-EVP pickup files when using SEAICEuseEVP
915      - fix sign error in diffusion in seaice_calc_rhs
916    
917    checkpoint58h_post
918    * Modifications for bottom topography control
919      o replace hFacC by _hFacC at various places
920      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
921      o add non-self-adjoint cg2d_nsa
922      o update autodiff support routines
923      o re-initialise hfac after ctrl_depth_ini
924      o works for 5x5 box, doesnt work for global_ocean.90x40x15
925    * Adding verification for 5x5 box (4-layer) bottom topography control
926    
927    checkpoint58g_post
928    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
929       used for mean seasonal cycle, mean diurnal cycle); add an example
930       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
931    o pkg/ggl90:
932      - add parameter (minimum surface kinetic energy)
933      - fix bug (avoiding division by zero)
934    o couple pkg/thsice to pkg/seaice:
935      - modify advection in seaice to accomodate new scalar fields to be advected
936      - only muliDimAdection scheme work with seaice/thsice
937      - mapping of thsice-variables to seaice-variables, back and forth
938      - does not break the verification experiments, but does not give the
939        desired results either
940    o pkg/seaice
941      - make (default) second order advection a bit less confusing?
942    
943    checkpoint58f_post
944    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
945      to pkg/seaice):
946      - new routines thsice_map_exf and thsice_get_exf provide the interface
947      - add an additional formal parameter to thsice_solve4temp
948    o pkg/exf:
949      - add new fields wspeed, snowprecip (to be able to couple to thsice)
950      - correct Stefan-Boltzmann constant
951      - new parameter for longwave surface emittance
952      - separate some stuff from exf_bulkformulae into new routines  
953        exf_radiation, exf_wind
954      - add new parameters and constants: longwave emissivity for ocean, ice
955        and snow, evaporation parameters over ice
956      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
957        either wind from stress or stress from wind
958    o pkg/thSIce:
959    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
960    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
961       and THSICE_CALC_THICKN
962    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
963    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
964      to make debugging easier.
965    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
966    o pkg/bulk_force:
967      - clean-up comments and parameters ;
968      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
969    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
970      generate new output for test-experiment: aim.5l_cs.thSI
971    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
972      testreport accordingly
973    
974    checkpoint58e_post
975    o SEAICE_CGRID adjoint done
976    o R_STAR adjoint implemented.
977      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
978      * need to sort out init. of h0facc, etc.
979    o Make pkg/profile fully independent of ecco,cost, etc. stuff
980      to be able to use it in pure forward.
981    
982    checkpoint58d_post
983    o upgrade simple test-experiment to tutorial example:
984     step.1: duplicate the experiment and (step.2) will remove the old copy.
985      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
986      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
987      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
988      tutorial_global_oce_biogeo    <- copy of dic_example
989      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
990      tutorial_plume_on_slope       <- copy of plume_on_slope
991      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
992      tutorial_global_oce_optim     <- empty for now (David ?)
993      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
994     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
995    o correct a sign problem in cost_scat.F
996    o obcs and ptracers: fix boundary conditions for advections schemes
997      with larger stencil
998    o thsice adjoint: start
999    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1000      completeness
1001    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1002      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1003    o ptracers adjoint:
1004      * avoid extensive recomputatations
1005      * fix missing re-init. of gptr (missed by TAF)
1006    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1007      me to turn off the excessive output to STDOUT that this package produces
1008    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1009      and add those terms in Vector-Invariant formulation.
1010    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1011      if the control period (xx_hfluxperiod etc) is 0
1012    o in profiles pkg, clean routines and fix details
1013    o in ecco pkg, reading ssh data:
1014      fix problem in case the model does not start at iter0=0
1015    o fix mnc-pickup/restart for ptracers
1016    o new package prifiles:
1017      code to compute profile-based cost by Gael Forget
1018      (modifs in ecco, ctrl, autodiff)
1019    o Benign bug fix in initialization (spotted by M. Mazloff) of
1020      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1021    
1022    checkpoint58c_post
1023    o adjoint: finish NLFS adjoint and provide reference output in
1024      verification/global_ocean.90x40x15/results_ad_nlfs
1025    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1026      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1027      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1028      with SEAICE_CGRID defined.
1029    o move calendarDumps from "data" to "data.cal" and clean-up the code
1030      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1031    o add useEXF & useCAL flags (for now, set in hard-coded way)
1032    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1033      (were missing in NH mode, and wrong in quasihydrostatic mode).
1034      waiting for Chris updated version of calc_gw to add those CALLs.
1035    o fix bug in quasihydrostatic S/R ;
1036      add a test for this option: global_ocean.90x40x15.qshyd
1037    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1038      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1039    o add on/off flag useOffLine for package OFFLINE
1040    o seaice:
1041      - modify advection so that it works also on the C-grid
1042      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1043        problem in multi-tile runs with C-grid
1044      - add flags for clipping ice velocities and/or masking solver forcing
1045      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1046        C-grid solver
1047      - added a few comments to seaice_diffusion.F
1048      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1049        are now exclusive)
1050      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1051        required re-ordering the code a little:
1052       + make DAIRN global variable (defined in SEAICE)
1053       + move computation of the viscosities eta and zeta into a new separate
1054         routine (because I need to recompute them in seaice_ocean_stress.F)
1055    
1056    checkpoint58b_post
1057    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1058      update output.txt of exp. aim.5l_cs.thSI
1059    o various mnc cleanups and improvements:
1060      + shrink lookup tables by factor of ~4
1061      + better error reporting when running out of lookup space
1062      + able to handle longer path/file names (up to 500 chars)
1063    o adjoint:
1064      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1065      - TBD: "hidden" mom_vecinv recomp. in dynamics
1066    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1067     (allow to differentiate between forcing components using new integer flags:
1068      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1069     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1070    o ecco
1071      - enable trend removal from SSH anomaly obs.
1072    o adjoint
1073      - a fix for PmEpR when #undef EXACT_CONSERV
1074      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1075      - try to fix "hidden" recomp. in forward_step for NLFS
1076        (NLFS seems broken sometimes after I checked it in)
1077    o seaice:
1078     - add c-grid version of the dynamic solver:
1079       + three new routines that are the c-grid substitute lsr, dynsolver
1080         and ostres
1081       + put a few fields that were local to dynsolver into global common
1082         blocks, so that I can move the computation of stresses etc into
1083         seaice_lsr (saves coding but may break the adjoint).
1084     - replace more hardwired parameters by runtime parameters
1085     - add ice masks that mask the rhs of the implicit solvers where there
1086       is no ice (commented out in seaice_dynsolver, because i am not sure
1087       if this works properly), eventually this should replace the clipping
1088       of ice velocities in seaice_dynsolver to +/-40cm/s.
1089    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1090      include it only where its needed
1091    o move balancing of fluxes before the call of external_forcing_surf
1092    o seaice:
1093      - correct units of turning angles (now they are really in degrees)
1094      - move computation of GWATX/Y out of main routine into dynsolver
1095      - initialize GWATX/Y in seaice_init
1096    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1097      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1098    o seaice: add runtime flags for turning angles (default to zero)
1099    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1100      and trend from exf forcing and ctrl control adjustments
1101    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1102      (since checkpoint57x_post)
1103    o change the default rotation period to 86164.s = the Earth rotation
1104    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1105      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1106    o seaice advection: add code for choosing between the default (2nd order
1107      central differences) and multiDim advection schemes provided by
1108      pkg/generic_advdiff
1109    o seaice:
1110      - removed all references to SEAICE_GRID.h fields from
1111        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1112        (cubed-sphere configuration will change a little)
1113      - grid computations in seaice_init are obsolete now.
1114      - cleaned up code a little so that is easier to read (hopefully).
1115      - added new (better?) discretizations of default advection and diffusion
1116        (turn on with SEAICEuseFluxForm)
1117      - replace 1 in 3d global fields by kSurface in growth.F
1118      
1119    checkpoint58a_post
1120    o seaice:
1121      - bug fix in advect.F
1122    o shelfice:
1123      - separate shelfice load anomaly from pload (breaks with time
1124        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1125        Its default is 0., but it may be computed more cleverly from (unknown)
1126        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1127        done offline. A good approximation of the pressure load anomaly is
1128        necessary to avoid large initial adjustment processes underneath
1129        deep-reaching shelfice.
1130      - small fix in ISOMIP shelfice_thermodynamics
1131      - add more sophisticated thermodynamics of Hellmer (1989), this is
1132        now the default
1133      - give a few constants more intuitive names
1134    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1135      if bulk formulae are used in long integration (especially EmPmR). Turn
1136      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1137      if balancePrintMean, the imbalance that is substracted is printed to
1138      STDOUT.
1139    o fix bug (typo) in obcs_apply_eta.F
1140    o add a new package shelfice which enables us to model the circulation
1141      underneath shelf-ice with draughts of hundreds of meters.
1142     - works
1143     - to do: + include improved thermodynamics
1144              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1145                instead of new field kTopC
1146              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1147                instead of new field R_shelfIce and new code in ini_depth.F
1148                and ini_mask_etc.F?
1149              + adjust vertical mixing schemes?
1150    o seaice pkg:
1151     - add a cpp-flag to include a simple formula for a salinity dependent
1152       freezing point of sea water at the surface
1153     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1154       meridional stresses are now different (and hopefully correct)
1155    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1156       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1157       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1158    o pkg/diagnostics: add options and parameters for regional-statistics
1159       diagnostics ; define regions by reading a region-mask from a file
1160       (might add other options later)
1161    o pkg/bulk_force:
1162     - add option and parameters to use AIM surface-flux formulae.
1163     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1164       others forcing fields (defined in PARM05, parameter file "data") are loaded
1165       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1166     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1167     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1168     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1169       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1170     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1171    
1172    checkpoint58
1173    o add "--embed-source" option to genmake2 which, when the supporting
1174      tools can be compiled (as determined by genmake2) will turn on the
1175      embed_files package which then embeds the entire MITgcm source code
1176      (*.[fFhc] + Makefile) used for the build within the executable
1177      - requested by CNH but off by default
1178      - adds a paltry <9MB to the mitgcmuv executable in most cases
1179      - only writes the output when useEMBEDSRC in eedata is true
1180    o clean up 3-dim. relaxation codes:
1181      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1182      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1183      * Thanks to Tom Haine for testing!
1184    
1185    checkpoint57z_post
1186    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1187      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1188    o fix the pickup behavior for obcs in combination with ptracers
1189    o fix a bug in ptracers_external_fields_load
1190    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1191      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1192    o transfered surface NH pressure to eta field (if exactConserv).
1193    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1194         and update lab_sea output.txt file.
1195    o completing 3-dim. relaxation code: additional term
1196         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1197      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1198      * At compile time, in "EXF_OPTIONS.h" set
1199          #define  ALLOW_CLIMTEMP_RELAXATION
1200          #define  ALLOW_CLIMSALT_RELAXATION
1201      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1202          tauThetaClimRelax3Dim = 15552000.0,
1203          tauSaltClimRelax3Dim  = 15552000.0,
1204      * 3 cases:
1205          1) Use a constant-in-time 3-dim. field
1206          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1207          3) Real-time relax. to time-evolving prescribed field
1208    o Adding Laplacian-type smoothness constraint on
1209      initial and boundary (forcing) controls (ic, bc)
1210      * enable at compile-time via
1211        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1212      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1213      * Absolute scale somewhat unclear so far
1214      * no area weighting was included since no other cost term does so far
1215    
1216    checkpoint57y_post
1217    First step for a NLFS adjoint
1218    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1219    o new init. routines for calc_r_star, calc_surf_dr
1220    o still need to deal with ini_masks_etc
1221    o testreport seemed happy
1222    checkpoint57y_pre
1223    
1224    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1225    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1226    o add new offset feature to offline pkg (plus minor cleanup)
1227    o cfc fixes for final year of integration
1228    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1229      be in GCHEM_OPTIONS).
1230    
1231    checkpoint57x_post
1232    o fix testreport Pb in multiple test experiment.
1233    o cleanup our namelist syntax in verification:
1234      - make it more F95 standards compliant (some work still needed)
1235      - allows the vast majority of our tests to work with gfortran
1236    o Non-Hydrostatic:
1237     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1238     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1239    o Allow to apply AB on T,S rather than on AB(gT,gS):
1240     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1241     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1242       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1243     - need a "clever" read_pickup to restart from the other AB formulation
1244    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1245    o remove some unused variables (reduces number of compiler warnings)
1246    o adjoint
1247      * Disable useVariableViscosity for adjoint for time being
1248        (there are a number of extensive recomputations)
1249      * Initialize certain variables needed for adjoint
1250    
1251    checkpoint57w_post
1252    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1253                 fix the singleCpuIO RS version of MDSWRITEFIELD
1254       and add a WARNING if using globalFiles=T with multi-processors.
1255    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1256      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1257    o tracer advection scheme:
1258      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1259       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1260       was not very convenient).
1261      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1262       (further tests needed for the implicit DST & Flux-Limiter schemes).
1263    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1264      and sRef for convenience, handy, when you want to initialize
1265      ptracers in a large domain with a constant non-zero value. Also,
1266      untangle ptracers_init.F a little.
1267    
1268    checkpoint57v_post
1269    o change dome exp. to use variable viscosity in side-drag terms.
1270    o remove all the files from the cfc_offline test since they are now
1271      incorporated into tutorial_cfc_offline which has been producing
1272      identical results for a few days of testing
1273    o add new parameter: sideDragFactor to enable half-slip-side BC
1274      and change side-drag S/R to use viscosity from mom_calc_visc
1275      (can switch back by setting sideDragFactor=0.); affects results at
1276      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1277       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1278    o vorticity & strain are now computed without masking, to account for
1279      no-slip-side BC in variable viscosity calculation ; mask is applied
1280      anyway later on, before computing advection/coriolis terms.
1281    o modify exp4 to test new obcs support for reading from external files
1282      and for passive tracers
1283    o fix behavior of ptracers_monitor when monitor output is written to a
1284      netcdf-file; still not independent of monitor.F (writes in the same
1285      file).
1286    o change default value of tRef (put a uniform, meaningful value for ocean
1287      & atmos) and initialize sRef (was missing, as Martin mentioned).
1288    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1289      to be proportional to enstrophy dissipation length.  Thus,
1290       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1291      This is now consistent with Smagorinsky and with the manual.
1292    
1293    checkpoint57u_post
1294    o OBCS and PTRACERS: add open boundary support for passive tracers
1295      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1296        OB-values from file; this is not different from the way theta and salinity
1297        are treated
1298      - however, Orlanski-radiation conditions are not supported, and the model
1299        will stop if you use pTracers and Orlanski at the same time.
1300      - beefed up the rountine obcs_external_fields_load: now only those open
1301        boundary values are overwritten with values from files for which there
1302        are really files, otherwise the OB-fields remain untouched. This makes
1303        it possible to use different OBs at different ends of the domain (as
1304        with EXF)
1305    o reduce number of exch calls in shap_filt (s2).
1306    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1307      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1308    
1309    checkpoint57t_post
1310    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1311    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1312      same truncation, independent of the face number: affects affects several
1313      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1314    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1315      note that biharmonic viscosity + no-slip was not tested in any experiment.
1316    o fix bug in non-linear free-surf side-drag ; generate new output for
1317      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1318    o make mnc honor the writeBinaryPrec flag for most kinds of output
1319    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1320    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1321      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1322    o add brackets in multi-terms sum to get same truncation, independent of
1323      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1324      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1325    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1326      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1327      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1328      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1329      Suggested values of viscosity parameters found in mom_calc_visc.
1330      Many new viscosity diagnostics available.
1331    
1332    checkpoint57s_post
1333    o Add clearing-house for viscosity calculations, mom_calc_visc and
1334      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1335      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1336      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1337      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1338      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1339      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1340      ViscAhStrain and viscAhTension are now retired.
1341    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1342    o In response to JMC's bug report, genmake2 now ignores any soft-links
1343      that it finds in the *current* directory when searching for files.
1344      Soft-links found in any other source directories will still work as
1345      they did before.
1346    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1347      a C routine to unlimit the stack size
1348    o mnc-ify pkg/aim snapshot vars
1349    o mnc-ify pkg/land as requested by Daniel
1350    o various changes to mnc including:
1351      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1352      - output can now be grouped so that all files within a group
1353          change the ITER portion of their names in lock-step together
1354      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1355          and works with both EXCH1 and EXCH2 (but needs more testing)
1356      - writing works for all verification test cases w/ g77 on Linux
1357    
1358    checkpoint57r_post
1359    o make MNC variable initialization happen earlier
1360    o add diagnostics for (almost) each term of the momentum Eq.
1361    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1362    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1363    o remove MINIMAL_TAVE_OUTPUT option ;
1364      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1365    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1366      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1367    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1368    o add time-dependent SST, SSS control
1369    o cost terms in ecco/ modularized (new cost_generic.F)
1370    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1371    o new infrastructure for seaice model vs. obs misfits in seaice/
1372      * driver from the_main_loop.F is seaice_cost_driver.F
1373      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1374      * gradient check in Exp. 6a of natl_box_adjoint/
1375    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1376      (see README file)
1377    
1378    checkpoint57q_post
1379    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1380    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1381      - bug was reported by Jean-Michel and Ian Fenty
1382    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1383      update exp. cpl_aim+ocn output.
1384    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1385      Needed for high-res. runs with large global files
1386      to be able to limit tapelev size
1387    o Changed some tests for adjoint:
1388      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1389      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1390      * global_ocean.90x40x15/ back to default 3-level checkpointing
1391    o Modifications to enable scripted COMMON to MODULE conversion
1392      * verification/OpenAD/code/ has necessary scripts and description;
1393      * converts, compiles and runs successfully;
1394    
1395    checkpoint57p_post
1396    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1397    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1398      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1399    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1400    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1401      (was already the case for dissipation with mom_vecinv,
1402       and also the case for grad.PhiHyd when staggered-timeStep)
1403      This will allow to put dissipation out-off the AB time-stepping.
1404     Unfortunately, affects truncation error. Update output of exp. that "fails"
1405      (cg2d matching number) and leave the others for later: front_relax(10),
1406      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1407      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1408    
1409    checkpoint57o_post
1410    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1411      (2) its ready to be documented during the 20050801 DocFest
1412    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1413      for ideal_2D_oce and lab_sea on linux_ia32_g77
1414    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1415      in global1x1_tot/code_seaice_adj to access indices 32, 33
1416      (worth another tag)
1417    
1418    checkpoint57n_post
1419    o adding precip control xx_precip 32
1420    o adding swflux control xx_swflux 33
1421    o Replacing 10 forcing penalty cost routines by 1 generic.
1422    o Implementing partitioning in time-mean and variable adjustment
1423      for atmos. state.
1424    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1425  o in natl_box_adjoint:  o in natl_box_adjoint:
1426    * updated: results_bulk/    * updated exp 1 to 10
1427    * not yet updated: results/, results_seaice/      (but does not have time-mean vs. variable split results yet)
1428    o updated global1x1/*_seaice_adj/
1429      to incorporate latest changes
1430    o enable useSingleCpuIO for mdsio vector routines
1431      (applies in particular to tapelev I/O)
1432    o removed inefficient K-loop in all active_file*control*.F
1433    
1434  checkpoint57m_post  checkpoint57m_post
1435  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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